CN112691507A - Circulating fluidized bed waste gas treatment device, system and waste gas treatment method - Google Patents
Circulating fluidized bed waste gas treatment device, system and waste gas treatment method Download PDFInfo
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- 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
- B01D53/10—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 with dispersed adsorbents
- B01D53/12—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 with dispersed adsorbents according to the "fluidised technique"
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Abstract
The invention belongs to the field of waste gas treatment, and relates to a circulating fluidized bed waste gas treatment device, a circulating fluidized bed waste gas treatment system and a waste gas treatment method. The adsorption tower is provided with the fluidization plate, the fluidization plate is obliquely arranged inside the adsorption tower, and the fluidization plate is provided with air holes; the side part of the adsorption tower is provided with a steam lifting pipe, one end of the steam lifting pipe is communicated with the adsorbent inlet, and the other end of the steam lifting pipe is communicated with the adsorbent outlet. According to the invention, the fluidized plate is utilized to enable the adsorbent entering the adsorption tower to be in a flowing state, so that the contact time between the waste gas and the adsorbent is prolonged, and the adsorbent can be dynamically regenerated in real time after entering the steam lifting pipe, so that the utilization efficiency of the adsorbent is fully increased, the poor waste gas treatment effect caused by the use of the adsorbent saturated in adsorption is avoided, and the problem of low waste gas treatment efficiency is solved.
Description
Technical Field
The invention belongs to the field of waste gas treatment, and particularly relates to a circulating fluidized bed waste gas treatment device, a circulating fluidized bed waste gas treatment system and a waste gas treatment method.
Background
The prior waste gas treatment device mainly comprises a vertical adsorption device, a horizontal adsorption device and an annular adsorption device, has the problems of insufficient contact, easy short flow, long time and easy uneven resistance distribution, and adopts a fixed bed structure to cause low efficiency. The adsorption material can not be regenerated in real time, although a fluidized bed structure replaces a fixed bed at present, the fluidized bed process is complex to control, improper operation easily causes the loss of the adsorption material, and the practical application is less.
The invention patent with the patent number CN105233625A and the patent publication number of 2016, 1, 13 discloses a fluidized bed type organic waste gas purification method and a device, which comprises adsorption and desorption steps, wherein the device comprises an adsorption chamber, one side of the adsorption chamber is provided with a waste gas inlet, the other side of the adsorption chamber is provided with a purified tail gas outlet, and an adsorption medium moving from top to bottom is arranged in the adsorption chamber; the desorption chamber is located below the adsorption chamber, the adsorption medium falls into the adsorption chamber, one side of the desorption chamber is provided with a carrier gas inlet, the other side of the desorption chamber is provided with a carrier gas outlet, and a desorption device is further arranged in the desorption chamber. Although the invention has a certain exhaust gas purification effect, the adsorbent falls vertically, so that the contact time with the exhaust gas is too short, and the problem of low exhaust gas treatment efficiency still exists.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem of low waste gas treatment efficiency in the prior art, the invention provides a circulating fluidized bed waste gas treatment device, which utilizes a fluidized plate to enable an adsorbent entering an adsorption tower to be in a flowing state, so that the contact time of waste gas and the adsorbent is prolonged, the adsorbent can be dynamically regenerated in real time after entering a steam lifting pipe, the utilization efficiency of the adsorbent is fully increased, the problem of poor waste gas treatment effect due to the use of the adsorbent saturated in adsorption is avoided, and the problem of low waste gas treatment efficiency is solved.
Furthermore, the invention further provides a circulating fluidized bed waste gas treatment system, and a steam condenser and an oil-water separation tank are added on the basis of the device, so that additional pollutants are avoided, and the circulating fluidized bed waste gas treatment system is green and environment-friendly.
Furthermore, the invention provides the method for treating the waste gas by the circulating fluidized bed waste gas treatment device, which can control the rising flow velocity of the waste gas, fully contact the waste gas with the adsorbent and further improve the treatment efficiency of the waste gas.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention provides a circulating fluidized bed waste gas treatment device, which comprises an adsorption tower, wherein the bottom of the adsorption tower is provided with an air inlet and an adsorbent inlet, the bottom of the adsorption tower is provided with an air outlet and an adsorbent outlet, the circulating fluidized bed waste gas treatment device also comprises a fluidizing plate, the fluidizing plate is obliquely arranged in the adsorption tower, and the fluidizing plate is provided with air holes; the steam lifting pipe is arranged on the side part of the adsorption tower; one end of the steam lifting pipe is communicated with the adsorbent inlet, and the other end of the steam lifting pipe is communicated with the adsorbent outlet.
Preferably, a limiting plate is arranged above the fluidization plate, and the limiting plate is parallel to the fluidization plate; the limiting plate is provided with air holes.
Preferably, the upper end of the fluidization plate is provided with a fluidization plate inlet, and the lower end of the fluidization plate is provided with a fluidization plate outlet.
Preferably, the angle of inclination α of the fluidization plate is 45-60 °, and/or the aperture of the gas inlet is 100-180 μm.
Preferably, the vertical distance between the limiting plate and the fluidization plate is 200-300 mm.
Preferably, the fluidization plate comprises a top fluidization plate and a bottom fluidization plate; the fluidization plate inlet of the top fluidization plate is positioned right below the adsorbent inlet, and the top fluidization plate is provided with a dispersion part which is used for increasing the distribution area of the adsorbent entering the top fluidization plate from the fluidization plate inlet of the top fluidization plate; the fluidization plate outlet of the bottom fluidization plate is communicated with the adsorbent outlet, the bottom fluidization plate is provided with a contraction part, and the contraction part is used for reducing the distribution area of the adsorbent entering the bottom fluidization plate from the fluidization plate inlet of the bottom fluidization plate.
Preferably, the fluidization plates comprise a top fluidization plate and a bottom fluidization plate, between which at least 1 middle fluidization plate is arranged; and the outlet of the fluidization plate of the upper stage of fluidization plate is arranged right above the inlet of the fluidization plate of the lower stage of fluidization plate.
The invention also provides a circulating fluidized bed waste gas treatment system which comprises a circulating fluidized bed waste gas treatment device, a steam condenser and an oil-water separation tank, wherein the circulating fluidized bed waste gas treatment device is the circulating fluidized bed waste gas treatment device, a steam lifting pipe of the circulating fluidized bed waste gas treatment device is communicated with an inlet of the steam condenser, and the oil-water separation tank is communicated with an outlet of the steam condenser.
The invention also provides a method for treating waste gas by using the circulating fluidized bed waste gas treatment device, wherein the waste gas enters the adsorption tower from the gas inlet at the bottom of the adsorption tower, sequentially passes through the fluidization plate from bottom to top and is discharged from the gas outlet at the top of the adsorption tower; the ascending flow velocity of the waste gas is 600-1000 m/h.
Preferably, the adsorption column is charged with a volume V of adsorbent, which is calculated by:
wherein the content of the first and second substances,
v is the volume of the adsorbent put into use in the adsorption column, m3；
Q is the flow rate of exhaust gas per unit time, m3/h；
C0Is the concentration of pollutants in the exhaust gas, mg/m3；
a is the retention time of the adsorbent in the adsorption tower, and a is 0.0005-0.001, h.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the waste gas treatment device of the circulating fluidized bed comprises an adsorption tower and a fluidization plate obliquely arranged in the adsorption tower, waste gas moves from bottom to top, the adsorbent entering the adsorption tower is in a flowing state by utilizing the fluidization plate, the contact time of the waste gas and the adsorbent is prolonged, the adsorbent can be dynamically regenerated in real time after entering a steam lifting pipe, the utilization efficiency of the adsorbent is fully increased, the problem that the waste gas treatment efficiency is low due to the fact that the adsorbent saturated in adsorption is poor is avoided, and the problem that the waste gas treatment efficiency is low is solved.
(2) According to the circulating fluidized bed waste gas treatment device, the fluidization channel is formed between the limiting plate and the fluidization plate, so that the local distribution density of the adsorbent is enhanced, and the absorption efficiency and treatment effect of the adsorbent on waste gas are improved.
(3) The circulating fluidized bed waste gas treatment system can separate and recycle steam, and does not generate additional pollutants subsequently, thereby improving the environmental protection performance of the system.
(4) The invention provides the method for treating the waste gas by the circulating fluidized bed waste gas treatment device, the ascending flow velocity of the waste gas is controlled to be 600-1000m/h, the waste gas can be fully contacted with the adsorbent, and the treatment efficiency of the waste gas is further improved; the invention further controls the using volume of the adsorbent, so that the device achieves the optimal using benefit.
Drawings
FIG. 1 is a schematic view of the structure of an apparatus of the present invention in example 1;
FIG. 2 is a schematic structural view of a steam riser of the present invention;
FIG. 3 is a schematic view of the structure of an apparatus of the present invention in example 2;
FIG. 4 is a schematic top view of the fluidizing plate according to the present invention in example 1;
FIG. 5 is a schematic top view showing the structure of a fluidization plate in example 1 according to the present invention.
In the figure:
100. an adsorption tower;
210. a fluidization plate; 211. a guide section; 212. a fluidization plate outlet; 220. a limiting plate; 230. an adsorbent inlet; 240. an adsorbent outlet;
300. a steam lift pipe; 310. a pipe body; 320. outputting; 321. a steam outlet; 322. a valve II; 330. entering the end; 331. A discharge port of the adsorbent; 332. a valve I; 333. a steam inlet;
400. a steam condenser;
500. an oil-water separation tank; 510. an oil phase storage tank; 520. and (5) a water phase storage tank.
Detailed Description
The invention is described in detail below with reference to the figures and specific exemplary embodiments. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined in the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to be illustrative of the state of the art as developed and the meaning of the present technology and is not intended to limit the scope of the invention or the application and field of application of the invention.
Example 1
The invention relates to a circulating fluidized bed waste gas treatment device, which comprises an adsorption tower 100, a fluidization plate 210 and a steam riser 300. The bottom of the adsorption tower 100 is provided with a gas inlet 110 and an adsorbent inlet 230, and the bottom of the adsorption tower 100 is provided with a gas outlet 120 and an adsorbent outlet 240. The diameter of the adsorption tower 100 is generally 0.6 to 1.2m, and the area of the fluidization plate 210 disposed obliquely corresponds to the inner diameter of the adsorption tower 100. To explain further, when the adsorption tower 100 is circular, the fluidization plate 210 generally takes on an oval shape, and the peripheral side of the fluidization plate 210 is connected to the inner wall of the adsorption tower 100; when the adsorption tower 100 has a rectangular shape, the fluidization plate 210 generally has a rectangular shape, and the peripheral side of the fluidization plate 210 is connected to the inner wall of the adsorption tower 100.
As shown in fig. 1, the fluidization plate 210 is disposed at an inclination angle α of preferably 45 to 60 ° to the inside of the adsorption tower 100. When the inclination angle is too large, the falling speed of the adsorbent is too high, and the target adsorption effect cannot be achieved; when the inclination angle is too small, the falling speed of the adsorbent is slow and the fluidized state is difficult to be formed. The fluidization plate 210 is provided with air holes, and the aperture of the air holes is 100 μm and 180 μm. The fluidization plate 210 can be provided with drainage grooves, so that the adsorbent can be rapidly dispersed along the drainage grooves; a plurality of dispersing protrusions may also be provided on the fluidization plate 210, and when the adsorbent collides with the dispersing protrusions, the adsorbent may move in different directions, thereby generating a dispersing effect. Further, the fluidization plate 210 may be a hard plate with air holes or a stainless steel wire mesh. The upper end of the fluidization plate 210 is provided with a fluidization plate inlet, and the lower end of the fluidization plate 210 is provided with a fluidization plate outlet 212. The fluidization plate outlet 212 is provided with a guide portion 211, the maximum width of the fluidization plate outlet 212 after the guide portion 211 is provided is L, and the distance from the bottom end of the guide portion 211 to the next-stage fluidization plate 210 is H, L: h1.5-4, which can keep the resin in a better fluidized state, and enter the next stage fluidization plate 210.
Further illustrating, the fluidization plate 210 includes a top fluidization plate having a fluidization plate inlet located directly below the sorbent inlet 230 and a bottom fluidization plate provided with a dispersion portion for increasing the distribution area of the sorbent entering the top fluidization plate from the fluidization plate inlet of the top fluidization plate. The dispersing part may be, but not limited to, a flow guide groove structure or a similar structure having a flow guide function, as shown in fig. 4, the fluidization plate 210 of the present embodiment is configured to be rectangular, and the upper surface of the fluidization plate 210 is provided with a flow guide groove and/or a dispersing protrusion, etc. The fluidization plate outlet 212 of the bottom fluidization plate is in communication with the sorbent outlet 240 and the bottom fluidization plate is provided with a constriction for reducing the distribution area of sorbent entering the bottom fluidization plate from the fluidization plate inlet of the bottom fluidization plate so that the sorbent can be discharged from the sorbent outlet 240. As shown in fig. 5, the fluidization plate 210 of the present embodiment is a rectangular plate, and the constriction is configured as a limit baffle or the like, so that the resin dispersion area is gradually reduced, and when the fluidization plate 210 is approximately circular, no additional constriction is needed. Further illustrated, at least 1 fluidization plate 210 is disposed between the top and bottom fluidization plates; and the fluidization plate outlet 212 of the upper stage fluidization plate 210 is disposed directly above the fluidization plate inlet of the lower stage fluidization plate 210. Preferably, a limiting plate 220 is disposed above the fluidization plate 210, the limiting plate 220 is parallel to the fluidization plate 210, and the limiting plate 220 is provided with air holes. The vertical distance between the limiting plate 220 and the fluidizing plate 210 is 200mm and 300mm, so that the adsorbent can move in the fluidizing channel formed between the limiting plate 220 and the fluidizing plate 210, the local distribution density of the adsorbent is further enhanced, and the absorption efficiency and treatment effect of the adsorbent on the waste gas are improved. Preferably, the ratio of the vertical distance between the limiting plate 220 and the fluidization plate 210 to the diameter of the adsorption tower 100 is 1:3 to 1:8, which can achieve the best use effect.
The steam riser 300 is disposed at a side of the adsorption tower 100, and as shown in fig. 2, the steam riser 300 includes a pipe body 310, an inlet end 330, and an outlet end 320. The steam temperature in the steam riser 300 is generally less than 500 deg.C, generally 120 deg.C-400 deg.C, and preferably 150 deg.C-300 deg.C. The pipe body 310 may be further provided with an insulating layer to prevent steam cooling. One end of the tube 310 is connected to the inlet end 330, one side of the inlet end 330 is connected to the adsorbent inlet 230, and the inlet end 330 is further provided with a valve i 332 for controlling the amount of the adsorbent entering. The other end of the steam riser tube 300 is connected with an outlet end 320, one side of the outlet end 320 is communicated with an adsorbent outlet 240, and the outlet end 320 is further provided with a valve II 322 for controlling the discharge amount of the adsorbent. The inlet end 330 of the lower part of the steam riser pipe 300 is provided with a steam inlet 333, and the adsorbent entering the steam riser pipe 300 from the adsorbent outlet 240 can be conveyed from bottom to top to the vicinity of the adsorbent inlet 230 of the outlet end 320 of the steam riser pipe 300 through steam, so that the resin enters the adsorption tower 100 again from the adsorbent inlet 230. Moreover, the steam that promotes the adsorbent can also carry out desorption to the adsorbent simultaneously, carries out the device with the absorbent pollutant in the adsorbent outside steam outlet 321 on steam riser 300 upper portion. Further, the inlet end 330 is further provided with an adsorbent outlet 331, when the adsorbent is saturated, the steam inlet 333 is closed, and the adsorbent is discharged from the adsorbent outlet 331 to be replaced by new adsorbent.
The invention also provides a circulating fluidized bed waste gas treatment system which comprises the circulating fluidized bed waste gas treatment device, the steam condenser 400 and the oil-water separation tank 500. The steam riser tube 300 of the circulating fluidized bed waste gas treatment device is communicated with the inlet of the steam condenser 400, and the oil-water separation tank 500 is communicated with the outlet of the steam condenser 400. The oil-water separation tank 500 is used for oil-water separation of the steam, wherein an oil phase is stored in the oil phase storage tank 510, and a water phase is stored in the water phase storage tank 520.
The invention also provides a method for treating waste gas by using the circulating fluidized bed waste gas treatment device, wherein the waste gas enters the adsorption tower 100 from the gas inlet 110 at the bottom of the adsorption tower 100, sequentially passes through the fluidization plate 210 from bottom to top and is discharged from the gas outlet 120 at the top of the adsorption tower 100; the ascending flow velocity of the waste gas is 600-1000 m/h. The adsorbent of volume V is charged into the adsorption tower 100, and the volume V of the adsorbent is calculated by:
wherein the content of the first and second substances,
v is the volume of the adsorbent put into use in the adsorption column 100, m3；
Q is the flow rate of exhaust gas per unit time, m3/h；
C0Is the concentration of 100 pollutants in the exhaust gas, mg/m3；
a is the retention time of the adsorbent in the adsorption tower, and a is 0.0005-0.001, h.
In the calculation formula of the present invention, 1000 means that the reference concentration of the pollutants in the exhaust gas is 1000mg/m3The reference concentration in the present invention is considered in combination with the treatment effect of the adsorbent and the pollutant concentration in the exhaust gas treated in general, and the exhaust gas pollutant concentration for achieving the best treatment effect is obtained.
The specific process for treating the waste gas by using the invention is as follows: use the resin as the adsorbent in this embodiment, waste gas gets into adsorption tower 100 from air inlet 110, the resin is added from adsorbent import 230 at the top, resin fluidization passageway between limiting plate 220 and fluidization plate 210, under the dual function of waste gas and the gravity of adsorbent itself, the adsorbent constantly moves down along the passageway, waste gas can constantly adjust the contact position of resin, and can effectively form the flow and the disturbance of resin, the contact of adsorbent with waste gas has been strengthened greatly, adsorption efficiency is improved. After the adsorbent is discharged from the adsorbent outlet 240 of the adsorption tower 100, the resin is continuously delivered to the adsorbent inlet 230 at the top of the adsorption tower 100 by means of the upward jacking action of the vapor compressed air, so as to form a flow circulation channel. Steam enters from a steam inlet 333, exits from a steam outlet 321, enters the steam condenser 400 for condensation, enters the oil-water separation tank 500 for oil-water separation, oil phase is stored in the oil phase storage tank 510, and water phase is stored in the water phase storage tank 520. When the resin is saturated, the resin is discharged from the outlet 331 and new resin is added through the inlet 230.
The toluene waste gas was treated by the treatment system of this example, and the flow rate Q of the waste gas was 1000m3H concentration of toluene in the offgas C0Is 1000mg/m3. The diameter of the adsorption tower is 1m, the rising flow rate of waste gas is 1000m/h, the channel width is 200mm, the steam adopts 0.3MPA saturated steam, the steam quantity is 100kg/h, and the desorption time is 4 h. After the treatment of the invention, the concentration of the toluene in the toluene waste gas is less than 10mg/m3。
Example 2
The basic contents of this embodiment are different from those of embodiment 1 in that: in the present embodiment, as shown in fig. 3, no position limiting plate 220 is disposed above the fluidization plate 210, the fluidization effect of the resin is slightly inferior to that of embodiment 1, and the treatment effect of the exhaust gas is slightly inferior to that of embodiment 1.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, combined, e.g., between various embodiments, adapted and/or substituted, as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (10)
1. A circulating fluidized bed exhaust treatment device, includes adsorption tower (100), the bottom of adsorption tower (100) is provided with air inlet (110) and adsorbent import (230), the bottom of adsorption tower (100) is provided with gas outlet (120) and adsorbent export (240), its characterized in that: also comprises
The fluidization plate (210) is obliquely arranged inside the adsorption tower (100), and the fluidization plate (210) is provided with air holes; and
the steam lifting pipe (300), the steam lifting pipe (300) is arranged at the side part of the adsorption tower (100); one end of the steam lifting pipe (300) is communicated with the adsorbent inlet (230), and the other end of the steam lifting pipe (300) is communicated with the adsorbent outlet (240).
2. A circulating fluid bed exhaust gas treatment device in accordance with claim 1, wherein: a limiting plate (220) is arranged above the fluidization plate (210), and the limiting plate (220) is parallel to the fluidization plate (210); and air holes are distributed in the limiting plate (220).
3. A circulating fluid bed exhaust gas treatment device in accordance with claim 1, wherein: the upper end of the fluidization plate (210) is provided with a fluidization plate inlet, and the lower end of the fluidization plate (210) is provided with a fluidization plate outlet (212).
4. A circulating fluid bed exhaust gas treatment device in accordance with claim 1, wherein: the angle of inclination alpha of the fluidization plate (210) is 45-60 DEG and/or
The aperture of the air inlet hole is 100-180 mu m.
5. A circulating fluid bed exhaust gas treatment device in accordance with claim 2, wherein: the vertical distance between the limiting plate (220) and the fluidization plate (210) is 200mm and 300 mm.
6. A circulating fluid bed exhaust gas treatment device in accordance with claim 3, wherein: the fluidization plate (210) comprises a top fluidization plate and a bottom fluidization plate;
the fluidization plate inlet of the top fluidization plate is positioned right below the adsorbent inlet (230), and the top fluidization plate is provided with a dispersion part which is used for increasing the distribution area of the adsorbent entering the top fluidization plate from the fluidization plate inlet of the top fluidization plate;
the fluidization plate outlet of the bottom fluidization plate is communicated with the adsorbent outlet (240), and the bottom fluidization plate is provided with a constriction for reducing the distribution area of the adsorbent entering the bottom fluidization plate from the fluidization plate inlet of the bottom fluidization plate.
7. A circulating fluid bed exhaust gas treatment device in accordance with claim 3, wherein: the fluidization plates (210) comprise a top fluidization plate and a bottom fluidization plate, with at least 1 middle fluidization plate (210) disposed therebetween; and the outlet of the fluidization plate of the upper stage fluidization plate (210) is arranged right above the inlet of the fluidization plate of the lower stage fluidization plate (210).
8. A circulating fluidized bed exhaust treatment system, comprising: the circulating fluidized bed waste gas treatment device comprises a circulating fluidized bed waste gas treatment device, a steam condenser (400) and an oil-water separation tank (500), wherein the circulating fluidized bed waste gas treatment device is the circulating fluidized bed waste gas treatment device as claimed in any one of claims 1 to 7, a steam lifting pipe (300) of the circulating fluidized bed waste gas treatment device is communicated with an inlet of the steam condenser (400), and the oil-water separation tank (500) is communicated with an outlet of the steam condenser (400).
9. A method of treating exhaust gas using the circulating fluid bed exhaust gas treatment device according to any one of claims 1 to 7, characterized by: waste gas enters the adsorption tower (100) from a gas inlet (110) at the bottom of the adsorption tower (100), sequentially passes through the fluidization plate (210) from bottom to top, and is discharged from a gas outlet (120) at the top of the adsorption tower (100); the ascending flow velocity of the waste gas is 600-1000 m/h.
10. A method of treating exhaust gas in a circulating fluidized bed exhaust gas treatment device according to claim 9, wherein a volume V of adsorbent is fed into the adsorption column (100) and the volume V of adsorbent is calculated by:
wherein the content of the first and second substances,
v is the volume of the adsorbent put into use in the adsorption column (100), m3；
Q is the flow rate of exhaust gas per unit time, m3/h；
C0Is the concentration of pollutants in the exhaust gas, mg/m3；
a is the retention time of the adsorbent in the adsorption tower (100), and a is 0.0005-0.001, h.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117582781A (en) * | 2024-01-17 | 2024-02-23 | 联仕新材料(苏州)股份有限公司 | Electronic grade ammonia water preparation device and preparation method thereof |
| CN117582781B (en) * | 2024-01-17 | 2024-05-17 | 联仕新材料(苏州)股份有限公司 | Electronic grade ammonia water preparation device and preparation method thereof |
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