CN108159864A - H acid monosodium salt tail gas acid cleaning process - Google Patents
H acid monosodium salt tail gas acid cleaning process Download PDFInfo
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- CN108159864A CN108159864A CN201711219297.0A CN201711219297A CN108159864A CN 108159864 A CN108159864 A CN 108159864A CN 201711219297 A CN201711219297 A CN 201711219297A CN 108159864 A CN108159864 A CN 108159864A
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- Prior art keywords
- tail gas
- acid
- monosodium salt
- water scrubber
- cleaning process
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides a kind of H acid monosodium salt tail gas acid cleaning process, and in particular to H acid monosodium salt production technical field comprises the technical steps that：S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.The present invention, which has, saves cost, and tail-gas quality after raising processing discharges the advantages of more environmentally friendly.
Description
Technical field
The invention belongs to H acid monosodium salt production technical fields, and in particular to a kind of H acid monosodium salt tail gas acid cleaning process.
Background technology
H acid monosodium salt, entitled 1- amino-8-naphthols -3, the 6- disulfonate sodium of Chinese, general one crystallization water of band are
A kind of important dyestuff intermediate.H acid monosodium salt is such as available mainly for the production of acid dyes, direct dyes or reactive dye
In production acid fuchsin 6b, acid red G, directly Acid Black 10B, black, Reactive Brilliant Red K-2BP, active purple k-3r, reactive dark blue
K-R etc. more than 90 plants dyestuff, these dyestuffs are used for wool spinning, and the dyeing of cotton fabric has good effect；In addition, H acid monosodium salt is also
Available for producing drug.At present, H acid monosodium salt is mainly produced as follows：(1) naphthalene sulfonation obtains 1,3,6- naphthalene sulphurs
Acid；(2) 1,3,6- naphthalene trisulfonic acids nitrification generation 1- nitros -3,6,8- naphthalene trisulfonic acids, and nitrating mixture is made to take off nitrogen dioxide；
(3) nitrating mixture is neutralized with ammonium hydroxide；(4) three ammonium salt of neutralized reaction product nitro naphthalene trisulfonic acid restores, and is precipitated also with sulfuric acid and salt
Former acidizing product amino T acid；(5) amino T acid is transformed into sodium salt, alkali fusion, acid out obtain H acid monosodium salt.Existing nitrification work
Skill is 1,3,6- naphthalene trisulfonic acid of sulfonation material directly and nitric acid reaction obtains nitration product 1- nitros -3,6,8- naphthalene trisulfonic acids, nitre
Changing product needs to carry out in denitration and waits post processing, and when neutralization needs to add in ammonium hydroxide, do not participate in completely the ammonium hydroxide of neutralization reaction into
It needs to carry out pickling processes for tail gas ammonia.Existing vent gas treatment is passed directly into pickling tower and carries out pickling processes, can waste big
The acid of amount, production cost are higher.
Therefore, it is badly in need of a kind of saving cost, tail-gas quality after raising processing discharges more environmentally friendly H acid monosodium salt tail gas acid
Wash technique.
Invention content
The purpose of the present invention is being directed to existing vent gas treatment to be passed directly into pickling tower progress pickling processes, can waste a large amount of
Acid, the problems such as production cost is higher, provide a kind of H acid monosodium salt tail gas acid cleaning process, have and save cost, after raising processing
Tail-gas quality discharges the advantages of more environmentally friendly.
The present invention provides following technical solutions：
A kind of H acid monosodium salt tail gas acid cleaning process, comprises the technical steps that：
S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；
S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；
S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；
S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.
Preferably, washing temperature is 23-27 DEG C, within this temperature range, ammonia in the step S1 and step S2
Solubility in water is larger.
Preferably, the dilute sulfuric acid that pickle is 65-68% in the step S3.
Preferably, molecular sieve adsorption temp is 20-35 DEG C in the step S4.
Preferably, washing temperature is 25 DEG C in the step S1 and step S2.
According to《Emission standard for odor pollutants》(GB14554-1993) regulation, exhaust tube height are 15 meters, ammonia row
High-volume for 4.9kg/h, through present invention process treated tail gas, the discharge capacity of ammonia is 3.5- when exhaust tube height is 15 meters
4.3kg/h。
The beneficial effects of the invention are as follows：
1st, tail gas of the invention is first washed twice, is removed most ammonia in tail gas, is reduced making for pickle
Dosage saves cost.
2nd, acid cleaning process of the invention carries out pickling after washing twice, is further reduced the content of ammonia in tail gas, carries again
The quality of tail gas after high disposal, makes discharge more environmentally friendly.
3rd, tail gas of the present invention after washing and pickling is adsorbed again by molecular sieve, further reduces ammonia in tail gas
Content improves the tail-gas quality being discharged into air.
Specific embodiment
Embodiment 1
A kind of H acid monosodium salt tail gas acid cleaning process, comprises the technical steps that：
S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；
S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；
S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；
S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.
Specifically, washing temperature is 23 DEG C in the step S1 and step S2.
Specifically, pickle is 68% dilute sulfuric acid in step S3.
Specifically, molecular sieve adsorption temp is 35 DEG C in step S4.
Tail gas after 1 process of the present embodiment, the discharge capacity of ammonia is 4.3kg/h when exhaust tube height is 15 meters.
Embodiment 2
A kind of H acid monosodium salt tail gas acid cleaning process, comprises the technical steps that：
S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；
S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；
S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；
S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.
Specifically, washing temperature is 25 DEG C in the step S1 and step S2.
Specifically, pickle is 65% dilute sulfuric acid in step S3.
Specifically, molecular sieve adsorption temp is 20 DEG C in step S4.
Tail gas after 2 process of the present embodiment, the discharge capacity of ammonia is 3.5kg/h when exhaust tube height is 15 meters.
Embodiment 3
A kind of H acid monosodium salt tail gas acid cleaning process, comprises the technical steps that：
S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；
S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；
S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；
S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.
Specifically, washing temperature is 27 DEG C in the step S1 and step S2.
Specifically, pickle is 67% dilute sulfuric acid in step S3.
Specifically, molecular sieve adsorption temp is 25 DEG C in step S4.
Tail gas after 3 process of the present embodiment, the discharge capacity of ammonia is 3.9kg/h when exhaust tube height is 15 meters.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example modifies or carries out equivalent replacement to which part technical characteristic.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1.H acid mono-sodium salt tail gas acid cleaning process, which is characterized in that comprise the technical steps that：
S1, it the tail gas after H acid monosodium salt neutralization reaction is passed through the first water scrubber washes；
S2, the tail gas discharged from the first water scrubber is washed into the second water scrubber；
S3, the tail gas discharged from the second water scrubber is entered into the progress pickling of pickling tower again；
S4, it will finally be discharged after over-molecular sieve adsorbs from the tail gas discharged through overpickling tower.
2. H acid monosodium salt tail gas acid cleaning process according to claim 1, which is characterized in that the step S1 and the step
Washing temperature is 23-27 DEG C in rapid S2.
3. H acid monosodium salt tail gas acid cleaning process according to claim 1, which is characterized in that pickle in the step S3
Dilute sulfuric acid for 65-68%.
4. H acid monosodium salt tail gas acid cleaning process according to claim 1, which is characterized in that molecular sieve in the step S4
Adsorption temp is 20-35 DEG C.
5. H acid monosodium salt tail gas acid cleaning process according to claim 2, which is characterized in that the step S1 and the step
Washing temperature is 25 DEG C in rapid S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219297.0A CN108159864A (en) | 2017-11-28 | 2017-11-28 | H acid monosodium salt tail gas acid cleaning process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219297.0A CN108159864A (en) | 2017-11-28 | 2017-11-28 | H acid monosodium salt tail gas acid cleaning process |
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| Publication Number | Publication Date |
|---|---|
| CN108159864A true CN108159864A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711219297.0A Pending CN108159864A (en) | 2017-11-28 | 2017-11-28 | H acid monosodium salt tail gas acid cleaning process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368766A (en) * | 2019-08-07 | 2019-10-25 | 绍兴电力设备有限公司 | A kind of aluminium bar workshop soot processing device and technique |
| CN112275116A (en) * | 2020-10-10 | 2021-01-29 | 鞍钢化学科技有限公司 | Tail gas washing system and method for cooling tank area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908894A (en) * | 2012-11-09 | 2013-02-06 | 湖南高安新材料有限公司 | Ammonia tail gas treatment device and method for preparing nitride for electronic industry |
| CN102989266A (en) * | 2011-09-13 | 2013-03-27 | 杨友发 | Ammonia gas (ammonium sulfate crystallization) treatment technology system |
| 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
- 2017-11-28 CN CN201711219297.0A patent/CN108159864A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989266A (en) * | 2011-09-13 | 2013-03-27 | 杨友发 | Ammonia gas (ammonium sulfate crystallization) treatment technology system |
| CN102908894A (en) * | 2012-11-09 | 2013-02-06 | 湖南高安新材料有限公司 | Ammonia tail gas treatment device and method for preparing nitride for electronic industry |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368766A (en) * | 2019-08-07 | 2019-10-25 | 绍兴电力设备有限公司 | A kind of aluminium bar workshop soot processing device and technique |
| CN112275116A (en) * | 2020-10-10 | 2021-01-29 | 鞍钢化学科技有限公司 | Tail gas washing system and method for cooling tank area |
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Application publication date: 20180615 |
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