Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method of controlling the flow temperature of coal ash with high melting point

A technology with flow temperature and high melting point, applied in the production of combustible gas, gasification process, granular/powder fuel gasification, etc., can solve the problems of reducing the FT of coal ash, reducing the calorific value, insufficient representation, etc. volume, guaranteed calorific value, and low price

Active Publication Date: 2019-07-09
NORTHWEST UNIV
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of controlling the flow temperature of coal ash with high melting point
  • A method of controlling the flow temperature of coal ash with high melting point
  • A method of controlling the flow temperature of coal ash with high melting point

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for controlling the flow temperature of coal ash with high melting point, which is effective for coal ash less than 25% and Al in ash 2 o 3 For coal types with a content of less than 40%, the ash melting point is measured. For coal types with coal ash FT>1400°C caused by A / B>4.3, one or more coals are used to blend the coal with the coal type according to different qualities. , so that the ash A / B of the mixed coal is <4.3, and then ashing the mixed coal, and measuring the mixed ash FT. If the mixed coal ash FT meets the ideal operating temperature of the gasifier, use it directly; if the mixed coal ash FT FT does not meet the ideal operating temperature of the gasifier, and the coal ash is further regulated by adding additives. This method not only broadens the adaptability of high melting point coal ash to the entrained bed gasification process, but also reduces the amount of additives added while ensuring the calorific value of the mixed coal.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com