CN116351197A - Flue gas distributor, adsorption tower and low-temperature flue gas adsorption system - Google Patents

Abstract

The invention relates to the technical field of flue gas purification and discloses a flue gas distributor, an adsorption tower and a low-temperature flue gas adsorption system. The flue gas distributor comprises a plurality of flue gas distribution pipes, the flue gas distribution pipes are horizontally arranged, the flue gas distribution pipes are mutually parallel and are arranged at intervals along the first horizontal direction, the flue gas distribution pipes are provided with opposite first ends and second ends in the extending direction, at least one of the first ends and the second ends is opened to form a flue gas inlet, the flue gas distribution pipes are provided with a plurality of flue gas distribution holes positioned at the upper part of the flue gas distribution pipes on the cross section of the flue gas distribution pipes, and a channel for the adsorbent blanking is formed at intervals between every two adjacent flue gas distribution pipes. The flue gas distributor has the advantages of simple structure, greatly reduced height in the vertical direction, reduced space occupied in the vertical direction when being applied to the adsorption tower, reduced height of an adsorption bed layer in the adsorption tower, difficult blockage and good practicability and reliability.

Description

Flue gas distributor, adsorption tower and low temperature flue gas adsorption system

technical field

The invention relates to the technical field of flue gas adsorption, in particular to a flue gas distributor, an adsorption tower and a low-temperature flue gas adsorption system.

Background technique

Flue gas adsorption is to use the adsorbent in the adsorption bed in the adsorption tower to remove the pollutant components from the flue gas, so as to purify the flue gas. The common flue gas adsorption towers are fixed bed type and moving bed type, among which the moving bed type adsorption tower can better ensure the adsorption efficiency and adsorption capacity of the adsorption bed than the fixed bed type adsorption tower. In the moving bed adsorption tower, the adsorbent is constantly moving downwards and the flow direction of the flue gas is opposite to that of the adsorbent. However, in the related art, the flue gas is even in contact with the adsorbent in the adsorbent tower, and the adsorption effect is not uniform, especially in the moving bed adsorption tower, the problem is particularly obvious.

Contents of the invention

The present invention is based on the inventor's discovery and recognition of the following facts and problems:

The applicant's prior authorized patent describes a moving bed adsorption tower, which adopts a split distributor and a plurality of downpipes for material dropping and flue gas distribution. The inventor realized through further research that the distributor and the drop pipe of the adsorption tower occupy a relatively large space in the vertical direction (generally occupying a height of 1m-2m), and this space is not the adsorbent layer section of the adsorption bed. , leading to a large proportion of the space occupied by the ineffective adsorption area in the adsorption tower, and a decrease in the adsorption capacity, which in turn leads to a higher overall height and a larger volume of the adsorption tower, which increases the construction cost of the tower body. It is easy to cause the problem of weak tower body stability and easy shaking of the tower body.

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the present invention proposes a horizontally arranged smoke distributor, which has a simple structure and occupies less space in the vertical direction.

The present invention also proposes an adsorption tower with the above-mentioned flue gas distributor, and a low-temperature flue gas adsorption system including the adsorption tower.

The smoke distributor of the present invention includes: several smoke distribution pipes, the smoke distribution pipes are arranged horizontally, the several smoke distribution pipes are parallel to each other and arranged at intervals along the first horizontal direction, and the smoke distribution pipes are arranged at intervals along the first horizontal direction. It has an opposite first end and a second end in its extension direction, at least one of the first end and the second end is opened to form a smoke inlet, and on the cross section of the smoke distribution pipe, the The flue gas distribution pipe is provided with a plurality of flue gas distribution holes on its upper part, and the interval between two adjacent flue gas distribution pipes forms a channel for adsorbent dropping.

Optionally, the pores of the smoke distribution holes are smaller than the particle size of the adsorbent to prevent the adsorbent from falling into the smoke distribution pipe through the smoke distribution holes

Optionally, the lower part of the flue gas distribution pipe is provided with a material leakage port, the smallest size of which is larger than the particle size of the adsorbent, and the material leakage port is used to make the The adsorbent leaks out.

Optionally, the smoke distribution pipe is a mesh pipe, the mesh holes on the upper part of the smoke distribution pipe are the smoke distribution holes, and the mesh holes on the lower part of the smoke distribution pipe are the Describe the leakage port.

Optionally, the bottom of the smoke distribution pipe is open to form a strip-shaped leakage opening, and the extending direction of the leakage opening is the same as that of the smoke distribution pipe.

Optionally, the smoke distribution pipe is a circular pipe, and the central angle corresponding to the leakage opening is 10°-30°.

Optionally, the height of the smoke distributor in the vertical direction is 80mm-300mm; and/or, the interval between two adjacent smoke distribution pipes is 50-80mm.

The present invention also proposes an adsorption tower, comprising: a tower body, a movable adsorption bed is arranged in the tower body, a feed inlet is arranged at the top of the tower body, and a discharge outlet is arranged at the bottom of the tower body, The side wall of the tower body is provided with a flue gas inlet and a flue gas outlet, and the flue gas outlet is located above the adsorption bed; a flue gas distributor, the flue gas distributor is the above-mentioned flue gas distributor, and the flue gas The gas distributor is arranged in the tower body and is located below the adsorption bed, the smoke inlet of the flue gas distributor communicates with the flue gas inlet, and the adsorbent in the adsorption bed flows from two adjacent The space between the flue gas distribution pipes falls and is discharged from the tower body through the outlet.

Optionally, the smoke inlet includes a first smoke inlet and a second smoke inlet, the first end of the smoke distribution pipe has a first smoke inlet, and the second end of the smoke distribution pipe has a The second smoke inlet, the first smoke inlet communicates with the first smoke inlet, and the second smoke inlet communicates with the second smoke inlet; and/or, the vertical direction of the adsorption tower The height is 3.0m-6.0m.

The present invention also proposes a low-temperature flue gas adsorption system, including: a flue gas cooling device, the flue gas cooling device is used to cool the flue gas to room temperature or below room temperature; an adsorption tower, the adsorption tower is the above-mentioned adsorption tower, The smoke outlet of the flue gas cooling device communicates with the flue gas inlet of the adsorption tower; the regeneration tower, the regeneration tower is used to regenerate the adsorbent, and the discharge port of the adsorption tower is connected to the regeneration inlet of the regeneration tower The regeneration outlet of the regeneration tower communicates with the feed inlet of the adsorption tower.

The flue gas distributor of the present invention includes several flue gas distribution pipes arranged horizontally, the flue gas circulates in the pipes of the flue gas distribution pipes, and the flue gas distribution holes distributed on the upper part of the flue gas distribution pipes realize the uniform dispersion of the flue gas, which is compatible with the adsorption The agent contacts evenly, promotes the smoke to be adsorbed and purified evenly, and improves the purification effect. The flue gas distributor of the present invention is especially suitable for moving bed adsorption towers, the flue gas distributor is placed under the adsorption bed, and the space between two adjacent flue gas distribution pipes can be used for the blanking of the adsorbent in the adsorption bed, that is The flue gas distributor realizes the dual functions of blanking and flue gas dispersion, and the functions are integrated, replacing the split distributor and multiple vertically extending vertically extending distributors in the related art. The height of the adsorption tower is significantly reduced, reducing the proportion of the invalid packing area in the adsorption tower, which helps to reduce the height of the tower body of the adsorption tower (the height can be reduced by at least 1 meter), or in other words, at the same height, the application of the flue gas of the present invention The adsorption tower of the distributor can be filled with more adsorbents to obtain better adsorption effect and adsorption efficiency.

Description of drawings

Fig. 1 is a front sectional view of an adsorption tower of an embodiment of the present invention.

Fig. 2 is a side sectional view of the adsorption tower of the embodiment of the present invention.

Fig. 3 is a top view of the smoke distributor of the embodiment of the present invention.

Fig. 4 is a front view of the smoke distributor of the embodiment of the present invention.

Fig. 5 is a bottom view of a smoke distributor according to another embodiment of the present invention.

Fig. 6 is a side view of the smoke distribution pipe in Fig. 5 .

Reference signs:

Smoke distributor 100, smoke distribution pipe 110, first smoke inlet 121, second smoke inlet 122, smoke distribution hole 130, leakage port 140, leakage hole 141, leakage groove 142,

Adsorption tower 200, adsorption bed 210, tower body 220, material inlet 221, material outlet 222, flue gas inlet 223, first flue gas inlet 2231, second flue gas inlet 2232, flue gas outlet 224, adsorption chamber 225, Blanking cavity 226, control valve 227.

Detailed ways

Embodiments of the invention will be described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The following describes the flue gas distributor 100 , the adsorption tower 200 with the flue gas distributor 100 , and the low-temperature flue gas adsorption system including the adsorption tower 200 of the present invention with reference to FIGS. 1-6 .

The smoke distributor 100 of the embodiment of the present invention includes several smoke distribution pipes 110, the smoke distribution pipes 110 are arranged horizontally, the several smoke distribution pipes 110 are arranged parallel to each other and spaced along the first horizontal direction, and the smoke distribution pipes 110 are arranged at intervals along the first horizontal direction. There are opposite first ends and second ends in the extension direction, at least one of the first end and the second ends is opened to form a smoke inlet, and a plurality of smoke distribution holes 130 are distributed on the upper part of the smoke distribution pipe 110 for upward Diffuse fumes. Here, it should be understood that the upper part of the smoke distribution pipe refers to that, in the cross section of the smoke distribution pipe, the smoke distribution holes are located on the upper half of the smoke distribution pipe 110, for example, the smoke distribution holes are located in the upper half of the smoke distribution pipe. Above the horizontal centerline of the cross-section of the pipe 110, preferably at the top of the flue gas distribution pipe. The interval between two adjacent flue gas distribution pipes 110 forms a channel for adsorbent dropping, thereby preventing most of the adsorbent particles from falling into the flue gas distribution pipes 110 .

There is a gap between two adjacent flue gas distribution pipes 110 for the adsorbent to fall. The flue gas distributor 100 is applied to the adsorption tower 200, and the adsorbent particles in the adsorption bed 210 in the adsorption tower 200 fall through several intervals formed between the flue gas distribution pipes 110 to reduce the problem of adsorbent clogging.

The smoke distributor proposed by the embodiment of the present invention includes several horizontally arranged smoke distribution pipes, the smoke circulates in the pipes of the smoke distribution pipes, and the smoke distribution holes distributed in the upper part realize the uniform dispersion of the smoke, and the smoke and adsorption The agent is evenly contacted, and the flue gas is evenly adsorbed and purified.

The flue gas distributor of the embodiment of the present invention is especially suitable for a moving bed adsorption tower. The flue gas distributor is placed under the adsorption bed of the adsorption tower, and the space between two adjacent flue gas distribution pipes can be used for adsorption in the adsorption bed. The blanking of the agent, that is, the smoke distributor of the embodiment of the present invention realizes the functions of blanking and smoke dispersion, and the function is integrated, replacing the split distributor and the multi-layer extending in the vertical direction in the related art. The height of the vertical direction is significantly reduced, which reduces the proportion of the invalid packing area in the adsorption tower, and helps to reduce the height of the tower body of the adsorption tower (the height can be reduced by at least 1 meter). In other words, at the same height, the adsorption tower using the flue gas distributor of the embodiment of the present invention can be filled with more adsorbents to obtain better adsorption effect and adsorption efficiency.

In some embodiments, the pores of the smoke distribution holes 130 are smaller than the particle size of the adsorbent, so as to prevent the adsorbent from falling into the smoke distribution pipe through the smoke distribution holes. By limiting the pores of the smoke distribution holes 130 of the smoke distribution pipe 110 to be smaller than the particle size of the adsorbent, most adsorbent particles can be effectively prevented from entering the smoke distribution pipe 110 .

In some embodiments, a material leakage port 140 is provided at the bottom of the flue gas distribution pipe 110, and the minimum size of the material leakage port 140 is larger than the particle size of the adsorbent. Even if some adsorbent particles, such as powder, fall into the flue gas distribution pipe 110 through the flue gas distribution hole 130, the adsorbent entering the flue gas distribution pipe 110 can leak out of the flue gas distribution pipe 110 through the leakage port 140 in time, effectively avoiding Clogging of the smoke distributor 100 . The "minimum size of the leakage opening 140" refers to the narrowest dimension of the leakage opening 140. For example, the material leakage port 140 is a rectangular mouth, and its minimum size is its corresponding size in the width direction. Another example is that the material leakage port 140 is a circular mouth, and its size is the same in all directions, and the minimum size is its diameter. It is sufficient to let the adsorbent falling into the flue gas distribution pipe leak out.

In some optional embodiments, the leakage port 140 is a hole-like structure. The bottom of the smoke distribution pipe 110 is distributed with a plurality of leakage holes 141 at intervals, that is to say, the bottom of each smoke distribution pipe 110 is correspondingly provided with a plurality of leakage holes 141, and the shape of the leakage holes 141 can be square or round. shape. Preferably, a plurality of leakage holes 141 are evenly distributed at the bottom of the smoke distribution pipe 110 .

In some specific embodiments, as shown in FIG. 4 , the smoke distribution pipe 110 is a grid-shaped pipe, the mesh holes distributed on the upper part of the smoke distribution pipe 110 are smoke distribution holes 130, and the lower part of the smoke distribution pipe 110 Partially distributed mesh holes are material leakage openings 140 . That is to say, the mesh aperture in the upper part of the flue gas distribution pipe 110 is smaller than the particle diameter of the adsorbent, and the mesh aperture in the lower half is larger than the particle diameter of the adsorbent.

Optionally, the particle size of the adsorbent is 4 mesh to 8 mesh, the hole diameter of the smoke distribution hole 130 is 10 mesh to 14 mesh, and the hole diameter of the leakage port 140 is 2 mesh to 3 mesh. For example, the particle size of the adsorbent is 4 mesh, 6 mesh or 8 mesh, the hole diameter of the smoke distribution hole 130 is 10 mesh, 12 mesh or 14 mesh, and the hole diameter of the leakage port 140 is 2 mesh, 2.5 mesh or 3 mesh.

In some other embodiments, the leakage opening 140 is a groove-shaped structure. As shown in FIG. 5 , the bottom of the smoke distribution pipe 110 is open to form a strip-shaped leakage opening 140 , that is, a leakage groove 142 . The extension direction of the leakage groove 142 is the same as that of the smoke distribution pipe 110 .

Optionally, as shown in FIG. 6 , the smoke distribution pipe 110 is a circular pipe, and the central angle corresponding to the leakage groove 142 is 10°-30°. For example, the central angle corresponding to the leakage groove 142 is 10 degrees, 15 degrees, 20 degrees or 30 degrees. The central angle corresponding to the leakage groove 142 is also the size of the central angle corresponding to the notch at the bottom of the circular tube. The central angle corresponding to the leakage groove 142 is 10°-30°, so that the adsorbent particles and adsorbent powder falling into the smoke distribution pipe 110 can be smoothly discharged downward from the smoke distribution pipe 110 .

If the central angle corresponding to the leakage groove 142 is small (less than 10 degrees), the width of the leakage groove 142 is narrow, and the adsorbent particles and adsorbent powder falling into the smoke distribution pipe 110 are easy to accumulate in the smoke distribution pipe 110. If the central angle corresponding to the leakage groove 142 is large (greater than 30 degrees), the width of the leakage groove 142 is wider, which may have an impact on the structural strength of the smoke distribution pipe 110, and It may cause the flue gas in the pipe to leak from the material leakage groove 142, affecting the adsorption effect.

Optionally, the height of the smoke distributor 100 in the vertical direction is 80mm-300mm. Compared with the technical solutions of distributors and drop tubes in the related art, the space occupied by the smoke distributor 100 in the vertical direction is significantly reduced. For example, the height of the smoke distributor 100 in the vertical direction is 80mm, 200mm or 300mm.

Optionally, the interval between two adjacent smoke distribution pipes 110 is 50mm-80mm. For example, the interval between two adjacent smoke distribution pipes 110 is 50mm, 60mm or 80mm. The adsorbent falls from the gap between two adjacent flue gas distribution pipes 110, and the size of the gap affects the falling rate of the adsorbent. Therefore, the flue gas distribution pipe can be designed by considering the particle size of the adsorbent and the preset falling rate of the adsorbent. 110 intervals.

As shown in FIG. 1 , the adsorption tower 200 with the above-mentioned flue gas distributor according to the embodiment of the present invention includes a tower body 220 , and the flue gas distributor 100 is arranged in the tower body 220 . The tower body 220 is filled with a mobile adsorption bed 210. The top of the tower body 220 is provided with a feed port 221, and the bottom is provided with a discharge port 222. The side wall of the tower body 220 is provided with a flue gas inlet 223 and a flue gas outlet 224. The gas outlet 224 is located above the adsorption bed 210 . The feed port 221 is used to inject new adsorbent into the tower body 220 , the discharge port 222 is used to discharge the adsorbent saturated at the bottom of the adsorption bed 210 , and the adsorption bed 210 in the tower body 220 gradually moves downward. The flue gas distributor 100 is located below the adsorption bed 210, the smoke inlet of the flue gas distributor 100 is connected to the flue gas inlet 223, and the adsorbent in the adsorption bed 210 falls from the space between two adjacent flue gas distribution pipes 110 And discharge the tower body 210 from the outlet 222 .

The flue gas to be purified enters each flue gas distribution pipe 110 of the flue gas distributor 100 from the flue gas inlet 223 of the tower body 220, and flows upward through each flue gas distribution hole 130 of the flue gas distribution pipe 110, and evenly enters the adsorption bed 210 in contact with the adsorbent for adsorption. The adsorbent at the bottom of the adsorption bed 210 falls from the gap between two adjacent flue gas distribution pipes 110 and is discharged from the outlet 222 . At the same time, new adsorbent is put into the top of the adsorption bed 210 from the feed port 221 as a supplement. The net flue gas after pollutant removal flows out from the top of the adsorption bed 210 and exits the tower body 220 through the flue gas outlet 224 above the adsorption bed 210 .

The following describes a flue gas distributor 100 and an adsorption tower 200 having it in a specific embodiment of the present invention with reference to FIGS. 1-4 .

As shown in FIG. 1 , the adsorption tower 200 includes a tower body 220 and a flue gas distributor 100 . The top of the tower body 220 has a feed port 221, the bottom is provided with a discharge port 222, and the side wall of the tower body 220 is provided with a flue gas inlet 223 and a flue gas outlet 224, wherein the flue gas outlet 224 is located above the flue gas inlet 223 . The tower body 220 is filled with a movable adsorption bed 210, and the adsorbent in the adsorption bed 210 gradually moves downward.

As shown in FIG. 1 and FIG. 2 , the flue gas distributor 100 is arranged in the tower body 220 and is located below the adsorption bed 210 . Specifically, as shown in FIG. 2 , the flue gas distributor 100 includes several horizontally arranged flue gas distribution pipes 110, and the two ends of the flue gas distribution pipes 110 in the direction of their extension are respectively connected to the opposite inner wall surfaces of the tower body 220, To be fixed inside the tower body 220 . Several flue gas branch pipes 110 are arranged at intervals along the first horizontal direction. In this embodiment, the first horizontal direction is perpendicular to the extending direction of the smoke distribution pipe 110 .

As shown in FIG. 3 , the flue gas distribution pipe 110 is a circular pipe mesh pipe with mesh holes evenly distributed thereon. The grid holes in the upper half of the smoke distribution pipe 110 are smoke distribution holes 130 , and the grid holes in the lower half of the smoke distribution pipe 110 are leakage holes 141 . The pore diameter of the flue gas distribution hole 130 is smaller than that of the adsorbent particles in the adsorption bed 210 , and the pore diameter of the leakage hole 141 is larger than that of the adsorbent particles in the adsorption bed 210 .

As shown in FIG. 2 and FIG. 3 , during the downward movement of the adsorption bed 210 , most of the adsorbent falls from the space between adjacent flue gas distribution pipes 110 due to obstruction by the flue gas distribution pipes 110 . When a small amount of small-sized adsorbent particles or adsorbent powder fall into the smoke distribution pipe 110 from the smoke distribution hole 130 on the smoke distribution pipe 110, these adsorbent particles or adsorbent powder are The material leakage hole 141 with larger aperture at the bottom of the smoke distribution pipe 110 leaks out to avoid the blockage of the smoke distribution pipe 100 .

As shown in FIG. 2 , the first end and the second end of the smoke distribution pipe 110 in the extending direction are both open, a first smoke inlet 121 is formed at the first end, and a second smoke inlet 122 is formed at the second end. . As shown in FIG. 1 , a first flue gas inlet 2231 and a second flue gas inlet 2232 are provided on the side wall of the tower body 220 , and the first flue gas inlet 2231 and the second flue gas inlet 2232 are arranged on the extension of the flue gas distribution pipe 110 opposite in direction. The first smoke inlet 2231 communicates with the first smoke inlet 121 , and the second smoke inlet 2232 communicates with the second smoke inlet 122 . The flue gas is delivered to the flue gas distribution pipe 110 at the same time through the flue gas inlets on both sides, so that the flue gas distribution is more uniform.

As shown in Figures 1 and 2, the tower body 220 has an adsorption chamber 225 and a blanking chamber 226, the adsorption bed 210 is located in the adsorption chamber 225, the blanking chamber 226 is located below the adsorption chamber 225, and the discharge port 222 is located in the blanking chamber. The bottom of cavity 226 and communicates with it. The flue gas distributor 100 is located between the adsorption chamber 225 and the discharge chamber 226 . During the adsorption process, the adsorbent of the mobile adsorption bed 210 passes down through the flue gas distributor 100 and falls into the discharge chamber 226 , and is discharged from the discharge port 222 .

In order to make the adsorbent in the blanking cavity 226 more smoothly discharged from the discharge port 222, as shown in Figures 1 and 2, the blanking cavity 226 is an inverted cone, and the discharge port 222 is located at the bottom of the blanking cavity 226 . A control valve 227 is arranged at the material outlet 222 , and the speed of the blanking can be adjusted by manipulating the control valve 227 .

Optionally, the vertical height of the adsorption tower 200 in the embodiment of the present invention is 3.0m-6.0m. For example, 3 meters, 5 meters or 6 meters. Compared with the adsorption tower 200 adopting the flue gas distributor 100 of the embodiment of the present invention, the height of the tower body can be reduced by at least 1 meter, and the reduction of the height of the tower body helps to reduce the adsorption tower height. construction cost, improve the structural stability of the adsorption tower 200 tower body.

The smoke distributor 100 in another specific embodiment of the present invention will be described below with reference to FIG. 5 and FIG. 6 .

The smoke distribution pipe 110 is a circular pipe, and grid holes are distributed on the upper part of the smoke distribution pipe 110 , and the grid holes are smoke distribution holes 130 . As shown in FIG. 5 , the bottom of the smoke distribution pipe 110 is opened to form a strip-shaped leakage groove 142 , and the extending direction of the leakage groove 142 is the same as that of the smoke distribution pipe 110 .

In the embodiment shown in Figure 6, the central angle corresponding to the leakage groove 142 is 20 degrees, and the adsorbent particles and adsorbent powder falling into the smoke distribution pipe 110 can pass through the leakage groove 142 smoothly from the smoke distribution pipe. 110 is unloaded without affecting the structural strength of the smoke distribution pipe 110.

Flue gas low-temperature adsorption technology is to remove pollutant components from low-temperature flue gas through adsorbent adsorption. The inventor has realized through research that in a low temperature environment, usually below room temperature, preferably below zero degrees Celsius, the nitrogen oxides in the flue gas will undergo low-temperature oxidation and adsorption on the surface of adsorbents such as activated carbon, and the nitrogen monoxide gas that is difficult to adsorb will Oxidation into easily adsorbed nitrogen dioxide gas can achieve hundreds of times increase in adsorption capacity. In addition, the adsorption capacity of sulfur dioxide, carbon dioxide and heavy metals is also multiplied in low temperature environments.

However, the inventors realized through research that when low-temperature adsorption is used for flue gas purification treatment, there are problems of uneven distribution of flue gas and excessive vertical size of existing flue gas distribution structures.

The embodiment of the present invention proposes a low-temperature flue gas adsorption system. Specifically, the low-temperature flue gas adsorption system includes a flue gas cooling device, an adsorption tower 200 and a regeneration tower. The flue gas cooling device is used to cool the flue gas to room temperature or below the room temperature. The flue gas cooling device is connected with the flue gas inlet of the adsorption tower 200. The regeneration tower is used for the regeneration of the adsorbent. The outlet 222 of the adsorption tower 200 is connected to the regeneration tower The regeneration inlet of the regeneration tower is connected, and the regeneration outlet of the regeneration tower is connected with the feed port 221 of the adsorption tower 200.

After the flue gas is cooled by the flue gas cooling device, it becomes low-temperature flue gas, and the low-temperature flue gas at or below room temperature is input into the flue gas distributor 100 through the flue gas inlet 223, and the low-temperature flue gas passes through the flue gas distributor 100 and enters the The adsorption bed 210 is in contact with the adsorbent for low-temperature physical adsorption.

Preferably, the temperature of the low-temperature flue gas is minus 30°C to minus 10°C. For example, the temperature of low-temperature flue gas is minus 20°C or minus 10°C.

The saturated adsorbent at the bottom of the adsorption bed 210 falls from the gap between the flue gas distribution pipes 100, and is discharged from the outlet 222 of the adsorption tower 200, and then sent to the regeneration tower for regeneration of the adsorbent. In the regeneration tower, the adsorbent is heated and regenerated, and the pollutants adsorbed in the adsorbent are desorbed from the adsorbent to form a regeneration gas, which is then subjected to subsequent treatment. The regenerated adsorbent is discharged from the regeneration outlet of the regeneration tower and input into the feed inlet 221 of the adsorption tower 200 as a supplement to the adsorption bed 210 .

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A flue gas distributor, comprising: the flue gas distribution pipes are horizontally arranged, the flue gas distribution pipes are parallel to each other and are arranged at intervals along the first horizontal direction, the flue gas distribution pipes are provided with opposite first ends and second ends in the extending direction, at least one of the first ends and the second ends is opened to form a flue inlet, the flue gas distribution pipes are provided with a plurality of flue gas distribution holes positioned at the upper part of the flue gas distribution pipes, and the interval between every two adjacent flue gas distribution pipes forms a channel for the falling of the adsorbent.

2. The flue gas distributor of claim 1, wherein the pores of the flue gas distribution holes are smaller than the sorbent particle size to prevent the sorbent from falling into the flue gas distribution tube through the flue gas distribution holes.

3. The flue gas distributor according to claim 1 or 2, wherein a lower portion of the flue gas distribution tube is provided with a leakage orifice, the leakage orifice having a smallest dimension larger than the particle size of the adsorbent, the leakage orifice being for letting out the adsorbent entering the flue gas distribution tube.

4. A flue gas distributor according to claim 3 wherein the flue gas distribution tube is a grid-like tube, the mesh holes in the upper portion of the flue gas distribution tube are the flue gas distribution holes, and the mesh holes in the lower portion of the flue gas distribution tube are the weep holes.

5. A flue gas distributor according to claim 3 wherein the flue gas distributor tube is open at the bottom to form an elongated discharge opening extending in the same direction as the flue gas distributor tube.

6. The flue gas distributor according to claim 5, wherein the flue gas distribution pipe is a circular pipe, and the central angle corresponding to the material leakage opening is 10-30 degrees.

7. The flue gas distributor according to claim 1, wherein the height of the flue gas distributor in the vertical direction is 80mm-300mm;

and/or the interval between two adjacent flue gas distribution pipes is 50-80mm.

8. An adsorption tower, comprising:

the tower body is internally provided with a movable adsorption bed, the top of the tower body is provided with a feed inlet, the bottom of the tower body is provided with a discharge outlet, the side wall of the tower body is provided with a flue gas inlet and a flue gas outlet, and the flue gas outlet is positioned above the adsorption bed;

a flue gas distributor, wherein the flue gas distributor is a flue gas distributor according to any one of claims 1-7, the flue gas distributor is arranged in the tower body and is positioned below the adsorption bed, a flue gas inlet of the flue gas distributor is communicated with the flue gas inlet, and the adsorbent in the adsorption bed falls from the interval between two adjacent flue gas distribution pipes and is discharged from the discharge port out of the tower body.

9. The adsorption column of claim 8, wherein the flue gas inlet comprises a first flue gas inlet and a second flue gas inlet, the first end of the flue gas distribution tube has a first flue gas inlet, the second end of the flue gas distribution tube has a second flue gas inlet, the first flue gas inlet is in communication with the first flue gas inlet, and the second flue gas inlet is in communication with the second flue gas inlet; and/or the height of the adsorption tower in the vertical direction is 3.0m-6.0m.

10. A low temperature flue gas adsorption system, comprising:

the flue gas cooling device is used for cooling the flue gas to room temperature or below;

an adsorption tower, wherein the adsorption tower is the adsorption tower according to claim 8 or 9, and a smoke outlet of the smoke cooling device is communicated with a smoke inlet of the adsorption tower;

the regeneration tower is used for regenerating the adsorbent, the discharge port of the adsorption tower is communicated with the regeneration inlet of the regeneration tower, and the regeneration outlet of the regeneration tower is communicated with the feed inlet of the adsorption tower.

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