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A kind of sulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer

An aminobenzenesulfonic acid-based, high-efficiency water reducer technology, applied in the field of water reducer production, can solve the problems of high production cost, easy bleeding, low application level, etc., and achieve good product workability, no three wastes discharge, Reducing and Bleeding Effects

Active Publication Date: 2018-09-28
ANHUI XIN SOLID ENVIRONMENTAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing sulfamic acid-based high-efficiency water reducers on the market have high production costs, are prone to bleeding, and have low practical application levels.

Method used

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  • A kind of sulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer
  • A kind of sulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer
  • A kind of sulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer

Examples

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preparation example Construction

[0029] Its preparation method comprises the following steps:

[0030] (1) Dissolving and filtering: add water to the reactor, then add crude sodium sulfanilate and bamboo tar crude phenol respectively, raise the temperature of the reactor to 80-85°C, stir for not less than 1 hour, cool, Filter to remove the solid slag, keep the filtrate for later use;

[0031] (2) Addition: Slowly add a pH regulator to the filtrate obtained in step (1) to adjust the pH of the solution to 8-9;

[0032] (3) Polycondensation: heat the solution to 90-95°C, slowly add formaldehyde solution to it, so that the formaldehyde will be dripped within 1.5-2 hours, and keep warm for no less than 2 hours;

[0033] (4) Copolymerization: Add G sulfonic acid production waste liquid to the solution, keep the solution temperature between 75-85°C for 1-2 hours, adjust the solid content with water, and obtain the finished product.

[0034] When in use, the water reducer can be mixed into the cement at 1.4wt% of t...

Embodiment 2

[0036] A kind of G sulfonic acid production waste liquid modified sulfamic acid series high-efficiency water reducer, including the following raw materials in parts by weight:

[0037]

[0038] Its preparation method is with embodiment 1.

[0039] When in use, the water reducing agent can be mixed into the cement at 1.1wt% of the weight of the cement.

Embodiment 3

[0041] A kind of G sulfonic acid production waste liquid modified sulfamic acid series high-efficiency water reducer, including the following raw materials in parts by weight:

[0042]

[0043] Its preparation method is with embodiment 1.

[0044] When in use, the water reducing agent can be mixed into the cement at 1.2wt% of the weight of the cement.

[0045] When in use, the water reducing agent can be mixed into the cement at 1.5wt% of the weight of the cement.

[0046] The performance data of the water reducer prepared in Examples 1-4 are shown in the following table:

[0047]

[0048] As can be seen from the above table, compared with the test standard of the national standard "Concrete Admixture", the water-reducing agent prepared in Examples 1-4 has a higher water-reducing rate, a lower air content, and a lower 28d shrinkage ratio. Concrete has high compressive strength.

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Abstract

The invention relates to the production technology field of cement admixture, particularly to a high-efficiency water-reducing agent of modified amino benzene sulfonic acid series of G sulfonic acid producing wastewater; the water-reducing agent is prepared, by weight, from 120- 150 parts of coarse sodium sulfanilate, 70-90 parts of formaldehyde, 300-420 parts of bamboo tar crude phenol, 40-70 parts of G sulfonic acid producing wastewater, 10-30 parts of pH regulator, 100-180 parts of water The invention uses G sulfonic acid producing wastewater to prepare the water-reducing agent with high added-value, and can realize the waste use and obtain a convenient and economic high-efficiency water-reducing agent of G sulfonic acid modified amino benzene sulfonic acid series with wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water reducer production, in particular to a modified aminobenzenesulfonic acid-based high-efficiency water reducer and a preparation method thereof by G sulfonic acid production waste liquid. Background technique [0002] G sulfonic acid, namely N-ethyl-N-benzyl m-toluidine-3-sulfonic acid, is a dye intermediate of scarlet G. The organic matter in the production wastewater is rich in types, the COD content is high, and the wastewater treatment is difficult. [0003] Water reducer is an admixture that can reduce the amount of mixing water while maintaining the fluidity of concrete basically the same. It is the most widely researched and used concrete admixture at present. Adding water reducing agent during use can improve the workability and fluidity of freshly mixed concrete, increase the strength of concrete, and prolong the service life of concrete components. Therefore, water reducing agent is an ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G14/12C08G14/073C04B24/22C04B103/30
CPCC04B24/226C04B2103/30C08G14/06C08G14/12
Inventor 刘景相马丽涛
Owner ANHUI XIN SOLID ENVIRONMENTAL CO LTD
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