CN209020166U - Recycle the chemical washing device of sulfuric acid - Google Patents
Recycle the chemical washing device of sulfuric acid Download PDFInfo
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- CN209020166U CN209020166U CN201821383339.4U CN201821383339U CN209020166U CN 209020166 U CN209020166 U CN 209020166U CN 201821383339 U CN201821383339 U CN 201821383339U CN 209020166 U CN209020166 U CN 209020166U
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- sulfuric acid
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- washing device
- spray tube
- tower
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- Treating Waste Gases (AREA)
Abstract
The utility model belongs to technical field of waste gas treatment, more particularly to a kind of chemical washing device for recycling sulfuric acid, including pickling tower, absorption tower, the first packing layer is arranged in pickling tower top, circulating water pool is arranged in lower part, sulfuric acid spray tube is arranged in pickling tower above the first packing layer, and exhaust gas entrance is arranged below the first packing layer；Circulation line is set between circulating water pool and sulfuric acid spray tube, is arranged on circulation line and sulfuric acid in circulating water pool is delivered up to the water circulating pump of sulfuric acid spray tube；Second packing layer is set inside the absorption tower, exhaust pipe is connected between pickling top of tower and the second packing layer lower section, lye spray tube is set above the second packing layer；Gas exhaust piping is connected at the top of the absorption tower.The chemical washing device of recycling sulfuric acid provided by the utility model first carries out pickling to exhaust gas as circulation fluid using sulfuric acid, then carries out alkali cleaning to exhaust gas using lye, reduces the consumption of lye in washing process.
Description
Technical field
The utility model belongs to technical field of waste gas treatment, and in particular to a kind of chemical washing device for recycling sulfuric acid.
Background technique
Currently, well known chemical washing is the principles of chemistry using acid-base neutralization, acidic materials or alkaline matter will be contained
Exhaust gas be converted into neutrality or faintly acid or weakly alkaline exhaust gas by sufficiently react with corresponding lye or acid solution.For example, changing
It learns factory and contains SO3Gas leads into chemical washing device by blower, by packing layer；The SO of gas phase3Ingredient is acidity, with change
The lye for learning wash mill top spray, which is in contact, occurs neutralization reaction, to remove the SO in removing exhaust gas3, tail gas can row up to standard
It puts.However for chemical plant, SO in exhaust gas3Concentration is higher, directly big with lye amount consumed by lye generation neutralization reaction,
And when exhaust gas concentration is in peak value, there may be the risks for being more than discharge standard for waste gas outlet.
Utility model content
The purpose of the utility model is to provide a kind of chemical washing devices for recycling sulfuric acid, first using sulfuric acid as circulation fluid
Pickling is carried out to exhaust gas, then alkali cleaning is carried out to exhaust gas using lye, reduces the consumption of lye in washing process.
Purpose of the utility model is realized as follows: a kind of chemical washing device for recycling sulfuric acid, including pickling tower, suction
Tower is received, the first packing layer is arranged in pickling tower top, and circulating water pool is arranged in lower part, and sulfuric acid is arranged above the first packing layer in pickling tower
Exhaust gas entrance is arranged below the first packing layer in spray tube；Circulation line is set between circulating water pool and sulfuric acid spray tube, is recycled
Sulfuric acid in circulating water pool is delivered up to the water circulating pump of sulfuric acid spray tube by setting on pipeline；Setting the inside the absorption tower
It is connected with exhaust pipe between below two packing layers, pickling top of tower and the second packing layer, lye is set above the second packing layer
Spray tube；Gas exhaust piping is connected at the top of the absorption tower, and air exhauster is set on gas exhaust piping；The absorb the bottom of the tower setting is useless
Liquid outlet.
Further, sulfuric acid dosing mouth is arranged in the circulating water pool side wall.
Further, discharge outlet is arranged in the circulating water pool side wall.
Further, two water pump branches are parallel on the circulation line, every each setting one in water pump branch road follows
Ball valve is respectively set at water circulating pump both ends in ring water pump, water pump branch.
Further, butterfly valve is arranged in sulfuric acid spray tube interface in the circulation line.
Further, two blower branches, each one row of setting in every blower branch road are parallel on the gas exhaust piping
Gas blower；Butterfly valve is respectively set at air exhauster both ends in blower branch.
Further, normally closed discharge outlet is arranged in the circulating water pool bottom.
Compared with the prior art, the utility model has prominent and beneficial technical effects that:
For chemical plant SO3Exhaust gas first carries out pickling to exhaust gas as circulation fluid using sulfuric acid, utilizes SO3+2H--->
H2SO3, remove the SO of part in removing exhaust gas3；Alkali cleaning is carried out to exhaust gas as lye using NaOH again, guarantees waste gas outlet row up to standard
It puts.
Detailed description of the invention
Fig. 1 is the schematic diagram of chemical washing device in the utility model embodiment.
Appended drawing reference: 1, pickling tower；1a, the first packing layer；1b, circulating water pool；1c, sulfuric acid spray tube；2, absorption tower；
2a, the second packing layer；2b, lye spray tube；3, sulfuric acid storage tank；4, exhaust gas entrance；5, sulfuric acid dosing mouth；6, discharge outlet；7, it gives up
Liquid outlet；8, water circulating pump；9, air exhauster；F1, ball valve；F2, butterfly valve；A, circulation line；B, exhaust pipe；C, exhaust pipe
Road.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
A kind of chemical washing device recycling sulfuric acid, as shown in Figure 1, including pickling tower 1, absorption tower 2,1 top of pickling tower
First packing layer 1a is set, sulfuric acid spray tube 1c is set above the first packing layer 1a；1 lower part of pickling tower is provided with circulating water pool
Exhaust gas entrance 4 is arranged in 1b above circulating water pool 1b and below the first packing layer 1a；Containing SO3Exhaust gas from exhaust gas entrance 4 into
Enter, and pass upward through the first packing layer 1a, with from the sulfuric acid that sulfuric acid spray tube 1c sprays above the first packing layer 1a
One packing layer 1a reaction；Herein, the first packing layer 1a is preferably uniformly distributed two layers, after guaranteeing that sulfuric acid solution gets off from top spray
It is come into full contact with exhaust gas and takes away the SO in exhaust gas3Component.It should be noted that the acidic materials in exhaust gas are not limited solely to
SO3, can also be other sour gas such as nitrogen oxides, chlorine.
Wherein, connected between the sulfuric acid spray tube 1c on 1 top of pickling tower and the circulating water pool 1b of lower part by circulation line A
It connects, water circulating pump 8 is set on circulation line A, water circulating pump 8 is two, is arranged on circulation line A by water pump branch circuit parallel connection；
Two water circulating pumps, 8 one normal uses, one spare, guarantees the uninterrupted processing of exhaust gas.8 both ends of water circulating pump are respectively set
Valve carrys out an on-off wherein water pump branch, and valve preferably uses ball valve F1, high pressure resistant, good seal performance.Sulphur in circulation line A
Acid solution flows to the sulfuric acid spray tube 1c on 1 top of pickling tower after the pressurization of water circulating pump 8, in order to more effectively control sulfuric acid spray tube
The acid solution of 1c sprays speed, and butterfly valve F2 is arranged near circulation line A and the junction sulfuric acid spray tube 1c, for controlling media flow resistance
Power.
In order to supplement the sulfuric acid liquid in circulating water pool 1b, sulfuric acid dosing mouth 5 is set in circulating water pool 1b side wall upper part position；
Simultaneously in order to which the higher sulfuric acid liquid of concentration is discharged in time, discharge outlet 6 is additionally provided on circulating water pool 1b side wall, discharge outlet 6 divides
Cloth is located at circulating water pool 1b side wall upper part at Liang Chu, one, and position is on the lower side relative to sulfuric acid dosing mouth 5, and another place is located at circulation
The pond bottom 1b；Discharge outlet 6 positioned at lower part is generally in normally off, just opens when needing to clear up circulating water pool 1b.
Second packing layer 2a is set inside absorption tower 2, is connected between 1 top of pickling tower and the second lower section packing layer 2a useless
Lye spray tube 2b is set above air pipe B, the second packing layer 2a；At the top of absorption tower 2 on connection gas exhaust piping C, gas exhaust piping C
Air exhauster 9 is set；Two blower branches are parallel on gas exhaust piping C, an air exhauster is respectively arranged in every blower branch road
9；Butterfly valve F2 is respectively set at 9 both ends of air exhauster in blower branch, and air exhauster 9 is also a normal use, and one spare, protects
Demonstrate,prove normal exhaust.Lye is uniformly sprayed by the lye spray tube 2b on 2 top of absorption tower, and the exhaust gas contact after overpickling tower 1,
And neutralize remaining SO in exhaust gas3, the gas exhaust piping C at the top of waste gas flow direction absorption tower 2 later, and be discharged by air exhauster 9.Through
It crosses and SO3Lye after neutralization is then used as waste liquid to be discharged from the waste liquid outlet 7 of 2 bottom of absorption tower, as wastewater treatment.
Above-mentioned the first packing layer 1a and the second packing layer 2a is generally made of inert solid material with larger porosity
Layer structure, for increase chemical reaction material between contact area, realize sufficiently reaction.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (7)
1. a kind of chemical washing device for recycling sulfuric acid, it is characterised in that: including pickling tower (1), absorption tower (2), pickling tower (1)
The first packing layer (1a) is arranged in top, and circulating water pool (1b) is arranged in lower part, and pickling tower (1) is arranged above the first packing layer (1a)
Exhaust gas entrance (4) are arranged below the first packing layer (1a) in sulfuric acid spray tube (1c)；
Circulation line (A) is set between circulating water pool (1b) and sulfuric acid spray tube (1c), is arranged on circulation line (A) by recirculated water
Pond (1b) interior sulfuric acid is delivered up to the water circulating pump of sulfuric acid spray tube (1c) (8)；
The second packing layer (2a) is set inside the absorption tower (2), at the top of pickling tower (1) between the second packing layer (2a) lower section
It is connected with exhaust pipe (B), lye spray tube (2b) is set above the second packing layer (2a)；
Gas exhaust piping (C) is connected at the top of the absorption tower (2), air exhauster (9) are set on gas exhaust piping (C)；The absorption tower
(2) bottom setting waste liquid outlet (7).
2. a kind of chemical washing device for recycling sulfuric acid according to claim 1, it is characterised in that: the circulating water pool
Sulfuric acid dosing mouth (5) are arranged in (1b) side wall.
3. a kind of chemical washing device for recycling sulfuric acid according to claim 1, it is characterised in that: the circulating water pool
Discharge outlet (6) are arranged in (1b) side wall.
4. a kind of chemical washing device for recycling sulfuric acid according to claim 1, it is characterised in that: the circulation line
(A) two water pump branches are parallel on, a water circulating pump (8) is respectively arranged in every water pump branch road, and water pump branch is in recirculated water
Ball valve (F1) is respectively set in pump (8) both ends.
5. a kind of chemical washing device for recycling sulfuric acid according to claim 1, it is characterised in that: the circulation line
(A) butterfly valve (F2) is set in sulfuric acid spray tube (1c) interface.
6. a kind of chemical washing device for recycling sulfuric acid according to claim 1, it is characterised in that: the gas exhaust piping
(C) two blower branches are parallel on, an air exhauster (9) is respectively arranged in every blower branch road；Blower branch is in exhaust wind
Butterfly valve (F2) is respectively set in machine (9) both ends.
7. a kind of chemical washing device for recycling sulfuric acid according to claim 3, it is characterised in that: the circulating water pool
The bottom (1b) is provided with normally closed discharge outlet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383339.4U CN209020166U (en) | 2018-08-27 | 2018-08-27 | Recycle the chemical washing device of sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383339.4U CN209020166U (en) | 2018-08-27 | 2018-08-27 | Recycle the chemical washing device of sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209020166U true CN209020166U (en) | 2019-06-25 |
Family
ID=66875451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821383339.4U Active CN209020166U (en) | 2018-08-27 | 2018-08-27 | Recycle the chemical washing device of sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209020166U (en) |
-
2018
- 2018-08-27 CN CN201821383339.4U patent/CN209020166U/en active Active
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