Coal water slurry additive and preparation method thereof

An additive and coal-water slurry technology, which is applied in the fields of fuel additives, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems of poor stability and easy precipitation, inconsiderate changes in coal quality and stability, and increased viscosity, and achieves a solution to the problem. Poor stability, improving molecular structure characteristics and coal-water interfacial tension, improving stability

Pending Publication Date: 2022-04-08
麦道科技(佛山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing coal water slurry additives do not consider the change of coal quality and stability well. After the addition amount increases, the stability is poor and easy to precipitate, or the viscosity also increases.
[0004] Therefore, the existing technology has a large room for improvement

Method used

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  • Coal water slurry additive and preparation method thereof
  • Coal water slurry additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A coal water slurry additive comprises the following components in terms of mass percentage: 15% of aliphatic surfactant, 65% of naphthalene water reducer, 15% of complexing agent and 5% of inorganic base.

[0019] The aliphatic surfactant is alkali lignin; the naphthalene water reducer is sodium methylene dinaphthalene sulfonate; the complexing agent is sodium tripolyphosphate; and the inorganic base is sodium hydroxide.

[0020] The preparation method of the coal-water slurry additive comprises the following steps: weighing the raw materials of each component according to the proportion and mixing them uniformly to obtain the coal-water slurry additive.

Embodiment 2

[0022] A coal water slurry additive comprises the following components in terms of mass percentage: 20% of aliphatic surfactant, 50% of naphthalene water reducer, 20% of complexing agent and 10% of inorganic base.

[0023] The aliphatic surfactant is alkali lignin; the naphthalene-based water reducer is β-naphthalenesulfonate formaldehyde condensate (HSN naphthalene-based high-efficiency water-reducer produced by Qingdao Hongxia Polymer Materials Co., Ltd.) ; The complexing agent is trisodium phosphate; The inorganic base is potassium hydroxide.

[0024] The preparation method of the coal-water slurry additive comprises the following steps: weighing the raw materials of each component according to the proportion and mixing them uniformly to obtain the coal-water slurry additive.

Embodiment 3

[0026] A coal-water slurry additive comprises the following components in terms of mass percentage: 30% of aliphatic surfactant, 65% of naphthalene-based water reducer, and 5% of inorganic base.

[0027] The aliphatic surfactant is alkali lignin; the naphthalene water reducer is sodium methylene dinaphthalene sulfonate; the complexing agent is sodium tripolyphosphate; and the inorganic base is sodium carbonate.

[0028] The preparation method of the coal-water slurry additive comprises the following steps: weighing the raw materials of each component according to the proportion and mixing them uniformly to obtain the coal-water slurry additive.

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Abstract

The invention relates to a coal water slurry additive which comprises the following components in percentage by mass: 15-25% of an aliphatic surfactant, 35-65% of a naphthalene water reducer, 15-25% of a complexing agent and 5-15% of inorganic alkali. According to the invention, by adding the aliphatic surfactant and the naphthalene water reducer and adjusting the ratio of the aliphatic surfactant and the naphthalene water reducer, the molecular structure characteristics and the coal-water interfacial tension of the additive can be improved, and the additive has a stable function while improving the dispersion and viscosity reduction performance; by adding the complexing agent, adverse effects of calcium and magnesium ions and the like in water on the performance of the coal water slurry can be prevented, so that the stability of the additive applied to production of the coal water slurry is further improved, and the technical problem that an existing coal water slurry additive is relatively poor in stability is effectively solved.

Description

technical field [0001] The invention relates to the technical field of coal-water slurry treatment, in particular to a coal-water slurry additive and a preparation method thereof. Background technique [0002] Coal water slurry is a new, efficient and clean coal-based fuel, which is a low-pollution, high-efficiency product obtained by physical processing of 65-70% coal, 29-34% water and about 1% chemical additives. , Oil-substituting coal-based fluid fuel that can be transported by pipeline. It has changed the traditional way of burning coal, showing great advantages in environmental protection and energy saving. Under the protection of my country's rich coal resources, coal water slurry has also become the most basic and economical clean energy to replace oil, gas and other energy sources. The performance of coal water slurry is inseparable from the chemical additives added. [0003] Most of the existing coal water slurry additives do not take into account the change of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C10L1/32C10L10/00C10L10/18C10L1/12C10L1/18C10L1/222C10L1/24
Inventor 肖光涛黄惠芳
Owner 麦道科技(佛山)有限公司
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