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A kind of production method of high concentration coal water slurry

A production method and high-concentration water technology, applied in the field of coal chemical industry, can solve the problems of unsatisfactory stability and dispersibility of ordinary coal-water slurry, high preparation cost, water separation stratification, etc. Low manufacturing cost and good stability

Active Publication Date: 2021-11-12
FUJIAN QINGYUAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The optimized particle size distribution of coal is an important factor determining the quality of coal water slurry. The core of the technology for preparing high-concentration coal water slurry by optimizing particle size distribution is the preparation of fine coal water slurry. Due to the lack of preparation methods of coal water slurry in the prior art, For example, in order to increase the concentration of coal-water slurry, the coal material is repeatedly classified, screened and ground, which leads to high preparation costs. At the same time, the stability and dispersibility of ordinary coal-water slurry are not ideal, so that the slurry can be stored for a long time. During the process, it is easy to cause water separation on the surface of the slurry and precipitation inside the slurry

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  • A kind of production method of high concentration coal water slurry

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Embodiment 1

[0024] A production method of high-concentration coal-water slurry, wherein the raw material coal is selected from the coal produced by Xinjiang Ningjiang Industry and Trade, and the specific production method includes the following steps:

[0025] S1: Crushing the raw coal to obtain dry coal powder;

[0026] S2: Blend the dry coal powder, water and electrolyte salt at a slow speed using a stirring device, and then sieve the blended mixture to obtain the first liquid slurry and the insoluble insoluble slurry respectively. material;

[0027] S3: Dehydrate and upgrade the insoluble material obtained after sieving in S2 to obtain dry powder, and finely grind the powder, and then use the two-dimensional powder mixer to process the finely ground powder and chemical additives kneading process;

[0028] S4: Add adhesive and water to the first slurry obtained in S2, and obtain the second slurry after uniform stirring and mixing;

[0029] S5: Add the powder obtained after kneading i...

Embodiment 2

[0039] A production method of high-concentration coal-water slurry, wherein the raw material coal is selected from Shenmu coal produced in Shanxi, and the specific production method includes the following steps:

[0040] S1: Crushing the raw coal to obtain dry coal powder;

[0041] S2: Blend the dry coal powder, water and electrolyte salt at a slow speed using a stirring device, and then sieve the blended mixture to obtain the first liquid slurry and the insoluble insoluble slurry respectively. material;

[0042] S3: Dehydrate and upgrade the insoluble material obtained after sieving in S2 to obtain dry powder, and finely grind the powder, and then use the two-dimensional powder mixer to process the finely ground powder and chemical additives kneading process;

[0043] S4: Add adhesive and water to the first slurry obtained in S2, and obtain the second slurry after uniform stirring and mixing;

[0044] S5: Add the powder obtained after kneading in S3 to the second slurry ob...

Embodiment 3

[0054]A production method of high-concentration coal-water slurry, wherein the raw material coal is selected from the coal produced in Hulunbeier, Inner Mongolia. The specific production method includes the following steps:

[0055] S1: Crushing the raw coal to obtain dry coal powder;

[0056] S2: Blend the dry coal powder, water and electrolyte salt at a slow speed using a stirring device, and then sieve the blended mixture to obtain the first liquid slurry and the insoluble insoluble slurry respectively. material;

[0057] S3: Dehydrate and upgrade the insoluble material obtained after sieving in S2 to obtain dry powder, and finely grind the powder, and then use the two-dimensional powder mixer to process the finely ground powder and chemical additives kneading process;

[0058] S4: Add adhesive and water to the first slurry obtained in S2, and obtain the second slurry after uniform stirring and mixing;

[0059] S5: Add the powder obtained after kneading in S3 to the seco...

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Abstract

The invention relates to the technical field of coal chemical industry, and in particular to a production method of high-concentration coal-water slurry. The specific production method includes crushing raw coal to obtain dry coal powder, and mixing the dry coal powder with water and electrolyte salt in the Blending at a slow speed, and then statically sieve the blended mixed solution to obtain the first liquid slurry and insoluble insoluble material respectively, and dehydrate the insoluble material obtained after sieving in S2 Operation steps such as quality improvement; the preparation method provided by the invention has relatively low manufacturing cost and is fully applicable to different types of raw coal. After initial blending of coal materials and static screening, the insoluble materials are finely ground and mixed with The method of additive blending can effectively increase the gap between the filled coal particles to increase the overall concentration of the slurry, and the produced coal-water slurry product has good stability, which meets the requirements of continuous, low energy consumption and stable production process of coal-water slurry.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a production method of high-concentration coal-water slurry. Background technique [0002] Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable oil-substituting coal-based fluid fuel obtained by physical processing of about 65% coal, 34% water and 1% additive. It has changed the traditional coal The combustion method shows a huge advantage in environmental protection and energy saving. Especially in recent years, after adopting the technical route of waste recycling, the environmentally friendly coal-water slurry has been successfully developed, which can greatly improve the efficiency of coal-water slurry without increasing costs. With the protection of my country's abundant coal resources, coal water slurry has become the most basic and economical clean energy to replace oil, gas and other energy sources. [0003] The optimized particle si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/32F23K1/02
CPCC10L1/326F23K1/02
Inventor 陈珍喜刘剑锋郑文国王伟锋王伟聪杨正兴朱旭东王维夏敏
Owner FUJIAN QINGYUAN TECH