A kind of aliphatic water-reducer made from lignosulfonate waste water and its synthesis process

A technology of lignosulfonate and aliphatic water reducing agent, which is applied in the field of concrete water reducing agent, can solve the problems of digesting lignosulfonate wastewater, unable to prepare lignosulfonate water reducing agent, etc. Reasonable utilization of resources, improvement of water reduction effect, effect of improving reaction efficiency and yield

Active Publication Date: 2022-05-20
ZHEJIANG JISHENG CHEM BUILDING MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing lignosulfonate wastewater has been oversaturated, and it is impossible to completely digest lignosulfonate wastewater by using lignosulfonate wastewater to prepare lignosulfonate water reducer. Therefore, it is lignosulfonate The comprehensive utilization of wastewater has opened up a new way, and it is necessary to realize the resource utilization of lignosulfonate wastewater

Method used

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  • A kind of aliphatic water-reducer made from lignosulfonate waste water and its synthesis process
  • A kind of aliphatic water-reducer made from lignosulfonate waste water and its synthesis process
  • A kind of aliphatic water-reducer made from lignosulfonate waste water and its synthesis process

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Experimental program
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Effect test

Embodiment 1

[0059] The difference between embodiments 10-13 and embodiment 1 is that the extractant comprises the following raw materials in weight percentage:

[0060]

[0061] The difference between Embodiment 14-17 and Embodiment 1 is that the stripping agent comprises the following raw materials in weight percentage:

[0062]

[0063]

[0064] The difference between Embodiment 18-21 and Embodiment 1 is that the heating temperature in step S2 is as shown in the table below:

[0065] Example Example 18 Example 19 Example 20 Example 21 temperature / ℃ 43 45 47 50

[0066] The difference between embodiment 22-25 and embodiment 1 is that the reaction time in step S2 is as shown in the table below:

[0067] Example Example 22 Example 23 Example 24 Example 25 time / h 0.5 0.7 1 1.3

[0068] The difference between Embodiment 26-29 and Embodiment 1 is that the heating temperature in step S3 is as shown in the table below:

[0...

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Abstract

The invention relates to an aliphatic water-reducer prepared from lignosulfonate wastewater and its synthesis process, and relates to the technical field of concrete water-reducer, which comprises the following raw materials in parts by weight: treated lignosulfonate 10-30 parts of waste water; 10-30 parts of acetone; 40-70 parts of formaldehyde; 10-30 parts of sodium sulfite; 40-60 parts of deionized water. The present invention uses lignosulfonate wastewater to prepare aliphatic water reducer, opens up a new way of comprehensive utilization of lignosulfonate wastewater, realizes rational utilization of lignosulfonate wastewater resources, and improves aliphatic water reducer water-reducing effect.

Description

technical field [0001] The invention relates to the technical field of concrete water reducers, in particular to an aliphatic water reducer prepared from lignosulfonate wastewater and a synthesis process thereof. Background technique [0002] High-efficiency water reducer is one of the main raw materials for producing high-strength and high-performance concrete. At present, in the domestic market, in addition to naphthalene-based superplasticizers, there are also melamine resin superplasticizers, sulfamic acid superplasticizers and aliphatic superplasticizers, among which aliphatic superplasticizers are It is one of the most important non-naphthalene water reducers. The raw materials for the production of aliphatic water reducers include formaldehyde and sodium sulfite. [0003] At present, lignosulfonate wastewater is commonly used to prepare lignosulfonate water reducer, so as to realize the rational utilization of resources of lignosulfonate wastewater. However, the exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G6/02C04B24/18C04B103/30
CPCC04B24/18C04B2103/302
Inventor 金瑞浩徐伟竹林贤诸旭峰王森峰
Owner ZHEJIANG JISHENG CHEM BUILDING MATERIALS
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