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Defoamer for wet-process phosphoric acid production and production method thereof

A technology of phosphoric acid defoamer and wet-process phosphoric acid, which is applied in the direction of foam dispersion/prevention, can solve the problems of defoamer use experience and effect, and there are not many types of chemical defoamers, and achieve defoaming performance and stability Good, cost-effective, simple production process effect

Inactive Publication Date: 2014-05-28
南宁春城助剂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many types of chemical defoamers used in wet-process phosphoric acid defoaming in my country, and there are few reports on the experience and effects of defoamers.

Method used

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  • Defoamer for wet-process phosphoric acid production and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, the defoamer active ingredients in proportion by weight: 10 parts of fatty alcohol polyoxyethylene ether, 10 parts of polyoxypropylene glyceryl ether, 10 parts of propylene glycol block polyether L-31 and carboxylate dodecylbenzenesulfonic acid 2 parts, 6 parts of octadecanoic acid are put into the mixing pot for pre-mixing, then add 3 parts of emulsifier S-60, 2 parts of OP-10 and mix thoroughly; under stirring, add 30 parts of carrier base oil (No. 100 base oil) , 23 parts of white oil were put in and mixed uniformly; then 4 parts of potassium dihydrogen phosphate were added and mixed uniformly, and then emulsified by a homogenizer, ground, homogenized, and refined to obtain a defoamer for high-temperature-resistant strong acid wet-process phosphoric acid production.

[0031] The specific method is:

[0032] First put the above ethers and carboxylates into a jacketed mixing pot with stirring, heat up to 80 °C while stirring, then add emulsifier, stir at 80 °C t...

Embodiment 2

[0034] First, the active ingredients of the defoamer in proportion to the weight fraction: 10 parts of polyoxyethylene polyoxypropylene glyceryl ether, 10 parts of polyoxyethylene polyoxypropylene monobutyl ether, 10 parts of propylene glycol block polyether L-61 and carboxylated Put 5 parts of calcium dodecylbenzenesulfonate and 8 parts of isopropyl palmitate into the mixing pot for pre-mixing, then add 4 parts of emulsifier S-80, 1 part of NP-15 and mix thoroughly. Under stirring, the carrier 20 parts of paraffin, 20 parts of white mineral oil, 10 parts of kerosene are put in and mixed evenly; then 2 parts of sodium nitrate are added and mixed evenly, and then emulsified, ground, homogenized and refined by a homogenizer or a colloid mill to obtain a high temperature resistant strong acid Defoamer for wet-process phosphoric acid production.

[0035] The specific method is:

[0036] First put the above ethers and carboxylates into a jacketed mixing pot with stirring, raise t...

Embodiment 3

[0038] First, the defoamer active ingredient in proportion by weight: 20 parts of propylene glycol block polyether L-61, 10 parts of polyoxypropylene glyceryl ether and 5 parts of carboxylated dodecylbenzenesulfonic acid, 11 parts of dehydroabietic acid , put into the mixing pot for pre-mixing, then add 3 parts of emulsifier NP-2, 2 parts of T-80 and stir well, under stirring, put 38 parts of carrier white mineral oil, 10 parts of white oil, mix well; 1 part of ammonium phosphate is mixed evenly, then emulsified, ground, homogenized and refined by a homogenizer or a colloid mill to obtain a defoamer for high temperature resistant strong acid wet-process phosphoric acid production.

[0039] The specific method is:

[0040] First put the above ethers and carboxylates into a jacketed mixing pot with stirring, heat up to 70 °C while stirring, then add emulsifier, stir at 80 °C to 90 °C for 0.5 h, continue to stir at a constant speed Slowly add the carrier composition, mix at a te...

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Abstract

The invention discloses a defoamer for wet-process phosphoric acid production, which is characterized by consisting of the following components in parts by weight: 30-100 parts of mineral oil, 1-30 parts of ethers, 1-20 parts of carboxylates, 1-10 parts of an emulsifier and 1-10 parts of an inorganic salt. A preparation method of the defoamer for wet-process phosphoric acid production comprises the steps of pre-emulsifying the ethers and the carboxylates by using the compound emulsifier; then mixing with the mineral oil and the inorganic salt; and finally emulsifying, grinding, homogenizing and thinning to obtain the defoamer for wet-process phosphoric acid production. According to the invention, the production process of the product is simple, the production control is simple and convenient and the conditions are not overcritical; the product does not influence the qualities of phosphoric acid products, has good environmental compatibility and does not pollute the environment; the product is low in surface tension, quick for defoaming, long in foam inhibition time and less in dosage; and the raw material sources are wide, the cost is suitable and the performance price ratio is high. The defoamer is not only suitable for wet-process phosphoric acid production, but also suitable for acidic medium defoaming and foam inhibition in the industries of spinning, printing and dyeing and the like.

Description

technical field [0001] The invention relates to the field of industrial defoamers, in particular to a defoamer used for wet-process phosphoric acid production and a production method thereof, which takes mineral oil as a carrier. Background technique [0002] Phosphoric acid is mainly used in fertilizer and industrial phosphate production. The industrial production methods of phosphoric acid mainly include wet method and thermal method. The wet-process phosphoric acid production method is suitable for the use of medium and low-grade phosphate rock raw materials. At present, more than 80% of phosphoric acid in my country is produced by wet process. The raw materials used in wet-process phosphoric acid production are phosphate rock powder and sulfuric acid. Phosphate rock powder contains carbonate (CaCO 3 , MgCO 3 ), oxides (Al 2 o 3 , Fe 2 o 3 ), silicates, acid insolubles and organic matter. When phosphate rock powder reacts with sulfuric acid, a large amount of gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
Inventor 关文华黄阁辉兰景艳谢秀平
Owner 南宁春城助剂有限责任公司
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