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Efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag

A kind of flux and high-efficiency technology, used in fuel additives, petroleum industry, fuel and other directions, can solve the problems affecting the stable operation of the gasifier, difficult to overcome the problem of slag blocking, and increase the ash content, so as to improve the viscosity-temperature characteristics and improve the melting point. Features, the effect of reducing operating costs

Inactive Publication Date: 2010-03-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, the flux used in the Shell coal gasifier is limestone, the addition amount is 8-10%, which increases the ash content, and it is still difficult to overcome the slag blocking problem under the condition of coal quality fluctuations, which affects the stability of the gasifier run

Method used

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  • Efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag
  • Efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag
  • Efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: be 10% magnesium-containing ore powder by mass percent, 90% calcium-magnesium-containing ore powder fully mix and make flux, then with 2~6% (with coal as benchmark, quality is the coal of 100 parts The proportion of flux added in) is added to the Shell gasification coal, and mixed evenly.

Embodiment 2

[0020] Embodiment 2: being 20% ​​magnesium-containing ore powder by mass percent, 80% calcium-magnesium-containing ore powder is fully mixed and made flux: then with 2~6% (based on coal, quality is 100 parts of coal The proportion of flux added in) is added to the Shell gasification coal, and mixed evenly.

Embodiment 3

[0021] Embodiment 3: being 30% magnesium-containing ore powder by mass percent, 70% calcium-magnesium-containing ore powder fully mixes and makes flux, then with 2~6% (taking coal as benchmark, quality is 100 parts of coal The proportion of flux added in) is added to the Shell gasification coal, and mixed evenly.

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Abstract

The invention provides an efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag. The efficient composite fluxing agent is compounded by two or more ore powders containing basic oxides. The efficient composite fluxing agent comprises the components by weight percentage of 12-30% of MgO and 3-30% of CaO. As for the coals at the mine field in the northern Anhui province, when the addition amount is 2-6%, the melting temperature of the pulverized coal can be reduced from 1500 DEG C to below 1400 DEG C, the viscosity of the pulverized coal can be ranged from 2 to 25 Pa*s, thus effectively improving the melting characteristic of the coals in the mine field in the northern Anhui province. The fluxing agent can be used for replacing lime stone fluxing agent and the addition amount is only half of that of the lime stone.

Description

technical field [0001] The present invention relates to a high-efficiency composite flux that improves the melting characteristics of fly coal gasification ash, in particular, relates to a high-efficiency composite flux that can effectively reduce the melting temperature of Shell gasification coal ash. The method can effectively reduce the melting temperature of the coal ash within the range of the added amount, and can change the viscosity-temperature characteristics of the ash to a certain extent, so that the ash and slag can be discharged smoothly, and belongs to the field of flux. Background technique [0002] A flux is an additive that melts a substance with a high melting point at a lower temperature. It is generally believed that the addition of flux can use its earlier liquid phase to accelerate the diffusion of ions and promote the reaction, thereby melting the substance. At present, flux is widely used in various industries. In the field of iron and steel, with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L10/06
Inventor 盛新李寒旭李继炳韩启元魏雅娟石旵东纪明俊成雷王俊汪永庆
Owner CHINA PETROLEUM & CHEM CORP
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