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Composition for regulating high-alkali coal, regulating method and application

A high-alkali coal and composition technology, applied in the field of coal ash chemistry, can solve the problems of ash on the surface of the equipment and the poor slag hanging effect of the water-cooled wall, and achieve the goal of reducing the amount, reducing the difficulty and labor intensity of production operations, and expanding the scope of application. Effect

Inactive Publication Date: 2019-10-01
DATANG INT CHEM TECH RESINST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the present invention aims to provide a composition for regulating the coal ash melting and deposition performance of high-alkali coal and a method for regulating high-alkali coal, which can solve the problem of water cooling during gasification or combustion of high-alkali coal Problems such as poor effect of hanging slag on the wall and dust accumulation on the surface of equipment, etc., and realize the reduction and utilization of nearby solid waste such as fly ash and coal ash

Method used

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  • Composition for regulating high-alkali coal, regulating method and application
  • Composition for regulating high-alkali coal, regulating method and application
  • Composition for regulating high-alkali coal, regulating method and application

Examples

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Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the Xinjiang Zhundong high-alkali coal is processed by the high-alkaline raw coal crushing and weighing system 1, and then fully mixed with the fly ash from the by-product fly ash collection system 5 of the project in the ash-increasing and anti-sedimentation agent mixing system 2 And ground into fine coal powder, then sent to the gasification unit 3 and power unit 4 respectively, the fly ash generated after gasification or combustion is sent to the by-product fly ash collection system 5 of the project, and the coal ash is sent to the project By-product coal ash collection system6.

[0043] Regularly sample the fly ash in the by-product fly ash collection system 5 of the project, and check whether the alkali-acid ratio (B / A) in the ash component is ≤0.1, and judge whether the batch of fly ash can be used as ash increasing Depressants.

[0044] If the test finds that the fly ash by-product of the project has an alkali-acid ratio (B / A) > 0.1, it...

Embodiment 2

[0046] Such as figure 2 As shown, Xinjiang Zhundong high-alkali coal is processed by the high-alkaline raw coal crushing and weighing system 1, and then fully mixed with the coal ash from the project coal ash crushing and pulverizing system 7 in the ash-increasing and anti-sedimentation agent mixing and pulverizing system 2 And ground into fine coal powder, then sent to the gasification unit 3 and power unit 4 respectively, the fly ash generated after gasification or combustion is sent to the by-product fly ash collection system 5 of the project, and the coal ash is sent to the project By-product coal ash collection system6.

[0047] Regularly sample the coal ash in the by-product coal ash collection system 6, and check whether the alkali-acid ratio (B / A) in the ash component is ≤0.1, so as to judge whether the batch of coal ash can be used to increase ash and suppress sedimentation agent.

[0048] If the test finds that the alkali-acid ratio (B / A) of the coal ash slag prod...

Embodiment 3

[0050] Such as image 3 As shown, after the Xinjiang Zhundong high-alkaline coal is processed by the high-alkaline raw coal crushing and weighing system 1, it is fully mixed with the fly ash from the purchased ash-increasing and anti-sedimentation agent storage tank 8 in the ash-increasing and anti-sedimentation agent mixing system 2. Mixed and ground into fine coal powder, then sent to the gasification unit 3 and power unit 4 respectively, the fly ash generated after gasification or combustion is sent to the by-product fly ash collection system 5 of the project, and the coal ash is sent to the Project by-product coal ash collection system 6.

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Abstract

The invention provides a composition for regulating the coal ash melting property and deposition performance of high-alkali coal and a regulating method and application thereof. The composition comprises high-alkali coal and an ash-increasing and settling-inhibition agent, wherein the ash-increasing and settling-inhibition agent is one or more of coal gangue, fly ash and coal ash slag, and the content of the ash-increasing and settling-inhibition agent is 0.1-10.0 wt% of received base coal. The ash-increasing and settling-inhibition agent is one or more of coal gangue, fly ash and coal ash slag, and the content of the ash-increasing and settling-inhibition agent is 0.1-10.0 wt% of the received base coal. The problems can be solved that the slag adhering effect of a water-cooled wall is poor and ash is accumulated on the surface of a heat exchanger because of the characteristics of the high alkali coal such as low ash, low ash melting point and high-alkali metal content, and the composition contributes to the reduction of solid wastes such as fly ash and the utilization of nearby resources.

Description

technical field [0001] The invention belongs to the field of coal ash chemistry, and specifically relates to a composition, a control method and an application for regulating the coal ash melting performance and deposition performance of high-alkali coal. Background technique [0002] In recent years, high-alkali coal with abundant reserves (equivalent Na in dry basis coal ash 2 (0>2% by weight) is gradually increasing in energy, chemical and other industries. However, the conversion and utilization of high-alkali coal in gasification and combustion are faced with two restrictive factors: one is low ash and difficult to hang slag. The characteristics of ash melting point (flow temperature <1200°C), no slag or uneven slag hanging on the water wall of the gasifier, it is difficult to realize the demand of "resisting slag with slag", which accelerates the thermal impact of the material of the water wall of the gasifier Second, high alkali is easy to accumulate ash. K an...

Claims

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Application Information

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IPC IPC(8): C10L5/02C10L9/00C10L10/04
CPCC10L5/02C10L9/00C10L10/04
Inventor 李春启杨明顺康善娇梅长松刘卫兵齐永丽刘鑫宋学平赵瑞同
Owner DATANG INT CHEM TECH RESINST
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