CN107936998A - A kind of grain size grading charging rapid pyrolysis apparatus and method - Google Patents
A kind of grain size grading charging rapid pyrolysis apparatus and method Download PDFInfo
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- CN107936998A CN107936998A CN201711289751.XA CN201711289751A CN107936998A CN 107936998 A CN107936998 A CN 107936998A CN 201711289751 A CN201711289751 A CN 201711289751A CN 107936998 A CN107936998 A CN 107936998A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
- C10B47/22—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge in dispersed form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
Present invention relates particularly to a kind of grain size grading charging rapid pyrolysis apparatus and method, including：Radiant tube and housing, the housing include：Inner wall and shell wall, the inner wall are arranged at the inside of the shell wall, and the cross section for making the housing is in rectangular-ambulatory-plane；The radiant tube layering is arranged in the housing, and four ribs of the shell wall are respectively set to plane section, and multiple circular spray material ports are evenly arranged with the plane section.The present invention not only can guarantee that effective pyrolysis of large-size particles using stratified feeding by the way of, also can guarantee that short grained effectively pyrolysis, and small particle due to the penetrating at lower position, only taken up the limited space of stove, it is very energy saving.
Description
Technical field
The invention belongs to low temperature pyrogenation processing technology field in coal chemical industry, fossil fuel, and in particular to a kind of grain size grading
Feed rapid pyrolysis apparatus.
Background technology
The energy resource structure present situation in China is rich coal, oil-poor, gas, world today's petroleum resources gradually decrease less, increasingly deficient,
China's petroleum resources shortage is particularly acute, and substantial amounts of petroleum resources relies on import.The deficient serious China that restricts of petroleum resources passes through
Ji and social development, while the burning of a large amount of fossil fuels, and bring serious environmental problem, such as dust, PM2.5, acid rain, temperature
Room gas etc..Coal liquifaction, coal gas technology, pyrolysis, gasification, liquefaction technology are greatly developed, on the one hand can effectively alleviate China
Petroleum resources shortage, the poverty-stricken situation of heavy dependence import；On the other hand the utilization of the fossil fuels such as coal is reduced, can effectively be solved
Certainly problem of environmental pollution, at present, the environmental problem that China's rapid economic development faces.According to incompletely statistics, China have 90% with
On lignite be used for station boiler and various Industrial Boilers.The low-order coals such as lignite are directly burnt as power fuel, are not only wasted
The hydrocarbon rich resource contained in coal, and efficiency is low, pollution weight.Pass through middle low temperature pyrogenation technology and coal-char combustion, gas
Dissolve coupling, realize low order coal grading high-efficiency cleaning trans-utilization, be the Main way of present large-scale coal chemical industry.
Modern Coal-based Chemical is the high-efficiency cleaning trans-utilization for realizing the carbon-containing fuels such as low-order coal, has developed a variety of comprehensive coals
Chemical Engineering Technology, pyrolysis-burning decoupling, pyrolysis-chemicals decoupling, pyrolysis-gasification decoupling etc., but really realize it is industrialized not
It is more, encounter various technical barrier during amplifying from pilot scale to industrialization.Wherein designed especially with pyrolysis reactor, is follow-up net
It is especially prominent to change treatment process.At present, some gas retorts can only be used for being pyrolyzed block oil shale and coal, and small particle material can not profit
With resource utilization is low, and granular material is because that can not utilize and bulk deposition；The type of furnace using gas as heat carrier, because condensation is recycled
System is huge, and pyrolysis gas calorific value is low, the problems such as tar yield is low, it is difficult to which further genralrlization is demonstrated；Stove using solid as heat carrier
The problems such as type, then there are raw material and heat carrier uniformly to mix, separation, and limit it and further develop.
Heat accumulating type fast pyrogenation stove is a kind of type of furnace being pyrolyzed using powder raw material, has device simple, pyrolysis is fast
Spend the advantages that fast.Existing heat accumulating type fast pyrogenation stove uses heat accumulation type radiant tube technology, accomplish temperature can with even temperature control, but
It is yet to have improved space, such as treating capacity is low, and effective classification pyrolysis can not be carried out to particle diameter, therefore it is also improved
Space.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of grain size grading feed rapid pyrolysis apparatus, using be layered into
The mode of material revolutionizes the limitation that the particle diameter of different scale scope enters pyrolysis installation in the lump, since coal dust is from different height
Position at sprayed into, the high place in position can spray into the big coal dust of particle diameter, and the low place in position can spray into particle diameter
Small coal dust, this effective pyrolysis that not only can guarantee that large-size particles, also can guarantee that short grained effectively pyrolysis, and granule
Footpath due at lower position spray into, only taken up the limited space of stove, it is very energy saving.
To solve the above problems, the technical solution adopted by the present invention is：
A kind of grain size grading feeds rapid pyrolysis apparatus, including：Radiant tube and housing, wherein,
The housing includes：Inner wall and shell wall, the inner wall are arranged at the inside of the shell wall, make the shell
The cross section of body is in rectangular-ambulatory-plane；
The radiant tube layering is arranged in the housing, and every layer of radiant tube includes：More I type radiant tubes and Duo Gen
II type radiant tube, the I type radiant tube are vertically installed on the shell wall wall of the housing；The II type radiant tube is obliquely installed
In on the shell wall of the housing；The length of the II type radiant tube is more than the length of the I type radiant tube；
Four ribs of the shell wall are respectively set to plane section, and multiple circular material sprays are evenly arranged with the plane section
Mouthful.
Further, further include：Welding wire,
The welding wire has more, and is fixed on the inner wall；
The every I type radiant tube, II type radiant tube are connected by the welding wire with the inner wall respectively；
The II type radiant tube is obliquely installed on the shell wall of the clinodiagonal both sides of the housing.
Further, the angle of the II type radiant tube and the shell wall is 15~35 °.
Further, the height of the plane section accounts for the 4/5 of the body height, the plane section and horizontal or vertical side
To in a certain angle, the angle is 25~45 °.
Further, the circular spray material port is located at the middle part of radiant tube described in adjacent two layers, radiation described in adjacent two layers
The distance of pipe is 0.5~1m.
Further, the I type radiant tube, II type radiant tube take the shape of the letter U structure, and the U-shaped structure is vertically arranged to described
On shell wall；The openend of the U-shaped structure is provided with round platform portion, and the semi-cone angle in the round platform portion is within 10 °；The U-shaped
The openend of structure has camber angle, and the angle of the camber angle is within 10 °.
Further, it is provided with exhaust outlet on the shell wall.The bottom of the shell wall is pyramidal structure, the taper
The bottom of structure is provided with discharge port.
Further, it is more than into the particle diameter of the raw material of the circular spray material port positioned at the plane section top and enters position
In the particle diameter of the raw material of the circular spray material port of the plane section lower part；
The circle spray material port is by the inclined penetrating housing of the raw material；
Switch is provided with the circle spray material port, for controlling the disengaging of the raw material.
Further, the inner wall forms intermediate bin, sets safety opening, thermoelectricity occasionally to observe on the inner wall
Hole, the access path as the pyrolysis installation.
A kind of method being pyrolyzed using grain size grading charging rapid pyrolysis apparatus, it is characterised in that including following step
Suddenly：
1) coal dust of different-grain diameter is sent into different circular spray material ports by air-introduced machine；
2) coal dust of different-grain diameter enters in pyrolysis installation under the carrying of air-flow from different spouts, and multilayer radiant tube will
Temperature control in device is in 450~1000 DEG C of scopes, preferably 700-900 DEG C；Coal dust stops 5-10S in pyrolysis installation, no
400-950 DEG C is heated to the coal dust sprayed at position；
3) pyrolysis gas produced is discharged by exhaust outlet, and the pyrolysis char of generation is discharged by pyrolysis furnace bottom.
The beneficial effects of the present invention are：
(1) by the way of stratified feeding, the particle diameter of different scale scope is revolutionized in the lump into pyrolysis installation
Limitation, due to being sprayed at the never level position of coal dust, the high place in position can spray into the big coal dust of particle diameter, and position
The place set low can spray into the small coal dust of particle diameter, and this effective pyrolysis that not only can guarantee that large-size particles, also can guarantee that small
Effective pyrolysis of particle, and small particle due to being sprayed at lower position, only taken up the limited space of stove, saved very much
Energy.
(2) half that area shared by U-typed radiant tube arrangement is the area for using " straight " type radiant tube is used, greatly
The floor space of pyrolysis oven is saved, then under identical floor space, more U-typed radiant tubes, treating capacity can be increased
Increase.
(3) it is that sideling incident direction is sprayed into pyrolysis oven from the coal dust that nozzle sprays into, not only takes full advantage of material and exist
Longitudinal residence time in stove, also add the horizontal residence time of material, material is more fully pyrolyzed.
(4) U-typed radiant tube effectively prevents abrasion of the particle to radiant tube using mode is vertically arranged so that heat
The service life for solving stove is longer；The coking phenomenon for reducing lower floor's radiant tube is also helped, especially for the coal of caking property.
(5) " return " inside shape pyrolysis oven and be arranged to intermediate bin, intermediate bin can as the access path of interior side radiation tube,
Safety can be set to be open or arrange thermocouple and peep hole etc., the safety and maintenance that general warranty pyrolysis oven uses.
Brief description of the drawings
Fig. 1 feeds one layer of radiant tube in rapid pyrolysis apparatus for grain size grading of the present invention and sets schematic diagram.
Fig. 2 feeds rapid pyrolysis apparatus front view for grain size grading of the present invention.
Fig. 3 feeds rapid pyrolysis apparatus side view for grain size grading of the present invention.
Fig. 4 feeds rapid pyrolysis apparatus external structure schematic diagram for grain size grading of the present invention.
Fig. 5 feeds rapid pyrolysis apparatus top view for grain size grading of the present invention.
Fig. 6 is the plane section schematic diagram that grain size grading of the present invention feeds rapid pyrolysis apparatus.
Fig. 7 feeds rapid pyrolysis apparatus stereogram for grain size grading of the present invention.
Fig. 8 feeds radiant tube in rapid pyrolysis apparatus for grain size grading of the present invention and sets schematic diagram.
Wherein, 1, II type radiant tube 2, I type radiant tube 3, welding wire 4, shell wall 5, inner wall.
Embodiment
In order to make those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.It note that the embodiments described below is exemplary, be only used for explaining the present invention, and
It is not considered as limiting the invention.Particular technique or condition are not specified in embodiment, according to document institute in the art
The technology or condition of description are carried out according to product description.Reagents or instruments used without specified manufacturer, being can
With conventional products that are commercially available.
According to an aspect of the present invention, the present invention provides a kind of grain size grading to feed rapid pyrolysis apparatus, including：Spoke
Pipe and housing are penetrated, Fig. 5 feeds rapid pyrolysis apparatus top view for grain size grading of the present invention, as shown in figure 5, the housing includes：
Inner wall and shell wall, the inner wall are arranged at the inside of the shell wall, and the cross section for making the housing is in rectangular-ambulatory-plane；Figure
2 feed rapid pyrolysis apparatus front view for grain size grading of the present invention, and Fig. 3 feeds rapid pyrolysis apparatus side for grain size grading of the present invention
View, as shown in Figures 2 and 3, the radiant tube layering are arranged in the housing, and Fig. 1 is fast for grain size grading of the present invention charging
One layer of radiant tube sets schematic diagram in fast pyrolysis installation, as shown in Figure 1, every layer of radiant tube includes：More I type radiant tubes and
More II type radiant tubes, the I type radiant tube are vertically installed on the shell wall wall of the housing, facilitate ignition control to radiate
Pipe；The II type radiant tube is obliquely installed on the shell wall of the clinodiagonal both sides of the housing；The II type radiant tube
Length is more than the length of the I type radiant tube；Fig. 4 feeds the signal of rapid pyrolysis apparatus external structure for grain size grading of the present invention
Figure, Fig. 7 feed rapid pyrolysis apparatus stereogram, as shown in figs. 4 and 7, four of the shell wall for grain size grading of the present invention
Rib is respectively set to plane section, and multiple circular spray material ports are evenly arranged with the plane section.
According to a particular embodiment of the invention, the present invention taken into full account material when being pyrolyzed in different-grain diameter into
Material enters in stove pyrolysis time when being pyrolyzed from top at the same time.Under normal circumstances, dress is reacted in conventional pyrolysis installation
In putting, the feed coal under different-grain diameter can be fallen from top to bottom at the top of pyrolysis installation at the same time, be pyrolyzed by the heating of radiant tube,
This has unavoidably resulted in the small particle diameter of grain diameter and has completed fully to be pyrolyzed during by from top to bottom,
And the particle diameter pyrolysis of opposite bulky grain is also possible to insufficient, fugitive constituent recovery rate does not reach requirement also.If improve this feelings
Condition is, it is necessary to consider to take into account the suitable dimension of small particle and large-sized centre at the same time, this not only adds the waste of heat, goes back
To the claimed range higher of coal；And this limitation is revolutionized by the way of stratified feeding, since coal dust is from different height
Sprayed at the position of degree, the high place in position can spray into the big coal dust of particle diameter, and the low place in position can spray into grain
The small coal dust in footpath, this effective pyrolysis that not only can guarantee that large-size particles, also can guarantee that short grained effectively pyrolysis, Er Qie little
Particle diameter due at lower position spray into, only taken up the limited space of stove, it is very energy saving.
According to a particular embodiment of the invention, as shown in Figure 1, the opening of the U-shaped structure of I type radiant tube and II type radiant tube
End is provided with round platform portion, and the round platform portion has certain camber angle from inside to outside, the angle of round platform semi-cone angle within 10 °,
The effect for being arranged to inclination angle is when passing through radiant tube outer edge to make material fall, to play certain rebound effect, make
Material is again returned on radiant tube and is pyrolyzed；Meanwhile the openend of the U-shaped structure has camber angle, the camber angle
Angle be 10 ° within.
In some preferred embodiments of the present invention, I type radiant tube is arranged with shell wall into vertical distribution；II type spoke
Penetrate pipe and be slightly longer than I type radiant tube, the both sides for being evenly arranged in housing clinodiagonal of II type radiant tube, the horizontal line of radiant tube with
The angle of housing clinodiagonal is 15 °~35 °, preferably 20 °~30 °.Rational angle control advantageously ensures that II type radiant tube
The uniform heat distribution of offer, angle is excessive to be overheated with the too small regional area that can all make II type radiant tube, causes heat to be distributed
It is uneven；In the same plane, remaining radiant tube uses such a arrangement.
According to a particular embodiment of the invention, as shown in figure 3, being longitudinally arranged in radiant tube, same layer radiant tube
Arrangement is identical with the projecting direction of last layer radiant tube, it is not necessary to rotation angle.In the tube spacing of upper and lower two layers of radiant tube
Between 0.5m~1m, Fig. 8 feeds radiant tube in rapid pyrolysis apparatus for grain size grading of the present invention and sets schematic diagram, as shown in figure 8,
Multilayer radiant tube is in the intensive setting of housing.
According to a particular embodiment of the invention, exhaust outlet is arranged at the right middle region of the housing, for discharging heat
Pyrolysis oil gas after solution；The bottom of the shell wall is pyramidal structure, and the bottom of the pyramidal structure is provided with discharge port.
According to a particular embodiment of the invention, on four ribs of rapid pyrolysis apparatus housing, respectively from top to bottom
Cut out a plane section, plane section distance accounts for 4/5 of overall case height or so, as shown in fig. 7, on each plane section from top to
Several circular spray material ports are uniformly made in bottom, and the position of circular spout is located at adjacent two layers of radiant tube up and down and organizes to be formed respectively
Plane middle position.It is to use both sides symmetrical structure that plane section notch, which is not, but as shown in Figure 1, section is with erecting
Straight planar shaped has a certain degree α, 10 °<α<80 °, preferably 25 °<α<45 °, choose 30 ° when be optimal.Suitable angle, can be with
Coal dust is set to form certain imaginary circle after spraying into pyrolysis installation, the circle of contact too conference makes material impact exterior wall, and material concentrates on outer
Side, forms hot-spot, the circle of contact is too small to make material impact interior wall, and material concentrates on inner side, forms hot-spot；It is so suitable
Imaginary circle can make material uniformly above the radiant tube of distribution pass through, form stable pyrolytical condition.
In addition from treating capacity, inventor has found that the present apparatus is that disposal ability is in identical radiant tube arrangement space
More than 5 times of lower conventional rapid thermal solution device (front and rear penetrating radiation pipe structure arrangement), conventional heat accumulating type rapid pyrolysis apparatus
Using vertical, radiant tube is front and rear through side before and after furnace body, and separate unit disposal ability is limited, under identical heat exchange area,
It is using the half of the area of " straight " type radiant tube using area shared by U-typed radiant tube arrangement, is greatly saved pyrolysis
The floor space of device, then under identical floor space, can increase more U-typed radiant tubes, treating capacity increases.Separately
Outside, due to using " returning " font surrounding arrangement, compared to " mouth " type structure of conventional pyrolysis device, in pyrolysis installation corner
The radiant tube arrangement of diagonal adjacent position is even more important, due to taking II type radiant tube and suitable angle so that
Temperature Distribution and material distribution in this region is more uniform, ensures pyrolysis effect.
According to a particular embodiment of the invention, the coal dust sprayed at circular spray material port is that sideling incident direction sprays into pyrolysis
In device, this not only takes full advantage of longitudinal residence time of the material in stove, also add the horizontal residence time of material, makes
Material can be more fully pyrolyzed.
According to a particular embodiment of the invention, as shown in Fig. 2, U-typed radiant tube is effectively prevented using mode is vertically arranged
Abrasion of the particle to radiant tube is stopped so that the service life of pyrolysis installation is longer；U-typed radiant tube is vertically arranged mode,
The coking phenomenon for reducing lower floor's radiant tube is also helped, especially for the coal of caking property.
In some preferred embodiments of the present invention.Inside " returning " shape pyrolysis installation, i.e., inner wall is formed region,
Intermediate bin is arranged to, intermediate bin can also set safety to be open or arrange heat as the access path of interior side radiation tube
Galvanic couple and peep hole etc., the safety and maintenance that general warranty pyrolysis installation uses.
According to another aspect of the present invention, carried out the present invention provides a kind of using grain size grading charging rapid pyrolysis apparatus
The method of pyrolysis, comprises the following steps：
1) coal dust of different-grain diameter is sent into different circular spray material ports by air-introduced machine；
2) coal dust of different-grain diameter enters in pyrolysis installation under the carrying of air-flow from different spouts, and multilayer radiant tube will
Temperature control in device is in 450~1000 DEG C of scopes, preferably 700-900 DEG C；Coal dust stops 5-10S in pyrolysis installation, no
400-950 DEG C is heated to the coal dust sprayed at position；
3) pyrolysis gas produced is discharged by exhaust outlet, and the pyrolysis char of generation is discharged by pyrolysis furnace bottom.
In the specific embodiment of the present invention, method of the invention specifically includes：
(1) coal dust through the dried different-grain diameter of drier is sent into fast pyrogenation dress by corresponding air-introduced machine respectively
In the circular spray material port for the surrounding put；
(2) coal dust sprays into pyrolysis installation under air-flow carrying from different spouts, and coal dust forms imagination in pyrolysis installation
Circle of contact mode, has been evenly arranged U-typed heat accumulation type radiant tube in pyrolysis installation, and tube wall temperature is controlled using gas control valve
450~1000 DEG C of scopes, preferably 700-900 DEG C.At most stop 5-10S from top to bottom in the reactor, sprayed at diverse location
Coal dust be heated to 400-950 DEG C, preferably 800~900 DEG C, complete pyrolytic process；
(3) pyrolysis gas produced in pyrolysis installation is discharged by the exhaust outlet of rapid pyrolysis apparatus, enters follow-up pyrolysis
Air purifying apparatus, the pyrolysis char of generation are discharged by the discharge port of pyrolysis installation bottom.
It should be noted that in actual operational process, can be according to the specific nozzle exit area of actual selection, can also
Go out the spout of most suitable position for specific coal mould rope by testing, carry out long term test after selected, corresponding spout can be with
Controlling switch at any time, does not influence the normal operation of other spouts.The temperature in temperature field can be adjusted in several ways in pyrolysis installation
Section, for example, number of the adjustment heat accumulation type radiant tube in the horizontal direction and/or on vertical direction；The number of plies of heat accumulation type radiant tube；Store
Spacing (vertical direction and/or horizontal direction) between hot type radiant tube；The temperature of each heat accumulation type radiant tube in itself etc..
Embodiment one
Using 0-6mm coal dusts as raw material, pyrolytic process is carried out to it using pyrolysis installation, the coal dust of 1-3mm is subjected to particle diameter
The screening classification of distribution, particle diameter distribution after screening are as shown in table 1.
The coal particle diameter distribution of 1 Indonesia coal of table
The basic data of the coal quality of Indonesia's lignite is as shown in table 2 below.
The basic data of 2 Indonesia coal of table
For the temperature Uniting of radiant tube into 900 degree, purpose predominantly increases pyrolysis gas yield, reduces tar yield, more
Add economic benefit.Assuming that the numbering of nozzle exit area from the top to the bottom is respectively 1,2,3,4,5 and 6, then at different positions
The coal particle size correspondence that spout sprays into is as shown in table 3.
Table 3：Process operation parameter
| Numbering | Particle size range | Percentage (%) |
| 1 | 3~6mm | 4.26 |
| 2 | 2~3mm | 16.67 |
| 3 | / | / |
| 4 | 1~2mm | 13.89 |
| 5 | 0.18~1mm | 43.85 |
| 6 | 0~0.18mm | 21.33 |
Pressure in device is 1.5Kpa, and treating capacity is 20t/h fast pyrolysis systems, when operation 1000 is small, obtain half
1.08 ten thousand tons burnt, 0.72 ten thousand tons of pyrolysis gas, is pyrolyzed totally 0.2 ten thousand tons of grease.
In conclusion the grain size grading charging rapid pyrolysis apparatus of the present invention, is thoroughly changed by the way of stratified feeding
The particle diameter of different scale scope enters the limitation of pyrolysis installation in the lump, due to being sprayed at the never level position of coal dust
Enter, the high place in position can spray into the big coal dust of particle diameter, and the low place in position can spray into the small coal dust of particle diameter, it is this not
Only can guarantee that effective pyrolysis of large-size particles, also can guarantee that short grained effectively pyrolysis, and small particle due to from low level
Put place to spray into, only take up the limited space of stove, it is very energy saving.It is to use using area shared by U-typed radiant tube arrangement
The half of the area of " straight " type radiant tube, is greatly saved the floor space of pyrolysis oven, can then under identical floor space
To increase more U-typed radiant tubes, treating capacity increases.The coal dust sprayed into from nozzle is that sideling incident direction sprays into pyrolysis oven
It is interior, longitudinal residence time of the material in stove is not only taken full advantage of, the horizontal residence time of material is also add, enables material
It is enough to be more fully pyrolyzed.U-typed radiant tube effectively prevents mill of the particle to radiant tube using mode is vertically arranged
Damage so that the service life of pyrolysis oven is longer；U-typed radiant tube is vertically arranged mode, also helps and reduces lower floor's radiant tube
Coking phenomenon, especially for the coal of caking property.Intermediate bin is arranged to inside " returning " shape pyrolysis oven, intermediate bin can conduct
The access path of interior side radiation tube, can also set safety to be open or arrange thermocouple and peep hole etc., general warranty pyrolysis
The safety and maintenance that stove uses.
In the description of the present invention, it is to be understood that term " first ", " second " are only used for description purpose, and cannot
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
Combined in an appropriate manner in a or multiple embodiments or example.In addition, without conflicting with each other, the technology of this area
Different embodiments or example described in this specification and different embodiments or exemplary feature can be combined by personnel
And combination.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, meanwhile, for those of ordinary skill in the art, the think of according to the application
Think, in specific embodiments and applications there will be changes.
Claims (10)
1. a kind of grain size grading feeds rapid pyrolysis apparatus, including：Radiant tube and housing, it is characterised in that wherein,
The housing includes：Inner wall and shell wall, the inner wall are arranged at the inside of the shell wall, make the housing
Cross section is in rectangular-ambulatory-plane；
The radiant tube layering is arranged in the housing, and every layer of radiant tube includes：More I type radiant tubes and II types of Duo Gen
Radiant tube, the I type radiant tube are vertically installed on the shell wall wall of the housing；The II type radiant tube is obliquely installed in institute
State on the shell wall of housing；The length of the II type radiant tube is more than the length of the I type radiant tube；
Four ribs of the shell wall are respectively set to plane section, and multiple circular spray material ports are evenly arranged with the plane section.
2. device according to claim 1, it is characterised in that further include：Welding wire,
The welding wire has more, and is fixed on the inner wall；
The every I type radiant tube, II type radiant tube are connected by the welding wire with the inner wall respectively；
The II type radiant tube is obliquely installed on the shell wall of the clinodiagonal both sides of the housing.
3. device according to claim 1, it is characterised in that the angle of the II type radiant tube and the shell wall is 15
~35°。
4. device according to claim 1, it is characterised in that the height of the plane section accounts for the 4/5 of the body height,
The plane section and horizontal or vertical direction are in a certain angle, and the angle is 25 ~ 45 °.
5. device according to claim 1, it is characterised in that the circle spray material port is located at radiant tube described in adjacent two layers
Middle part, the distance of radiant tube described in adjacent two layers is 0.5 ~ 1m.
6. device according to claim 1, it is characterised in that the I type radiant tube, II type radiant tube take the shape of the letter U structure, institute
U-shaped structure is stated to be vertically arranged on the shell wall；The openend of the U-shaped structure is provided with round platform portion, the round platform portion
Semi-cone angle is within 10 °；The openend of the U-shaped structure has camber angle, and the angle of the camber angle is within 10 °.
7. device according to claim 1, it is characterised in that exhaust outlet is provided with the shell wall,
The bottom of the shell wall is pyramidal structure, and the bottom of the pyramidal structure is provided with discharge port.
8. device according to claim 1, it is characterised in that enter the circular material spray positioned at the plane section top
The particle diameter of the raw material of mouth is more than the particle diameter for the raw material for entering the circular spray material port positioned at the plane section lower part；
The circle spray material port is by the inclined penetrating housing of the raw material；
Switch is provided with the circle spray material port, for controlling the disengaging of the raw material.
9. device according to claim 1, it is characterised in that the inner wall forms intermediate bin, is set on the inner wall
Put safe opening, thermoelectricity occasionally peep hole, the access path as the pyrolysis installation.
10. the method that one kind is pyrolyzed using the device described in claim 1 ~ 9, it is characterised in that comprise the following steps：
1）The coal dust of different-grain diameter is sent into different circular spray material ports by air-introduced machine；
2）The coal dust of different-grain diameter enters in pyrolysis installation under the carrying of air-flow from different spouts, and multilayer radiant tube is by device
Interior temperature control is in 450~1000 DEG C of scopes, preferably 700-900 DEG C；Coal dust stops 5-10S, different positions in pyrolysis installation
The coal dust that the place of putting sprays into is heated to 400-950 DEG C；
3）The pyrolysis gas of generation is discharged by exhaust outlet, and the pyrolysis char of generation is discharged by pyrolysis furnace bottom.
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Application publication date: 20180420 |