WO2018135583A4 - Spiral-shaped movement mechanism, and horizontal rotary furnace equipped with spiral-shaped movement mechanism - Google Patents

Abstract

Provided is a spiral-shaped movement mechanism which is easy to create, and which has a structure in which only particles circulate between two reaction chambers and gases are less likely to mix together or a structure through which a gas passes while coming into contact with solid particles at a high density. The mechanism is provided with a first surface plate formed in a disc-like shape, a second surface plate formed in a disc-like shape, a first inlet and a first outlet provided to the first surface plate, a second inlet and a second outlet provided to the second surface plate, a first pathway having a clockwise spiral shape connecting from the first inlet to the second outlet, and a second pathway having a counterclockwise spiral shape connecting from the second inlet to the first outlet.

Description

Horizontal rotary furnace provided with a spiral movement mechanism and a spiral movement mechanism

The present invention relates to a spiral moving mechanism and a horizontal rotary furnace including the spiral moving mechanism.

In recent years, with concern over the exhaustion of fossil fuels, attention has been focused on woody biomass as an alternative fuel and steam turbine power generation by combustion as an energy conversion technology. Although woody biomass can be sustained and regenerated, it is a non-uniform solid, so its handling is poor, and combustion requires the treatment of harmful oxides such as dioxins contained in exhaust gas, and recovery steam Low power generation efficiency is a problem. Therefore, the inventors focused attention on biomass pyrolysis and gasification, and invented a new-type apparatus equipped with a spiral movement mechanism as its apparatus structure. Thereby, it is possible to obtain a gas fuel which is excellent in handling property and high in calorific value.

The pyrolysis gasification reaction (endothermic reaction) of the organic matter requires heat, but can be roughly classified into direct gasification and indirect gasification depending on the method of supplying the heat. Direct gasification blows air or oxygen into the reactor, burns a portion of the thermal decomposition product, and the heat causes the gasification reaction (endothermic reaction) to occur. For this reason, it is advantageous to obtain the gas fuel with one device, but since the combustion gas and nitrogen in the air are mixed in the product gas, there is a problem that the calorific value of the obtained gas is low.

On the other hand, indirect gasification requires a separate device for supplying the amount of heat required for gasification, but since the air and oxygen are not used in the device, the calorific value of the obtained gas is high without the product gas being diluted. A two-column circulating fluidized bed gasifier is an example. This is a method of using two fluidized beds as a reactor, dividing it into a gasification tower and a combustion tower, and sending high temperature fluid medium particles of the combustion tower to the gasification tower to perform gasification with the heat generated in the combustion tower. is there. Since only the fluidized medium particles circulate between the two towers to supply heat to the reactor, partial combustion is unnecessary and high calorific value gas can be obtained.

In addition, there has been proposed a fluidized bed having a single-column, double-column circulating function, in which partition media are provided in a single column and fluidizing medium particles circulate in the gasification unit and the combustion unit. In Japan, since woody biomass is dispersed in the area, a small-scale distributed process is preferable from the viewpoint of intensive cost. However, the process using a fluidized bed is not suitable for woody biomass because it is large even if it is a single tower system and it is difficult to reduce the scale.

As a gasification process that simultaneously solves the problems of direct gasification and indirect gasification, there is a horizontal rotary cylindrical furnace with an inclined partition plate and a small spiral cylinder inside. This horizontal rotary cylindrical furnace has two functions, by enabling circulation of particles in the horizontal rotary cylindrical furnace by installing helical small cylinders whose winding directions are opposite to each other in the inside. One of them is the separation into the pyrolysis zone and the combustion zone by forming a gas seal by the particle layer packed in the spiral small cylinder, and supplying the combustion heat to the pyrolysis zone by the circulation movement of solid particles. (See Patent Document 1 and the like). The other is that it is used as a gas-solid contactor for promoting contact reaction between gas and solid by passing gas through the particle layer packed in a spiral cylinder (see Patent Document 2 etc.) .

By adjusting the environmental conditions surrounding solid particles, it becomes possible to cause, promote or control chemical reactions or physical phenomena involving solid particles. Chemical reactions include combustion of solid particles, thermal decomposition, etc., and there are also so-called catalytic reactions in which solid particles are catalyzed. Physical phenomena include drying, crushing, classification, granulation, adsorption or desorption of gas, etc. of solid particles, and factors such as temperature and pressure are used for generation, promotion or control of these, and solid gas Although material and heat transfer occurs between them, the degree of contact efficiency between the solid particle surface and the gas is the main factor that determines its performance.

As devices in which solid particles and gas come in contact, (a) fixed layer, (b) vertical transfer layer shown in FIGS. 12 (a) and 12 (b), and FIG. 12 (c), (d) and (e) (C) conveyor horizontal moving layer, (d) inclined moving layer, (e) screw moving layer, or (f) fluidized bed, (g) spouted bed shown in (f) and (g) of FIG. It has been developed and put into practical use.

However, the range of use of these device structures is limited by the limitations of each. For example, in (a) and (b), since the solid moves downward under its own weight, uniform gas flow can not be achieved unless the type, shape, and size of the solid are uniform. In (c), the relative positional relationship of the solid particles is fixed, so the contact efficiency is low, and (d) is a pusher, (e) is a screw rotation, and (f) is a solid that is suspended by the force of air flow. There are problems such as the need for a large power to make it possible, and the limited particle size that can be applied in (g).

JP, 2013-209527, A Patent No. 4547244

The present invention relates to a horizontal rotary furnace including a spiral moving mechanism and a spiral moving mechanism, and the effects can be roughly divided into (1) heat transfer by solid circulation and (2) gas-solid contact reaction. .

(Part 1: Heat transfer by solid circulation)
In the conventional horizontal rotary cylindrical furnace including the patent document 1, when manufacturing a small cylinder having a helical structure inside, it is difficult to weld the helical structure into the small cylinder, and the joint is peeled off and peeled off. There is a possibility that gas may mix through the part.

Therefore, the present invention provides a spiral moving mechanism as a structure in which only particles are circulated between two reaction chambers so that gas is not easily mixed, and a horizontal rotary cylindrical furnace internally having the spiral moving mechanism. The first goal is to

Furthermore, the present invention is a new device having a principle and structure which is different from any of the conventional gas-solid contact devices, thereby making it necessary to uniformly meet the problems of the conventional device, such as the type, shape and size of raw material solids. It is intended to solve the problems of temperature distribution in the solid particle layer, requiring a large operating power, and the like.

The inventors pay attention to a horizontal rotating body, and a large number of solid particles are densely packed therein, and the relative positional relationship of the solid particles is constantly fluctuated by the rotation of the device main body (hereinafter referred to as A gas transfer system (hereinafter referred to as a rotary gas-solid contact structure) having one or more filled solid rolling spaces and through which the entire amount of gas passes in contact with the entire surface of the solid particles. I got the idea of a solid contact device. Here, the position of the filled solid rolling space may be parallel, perpendicular or oblique to the rotation axis of the horizontal rotating body, the number is one or more or plural, and the shape is a cylinder, It differs depending on the type of rotary gas-solid contact structure such as semi-cylindrical shape. The helical cylinder is one of its forms, and has already been filed and patented by the inventors (see Patent Document 2).

(Part 2: Gas-solid contact reaction)
In the horizontal rotary cylindrical furnace shown in Patent Document 2, if the length of the spiral in the small cylinder having the spiral structure inside is not sufficiently taken, gas may pass through and the gas-solid contact efficiency may be lowered.

Therefore, it is a second object of the present invention to provide a spiral moving mechanism which is easy to prepare and has high gas-solid contact efficiency, and a horizontal rotary cylindrical furnace internally having the spiral moving mechanism.

In order to achieve the first object and the second object, the spiral moving mechanism of the present invention comprises a first face plate formed in a disc shape and a second face plate formed in a disc shape A first inlet and a first outlet provided to the first face plate, a second inlet and a second outlet provided to the second face plate, and the second inlet and the second face provided from the first inlet. A clockwise spiral first path leading to an outlet, and a counterclockwise spiral second path leading from the second inlet to the first outlet.

In the horizontal rotary cylindrical furnace according to the present invention, the spiral moving mechanism described above, a first chamber connected to the first face plate of the spiral moving mechanism, and the second moving mechanism of the spiral moving mechanism. And a second room connected to the face plate.

Thus, in the spiral movement mechanism of the present invention, the first face plate formed in a disc shape, the second face plate formed in a disc shape, and the first inlet provided in the first face plate And a first outlet, a second inlet and a second outlet provided in the second face plate, a clockwise spiral first path connecting the first inlet to the second outlet, and a second And a left-handed spiral second path connecting from the inlet to the first outlet. Further, the gas in the first chamber and the gas in the second chamber are respectively drawn out and drawn out of the chamber by separate gas pumps. Since it is such a structure, preparation is easy, and only particle | grains circulate between two reaction chambers, and it becomes a structure which gas does not mix easily.

Further, according to the spiral movement mechanism of the present invention, a first face plate formed in a disc shape, a second face plate formed in a disc shape, and a first inlet and a first face provided in the first face plate. A first outlet, a second inlet and a second outlet provided to the second face plate, a clockwise spiral first path connecting the first inlet to the second outlet, and a second inlet And a left-handed spiral second path leading to the first outlet. Also, the gas of the second chamber is sucked by the gas pump, so that the gas of the first chamber also flows into the second chamber via the swirl. With such a configuration, it is easy to make, and particles circulate between two reaction chambers, and the gas in the first chamber moves to the second chamber while in close contact with the solid particles. It has become.

Furthermore, in the device of the present invention, since solid particles roll inside the horizontal rotating body, (a) a fixed layer, (b) a solid different in type or different in shape and size which was not possible in a moving layer It can accept particles. Also, in the rotating solid vent structure, the solid particles are moved upward by the friction force with the inner wall of the device by rotation of the device main body and then fall naturally by gravity, and in this rolling state, all surfaces of the solid particles Contact. Since the gas-solid contact in this mechanism is supported by the power to rotate the horizontal rotating body, the solid particles are suspended in the air flow against the gravity and the gas-solid contact is reduced by an order of magnitude compared to the fluidized bed that is in gas-solid contact. Solid contact can be achieved. The problem of the conventional device is solved

It is a perspective view explaining the concept of solid circulation of a horizontal rotation furnace which has a spiral movement mechanism. It is a conceptual diagram explaining spiral movement mechanism AD. It is a photograph of resin pellet and wood flour pellet. It is a graph which shows the relationship of the moving speed and the average amount of remaining particles when there is a window and there is no window. It is a graph which shows the relationship between the moving speed of each spiral movement mechanism, and the average amount of remaining particles. It is a graph which shows the relationship between the amount of particle loading in each spiral movement mechanism, and the amount of remaining particles. It is a side view of each spiral movement mechanism. It is a graph which shows the relationship between the moving speed for every input amount, and the average amount of remaining particles. It is a graph which shows the relationship between the particle | grain loading amount for every input amount, and the amount of residual particles. 7 is a horizontal rotary furnace of Example 2; FIG. 7 is an exploded perspective view of a spiral movement mechanism of Example 2; It is an explanatory view explaining contact of gas and solid. It is explanatory drawing of a spiral-shaped rotary gas-solid contact structure. It is explanatory drawing of the rotation gas-solid contact structure which equipped the rotation axis in the surface perpendicular | vertical to the rotation axis in the horizontal rotation cylinder combining the spiral tube which winding directions reverse | oppose. It is explanatory drawing of the drying apparatus as a horizontal rotary furnace provided with forward-reverse pair of spiral spirals. It is a top view of a spiral movement mechanism provided with a return member. It is an exploded view explaining composition of an intake channel. It is explanatory drawing of the apparatus which performs steam reforming which mounts two spiral movement mechanisms.

The first embodiment of the present invention will be described below with reference to the drawings. An experiment conducted on the spiral movement mechanism in the first embodiment will be described. Next, an embodiment in which the spiral moving mechanism is applied to the horizontal rotary furnace in the second embodiment will be described.

First, a conceptual view of a horizontal rotary furnace according to the present invention is shown in FIG. By rotating this device, the particles in the reaction chamber flow into the moving mechanism from the hole formed in the outer peripheral portion of the spiral channel of the moving mechanism present in the central portion of FIG. 1 and the opposite side from the central portion of rotation Flow into the reaction chamber of In addition, since the particles are filled in the spiral movement mechanism, a gas seal is formed.

As a result, only particles move and gas can not be easily mixed. By using this as a biomass gasification furnace, similar to the two-column circulating fluidized bed biomass gasification furnace, a small-scale apparatus capable of generating high calorific value gas without external heat supply can be created more simply. It is possible. This gasifier is considered to be applicable not only to pure woody biomass, but also to gasification of organic resources such as organic waste and coal in which biomass and plastic etc are mixed.

In the present embodiment, in developing a new horizontal rotary cylindrical furnace having a spiral movement mechanism inside, a study using a cold model is conducted. There are two important points in this device: the particle packing rate in the spiral moving mechanism necessary for gas sealing and the moving speed of particles for heat supply from the combustion chamber. These particle behavior measurements, which are difficult for actual machines, were performed using a transparent plastic cold model, and how they would change depending on the device structure and operating conditions was examined.

1. Experimental apparatus and method The cold model is a transparent vinyl chloride cylinder having an inner diameter of 200 (mm) and a total length of 645 (mm), and a spiral moving mechanism A having an outer diameter of 200 (mm) and a width of 45 (mm) , B, C or D separate the left and right two rooms. In this embodiment, this room is called a particle storage unit. A semi-cylindrical gutter mechanism was installed at the entrance to the outer periphery of the moving mechanism in anticipation of the improvement of the efficiency of particle loading into the spiral moving mechanism. In addition, in order to measure the moving speed, in the present embodiment, the inlet and the outlet of the flow passage on one side of the spiral moving mechanism are closed, and the particles move from the right particle reservoir to only the left particle reservoir and mutually move I did not. The spiral movement mechanism used is shown in FIG.

Plastic pellet (bulk density 541 (kg / m3), true density 920 (kg / m3), diameter about 5 (mm), height about 2 (mm) cylindrical) or wood as sample particles on the right side of the above cold model 2000 g of powder pellets (bulk density 665 (kg / m3), true density 1297 (kg / m3), diameter of about 5 (mm), height of about 15 to 25 (mm) cylindrical shape) is introduced Horizontal rotation was performed at 10 (rpm) using two rotating gantry (AV-1 manufactured by Asahi Rika Seisakusho Co., Ltd.). The device was stopped every 5 revolutions, and the particles moved to the left were collected and weighed. At the same time, the spiral movement mechanism was removed, the weight of the particles filled in the inside was measured, and the spiral movement mechanism was observed from the side to confirm the presence or absence of gas seal formation. The photograph of the used sample particle is shown in FIG.

2. Experimental Results and Discussion 2.1 Inlet Shape and Outlet Shape of Spiral Transfer Mechanism Per 5 revolutions at a plastic pellet input of 800 (g) with and without a bay window at the particle inlet of spiral transfer mechanism A The relationship between the moving speed and the average residual particle amount of the particle storage portion is shown in FIG. It can be seen from FIG. 4 that the moving speed of the particles is higher when the spiral moving mechanism in which the window is installed is used as compared with the state where the window is not installed in the particle inlet. It is considered that this is because particles efficiently flow into the moving mechanism by the window. In the following, all studies were conducted using a spiral movement mechanism with a window.

The relationship between the particle movement speed per 5 revolutions and the average amount of remaining particles in the particle storage section when changing the spiral movement mechanism is shown in FIG. The relationship is shown in FIG. Moreover, the spiral movement mechanism side view after 30 rotations is shown in FIG.

From FIG. 5, it can be understood that the moving speed becomes a constant value in about 10 rotations (the second plot from the right) regardless of which spiral moving mechanism is used. From this, it was found that the movement speed was almost steady at 10 rotations in this experimental device.

In addition, the particle movement speed is highest when using a moving mechanism A in which the ratio of particle inlet to outlet is 1 to 1 and the number of turns is 1 and the ratio of particle inlet to outlet is 2 to 1 and the number of turns is 1 It can be seen that the particle moving speed at the time of using the moving mechanism D having 5 volumes is the smallest. A moving mechanism C in which the ratio of particle inlet to outlet is 2: 1 and the number of turns is one, and a moving mechanism B in which the ratio of particle inlet to outlet is 1 to 1 and the number of turns is 1.5 It becomes clear that Here, from FIG. 2, the size of the outlet is 31.0 (mm) the largest at the moving mechanism A, followed by 22.8 (mm) for both the moving mechanisms B and C, the moving mechanism D 17.8 (mm) It is understood that it is the smallest as mm). Comparing the size of the outlet with the results of FIG. 4, it can be seen that the larger the outlet, the higher the moving speed. The diameters of the moving mechanisms are all constant, and when the inlet diameter is increased, the outlet diameter decreases accordingly, so the inflow amount increases but the outlet becomes clogged and can not flow out, resulting in a decrease in the movement amount. In addition, when the number of turns is increased, both the inlet diameter and the outlet diameter decrease, so the movement amount is considered to decrease. Therefore, it is considered that the moving mechanism A having the largest outlet diameter was able to move particles the fastest. From this, it was found that the amount of particle movement depends on the size of the outlet.

According to FIG. 6, compared with moving mechanisms C and D in which the ratio of particle inlet to outlet is 2 to 1, the loading amount in the moving mechanism in moving mechanisms A and B in which the ratio of particle inlet to outlet is 1 to 1 Is small. Also, it can be seen that the filling amount in moving mechanisms C and D is almost equal, but the filling amount in A is larger than that in moving mechanism B. Here, from FIG. 2, the entrance diameter of the moving mechanism is the largest at 47.5 (mm) for the moving mechanism C, and then 37.6 (mm) for the moving mechanism D, and 31 (mm) for the moving mechanism A, 22.8 (mm) of mechanism B follows. From these, it can be seen that, when the inlet diameter and the outlet diameter are equal, the larger the inlet diameter, the larger the filling amount in the moving mechanism, but when the inlet diameter is larger than the outlet diameter, the moving mechanism filling amount becomes almost constant. . It is considered that this is because more particles flow into the moving mechanism as the inlet diameter of the spiral moving mechanism is larger. In addition, when the inlet diameter is larger than the outlet diameter, the outlet becomes a bottleneck and congestion of particles occurs in the moving mechanism, so that the filling amount becomes large. However, even if many particles flow into the moving mechanism, the outlet is small, so that all particles can not flow out and some particles flow backward as the rotation occurs. It is considered that no major change is seen.

From FIG. 7, while the gas seal formation can be confirmed in the moving mechanisms C and D in which the filling amount is large, it can not be confirmed in the moving mechanisms A and B.

2.2 Input amount and particle shape The particle movement amount per 5 revolutions and the average residual particle amount of the particle storage part at the time of performing 30 rotation operation by changing the injection amount of the plastic pellet using the spiral movement mechanism A FIG. 8 shows the particle loading amount in the moving mechanism and the residual particle amount of the particle storage portion at that time. The operation was performed up to 120 revolutions only when the particle loading amount was 2000 (g). Moreover, the result at the time of performing 120 rotation driving using wood-powder pellet 2000 (g) as input particle | grains was written together to FIG. From FIGS. 8 and 9, it can be seen that the particle moving speed and the particle loading amount in the moving mechanism are in good agreement with the results of 2000 (g) at any particle input amount at values after 10 revolutions considered to be steady state. Also, according to FIG. 8, the particle movement speed is about 100 (g / 5 rotations) when the amount of residual particles in the particle storage portion is from 1500 (g) to 800 (g) It can be seen that the moving speed decreases. From this, it was found that the amount of particles in the particle storage portion can be stably operated to about 500 (g) under the conditions of this experiment.

Further, from FIGS. 8 and 9, it can be seen that the particle moving speed and the particle loading in the moving mechanism become very small when using wood pellets under the same conditions. It is considered that this is because the size of the wood pellet (about 26 (mm) in length) is large relative to the inlet diameter of the rotating body and it is difficult for the pellet to flow into the spiral rotating body. From this, it was found that it is necessary to design an apparatus suitable for the shape of the raw material particles used.

3. Conclusion Using the cold model of a new horizontal rotary cylindrical furnace with a spiral movement mechanism inside, the results of examining the movement mechanism, the amount of particles, and the influence of the shape on the particle movement speed and the particle loading in the mechanism are as follows found.
1) The moving speed is greatly increased by attaching a window to the entrance of the spiral moving mechanism.
2) The moving speed of the particles depends on the outlet diameter of the spiral moving mechanism, and the particle loading amount in the moving mechanism depends on the size of the inlet diameter and the inlet / outlet diameter ratio.
3) It is necessary to make the inlet diameter of the spiral movement mechanism larger than the outlet diameter.
4) It is necessary to design a spiral movement mechanism that is suitable for the shape of the raw material particles.

Next, the horizontal rotary furnace 1 having the spiral movement mechanism 2 will be described with reference to FIGS. 10 and 11. As shown in FIG. 10, the horizontal rotary furnace 1 has a spiral moving mechanism 2 near the center, a first chamber 51 rightward in the figure, and a second leftward in the figure inside the cylinder made of metal or the like. The room 52 is provided. That is, the horizontal rotation furnace 1 is continuously provided with the 2nd room 52, the spiral movement mechanism 2, and the 1st room 51 in this order.

The horizontal rotary furnace 1 passes through the centers of a first face plate 31 (discussed below) and a second face plate 32 (discussed below), and is adapted to rotate about a substantially horizontal rotation axis. The axis of rotation is inclined horizontally or 3-5 degrees. That is, “horizontal” of “horizontal rotary furnace” in the present invention includes, of course, the case of being strictly horizontal, but is not limited thereto, and is defined as a concept including a slight amount of inclined state. Ru.

The spiral movement mechanism 2 is, as shown in FIG. 11, a first face plate 31 formed in a disc shape, and a second face plate 32 parallel to the first face plate 31 and formed in a disc shape. , The first inlet 31a and the first outlet 31b provided in the first face plate 31, the second inlet 32a and the second outlet 32b provided in the second face plate 32, and the first inlet 31a to the first A clockwise spiral first path 41 connected to the second outlet 32b, and a counterclockwise spiral second path 42 connected from the second inlet 32a to the first outlet 31b. With such a configuration, the spiral moving mechanism 2 has a gas sealing function of conveying solids (mainly a heat transfer medium) through the first path 41 and the second path 42 but impervious to gas.

More specifically, when viewed from the front of the first face plate 31 having the first inlet 31a, the first path 41 enters from the first inlet 31a, and after swirling clockwise, It is a path | route which comes out of the exit 32b of 2. Similarly, when viewed from the front of the second face plate 32 having the second inlet 32a, the second path 42 enters from the second inlet 32a, and after swirling counterclockwise, the first outlet 31b. It is a route out of

The first inlet 31a and the second inlet 32a are disposed on the outer side of the first face plate 31 and the second face plate 32, respectively, and the first outlet 31b and the second outlet 32b are each provided with a first Are disposed on the inner side of the face plate 31 and the second face plate 32. Also, the outer partition of the first path 41 is the inner partition of the second path 42, and the outer partition of the second path 42 is the inner partition of the first path 41. It is done. That is, the first path 41 and the second path 42 are formed in contact with each other to form a double spiral structure.

Each of the paths 41 and 42 has a function of transporting the solid from the inlet to the outlet and blocking (sealing) the gas by rotating the horizontal rotary furnace 1. That is, by filling the particles so as to close the cross sections of the paths 41 and 42, the passage of gas is blocked. Here, since the particle loading amount into the spiral moving mechanism 2 depends on the size of the diameter of the inlet and the inlet / outlet diameter ratio, the cross section may be closed at any position in the paths 41 and 42. It is necessary to adjust the size of the inlet diameter and the inlet / outlet diameter ratio.

As described in the experiment of the first embodiment, the moving speed can be significantly increased by attaching a window to the inlets 31a and 32a. The moving speed of the particles depends on the diameter of the outlets 31 b and 32 b of the spiral moving mechanism 2, and the particle loading amount in the moving mechanism depends on the size of the diameters of the inlets 31 a and 32 a and the inlet / outlet diameter ratio. Furthermore, the diameter of the inlets 31a and 32a of the spiral moving mechanism 2 needs to be larger than the diameter of the outlets 31b and 32b.

The first chamber 51 is, for example, a combustion chamber, and unreacted fuel (char) generated in the gasification furnace is carried to the second chamber 52 together with a circulating medium (eg, sand), and the fuel (char) is carried by air. It burns and supplies heat to the circulating medium (solid, eg sand). The exhaust gas is taken out of the first chamber 51. The circulating medium having heat travels from the first room 51 to the second room 52 through the first path 41. At this time, the gas is sealed.

The second chamber 52 is, for example, a gasification chamber, and an organic substance is introduced and is mainly converted to carbon monoxide and hydrogen by thermal decomposition and reaction with water vapor. These gases are taken out of the second chamber 52. The heat required for the pyrolysis is transferred from the first chamber 51 to the second chamber 52 via the circulating medium (eg sand). The circulating medium and the unreacted fuel (char) move from the second chamber 52 to the first chamber 51 through the second path 42. At this time, the gas is sealed.

(effect)
Next, the effects of the spiral movement mechanism 2 and the horizontal rotary furnace 1 of the present embodiment will be listed and described.
(1) As described above, the spiral moving mechanism 2 includes the first face plate 31 formed in a disc shape, the second face plate 32 formed in a disc shape, and the first face plate 31. The first inlet 31 a and the first outlet 31 b provided, the second inlet 32 a and the second outlet 32 b provided on the second face plate 32, and the right connected from the first inlet 31 a to the second outlet 32 b A spiral first path 41 is provided, and a left-handed spiral second path 42 connected from the second inlet 32a to the first outlet 31b. Since it is such a structure, preparation is easy, and only particle | grains circulate between two reaction chambers, and it becomes a structure which gas does not mix easily. This prevents the gases in both rooms from being mixed and makes it difficult to dilute the useful gas if only one is present.

(2) In addition, since the spiral movement mechanism 2 passes through the centers of the first face plate 31 and the second face plate 32 and rotates about a substantially horizontal rotation axis, the particles ( Solid particles can be transported (circulated) in a phase direction.

(3) Further, the first inlet 31a and the second inlet 32a are disposed on the outer side of the first face plate 31 and the second face plate 32, respectively, and the first outlet 31b and the second outlet 32b Are disposed inward of the first face plate 31 and the second face plate 32, respectively, so that particles can be efficiently transported (circulated) in both directions.

(4) Also, the outer partition of the first path 41 is the inner partition of the second path 42, and the outer partition of the second path 42 is the inner partition of the first path 41. By being made to be certain, the cross-sectional area of the spiral moving mechanism 2 can be reduced, and the entire apparatus (for example, the horizontal rotary furnace 1) can be miniaturized.

(5) Furthermore, the horizontal rotary furnace 1 according to the present invention includes the spiral moving mechanism 2 as described above, and the first chamber 51 connected to the first face plate 31 of the spiral moving mechanism 2; And a second chamber 52 connected to the second face plate 32 of the moving mechanism 2. By this configuration, the production is easy, and only the particles circulate between the two reaction chambers 51 and 52, so that the horizontal rotary furnace 1 in which the gas is hardly mixed is obtained.

(6) Further, it is preferable to further include a third chamber connected to the second face plate of another spiral movement mechanism 2 while further including another spiral movement mechanism 2. By configuring in this manner, it is possible to cause another reaction.

The other configurations and operational effects are substantially the same as those of the first embodiment described above, and therefore the description thereof is omitted.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. 13 to FIG.

FIG. 13 shows a rotary gas-solid contact structure in which a hollow channel is spirally wound around a horizontal rotation shaft and mounted on a vertical surface of the rotation shaft of the horizontal rotation cylinder. In this rotary gas-solid contact structure, solid particles are directed from the inlet side to the outlet side by the rotation of the apparatus, and at this time, the entire amount of the gas entering from the inlet side passes through the packed solid rolling space and solid particles in the space In contact with the entire surface of the

FIG. 14 shows a rotary gas-solid contact structure in which a spiral tube mounted in a horizontal rotary cylinder is mounted on a vertical plane in a horizontal rotary cylinder by combining spiral tubes having opposite directions of winding. Move from the left side to the outlet side (right side) (black arrow), while in the spiral tube (B), the solid particles move from the outlet side (right side) to the inlet side (left side) (hatched arrow) The whole amount of the gas (white arrows) entering from the left side flows into the two spiral tubes, passes through each packed solid rolling space, contacts the whole surface of the solid particles in the space, and is discharged out of the apparatus .

FIG. 15 shows a drying apparatus 1 using superheated steam of water-containing solid particles in a rotary gas-solid contact structure composed of a pair of forward and reverse spirals. At the front and back of the drying device 1, partition plates with inclined guide plate (known solid circulation mechanism) 12, 14 are equipped. The water-containing solid particles fed into the apparatus by the screw feeder 11 pass through the positive swirling packed solid rolling space 13A by the rotation of the apparatus, and the entire surface of the solid particles in the space is then aligned with the hot superheated steam. Heat is supplied by flow contact to evaporate the water and promote drying.

On the other hand, in the reverse swirling packed solid rolling space 13B, all the solid particle surfaces are brought into countercurrent contact with the high temperature superheated steam to be supplied with heat, and the water evaporates and drying progresses. In the front and rear guide plates 12 and 14, the solid particles come into contact with the solid particles having a maximum temperature of 100 ° C., are supplied with heat, and the drying progresses. The dried solid particles are discharged out of the apparatus from the outlet circular weir 15, while the high-temperature superheated steam fed from the center of the screw feeder 11 is solid in the packed solid rolling space 13A, 13B, the whole of which is forward or reverse. The particles are supplied with heat to be discharged as low temperature superheated steam to the outside of the apparatus. The low temperature superheated steam is separated into surplus portions, and then the temperature is raised by a heat exchange device (not shown) to be recycled as high temperature superheated steam.

FIG. 16 shows another form of spiral movement mechanism 2A. As shown in FIG. 16, the spiral moving mechanism 2A is formed in a disk shape in parallel with a first surface plate (31) formed in a disk shape and the first surface plate (31). Second face plate (32), a first inlet 31a and a first outlet 31b provided in the first face plate (31), and a second inlet 32a and a second face provided in the second face plate (32) And an outlet 32b. Then, the spiral movement mechanism 2A is a clockwise spiral second path 42 connected from the first inlet 31a to the second outlet 32b, and clockwise connected from the second inlet 32a to the first outlet 31b. And a spiral first path 41. Furthermore, in the spiral movement mechanism 2A of the present embodiment, at least one return member 60 is attached in the middle of the first path 41 and the second path 42.

More specifically, when viewed from the front of the first face plate 31 having the first inlet 31a, the second path 42 enters from the first inlet 31a and, after swirling counterclockwise, It is a path | route which comes out of the exit 32b of 2. Similarly, when viewed from the front of the second face plate 32 having the second inlet 32a, the first passage 41 enters from the second inlet 32a, and after swirling clockwise, the first outlet 31b. It is a route out of

The first inlet 31a and the second inlet 32a are disposed on the outer side of the first face plate 31 and the second face plate 32, respectively, and the first outlet 31b and the second outlet 32b are each provided with a first Are disposed on the inner side of the face plate 31 and the second face plate 32. Also, the outer partition of the first path 41 is the inner partition of the second path 42, and the outer partition of the second path 42 is the inner partition of the first path 41. It is done. That is, the first path 41 and the second path 42 are formed in contact with each other to form a double spiral structure.

Each of the paths 41 and 42 has a function of transporting the solid from the inlet toward the outlet and contacting the solid with the gas by rotating the horizontal rotary furnace 1. That is, by filling the particles so as to close the cross section of the paths 41 and 42, the gas and the solid are brought into contact with each other. Here, since the particle loading amount into the spiral moving mechanism 2A depends on the size of the diameter of the inlet and the inlet / outlet diameter ratio, the cross section may be closed at any position in the paths 41 and 42. It is necessary to adjust the size of the inlet diameter and the inlet / outlet diameter ratio.

As shown in FIG. 16, the return member 60 is disposed in the first path 41 and the second path 42, and is installed so as to extend from the inner partition to the outer partition. More specifically, the return member 60 is formed to have substantially the same width as the partition wall, and is installed so as to protrude in the rotational direction from the inner partition wall toward the outer partition wall. Therefore, the solid particles moving inside the first path 41 and the second path 42 are transported from the inlet toward the outlet while preventing the falling off by the action of the return member 60. For this reason, compared with the case where there is no return member 60, the conveyance efficiency (moving speed) of solid particles improves remarkably.

And as shown in FIG. 17, the spiral movement mechanism 2B of another form is the 1st face plate 31, the 2nd face plate 32, the 1st entrance 31a and the 1st exit 31b, and the 2nd entrance 32a and a second outlet 32b. And in this spiral movement mechanism 2B, the intake flow path 50 is installed in each of the first inlet 31a and the second inlet 32a. By providing the intake flow path 50 in this manner, the amount of solid particles taken into the first path 41 and the second path 42 from the first inlet 31 a and the second inlet 32 a is increased.

The other configurations and operational effects are substantially the same as those of the above-described first and second embodiments, and therefore the description thereof is omitted.

In addition, the mechanism can be combined with a plurality of mechanisms in the horizontal rotation cylinder or the mechanisms described in the prior patent. In addition, the rotary cylinder incorporating this mechanism is not limited to the horizontal type, and can be combined with the movement using gravity due to inclination.

FIG. 18 shows a horizontal rotary cylinder 1A including two spiral moving mechanisms (2-2 and 2-1), which are generated by thermal decomposition and thermal decomposition of an organic substance by a solid heat medium heated by a high temperature heating gas. Shows an apparatus for steam reforming the tar vapor.

(Solid movement)
In FIG. 18, the black arrows indicate the movement of the solid in the device. The organic substance M introduced into the apparatus is heated and pyrolyzed by the medium temperature heating medium HM from the gas-solid contact reforming swirl 2-2 in the thermal decomposition zone 3-1 to dry gas and wet gas (water vapor and tar It becomes steam) and solid carbon (char). The medium-temperature heat medium HM that has given heat to the organic matter M becomes the low-temperature heat medium HL.

The solid carbon and the low temperature heating medium HL are moved to the low temperature heating medium heating zone 3-2 by the gas-solid contact reforming swirl 2-2, where they pass from the medium temperature heating medium heating zone 3-3 through the gas blocking spiral 2-1 It is heated by the high temperature heating medium HH fed.

The high temperature heating medium HH that has given heat becomes the medium temperature heating medium HM, passes through the gas blocking swirl 2-1, returns to the medium temperature heating media heating zone 3-3, is heated by the high temperature heating gas HGH, becomes the high temperature heating medium HH, and becomes the gas blocking swirl After reaching 2-1, the low temperature heating medium heating zone 3-2 is reached, and the surplus solid residue W is discharged from the rotating cylinder outlet to the outside of the apparatus.

(Motion of pyrolysis gas)
In FIG. 18, white arrows indicate the movement of the gas in the apparatus. The dry gas and the wet gas generated in the thermal decomposition zone 3-1 pass through the forward and reverse two swirl flow paths of the gas-solid contact reforming swirl 2-2 to the low temperature heating medium heating zone 3-2, and from here the gas pump 4 Is sucked out of the device. Since the swirl path is filled with solid, the wet gas contacts the entire surface area of the solid, and the tar vapor reacts with the steam to become synthesis gas, and the product gas P together with the dry gas generated by the gas shut-off swirl 2-1. become.

(Movement of heating gas)
The high-temperature heating gas HGH delivered to the medium-temperature heating medium heating zone 3-3 supplies heat to the medium-temperature solid which has passed through the gas shut-off swirl 2-1 from the low-temperature heating medium heating zone 3-2 to become a medium-temperature heating gas Discharged into

The embodiments of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and design changes to the extent that they do not deviate from the scope of the present invention are the present invention. include.

For example, although the case where the first chamber 51 is a combustion chamber and the second chamber 52 is a gasification chamber has been described in the second embodiment, the present invention is not limited thereto. It can be done. That is, the spiral movement mechanism 2 of the present invention can be applied as long as the solid circulates between the two chambers and shuts off the mixing of the gas between the two chambers.

The application of the device of the present invention is not limited to the gasification reaction, and can be applied to various operations involving heat transfer such as drying, adsorption and desorption, and the like. The target solid particles are not limited to biomass, and can be applied to all solid particulate substances including synthetic resins, metals and inorganic substances.

The shape of the device of the present invention is not limited to the one shown in the figure, and the shape of the inlet and the outlet and the shape of the flow passage can be modified according to the target particles, operation and conditions. For this purpose, experimental study is required to confirm each subject. In addition, in the case where the heat medium particles are partially or entirely lost in one chamber due to reaction or the like, it is possible to make the shape asymmetric. Furthermore, in the illustrated example, the reciprocating flow passage between the left and right chambers is 1: 1, but it is also possible to make both flow passages or one flow passage plural or to eliminate one flow passage and make one passage. .

Reference Signs List 1 horizontal rotary furnace 2 spiral moving mechanism 31 first face plate 31a first inlet 31b first outlet 32 second face plate 32a second inlet 32b second outlet 41 first path 42 (clockwise) (Left-handed) second path 51 first chamber 52 second chamber 1A horizontal rotary cylinder 2-1 gas shut-off swirl 2-2 gas-solid contact reforming swirl 3-1 thermal decomposition zone 3-2 low temperature heat medium Heating zone 3-3 Medium heating medium heating zone 4 Gas pump P Product gas M Raw material organic substance PyG Pyrolysis gas RfG Reforming gas HGH High temperature heating gas HGL Low temperature heating gas HH High temperature heating medium HM Medium heating medium HL Low temperature heating medium W Solid residue

Claims (9)

A first face plate formed in a disc shape;
A second face plate formed in a disc shape;
A first inlet and a first outlet provided in the first face plate;
A second inlet and a second outlet provided in the second face plate;
A clockwise spiral first path leading from the first inlet to the second outlet;
A counterclockwise spiral second path leading from the second inlet to the first outlet;
, A spiral movement mechanism. The spiral movement mechanism according to claim 1, wherein the spiral movement mechanism is configured to rotate around a substantially horizontal rotation axis passing through the centers of the first face plate and the second face plate. The first inlet and the second inlet are disposed on the outer side of the first face plate and the second face plate, respectively, and the first outlet and the second outlet are respectively provided in the first face and the second face. The spiral movement mechanism according to claim 2, wherein the spiral movement mechanism is disposed inward of the first face plate and the second face plate. The partition outside the first path is the partition inside the second path, and the partition outside the second path is the partition inside the first path The spiral movement mechanism according to claim 2 or claim 3. 5. The at least one return member extending from the inner partition wall toward the outer partition wall is installed in the first path and the second path. The spiral movement mechanism described in the section. 4. The intake channel according to claim 2, wherein the first inlet and the second inlet have an arc-shaped intake channel extending the first path and the second path, respectively. The spiral movement mechanism described in any one of 5 items. A spiral movement mechanism according to any one of claims 1 to 6.
A first chamber connected to the first face plate of the spiral movement mechanism;
A second chamber connected to the second face plate of the spiral movement mechanism;
Equipped with a horizontal rotary furnace. The horizontal rotary furnace according to claim 7, further comprising: a third chamber provided with one more of the other spiral movement mechanism and connected to a second face plate of the another another spiral movement mechanism. The horizontal rotary furnace according to claim 7 or 8, wherein a circulation mechanism for circulating solid particles inside is installed in at least one of the first chamber and the second chamber.

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