CN113828110A - Moving bed adsorption tower and flue gas purification system with same - Google Patents
Moving bed adsorption tower and flue gas purification system with same Download PDFInfo
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- CN113828110A CN113828110A CN202111082803.2A CN202111082803A CN113828110A CN 113828110 A CN113828110 A CN 113828110A CN 202111082803 A CN202111082803 A CN 202111082803A CN 113828110 A CN113828110 A CN 113828110A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
- B01D53/08—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds according to the "moving bed" method
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Abstract
The invention discloses a moving bed adsorption tower and a flue gas purification system with the same, wherein the moving bed adsorption tower comprises a tower body and a distributor, 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 a material distribution section in the flowing direction of flue gas, and the filler section is used for filling an adsorbent; the distributor is arranged in the tower body and provided with a plurality of blanking ports which are arranged at intervals, the distributor is located below the filler section so that the adsorbent in the filler section flows out through the blanking ports, the plurality of blanking ports comprise a first part and a second part, the blanking ports in the first part are arranged around the blanking ports in the second part, and the average sectional area of the blanking ports in the first part is larger than that of the blanking ports in the second part. The invention has the advantages of uniform adsorption and good adsorption effect.
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 with the same.
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.
Disclosure of Invention
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 invention provides a moving bed adsorption tower with uniform blanking.
The embodiment of the invention also provides a flue gas purification system comprising the moving bed adsorption tower.
The moving bed adsorption tower comprises a tower body, wherein a cavity is formed in the tower body, the tower body is provided with a feeding port, a discharging port, 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 filling section and a material distribution section in the circulation direction of flue gas, and the filling section is used for filling an adsorbent; the distributor is arranged in the tower body and provided with a plurality of blanking ports arranged at intervals, the distributor is located below the packing section so that the adsorbent in the packing section can flow out of the blanking ports, the blanking ports comprise a first part and a second part, the blanking ports in the first part surround the blanking ports in the second part, and the average sectional area of the blanking ports in the first part is larger than that of the blanking ports in the second part.
The moving bed adsorption tower provided by the embodiment of the invention has the advantages of uniform blanking speed and uniform adsorption effect.
In some embodiments, the cross-sectional area of the plurality of blanking ports increases from inside to outside.
In some embodiments, the distributor includes a distribution plate, the blanking opening is disposed on the distribution plate, the distribution plate is connected to the peripheral wall of the cavity, the flue gas inlet is located below the distribution plate, the distribution plate has a center line extending in the vertical direction, and the farther from the center line, the larger the cross-sectional area of the blanking opening.
In some embodiments, the plurality of blanking ports are arranged in multiple rows, each row of blanking ports includes a plurality of blanking ports, the plurality of blanking ports in each row of blanking ports are arranged at intervals along a first direction, the plurality of rows of blanking ports are arranged at intervals along a second direction, the first direction and the second direction are perpendicular to each other, and two adjacent rows of blanking ports are aligned along the second direction.
In some embodiments, the blanking opening is circular or square in cross-section.
In some embodiments, the interval between two adjacent blanking openings in the first direction is 20mm to 100mm, and the interval between two adjacent blanking openings in the second direction is 20mm to 100 mm.
In some embodiments, the moving bed adsorption tower further comprises a plurality of blanking pipes, the plurality of blanking pipes correspond to the plurality of blanking ports in a one-to-one manner, the blanking pipes are located below the distribution plate and have a space with the distribution plate so that flue gas can flow, and the blanking pipes are located above the discharge ports. .
In some embodiments, a gap between a top end of the down pipe and a lower end surface of the distribution plate is 20mm to 100mm in a vertical direction.
In some embodiments, the moving bed adsorption tower further includes a distributor, the distributor is disposed in the tower body, the distributor includes a plurality of distribution inlets and a plurality of distribution outlets corresponding to the distribution inlets, the distributor is located below the charging opening and above the packing section so as to distribute the adsorbent entering from the charging opening to the packing section, and the flue gas outlet is located below the distribution inlets and above the distribution outlets. .
The flue gas purification system comprises a flue gas cooling device, wherein 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 moving bed adsorption tower, the moving bed adsorption tower is the moving bed adsorption tower according to any one of the embodiments, a 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 sectional view at B-B in fig. 3.
Fig. 5 is a cross-sectional view at B-B in fig. 3 of another embodiment.
Fig. 6 is a front view of the distributor of fig. 3.
Fig. 7 is a front view of another embodiment of the distributor of fig. 3.
Fig. 8 is a cross-sectional view at a-a in fig. 2 of another embodiment.
Reference numerals:
a tower body 1; a material distribution section 11; a feed port 111; a filler section 12; a flue gas outlet 121; an air intake section 13; a flue gas inlet 131; a discharge section 14; a discharge port 141;
a distributor 2; a distribution plate 21; a blanking port 22; the distribution pipe 23;
a blanking pipe 3;
a distributing device 4; a cloth inlet 41; a cloth outlet 42.
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 invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 3, a moving bed adsorption tower according to an embodiment of the present invention includes a tower body 1 and a distributor 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 121 which are communicated with the cavity, the cavity is provided with an air inlet section 13, a filler section 12 and a material distribution section 11 in the circulation direction of flue gas, and the filler section 12 is used for filling an adsorbent.
Specifically, the flue gas inlet 131 is communicated with the gas inlet section 13, the flue gas outlet 121 is communicated with the material distribution section 11, the charging opening 111 and the flue gas outlet 121 are located above the filling section 12, and the discharge opening 141 and the flue gas inlet 131 are located below the filling section 12. It should be noted that the smoke flowing direction is from the smoke inlet 131 to the smoke outlet 121, and the distributing section 11, the filling section 12 and the air inlet section 13 are sequentially arranged along the direction from top to bottom. From this, the flue gas gets into the inside of tower body 1 and flows from the upside of tower body 1 from the lower half of tower body 1, the adsorbent gets into tower body 1 and flows from the lower extreme of tower body 1 from the upside of tower body 1, 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 gas outlet 121 exhaust gas, and the adsorption efficiency is improved.
The distributor 2 is arranged in the tower body 1, the distributor 2 is provided with a plurality of blanking ports 22 which are arranged at intervals, the distributor 2 is positioned below the packing section 12 so that the adsorbent in the packing section 12 flows out through the blanking ports 22, the plurality of blanking ports 22 comprise a first part and a second part, the blanking ports 22 in the first part are arranged around the blanking ports 22 in the second part, and the average sectional area of the blanking ports 22 in the first part is larger than that of the blanking ports 22 in the second part.
Specifically, as shown in fig. 4, the blanking opening 22 is square, so that the space utilization rate of the blanking opening 22 in the horizontal direction is improved, and the blanking efficiency is improved. The blanking port 22 is a through hole on the distributor 2, the first part is close to the horizontal center of the distributor 2, and the second part is arranged around the first part, so that the blanking efficiency at the edge of the distributor 2 can be improved, adsorbent particles can uniformly fall from the distributor 2, and the conditions of large central flow and small edge flow are avoided. The distances between the geometric centers of adjacent blanking openings 22 are equal. The moving bed adsorption tower provided by the embodiment of the invention has the advantage of uniform blanking speed, and the uniform blanking speed means that the flow rate of the adsorbent in the adsorption tower is uniform, and the uniform flow rate of the adsorbent is favorable for uniform adsorption effect of flue gas. Therefore, the moving bed adsorption tower provided by the embodiment of the invention also has the advantage of uniform adsorption effect.
In other embodiments, the drop opening 22 may be circular.
In some embodiments, the plurality of blanking ports 22 increase in cross-sectional area from the inside to the outside.
Specifically, blanking mouth 22 evenly arranges on distributor 2, and the blanking mouth 22 sectional area that is close to 2 central points of distributor is less, and the blanking mouth 22 sectional area that is close to 2 borders of distributor is great, sets up like this and can improve the efficiency of 2 edges of distributor blanking, reduces the efficiency of 2 center departments of distributor blanking, makes adsorbent granule evenly fall down from distributor 2, has avoided the condition that central flow is big, marginal flow is little.
In some embodiments, as shown in fig. 6, the distributor 2 includes a distribution plate 21, the blanking opening 22 is disposed on the distribution plate 21, the distribution plate 21 is connected to the peripheral wall of the cavity, the flue gas inlet 131 is located below the distribution plate 21, the distribution plate 21 has a center line extending in the vertical direction, and the farther from the center line, the larger the cross-sectional area of the blanking opening 22 is.
Specifically, the lower end of the distribution plate 21 is higher than the upper end of the flue gas inlet 131, and the flue gas inlet 131 is completely located below the distribution plate 21, so that all flue gas can pass through the blanking port 22, the contact time between the flue gas and the adsorbent particles is prolonged, and the adsorption efficiency is improved.
In some embodiments, the plurality of blanking openings 22 are arranged in multiple rows, each row of blanking openings 22 includes a plurality of blanking openings 22, the plurality of blanking openings 22 in each row of blanking openings 22 are spaced apart along a first direction, the plurality of rows of blanking openings 22 are spaced apart along a second direction, the first direction and the second direction are perpendicular to each other, and two adjacent rows of blanking openings 22 are aligned along the second direction.
Specifically, the distribution plate 21 is a porous flat plate, the blanking ports 22 are through holes on the distribution plate 21, the distribution plate 21 is horizontally arranged, the geometric center distances of two adjacent rows of the blanking ports 22 are the same, and the geometric center distances of two adjacent blanking ports 22 in each row of the blanking ports 22 are the same. Therefore, the distribution plate 21 is horizontally arranged to ensure that the adsorbent is uniformly accumulated above the distribution plate 21, the uniformly arranged blanking port 22 ensures uniform blanking so as to improve blanking efficiency, the distribution plate 21 is rectangular, the length of the distribution plate 21 is 1000mm-3000mm, the width of the distribution plate 21 is 500mm-1500mm, the first direction is the length direction of the distribution plate 21, and the second direction is the width direction of the distribution plate 21. As shown in fig. 4, the first direction is a left-right direction, and the second direction is a front-back direction.
In some embodiments, the drop opening 22 is circular or square in cross-section.
Specifically, as shown in fig. 5, the section of the blanking opening 22 is circular, and the diameter of the blanking opening 22 is 100mm to 300 mm. Therefore, on one hand, enough blanking openings 22 are formed in the distribution plate 21, so that blanking is more uniform, and on the other hand, the diameters of the blanking openings 22 are within the range, so that the adsorbent particles can fall smoothly.
In other embodiments, as shown in FIG. 4, the material drop 22 is square in cross-section, and the material drop 22 has sides of 150mm to 300 mm. Therefore, on one hand, enough blanking openings 22 are formed in the distribution plate 21, so that blanking is more uniform, and on the other hand, the side length of each blanking opening 22 is within the range, so that the adsorbent particles can smoothly pass through the blanking openings 22.
In some embodiments, the spacing between two adjacent blanking openings 22 in the first direction is 20mm to 100mm, and the spacing between two adjacent blanking openings 22 in the second direction is 20mm to 100 mm.
Specifically, the distance between two adjacent blanking ports 22 is the distance between the nearest two points of the two adjacent blanking ports 22. The interval between two adjacent blanking openings 22 can be any value between 20mm and 100mm, for example, the interval between two adjacent blanking openings 22 can be 25mm, 30.7mm, 70mm, 86.85m, etc. It should be noted that the interval between two adjacent blanking ports 22 in the first direction may be the same as or different from the interval between two adjacent blanking ports 22 in the second direction.
In some embodiments, the moving bed adsorption tower further comprises a plurality of blanking pipes 3, the plurality of blanking pipes 3 correspond to the plurality of blanking ports 22 one by one, the blanking pipes 3 are located below the distribution plate 21 and have a space with the distribution plate 21 for flowing of flue gas, and the blanking pipes 3 are located above the discharge ports 141.
Specifically, the geometric center of the blanking port 22 in the horizontal direction is the same as the geometric center of the blanking pipe 3 in the horizontal direction, the upper end of the blanking pipe 3 is spaced from the lower end of the distributor 2, and the upper edge of the flue gas inlet 131 is located below the blanking port 22 to ensure that the flue gas inlet 131 is completely located below the blanking port 22. From this, the flue gas gets into tower body 1 back from flue gas inlet 131, and in the interval entering filler section 12 between blanking pipe 3 and blanking mouth 22, the path that gets into the seasoning section at the flue gas is shorter more smooth-going, and the pressure drop that causes because energy loss when the flue gas flows is low, has improved the smooth degree that the flue gas flows at filler section 12 to adsorption effect has been improved.
In other embodiments, as shown in fig. 7, the distributor 2 includes a distribution plate 21 and a plurality of distribution pipes 23, the distribution pipes 23 are connected to the lower end surface of the distribution plate 21 and extend downward from the distribution plate 21, the distribution pipes 23 are square pipes, the plurality of distribution pipes 23 correspond to the plurality of blanking ports 22 one by one, and the plurality of blanking pipes 3 correspond to the plurality of distribution pipes 23 one by one.
In particular, as shown in fig. 8, the lower end of the distribution pipe 23 extends into the upper end of the corresponding down pipe 3 with a space between the distribution pipe 23 and the corresponding down pipe 3. Therefore, when the adsorbent passes through the distribution pipe 23 and falls into the blanking pipe 3, the adsorbent can completely fall into the blanking pipe 3, the adsorbent is prevented from splashing out of a gap between the blanking outlet 24 and the blanking pipe 3, and the adsorbent is prevented from flowing out of the tower body 1 from the smoke inlet 131.
In some embodiments, the gap between the top end of the down pipe 3 and the lower end surface of the distribution plate 21 has a dimension in the vertical direction of 20mm-100 m. Specifically, the size of the gap between the down pipe 3 and the distribution plate 21 in the vertical direction may be any value between 20mm and 100 mm. Preferably, the gap between the down pipe 3 and the distribution plate 21 has a dimension of 75mm in the vertical direction, which is beneficial to improve the flow rate of the flue gas passing through the gap between the down pipe 3 and the distribution plate 21.
In some embodiments, the moving bed adsorption tower further comprises a distributor 4, the distributor 4 is disposed in the tower body 1, the distributor 4 comprises a plurality of distribution inlets and a plurality of distribution outlets corresponding to the distribution inlets, the distributor 4 is located below the feed opening 111 and above the packing section 12 so as to distribute the adsorbent entering from the feed opening 111 to the packing section 12, and the flue gas outlet 121 is located below the distribution inlets and above the distribution outlets.
Specifically, the cloth inlets 41 and the cloth outlets 42 correspond to each other one by one, the cloth inlets 41 are located above the cloth outlets 42, the cloth inlets 41 are horizontally arranged at equal intervals, the cross sections of the cloth inlets 41 and the cloth outlets 42 are circular, and a passage is formed between the cloth inlets 41 and the cloth outlets 42 for the adsorbent particles to pass through the distributor 4. From this, distributing device 4 makes the adsorbent granule pile up the upside at distributing device 4 to pass cloth entry 41 and cloth export 42 and fall into packing section 12, can fall into packing section 12 evenly when the adsorbent passes cloth entry 41 and the cloth export 42 of evenly arranging, the even distribution of adsorbent granule makes this moving bed adsorption tower adsorb evenly, has improved the adsorption effect in packing section 12. In addition, the height that the upper edge height of exhanst gas outlet 121 is less than the cloth entry, and the height that the lower edge height of exhanst gas outlet 121 is higher than the cloth exit makes exhanst gas outlet 121 lie in between cloth entry and the cloth exit on vertical direction completely like this, prevents on the one hand that the adsorbent granule from the exhanst gas outlet 121 spill, and on the other hand makes the flue gas absorption more even.
In some embodiments, the cavity further comprises a discharge section 14 located below the material distribution 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 3 after accomplishing the absorption to harmful component 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 component that escapes in the adsorbent and the flue gas that gets into in the gas inlet 131 flow upwards together, can not volatilize in the atmosphere
The flue gas purification system comprises a flue gas cooling device, wherein 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 the room temperature or below; the moving bed adsorption tower is the moving bed adsorption tower according to any one of the embodiments, the smoke outlet of the smoke cooling device is communicated with the smoke outlet 121 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 by this embodiment performs adsorption purification on flue gas, NO that is difficult to be removed from flue gasxThe component is oxidized into NO by 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 invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
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 (10)
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 an air inlet section, a filling section and a material distribution section in the circulation direction of flue gas, and the filling section is used for filling an adsorbent;
the distributor is arranged in the tower body and provided with a plurality of blanking ports arranged at intervals, the distributor is located below the packing section so that the adsorbent in the packing section can flow out of the blanking ports, the blanking ports comprise a first part and a second part, the blanking ports in the first part surround the blanking ports in the second part, and the average sectional area of the blanking ports in the first part is larger than that of the blanking ports in the second part.
2. The moving bed adsorption column according to claim 1, wherein the cross-sectional area of a plurality of said blanking ports increases from the inside to the outside in the order named.
3. A moving bed adsorption tower according to claim 1 or 2, wherein the distributor comprises a distribution plate, the drop opening is provided on the distribution plate, the distribution plate is connected to the peripheral wall of the cavity, the flue gas inlet is located below the distribution plate, the distribution plate has a center line extending in the vertical direction, and the cross-sectional area of the drop opening increases as the distance from the center line increases.
4. A moving bed adsorption tower according to claim 1, wherein a plurality of said blanking ports are arranged in a plurality of rows, each row of blanking ports comprises a plurality of said blanking ports, the plurality of blanking ports in each row of blanking ports are arranged at intervals along a first direction, the plurality of rows of blanking ports are arranged at intervals along a second direction, the first direction and the second direction are perpendicular to each other, and two adjacent rows of blanking ports are aligned along the second direction.
5. A moving bed adsorption column according to claim 1 or 4, wherein the blanking port has a circular or square cross-section.
6. A moving bed adsorption column according to claim 4, wherein the spacing between two blanking ports adjacent in the first direction is 20mm to 100mm, and the spacing between two blanking ports adjacent in the second direction is 20mm to 100 mm.
7. The moving bed adsorption tower of claim 3, further comprising a plurality of down pipes, wherein the plurality of down pipes are in one-to-one correspondence with the plurality of down ports, the down pipes are located below the distribution plate and spaced from the distribution plate for flue gas flow, and the down pipes are located above the discharge ports.
8. The moving bed adsorption tower of claim 7, wherein a gap between a top end of the down pipe and a lower end surface of the distribution plate has a dimension in a vertical direction of 20mm to 100 mm.
9. The moving bed adsorption tower of claim 1, further comprising a distributor disposed in the tower body, wherein the distributor comprises a plurality of distribution inlets and a plurality of distribution outlets corresponding to the distribution inlets, the distributor is disposed below the feed port and above the packing section so as to distribute the adsorbent entering from the feed port to the packing section, and the flue gas outlet is disposed below the distribution inlets and above the distribution outlets.
10. 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 1-9, 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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| PCT/CN2022/078430 WO2023029411A1 (en) | 2021-09-02 | 2022-02-28 | Moving bed adsorption tower and flue gas purification system having same |
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| CN2021110285144 | 2021-09-02 | ||
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029411A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团有限公司 | Moving bed adsorption tower and flue gas purification system having same |
| WO2023029781A1 (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 with distributor and flue gas purification system |
| CN116351207A (en) * | 2023-06-01 | 2023-06-30 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature flue gas adsorption tower with flue gas cooling function and adsorption method |
| CN116651146A (en) * | 2023-05-25 | 2023-08-29 | 合肥中亚环保科技有限公司 | Moving bed adsorption decarburization device and adsorption decarburization method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023029411A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团有限公司 | Moving bed adsorption tower and flue gas purification system having same |
| WO2023029781A1 (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 with distributor and flue gas purification system |
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| CN116651146B (en) * | 2023-05-25 | 2024-01-23 | 合肥中亚环保科技有限公司 | Moving bed adsorption decarburization device and adsorption decarburization method |
| CN116351207A (en) * | 2023-06-01 | 2023-06-30 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature flue gas adsorption tower with flue gas cooling function and adsorption method |
| CN116351207B (en) * | 2023-06-01 | 2023-08-29 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature flue gas adsorption tower with flue gas cooling function and adsorption method |
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