CN108097018A - Exhaust gas treating method prepared by H acid monosodium salt - Google Patents
Exhaust gas treating method prepared by H acid monosodium salt Download PDFInfo
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- CN108097018A CN108097018A CN201711206703.XA CN201711206703A CN108097018A CN 108097018 A CN108097018 A CN 108097018A CN 201711206703 A CN201711206703 A CN 201711206703A CN 108097018 A CN108097018 A CN 108097018A
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- acid
- exhaust gas
- monosodium salt
- treating method
- gas treating
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses exhaust gas treating methods prepared by a kind of H acid monosodium salt, are related to technical field of waste gas treatment, relieving haperacidity tail gas is sufficiently mixed with ammonium hydroxide, and the SO2 in tail gas is reacted with ammonia, generate ammonium sulfite；With the oxygen in tail gas oxidation reaction occurs for ammonium sulfite, generates ammonium sulfate and enters crystallized region；The crystalline mother solution recycled after ammonia sulfate crystal is spare；It in H acid separation kettles, adds in the crystalline mother solution that step S3 is obtained and is stirred, add the sulfuric acid and H soda acid melts needed for isolation.The present invention can cause purified H acid monosodium salt to prepare tail gas and reach discharging standards requirement, at low cost.
Description
Technical field
The present invention relates to exhaust gas treating methods prepared by technical field of waste gas treatment more particularly to a kind of H acid monosodium salt.
Background technology
H acid monosodium salt is that one kind is clear crystal, is slightly soluble in cold water, is dissolved in the alkaline solutions such as soda ash and caustic soda, is weight
The naphthalene series dye intermediate wanted at present, mainly has extraction, absorption for the processing method of such naphthalene series dye Intermediate Wastewater
Method, concentration method, carbonization and burning method, membrane separation process, chemical oxidization method, electrolysis and biochemical process etc..Such most of waste water
Not easily biological-degradable containing a large amount of difficult degradation larger molecular organics, should not be handled directly using biochemical process.
The content of the invention
In order to solve the above technical problems, the present invention provides exhaust gas treating method prepared by H acid monosodium salt.
The present invention adopts the following technical scheme that：
Exhaust gas treating method prepared by H acid monosodium salt, comprises the following steps:
S1, relieving haperacidity tail gas and ammonium hydroxide are sufficiently mixed, the SO2 in tail gas is reacted with ammonia, generates ammonium sulfite；
Oxidation reaction occurs for the oxygen in S2, ammonium sulfite and tail gas, generates ammonium sulfate and enters crystallized region；
Crystalline mother solution after S3, recycling ammonia sulfate crystal is spare；
S4, in H acid separation kettles, add in the obtained crystalline mother solutions of step S3 and be stirred, add the sulphur needed for isolation
Acid and H soda acid melts.
Preferably, before step S1, purified treatment is carried out to H sour waste gas first.
Preferably, the method for the purified treatment is method purification and the profit using sub-sectional cooling condensation and concentrated sulfuric acid washing
With the tail gas of H acid productions.
Preferably, the H soda acids melt in the step S4 is subjected to isolation operation, filters, washs after isolation, is dry
Obtain H acid finished products.
Preferably, the isolation temperature is at 30-90 DEG C.
Preferably, in the step S4, sulfuric acid is first added in, then heats up and is slowly added to H soda acid melts.
Preferably, the temperature of the heating is 20-30 DEG C.
Preferably, the concentration of sulfuric acid is 30-50% in the step S4.
The invention has the advantages that:The present invention can cause purified tail gas reaches discharging standards will
It asks, it is at low cost.
Specific embodiment
Exhaust gas treating method prepared by the H acid monosodium salt of the present invention, comprises the following steps:
S1, relieving haperacidity tail gas and ammonium hydroxide are sufficiently mixed, the SO2 in tail gas is reacted with ammonia, generates ammonium sulfite；
Oxidation reaction occurs for the oxygen in S2, ammonium sulfite and tail gas, generates ammonium sulfate and enters crystallized region；
Crystalline mother solution after S3, recycling ammonia sulfate crystal is spare；
S4, in H acid separation kettles, add in the obtained crystalline mother solutions of step S3 and be stirred, add the sulphur needed for isolation
Acid and H soda acid melts.
Before step S1, purified treatment is carried out to H sour waste gas first.
The method of the purified treatment is that H acid lifes are purified and utilized using the method for sub-sectional cooling condensation with concentrated sulfuric acid washing
The tail gas of production.
H soda acids melt in the step S4 is subjected to isolation operation, filtering after isolation, washing, dry H acid into
Product.
The isolation temperature is at 30-90 DEG C.
In the step S4, sulfuric acid is first added in, then heats up and is slowly added to H soda acid melts.
The temperature of the heating is 20-30 DEG C.
The concentration of sulfuric acid is 30-50% in the step S4.
The present invention can cause purified H acid monosodium salt to prepare tail gas and reach discharging standards requirement, at low cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, although with reference to foregoing reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to foregoing each implementation
Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (8)
- Exhaust gas treating method prepared by 1.H acid mono-sodium salt, which is characterized in that comprise the following steps:S1, relieving haperacidity tail gas and ammonium hydroxide are sufficiently mixed, the SO2 in tail gas is reacted with ammonia, generates ammonium sulfite；Oxidation reaction occurs for the oxygen in S2, ammonium sulfite and tail gas, generates ammonium sulfate and enters crystallized region；Crystalline mother solution after S3, recycling ammonia sulfate crystal is spare；S4, in H acid separation kettles, add in the obtained crystalline mother solutions of step S3 and be stirred, add the sulfuric acid and H needed for isolation Soda acid melt.
- 2. exhaust gas treating method prepared by H acid monosodium salt according to claim 1, which is characterized in that before step S1, Purified treatment is carried out to H sour waste gas first.
- 3. exhaust gas treating method prepared by H acid monosodium salt according to claim 2, which is characterized in that the purified treatment Method be using sub-sectional cooling condensation and the concentrated sulfuric acid washing method purify and using H acid production tail gas.
- 4. exhaust gas treating method prepared by H acid monosodium salt according to claim 1, which is characterized in that by the step S4 In H soda acids melt carry out isolation operation, filtering after isolation, washing, dry H acid finished products.
- 5. exhaust gas treating method prepared by H acid monosodium salt according to claim 4, which is characterized in that the isolation temperature At 30-90 DEG C.
- 6. exhaust gas treating method prepared by H acid monosodium salt according to claim 1, which is characterized in that in the step S4, Sulfuric acid is first added in, then heats up and is slowly added to H soda acid melts.
- 7. exhaust gas treating method prepared by H acid monosodium salt according to claim 6, which is characterized in that the temperature of the heating It spends for 20-30 DEG C.
- 8. exhaust gas treating method prepared by H acid monosodium salt according to claim 1, which is characterized in that in the step S4 The concentration of sulfuric acid is 30-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206703.XA CN108097018A (en) | 2017-11-27 | 2017-11-27 | Exhaust gas treating method prepared by H acid monosodium salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206703.XA CN108097018A (en) | 2017-11-27 | 2017-11-27 | Exhaust gas treating method prepared by H acid monosodium salt |
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| CN108097018A true CN108097018A (en) | 2018-06-01 |
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| CN201711206703.XA Pending CN108097018A (en) | 2017-11-27 | 2017-11-27 | Exhaust gas treating method prepared by H acid monosodium salt |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL327489A1 (en) * | 1997-07-19 | 1999-02-01 | Lurgi Lentjes Bischoff Gmbh | Method of removing sulphur dioxide from combustion gases, flue gases emitted by power and waste incineration plants |
| CN101785964A (en) * | 2010-03-02 | 2010-07-28 | 浙江菲达环保科技股份有限公司 | Method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and system thereof |
| CN104086017A (en) * | 2014-06-13 | 2014-10-08 | 通辽市龙盛化工有限公司 | Treatment method of H acid separation waste water |
| CN104906935A (en) * | 2015-05-29 | 2015-09-16 | 中冶焦耐工程技术有限公司 | Acid-making tail gas purification process and acid-making tail gas purification device |
| CN105536478A (en) * | 2016-01-16 | 2016-05-04 | 浙江奇彩环境科技股份有限公司 | Resourceful treatment method and system for H acid production tail gas |
-
2017
- 2017-11-27 CN CN201711206703.XA patent/CN108097018A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL327489A1 (en) * | 1997-07-19 | 1999-02-01 | Lurgi Lentjes Bischoff Gmbh | Method of removing sulphur dioxide from combustion gases, flue gases emitted by power and waste incineration plants |
| CN101785964A (en) * | 2010-03-02 | 2010-07-28 | 浙江菲达环保科技股份有限公司 | Method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and system thereof |
| CN104086017A (en) * | 2014-06-13 | 2014-10-08 | 通辽市龙盛化工有限公司 | Treatment method of H acid separation waste water |
| CN104906935A (en) * | 2015-05-29 | 2015-09-16 | 中冶焦耐工程技术有限公司 | Acid-making tail gas purification process and acid-making tail gas purification device |
| CN105536478A (en) * | 2016-01-16 | 2016-05-04 | 浙江奇彩环境科技股份有限公司 | Resourceful treatment method and system for H acid production tail gas |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180601 |
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| RJ01 | Rejection of invention patent application after publication |