CN104208994B - Sodium metabisulfite exhaust gas desulfurization process - Google Patents
Sodium metabisulfite exhaust gas desulfurization process Download PDFInfo
- Publication number
- CN104208994B CN104208994B CN201410418232.9A CN201410418232A CN104208994B CN 104208994 B CN104208994 B CN 104208994B CN 201410418232 A CN201410418232 A CN 201410418232A CN 104208994 B CN104208994 B CN 104208994B
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- tail gas
- tower
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 title claims abstract description 19
- 235000010262 sodium metabisulphite Nutrition 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 12
- 230000023556 desulfurization Effects 0.000 title claims abstract description 12
- 229940001584 sodium metabisulfite Drugs 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 13
- 239000012071 phase Substances 0.000 claims description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005201 scrubbing Methods 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 238000002835 absorbance Methods 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- WBZKQQHYRPRKNJ-UHFFFAOYSA-N disulfurous acid Chemical compound OS(=O)S(O)(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 1
- 239000004540 pour-on Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910004879 Na2S2O5 Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a sodium metabisulfite exhaust gas desulfurization process. Sodium metabisulfite is synthesized by three-stage series absorption, namely SO2 firstly enters a first-stage absorption synthesis kettle; a reaction exhaust gas is conveyed to a second-stage absorption synthesis kettle; an unreacted exhaust gas is conveyed to a third-stage absorption synthesis kettle, and then is conveyed to an exhaust gas absorption system; and the synthesized exhaust gas which is absorbed by the three stages of reaction kettles, and centrifugal exhaust gas are synthesized on an exhaust gas master pipe, and the synthesized gas enters a two-stage exhaust gas packing absorption tower to be absorbed. By adopting the method disclosed by the invention, the target of desulfurization of the sodium metabisulfite exhaust gas can be achieved, the environmental pollution is alleviated, the energy consumption is low, and the treatment method is simple.
Description
Technical field
The present invention relates to sulfur removal technology field, mainly a kind of sodium pyrosulfite tail gas desulfurization technique.
Background technology
Directly discharge after producing the most washings using soda of pyrosulfurous acid process for producing sodium at home.Fail what is sponged
SO2 can cause surrounding enviroment pollution, the wasting of resources.It is advanced using " thtee-stage shiplock absorption " synthesis sodium pyrosulfite, i.e. SO2 at present
Enter first order absorption synthesis reactor, reaction end gas send into two grades of absorption synthesis reactors, and unreacted tail gas enters back into feeding three-level and absorbs conjunction
Into kettle, unreacted tail gas delivers to tail gas absorbing system, qualified discharge again.Reaction mother liquors at different levels reach adverse current after certain concentration
And under, certain Concentraton gradient is kept, maintains system response stable, also improve the absorbance of SO2.Occur in reactor as follows
Reaction：2SO2+Na2CO3→Na2S2O5+CO2.
Following reaction is produced in absorption process：
2SO2+Na2CO3+H2O→2NaHSO3+CO2
2NaHSO3+Na2CO3→2Na2SO3+H2O+CO2
Na2SO3+SO2+H2O→2NaHSO3
As the Na in absorption mother liquor2SO3、NaHSO3When concentration reaches certain value, preparing alkali kettle is delivered to pump, recycle,
While the fresh soda ash solution of supplement.
The content of the invention
The technical problem to be solved is to provide a kind of sodium pyrosulfite tail gas desulfurization technique, and which can reach place
The purpose of reason sodium pyrosulfite tail gas desulfurization, reduces the pollution to environment, and energy consumption is low, and processing method is simple.
To solve above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of sodium pyrosulfite tail gas desulfurization technique, it is characterised in that：The SO2 gases come from purification section are passed through containing soda
Reaction is carried out in feed liquid reactor and generates sodium pyrosulfite, reactor is using thtee-stage shiplock reaction composition, the gas that purification section comes
Body is introduced into the first order reaction kettle containing soda feed liquid, and 50～60 DEG C of reaction control temperature, terminal PH are 5, and after reaction, tail gas is entered
Containing soda feed liquid, secondary response kettle, 50～60 DEG C of reaction control temperature, terminal PH are 6, and after reaction, tail gas is entered back into containing soda
The third-order reaction kettle of feed liquid, 50～60 DEG C of reaction control temperature, terminal PH are 6.8, and soda material is added from three-level, then cascade flow
Enter second level reactor, first order reactor, sulfur dioxide is sufficiently absorbed, improve the absorbance of SO2.Third-order reaction
Kettle tail gas out (unreacted completely SO2 gases) with centrifugation tail gas (micro SO2 gases) and in synthesis tail gas house steward, from
The heart enters the synthesis tail gas scrubbing tower of two-stage series connection, using one-level soda absorption+one-level liquid caustic soda packed tower counter-current absorption, tail gas Jing
Empty after alkali cleaning, after the alkali liquor pH value of scrubbing tower reaches requirement, send into alkali-prepared tank and match somebody with somebody alkali, return sodium pyrosulfite synthesis system.
Described tail gas is absorbed using two-stage tail gas packed absorber:One-level soda absorption+one-level liquid caustic soda packed tower absorbs,
(SO2) absorption efficiency be more than 99.5%, pollutant (SO2) qualified discharge.
Every grade of tail gas packed absorber internal structure top is wire mesh demister, and middle part is gas-liquid distributor, and bottom is to fill out
Material structure, packed tower is the mass transfer apparatus using the filler in tower as contact member between gas-liquid two-phase.The tower body of packed tower is one
Vertical type cylinder, bottom are equipped with supporting plate, and filler is placed on support plate in the way of whole block.Install and fill out in the top of filler
Material pressing plate, in case be raised air-flow blowing.Liquid is sprayed on filler from tower top Jing liquid distribution troughs, and is flowed along filler surface
Under.Gas is sent into from bottom of towe, Jing after distribution device in gas-fluid (minor diameter tower does not typically set distribution device in gas-fluid) distribution, with liquid is in
Adverse current continues through the space of packing layer, and on filler surface, gas-liquid two-phase close contact carries out mass transfer.Packed tower belongs to continuous
Contact gas-liquid mass transfer (contact) equipment, along tower height consecutive variations, under normal operating condition, gas phase is continuous phase, liquid phase for two phase compositions
For dispersion phase.Packed tower has production capacity big, and separation efficiency is high, and pressure drop is little, and liquid holdup is little, the advantages of operating flexibility is big.
It is an advantage of the invention that：
The present invention can reach the purpose for processing sodium pyrosulfite tail gas desulfurization, reduce the pollution to environment, and energy consumption is low,
Processing method is simple.
Description of the drawings
Fig. 1 is the process chart of the present invention.
Specific embodiment
Referring to Fig. 1, the SO2 gases come from purification section are passed through in the reactor of feed liquid containing soda carries out the burnt sulfurous of reaction generation
Sour sodium, reactor are introduced into the first order reaction kettle containing soda feed liquid using thtee-stage shiplock reaction composition, the gas that purification section comes,
50～60 DEG C of reaction control temperature, terminal PH are 5, and after reaction, tail gas is entered containing soda feed liquid, secondary response kettle, reaction controlling
50～60 DEG C of temperature, terminal PH are 6, and after reaction, tail gas enters back into the third-order reaction kettle containing soda feed liquid, reaction control temperature 50
～60 DEG C, terminal PH is 6.8, and soda material is added from three-level, then cascade flow enters second level reactor, first order reactor, makes
Sulfur dioxide is sufficiently absorbed, and improves the absorbance of SO2.Third-order reaction kettle tail gas out (unreacted completely SO2 gas
Body) with centrifugation tail gas (micro SO2 gases) and in synthesis tail gas house steward, centrifugation is washed into the synthesis tail gas of two-stage series connection
Tower, using one-level soda absorption+one-level liquid caustic soda packed tower counter-current absorption, tail gas is emptied Jing after alkali cleaning, the alkali liquor pH value of scrubbing tower
After reaching requirement, send into alkali-prepared tank and match somebody with somebody alkali, return sodium pyrosulfite synthesis system.
Claims (1)
1. a kind of sodium pyrosulfite tail gas desulfurization technique, it is characterised in that：From the SO that purification section comes2Gas is passed through material containing soda
Reaction is carried out in liquid reactor and generates sodium pyrosulfite, reactor is using thtee-stage shiplock reaction composition, the gas that purification section comes
The first order reaction kettle containing soda feed liquid is introduced into, 50～60 DEG C of reaction control temperature, terminal pH are 5, tail gas is entered and contained after reaction
The secondary response kettle of soda feed liquid, 50～60 DEG C of reaction control temperature, terminal pH are 6, and after reaction, tail gas enters back into material containing soda
The third-order reaction kettle of liquid, 50～60 DEG C of reaction control temperature, terminal pH are 6.8, and soda material is added from three-level, then cascade flow enters
Second level reactor, first order reactor, make sulfur dioxide sufficiently be absorbed, and improve the absorbance of SO2；
Unreacted completely SO in third-order reaction kettle tail gas out2Gas and SO micro in centrifugation tail gas2Gas in synthesis
Engine manifold, synthesis tail gas scrubbing tower of the centrifugation into two-stage series connection, using one-level soda absorption+one-level liquid caustic soda filler tower counter-flow
Absorb, tail gas is emptied Jing after alkali cleaning, after the alkali liquor pH value of scrubbing tower reaches requirement, send into alkali-prepared tank and match somebody with somebody alkali, return pyrosulfurous acid
Sodium synthesis system；
A kind of described sodium pyrosulfite tail gas desulfurization technique, described tail gas are absorbed using two-stage tail gas packed absorber:One
Level soda absorption+one-level liquid caustic soda packed tower absorbs, SO2Absorption efficiency is more than 99.5%, pollutant SO2Qualified discharge；
A kind of described sodium pyrosulfite tail gas desulfurization technique, every grade of tail gas packed absorber internal structure top is silk screen foam removal
Device, middle part are gas-liquid distributors, and bottom is filling-material structure, and packed tower is using the filler in tower as contact member between gas-liquid two-phase
Mass transfer apparatus；The tower body of packed tower is vertical cylinder always, and bottom is equipped with supporting plate, and filler is placed in the way of whole block
On support plate；Hold-down grid is installed in the top of filler, in case be raised air-flow blowing；Liquid is sprayed from tower top Jing liquid distribution troughs
Pour on filler, and flow down along filler surface；Gas is sent into from bottom of towe, and Jing after distribution device in gas-fluid distribution, minor diameter tower is general
Distribution device in gas-fluid is not set, the space of packing layer is continued through with liquid in adverse current, on filler surface, gas-liquid two-phase is connect closely
Touching carries out mass transfer；Packed tower belongs to continuous contact gas-liquid mass transfer (contact) equipment, two phase compositions along tower height consecutive variations, in normal operating
Under state, gas phase is continuous phase, and liquid phase is dispersion phase；Packed tower has production capacity big, and separation efficiency is high, and pressure drop is little, holds liquid
Measure little, the big advantage of operating flexibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410418232.9A CN104208994B (en) | 2014-08-22 | 2014-08-22 | Sodium metabisulfite exhaust gas desulfurization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410418232.9A CN104208994B (en) | 2014-08-22 | 2014-08-22 | Sodium metabisulfite exhaust gas desulfurization process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104208994A CN104208994A (en) | 2014-12-17 |
| CN104208994B true CN104208994B (en) | 2017-05-10 |
Family
ID=52091139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410418232.9A Expired - Fee Related CN104208994B (en) | 2014-08-22 | 2014-08-22 | Sodium metabisulfite exhaust gas desulfurization process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104208994B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202055B (en) * | 2018-02-13 | 2021-08-20 | 鞍钢股份有限公司 | A kind of cleaning method of desulfurization tower upper section and acid-making tail gas alkali washing tower |
| CN108744907A (en) * | 2018-06-27 | 2018-11-06 | 湖北鼎创泰裕科技有限公司 | A kind of exhaust gas treating method and processing unit containing sulfur dioxide |
| CN109970081A (en) * | 2019-03-22 | 2019-07-05 | 扬州康龙环保工程有限公司 | A method of sodium pyrosulfite is prepared using coking sulphur cream |
| CN211393883U (en) * | 2019-12-13 | 2020-09-01 | 南京工业大学 | System for production sodium metabisulfite |
| CN110960961A (en) * | 2019-12-18 | 2020-04-07 | 北京中航泰达环保科技股份有限公司 | Resource recycling system and method for activated coke regeneration gas |
| CN111153418B (en) * | 2020-01-21 | 2024-03-01 | 北京中航泰达环保科技股份有限公司 | System and method for preparing multiple salts by recycling active coke regenerated gas |
| CN118255327A (en) * | 2024-04-30 | 2024-06-28 | 北方矿业有限责任公司 | Method for co-producing sodium pyrosulfite and sulfur dioxide suitable for tail gas containing sulfur dioxide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740362A (en) * | 1987-01-05 | 1988-04-26 | Central Illinois Public Service Company | Regeneration and use of SO2 gas scrubber liquid in dual alkali system |
| CN102659142A (en) * | 2012-04-17 | 2012-09-12 | 伍立君 | Preparation device and preparation method of sodium pyrosulfite and anhydrous sodium sulphite |
| CN203006961U (en) * | 2013-01-20 | 2013-06-19 | 伍立君 | Device for preparing sodium metabisulfite and anhydrous sodium sulfite |
-
2014
- 2014-08-22 CN CN201410418232.9A patent/CN104208994B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740362A (en) * | 1987-01-05 | 1988-04-26 | Central Illinois Public Service Company | Regeneration and use of SO2 gas scrubber liquid in dual alkali system |
| CN102659142A (en) * | 2012-04-17 | 2012-09-12 | 伍立君 | Preparation device and preparation method of sodium pyrosulfite and anhydrous sodium sulphite |
| CN203006961U (en) * | 2013-01-20 | 2013-06-19 | 伍立君 | Device for preparing sodium metabisulfite and anhydrous sodium sulfite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104208994A (en) | 2014-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104208994A (en) | Sodium metabisulfite exhaust gas desulfurization process | |
| CN204684940U (en) | A kind of hydrogen peroxide hollow-spraying-tower desulphurization system | |
| CN103495329B (en) | A kind ofly remove hydrogen sulfide and the technique of Recovered sulphur | |
| CN103223292A (en) | Ammonia process flue gas treatment method for acidic tail gas and device | |
| CN103113928B (en) | Optimization process of vacuum potassium carbonate method coke oven gas desulfurization and equipment thereof | |
| CN108079762A (en) | Flue gas desulphurization system and the method that flue gas desulfurization is carried out using the flue gas desulphurization system | |
| CN101254392B (en) | Energy-saving sodium sulfite circulating desulfurization device and method | |
| CN105944544A (en) | Petrochemical acidic tail gas treatment system | |
| CN106345136A (en) | Crystallization tower for gas-gas reaction | |
| CN102604687A (en) | Column and machine combined gas desulphurization process device and desulphurization method thereof | |
| CN104971601B (en) | Acid gas vertical reactor and processing method | |
| CN104971597B (en) | A kind of sour gas produces NaHS process and device | |
| CN109351126A (en) | Sulphur-containing exhaust gas processing method | |
| CN202146695U (en) | Gas-phase silicon dioxide tail gas treatment system | |
| CN109232171B (en) | A kind of method for completely removing acid substance in crude vinyl chloride gas | |
| CN204619717U (en) | A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation | |
| CN107261789B (en) | Ammonia desulphurization system and method for high-sulfur flue gas | |
| CN202881200U (en) | Desulfurizing device for gas of finery | |
| CN211864522U (en) | Flue gas treatment system | |
| CN203200228U (en) | Self-circulating desulfurizer | |
| CN208287776U (en) | A kind of flue gas desulphurization system | |
| CN202590610U (en) | Desulphurization device through circulating absorption of liquid ammonia | |
| CN205886572U (en) | Petrochemical acidic tail gas processing system | |
| CN214182532U (en) | A device for solving the emission of greenhouse gases from catalytic hydrolysis of urea | |
| CN103301718A (en) | Device capable of recovering and concentrating sulfur dioxide in tail gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20210822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |