CN102286146A - Preparation method of defoaming agent for producing phosphoric acid by wet process - Google Patents
Preparation method of defoaming agent for producing phosphoric acid by wet process Download PDFInfo
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- CN102286146A CN102286146A CN 201110113050 CN201110113050A CN102286146A CN 102286146 A CN102286146 A CN 102286146A CN 201110113050 CN201110113050 CN 201110113050 CN 201110113050 A CN201110113050 A CN 201110113050A CN 102286146 A CN102286146 A CN 102286146A
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- phosphoric acid
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- defoaming
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Abstract
The invention relates to a preparation method of a defoaming agent for producing phosphoric acid by a wet process. The preparation method is characterized by comprising the following steps of: mixing 1.1-1.3mol of fatty acid, 1mol of polyether and 0.1mol of para-methyl-benzenesulfonic acid catalyst, the reaction temperature is 110-130 DEG C, the reaction time is 4-6 hours and a product is a defoaming agent. In the preparation method, the operation is simple, the used amount is less than that of other defoaming agents, and the defoaming effect is effective, quick and lasting; in the defoaming agent prepared by the invention, the defoaming action and the foam inhibiting action are good in the wet-process production of the phosphoric acid, the defoaming rate and the foam inhibiting rate reach more than 95%, the defoaming agent is ideal in wet-process production of the phosphoric acid, the application prospect is good, and no influence is caused on the following procedures, especially on the brightness and the crystallizability in producing granulated diammomium phosphate.
Description
Technical field
The present invention relates to the industrial defoaming agent field, be specifically related to a kind of defoamer preparation method who is used for Wet-process Phosphoric Acid Production.
Background technology
In the Wet-process Phosphoric Acid Production, when carbonate in the ground phosphate rock and organic content are higher, produce a large amount of CO with acid generation chemical reaction
2Gas.Fierceness with the acidolysis process is carried out CO
2Be dispersed in continuously in the reaction solution that contains organic components, form a stable foam layer on the slip surface, its volume can reach 5%～10% of reaction solution volume usually, and Wet-process Phosphoric Acid Production is brought many disadvantageous effects.At first, influence the dispersion and the acidolysis reaction of ground phosphate rock, cause throughput to descend; Secondly, foam layer had both reduced plant factor, made material level observe difficulty again; The 3rd, hindered in the reaction process moisture evaporation and heat and removed, cause the extraction tank temperature of reaction to raise, foam can be brought to tail desorption system even casual groove in a large number when serious, causes P
2O
5Loss and environmental pollution.
Be used for the defoamer kind of Wet-process Phosphoric Acid Production process, mainly contain lipid acid, Fatty Alcohol(C12-C14 and C12-C18), phosphoric acid ester, fatty amide etc. abroad.Domestic general with Yatall MA rosin, ready denier oil acid, oleic acid and vitriol thereof, homemade YX 1 and modification YX one 2 types the compound oil type defoamer that contains based on the hydramine fatty acid amide.Domestic Wet-process Phosphoric Acid Production starts from the eighties in last century with the R﹠D work of defoamer, based on chemical scientific research institutes, colleges and universities.1986, the Jiangsu chemical institute took the lead in developing at home You Xiao one 1 defoamers, applied to the production of the 30kt/a of phosphate fertilizer plant of Nan Hua company ammonium phosphate, and defoaming effect is remarkable.Nineteen ninety, this institute develops the froth breaking ability that the compounded oil fundamental mode defoamer that contains specific surfactant is better than other single variety defoamer.1993, it is main raw material that Hunan Chemical Research Institute utilizes the refinery dewaxing device to produce with the wax slop, synthesize the pentadecyl SULPHURYL CHLORIDE,, obtain the pentadecyl ammonium sulphonate through the ammoniacal liquor saponification, be AS--15, it is a kind of anion surfactant, and hydrophobic nature is better than wetting ability, has lower surface tension, this defoamer not only defoaming effect is good, also plays the effect of crystal modifier simultaneously.1998, Hubei Polytichnic College is a main component with lipid acid diethyl ester amine, and tributyl phosphate and diesel oil are thinner, and sodium laurylsulfonate is the band liquor, compositing formula (mass ratio) is 6: 4: 1 a defoamer, and this defoamer has good bubble ability and the static defoaming of pressing down.
At present, it is also few that China is applied to the chemical defoamer kind of phosphoric acid by wet process froth breaking, and the report of relevant defoamer use experience and effect aspect is also less.Develop some adaptability are strong, consumption is few, efficient is high, price is suitable Wet-process Phosphoric Acid Production dedicated defoamer just still less.
Summary of the invention
The object of the invention provides a kind of defoamer preparation method who is used for Wet-process Phosphoric Acid Production, prepared defoamer has good froth breaking effect and presses down the bubble effect, preparation method of the present invention is simple, cost is low, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
A kind of defoamer preparation method who is used for Wet-process Phosphoric Acid Production, it is characterized in that carrying out according to the following steps: with 1.1～1.3 molar part lipid acid and 1 molar part polyethers, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, in temperature of reaction is under 110～130 ℃ of conditions, reaction times is 4～6h, and product is defoamer.
Described lipid acid is stearic acid, palmitinic acid, lauric acid or myristic acid.
Described polyethers is the polyoxyethylene polyoxypropylene block polymer.
The present invention has following advantage: the preparation method is simple to operate, compare with other defoamer, consumption is few, and has efficient, rapid, a persistent defoaming effect, the defoamer that the present invention makes has good froth breaking effect and presses down the bubble effect in Wet-process Phosphoric Acid Production, defoamed ratio, to press down that the bubble rate all reaches be more than 95%, it is ideal defoamer comparatively in the phosphoric acid by wet process, has good application prospects, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
Embodiment
The invention will be further described in conjunction with the embodiments.
Embodiment 1
By 1.2 molar part stearic acid and 1 molar part polyoxyethylene polyoxypropylene block polymer, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, be under 120 ℃ of conditions in temperature of reaction, the reaction times is 5h, product is defoamer of the present invention.The defoamer that makes is had good froth breaking effect and presses down the bubble effect in Wet-process Phosphoric Acid Production, defoamed ratio, to press down that the bubble rate all reaches be more than 95%, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
Embodiment 2
By 1.1 molar part palmitinic acids and 1 molar part polyoxyethylene polyoxypropylene block polymer, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, be under 130 ℃ of conditions in temperature of reaction, the reaction times is 4h, product is defoamer of the present invention.The defoamer that makes is had good froth breaking effect and presses down the bubble effect in Wet-process Phosphoric Acid Production, defoamed ratio, to press down that the bubble rate all reaches be more than 95%, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
Embodiment 3
By 1.3 molar part lauric acid and 1 molar part polyoxyethylene polyoxypropylene block polymer, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, be under 110 ℃ of conditions in temperature of reaction, the reaction times is 6h, product is defoamer of the present invention.The defoamer that makes is had good froth breaking effect and presses down the bubble effect in Wet-process Phosphoric Acid Production, defoamed ratio, to press down that the bubble rate all reaches be more than 95%, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
Embodiment 4
By 1.3 molar part myristic acids and 1 molar part polyoxyethylene polyoxypropylene block polymer, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, be under 120 ℃ of conditions in temperature of reaction, the reaction times is 5h, product is defoamer of the present invention.The defoamer that makes is had good froth breaking effect and presses down the bubble effect in Wet-process Phosphoric Acid Production, defoamed ratio, to press down that the bubble rate all reaches be more than 95%, and under go on foot operation and do not have influence, particularly luminance brightness, the crystallization feel to the granulation of production diammonium phosphate do not have influence.
Claims (3)
1. defoamer preparation method who is used for Wet-process Phosphoric Acid Production, it is characterized in that carrying out according to the following steps: with 1.1～1.3 molar part lipid acid and 1 molar part polyethers, and 0.1 mole of p-methyl benzenesulfonic acid catalyzer, temperature of reaction is under 110～130 ℃ of conditions, reaction times is 4～6h, and product is defoamer.
2. according to the described defoamer preparation method who is used for Wet-process Phosphoric Acid Production of claim 1, it is characterized in that: described lipid acid is stearic acid, palmitinic acid, lauric acid or myristic acid.
3. according to the described defoamer preparation method who is used for Wet-process Phosphoric Acid Production of claim 1, it is characterized in that: described polyethers is the polyoxyethylene polyoxypropylene block polymer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110113050 CN102286146A (en) | 2011-05-04 | 2011-05-04 | Preparation method of defoaming agent for producing phosphoric acid by wet process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110113050 CN102286146A (en) | 2011-05-04 | 2011-05-04 | Preparation method of defoaming agent for producing phosphoric acid by wet process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600646A (en) * | 2012-03-28 | 2012-07-25 | 南宁春城助剂有限责任公司 | Defoamer for wet-process phosphoric acid production and production method thereof |
| CN105879431A (en) * | 2016-06-30 | 2016-08-24 | 云南磷化集团有限公司 | De-foaming agent for wet-process phosphoric acid extraction and preparation method for de-foaming agent |
| CN106492513A (en) * | 2016-11-14 | 2017-03-15 | 武汉宜田科技发展有限公司 | A kind of phosphoric acid by wet process tail-box defoamer |
| CN106565128A (en) * | 2016-10-21 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Polyester ether antifoaming agent, and preparation method and application thereof |
| CN111530129A (en) * | 2020-04-02 | 2020-08-14 | 南京德俊新材料科技有限公司 | Special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and preparation method thereof |
Citations (3)
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| CN1122854A (en) * | 1994-06-03 | 1996-05-22 | 赫彻斯特股份公司 | Prevention of fabric hand harshening on printing or dyeing cellulosic textiles |
| US6583185B2 (en) * | 1997-06-10 | 2003-06-24 | Cognis Corporation | Defoamers for aqueous systems |
| CN101376089A (en) * | 2008-09-28 | 2009-03-04 | 亚邦(福建)生化有限公司 | Method for preparing foam killer |
-
2011
- 2011-05-04 CN CN 201110113050 patent/CN102286146A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122854A (en) * | 1994-06-03 | 1996-05-22 | 赫彻斯特股份公司 | Prevention of fabric hand harshening on printing or dyeing cellulosic textiles |
| US6583185B2 (en) * | 1997-06-10 | 2003-06-24 | Cognis Corporation | Defoamers for aqueous systems |
| CN101376089A (en) * | 2008-09-28 | 2009-03-04 | 亚邦(福建)生化有限公司 | Method for preparing foam killer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600646A (en) * | 2012-03-28 | 2012-07-25 | 南宁春城助剂有限责任公司 | Defoamer for wet-process phosphoric acid production and production method thereof |
| CN105879431A (en) * | 2016-06-30 | 2016-08-24 | 云南磷化集团有限公司 | De-foaming agent for wet-process phosphoric acid extraction and preparation method for de-foaming agent |
| CN106565128A (en) * | 2016-10-21 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Polyester ether antifoaming agent, and preparation method and application thereof |
| CN106492513A (en) * | 2016-11-14 | 2017-03-15 | 武汉宜田科技发展有限公司 | A kind of phosphoric acid by wet process tail-box defoamer |
| CN106492513B (en) * | 2016-11-14 | 2018-11-27 | 武汉宜田科技发展有限公司 | A kind of phosphoric acid by wet process tailing slot defoaming agent |
| CN111530129A (en) * | 2020-04-02 | 2020-08-14 | 南京德俊新材料科技有限公司 | Special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and preparation method thereof |
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Application publication date: 20111221 |