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Modified sulfamate efficient water reducer and preparation method thereof

A technology of sulfamate and high-efficiency water reducer, which is applied in the field of waste liquid treatment, can solve the problems of great harm to the human body and the environment, difficult biochemical degradation, strong acid-base buffering ability, etc., to reduce slump loss and pollution , Good collapse-retaining effect

Inactive Publication Date: 2015-08-19
萧县沃德化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Binaphthol production wastewater has the characteristics of complex components, high concentration, high toxicity, dark color, strong acid-base buffering ability, difficult biochemical degradation and great harm to human body and environment.
The resulting environmental pollution problems have not been effectively resolved
So far, there are few methods about utilizing 2-naphthol waste liquid and sodium dodecyl diphenyl ether disulfonate to directly synthesize sulfamate high-efficiency water reducers

Method used

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  • Modified sulfamate efficient water reducer and preparation method thereof
  • Modified sulfamate efficient water reducer and preparation method thereof
  • Modified sulfamate efficient water reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A modified sulfamate high-efficiency water reducer, the raw materials are calculated in parts by weight, and the proportioning ratio is:

[0023]

[0024] The synthesis process is as follows: put 400 parts of binaphthol waste liquid and 40 parts of urea into a four-necked flask according to the mass parts in this example, and heat to 40°C while stirring, and start to add 120 parts of sodium p-aminobenzenesulfonate, 95 parts of phenol Continue to stir while heating to 60°C, add 25 parts of liquid caustic soda, adjust the pH value, then add 5 parts of sodium dodecyl diphenyl ether disulfonate and stir evenly, then weigh 170 parts of formaldehyde and put it into the constant pressure funnel , Add formaldehyde dropwise at 60-85°C, and complete the dropwise addition within 2-3 hours. After the dropwise addition, raise the temperature to 95-105°C and keep it warm for 3-6 hours. After the heat preservation, add 210 parts of water and cool down to get the sample.

Embodiment 2

[0026] A modified sulfamate high-efficiency water reducer, the raw materials are calculated in parts by weight, and the proportioning ratio is:

[0027]

[0028]

[0029] According to the mass parts in this example, the synthesis steps are as in Example 1.

Embodiment 3

[0031] A modified sulfamate high-efficiency water reducer, the raw materials are calculated in parts by weight, and the proportioning ratio is:

[0032]

[0033] According to the mass parts in this example, the synthesis steps are as in Example 1.

[0034] The binaphthol waste liquid modified sulfamate high-efficiency water reducer is used in the concrete of construction projects, wherein the binaphthol waste liquid modified sulfamate water reducer is added to the concrete mixture in the form of an aqueous solution. The dosage is 0.5%-1.5% of the cement weight, preferably 0.8-1.2% of the cement weight.

[0035] Comparison table of compressive strength between the product of the present invention and commonly used sulfamate water reducers

[0036]

[0037] Comparison table of the slump between the product of the present invention and the commonly used sulfamate water reducer

[0038]

[0039] Comparison table of the gas content of the product of the present invention...

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Abstract

The invention provides a modified sulfamate efficient water reducer and a preparation method thereof, particularly relates to a dinaphthol waste modified sulfamate efficient water reducer and relates to the technical field of waste treatment. The reducer comprises raw materials of, by weight, 120 parts to 130 parts of sodium sulfanilate, 400 parts of dinaphthol waste, 95 parts of phenol, 170 parts of formaldehyde, 25 parts of liquid caustic soda (30%), 30 parts to 50 parts of urea, 1 part to 10 parts of dodecyl diphenyl ether sodium disulfonate and 180 parts to 260 parts of water. By means of the water reducer and the preparation method thereof, dinaphthol waste recycling is achieved, waste water are not needed to be subjected to concentration or any other treatment of physical chemical treatment and the like, energy consumption is saved, and pollution and damage of the waste to the environment and humans are prevented.

Description

technical field [0001] The invention relates to the technical field of waste liquid treatment, in particular to a method for directly synthesizing an early-strength sulfamate high-efficiency water reducer without any treatment from a waste liquid produced in the production process of dinaphthol. Background technique [0002] The production of binaphthol in my country mainly adopts the sulfonation-alkali fusion route of naphthalene, and is obtained through sulfonation, hydrolysis, neutralization, alkali fusion, acidification, and refining. This process mainly produces two waste liquids, one is: the mother liquor after suction filtration of sodium naphthalenesulfonate; the other is: the mother liquor after the water phase is cooled and press-filtered after the crude phenol is boiled and stratified. [0003] Binaphthol production wastewater has the characteristics of complex composition, high concentration, high toxicity, dark color, strong acid-base buffering ability, difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22C04B103/30
Inventor 董翠平彭城马丽涛
Owner 萧县沃德化工科技有限公司
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