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Energy-saving hydrolyzer for preparation of polyacrylamide polymer by post-hydrolysis technique and method

The technology of polyacrylamide and hydrolyzer is applied to the energy-saving hydrolyzer and field for preparing polyacrylamide polymer by post-hydrolysis method, which can solve the problem of high energy consumption of polyacrylamide polymer and achieve high molecular weight quality, The effect of low energy consumption and shortening of system working time

Active Publication Date: 2014-10-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One object of the present invention is to improve the key equipment in the process - the hydrolysis reactor, to provide an energy-saving hydrolysis reaction in view of the disadvantage of high energy consumption in the production of polyacrylamide polymers in the post-hydrolysis process of the prior art device (hydrolyzer) to save energy and reduce consumption, reduce production costs

Method used

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  • Energy-saving hydrolyzer for preparation of polyacrylamide polymer by post-hydrolysis technique and method
  • Energy-saving hydrolyzer for preparation of polyacrylamide polymer by post-hydrolysis technique and method
  • Energy-saving hydrolyzer for preparation of polyacrylamide polymer by post-hydrolysis technique and method

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Experimental program
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Embodiment 1

[0032] Below with 4 8 ton tanks (hydrolyzers) illustrate the use situation of the hydrolyzer equipment that provides the direct power that drives stirring device with hydraulic device of the present invention.

[0033] Firstly, the granulated polyacrylamide polymer is sent into the hydrolyzer through the conveying device. Raise the temperature to meet the process requirements. When the temperature is reached, according to the process requirements, add the required amount of solid sodium hydroxide into the hydrolyzer. At this time, the colloidal particles enter the state of hydrolysis, and the hydrolysis is carried out according to the time required by the process. After the hydrolysis is completed, the material is unloaded and sent to the next process link by the conveyor. Please refer to Table 1 for relevant process conditions and hydrolysis conditions.

[0034] Table 1

[0035]

Embodiment 2

[0037] Below with 4 5 ton tanks (hydrolyzers), illustrate the use of the hydrolyzer equipment that provides the direct power of driving stirring device with hydraulic device of the present invention.

[0038]Firstly, the granulated polyacrylamide polymer is sent into the hydrolyzer through the conveying device. Raise the temperature to meet the process requirements. When the temperature is reached, according to the process requirements, add the required amount of solid alkali into the hydrolyzer. At this time, the colloidal particles enter the state of hydrolysis, and the hydrolysis is carried out according to the time required by the process. After the hydrolysis is completed, the material is unloaded and sent to the next process link by the conveyor. Please refer to Table 2 for relevant process conditions and hydrolysis conditions.

[0039] Table 2

[0040]

[0041] It can be seen from the above examples that in the process of preparing polyacrylamide polymers by the ...

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Abstract

The invention provides an energy-saving hydrolyzer for preparation of a polyacrylamide polymer by post-hydrolysis technique and a method. The hydrolyzer comprises a stirring device, and a hydraulic device provides direct power to the stirring device of the hydrolyzer. The invention also provides a method for producing the polyacrylamide polymer by the energy-saving hydrolyzer. By employing the hydrolyzer provided by the invention to produce the polyacrylamide polymer, energy can be saved, consumption can be reduced, and the production cost can be lowered.

Description

technical field [0001] The present invention relates to key equipment and related processes used in a post-hydrolysis process for preparing polyacrylamide polymers, in particular to an improved hydrolyzer and the use of the hydrolyzer to prepare polyacrylamides by post-hydrolysis The polymer method can save energy and reduce consumption, reduce production costs, and solve key problems in the post-hydrolysis process. Background technique [0002] The hydrolysis process of polyacrylamide polymers is divided into pre-hydrolysis process and post-hydrolysis process. The post-hydrolysis process is that the acrylamide monomer becomes a colloid after polymerization, which is granulated by primary granulation equipment, and then mixed and stirred with solid sodium hydroxide with a purity of 90-99.99% under heating conditions of 50-95°C for hydrolysis. The ratio of alkali addition is 5% to 60%, and the hydrolysis time is 2 to 10 hours. The outer layer of the cylinder of the hydrolys...

Claims

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Application Information

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IPC IPC(8): C08F8/12C08F20/56
Inventor 朱卓岩陈国浩欧阳坚王凤王源源薛俊杰
Owner PETROCHINA CO LTD
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