CN102337165B - Application of waste liquid of AOS sulfonation electrostatic precipitation in preparing coal water slurry additive - Google Patents
Application of waste liquid of AOS sulfonation electrostatic precipitation in preparing coal water slurry additive Download PDFInfo
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- CN102337165B CN102337165B CN201110100794.5A CN201110100794A CN102337165B CN 102337165 B CN102337165 B CN 102337165B CN 201110100794 A CN201110100794 A CN 201110100794A CN 102337165 B CN102337165 B CN 102337165B
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Abstract
The invention relates to application of waste liquid of AOS sulfonation electrostatic precipitation in preparing a coal water slurry additive, specifically to application of waste liquid obtained by carrying out electrostatic precipitation on tail gas generated in the process of AOS sulfonation in preparing the coal water slurry additive. The invention aims to provide a novel method of treating a by-product of AOS sulfonation. The AOS sulfonation by-product contains a great amount of sulfuric acid and organic acid, making it difficult to purify the by-product, and direct discharge of the by-product poses great pollution to environment. In the invention, the by-product is used for preparing the coal water slurry additive, thereby mitigating environmental protection pressure and creating economic benefits.
Description
Technical field
The present invention relates to the liquid waste disposal application method that the application, particularly AOS sulfonated tail gas of some by products in the sulfonation process of AOS produce in static demist process.
Background technology
In the sulfonation process of AOS, have some by products and generate.Adopt the AOS of SO 3 sulfonated explained hereafter, the tail gas producing from sulfonation operating unit enters the electrostatic precipitator of exhaust treatment system, unreacted sulfurous gas, the sulfur trioxide gas containing in tail gas and the small droplets that contains various ingredients, through the processing of electrostatic precipitator, are brought together and just produce the thick liquid with irritating smell that color is more black.This liquid is mixed and is formed by gas chromatography and inorganics, and in spent acid, mineral acid generally accounts for 20% left and right, and all the other are the organism such as sultone, oversulfonate thing.Separate comparatively difficulty, be difficult to be used.And be strongly-acid, big for environment pollution, the producer of the Shi Ge sulfonation always difficult problem but not solving urgently to be resolved hurrily.
Summary of the invention
Object of the present invention aims to provide a kind of application method and can effectively solve tail gas in AOS sulfonation process and process through electrostatic precipitator the processing problem of the waste liquid producing, and the processing cost that also can save waste material, turns waste into wealth.
Application method of the present invention is: the tail gas in AOS sulfonation process is processed the waste liquid producing for the preparation of slurries additive agent through electrostatic precipitator.
Application method of the present invention comprises the following steps: it is soluble in water that the tail gas in AOS sulfonation process processes through electrostatic precipitator the waste liquid producing; Add PH conditioning agent, defoamer, visbreaking agent and stablizer, stir; To pH8～10, obtain additive.
The comparatively preferred application method of the present invention is, 25～30% AOS waste liquid; 3～10% pH adjusting agent; 0.02～0.03% defoamer; 0～0.5% visbreaking agent paratoluenesulfonic acid sodium salt; 1.5～2.0% stablizer Xylo-Mucine; 60～70% clear water, above unit is mass percent.
Concrete preparation process is:
(a) electrostatic precipitator of exhaust treatment system will be entered from the tail gas of sulfonation operating unit generation, the unreacted sulfurous gas containing in tail gas, sulfur trioxide gas and the small droplets that contains various ingredients pass through the processing of electrostatic precipitator, are brought together and just produce the thick liquid with irritating smell that color is more black; Be that waste liquid is soluble in water by this thick liquid;
(b) by soluble in water PH conditioning agent, add defoamer, visbreaking agent paratoluenesulfonic acid sodium salt and stablizer Xylo-Mucine;
(c) solution in (b) is slowly added in (a) to low rate mixing;
(d) add water stir leave standstill, obtain pH 8～10 finished products.
PH adjusting agent in above method can be selected from calcium hydroxide, calcium carbonate, sodium carbonate or calcium oxide.
Defoamer can be polysiloxane oil.
In the solution of the present invention, can, by adding defoamer, reduce the foam producing in mixing process, reduce the viscosity of coal water slurry by visbreaking agent, improve mobility, be the stability in order to improve coal water slurry by stablizer.
Slurries additive agent of the present invention can be made into finite concentration and add in coal dust, also can directly add.The addition of slurries additive agent of the present invention is comparatively preferably 0.3%～0.7% of butt coal dust weight.What butt coal dust represented is that a certain proportion of rough coal powder particles mixes with fine breeze particle, makes the particle diameter of pulverized coal particle be bimodal distribution, and what particle diameter was less than 74 μ m is no less than 75%.Raw coal can derive from Shenhua colliery, Shandong Yan Kuang, Aug. 1st colliery, Shandong, Pang Zhuan colliery, Xuzhou, colliery, Datong etc.
Coal water slurry is the coal-based fluid cleaning fuel rising the eighties in last century, and it can have good mobility and stability as oily, can pumping, and atomization and stable burning, be a kind of more satisfactory for oily Coal Clean fuel.The coal water slurry with industrial application value will have high density, low viscosity and satisfactory stability.There are above these performances, in the time of slurrying, must add a small amount of additive.Therefore, the performance of additive is the principal element of the important parameters such as the viscosity, stability, concentration and the cost that affect coal water slurry.And slurries additive agent preparation method provided by the invention prepares coal water slurry with AOS sulfonation by product, solve the processing problem of pollutent.The paste consistency of making is high, has good stability and mobility, in preparation high-performance slurry, greatly reduces cost.
The present invention aims to provide a kind of novel method of the AOS of processing sulfonation by product.AOS sulfonation by product contains a large amount of sulfuric acid and organic acid, is difficult to carry out purification processes, directly discharges environmental pollution very large.The present invention is the preparation for slurries additive agent by this by product, has created economic benefit in alleviating environmental protection pressure.The present invention not only provides a kind of Pollutant Treatment to utilize method, and also preparing slurries additive agent for Cheap highly effective provides effective way.
Outstanding beneficial effect of the present invention is also embodied in:
1. utilize industrial waste acid slurries additive agent processed, with low cost, and reduced the discharge of pollutent;
2. the slurry stability of making is good, generally deposits after one week without obvious sediment.Stir once weekly, deposit after one month without obvious sediment;
3. can coordinate with other additive and be suitable for, reduce the usage quantity of this additive, cost-saving.
4. application method of the present invention is simple, easy to operate, and step is all carried out at normal temperatures and pressures, and equipment requirements is not high.
Embodiment
Below in conjunction with embodiment, the present invention being described in more detail, below is only preferred embodiment of the present invention, can not limit scope of the present invention with this.The equalization generally done according to the present patent application the scope of the claims changes and decorates, and all should still belong in the scope that patent of the present invention contains.
Embodiment 1
Step is as follows:
1. the tail gas producing from sulfonation operating unit is entered to the electrostatic precipitator of exhaust treatment system, the unreacted sulfurous gas containing in tail gas, sulfur trioxide gas and the small droplets that contains various ingredients pass through the processing of electrostatic precipitator, are brought together and just produce the thick liquid with irritating smell that color is more black; Be that waste liquid is dissolved in a small amount of water by this thick liquid;
2. pH adjusting agent is dissolved in a small amount of water, adds defoamer, visbreaking agent and stablizer, stir;
3. the solution in (2) is slowly added in (1), add surplus clear water, low rate mixing;
4., finely tune to pH8～10, obtain finished product.
The preparation of finished product with coal water slurry, raw coal is from Shandong Yan Kuang.The addition of this finished product is 0.5%, the coal water slurry that can to make containing coal amount be 65%, and viscosity is 925mPa.s.
Embodiment 2
The preparation of finished product with coal water slurry, raw coal is from colliery, Datong.The addition of this finished product is 0.55%, the coal water slurry that can to make containing coal amount be 66%, and viscosity is 950mPa.s.
Claims (2)
1.AOS sulfonation electrostatic demist waste liquid is applied to prepares slurries additive agent, it is characterized in that, the tail gas in AOS sulfonation process is processed the waste liquid producing for the preparation of slurries additive agent through electrostatic precipitator; Comprise the following steps: it is soluble in water that the tail gas in AOS sulfonation process processes through electrostatic precipitator the waste liquid producing; Add PH conditioning agent, defoamer, visbreaking agent and stablizer, stir; To pH8～10, obtain additive;
The amount of each component is: 25～30% AOS waste liquid; 3～10% pH adjusting agent; 0.02～0.03% defoamer; 0～0.5% visbreaking agent paratoluenesulfonic acid sodium salt; 1.5～2.0% stablizer Xylo-Mucine; 60～70% clear water, above unit is mass percent; The addition of the slurries additive agent of gained is 0.3%～0.7% of butt coal dust weight; PH adjusting agent is calcium hydroxide, calcium carbonate, sodium carbonate or calcium oxide.
2. want AOS sulfonation electrostatic demist waste liquid described in 1 to be applied to according to right and prepare slurries additive agent, it is characterized in that, preparation process is:
(a) electrostatic precipitator of exhaust treatment system will be entered from the tail gas of sulfonation operating unit generation, the unreacted sulfurous gas containing in tail gas, sulfur trioxide gas and the small droplets that contains various ingredients pass through the processing of electrostatic precipitator, are brought together and just produce the thick liquid with irritating smell that color is more black; Be that waste liquid is soluble in water by this thick liquid;
(b) by soluble in water PH conditioning agent, add defoamer, visbreaking agent paratoluenesulfonic acid sodium salt and stablizer Xylo-Mucine; PH adjusting agent is calcium hydroxide, calcium carbonate, sodium carbonate or calcium oxide;
(c) solution in (b) is slowly added in (a) to low rate mixing;
(d) add water stir leave standstill, obtain pH8～10 finished product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100794.5A CN102337165B (en) | 2011-04-21 | 2011-04-21 | Application of waste liquid of AOS sulfonation electrostatic precipitation in preparing coal water slurry additive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110100794.5A CN102337165B (en) | 2011-04-21 | 2011-04-21 | Application of waste liquid of AOS sulfonation electrostatic precipitation in preparing coal water slurry additive |
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| CN102337165A CN102337165A (en) | 2012-02-01 |
| CN102337165B true CN102337165B (en) | 2014-08-20 |
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Families Citing this family (2)
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| CN103739226B (en) * | 2013-12-16 | 2015-06-10 | 浙江赞宇科技股份有限公司 | Method for preparing cement additive by using AES sulfonated electrostatic demisting waste liquid |
| CN114573136A (en) * | 2022-01-18 | 2022-06-03 | 天津天智精细化工有限公司 | Electrostatic demisting and washing method for fatty alcohol ether sulfonated tail gas |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1028525C (en) * | 1988-07-20 | 1995-05-24 | 国际壳牌研究有限公司 | Process for preparation of internal olefin sulphonates |
| CN101445472A (en) * | 2008-12-28 | 2009-06-03 | 嘉兴赞宇科技有限公司 | Method for preparing powdered Alpha-alkenyl sulphonate |
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- 2011-04-21 CN CN201110100794.5A patent/CN102337165B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1028525C (en) * | 1988-07-20 | 1995-05-24 | 国际壳牌研究有限公司 | Process for preparation of internal olefin sulphonates |
| CN101445472A (en) * | 2008-12-28 | 2009-06-03 | 嘉兴赞宇科技有限公司 | Method for preparing powdered Alpha-alkenyl sulphonate |
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