CN216537699U - Moving bed adsorption tower and flue gas purification system - Google Patents
Moving bed adsorption tower and flue gas purification system Download PDFInfo
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- CN216537699U CN216537699U CN202122237764.0U CN202122237764U CN216537699U CN 216537699 U CN216537699 U CN 216537699U CN 202122237764 U CN202122237764 U CN 202122237764U CN 216537699 U CN216537699 U CN 216537699U
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Abstract
The utility model discloses a moving bed adsorption tower and a flue gas purification system, which comprise a tower body and a sieve hopper, wherein a cavity is arranged in the tower body, the tower body is provided with a feed inlet, a discharge outlet, a flue gas inlet and a flue gas outlet which are communicated with the cavity, the cavity is provided with an air inlet section, a filler section and an air outlet section in the circulation direction of flue gas, the flue gas inlet is communicated with the air inlet section, the flue gas outlet is communicated with the air outlet section, the feed inlet and the flue gas outlet are positioned above the filler section, and the discharge outlet and the flue gas inlet are positioned below the filler section; the sieve fill is established in the tower body, and the sieve fill is located the below of filler section, and the sieve fill is the funnel type, and the lateral wall of sieve fill is equipped with a plurality of sieve meshes, and the size of sieve mesh is less than the size of adsorbent, and the bottom of sieve fill is equipped with the blanking mouth, and the blanking mouth is located the top of discharge gate. The utility model has the advantages of uniform adsorption and high adsorption efficiency.
Description
Technical Field
The application relates to the technical field of flue gas treatment, in particular to a moving bed adsorption tower and a flue gas purification system.
Background
The generation of a large amount of pollutants from coal-fired flue gas is one of the important factors harming the atmospheric environment and human health. The fixed bed adsorption tower is usually adopted in the flue gas purification field to adsorb the purpose in order to realize purifying flue gas in the pollutant in the flue gas, but the fixed bed adsorption tower among the correlation technique ubiquitous filler layer pressure and density when using problem that absorption is inhomogeneous, adsorption effect is poor, adsorption efficiency reduces along with the live time extension, need stop work when needing to change the adsorbent in addition, seriously influences adsorption efficiency, has improved the operation degree of difficulty.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides a moving bed adsorption tower which has the advantages of uniform adsorption and high adsorption efficiency.
The embodiment of the utility model also provides a flue gas purification system comprising the moving bed adsorption tower,
a moving bed adsorption tower according to an embodiment of the present invention includes: the tower body is internally provided with a cavity, the tower body is provided with a feed inlet, a discharge outlet, a flue gas inlet and a flue gas outlet which are communicated with the cavity, the cavity is provided with an air inlet section, a filler section and an air outlet section in the circulation direction of flue gas, the filler section is used for filling an adsorbent, the flue gas inlet is communicated with the air inlet section, the flue gas outlet is communicated with the air outlet section, the feed inlet and the flue gas outlet are positioned above the filler section, and the discharge outlet and the flue gas inlet are positioned below the filler section; the sieve fill, the sieve fill is established in the tower body, the sieve fill is located the below of filler section so that the adsorbent in the filler section falls into in the sieve fill, the sieve fill is the funnel type, just the lateral wall of sieve fill is equipped with a plurality of sieve meshes, the size of sieve mesh is less than the size of adsorbent is in order to avoid the adsorbent is followed the sieve mesh flows out, the bottom of sieve fill is equipped with the blanking mouth, the blanking mouth is located the top of discharge gate.
The moving bed adsorption tower provided by the embodiment of the utility model has the advantages of uniform adsorption and high adsorption efficiency.
In some embodiments, the sieve hopper is a plurality of sieve hoppers arranged in a horizontal direction.
In some embodiments, the feed opening is arranged at the top end of the tower body, the number of the feed openings is several, the number of the sieve hoppers is several, and the number of the feed openings and the number of the sieve hoppers are arranged in one-to-one correspondence in the vertical direction.
In some embodiments, the sieve hopper comprises a sieve hopper body and a blanking pipe, the sieve holes are arranged on the side wall of the sieve hopper body, the top end of the blanking pipe is connected with the bottom end of the sieve hopper body, the blanking port is arranged at the bottom end of the blanking pipe, and the flue gas inlet is vertically located between the sieve holes and the blanking port.
In some embodiments, the sieve hopper has a height of 1.0m to 2.0 m.
In some embodiments, the height of the sieve hopper body is 0.5m to 1.0m, and the height of the blanking pipe is 0.5m to 1.0 m.
In some embodiments, the side wall of the screen bucket body is a grid, and the grid comprises a plurality of annular grid bars arranged along the circumferential direction of the screen bucket.
In some embodiments, the spacing between adjacent annular bars is between 2cm and 8 cm.
In some embodiments, the cavity further comprises a discharge section located below the gas outlet section, the discharge section is in an inverted cone shape, and the discharge port is communicated with the bottom of the discharge section.
In some embodiments, the discharge section has a height of 1.0m to 3.0 m.
In some embodiments, the moving bed adsorption column has a height of 4.0m to 8.0 m.
In some embodiments, the height of the gas inlet section is 1.0m to 2.0m, the height of the packing section is 2.0m to 3.0m, and the height of the gas outlet section is 0.5m to 1 m.
In some embodiments, the moving bed adsorption column has a space velocity of 600h-1-1500h-1。
In some embodiments, the centre of the flue gas outlet is vertically spaced from the top end of the packing section by a distance of 0.1m to 0.7 m.
In addition, the flue gas cleaning system according to the utility model comprises: the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet and is used for cooling the flue gas entering from the flue gas inlet to room temperature or below; the flue gas cooling device comprises a flue gas outlet, a flue gas outlet and a moving bed adsorption tower, wherein the moving bed adsorption tower comprises the moving bed adsorption tower in any embodiment, the flue gas outlet of the flue gas cooling device is communicated with the flue gas outlet of the moving bed adsorption tower, and the moving bed adsorption tower is used for adsorbing the flue gas.
Drawings
Fig. 1 is a front view of a moving bed adsorption column according to an embodiment of the present invention.
Fig. 2 is a top view of a moving bed adsorption column according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view at a-a in fig. 2.
Fig. 4 is a top view of a sieve hopper according to another embodiment of the utility model.
Reference numerals:
a tower body 1; an air outlet section 11; a feed port 111; a flue gas outlet 112; a filler section 12; an air intake section 13; a flue gas inlet 131; a discharge section 14; a discharge port 141;
a sieve hopper 2; a sieve bucket body 21; a down pipe 22; a drop opening 23.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1 to 3, a moving bed adsorption tower (hereinafter, referred to as an adsorption tower) according to an embodiment of the present invention includes a tower body 1 and a sieve hopper 2.
The tower body 1 is internally provided with a cavity, the tower body 1 is provided with a feed inlet 111, a discharge outlet 141, a flue gas inlet 131 and a flue gas outlet 112 which are communicated with the cavity, the cavity is provided with an air inlet section 13, a packing section 12 and an air outlet section 11 in the circulation direction of flue gas, the packing section 12 is used for packing adsorbents, the flue gas inlet 131 is communicated with the air inlet section 13, the flue gas outlet 112 is communicated with the air outlet section 11, the feed inlet 111 and the flue gas outlet 112 are positioned above the packing section 12, and the discharge outlet 141 and the flue gas inlet 131 are positioned below the packing section 12;
specifically, the tower body 1 is in the shape of a combination of a rectangular prism and a rectangular pyramid, the plurality of feed inlets 111 are provided, the feed inlets 111 are positioned at the top end of the tower body 1, the plurality of discharge outlets 141 are provided, the discharge outlets 141 are positioned at the upper half parts of the front and rear sides of the tower body 1, the outer edges of the discharge outlets 141 are close to the top end of the tower body 1, the flue gas inlets 131 are positioned at the lower half part of the front end of the tower body 1, and the discharge outlets 141 are positioned at the lower end of the tower body 1.
In addition, the flowing direction of the flue gas is the direction from the flue gas inlet 131 to the flue gas outlet 112. The air outlet section 11, the filler section 12, the air inlet section 13 and the material outlet section 14 are sequentially arranged from top to bottom. From this, make the flue gas follow tower body 1's lower half entering tower body 1's inside and flow from tower body 1's upside, the adsorbent gets into tower body 1 and flows from tower body 1's lower extreme from tower body 1's upside, the flow direction of flue gas is opposite with the flow direction of adsorbent, the concentration of nitrogen and sulphur reduces along with the flue gas rises gradually in the flue gas, the adsorption effect of adsorbent reduces along with the time with the flue gas contact gradually, the adsorbent contact of the better adsorption effect of flue gas of lower nitrogen and sulphur concentration, can effectively reduce the concentration of nitrogen and sulphur in the exhaust gas, and the adsorption efficiency is improved.
Sieve fill 2 establishes in tower body 1, and sieve fill 2 is located the below of filler section 12 so that the adsorbent in filler section 12 falls into sieve fill 2 in, and sieve fill 2 is the funnel type, and the lateral wall of sieve fill 2 is equipped with a plurality of sieve meshes, and the size of sieve mesh is less than the size of adsorbent in order to avoid the adsorbent to flow from the sieve mesh, and the bottom of sieve fill 2 is equipped with blanking mouth 23, and blanking mouth 23 is located the top of discharge gate 141.
Specifically, sieve fill 2 has a plurality ofly, and the opening of sieve fill 2 is up, and the upper end of sieve fill 2 is the feed end, and the lower extreme of sieve fill 2 is the discharge end. Therefore, the adsorbent particles enter the sieve bucket body 21 from the upper end of the sieve bucket 2 and move downwards along the side surface of the sieve bucket 2 until flowing out of the sieve bucket 2, and the time for contacting the flue gas with the adsorbent can be increased while the adsorbent is collected. The size of the sieve pores is the diameter of the inscribed circle of the sieve pores, the adsorbent is solid particles, and the size of the adsorbent is the diameter of the circumscribed sphere of the adsorbent particles. From this, the adsorbent can not pass the sieve mesh and fall the downside of sieve fill 2 when moving down along the side of sieve fill 2, can roll down along the side of sieve fill 2 and flow out sieve fill 2 from the discharge end of sieve fill 2, has increased the rate of recovery of adsorbent, has reduced the loss of adsorbent.
In other embodiments, the shape of the mesh may be circular, rectangular, polygonal, etc.
In some embodiments, the sieve bucket 2 is plural, and the plural sieve buckets 2 are arranged in a horizontal direction.
Specifically, sieve fill 2 has two, and sieve fill 2 arranges side by side, makes the gaseous distribution more even in the tower body 1, and the perpendicular blanking rate of absorbent granule is more even in the tower body 1. The upper end surface of the sieve bucket 2 completely covers the cross section of the inner cavity of the tower body 1. Therefore, all the adsorbents in the filler section 12 can be recovered through the sieve hopper 2, and the surface of the adsorbents can be swept by flue gas when the flue gas flows upwards in the filler section 12, so that the contact probability of flue gas molecules and the adsorbents is improved, and the adsorption efficiency is improved.
In some embodiments, the feeding port 111 is disposed at the top end of the tower body 1, the number of the feeding ports 111 is several, the number of the sieve hoppers 2 is several, and the number of the feeding ports 111 and the number of the sieve hoppers 2 are disposed in one-to-one correspondence in the vertical direction.
Specifically, there are two feed ports 111 and two sieve hoppers 2, and the position of the feed port 111 is directly above the center of its corresponding sieve hopper 2. From this, guarantee that the adsorbent can smooth motion from charge door 111 to blanking mouth 23, avoid having the dead angle when the adsorbent moves, improved the efficiency that the adsorbent was retrieved to improve adsorption efficiency.
In some embodiments, the sieve hopper 2 includes a hopper body 21 and a blanking pipe 22, the side wall of the hopper body 21 is provided with sieve holes, the top end of the blanking pipe 22 is connected to the bottom end of the hopper body 21, the bottom end of the blanking pipe 22 is provided with a blanking port 23, and the flue gas inlet 131 is located between the sieve holes and the blanking port 23 in the vertical direction.
Specifically, the sieve hopper body 21 is a quadrangular pyramid, the opening of the sieve hopper body 21 is upward, the sieve holes are formed in the side surface of the sieve hopper body 21, the sieve holes are uniformly distributed in the side surface of the sieve hopper body 21, and the cross section of the blanking pipe 22 can be in a shape of a regular quadrangle, a circle, a regular octagon, or the like.
In addition, there are two blanking pipes 22, the blanking pipes 22 are arranged in parallel, and the geometric center of the flue gas inlet 131 is arranged right in front of the midpoint of the connecting line of the geometric centers of the two blanking pipes 22. From this, the adsorbent granule falls into ejection of compact section 14 through blanking pipe 22 after the screening hopper 2 is collected, avoids the adsorbent to follow flue gas import 131 splash tower body 1, has reduced the loss of adsorbent.
In some embodiments, the height of the sieve hopper 2 is 1.0m to 2.0 m. Specifically, the height of the sieve hopper 2 is the vertical distance from the upper end of the sieve hopper 2 to the blanking port 23. The height of the sieve bucket 2 may be any value between 1.0m and 2.0m, for example, the height of the sieve bucket 2 may be 1.1m, 1.6m, 1.9m, 2.0m, etc.
In some embodiments, the height of the hopper body 21 is 0.5m to 1.0m, and the height of the down pipe 22 is 0.5m to 1.0 m. Specifically, the height of the sieve bucket body 21 is the vertical distance from the upper end of the sieve bucket body 21 to the lower end of the sieve bucket body 21. The height of the sieve hopper body 21 may be any value between 0.5m and 1.0m, for example, the height of the sieve hopper 2 may be 0.6m, 0.75m, 0.88m, 0.95m, etc.
In other embodiments, the side wall of the screen body 21 is a grid, and the grid includes a plurality of annular grid bars arranged along the circumferential direction of the screen 2.
Specifically, as shown in fig. 4, the annular bars are regular quadrangles, the annular bars are arranged in parallel, the circumferences of the annular bars are gradually increased along the direction from bottom to top, the geometric centers of the annular bars are overlapped in the vertical direction, the lower end of the grid is provided with a connecting piece, and the sieve hopper 2 is connected with the blanking pipe 22 through the connecting piece. Therefore, sieve holes can be replaced between the annular grids, so that the adsorbent moves along the direction of downward gathering of the annular grids, and the effects of collecting the adsorbent and discharging the adsorbent from the blanking pipe 22 can also be achieved.
In some embodiments, the shape of the annular lattice bars may be rectangular, regular octagonal, circular, or the like.
In some embodiments, the spacing between adjacent annular bars is between 2cm and 8 cm. Specifically, the distance between adjacent annular bars is the distance between the midpoints of the sides of the annular bars in the same direction. The spacing between adjacent annular bars may be any value between 2cm and 8cm, for example, the spacing between adjacent annular bars may be 2.1cm, 3.5cm, 6.0cm, 7.35cm, etc.
In some embodiments, the cavity further includes a discharge section 14 located below the air outlet section 11, the discharge section 14 is in an inverted cone shape, and the discharge port 141 is communicated with the bottom of the discharge section 14.
Specifically, the cavity is the inside space of tower body 1, goes out the material section 14 and is the four pyramid shape of falling, and the top and the section of admitting air 13 of going out material section 14 are connected, and it is hollow structure to go out material section 14, and the inside space of the material section 14 links to each other with the cavity, and the sectional area of the material section 14 of going out reduces along the direction from the top to the bottom gradually, and discharge gate 141 sets up the lower extreme at the material section 14 of going out. From this, the adsorbent falls into ejection of compact section 14 through blanking pipe 22 after accomplishing the absorption to harmful components in the flue gas to collect in ejection of compact section 14, after collecting a certain amount of adsorbent, discharge from discharge gate 141, carry out processing on next step to the adsorbent of retrieving, when discharge gate 141 seals, harmful components that escape in the adsorbent and the flue gas that gets into in the gas inlet 131 upwards flow together, can not volatilize in the atmosphere.
In some embodiments, the discharge section 14 has a height of 1.0m to 3.0 m. Specifically, the height of the discharging section 14 is the distance between the top of the discharging section 14 and the bottom of the discharging section 14 in the vertical direction. The height of the discharge section 14 may be any value between 1.0m and 3.0m, for example, the height of the discharge section 14 may be 1.1m, 2.0m, 2.1m, 2.85m, and the like.
Preferably, the discharge section 14 has a height of 1.8m, so that the material flows smoothly downward.
In some embodiments, the moving bed adsorption column has a height of 4.0m to 8.0 m. Specifically, the height of the moving bed adsorption tower is the distance between the feed port 111 and the discharge port 141 in the vertical direction. The moving bed adsorption column may have any value between 4.0m and 8.0m, for example, the height of the moving bed adsorption column may be 4.1m, 5.02m, 6.15m, 7.8m, etc.
Preferably, the height of the adsorption tower of the moving bed is 6.02m, and the arrangement fully considers the height of a material layer and the occupied space.
In some embodiments, the height of gas inlet section 13 is 1.0m to 2.0m, the height of filler section 12 is 2.0m to 3.0m, and the height of gas outlet section 11 is 0.5m to 1 m.
Specifically, the height of the air inlet section 13 is greater than that of the sieve hopper 2, the height of the packing section 12 is greater than the sum of the air inlet section 13 and the air outlet section 11, for example, the height of the air inlet section 13 is 1.5m, the height of the air outlet section 11 is 0.6m, and the height of the packing section 12 is 2.5m, so that the time for which the adsorbent stays in the packing section 12 is greater than the sum of the time for which the adsorbent stays in the air inlet section 13 and the time for which the adsorbent stays in the air outlet section 11, and the time for which the adsorbent adsorbs the flue gas is increased, thereby improving the adsorption efficiency.
Preferably, the height of the air inlet section 13 is 1.45m, the height of the filling section 12 is 2.05m, and the height of the material distribution section 11 is 0.7m, so that the material can be distributed on the material distribution plate 21.
In some embodiments, the space velocity of the moving bed adsorption column is 600h-1-1500h-1. Specifically, the space velocity refers to the ratio of the flue gas flow rate of the moving bed adsorption tower to the packing volume of the adsorbent in the moving bed adsorption tower. Therefore, the airspeed of the moving bed adsorption tower is higher, the filling volume of the moving bed adsorption tower can be smaller than that of the existing moving bed adsorption tower under the same flue gas flow, the volume of the moving bed adsorption tower can be reduced, and the filling amount of the adsorbent in the tower can also be reduced.
Preferably, the space velocity of the adsorption tower of the moving bed is 600h-1-800h-1The adsorption effect of the moving bed adsorption tower is optimized.
In some embodiments, the center of the flue gas outlet 112 is vertically spaced from the top end of the packing section 12 by a distance of 0.1m to 0.7 m.
Specifically, an air extracting device is arranged at the front end of the smoke outlet 112, and when the air extracting device works, the treated smoke can be extracted from the smoke outlet 112, and when the center of the smoke outlet 112 keeps a certain distance from the top end of the filler section 12, the air extracting device can be prevented from directly extracting the smoke at the feeding port 111, so that the air extracting device can fully extract the smoke in the filler section 12.
In addition, the flue gas cleaning system according to the utility model comprises: the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet, and the flue gas cooling device is used for cooling the flue gas entering from the flue gas inlet to the room temperature or below. The moving bed adsorption tower comprises any one of the moving bed adsorption towers, the smoke outlet of the smoke cooling device is communicated with the smoke outlet 112 of the moving bed adsorption tower, and the moving bed adsorption tower is used for adsorbing smoke.
Optionally, the temperature of the flue gas entering the flue gas inlet 131 is between-100 ℃ and room temperature (e.g., room temperature is 25 ℃). Alternatively, the adsorbent is activated coke (carbon).
The flue gas purification system that this embodiment provided adopts the low temperature adsorption's mode when adsorbing the flue gas, utilizes the dissolution characteristic and the adsorption characteristic of pollutant component at low temperature in the flue gas to carry out deviating from of pollutant, can realize SOx/NOx control simultaneously. The sulfur dioxide in the flue gas is mainly subjected to physical adsorption, the desorption temperature is low, the loss of the adsorbent is low, the supplement amount of the adsorbent is low, and the operation cost is reduced. In addition, the flue gas purification system for adsorbing at low temperature has large pollutant adsorption capacity, small adsorbent filling amount and small occupied area of equipment such as a moving bed adsorption tower and the like.
It should be noted that, when the flue gas purification system provided in this embodiment performs adsorption purification on flue gas, the NO component that is difficult to remove in flue gas is oxidized into NO by using a low-temperature oxidation adsorption mechanism2Adsorption removal without spraying NH3The catalytic reduction is carried out, and the operation cost is low. The flue gas purification system provided by the embodiment can be used for purifying NO in flue gasxThe adsorption ratio is more than 99%, and the denitration efficiency is obviously superior to 70-80% in the prior art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
1. A moving bed adsorption column, comprising:
the tower body is provided with a cavity, the tower body is provided with a feed inlet, a discharge outlet, a flue gas inlet and a flue gas outlet which are communicated with the cavity, the cavity is provided with a gas inlet section, a filler section and a gas outlet section in the flowing direction of flue gas, and the filler section is used for filling an adsorbent;
the sieve fill, the sieve fill is established in the tower body, the sieve fill is located the below of filler section so that the adsorbent in the filler section falls into in the sieve fill, the sieve fill is the funnel type, just the lateral wall of sieve fill is equipped with a plurality of sieve meshes, the size of sieve mesh is less than the size of adsorbent is in order to avoid the adsorbent is followed the sieve mesh flows out, the bottom of sieve fill is equipped with the blanking mouth, the blanking mouth is located the top of discharge gate.
2. The moving bed adsorption column according to claim 1, wherein the sieve hopper is provided in plurality, and the plurality of sieve hoppers are arranged in a horizontal direction.
3. A moving bed adsorption tower according to claim 1 or 2, wherein the feed port is provided at a top end of the tower body, the number of feed ports is plural, the number of sieve hoppers is plural, and the plurality of feed ports and the plurality of sieve hoppers are provided in one-to-one correspondence in a vertical direction.
4. The moving bed adsorption tower of claim 1, wherein the sieve hopper comprises a hopper body and a blanking pipe, the sieve holes are formed in the side wall of the hopper body, the top end of the blanking pipe is connected with the bottom end of the hopper body, the blanking port is formed in the bottom end of the blanking pipe, and the flue gas inlet is vertically located between the sieve holes and the blanking port.
5. A moving bed adsorption column according to claim 1 or 4, wherein the height of the sieve hopper is 1.0m to 2.0 m.
6. The moving bed adsorption tower of claim 4, wherein the height of the sieve hopper body is 0.5m to 1.0m, and the height of the down pipe is 0.5m to 1.0 m.
7. The moving bed adsorption tower of claim 4, wherein the side walls of the sieve hopper body are grates, and the grates comprise a plurality of annular grate bars arranged along the circumference of the sieve hopper.
8. The moving bed adsorption column according to claim 7, wherein the spacing between adjacent annular bars is 2cm to 8 cm.
9. The moving bed adsorption tower according to claim 1, wherein the cavity further comprises a discharge section located below the gas outlet section, the discharge section is in an inverted cone shape, and the discharge port is communicated with the bottom of the discharge section.
10. The moving bed adsorption column according to claim 9, wherein the discharge section has a height of 1.0m to 3.0 m.
11. The moving bed adsorption column according to claim 1, wherein the moving bed adsorption column has a height of 4.0m to 8.0 m.
12. A moving bed adsorption column according to claim 1 or 11, wherein the height of the gas inlet section is 1.0m to 2.0m, the height of the packing section is 2.0m to 3.0m, and the height of the gas outlet section is 0.5m to 1 m.
13. Moving bed adsorption column according to claim 1 or 11, wherein the space velocity of the moving bed adsorption column is 600h-1-1500h-1。
14. The moving bed adsorption column according to claim 1, wherein the center of the flue gas outlet is vertically spaced from the top end of the packed section by a distance of 0.1m to 0.7 m.
15. A flue gas purification system, comprising:
the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet and is used for cooling the flue gas entering from the flue gas inlet to room temperature or below;
the moving bed adsorption tower is according to any one of claims 1-14, a smoke outlet of the smoke cooling device is communicated with the smoke outlet of the moving bed adsorption tower, and the moving bed adsorption tower is used for adsorbing the smoke.
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| WO2023029780A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Moving bed adsorption tower and flue gas purification system |
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| WO2023029780A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Moving bed adsorption tower and flue gas purification system |
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