CN201930696U - High-efficiency device for removing acidic gas in smoke gas or coal gas - Google Patents
High-efficiency device for removing acidic gas in smoke gas or coal gas Download PDFInfo
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- CN201930696U CN201930696U CN2011200448950U CN201120044895U CN201930696U CN 201930696 U CN201930696 U CN 201930696U CN 2011200448950 U CN2011200448950 U CN 2011200448950U CN 201120044895 U CN201120044895 U CN 201120044895U CN 201930696 U CN201930696 U CN 201930696U
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- gas
- depickling
- acid
- acidproof
- coal gas
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Abstract
The utility model provides a high-efficiency device for removing acidic gas in smoke gas or coal gas, which is characterized in that: alkaline Al(OH)3 or Fe(OH)3 granules are used as an acid-removing agent for removing HCl or HF gas in the smoke gas or the coal gas; the high-efficiency device for removing the acidic gas in the smoke gas or the coal gas comprises an acid-resisting temperature-reducing device, an acid-resisting cloth-bag dust-removing system, a first-stage acid-removing system, a second-stage acid-removing system and a draught fan; and the smoke gas or the coal gas sequentially passes through the acid-resisting temperature-reducing device, the acid-resisting cloth-bag dust-removing system, the first-stage acid-removing system and the second-stage acid-removing system of the device, so that not only can the temperature-reducing dust removal of the smoke gas or the coal gas be realized, but also more importantly, the HCl or HF gas in the smoke gas or the coal gas is efficiently removed to achieve the purposes of cleanly discharging and preventing combustion equipment from being corroded.
Description
Technical field
The utility model relates to a kind of acid gas purifying device, and the particularly a kind of flue gas of hot stove of incinerator and ore deposit etc. or high-level cleaner of coal gas depickling of being applicable to belongs to environmental technology field.
Background technology
The modern industry device (as the hot stove of incinerator and ore deposit etc.) aborning, easily produce and contain a certain amount of SO
2, HCl, HF or H
2The flue gas of sour gas such as S or coal gas contain CO, CO usually simultaneously
2If these sour gas directly are disposed to atmosphere, will cause serious environmental to pollute, also can etching apparatus in the high temperature heat transfer process.For protecting environment and preventing from equipment corrosion from must these sour gas be carried out purified treatment.Flue gas just can obtain clean gas, thereby reach discharge standard by behind the deacidifying device; Coal gas just can access clean fuel gas after handling through depickling, can realize clean combustion, not only guarantees the discharging cleaning, and can not corrode boiler plant.
Common acid gas purifying device adopts the alkali lye acid stripping method, and alkaline solution is NaOH or Ca (OH)
2, the deacidification agent of these addings often also can with CO
2Reaction promptly takes place: 2NaOH+CO
2=Na
2CO
3+ H
2O or Ca (OH)
2+ CO
2=CaCO
3+ H
2The side reaction of O, consume a large amount of effective depickling composition in the alkali lye, these side reactions have reduced deacidification efficiency, it is excessive to cause deacidification agent to consume, and the necessary frequent updating of alkali lye, therefore need a kind of high-performance device that removes sour gas in flue gas or the coal gas of design, the flue gas or the coal gas of generation such as the hot stove of incinerator and ore deposit is carried out thorough depickling processing.
Summary of the invention
The purpose of this utility model is to provide a kind of flue gas of the hot stove of incinerator and ore deposit etc. or high-level cleaner of coal gas depickling of being applicable to, makes that the flue gas after handling reaches discharging standards, and the coal gas after perhaps handling can be realized clean burning.
The purpose of this utility model is achieved through the following technical solutions:
Remove the high-performance device of sour gas in flue gas or the coal gas, it is characterized in that: adopt alkaline Al (OH)
3Or Fe (OH)
3Particle removes HCl or HF gas in flue gas or the coal gas as deacidification agent, deacidification agent not can with the CO in flue gas or the coal gas
2Side reaction takes place.
Remove the high-performance device of sour gas in flue gas or the coal gas, its feature also is: comprise acidproof heat sink, acidproof bag-type dust removal system, one-level depickling system, secondary depickling system, air-introduced machine.
Described acidproof heat sink, acidproof bag-type dust removal system, one-level depickling system, secondary depickling system, air-introduced machine are connected in series by flue gas or gas piping successively.
Described acidproof heat sink is made up of water-cooled, air cooling device or heat exchanger; Flue gas or coal gas by described sour gas source emission enter acidproof heat sink.
Described acidproof bag-type dust removal system is made up of acidproof sack cleaner and ash bucket; Link to each other with acidproof heat sink by flue gas or gas piping; Described acidproof sack cleaner links to each other with ash bucket, and the dust that filters out is sent into ash bucket.
Described one-level depickling system is made up of one-level depickling packed tower, acid-proof pump, water liquid pool, rich solution treating apparatus; The flue gas or the coal gas of being discharged by described acidproof bag-type dust removal system enter one-level depickling system by pipeline, absorb the thick depickling of realization by water liquid in this one-level depickling packed tower;
Described one-level depickling packed tower, acid-proof pump, water liquid pool, rich solution treating apparatus connect and compose a circulatory system successively by circulation line, and the circulation of water liquid is arranged in this circulatory system; Described water liquid pool also links to each other with the rich solution treating apparatus, handles rich solution by adding alkaline solution in the rich solution treating apparatus.
Described secondary depickling system is made up of secondary depickling fixed bed reactors, regenerating unit, ammoniacal liquor pond, aqua ammonia pump and liquid storage tank;
Described secondary depickling fixed bed reactors are by Al (OH)
3Or Fe (OH)
3Grain bed is formed; The flue gas or the coal gas of being discharged by described one-level depickling system are delivered to secondary depickling system by pipeline, HCl in flue gas or the coal gas and HF and Al (OH)
3Or Fe (OH)
3Particle reacts and generates AlCl
3, FeCl
3, AlF
3, FeF
3To realize smart depickling.
Because total some moisture that exist in flue gas or the coal gas are as Al (OH)
3Or Fe (OH)
3Particle absorbs CO
2Generate Al
2(CO
3)
3Or Fe
2(CO
3)
3The time, they will meet the instant water decomposition, discharge CO again
2, so alkaline Al (OH)
3Or Fe (OH)
3Particle can not absorb CO simultaneously when absorbing sour gas HCl or HF
2, this has guaranteed the efficient utilization of deacidification agent.
As Al (OH)
3Or Fe (OH)
3Absorb sour gas and become AlCl
3, FeCl
3, AlF
3, FeF
3After, in regenerating unit, adopt ammoniacal liquor to make Al (OH)
3Or Fe (OH)
3Regeneration.
Described air-introduced machine links to each other with secondary depickling system by pipeline, and cleaning flue gases after handling or coal gas are discharged; Cleaning flue gases is by smoke stack emission, and cleaning coal gas enters gas piping and is used for burning or other purposes.
Effect of the present utility model is: by with flue gas or coal gas successively by acidproof heat sink, acidproof bag-type dust removal system, one-level depickling system, secondary depickling system, not only can realize the cooling dedusting of flue gas or coal gas, and the more important thing is HCl or the HF gas that efficiently removes in flue gas or the coal gas, reach the cleaning discharging and prevent the purpose that combustion apparatus corrodes.
Description of drawings
Fig. 1 is the schematic diagram that removes the high-performance device of sour gas in flue gas or the coal gas.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the schematic diagram that removes the high-performance device of sour gas in flue gas or the coal gas.Among the figure, this high-performance device that removes sour gas in flue gas or the coal gas comprises: acidproof heat sink 1, acidproof bag-type dust removal system 2, one-level depickling system 3, secondary depickling system 4, air-introduced machine 5.This acidproof heat sink 1, acidproof bag-type dust removal system 2, one-level depickling system 3, secondary depickling system 4, air-introduced machine 5 are connected in series by flue gas or gas piping successively.This air-introduced machine 5 is arranged on the end of flue gas or gas piping, is used to discharge flue gas after being purified or coal gas.Under the drive of air-introduced machine 5, make flue gas or coal gas enter the high-performance device that this removes sour gas flue gas or the coal gas from sour gas body source 6, and along flue gas or gas piping successively by above-mentioned acidproof heat sink 1, acidproof bag-type dust removal system 2, one-level depickling system 3, secondary depickling system 4 lower the temperature, dedusting and depickling handle.
This acidproof heat sink 1 is reduced to flue gas or temperature of gas below 150 ℃ by water-cooled, air cooling device or heat exchanger.This acidproof heat sink 1 can produce steam or hot water, arrives the purpose of UTILIZATION OF VESIDUAL HEAT IN.The heat exchanger surface of this acidproof heat sink 1 scribbles corrosion-inhibiting coating, can prevent the corrosion of heat exchanger.
This acidproof bag-type dust removal system 2 is made up of acidproof sack cleaner and ash bucket, can remove the dust in flue gas or the coal gas, makes that the dust concentration in flue gas or the coal gas is lower than 10mg/Nm
3, reach the environmental protection standard of fume emission or the specification requirement of gas-fired.This acidproof sack cleaner 21 adopts acidproof cloth to make cloth bag.These acidproof bag-type dust removal system 2 arranged beneath have ash bucket 22, are used to store dust.
This one-level depickling system 3 is made up of one-level depickling packed tower 31, acid-proof pump 32, water liquid pool 33 and rich solution treating apparatus 34.
Described flue gas or gas piping link to each other with one-level depickling packed tower 31, and flue gas after the dedusting or coal gas are introduced from one-level depickling packed tower 31 belows, and the water liquid that flows down with one-level depickling packed tower 31 tops fully contacts.Because HCl or HF gas dissolve readily in water, so one-level depickling packed tower 31 can reach the purpose of preliminary depickling.Water liquid after the depickling enters water liquid pool 33, and water liquid is squeezed into one-level depickling packed tower 31 tops by acid-proof pump 32, realizes the circulation of water liquid.When the acidic gas concentration in the water liquid is higher, make water liquid enter rich solution treating apparatus 34, at this moment can be by in rich solution treating apparatus 34, adding NaOH or Ca (OH)
2During solution comes and acid solution.
This secondary depickling system 4 is made up of secondary depickling fixed bed reactors 41, regenerating unit 42, ammoniacal liquor pond 43, aqua ammonia pump 44 and liquid storage tank 45.
Described flue gas or gas piping link to each other with secondary depickling fixed bed reactors 41, flue gas after the preliminary depickling or coal gas are introduced from secondary depickling fixed bed reactors 41 belows, with the alkaline Al (OH) of secondary depickling fixed bed reactors 41 inside
3Or Fe (OH)
3Particle reacts, and generates AlCl
3Or FeCl
3(is example to remove HCl) reaches the purpose of efficient depickling.As Al (OH)
3Or Fe (OH)
3After particle fully absorbs sour gas, make AlCl
3Or FeCl
3Enter regenerating unit 42, the ammoniacal liquor in the ammoniacal liquor pond 43 is squeezed in the regenerating unit 42 by aqua ammonia pump 44, realize Al (OH)
3Regeneration.Al after the regeneration (OH)
3Can add secondary depickling fixed bed reactors 41 again after treatment, realize recycling.The NH that contains from regenerating unit 42 outflows
4The Cl rich solution enters in the liquid storage tank 45, can realize NH through handling
4The separation of Cl, NH
4Cl can be used as fertilizer.
Described flue gas or gas piping link to each other with air-introduced machine 5, and flue gas after the efficient depickling or coal gas are drawn from secondary depickling fixed bed reactors 41 tops, enter atmosphere.
In sum, the high-performance device that removes sour gas in flue gas or the coal gas that the utility model is designed.This device by with flue gas or coal gas successively by acidproof heat sink 1, acidproof bag-type dust removal system 2, one-level depickling system 3, secondary depickling system 4, not only can realize the cooling dedusting of flue gas or coal gas, and the more important thing is HCl or the HF gas that efficiently removes in flue gas or the coal gas, reach the cleaning discharging and prevent the purpose that combustion apparatus corrodes.
Claims (9)
1. remove the high-performance device of sour gas in flue gas or the coal gas, it is characterized in that: the high-performance device that removes sour gas in flue gas or the coal gas, its feature also is: comprise acidproof heat sink, acidproof bag-type dust removal system, one-level depickling system, secondary depickling system, air-introduced machine
Described acidproof heat sink, acidproof bag-type dust removal system, one-level depickling system, secondary depickling system, air-introduced machine are connected in series by flue gas or gas piping successively.
2. acid gas removal device as claimed in claim 1 is characterized in that: described acidproof heat sink is made up of water-cooled, air cooling device or heat exchanger; Flue gas or coal gas by described sour gas source emission enter acidproof heat sink.
3. acid gas removal device as claimed in claim 1 is characterized in that: described acidproof bag-type dust removal system links to each other with acidproof heat sink by flue gas or gas piping; Described acidproof sack cleaner links to each other with ash bucket, and the dust that filters out is sent into ash bucket.
4. acid gas removal device as claimed in claim 1 is characterized in that: described one-level depickling system is made up of one-level depickling packed tower, acid-proof pump, water liquid pool, rich solution treating apparatus; The flue gas or the coal gas of being discharged by described acidproof sack cleaner enter one-level depickling packed tower by pipeline, absorb the thick depickling of realization by water liquid in this packed tower.
5. acid gas removal device as claimed in claim 4 is characterized in that: described one-level depickling packed tower, acid-proof pump, water liquid pool, rich solution treating apparatus connect and compose a circulatory system successively by circulation line, and the circulation of water liquid is arranged in this circulatory system; Described water liquid pool also links to each other with the rich solution treating apparatus, handles rich solution by adding alkaline solution in the rich solution treating apparatus.
6. acid gas removal device as claimed in claim 1 is characterized in that: described secondary depickling system is made up of secondary depickling fixed bed reactors, regenerating unit, ammoniacal liquor pond, aqua ammonia pump and liquid storage tank.
7. secondary depickling as claimed in claim 6 system, it is characterized in that: the depickling particle of described secondary depickling fixed bed reactors is by Al (OH)
3Or Fe (OH)
3Form, to realize smart depickling.
8. secondary depickling as claimed in claim 6 system is characterized in that: as Al (OH)
3Or Fe (OH)
3After the absorption sour gas becomes chloride or fluoride, in regenerating unit, adopt ammoniacal liquor to make Al (OH)
3Or Fe (OH)
3Regeneration.
9. acid gas removal device as claimed in claim 1 is characterized in that: described air-introduced machine links to each other with secondary depickling fixed bed reactors by pipeline, and cleaning flue gases after handling or coal gas are discharged; Cleaning flue gases is by smoke stack emission, and cleaning coal gas enters gas piping and is used for burning or other purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200448950U CN201930696U (en) | 2011-02-23 | 2011-02-23 | High-efficiency device for removing acidic gas in smoke gas or coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200448950U CN201930696U (en) | 2011-02-23 | 2011-02-23 | High-efficiency device for removing acidic gas in smoke gas or coal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201930696U true CN201930696U (en) | 2011-08-17 |
Family
ID=44442236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200448950U Expired - Fee Related CN201930696U (en) | 2011-02-23 | 2011-02-23 | High-efficiency device for removing acidic gas in smoke gas or coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201930696U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993111A (en) * | 2014-05-19 | 2014-08-20 | 首钢总公司 | Device and method for carrying out dry dehydrochlorination on blast furnace gas |
| CN112725558A (en) * | 2020-12-23 | 2021-04-30 | 苏州航明环保节能科技有限公司 | Converter gas dry-method dust removal device |
-
2011
- 2011-02-23 CN CN2011200448950U patent/CN201930696U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993111A (en) * | 2014-05-19 | 2014-08-20 | 首钢总公司 | Device and method for carrying out dry dehydrochlorination on blast furnace gas |
| CN103993111B (en) * | 2014-05-19 | 2016-04-27 | 首钢总公司 | A kind of device and method of blast furnace gas dry dehydrochlorination |
| CN112725558A (en) * | 2020-12-23 | 2021-04-30 | 苏州航明环保节能科技有限公司 | Converter gas dry-method dust removal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20180223 |