Lignin-free coal water slurry additive and coal water slurry prepared therefrom

A coal-water slurry and additive technology, which is used in fuel additives, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems affecting the preparation of coal slurry additives and insufficient supply of lignin raw materials, and achieves enhancement of electrostatic repulsion and improvement of hydrophilicity. Sex, resolving ineffective effects

Pending Publication Date: 2020-05-15
苏州永峰联环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the insufficient supply of lignin raw materials affects the preparation of coal slurry additives, to provide a lignin-free coal water slurry additive and the coal water slurry prepared by it, through a variety of high-performance polymers as Additive raw materials, without adding lignin to produce new coal-water slurry additives, mainly through the synthetic dispersant as the main raw material of additives, can improve and stabilize the performance of coal-water slurry additives, and obtain better than lignin as additives to produce water-based coal Better coal slurry quality of the slurry

Method used

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  • Lignin-free coal water slurry additive and coal water slurry prepared therefrom
  • Lignin-free coal water slurry additive and coal water slurry prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At normal temperature and pressure, 30wt% of naphthalenesulfonic acid formaldehyde condensate, 30wt% sodium polystyrene sulfonate, 20wt% alkylphenol polyoxyethylene ether and 20wt% sulfonated melamine formaldehyde condensate were mixed in In the reaction container, add water to dilute and stir for 30-60 minutes until the stirring is uniform, and a liquid coal-water slurry additive with a solid content of 30% is obtained.

Embodiment 2

[0030] Under normal temperature and pressure, 40wt% naphthalenesulfonic acid formaldehyde condensate, 20wt% sodium polystyrene sulfonate, 10wt% alkylphenol polyoxyethylene ether and 30wt% sulfonated melamine formaldehyde condensate are mixed in In the reaction container, add water to dilute and stir for 30-60 minutes until the stirring is uniform, and a liquid coal-water slurry additive with a solid content of 30% is obtained.

Embodiment 3

[0032] Under normal temperature and pressure, mix 50wt% naphthalenesulfonic acid formaldehyde condensate, 35wt% sodium polystyrene sulfonate, and 15wt% alkylphenol polyoxyethylene ether in a reaction vessel, dilute with water and stir for 30- 60 minutes until the mixture is evenly stirred to obtain a liquid coal-water slurry additive with a solid content of 30%.

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Abstract

The invention discloses a lignin-free coal water slurry additive and coal water slurry prepared therefrom. The additive comprises a naphthalene dispersant, polystyrene sulfonate, a polyoxyethylene nonionic synthetic dispersant and a sulfonated melamine formaldehyde condensate. Through the synergistic effect of a plurality of polymer dispersants and the synergistic effect of anions and non-ions, the additive can obviously reduce the viscosity of coal slurry, improve the fluidity and stability of coal slurry, achieve a better treatment effect than a coal slurry additive containing lignin, and can be used for preparing high quality coal water slurry with a higher concentration at the same time.

Description

technical field [0001] The invention relates to the technical field of coal fuel preparation, in particular to a lignin-free coal-water slurry additive and the coal-water slurry prepared therefrom. Background technique [0002] Coal-water slurry is a coal-based liquid fuel that emerged in the 1970s. It can be used as a furnace fuel or a raw material for syngas, and has the advantages of stable combustion and low pollution emissions. Coal slurry is a low-pollution, high-efficiency, pipeline-transportable oil-substituting coal-based fluid fuel obtained by physical processing of about 50-70% mass fraction of coal, 1% mass fraction of additives, and water. Fluidity and stability, easy storage, atomized combustion, is a relatively cheap clean fuel with high combustion efficiency and low pollution, and can replace heavy oil to alleviate the energy security problem of oil shortage. The emergence of coal water slurry has changed the traditional way of coal combustion, showing a hug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/198C10L1/24
CPCC10L1/143C10L1/198C10L1/24C10L1/2437C10L1/326C10L2300/20
Inventor 高峰王亚洲赵开封罗延生
Owner 苏州永峰联环保科技有限公司
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