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A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid-based high-efficiency water reducer

A technology based on diaminobenzenesulfonic acid and aminobenzenesulfonic acid, applied in the field of high-efficiency water reducers, can solve problems such as easy bleeding, high production costs, and low practical application level, and achieve no three wastes discharge, short reaction cycle, The preparation method is simple and efficient

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

The sulfamic acid series high-efficiency water reducer in the prior art mainly uses formaldehyde, phenol and sodium p-sulfamate as raw materials, while the price of formaldehyde is about 950 yuan / t, the price of phenol is about 10,000 yuan / t, and the price of p-sulfanil Sodium acid is about 5,000 yuan / t, the production cost is high, it is easy to bleed, and the actual application degree is low

Method used

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  • A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid-based high-efficiency water reducer
  • A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid-based high-efficiency water reducer
  • A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid-based high-efficiency water reducer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer, including the following raw materials in parts by weight:

[0024]

[0025] Its preparation method comprises the following steps:

[0026] (1) Add water to the reaction kettle, then put in 2,4-diaminobenzenesulfonic acid production waste liquid and sodium sulfite respectively, raise the temperature of the reaction kettle to 80-85°C, stir for 30-60 minutes, and then put in β-naphthalene Phenol production waste liquid, stirring reaction for not less than 1 hour;

[0027] (2) Slowly add a pH regulator to the reactor to adjust the pH of the solution to 8-9;

[0028] (3) Raise the temperature of the reaction kettle 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.

[0029] When in use, the water reducing agent can be mixed into the cement a...

Embodiment 2

[0031] A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer, including the following raw materials in parts by weight:

[0032]

[0033] Its preparation method is with embodiment 1.

[0034] When in use, the water reducing agent can be mixed into the cement at 1.8-2.2wt% of the weight of the cement.

Embodiment 3

[0036] A 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid series high-efficiency water reducer, including the following raw materials in parts by weight:

[0037]

[0038]

[0039] Its preparation method is with embodiment 1.

[0040] When in use, the water reducing agent can be mixed into the cement at 1.8-2.2wt% of the weight of the cement.

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Abstract

The invention relates to the technical field of production of water reducers and particularly relates to a modified aminobenzene sulfonic acid-series high-effective water reducer prepared from production waste liquid of 2,4-diaminobenzene sulfonic acid. The water reducer includes, by weight, 150-180 parts of the production waste liquid of 2,4-diaminobenzene sulfonic acid, 50-100 parts of sodium sulfite, 60-90 parts of formaldehyde, 200-230 parts of a [beta]-naphthol production waste liquid, 10-30 parts of a pH conditioner, and 50-150 parts of water. The modified aminobenzene sulfonic acid-series high-effective water reducer prepared from the production waste liquid of 2,4-diaminobenzene sulfonic acid has low raw material cost and excellent practicability.

Description

technical field [0001] The invention relates to the technical field of water reducer production, in particular to a 2,4-diaminobenzenesulfonic acid production waste liquid modified aminobenzenesulfonic acid-based high-efficiency water reducer. Background technique [0002] 2,4-Diaminobenzenesulfonic acid is used for the production of active bright yellow X-6G, active bright yellow X-HG, active brilliant blue K-6G, active yellow KD-3G, active yellow M-5G, active brilliant blue K-BR, active A dye intermediate of dyes such as Brilliant Blue K-GR, Reactive Brilliant Blue M-BR, Weak Acid Scarlet FC, Acid Mordant Brown RH, etc. The production wastewater contains rich organic matter, high COD content, and difficult wastewater treatment. [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 du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/04C04B24/00C04B103/30
CPCC04B40/0039C04B2103/302C04B22/14C04B24/008C04B22/002C04B22/10C04B22/0046C04B24/04
Inventor 刘景相马丽涛
Owner ANHUI XIN SOLID ENVIRONMENTAL CO LTD