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Method for regulating and controlling flowing temperature of high-melting-point coal ash

A technology with flow temperature and high melting point, applied in gasification process, petroleum industry, manufacture of combustible gas, etc., can solve the problems of reducing FT of coal ash, reducing calorific value, insufficient representation, etc., to reduce the amount of addition and ensure the calorific value. , the effect of low price

Active Publication Date: 2017-05-17
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is only researched on the basis of three kinds of coal ash with high melting point, and its representativeness is slightly insufficient. Moreover, when adjusting the FT of coal ash, it is carried out by adding ore-based flux. While reducing the FT of coal ash, it is also Increased ash content and reduced calorific value of coal

Method used

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  • Method for regulating and controlling flowing temperature of high-melting-point coal ash

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Embodiment 1

[0044] (1) Select typical Jincheng anthracite (JC) with high melting point and Xiangyang coal (XY) with low melting point to conduct industrial analysis and analysis of various components in coal ash to analyze whether the ash content is higher than 25%, Al 2 o 3 Whether the content is higher than 40%. According to industrial analysis, the ash content of the two coals is less than 25%, Al 2 o 3 The content is less than 40%.

[0045] (2) Calculate the A / B of different proportions according to the ash analysis results, and the results are shown in Table 1.

[0046] Table 1 Analysis of the mixed coal ash of Xiangyang coal and Jincheng anthracite

[0047] project SiO 2

A1 2 o 3

Fe 2 o 3

CaO MgO TiO 2

A / B JC 47.00 33.55 7.99 5.16 1.60 0.85 5.52 10%XY 45.75 31.04 8.85 7.00 1.71 0.84 4.42 20%XY 44.43 30.45 9.76 8.94 1.82 0.83 3.69 30%XY 43.05 28.79 10.7 10.97 1.94 0.82 3.08 40%XY 41....

Embodiment 2

[0061] (1) Select typical high melting point Jincheng anthracite (JC) and Shenhua coal direct liquefaction residue (DCLR) for industrial analysis and analysis of various components in coal ash to analyze whether the ash content is higher than 25%, Al 2 o 3 Whether the content is higher than 40%. The ash content of both samples was less than 25% by industrial analysis.

[0062] (2) Calculate the A / B of different proportions according to the ash analysis results, and the results are shown in Table 3.

[0063] Table 3 Analysis of mixed coal ash of Shenhua coal direct liquefaction residue and Jincheng anthracite

[0064] project SiO 2

A1 2 o 3

Fe 2 o 3

CaO MgO TiO 2

A / B JC 47.00 33.55 7.99 5.16 1.60 0.85 5.52 10%DCLR 44.86 31.54 9.47 6.00 1.55 0.95 4.55 20%DCLR 42.64 29.45 11.00 6.87 1.49 1.05 3.78 30%DCLR 40.33 27.27 12.60 7.77 1.43 1.16 3.15 40%DCLR 37.93 25.02 14.25 8.71 1.37...

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Abstract

The invention discloses a method for regulating and controlling the flowing temperature of high-melting-point coal ash. The method comprises the following steps: measuring the ash melting point of a type of coal of which the coal ash is lower than 25 percent and the Al2O3 content in the ash is lower than 40 percent, blending a type of coal, of which the coal ash FT is larger than 1,400 DEG C since A / B is larger than 4.3, with one or more types of coal according to different masses, so that the coal ash A / B of the blended coal is less than 4.3, then ashing the blended coal, measuring blended coal ash FT, and directly using the blended coal ash if the blended coal ash FT satisfies the ideal operation temperature of a gasifying furnace; if the blended coal ash FT does not satisfy the ideal operation temperature of the gasifying furnace, further regulating and controlling the coal ash by adding an assistant. By adopting the method, the adaptability of the high-melting-point coal ash to a gasifying process of an entrained flow bed is improved, the calorific value of the blended coal is ensured, and meanwhile the adding amount of the assistant is reduced.

Description

technical field [0001] The invention belongs to the field of coal entrained bed gasification, and in particular relates to a method for regulating the flow temperature of coal ash with high melting point. Background technique [0002] As we all know, China's energy structure is poor in oil, low in gas, and relatively rich in coal, so that China's coal-dominated pattern will not change for a long time. Compared with oil and natural gas, coal is a highly polluting energy source. For this reason, the future development of coal must follow a high-tech, low-pollution road. Among them, coal gasification is the "leader" and foundation for the clean utilization of coal. Entrained bed gasification technology has become the main development direction in the future due to its advantages of large production capacity and high conversion rate. The requirements for ash content of entrained bed gasifiers are generally between 5% and 25%, and the operating temperature is generally 1400-1600...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46
CPCC10J3/466C10J2300/0903C10J2300/093C10J2300/0983
Inventor 谢良才徐龙王康付柯马晓迅
Owner NORTHWEST UNIV(CN)
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