Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation process of water reducing agent

A preparation process and technology of water reducing agent, applied in the field of preparation technology of water reducing agent, can solve the problems of inconvenient operation, difficult temperature control, etc., and achieve the effects of convenient operation, low requirements for the use of equipment and lower production cost

Active Publication Date: 2013-08-28
安徽森普新型材料发展有限公司
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the existing technology is difficult to control the temperature, it needs to be condensed with water in summer, and wrapped in a quilt in winter, which is very inconvenient to operate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A preparation process of a water reducer, followed by the following steps:

[0021] First, under normal temperature and pressure, 10 tons of water and 2.5 tons of anhydrous sodium sulfite powder were sequentially added into the reactor, and stirred for 30 minutes to obtain a solvent.

[0022] Next, 2 tons of acetone was added dropwise, followed by stirring for 30 minutes.

[0023] Again, add formaldehyde dropwise and stir while adding. When the amount of formaldehyde added dropwise is 2 tons, the temperature in the reactor reaches 50°; then add 4 tons of formaldehyde quickly, stir while adding, formaldehyde and acetone react chemically, exothermic , the temperature rises to 90°.

[0024] Finally, when the temperature in the reactor reaches 90°, keep it warm for 2 hours to obtain the finished water reducer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation process of a water reducing agent. The process sequentially comprises the following steps of: sequentially adding 9 to 11 tons of water and 2 to 3 tons of anhydrous sodium sulfite powder into a reaction kettle, stirring for 25 to 35 minutes, and obtaining a solvent; dripping 1.5 to 2.5 tons of acetone, and stirring for 30 minutes; dripping formaldehyde with stirring, wherein the quantity of the dripped formaldehyde is 1.8 to 2.2 tons, the temperature in the reaction kettle reaches 50 DEG C; quickly adding 3.5 to 4.5 tons of formaldehyde with stirring, wherein the formaldehyde and the acetone undergo chemical reaction to release heat, and the temperature is raised to 90 DEG C; and after the temperature in the reaction kettle reaches 90 DEG C, performing heat preservation for 1.5 to 2.5 hours, and thus obtaining a finished product of the water reducing agent. The process does not need heating or cooling treatment, is more convenient in operation and low in using requirements of equipment, and reduces the production cost of an enterprise.

Description

Technical field: [0001] The invention mainly relates to the technical field of water reducing agents, in particular to a preparation process of water reducing agents. Background technique: [0002] In the prior art, the method for preparing the water reducer is as follows: firstly add 10 tons of water and 2.5 tons of anhydrous sodium sulfite powder to the reaction kettle in sequence, stir for 30 minutes to obtain a solvent; add 6 tons of formaldehyde dropwise into the solvent, and add while adding Stir; then add acetone dropwise, at this time, turn on the condensed water and control the temperature at about 50°; after 1.5-2 hours, add water vapor into the reaction kettle, raise the temperature to about 90°, and obtain the finished water reducer . [0003] In this preparation process, because acetone and formaldehyde react exothermicly, a large amount of heat is generated, so that the temperature in the reactor rises too fast, and the boiling point of acetone is about 57°. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/22C04B103/30
Inventor 张家如
Owner 安徽森普新型材料发展有限公司