CN109499289A - A kind of processing method and processing device of desulfidation tail gas - Google Patents
A kind of processing method and processing device of desulfidation tail gas Download PDFInfo
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- CN109499289A CN109499289A CN201811317829.9A CN201811317829A CN109499289A CN 109499289 A CN109499289 A CN 109499289A CN 201811317829 A CN201811317829 A CN 201811317829A CN 109499289 A CN109499289 A CN 109499289A
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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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
- B01D53/73—After-treatment of removed components
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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Abstract
The present invention provides a kind of processing method and processing devices of desulfidation tail gas, described method includes following steps: using ammonia as desulfurizing agent, coming into full contact on sulfuric acid tail gas absorption tower with sulfur-containing smoke gas gas-liquid and reacts the mixed solution for generating ammonium sulfite, ammonium bisulfite, ammonium sulfate；Ammonium sulfite solution, ammonium bisulfite and the concentrated sulfuric acid of generation carry out oxidation reaction in a kettle and obtain ammonium sulfate, while releasing sulfur dioxide gas；Ammonium sulfate obtains sulfuric acid ammonium product by subsequent processing, and the sulfur dioxide and vapor for reacting released pass through return pipe into the sulfur-containing smoke gas feed inlet after separation.Sulfite acid ammonium of the present invention be converted into ammonium sulfate directly adopt one step of the concentrated sulfuric acid conversion can be completed, it is easy to operate, ammonium sulfite conversion ratio is up to 100%, and the energy consumption of air compressor can be saved, simultaneously, by the sulfur dioxide recovery in tail gas into acid making system, to improve the utilization rate of sulphuric acid output and sulphur.
Description
Technical field
The present invention relates to flue gas desulfurization technique field more particularly to a kind of processing method and processing devices of desulfidation tail gas.
Background technique
World Environment is worsening, and China increases the management of environment year by year, deeply opens in China
Open up energy-saving and emission-reduction work.The discharge amount of sulfur dioxide is being cut down year by year by State Ministry of Environmental Protection, it is desirable that scope of the enterprise expansion cannot increase
Add the discharge amount of sulfur dioxide, and there must be corresponding emission reduction every year.Sulphur is produced after the coke-oven plant Xuan Gang gas purification AS desulfurization
During acid, sulfide hydrogen acid gas burns in incinerator produces sulfur dioxide, under the effect of the catalyst and empty through contact tower
Oxygen reaction production sulfur trioxide in gas, acid gas containing sulfur trioxide absorb production sulfuric acid, tail gas by 78% diluted acid in absorption tower
Acid mist is removed through bar type, acid mist filter, and atmosphere is discharged by chimney.But still contain in the tail gas being discharged after being filtered
Sulfur dioxide.The sulfur dioxide of generation usually requires desulfurization process.The solution that pyrite-based sulfuric acid production tail gas by ammonia method desulfurization generates contains
Ammonium sulfate, ammonium sulfite, ammonium bisulfite, and imonium and hydrogen ammonium belong to unstable compound, to be such as fully converted into ammonium sulfate
It is commonly substantially aerated in technique and injection aoxidizes two kinds of forms, greatest drawback is that power consumption is excessively high.
Summary of the invention
It is an object of the invention to overcome the defect of the prior art, the processing method and dress of a kind of desulfidation tail gas are provided
It sets, sulfurous acid acid ammonium is converted into ammonium sulfate without compressed air oxidation, and directlying adopt the conversion of one step of the concentrated sulfuric acid can be completed.Not only
Operate extremely simple, ammonium sulfite conversion ratio can save the energy consumption of air compressor up to 100%；Meanwhile it will be in tail gas
Sulfur dioxide recovery into acid making system, to improve the utilization rate of sulphuric acid output and sulphur.
The present invention is implemented as follows:
One of the objects of the present invention is to provide a kind of processing methods of desulfidation tail gas, include the following steps:
Step 1, using ammonia as desulfurizing agent, come into full contact on sulfuric acid tail gas absorption tower and sulfur-containing smoke gas gas-liquid, in tail gas
SO2With NH in depickling lean solution3Reaction generates the mixed solution of ammonium sulfite, ammonium bisulfite, ammonium sulfate, and the ammonia includes liquid
Ammonia, ammonium hydroxide or/and ammonium bicarbonate；
Step 2, ammonium sulfite, bisulfite ammonium salt solution and the concentrated sulfuric acid generated carry out oxidation reaction in a kettle and obtain
Ammonium sulfate, while releasing sulfur dioxide gas；
The ammonium sulfate that step 3, step 2 generate is sent to solid-liquid separator, isolated solid ammonium sulfate by crystallizer
It is dried in ammonium sulfate drier, i.e. acquisition finished product sulfuric acid ammonium, is processed into commodity thiamine fertilizer；
Step 4, the step 2 react released sulfur dioxide and vapor by the subsequent induced pipe of reaction kettle and
The negative pressure of air blower is extracted out simultaneously, passes through return pipe, sulfur-bearing cigarette using the containing water vapor gas after gas-liquid separator separates
Gas feed inlet enters sulfuric acid tail gas absorption tower.
Further, in the step 1, for ammonia/sulphur than being by mol 1.5~2, gas/liquid ratio is 3000- by volume
4000。
Further, in the step 2, the concentration of the concentrated sulfuric acid is 98.3%-93%.
Further, in the step 3, the temperature of the hot fume is 100~160 DEG C.
The second object of the present invention is the provision of a kind of device for realizing the method, including sulfuric acid tail gas absorbs
Tower, reaction kettle, ammonium sulfate separating mechanism, sulfur dioxide separating mechanism；
The sulfuric acid tail gas absorption tower includes sulfuric acid tail gas absorbent tower body, ammonium hydroxide feed pipe, sulfur-containing smoke gas feed pipe
Road and gas distribution tube positioned at the bottom of the sulfuric acid tail gas absorbent tower body, the sulfuric acid tail gas absorbent tower body are equipped with
Ammonium hydroxide feed inlet, sulfur-containing smoke gas feed inlet, gas discharge outlet and discharge port, the ammonium hydroxide feed inlet and the ammonium hydroxide feed pipe
It is connected, the sulfur-containing smoke gas feed inlet is connected with the sulfur-containing smoke gas feed pipe, uniformly sets on the gas distribution tube
There is stomata；
The reaction kettle includes reaction kettle ontology and the ammonium sulfite solution charging on the reaction kettle ontology
Mouth, concentrated sulfuric acid feed inlet, sulfur dioxide discharge port, ammonium sulfate discharge port, the ammonium sulfite solution feed inlet and the sulfuric acid
The discharge port of tail gas absorber is connected；
The ammonium sulfate separating mechanism includes drying air fan, and is sequentially connected logical crystallizer, solid-liquid separator and does
Dry device, the drier rear end are equipped with the drying air fan, and the outlet of the drying air fan is connected with crystallizer；
The sulfur dioxide separating mechanism includes sulfur dioxide discharge nozzle, gas-liquid separator and return pipe, the titanium dioxide
Sulphur discharge nozzle is connected with the sulfur dioxide discharge port of the reaction kettle, and the return pipe contains with the sulfuric acid tail gas absorption tower
Sulphur smoke feed mouth is connected.
Further, charging blower is equipped at the sulfur-containing smoke gas feed inlet.
Further, the lower section of the ammonium hydroxide feed inlet on the sulfuric acid tail gas absorption tower is equipped with charging liquid distributor.
Further, the sulfuric acid tail gas absorption tower is additionally provided with circulation line, the circulation line include circulation fluid import,
Ejector, lower liquid pipe, circulating pump, circulation pipe and circulation fluid outlet pass through the circulation pipe and the jet stream from circulation fluid outlet
Device is connected, and speed searches ejector and connects the lower liquid pipe, and the lower liquid pipe protrudes into the middle and lower part on the sulfuric acid tail gas absorption tower.
The invention has the following advantages:
The processing unit and method of a kind of desulfidation tail gas provided by the invention, sulfurous acid acid ammonium are converted into ammonium sulfate without pressure
Contracting air oxidation, directlying adopt the conversion of one step of the concentrated sulfuric acid can be completed.Not only operate extremely simple, ammonium sulfite conversion ratio is reachable
100%, and the energy consumption of air compressor can be saved.And by the sulfur dioxide recovery in tail gas into acid making system, thus
Improve the utilization rate of sulphuric acid output and sulphur.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the processing unit for desulfidation tail gas that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of structural schematic diagram of the processing unit for desulfidation tail gas that the embodiment of the present invention 2 provides；
1, sulfuric acid tail gas absorption tower；11, sulfuric acid tail gas absorbent tower body；111, ammonium hydroxide feed inlet；112, sulfur-containing smoke gas into
Material mouth；113, gas discharge outlet；114, discharge port；115, blower is fed；12, ammonium hydroxide feed pipe；13, sulfur-containing smoke gas feed pipe
Road；14, gas distribution tube；15, liquid distributor is fed；16, circulation line；161, circulation fluid import；162, circulation fluid exports；
163, ejector；164, lower liquid pipe, 165, circulating pump, 166, circulation pipe；2, reaction kettle；21, reaction kettle ontology；22, sulfurous acid
Ammonium salt solution feed inlet；23, concentrated sulfuric acid feed inlet；24, sulfur dioxide discharge port；25, ammonium sulfate discharge port；3, ammonium sulfate seperator
Structure；31, drying air fan；32, crystallizer；33, solid-liquid separator；34, drier；4, sulfur dioxide separating mechanism；41, titanium dioxide
Sulphur discharge nozzle；42, gas-liquid separator；43, return pipe.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the embodiment of the present invention provides a kind of processing unit of desulfidation tail gas, including sulfuric acid tail gas absorption tower 1,
Reaction kettle 2, ammonium sulfate separating mechanism 3, sulfur dioxide separating mechanism 4；
The sulfuric acid tail gas absorption tower 1 include sulfuric acid tail gas absorbent tower body 11, ammonium hydroxide feed pipe 12, sulfur-containing smoke gas into
Pipe material 13 and gas distribution tube 14 positioned at the bottom of the sulfuric acid tail gas absorbent tower body, the sulfuric acid tail gas absorption tower master
Body 11 be equipped with ammonium hydroxide feed inlet 111, sulfur-containing smoke gas feed inlet 112, gas discharge outlet 113 and discharge port 114, the ammonium hydroxide into
Material mouth 111 is connected with the ammonium hydroxide feed pipe 12, the sulfur-containing smoke gas feed inlet 112 and the sulfur-containing smoke gas feed pipe
13 are connected, and are uniformly provided with stomata on the gas distribution tube 14；
The reaction kettle 2 include reaction kettle ontology 21 and ammonium sulfite solution on the reaction kettle ontology into
Material mouth 22, concentrated sulfuric acid feed inlet 23, sulfur dioxide discharge port 24, ammonium sulfate discharge port 25, the ammonium sulfite solution feed inlet
22 are connected with the discharge port 114 on the sulfuric acid tail gas absorption tower；
The ammonium sulfate separating mechanism 3 includes drying air fan 31, and is sequentially connected logical crystallizer 32, solid-liquid separator
33 and drier 34,34 rear end of drier is equipped with the drying air fan 31, the outlet of the drying air fan 31 and crystallizer
32 are connected；
The sulfur dioxide separating mechanism 4 includes sulfur dioxide discharge nozzle 41, gas-liquid separator 42 and return pipe 43, described
Sulfur dioxide discharge nozzle 41 is connected with the sulfur dioxide discharge port 24 of the reaction kettle, the return pipe 43 and the sulfuric acid tail
The sulfur-containing smoke gas feed inlet 112 of aspiration tower 1 is connected.
The embodiment of the present invention provides a kind of processing unit of desulfidation tail gas, and the first step, sulfur-containing smoke gas and ammonium hydroxide are respectively through containing
Sulphur smoke feed pipeline 13 and ammonium hydroxide feeding pipe 12 flow into sulfuric acid tail gas absorption tower 1, and the solution of generation contains ammonium sulfate, Asia
Ammonium sulfate, ammonium bisulfite.
Second step, ammonium sulfite, ammonium bisulfite travel further into reaction kettle 2, decompose ammonium sulfite-Asia with the concentrated sulfuric acid
Ammonium hydrogen sulfate liquid obtains 100% sulfur dioxide gas and the ammonium sulfate containing steam:
(NH4)2SO3+H2SO4=(NH4)2SO4+SO2+H2O
2NH4HSO3+H2SO4=(NH4)2SO4+2SO2+H2O
Sulfurous acid acid ammonium is converted into ammonium sulfate without compressed air oxidation, and directlying adopt the conversion of one step of the concentrated sulfuric acid can be complete
At.Not only operate extremely simple, ammonium sulfite conversion ratio can save the energy consumption of air compressor up to 100%.
Third step, the ammonium sulfate that step 2 generates are separated in the ammonium sulfate separating mechanism 3, specifically
Ground, ammonium sulfate are sent to solid-liquid separator 33 by crystallizer 32, and isolated solid ammonium sulfate is dried in drier 34, i.e.,
Finished product sulfuric acid ammonium is obtained, commodity thiamine fertilizer is processed into；
The sulfur dioxide and vapor that the step 2 reacts released pass through the subsequent induced pipe of reaction kettle and air blower
Negative pressure extracted out simultaneously, the containing water vapor gas after separating using gas-liquid separator 42 passes through return pipe 43 and the sulfur-bearing
Smoke feed mouth 112 is connected.Thus, by the sulfur dioxide recovery in tail gas into acid making system, to improve sulphuric acid output
With the utilization rate of sulphur.
In the embodiment of the present invention, there are two the setting of reaction kettle, and volume is 14m3, reaction kettle be used as simultaneously measuring tank and point
Slot is solved to use.Material is FRP, bulge.
Optimize above-described embodiment, as shown in Figure 1, being equipped with charging blower 115 at the sulfur-containing smoke gas feed inlet 112.Blower
Gas is sent into the gas distribution tube 14 for being located at bottom in sulfuric acid tail gas absorption tower 1 by gas feed；On gas distribution tube 14
It is uniformly provided with stomata.Air is directly blasted into sulfuric acid tail gas absorption tower 1 using blower, and makes sulfuric acid using gas distribution tube 14
Gas distribution in tail gas absorber 1 is relatively uniform, and gas can be made to be evenly distributed in sulfuric acid tail gas absorption tower 1.Bubble warp
Stomata on gas distribution tube 14 enters in solution, and constantly rises, and carries out gas-liquid mass transfer with solution in uphill process, realizes
The oxidation of ammonium sulfite solution, improves reaction efficiency.
Optimize above-described embodiment, as shown in Figure 1, the lower section of the ammonium hydroxide feed inlet 111 on the sulfuric acid tail gas absorption tower 1 is set
There is charging liquid distributor 15.In order to enable from feed inlet 11 enter solution decline in sulfuric acid tail gas absorption tower 1 when and sulphur
Air in sour tail gas absorber 1 is adequately contacted, and is equipped with charging liquid distributor 10 in the lower section of feed inlet 11, can be made
Liquid is declined with the shape of droplet, increases the contact area of liquid-to-air, accelerates gas-liquid mass transfer.
Embodiment 2
As shown in Fig. 2, the embodiment of the present invention provides a kind of processing unit of desulfidation tail gas, on the basis of embodiment 1 also
Have the feature that the sulfuric acid tail gas absorption tower is additionally provided with circulation line 16, the circulation line 16 include ejector 163,
Lower liquid pipe 164, circulating pump 165, circulation pipe 166 and circulation fluid import 161 and circulation on the sour tail gas absorber
Liquid outlet 162, the circulation fluid outlet 162 are connected by the circulation pipe 166 with the ejector 163, the ejector
The 163 connection lower liquid pipes 164, the lower liquid pipe 164 protrude into the middle and lower part on the sulfuric acid tail gas absorption tower 1.
In order to increase oxidation efficiency, need to carry out cyclic oxidation, circulating pump 165 is by the liquid of 1 bottom of sulfuric acid tail gas absorption tower
Body by circulation pipe 166 be sent into ejector 163, ejector 163 have a vacuum chamber, further include inlet, liquid outlet and into
Port (not shown), when liquid enters ejector 163 from inlet, and by forming vacuum using high-speed liquid, from
The air inlet of ejector 163 sucks air, and gas-liquid mixed carries out gas-liquid mass transfer, oxidation reaction occurs, then pass through lower liquid pipe 164
Into the middle and lower part on sulfuric acid tail gas absorption tower 1.When gas-liquid mixture is flowed out from lower liquid pipe 164, gas-liquid separation, gas will
Bubble is formed, is risen in sulfuric acid tail gas absorption tower 1, gas-liquid mass transfer further occurs with the solution in sulfuric acid tail gas absorption tower 1
Reaction, makes oxygen be fully used.To sum up, using circulation line 16, cyclic oxidation, and benefit are carried out to ammonium sulfite solution
The vacuum formed when being sprayed at a high speed with liquid through ejector 163, new air is sucked from the air inlet of ejector 163, and gas-liquid is mixed
It closes, accelerates mass transfer between gas-liquid, so that the oxygen in air is fully utilized, improve reaction efficiency.
Embodiment 3
The embodiment of the invention provides a kind of processing methods of desulfidation tail gas, and the device more than includes the following steps:
Step 1, using ammonia as desulfurizing agent, come into full contact on sulfuric acid tail gas absorption tower 1 and sulfur-containing smoke gas gas-liquid, in tail gas
SO2With NH in depickling lean solution3Reaction generates the mixed solution of ammonium sulfite, ammonium bisulfite, ammonium sulfate, and the ammonia includes liquid
Ammonia, ammonium hydroxide or/and ammonium bicarbonate；
Step 2, the ammonium sulfite solution generated and the concentrated sulfuric acid carry out oxidation reaction in reaction kettle 2, and to obtain ammonium sulfate molten
Liquid, while releasing sulfur dioxide gas；
The ammonium sulfate that step 3, step 2 generate is sent to solid-liquid separator 33, isolated solid sulphuric acid by crystallizer
Ammonium is dried in ammonium sulfate drier 34, i.e. acquisition finished product sulfuric acid ammonium, is processed into commodity thiamine fertilizer；
Step 4, the step 2 react released sulfur dioxide and vapor by the subsequent induced pipe of reaction kettle and
The negative pressure of air blower is extracted out simultaneously, and the containing water vapor gas after separating using gas-liquid separator 42 passes through return pipe 43, contains
Sulphur smoke feed mouth 112 enters sulfuric acid tail gas absorption tower.
Further, in the step 1, for ammonia/sulphur than being by mol 1.5~2, gas/liquid ratio is 3000- by volume
4000。
Further, in the step 2, the concentration of the concentrated sulfuric acid is 98.3%-93%.
Further, in the step 3, the temperature of the hot fume is 100~160 DEG C.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of processing method of desulfidation tail gas, which comprises the steps of:
Step 1, using ammonia as desulfurizing agent, come into full contact on sulfuric acid tail gas absorption tower and sulfur-containing smoke gas gas-liquid, SO in tail gas2With
NH in depickling lean solution3Reaction generates the mixed solution of ammonium sulfite, ammonium bisulfite, ammonium sulfate, and the ammonia includes liquefied ammonia, ammonia
Water or/and ammonium bicarbonate；
Step 2, ammonium sulfite, bisulfite ammonium salt solution and the concentrated sulfuric acid generated carry out oxidation reaction in a kettle and obtain sulfuric acid
Ammonium salt solution, while releasing sulfur dioxide gas；
The ammonium sulfate that step 3, step 2 generate is sent to solid-liquid separator by crystallizer, and isolated solid ammonium sulfate is in sulphur
Sour ammonium drier is dried, i.e. acquisition finished product sulfuric acid ammonium, is processed into commodity thiamine fertilizer；
The sulfur dioxide and vapor that step 4, the step 2 react released pass through the subsequent induced pipe of reaction kettle and air blast
The negative pressure of machine is extracted out simultaneously, using the containing water vapor gas after gas-liquid separator separates by return pipe, sulfur-containing smoke gas into
Material mouth enters sulfuric acid tail gas absorption tower.
2. the processing method of desulfidation tail gas described in claim 1, which is characterized in that in the step 1, ammonia/sulphur ratio by mole
1.5~2 are calculated as, gas/liquid ratio is 3000-4000 by volume.
3. the processing method of desulfidation tail gas described in claim 1, which is characterized in that in the step 2, the concentrated sulfuric acid it is dense
Degree is 98.3%-93%.
4. the processing method of desulfidation tail gas described in claim 1, which is characterized in that in the step 3, the temperature of the hot fume
Degree is 100~160 DEG C.
5. device used in a kind of claim 1 the method, which is characterized in that including sulfuric acid tail gas absorption tower, reaction kettle, sulphur
Sour ammonium separating mechanism, sulfur dioxide separating mechanism；
The sulfuric acid tail gas absorption tower include sulfuric acid tail gas absorbent tower body, ammonium hydroxide feed pipe, sulfur-containing smoke gas feed pipe and
Gas distribution tube positioned at the bottom of the sulfuric acid tail gas absorbent tower body, the sulfuric acid tail gas absorbent tower body are equipped with ammonium hydroxide
Feed inlet, sulfur-containing smoke gas feed inlet, gas discharge outlet and discharge port, the ammonium hydroxide feed inlet are connected with the ammonium hydroxide feed pipe
Logical, the sulfur-containing smoke gas feed inlet is connected with the sulfur-containing smoke gas feed pipe, is uniformly provided with gas on the gas distribution tube
Hole；
The reaction kettle includes reaction kettle ontology and ammonium sulfite solution feed inlet on the reaction kettle ontology, dense
Sulfuric acid feed inlet, sulfur dioxide discharge port, ammonium sulfate discharge port, the ammonium sulfite solution feed inlet and the sulfuric acid tail gas are inhaled
The discharge port for receiving tower is connected；
The ammonium sulfate separating mechanism includes drying air fan, and is sequentially connected logical crystallizer, solid-liquid separator and drier,
The drier rear end is equipped with the drying air fan, and the outlet of the drying air fan is connected with crystallizer；
The sulfur dioxide separating mechanism includes sulfur dioxide discharge nozzle, gas-liquid separator and return pipe, and the sulfur dioxide goes out
Expects pipe is connected with the sulfur dioxide discharge port of the reaction kettle, the sulfur-bearing cigarette of the return pipe and the sulfuric acid tail gas absorption tower
Gas feed inlet is connected.
6. device as claimed in claim 5, which is characterized in that be equipped with charging blower at the sulfur-containing smoke gas feed inlet.
7. device as claimed in claim 5, it is characterised in that: the lower section of the ammonium hydroxide feed inlet on the sulfuric acid tail gas absorption tower
Equipped with charging liquid distributor.
8. device as claimed in claim 5, it is characterised in that: the sulfuric acid tail gas absorption tower is additionally provided with circulation line, described
Circulation line include ejector, lower liquid pipe, circulating pump, circulation pipe and circulation fluid on the sour tail gas absorber into
Mouth and circulation fluid outlet, the circulation fluid outlet are connected by the circulation pipe with the ejector, the ejector connection
The lower liquid pipe, the lower liquid pipe protrude into the middle and lower part on the sulfuric acid tail gas absorption tower.
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| CN201811317829.9A CN109499289A (en) | 2018-11-07 | 2018-11-07 | A kind of processing method and processing device of desulfidation tail gas |
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| CN201811317829.9A CN109499289A (en) | 2018-11-07 | 2018-11-07 | A kind of processing method and processing device of desulfidation tail gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639337A (en) * | 2019-11-01 | 2020-01-03 | 武汉青江化工黄冈有限公司 | SO based on sulphuric acid apparatus for producing2Wet gas extraction process |
| CN112047359A (en) * | 2020-09-17 | 2020-12-08 | 嘉施利（宜城）化肥有限公司 | Comprehensive utilization process for acid-making tail gas and sulfur-based compound fertilizer production |
| CN114053834A (en) * | 2020-08-05 | 2022-02-18 | 湖南中冶长天节能环保技术有限公司 | External circulation cleaning treatment method and system for cyanogen-containing SRG gas |
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| CN1408464A (en) * | 2002-09-09 | 2003-04-09 | 华东理工大学 | Removing and recovering process and device for SO2 in flue gas |
| CN1600410A (en) * | 2003-09-24 | 2005-03-30 | 北京国纬达环保科技有限公司 | Integration method for ammonia process of desulfurizing flue gas and multiple utilizing desulfurized products and equipment |
| US7695701B2 (en) * | 2008-03-07 | 2010-04-13 | Du Pont | Process for treating acid gas in staged furnaces with inter-stage heat recovery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1408464A (en) * | 2002-09-09 | 2003-04-09 | 华东理工大学 | Removing and recovering process and device for SO2 in flue gas |
| CN1600410A (en) * | 2003-09-24 | 2005-03-30 | 北京国纬达环保科技有限公司 | Integration method for ammonia process of desulfurizing flue gas and multiple utilizing desulfurized products and equipment |
| US7695701B2 (en) * | 2008-03-07 | 2010-04-13 | Du Pont | Process for treating acid gas in staged furnaces with inter-stage heat recovery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639337A (en) * | 2019-11-01 | 2020-01-03 | 武汉青江化工黄冈有限公司 | SO based on sulphuric acid apparatus for producing2Wet gas extraction process |
| CN110639337B (en) * | 2019-11-01 | 2024-03-26 | 武汉青江化工黄冈有限公司 | SO based on sulfuric acid apparatus for producing 2 Wet gas extraction process |
| CN114053834A (en) * | 2020-08-05 | 2022-02-18 | 湖南中冶长天节能环保技术有限公司 | External circulation cleaning treatment method and system for cyanogen-containing SRG gas |
| CN114053834B (en) * | 2020-08-05 | 2024-01-02 | 湖南中冶长天节能环保技术有限公司 | External circulation cleaning treatment method and system for cyanogen-containing SRG gas |
| CN112047359A (en) * | 2020-09-17 | 2020-12-08 | 嘉施利（宜城）化肥有限公司 | Comprehensive utilization process for acid-making tail gas and sulfur-based compound fertilizer production |
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Application publication date: 20190322 |