CN111905551A - Double-layer alkali absorption oxidation tower - Google Patents
Double-layer alkali absorption oxidation tower Download PDFInfo
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- CN111905551A CN111905551A CN202010714846.7A CN202010714846A CN111905551A CN 111905551 A CN111905551 A CN 111905551A CN 202010714846 A CN202010714846 A CN 202010714846A CN 111905551 A CN111905551 A CN 111905551A
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- oxidation
- water
- alkali absorption
- tower body
- air inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
Abstract
The invention relates to a double-layer alkali absorption oxidation tower, which comprises a tower body, wherein an air inlet is arranged on one side of the lower part of the tower body, an air outlet is arranged at the top of the tower body, an oxidation water tank is arranged on one side of the bottom of the tower body, a space for containing alkali water recovery liquid is called as an alkali absorption tank on the other side of the bottom of the tower body, and the tower body is sequentially: the two alkali absorption components are stacked up and down and are used for neutralizing acid gas in the waste gas; the two oxidation assemblies are stacked up and down and are used for oxidizing organic matters in the waste gas; a demister assembly for removing liquid entrained in the exhaust gas; a water collecting and ventilating device is arranged between the alkali absorption component and the oxidation component, and liquid outlets are arranged at the bottoms of the oxidation water tank and the alkali absorption tank. The invention can realize the absorption and oxidation of waste gas, thereby reducing the occupied area, reducing the overall cost and reducing the system resistance.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a double-layer alkali absorption oxidation tower.
Background
In the technical field of waste gas treatment, an absorption tower and an oxidation tower are often used for treating waste gas, wherein the absorption tower is used for washing one or more components by utilizing a gas-liquid mass transfer theory so as to achieve the purpose of purifying a target product. The oxidation tower is arranged in the organic matter of oxidation waste gas, often need carry out neutralization absorption reaction through the absorption tower during exhaust-gas treatment, carry out oxidation reaction through the oxidation tower again, absorption tower and oxidation tower link together in order, and the waste gas is advanced down and is gone up out in proper order through absorption tower and the oxidation tower that link together in order, and absorption tower and oxidation tower area occupied is big, and whole cost is high, and system resistance is big.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a double-layer alkali absorption oxidation tower.
In order to achieve the purpose, the invention adopts the following technical scheme: double-deck alkali absorption oxidation tower, including the tower body, tower body lower part one side is equipped with the air intake, and the tower body top is equipped with the air outlet, and tower body bottom one side is equipped with the oxidation pond, and the space that tower body bottom opposite side is used for holding the buck recovery liquid is called alkali absorption cell, follows supreme being equipped with in proper order down in the tower body:
the two alkali absorption components are stacked up and down and are used for neutralizing acid gas in the waste gas;
the two oxidation assemblies are stacked up and down and are used for oxidizing organic matters in the waste gas;
a demister assembly for removing liquid entrained in the exhaust gas;
a water collecting and ventilating device is arranged between the alkali absorption component and the oxidation component, and liquid outlets are arranged at the bottoms of the oxidation water tank and the alkali absorption tank.
The alkali absorption assembly and the oxidation assembly respectively comprise a spraying device and a gas homogenizing device, the spraying device is positioned above the gas homogenizing device, the spraying device of the alkali absorption assembly is connected with a tank body containing alkaline water outside, and the spraying device of the oxidation assembly is connected with a tank body containing oxidation water outside.
The spraying device comprises a plurality of criss-cross and communicated spraying pipes, one end of one spraying pipe is a water inlet, the other end of the spraying pipe is blocked, two ports of the other spraying pipes are blocked, a plurality of uniformly distributed nozzles are arranged below the spraying pipes, the nozzles are arranged on the spraying pipes, and the spraying device is fixed on the inner wall of the tower body.
The nozzle is a spiral nozzle.
The gas homogenizing device comprises a grid support and a grid plate, the grid support is fixedly connected with the inner wall of the tower body, the grid plate is placed on the grid support, a plurality of filler balls are arranged on the top surface of the grid plate, a screen plate for preventing the filler balls from moving upwards is attached to the top surface of the filler balls, and the screen plate is fixedly connected with the inner wall of the tower body.
Water collection ventilation unit includes the water catch bowl, divide water cover support and water cover, water catch bowl center department is equipped with the air inlet, and the edge of air inlet is equipped with a vertical manger plate section of thick bamboo, manger plate section of thick bamboo lower extreme and water catch bowl fixed connection, the lateral wall and the tower body inner wall fixed connection of water catch bowl, divide water cover to fix directly over the air inlet through dividing water cover support, and the diameter of dividing water cover is greater than the diameter of air inlet, even have vertical oxidation water return pipe on the water catch bowl, oxidation water return pipe lower extreme stretches into in the oxidation pond, and oxidation water return pipe upper end and water catch bowl upper portion space intercommunication.
The defogging subassembly includes supporting web plate, be equipped with annular deep bead on the supporting web plate, the lateral wall of deep bead and supporting web plate all with tower body inner wall fixed connection, the inner wall of deep bead even has a vertical air inlet section of thick bamboo, the shutoff of air inlet section of thick bamboo upper end is equipped with a plurality of evenly distributed's venthole on the air inlet section of thick bamboo, and it has No. two packing balls to fill between air inlet section of thick bamboo outer wall and the tower body inner wall, the top surface laminating of No. two packing balls has annular web plate, the inner wall and the air inlet.
The air inlet cylinder is a cylinder, and a plurality of uniformly distributed air outlet holes are arranged on the wall of the cylinder.
The air inlet cylinder is a net cylinder.
The invention has the beneficial effects that: the invention can realize the absorption and oxidation of waste gas, thereby reducing the occupied area, reducing the overall cost and reducing the system resistance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a spraying device;
FIG. 3 is an enlarged schematic view at A in FIG. 1;
in the figure: 1-a tower body; 2-air inlet; 3, air outlet; 4-an alkali absorbent component; 5-oxidizing the component; 6-a defogging component; 61-supporting the screen plate; 62-wind deflector; 63-an air inlet cylinder; 64-No. two filler balls; 65-ring shaped mesh plate; 7-water collecting and ventilating device; 71-a water collecting tank; 72-water diversion cover bracket; 73-a water diversion cover; 74-an air inlet; 75-a water retaining cylinder; 8-oxidizing the water tank; 9-an alkali absorption tank; 10-a spraying device; 101-a spray pipe; 102-a water inlet; 103-a nozzle; 11-a gas homogenizing device; 111-a grid support; 112-a grid plate; 113-No. one filler ball; 114-mesh sheet; 12-oxidizing water return pipe;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 3, double-deck alkali absorption oxidation tower, including tower body 1, tower body 1 lower part one side is equipped with air intake 2, and tower body 1 top is equipped with air outlet 3, and tower body 1 bottom one side is equipped with oxidation water tank 8, and the space that tower body 1 bottom opposite side is used for holding lye recovery liquid is called alkali absorption cell 9, and oxidation water tank 8 and alkali absorption cell 9 bottom all are equipped with the liquid outlet, follow supreme being equipped with in proper order down in the tower body 1:
two alkali absorption components 4 which are stacked up and down and used for neutralizing acid gas in the waste gas;
two oxidation assemblies 5 stacked up and down for oxidizing organic matters in the exhaust gas;
a demisting component 6 for removing liquid carried in the waste gas, and a water collecting and ventilating device 7 is arranged between the alkali absorption component 4 and the oxidation component 5.
The alkali absorption assembly 4 and the oxidation assembly 5 both comprise a spraying device 10 and a gas homogenizing device 11, the spraying device 10 is positioned above the gas homogenizing device 11, the spraying device 10 of the alkali absorption assembly 4 is connected with a tank body containing alkali water outside, and the spraying device 10 of the oxidation assembly 5 is connected with a tank body containing oxidation water outside.
The alkaline water is sodium hydroxide, the PH is controlled within the range of 7-9, and the alkaline water is used for neutralizing acid gas in the waste gas.
The oxidizing water is sodium hypochlorite, the sodium hypochlorite firstly reacts with carbon dioxide in the air to obtain hypochlorous acid with strong oxidizing property, and the chemical formula is as follows:
NaClO+CO2+H2O＝Na2CO3+2HClO
then, the strong oxidizing property of hypochlorous acid is utilized for oxidation.
The spraying device 10 comprises a plurality of criss-cross and communicated spraying pipes 101, one end of one spraying pipe 101 is a water inlet 102, the other end of the spraying pipe 101 is blocked, two ports of the other spraying pipes 101 are blocked, a plurality of uniformly distributed nozzles 103 are arranged below the spraying pipes 101, the nozzles 103 are arranged on the spraying pipes 101, and the spraying device 10 is fixed on the inner wall of the tower body 1.
The nozzle 103 is a spiral nozzle.
The gas homogenizing device 11 comprises a grid support 111 and a grid plate 112, the grid support 111 is fixedly connected with the inner wall of the tower body 1, the grid plate 112 is placed on the grid support 111, a plurality of first filler balls 113 are arranged on the top surface of the grid plate 112, a mesh plate 114 for preventing the first filler balls 113 from moving upwards is attached to the top surface of the first filler balls 113, and the mesh plate 114 is fixedly connected with the inner wall of the tower body 1.
The water collecting and ventilating device 7 comprises a water collecting tank 71, a water dividing cover support 72 and a water dividing cover 73, the top surface of the water dividing cover 73 is conical, an air inlet 74 is arranged at the center of the water collecting tank 71, a vertical water blocking cylinder 75 is arranged at the edge of the air inlet 74, the lower end of the water blocking cylinder 75 is fixedly connected with the water collecting tank 71, the side wall of the water collecting tank 71 is fixedly connected with the inner wall of the tower body 1, the water dividing cover 73 is fixed right above the air inlet 74 through the water dividing cover support 72, the diameter of the water dividing cover 73 is larger than that of the air inlet 74, a vertical oxidation water return pipe 12 is connected onto the water collecting tank 71, the lower end of the oxidation water return pipe 12 extends into the oxidation water tank 8, and the upper end of the oxidation water return pipe 12 is.
Defogging subassembly 6 is including supporting otter board 61, be equipped with annular deep bead 62 on the supporting otter board 61, the lateral wall of deep bead 62 and supporting otter board 61 all with 1 inner wall fixed connection of tower body, even there is vertical air inlet section of thick bamboo 63 the inner wall of deep bead 62, the shutoff of air inlet section of thick bamboo 63 upper end, be equipped with a plurality of evenly distributed's venthole on the air inlet section of thick bamboo 63, and it has No. two filler balls 64 to fill between air inlet section of thick bamboo 63 outer wall and the 1 inner wall of tower body, the top surface laminating of No. two filler balls 64 has annular otter board 65, the inner.
The air inlet drum 63 is a cylinder, and a plurality of uniformly distributed air outlet holes are arranged on the wall of the drum.
The air inlet drum 63 is a net drum.
When the waste gas treatment device works, waste gas enters the tower body 1 from the air inlet 2, the waste gas passes through the two vertically-stacked alkali absorption assemblies 4, the acid gas in the waste gas is neutralized by the alkaline solution sprayed by the alkali absorption assemblies 4, the waste gas with the acid gas neutralized enters the water collecting and ventilating device 7 from the air inlet 74, then flows into the space above the water collecting tank 71 through the water dividing cover support 72, passes through the two vertically-stacked oxidation assemblies 5, the organic matter in the waste gas is oxidized by the oxidation assemblies 5, then the waste gas enters the demisting assembly 6 through the air inlet cylinder 63 for demisting and filtering water, and the filtered waste gas flows out through the air outlet 3, so that the waste gas treatment is completed.
The sprayed oxidation water is collected by the water collecting tank 71 and then flows into the oxidation water tank 8 through the oxidation water return pipe 12, and the sprayed alkaline water directly flows into the alkaline absorption tank 9.
The alkaline washing and oxidation of the invention are superposed in one tower body 1 and act in sequence without mixing. The advantages are saving first-level tower (only increasing the height by less than half) and connecting pipeline, reducing the return path of waste gas treatment (reducing the system resistance); the occupied area is reduced. In addition, the overall cost is reduced.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (9)
1. Double-deck alkali absorption oxidation tower, its characterized in that, including tower body (1), tower body (1) lower part one side is equipped with air intake (2), and tower body (1) top is equipped with air outlet (3), and tower body (1) bottom one side is equipped with oxidation pond (8), and tower body (1) bottom opposite side is used for holding the space of buck recovery liquid and is called alkali absorption cell (9), follows supreme being equipped with in proper order down in tower body (1):
two alkali absorption components (4) which are stacked up and down and are used for neutralizing acid gas in the waste gas;
two vertically stacked oxidation assemblies (5) for oxidizing organic matters in the exhaust gas;
a demister assembly (6) for removing liquid entrained in the exhaust gas;
a water collecting and ventilating device (7) is arranged between the alkali absorption component (4) and the oxidation component (5), and liquid outlets are arranged at the bottoms of the oxidation water tank (8) and the alkali absorption tank (9).
2. The double-layer alkali absorption oxidation tower according to claim 1, wherein the alkali absorption assembly (4) and the oxidation assembly (5) both comprise a spraying device (10) and a gas homogenizing device (11), the spraying device (10) is positioned above the gas homogenizing device (11), the spraying device (10) of the alkali absorption assembly (4) is connected with a tank body containing alkali water outside, and the spraying device (10) of the oxidation assembly (5) is connected with a tank body containing oxidation water outside.
3. The double-layer alkali absorption oxidation tower according to claim 2, wherein the spraying device (10) comprises a plurality of criss-cross and communicated spraying pipes (101), one end of one spraying pipe (101) is provided with a water inlet (102), the other end of the spraying pipe is blocked, two ports of the other spraying pipes (101) are blocked, a plurality of uniformly distributed nozzles (103) are arranged below the spraying pipes (101), the nozzles (103) are arranged on the spraying pipes (101), and the spraying device (10) is fixed on the inner wall of the tower body (1).
4. The double-layer alkali absorption oxidation tower according to claim 3, wherein the nozzle (103) is a spiral nozzle.
5. The double-layer alkali absorption oxidation tower as claimed in claim 2, wherein the gas homogenizing device (11) comprises a grid support (111) and a grid plate (112), the grid support (111) is fixedly connected with the inner wall of the tower body (1), the grid plate (112) is placed on the grid support (111), the top surface of the grid plate (112) is provided with a plurality of first filler balls (113), the top surface of each first filler ball (113) is attached with a mesh plate (114) for preventing the first filler balls (113) from moving upwards, and the mesh plate (114) is fixedly connected with the inner wall of the tower body (1).
6. The double-layer alkali absorption oxidation tower according to claim 5, wherein the water collection and aeration device (7) comprises a water collection tank (71), a water diversion cover bracket (72) and a water diversion cover (73), an air inlet (74) is arranged at the center of the water collection tank (71), and the edge of the air inlet (74) is provided with a vertical water retaining cylinder (75), the lower end of the water retaining cylinder (75) is fixedly connected with the water collecting tank (71), the side wall of the water collecting tank (71) is fixedly connected with the inner wall of the tower body (1), the water distributing cover (73) is fixed right above the air inlet (74) through a water distributing cover bracket (72), the diameter of the water diversion cover (73) is larger than that of the air inlet (74), the water collection tank (71) is connected with a vertical oxidation water return pipe (12), the lower end of the oxidation water return pipe (12) extends into the oxidation water tank (8), and the upper end of the oxidation water return pipe (12) is communicated with the upper space of the water collecting tank (71).
7. The double-layer alkali absorption oxidation tower of claim 1, wherein the demisting component (6) comprises a support screen (61), an annular wind shield (62) is arranged on the support screen (61), the outer side walls of the wind shield (62) and the support screen (61) are fixedly connected with the inner wall of the tower body (1), the inner wall of the wind shield (62) is connected with a vertical air inlet cylinder (63), the upper end of the air inlet cylinder (63) is blocked, a plurality of uniformly distributed air outlet holes are formed in the air inlet cylinder (63), second filler balls (64) are filled between the outer wall of the air inlet cylinder (63) and the inner wall of the tower body (1), an annular screen (65) is attached to the top surface of the second filler balls (64), and the inner wall of the annular screen (65) is fixedly connected with the outer wall of the air inlet cylinder.
8. The double-layer alkali absorption oxidation tower as claimed in claim 7, wherein the air inlet drum (63) is a cylinder, and a plurality of uniformly distributed air outlet holes are formed on the wall of the cylinder.
9. The double-layer alkali absorption oxidation tower as claimed in claim 7, wherein the air inlet drum (63) is a mesh drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010714846.7A CN111905551A (en) | 2020-07-23 | 2020-07-23 | Double-layer alkali absorption oxidation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010714846.7A CN111905551A (en) | 2020-07-23 | 2020-07-23 | Double-layer alkali absorption oxidation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111905551A true CN111905551A (en) | 2020-11-10 |
Family
ID=73281655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010714846.7A Withdrawn CN111905551A (en) | 2020-07-23 | 2020-07-23 | Double-layer alkali absorption oxidation tower |
Country Status (1)
| Country | Link |
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| CN (1) | CN111905551A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142445A (en) * | 1992-11-02 | 1994-05-24 | Ishikawajima Harima Heavy Ind Co Ltd | Stack gas desulfurizer |
| US20050132883A1 (en) * | 1999-07-19 | 2005-06-23 | Qingquan Su | Acid gas scrubbing apparatus and method |
| CN204563922U (en) * | 2015-01-19 | 2015-08-19 | 南京开拓环保科技有限公司 | A kind of for the water container between upper and lower two circulations of single tower double circulation desulphurization tower |
| CN106512681A (en) * | 2016-12-20 | 2017-03-22 | 南通春光自控设备工程有限公司 | Denitrification device |
| CN207307598U (en) * | 2017-10-19 | 2018-05-04 | 张家港市艾尔环保工程有限公司 | Multi-functional washing absorption plant |
| CN108211743A (en) * | 2018-03-09 | 2018-06-29 | 无锡雪浪环境科技股份有限公司 | A kind of deacidifying flue gas denitrification integrated device and its application method |
| CN207871881U (en) * | 2018-01-16 | 2018-09-18 | 杭州汇东环境工程有限公司 | A kind of desulphurization denitration absorption tower |
| CN208824227U (en) * | 2018-09-21 | 2019-05-07 | 深圳瑞科曼环保科技有限公司 | A kind of soda acid mixed gas treating column |
| CN210934439U (en) * | 2019-10-23 | 2020-07-07 | 杭州洁天环保科技有限公司 | Printing and dyeing effluent water sump foul smell exhaust gas treatment system |
| CN210993520U (en) * | 2019-08-07 | 2020-07-14 | 天津市英格环保科技有限公司 | Two-way water film whirl scrubbing tower that sprays |
-
2020
- 2020-07-23 CN CN202010714846.7A patent/CN111905551A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142445A (en) * | 1992-11-02 | 1994-05-24 | Ishikawajima Harima Heavy Ind Co Ltd | Stack gas desulfurizer |
| US20050132883A1 (en) * | 1999-07-19 | 2005-06-23 | Qingquan Su | Acid gas scrubbing apparatus and method |
| CN204563922U (en) * | 2015-01-19 | 2015-08-19 | 南京开拓环保科技有限公司 | A kind of for the water container between upper and lower two circulations of single tower double circulation desulphurization tower |
| CN106512681A (en) * | 2016-12-20 | 2017-03-22 | 南通春光自控设备工程有限公司 | Denitrification device |
| CN207307598U (en) * | 2017-10-19 | 2018-05-04 | 张家港市艾尔环保工程有限公司 | Multi-functional washing absorption plant |
| CN207871881U (en) * | 2018-01-16 | 2018-09-18 | 杭州汇东环境工程有限公司 | A kind of desulphurization denitration absorption tower |
| CN108211743A (en) * | 2018-03-09 | 2018-06-29 | 无锡雪浪环境科技股份有限公司 | A kind of deacidifying flue gas denitrification integrated device and its application method |
| CN208824227U (en) * | 2018-09-21 | 2019-05-07 | 深圳瑞科曼环保科技有限公司 | A kind of soda acid mixed gas treating column |
| CN210993520U (en) * | 2019-08-07 | 2020-07-14 | 天津市英格环保科技有限公司 | Two-way water film whirl scrubbing tower that sprays |
| CN210934439U (en) * | 2019-10-23 | 2020-07-07 | 杭州洁天环保科技有限公司 | Printing and dyeing effluent water sump foul smell exhaust gas treatment system |
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Application publication date: 20201110 |
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