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Modified aliphatic water reducer containing waste residues in phenol production process

An aliphatic water-reducing agent and production process technology, which are applied in the field of building materials to achieve the effects of reducing costs, increasing the number of branched chains, and improving the slump effect.

Inactive Publication Date: 2018-08-17
萧县沃德化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a modified aliphatic water reducer containing waste residues in the production process of phenols, which not only solves the problem of environmental protection, but also creates economic benefits

Method used

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  • Modified aliphatic water reducer containing waste residues in phenol production process

Examples

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Effect test

Embodiment 1

[0025] A modified aliphatic water reducer containing waste residues in the production process of phenols, characterized in that it comprises the following components by weight: 350 parts of water, 145 parts of sodium nitrite with a purity of 80%, and a concentration of 37 245 parts of formaldehyde, 62 parts of waste residues in the production process of phenols, and 98 parts of acetone.

[0026] The above-mentioned modified aliphatic water reducer containing waste residues in the production process of phenols, its synthesis method comprises the following steps:

[0027] (1) Take the raw materials of the above-mentioned parts by weight;

[0028] (2) Add water into the four-necked flask, add sodium nitrite while stirring, stir and mix evenly, put the waste residue in the phenol production process, continue to react for 30min, weigh acetone in the constant pressure funnel after the reaction , control the drop rate of acetone, after 25 minutes of dropping, stir and continue to re...

Embodiment 2

[0031] A modified aliphatic water reducer containing waste residues in the production process of phenols, characterized in that it comprises the following components by weight: 380 parts of water, 140 parts of sodium nitrite with a purity of 80%, and a concentration of 37 250 parts of formaldehyde, 65 parts of waste residues in the production process of phenols, and 95 parts of acetone.

[0032] The above-mentioned modified aliphatic water reducer containing waste residues in the production process of phenols, its synthesis method comprises the following steps:

[0033] (1) Take the raw materials of the above-mentioned parts by weight;

[0034] (2) Add water into the four-necked flask, add sodium nitrite while stirring, stir and mix evenly, put the waste residue in the phenol production process, continue to react for 30min, weigh acetone in the constant pressure funnel after the reaction , control the drop rate of acetone, after 22 minutes of dropping, stir and continue to re...

Embodiment 3

[0037] A modified aliphatic water reducer containing waste residues in the production process of phenols, characterized in that it comprises the following components by weight: 340 parts of water, 130 parts of sodium nitrite with a purity of 80%, and a concentration of 37 240 parts of formaldehyde, 60 parts of waste residues in the production process of phenols, and 90 parts of acetone.

[0038] The above-mentioned modified aliphatic water reducer containing waste residues in the production process of phenols, its synthesis method comprises the following steps:

[0039] (1) Take the raw materials of the above-mentioned parts by weight;

[0040] (2) Add water into the four-necked flask, add sodium nitrite while stirring, stir and mix evenly, put the waste residue in the phenol production process, continue to react for 30min, weigh acetone in the constant pressure funnel after the reaction , control the drop rate of acetone, after 28 minutes of dropping, stir and continue to re...

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Abstract

The invention provides a modified aliphatic water reducer containing waste residues in the phenol production process and relates to the field of building materials. The modified aliphatic water reducer is prepared from the following components in parts by weight: 300-500 parts of water, 110-180 parts of sodium nitrite, 230-280 parts of formaldehyde, 50-80 parts of the waste residues in the phenolproduction process and 85-105 parts of acetone. A synthetic method comprises the following steps of (1) weighing the raw materials in parts by weight; (2) adding water into a four-mouth flask, addingthe sodium nitrite while stirring, feeding the waste residues in the phenol production process after uniform stirring and mixing, performing continuous reaction for 30 minutes, weighing the acetone ina constant-pressure funnel after reaction is finished, controlling a dropwise adding speed of the acetone, finishing dropwise adding for 20-30 minutes, performing stirring for continuous reaction for30 minutes after dropwise adding is finished, starting to dropwise adding the formaldehyde, controlling a dropwise adding speed of the formaldehyde, finishing dropwise adding for 2-3 hours, performing heating to 95 DEG C after dropwise adding is finished, performing continuous insulation reaction for 3-4 hours, and descending the temperature after insulation is finished. The modified aliphatic water reducer provided by the invention solves the environmental protection problem and also creates the economic benefit.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a modified aliphatic water reducer containing waste residues in the production process of phenols. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. [0003] The waste residue produced during the synthesis of phenol or phenolic compounds or a small amount of residual mother liquor contains cumene, phenol, acetone, phenolic compounds and other substances, which are hazardous wastes and cannot be discharged directl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/02C04B103/30
CPCC04B40/0039C04B2103/302C04B24/008C04B24/02C04B22/085
Inventor 马丽涛刘景相乔琼琼彭城董翠平
Owner 萧县沃德化工科技有限公司
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