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High-molecular water-soluble polymer residue soil dispersing agent

A water-soluble polymer and dispersant technology, applied in lubricating compositions, earth-moving drilling, mining equipment, etc., can solve the problems of large differences in the effect of dispersant solutions, affecting the normal progress of construction, increasing construction risks, etc. The effect of social benefit and economy, shortening the construction period, and reducing the frequency of opening positions

Active Publication Date: 2020-12-04
CHINA RAILWAY FIRST GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction of shield tunneling in sandy pebble and mudstone composite stratum, the occurrence of mud cake on the cutter head is also relatively frequent, which greatly affects the normal progress of construction and increases the risk of construction
[0003] At present, oxalic acid and dispersant solution soaking process are often used to disperse after serious mud cake appears in the shield, but the use of oxalic acid has certain corrosion damage to the equipment, and the effects of other types of dispersant solutions are also quite different, especially Injection of dispersant solution during excavation to prevent mud cake is relatively rare and the effect is not obvious

Method used

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  • High-molecular water-soluble polymer residue soil dispersing agent
  • High-molecular water-soluble polymer residue soil dispersing agent
  • High-molecular water-soluble polymer residue soil dispersing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The polymer water-soluble polymer slag dispersant of the present embodiment is made up of the composition of following mass percent: sodium polyacrylate 18%, polyethylene glycol 4%, fatty acid polyethylene glycol fat 3%, fatty alcohol polyoxyethylene ether 5%, N-methylpyrrolidone 5%, water 65%.

[0024] The preparation process of the polymer water-soluble polymer slag dispersant of this embodiment is as follows: 18g sodium polyacrylate is added to 40g water and stirred until completely dissolved to obtain a sodium polyacrylate solution, and 5g fatty alcohol polyoxyethylene ether is added to 5g Stir in the N-methylpyrrolidone until completely dissolved to obtain a fatty alcohol polyoxyethylene ether solution, then mix the sodium polyacrylate solution with the fatty alcohol polyoxyethylene ether solution, and then add 4g polyethylene glycol and 3g fatty acid polyethylene glycol Alcohol, and add 25g of water and stir evenly to obtain a mixed solution, which is filtered to ...

Embodiment 2

[0029] The polymer water-soluble polymer slag dispersant of the present embodiment is made up of the composition of following mass percent: sodium polyacrylate 21%, polyethylene glycol 4%, fatty acid polyethylene glycol fat 3%, fatty alcohol polyoxyethylene ether 6%, N-methylpyrrolidone 6%, water 60%.

[0030] The preparation process of the polymer water-soluble polymer slag dispersant of this embodiment is as follows: 21g sodium polyacrylate is added to 35g water and stirred until completely dissolved to obtain a sodium polyacrylate solution, and 6g fatty alcohol polyoxyethylene ether is added to 6g Stir in the N-methylpyrrolidone until completely dissolved to obtain a fatty alcohol polyoxyethylene ether solution, then mix the sodium polyacrylate solution with the fatty alcohol polyoxyethylene ether solution, and then add 4g polyethylene glycol and 3g fatty acid polyethylene glycol Alcohol, and add 25g of water and stir evenly to obtain a mixed solution, which is filtered to ...

Embodiment 3

[0035] The polymer water-soluble polymer slag dispersant of the present embodiment is made up of the composition of following mass percent: sodium polyacrylate 24%, polyethylene glycol 4%, fatty acid polyethylene glycol fat 3%, fatty alcohol polyoxyethylene ether 6%, N-methylpyrrolidone 6%, water 57%.

[0036] The preparation process of the polymer water-soluble polymer slag dispersant of this embodiment is as follows: 24g sodium polyacrylate is added to 35g water and stirred until completely dissolved to obtain a sodium polyacrylate solution, and 6g fatty alcohol polyoxyethylene ether is added to 6g Stir in the N-methylpyrrolidone until completely dissolved to obtain a fatty alcohol polyoxyethylene ether solution, then mix the sodium polyacrylate solution with the fatty alcohol polyoxyethylene ether solution, and then add 4g polyethylene glycol and 3g fatty acid polyethylene glycol Alcohol, and add 22g of water and stir evenly to obtain a mixed solution, which is filtered to ...

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Abstract

The invention discloses a high-molecular water-soluble polymer residue soil dispersing agent, which is composed of the following components in percentage by mass: 18%-24% of sodium polyacrylate, 4% ofpolyethylene glycol, 3% of fatty acid polyethylene glycol ester, 5-6% of fatty alcohol polyoxyethylene ether, 5-6% of N-methylpyrrolidone and 57-65% of water. The anionic dispersing agent composed ofsodium polyacrylate and an auxiliary agent thereof is designed according to the chemical principle of mud cake formation of residual soil, the electrostatic adsorption binding force of soil aggregation is decomposed, the viscosity of soil is reduced, the dispersion effect is achieved, the problem of 'mud cake formation' in a cutterhead of a shield tunneling machine is effectively prevented and solved, the use process is simple, the dispersing effect is good, the construction pressure of the shield tunneling machine is greatly relieved, and the construction efficiency and safety are improved.

Description

technical field [0001] The invention belongs to the technical field of dispersants, and in particular relates to a polymer water-soluble polymer slag dispersant. Background technique [0002] During the construction process of the earth pressure balance shield, the peeled off muck is easy to adhere to the cutter head panel and the soil bin, thereby accumulating and forming a solid mud cake, commonly known as "mud cake". Since the application of the shield tunneling method, problems such as construction safety and construction progress caused by the problem of "mud cake" on the cutterhead have always plagued shield tunneling technicians. When shield tunneling is carried out in sandy gravel and mudstone composite strata, the occurrence of mud cake on the cutter head is relatively frequent, which greatly affects the normal progress of construction and increases the risk of construction. [0003] At present, oxalic acid and dispersant solution soaking process are often used to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02E21D9/06C10N30/04C10N10/02
CPCC10M173/02E21D9/0678C10M2209/082C10M2209/104C10M2209/109C10M2209/108C10M2215/223C10M2201/02
Inventor 穆世旭谭博张剑徐宏杨永强李成云张鑫
Owner CHINA RAILWAY FIRST GRP CO LTD
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