Coking fly ash-doped coal co-gasification method

A technology for coking dust removal and co-gasification, applied in the field of coal gasification, can solve the problems of affecting the health of workers, the proportion of coking dust removal into anthracite is low, and the coking dust removal can not be completely reused, etc. Melting temperature and viscosity temperature characteristics, solving the effect of narrow utilization range and reduction of raw material cost

Active Publication Date: 2015-10-28
KAILUAN GRP +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the actual production process, in order to ensure continuous and stable production, the proportion of coking dust ash mixed with coking coal should not exceed 20% of the coal sample used for coking. The proportion is less (≤5%), which makes the large amount of coking dust generated in the coking plant unable to be completely reused, and the coking dust generated in some coking plants is accumulated in the factory area, and the granular dust generated seriously affects the health of the staff

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
  • Coking fly ash-doped coal co-gasification method
  • Coking fly ash-doped coal co-gasification method
  • Coking fly ash-doped coal co-gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] 1) Collect coal samples and coking dedusting ash (hereinafter referred to as dedusting ash), and grind them separately until the particle size is below 0.2 mm.

[0019] 2) The ground coal sample and the dedusted ash were analyzed for ash content, volatile matter, ash chemical composition, ash melting temperature and CO 2 Gasification reactivity measurement, see Table 1-4 for specific measurement results, wherein coal sample 1 is the sample coal sample, and coal sample 2 is the control coal sample;

[0020] 3) According to the ash content, volatile matter, ash chemical composition, ash melting temperature and CO 2 For the gasification reactivity measurement, mix the dedusted ash and the coal sample at a mass ratio of (14-18):100 to obtain a mixed coal sample, so that the ash content of the mixed coal sample is 18%-20%, and the volatile content is 6%-8 %, the ratio of acidic oxides to basic oxides in the ash is 4.8-5.2, the ash flow temperature is 1340-1380°C, CO 2 Gasi...

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 coking fly ash-doped coal co-gasification method belongs to the field of a coal gasification technology. The method comprises the following steps: 1) a coal sample and coking fly ash respectively undergo ash content, volatile component, ash chemical composition, ash fusion temperature and CO2 gasification reactivity measurements; 2) the coal sample and coking fly ash are mixed in proportion according to ash content, volatile component, ash chemical composition, ash fusion temperature and CO2 gasification reactivity index R0.5 of the coal sample and coking fly ash, so as to obtain a mixed coal sample; and 3) the mixed coal sample is sent into a gasification furnace to be gasified. By the coking fly ash-doped coal co-gasification, yield of effective gas can be increased, and cost of raw materials is remarkably reduced so as to raise economic benefit of a coal gasification enterprise. Meanwhile, coking fly as generated from a coking enterprise is reused, and the problem that lots of coking fly ash is piled-up and cannot be processed is solved for the coking enterprise.

Description

technical field [0001] The invention belongs to the technical field of coal gasification, and in particular relates to a co-gasification method of coking dust and dust mixed with coal. Background technique [0002] Coking plants will produce a large amount of dust removal ash in the traditional coal charging and coke pushing process, especially in recent years, with the application of CDQ technology, the output of dust removal ash in coking plants is increasing day by day. According to statistics, the output of coking dust removal ash Accounting for about 4% of the total output of coke, the accumulation of a large amount of dust not only causes waste of resources, but also pollutes the environment. The test and analysis show that coking dust has the characteristics of high fixed carbon content, low volatile matter and high content of alkaline components. Therefore, most existing enterprises mix coking dust back into coking, or replace part of anthracite with dust as a The b...

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
IPC IPC(8): C10J3/46
Inventor 崔建方李寒旭张雷宁利民刘象严加才辛宇王亚涛
Owner KAILUAN GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap