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Defoaming agent for phosphogypsum washing and preparation method thereof

A technology of defoamer and phosphogypsum, which is applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., can solve the problems of lack of pertinence, long foam suppression time, short defoaming time, etc., and achieve enhanced effect , Improve the anti-foaming effect and the effect of fast defoaming speed

Active Publication Date: 2022-06-28
湖北鑫钰鸿成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the acidic environment faced by phosphogypsum washing, there is currently no defoamer on the market that is highly targeted, has a short defoaming time, a long antifoaming time, and improves washing efficiency.

Method used

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  • Defoaming agent for phosphogypsum washing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 10 parts of the main active ingredient polyoxypropylene glycerol ether and 5 parts of carboxylate palmitic acid into a mixing pot for premixing, stir at 20-40°C for 10-20min, add 30 parts of water and heat to 40-70°C , stir well until uniform. Then add 5 parts of surfactant sodium dodecyl benzene sulfonate, 5 parts of foam suppressor fatty alcohol polyoxyethylene ether carboxylate sodium and fully stir and mix, stir for 10-20min until the surfactant and main active ingredient mixture are fully mixed, Add 5 parts of sodium dihydrogen phosphate, an inorganic salt, stir evenly, and cool to below 40° C. to obtain the desired defoamer.

Embodiment 2

[0027] Put 10 parts of fatty alcohol polypropylene ether, 10 parts of ethyl vinyl polyether, 5 parts of carboxylate dodecyl benzene sulfonic acid, and 10 parts of polyol fatty acid ester into the mixing pot for premixing, 20-40 parts Stir at ℃ for 10-20min, add 60 parts of water, heat up to 40-70 ℃, stir well until uniform. Then add 15 parts of surfactant sodium dodecyl benzene sulfonate, 15 parts of foam suppressor fatty alcohol polyoxyethylene ether carboxylate and fully mix, stir for 10-20min until surfactant and main active ingredient mixture are fully mixed, Then add 10 parts of sodium dihydrogen phosphate, an inorganic salt, stir evenly, and cool to below 40° C. to obtain the desired defoamer.

Embodiment 3

[0029] Put the main active ingredients 10 parts of ethyl vinyl polyether, 5 parts of polyethylene glycol ether, 5 parts of carboxylated isopropyl palmitate, 5 parts of polyol fatty acid ester into the mixing pot and pre-mixed at 20-40 ℃ Stir for 10-20min, add 45 parts of water, heat up to 40-70°C, and fully stir until uniform. Then add 10 parts of surfactant organic amine soap, 10 parts of foam inhibitor sodium phthalate mono-fatty alcohol ester and fully stir and mix, stir for 10-20min until the mixture of surfactant and main active ingredient is fully mixed, and then add inorganic sodium sulfate 8 parts, stir evenly, and cool to below 40°C to obtain the desired defoamer.

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PUM

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Abstract

The invention discloses a defoaming agent for phosphogypsum washing and a preparation method of the defoaming agent. The defoaming agent comprises the following components in parts by weight: 10-20 parts of a polyether compound, 5-15 parts of C12-18 carboxylic acid and derivatives, 5-15 parts of an anionic surfactant, 5-15 parts of a foam inhibitor, 5-10 parts of inorganic salt and 30-60 parts of water. The defoaming agent adopts an acid-resistant component, can stably act on washing operation in an acid environment, and has the advantages of high defoaming speed, good effect, long foam inhibition action time and the like.

Description

technical field [0001] The invention relates to the technical field of defoaming agents, in particular to a defoaming agent for washing phosphogypsum with water and a preparation method thereof. Background technique [0002] Phosphogypsum is a by-product of wet production of phosphoric acid, the main component is CaSO 4 ·2H 2 O is the chemical by-product with the largest emission and the lowest utilization rate among the chemical by-products of gypsum in my country. There are more than 100 wet-process phosphoric acid production lines in my country, and the annual discharge of phosphogypsum has exceeded 50 million tons. At present, the utilization rate of phosphogypsum is only about 20%, and the cumulative stockpile has exceeded 200 million tons. The accumulation of a large amount of phosphogypsum not only occupies land, but The increased cost is more serious because the phosphogypsum is soaked in rainwater for a long time, and the soluble phosphide and fluoride and other ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
CPCB01D19/04B01D19/0404Y02W30/91
Inventor 刘传红夏武成刘旭
Owner 湖北鑫钰鸿成科技有限公司
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