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Method for producing bamboo tar crude phenol-modified aminosulfonic acid-based superplasticzer

A technology of sulfamic acid-based and high-efficiency water reducers, which is applied in the field of crude phenol-modified sulfamic acid-based high-efficiency water reducers. It can solve the problems of low content of single components, high cost of separation and purification, and complex components, and achieve the amount of bleeding Effects of drop, improvement of concrete workability and workability, and reduction of production cost

Inactive Publication Date: 2012-07-11
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But at present, many important components in bamboo tar have not been developed and utilized, and because of its complex composition, the content of a single component is low. If a certain component is to be separated, the cost of separation and purification is high, and the gain outweighs the gain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The collection of bamboo tar and the separation of contained crude phenol, the flue gas discharge pipe that is attached to the cooling water circulation pipe is installed on the bamboo charcoal firing device, cools the flue gas with cooling water in the bamboo charcoal firing process, collects flue gas to produce The liquid, clarification separates, and liquid layer is bamboo vinegar layer, and viscous precipitation layer is bamboo tar; Bamboo tar is washed with lye-sodium hydroxide solution of mass concentration 4% (the same below), separates after clarification, gained liquid layer Bamboo tar crude phenol;

[0018] (2) Utilize the determination of the ratio of bamboo tar crude phenol to replace phenol obtained by separation, change the ratio of bamboo tar crude phenol to replace phenol to synthesize sulfamic acid series high-efficiency water reducing agent, according to the mensuration of product water-reducing dispersibility, the substitution ratio is determined t...

Embodiment 2

[0021] (1) The collection of bamboo tar and the separation of contained crude phenol, the flue gas discharge pipe that is attached to the cooling water circulation pipe is installed on the bamboo charcoal firing device, cools the flue gas with cooling water in the bamboo charcoal firing process, collects flue gas to produce The liquid is clarified and separated, the liquid layer is a bamboo vinegar layer, and the thick precipitate layer is bamboo tar, and the bamboo tar is washed with 2% lye-sodium hydroxide solution, separated after clarification, and the gained liquid layer is bamboo tar crude phenol;

[0022] (2) Utilize the determination of the ratio of bamboo tar crude phenol to replace phenol obtained by separation, change the ratio of bamboo tar crude phenol to replace phenol to synthesize sulfamic acid series high-efficiency water reducing agent, according to the mensuration of product water-reducing dispersibility, the substitution ratio is determined to be 15 %;

[0...

Embodiment 3

[0025] (1) The collection of bamboo tar and the separation of contained crude phenol, the flue gas discharge pipe that is attached to the cooling water circulation pipe is installed on the bamboo charcoal firing device, cools the flue gas with cooling water in the bamboo charcoal firing process, collects flue gas to produce The liquid is clarified and separated, the liquid layer is a bamboo vinegar layer, and the thick precipitate layer is bamboo tar, and the bamboo tar is washed with 1% lye-sodium hydroxide solution, separated after clarification, and the gained liquid layer is bamboo tar crude phenol;

[0026] (2) Utilize the determination of the ratio of bamboo tar crude phenol to replace phenol obtained by separation, change the ratio of bamboo tar crude phenol to replace phenol to synthesize sulfamic acid series high-efficiency water reducing agent, according to the mensuration of product water-reducing dispersibility, the substitution ratio is determined to be 20 %;

[0...

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Abstract

The invention discloses a method for producing a bamboo tar crude phenol-modified aminosulfonic acid-based superplasticzer, which adopts the following steps of: (1) determining a ratio of replacing phenol by utilizing the separated crude phenol of a bamboo tar; and (2) determining a process of producing the bamboo tar crude phenol-modified aminosulfonic acid-based superplasticzer. The method for producing the bamboo tar crude phenol-modified aminosulfonic acid-based superplasticzer solves the problems of complicated components, low content of single component and no effective utilization of the bamboo tar produced in the bamboo charcoal firing process, produces the modified aminosulfonic acid-based superplasticzer by obtaining the high-content crude phenol through a simple and economic separation method and replacing part of the phenol by the crude phenol, and is an effective method for effectively treating and utilizing the bamboo tar and reducing the utilization of nonrenewable resources.

Description

technical field [0001] The invention relates to a method of crude phenol-modified sulfamic acid-based high-efficiency water reducer, in particular to a method for crude phenol-modified sulfamic acid-based high-efficiency water-reducer in bamboo tar. Background technique [0002] With the continuous development of the construction industry and science and technology, large or extra-large buildings continue to appear, such as subway projects, sea-crossing bridges, hydropower dams, etc., and the performance requirements of concrete are also getting higher and higher. At present, the performance of concrete is generally improved by adding admixtures to concrete, and a simple and easy construction process is provided. In recent decades, various types of concrete admixtures have been vigorously promoted at home and abroad, especially concrete reducing The use of water reducing agent, the technology of water reducing agent and its application represent the level of a country's buil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C04B103/30
Inventor 蒋新元吴志平赵建新李阁男万晓清
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY