CN104667743A - Petrochemical waste gas deodorization chemical absorbent - Google Patents
Petrochemical waste gas deodorization chemical absorbent Download PDFInfo
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- CN104667743A CN104667743A CN201310643806.8A CN201310643806A CN104667743A CN 104667743 A CN104667743 A CN 104667743A CN 201310643806 A CN201310643806 A CN 201310643806A CN 104667743 A CN104667743 A CN 104667743A
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Abstract
The invention discloses a petrochemical waste gas deodorization chemical absorbent. The absorbent consists of the following components by weight percent: 14 to 17 percent of sodium hydroxide, 1 to 2 percent of sodium chlorate, 3 to 5 percent of sodium hypochlorite, 1 to 2 percent of sulfonated cobalt phthalocyanine, 1 to 3.5 percent of isopropanolamine, 0.5 to 2.5 percent of a desulphurization agent, 0.7 to 2.8 percent of a corrosion inhibitor, 1 to 3.3 percent of ethylene-vinyl acetate and the balance of water. The weight percent of sodium hydroxide is 15 percent, and the sum of the weight percent of sodium hypochlorite is 5 percent. The corrosion inhibitor is organic phosphoric acid and polycarboxylic acid, the weight percent of organic phosphoric acid is 1 percent, and the weight percent of polycarboxylic acid is 0.7 percent. The desulphurization agent is vanadic acid, tannin extract, ethanolamine, ethyl alcohol or hydroquinone. The petrochemical waste gas deodorization chemical absorbent is used for desulphurizing and purifying petrochemical waste gas in the presence of sulfonated cobalt phthalocyanine as a catalyst. Different desulphurization agents are designed for different sulfides, the absorbent has advantages of non-combustion, non-explosion, non-toxicity, harmlessness, high pertinence, safety, reliability and the like, and the waste gas treated by adopting the absorbent can reach and can be lower than the odor pollution emission standard in China.
Description
Technical field
The present invention relates to a kind of petrochemical industry waste gas deodorization chemical absorbent.
Background technology
Air is that lazy with the necessary condition of existence, adult needs inspiration tens kg of air per kg of water evaporated average every day to the mankind, than many several times of the requirement of food and water.Whether fresh the air of inspiration is, clean, with we everyone closely bound up.Contaminated air enters human body, can cause systemic disease or other diseases such as breathing, cardiovascular, neural.Odor pollution causes discomfort by the sense of smell of people, and even affect the one sensation public hazards of health.The smelly molecule of pernicious and olfact is very low volatility is escaped to air, and stimulate the sense of smell of people to cause strongly unhappy, expiratory dyspnea, apocleisis is felt sick, digestive function goes down, and irritated insomnia, operating efficiency reduce.Most foul gas is again noxious material, enters people and knows from experience damaged brain nerve, upsets metabolism, brings out various disease.In recent years, with regard to occur frequency, the scope involved and harm degree with regard to, odor pollution has become large public hazards.
Especially the processing of fossil fuel and use, over the years, air pollution more and more becomes the focal issue of social concerns, containing sulphur in oil, can give out stench in the process such as processing, storing, contaminated environment and affect health.Along with the raising of national requirements for environmental protection and people's environmental consciousness, petroleum chemical enterprise takes odor treatment measure, generally adopt alkali (ammonia) liquid absorption process at present, namely the sulfide in waste gas is removed with 30% sodium hydrate aqueous solution or ammonia solution, alkali and hydrogen sulfide generation chemical reaction (2NaoH+H2S → Na2S+2H2O), thus by hydrogen sulfide removing in odorant.And existing alkali absorption method desulfurization to there is clearance low, hydrogen sulfide removal rate only has 70%; Desulfurization kind is single, can only remove hydrogen sulfide, cannot remove organic sulfurs such as mercaptan, thioether, methyl disulfides; After depriving hydrogen sulphide, product vulcanized sodium instability (easily decomposing), easily causes secondary pollution during Solid state fermentation; Alkali absorption agent is short for service time, and effective storage life only has 3 months; Another Alkali absorption agent has corrosion to equipment, affects capacity utilization etc.Therefore it is low that the aqueous slkali absorbent that current offensive odor treatment device adopts has clearance, removes kind single, and after process, waste gas can not qualified discharge, odor treatment is left to the defects such as hidden danger.
Summary of the invention
The object of the present invention is to provide a kind of petrochemical industry waste gas deodorization chemical absorbent, it is high that it has desulfurization degree, the advantage that effect is long and safe and reliable.
The present invention is achieved like this, absorbent is made up of the component of following weight proportion: NaOH 14-17%, sodium chlorate 1-2%, clorox 3-5%, sulfonated phthalocyanine cobalt 1-2%, isopropanolamine 1-3.5%, desulfurizing agent 0.5-2.5%, corrosion inhibiter 0.7-2.8%, ethene-vinyl acetate fat 1-3.3%, remaining ingredient is water.
The weight proportion of described NaOH is 15%
The weight proportion of described clorox is 5%.
Described corrosion inhibiter is organic phosphoric acid and polycarboxylic acids, and wherein organic phosphoric acid weight proportion is 1%, and the weight proportion of polycarboxylic acids is 0.7%.
Described desulfurizing agent is vanadic acid, tannin extract, monoethanolamine, ethanol or hydroquinones.
A kind of petrochemical industry waste gas deodorization chemical absorbent application is under the effect of sulfonated phthalocyanine cobalt as catalyst, and carry out desulfurizing and purifying to petrochemical industry waste gas, its reaction equation is:
(1)CH
3SO
3H→（CH
3）
2S
2
Under the effect of alkaline solution:
(2)H
2S+2NaOH→Na
2S+2H
2O
(3)CH
3SH+NaOH→CH
3SNa
2+H2O
(4)(CH
3)S+3NaOCl→(CH
3)
2SO
3+NaCl
(5)(CH
3)
2S
2+5NaOCl→2CH
3SO
3H+5NaCl。
Technique effect of the present invention is: the present invention can for different sulfide, devise different desulfurizing agents, this absorbent have do not fire not quick-fried, nontoxic, with strong points, the advantage such as safe and reliable, it can not only remove inorganic sulfur, can also remove organic sulfur, improve reaction speed and conversion ratio, sulfide moment is by absorption oxidation; To the oxidation further such as sulfide and organic sulfur (methyl sulphur and methyl disulfide) under catalyst and multiple desulfurizing agent effect, improve desulfurization degree, after the process of this absorbent, in waste gas, hydrogen sulfide removal rate is greater than 99%, mercaptan, thioether clearance are greater than 90%, organic sulfur clearance is greater than 85%, after treatment tail gas reach and lower than country " odor pollution discharge standard ".
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further elaborated;
Embodiment one, absorbent is made up of the component of following weight proportion: NaOH 14%, sodium chlorate 1%, clorox 4%, sulfonated phthalocyanine cobalt 1%, isopropanolamine 2%, desulfurizing agent 1.5%, corrosion inhibiter 1.7%, ethene-vinyl acetate fat 1.7% and water 73.1%.Described corrosion inhibiter is organic phosphoric acid and polycarboxylic acids, and wherein organic phosphoric acid weight proportion is 1%, and the weight proportion of polycarboxylic acids is 0.7%.Wherein desulfurizing agent be vanadic acid, to stupid diphenol, tannin extract, monoethanolamine or ethanol, vanadic acid removal of mercaptans thioether, monoethanolamine depriving hydrogen sulphide, ethanol and to stupid diphenol and tannin extract removal of organic sulfur,
Catalyst title is 888 desulphurization catalysts, and a main point composition is sulfonated phthalocyanine cobalt, and carrying out desulfurizing and purifying to petrochemical industry waste gas, its reaction equation is:
(1)CH
3SO
3H→（CH
3）
2S
2
Under the effect of alkaline solution:
(2)H
2S+2NaOH→Na
2S+2H
2O
(3)CH
3SH+NaOH→CH
3SNa
2+H2O
(4)(CH
3)S+3NaOCl→(CH
3)
2SO
3+NaCl
(5)(CH
3)
2S
2+5NaOCl→2CH
3SO
3H+5NaCl。
The absorbent of above-mentioned formula is utilized to purify 1 ten thousand stere sour water tank tail gas deodorizing, in use after one month, measure and import and export concentration, measurement result is as table 1, the alkali concn measured in absorbent by titration is 12%, is far smaller than the critical value of inefficacy alkali concn 5%.
Table 1
Embodiment two, absorbent is made up of the component of following weight proportion: NaOH 15%, sodium chlorate 2%, clorox 6%, sulfonated phthalocyanine cobalt 2%, isopropanolamine 3.5%, desulfurizing agent 2.5%, corrosion inhibiter 2.8%, ethene-vinyl acetate fat 1% and water 65.2%.Described corrosion inhibiter is organic phosphoric acid and polycarboxylic acids, and wherein organic phosphoric acid weight proportion is 1%, and the weight proportion of polycarboxylic acids is 0.7%.Wherein desulfurizing agent be vanadic acid, to stupid diphenol, tannin extract, monoethanolamine or ethanol, vanadic acid removal of mercaptans thioether, monoethanolamine depriving hydrogen sulphide, ethanol and to stupid diphenol and tannin extract removal of organic sulfur,
Catalyst title is 888 desulphurization catalysts, and a main point composition is sulfonated phthalocyanine cobalt, and carrying out desulfurizing and purifying to petrochemical industry waste gas, its reaction equation is:
(1)CH
3SO
3H→（CH
3）
2S
2
Under the effect of alkaline solution:
(2)H
2S+2NaOH→Na
2S+2H
2O
(3)CH
3SH+NaOH→CH
3SNa
2+H2O
(4)(CH
3)S+3NaOCl→(CH
3)
2SO
3+NaCl
(5)(CH
3)
2S
2+5NaOCl→2CH
3SO
3H+5NaCl。
The absorbent of above-mentioned formula is utilized to purify 1 ten thousand stere sour water tank tail gas deodorizing, in use after two months, measure and import and export concentration, the clearance of hydrogen sulfide, methyl mercaptan, methyl sulfide and methyl disulfide all reaches more than 95%, and be 11.5% by the alkali concn that titration is measured in absorbent, be far smaller than the critical value of inefficacy alkali concn 5%.
Embodiment three, absorbent is made up of the component of following weight proportion: NaOH 17%, sodium chlorate 1.5%, clorox 5%, sulfonated phthalocyanine cobalt 1.5%, isopropanolamine 1%, desulfurizing agent 0.5%, corrosion inhibiter 0.7%, ethene-vinyl acetate fat 3.3% and water 69.5%.Described corrosion inhibiter is organic phosphoric acid and polycarboxylic acids, and wherein organic phosphoric acid weight proportion is 1%, and the weight proportion of polycarboxylic acids is 0.7%.Wherein desulfurizing agent be vanadic acid, to stupid diphenol, tannin extract, monoethanolamine or ethanol, vanadic acid removal of mercaptans thioether, monoethanolamine depriving hydrogen sulphide, ethanol and to stupid diphenol and tannin extract removal of organic sulfur.
Catalyst title is 888 desulphurization catalysts, and a main point composition is sulfonated phthalocyanine cobalt, and carrying out desulfurizing and purifying to petrochemical industry waste gas, its reaction equation is:
(1)CH
3SO
3H→（CH
3）
2S
2
Under the effect of alkaline solution:
(2)H
2S+2NaOH→Na
2S+2H
2O
(3)CH
3SH+NaOH→CH
3SNa
2+H2O
(4)(CH
3)S+3NaOCl→(CH
3)
2SO
3+NaCl
(5)(CH
3)
2S
2+5NaOCl→2CH
3SO
3H+5NaCl。
The absorbent of above-mentioned formula is utilized to purify 1 ten thousand stere sour water tank tail gas deodorizing, in use after three months, measure and import and export concentration, the clearance of hydrogen sulfide, methyl mercaptan, methyl sulfide and methyl disulfide all reaches more than 93.5%, and be 10% by the alkali concn that titration is measured in absorbent, be far smaller than the critical value of inefficacy alkali concn 5%.
Claims (6)
1. a petrochemical industry waste gas deodorization chemical absorbent, it is characterized in that, described absorbent is made up of the component of following weight proportion: NaOH 14-17%, sodium chlorate 1-2%, clorox 3-5%, sulfonated phthalocyanine cobalt 1-2%, isopropanolamine 1-3.5%, desulfurizing agent 0.5-2.5%, corrosion inhibiter 0.7-2.8%, ethene-vinyl acetate fat 1-3.3%, remaining ingredient is water.
2. a kind of petrochemical industry waste gas deodorization chemical absorbent as claimed in claim 1, is characterized in that the weight proportion of described NaOH is 15%.
3. a kind of petrochemical industry waste gas deodorization chemical absorbent as claimed in claim 1, it is characterized in that, the weight proportion of described clorox is 5%.
4. a kind of petrochemical industry waste gas deodorization chemical absorbent as claimed in claim 1, it is characterized in that, described corrosion inhibiter is organic phosphoric acid and polycarboxylic acids, and wherein organic phosphoric acid weight proportion is 1%, and the weight proportion of polycarboxylic acids is 0.7%.
5. a kind of petrochemical industry waste gas deodorization chemical absorbent as claimed in claim 1, it is characterized in that, described desulfurizing agent is vanadic acid, tannin extract, monoethanolamine, ethanol or hydroquinones.
6. a kind of petrochemical industry waste gas deodorization chemical absorbent application as claimed in claim 1, it is characterized in that, described application is: under the effect of sulfonated phthalocyanine cobalt as catalyst, carries out desulfurizing and purifying to petrochemical industry waste gas, and its reaction equation is:
(1)CH
3SO
3H→（CH
3）
2S
2
Under the effect of alkaline solution:
(2)H
2S+2NaOH→Na
2S+2H
2O
(3)CH
3SH+NaOH→CH
3SNa
2+H2O
(4)(CH
3)S+3NaOCl→(CH
3)
2SO
3+NaCl
(5)(CH
3)
2S
2+5NaOCl→2CH
3SO
3H+5NaCl。
Priority Applications (1)
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|---|---|---|---|
| CN201310643806.8A CN104667743A (en) | 2013-12-03 | 2013-12-03 | Petrochemical waste gas deodorization chemical absorbent |
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|---|---|---|---|
| CN201310643806.8A CN104667743A (en) | 2013-12-03 | 2013-12-03 | Petrochemical waste gas deodorization chemical absorbent |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178943A (en) * | 2016-08-05 | 2016-12-07 | 中海石油舟山石化有限公司 | A kind of inorganic agent removing sulfide in coked waste water Volatile Gas and processing method thereof |
| CN115193239A (en) * | 2022-07-04 | 2022-10-18 | 江西雄瓷科技有限公司 | Preparation method of composite liquid desulfurizer |
-
2013
- 2013-12-03 CN CN201310643806.8A patent/CN104667743A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178943A (en) * | 2016-08-05 | 2016-12-07 | 中海石油舟山石化有限公司 | A kind of inorganic agent removing sulfide in coked waste water Volatile Gas and processing method thereof |
| CN115193239A (en) * | 2022-07-04 | 2022-10-18 | 江西雄瓷科技有限公司 | Preparation method of composite liquid desulfurizer |
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Application publication date: 20150603 |