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

A melting gasifier and a process for treating gasifier ash based on it

A melting gasifier and ash slag technology, applied in the field of coal chemical industry, can solve the problems of poor environmental protection benefits, heavy burden on enterprises, high cost, etc.

Active Publication Date: 2020-10-23
XIAN UNIV OF SCI & TECH +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not disposed of properly, not only the environmental benefits will be poor, but also the cost will be high and the burden on the enterprise will be heavy.

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 melting gasifier and a process for treating gasifier ash based on it
  • A melting gasifier and a process for treating gasifier ash based on it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Usually, the coal gasification slag content after standing still is water: 63.1%, ash: 74.81%, volatile matter: 2.81%, sulfur: 0.36% and fixed carbon: 8.26%.

[0047] Present embodiment technological step is as follows:

[0048] 1) Stand still: After the ash from the gasifier is left standing in the buffer tank for 6-8 hours, its water content is about 60%. .

[0049] 2) Exchange heat between the ash with a water content of 60% and the high-temperature synthesis gas discharged from the top of the melter-gasifier, so that the temperature of the ash can rise to 1300° C., and at the same time achieve the purpose of reducing the temperature of the crude synthesis gas.

[0050] 3) Proportion the coal and the ash whose temperature has been raised to 1300°C, and then pass it into the melter gasifier with an appropriate amount of oxygen to carry out the oxidation reaction. The feed ratio of coal to ash is 1.87, and The ratio was 1.64. The process simulation process stipulate...

Embodiment 2

[0056] The gasification slag is mainly composed of SiO 2 、Al 2 o 3 , CaO and carbon residue, etc. The composition is very similar to that of glass-ceramics, so the ash from the gasification furnace is used to make glass-ceramic ceramics, and the molten material from the melting and gasification furnace is the molten glass frit, which is then shaped , annealing, cutting and other processes can be made into glass-ceramics. The process of making glass-ceramics is roughly: basic glass frit preparation-grinding-mixing-melting-clarification-forming-annealing-cutting-laying-sintering-polishing-packaging. Using this process in connection with the melting and gasifying furnace of the present invention will greatly reduce the production cost of glass-ceramics. The melting and gasifying furnace can be used as the melting process of the glass kiln, and the subsequent molding and annealing processes can be continuous. At the same time, glass-ceramic can produce different glass-ceramics ...

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

The present invention discloses a melting gasifier and a process for treating gasifier ash based on the same. It belongs to the technical field of coal chemical industry. The melting gasifier disclosed by the present invention is a vertical structure with a through line, including a furnace, a melting zone and a The slag discharge area adopts a two-stage structure with reasonable structure design, high gasification efficiency, small footprint and convenient use. The process method of the present invention utilizes a drying and melting furnace for gasification. After the gasification furnace ash is gasified in the melting furnace, the residual carbon content is reduced and used as a building raw material for later use. The synthesis gas after drying the ash and slag passes through the heat exchanger to change the temperature. When it is lowered to 100°C, it will be used as a raw material for downstream products, and the steam discharged from the heat exchanger can be used for work through the gas turbine. This process not only realizes the secondary utilization of ash and slag, saves the space and cost of ash and slag treatment, but also avoids the pollution caused by ash and slag, achieving the goals of high efficiency and low energy consumption.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and relates to a melting gasification furnace and a process for treating gasification furnace ash based on the same. Background technique [0002] Coal-to-methanol, coal-to-oil, coal-to-olefins and other new coal chemical industries led by coal gasification are important means for clean utilization of coal, while entrained bed gasification, the mainstream technology of gasification, will produce a large amount of gas in the process of coal gasification Gasification ash, coal gasification ash includes two parts: coarse slag (gasification slag) and fine slag (black water filter cake). SiO 2 、Al 2 o 3 , CaO and residual carbon, etc., with an average residual carbon content of more than 20%. According to statistics, in 2016, the country produced about 12 million tons of fine slag and 20 million tons of coarse slag. According to the national standard "Fly Ash Used in Cement and Conc...

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): C10J3/72C10J3/48C10J3/52C10J3/56
CPCC10J3/48C10J3/52C10J3/56C10J3/723C10J2300/0959C10J2300/0976C10J2300/1625C10J2300/1631
Inventor 李建伟雷姣姣魏荣朱江林辛欣黄洪
Owner XIAN UNIV OF SCI & TECH
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