CN206652356U - Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system - Google Patents
Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system Download PDFInfo
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- CN206652356U CN206652356U CN201720166720.4U CN201720166720U CN206652356U CN 206652356 U CN206652356 U CN 206652356U CN 201720166720 U CN201720166720 U CN 201720166720U CN 206652356 U CN206652356 U CN 206652356U
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- absorbing liquid
- tail gas
- sulfuric acid
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Abstract
It the utility model is related to sulfuric acid tail gas absorbing liquid oxid-reclamatiom system, it is connected on tail gas funnel by induced duct with blower motor, the air outlet of the blower motor is connected by discharge pipe with ammonia washing and spraying tower, the ammonia washing and spraying tower is internally provided with ammonia spray device, the bottom liquid outlet of the ammonia washing and spraying tower is connected by absorbing liquid drain pipe with absorbing liquid buffer tank, the liquid outlet of the absorbing liquid buffer tank is connected by first flow pump with absorbing liquid feed tube, the absorbing liquid feed tube is connected with the inlet of oxidation tank, aeration tube is installed inside the oxidation tank, the aeration tube is connected by ammonia pipe with ammonia holding vessel, the bottom drain pipe of the oxidation tank is connected by second flow pump with two ammonium workshops.Tail gas absorption liquid can be carried out secondary oxidation by this recovery system inside oxidation tank, and then convert it into ammonium sulfate, then ammonium sulfate is used for the production of two ammoniums, while absorbing liquid has been handled, save resource.
Description
Technical field
The utility model belongs to sulfuric acid production process technical field, and absorbing liquid oxidation more particularly to a kind of sulfuric acid tail gas returns
Receipts system, suitable for sulfuric acid production process the oxidation of tail gas desulfurization liquid be recycled.
Background technology
During sulfuric acid production process, substantial amounts of noxious acidic gaseous can be contained in tail gas, to tail gas
Reason, generally use ammonia wash method, absorption cleaning are carried out to sour gas by ammoniacal liquor, but absorbing liquid caused by after absorbing is main
Composition is ammonium sulfite and ammonium bisulfite, and ammonium sulfite is tight to pipeline and equipment corrosion in acidity with bisulfite ammonium salt solution
Weight, and can not recycle, current common processing mode is that absorbing liquid pump is sent into head-tank to be stored, so both unrestrained
Take resource and be unfavorable for environmental protection again, and waste substantial amounts of water resource.
Utility model content
The purpose of this utility model is to provide a kind of sulfuric acid tail gas absorbing liquid oxid-reclamatiom system, and this recovery system can incite somebody to action
Tail gas absorption liquid carries out secondary oxidation inside oxidation tank, and then converts it into ammonium sulfate, then ammonium sulfate is used for into two ammoniums
Production, while absorbing liquid has been handled, is also effectively protected to pipeline and equipment, while also a saving resource, plays
The purpose of environmental protection.
To reach above-mentioned purpose, design of the present utility model is：Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system, it is wrapped
The tail gas funnel for sulfuric acid plant's exhaust emissions is included, is connected on the tail gas funnel by induced duct with blower motor, it is described to draw
The air outlet of wind turbine is connected by discharge pipe with ammonia washing and spraying tower, and the ammonia washing and spraying tower is internally provided with ammonia spray dress
Put, the bottom liquid outlet of the ammonia washing and spraying tower is connected by absorbing liquid drain pipe with absorbing liquid buffer tank, and the absorbing liquid is delayed
The liquid outlet for depositing tank is connected by first flow pump with absorbing liquid feed tube, the inlet of the absorbing liquid feed tube and oxidation tank
It is connected, aeration tube is installed, the aeration tube is connected by ammonia pipe with ammonia holding vessel, the oxidation inside the oxidation tank
The bottom drain pipe of tank is connected by second flow pump with two ammonium workshops, and the oxidation tank is connected with intelligent hydraulic control unit.
The ammonia spray device includes ammoniacal liquor holding vessel, and the ammoniacal liquor holding vessel is by ammoniacal liquor drain pipe and is arranged on ammonia
Multi-layer sprinkling pipe inside washing and spraying tower is connected, and filtering silk screen is additionally provided with the inside of ammonia washing and spraying tower.
The bottom of the ammonia washing and spraying tower is provided with residue outlet.
The intelligent hydraulic control unit includes being arranged on the PH detectors inside oxidation tank, and the PH detectors pass through controller
It is connected with first flow pump, control absorbing liquid enters inbound traffics.
Reflux cycle pipe is installed, the reflux cycle pipe is connected with ammonia house steward, the ammonia at the top of the oxidation tank
Gas house steward is connected with ammonia holding vessel.
Small breather pipe is communicated with the supervisor of the aeration tube.
The utility model has the advantages that：
1st, the waste gas of the tail gas funnel of sulfuric acid plant can be introduced by air-introduced machine by ammonia washing and spraying tower, passes through ammonia washing and spraying
Ammonia spray device inside tower carries out effective spray-absorption to tail gas, and the tail gas after spraying effectively is transformed into Asia
Ammonium sulfate and bisulfite ammonium salt solution.
2nd, by setting absorbing liquid buffer tank, the ammonium sulfite that spray is formed afterwards can be entered with bisulfite ammonium salt solution
Row storage, then ammonium sulfate is converted it into its further oxidation by oxidation tank.
3rd, by setting oxidation tank to be passed through ammonia inside it, ammonia is to ammonium sulfite and the pH value of bisulfite ammonium salt solution
Effectively adjusted, and then it is aoxidized, ultimately form the ammonium sulfate of neutrality, thus will not be to equipment and pipe
Road causes any damage, but also can reuse, and then improves the utilization rate of resource.
4th, preliminary caching can be carried out to absorbing liquid by absorbing liquid buffer tank, and then facilitates entering for subsequent control solution
Enter amount.
5th, ammonia can be provided to oxidation tank inside by ammonia holding vessel, and then ensures normal oxidizing process.
6th, by setting PH detectors inside oxidation tank, it can in time understand in the solution inside oxidation tank and aoxidize feelings
Condition, and then by the data transfer of collection to controller, then the flow by controller control first flow pump, ensure oxidizing process.
7th, the production of two ammoniums can be carried out by the way that the solution finally aoxidized is transported into two ammonium workshops, and then improved
The utilization rate of resource.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the utility model overall structure diagram.
In figure：Tail gas funnel 1, ammoniacal liquor holding vessel 2, induced duct 3, blower motor 4, ammoniacal liquor drain pipe 5, ammonia washing and spraying tower 6,
Multi-layer sprinkling pipe 7, filtering silk screen 8, discharge pipe 9, absorbing liquid drain pipe 10, residue outlet 11, absorbing liquid buffer tank 12, oxidation tank
13rd, PH detectors 14, absorbing liquid feed tube 15, first flow pump 16, controller 17, aeration tube 18, second flow pump 19, two ammoniums
Workshop 20, reflux cycle pipe 21, ammonia pipe 22, ammonia holding vessel 23, ammonia house steward 24.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Fig. 1 is participated in, sulfuric acid tail gas absorbing liquid oxid-reclamatiom system, it includes the tail gas funnel for sulfuric acid plant's exhaust emissions
1, it is connected by induced duct 3 with blower motor 4 on the tail gas funnel 1, the air outlet of the blower motor 4 passes through discharge pipe 9
It is connected with ammonia washing and spraying tower 6, the ammonia washing and spraying tower 6 is internally provided with ammonia spray device, the bottom of the ammonia washing and spraying tower 6
Liquid outlet is connected by absorbing liquid drain pipe 10 with absorbing liquid buffer tank 12, and the liquid outlet of the absorbing liquid buffer tank 12 passes through
One flow pump 16 is connected with absorbing liquid feed tube 15, and the absorbing liquid feed tube 15 is connected with the inlet of oxidation tank 13, described
Aeration tube 18 is installed, the aeration tube 18 is connected by ammonia pipe 22 with ammonia holding vessel 23, the oxygen inside oxidation tank 13
The bottom drain pipe for changing tank 13 is connected by second flow pump 19 with two ammonium workshops 20, the oxidation tank 13 and intelligent hydraulic control
Device is connected.Using said structure, in the course of work, the waste gas of the tail gas funnel 1 of sulfuric acid plant is incorporated into by ammonia by air-introduced machine 3
Washing and spraying tower 6, effective spray-absorption is carried out to tail gas by the ammonia spray device inside ammonia washing and spraying tower 6, after spray
Tail gas effectively transformed into ammonium sulfite and bisulfite ammonium salt solution, recycle oxidation tank 13 to enter above-mentioned absorbing liquid
Row oxidation, the solution after aoxidizing are transported to two ammonium workshops and carry out secondary recovery utilization, improve resource utilization, together
When serve environmental protection purpose.
Further, the ammonia spray device includes ammoniacal liquor holding vessel 2, and the ammoniacal liquor holding vessel 2 goes out liquid by ammoniacal liquor
Pipe 5 is connected with the Multi-layer sprinkling pipe 7 inside ammonia washing and spraying tower 6, and filter wire is additionally provided with the inside of ammonia washing and spraying tower 6
Net 8.During spray, by entering after ammoniacal liquor is atomized in the presence of Multi-layer sprinkling pipe 7 with the sour gas in tail gas
Row is effective to be absorbed, and then it is absorbed.And filtering silk screen 8 can filter out the dust in tail gas, purification ensure that
Effect.
Further, the bottom of the ammonia washing and spraying tower 6 is provided with residue outlet 11.Spray can be washed ammonia by residue outlet 11
The residue discharge drenched inside tower 6.
Further, the intelligent hydraulic control unit includes being arranged on the PH detectors 14 inside oxidation tank 13, the PH inspections
Survey instrument 14 by controller 17 with first flow pump 16 to be connected, control absorbing liquid enters inbound traffics.Pass through intelligent hydraulic control unit energy
The inlet of absorbing liquid is enough controlled, in the course of work, monitors the solution pH value inside oxidation tank in time by PH detectors 14, then
By the data transfer of collection to controller 17, then the flow of first flow pump 16 is controlled by controller 17, reach control absorbing liquid
Inlet, and then the effective oxidizing process for controlling absorbing liquid.
Further, the top of the oxidation tank 13 is provided with reflux cycle pipe 21, the reflux cycle pipe 21 and ammonia
House steward 24 is connected, and the ammonia house steward 24 is connected with ammonia holding vessel 23.Escape can be dissociated by it by reflux cycle pipe 21
Ammonia afterwards imported into inside ammonia holding vessel 23, and then it is recycled again, has saved resource.
Further, small breather pipe is communicated with the supervisor of the aeration tube 18.Contact surface is increased by small breather pipe
Product, improves oxidation efficiency.
The course of work of the present utility model：
First, the waste gas of the tail gas funnel 1 of sulfuric acid plant can be incorporated into by ammonia washing and spraying tower 6 by air-introduced machine 3, passes through ammonia
Ammonia spray device inside washing and spraying tower 6 carries out effective spray-absorption to tail gas, and the tail gas after spraying effectively is turned
It is melted into as ammonium sulfite and bisulfite ammonium salt solution；
Then, ammonium sulfite and bisulfite ammonium salt solution are incorporated into by oxidation tank 13 by first flow pump 16, pass through oxygen
Change tank 13 is passed through ammonia with bisulfite ammonium salt solution to ammonium sulfite and further aoxidized, and then it is converted into the sulfuric acid of neutrality
Ammonium；
Finally, the production of two ammoniums can be carried out by the solution after oxidation being transported into two ammonium workshops 20, and then be improved
The utilization rate of resource.
Of the present utility model and operation principle：
Tower external oxidation can ensure that the solution composition in ammonia washing and spraying tower is mainly (NH4)2SO3And NH4HSO3, can so lead to
Cross and note ammonia to solution to adjust (NH4)2SO3And NH4HSO3Ratio, that is, utilize (NH4)2SO3And NH4HSO3Between pH value
Relation adjusts ammonia injection rate.Due to (NH4)2SO3And NH4HSO3Free SO is not had in mixed solution2And NH3, so that inhaling
Receive SO2Efficiency reach highest and amount of ammonia slip is minimum.Again due to being mainly (NH in solution4)2SO3And NH4HSO3, it is possible to
Periodically discharged in certain density desulfurizing tower solution to oxidation tank and aoxidized according to required concentration requirement.Must while oxidation
A certain amount of ammonia must be injected, so as to which the ammonium bisulfite in solution is reduced into ammonium sulfite, ammonium sulfate is reoxidised into, in oxidation
Ammonium sulfate with after is pumped to two ammonium factories with conveying and used.
Caused performance analysis after transformation：
It is 99.5% calculating by " 836 " sulfuric acid plant converter total conversion, then washes the tail gas of system into tail by two suction towers
SO2Concentration：1000mg/Nm3, sulfuric acid mist concentration：42mg/ Nm3, tail gas total amount is 179600Nm3/ h, the tail gas SO of discharge2
Concentration：200mg/Nm3, sulfuric acid mist concentration：30mg/ Nm3, then it is computed that 300.8Kg ammonium sulfate can be produced per hour（Purity
100%）, 7.2 tons of ammonium sulfate can be produced daily, and annual production calculated by 320 days, then can produce 2304 tons of ammonium sulfate year, added two
Ammonium system is equivalent can to produce 2304 tons of two ammonium, by two ammoniums producer price, 2600 yuan of calculating per ton, can bring benefits 5990400 every year
Member.Environmentally friendly aspect can reduce 36 tons of discharge of wastewater daily, every year can 11520 tons of emission reduction waste water.
Embodiment of the present utility model is explained in detail with reference to accompanying drawing, but the utility model be not limited to it is above-mentioned
Embodiment.Technical staff can be without prejudice to innovative point of the present utility model and operating procedure, in claims
It is interior, above-described embodiment is modified.The scope of protection of the utility model, it should be covered such as claims of the present utility model.
Claims (6)
1. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system, it is characterised in that：It includes the exhaust smoke for sulfuric acid plant's exhaust emissions
Chimney（1）, the tail gas funnel（1）On pass through induced duct（3）With blower motor（4）It is connected, the blower motor（4）Air outlet
Pass through discharge pipe（9）With ammonia washing and spraying tower（6）It is connected, the ammonia washing and spraying tower（6）Ammonia spray device is internally provided with, it is described
Ammonia washing and spraying tower（6）Bottom liquid outlet pass through absorbing liquid drain pipe（10）With absorbing liquid buffer tank（12）It is connected, the absorption
Liquid buffer tank（12）Liquid outlet pass through first flow pump（16）With absorbing liquid feed tube（15）It is connected, the absorbing liquid feed tube
（15）With oxidation tank（13）Inlet be connected, the oxidation tank（13）Inside is provided with aeration tube（18）, the aeration tube
（18）Pass through ammonia pipe（22）With ammonia holding vessel（23）It is connected, the oxidation tank（13）Bottom drain pipe pass through second flow
Pump（19）With two ammonium workshops（20）It is connected, the oxidation tank（13）It is connected with intelligent hydraulic control unit.
2. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system according to claim 1, it is characterised in that：The ammonia spray dress
Put including ammoniacal liquor holding vessel（2）, the ammoniacal liquor holding vessel（2）Pass through ammoniacal liquor drain pipe（5）With installed in ammonia washing and spraying tower（6）It is interior
The Multi-layer sprinkling pipe in portion（7）It is connected, in ammonia washing and spraying tower（6）Inside be additionally provided with filtering silk screen（8）.
3. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system according to claim 1 or 2, it is characterised in that：The ammonia washes spray
Drench tower（6）Bottom residue outlet is installed（11）.
4. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system according to claim 1, it is characterised in that：The intelligent hydraulic control dress
Put including installed in oxidation tank（13）Internal PH detectors（14）, the PH detectors（14）Pass through controller（17）With first
Flow pump（16）It is connected, control absorbing liquid enters inbound traffics.
5. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system according to claim 1, it is characterised in that：The oxidation tank（13）
Top reflux cycle pipe is installed（21）, the reflux cycle pipe（21）With ammonia house steward（24）It is connected, the ammonia house steward
（24）With ammonia holding vessel（23）It is connected.
6. sulfuric acid tail gas absorbing liquid oxid-reclamatiom system according to claim 1, it is characterised in that：The aeration tube（18）
Supervisor on be communicated with small breather pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166720.4U CN206652356U (en) | 2017-02-23 | 2017-02-23 | Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166720.4U CN206652356U (en) | 2017-02-23 | 2017-02-23 | Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206652356U true CN206652356U (en) | 2017-11-21 |
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ID=60314115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720166720.4U Active CN206652356U (en) | 2017-02-23 | 2017-02-23 | Sulfuric acid tail gas absorbing liquid oxid-reclamatiom system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206652356U (en) |
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2017
- 2017-02-23 CN CN201720166720.4U patent/CN206652356U/en active Active
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