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

Precombustion tar-removal coal gas preparation method

A technology of coal gas and tar, which is applied in the field of gas preparation for pre-burning tar, can solve the problems of toxic phenol water and environmental pollution, and achieve the effects of prolonging the reaction time, avoiding environmental pollution, and avoiding phenol water pollution

Inactive Publication Date: 2015-06-17
罗世学
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many existing coal gas preparation methods in my country inevitably produce a large amount of tar while generating coal gas. Special equipment and processes are required to extract tar, and toxic phenol water will be produced. Improper treatment will cause serious environmental pollution.

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
  • Precombustion tar-removal coal gas preparation method
  • Precombustion tar-removal coal gas preparation method
  • Precombustion tar-removal coal gas preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] refer to Figure 1-2 In Example 1, coal is added into the pre-combustion furnace 1 from the coal inlet 1-1 of the pre-combustion furnace, and the furnace flame temperature of the pre-combustion furnace 1 is above 1300 ° C. 1. Air and a certain amount of water vapor are introduced into the chamber, and their functions are to support combustion and cool down the grate respectively, and part of the water vapor also acts as a gasifying agent. Under the high temperature condition above 1300°C in the pre-combustion furnace 1, macromolecules of volatile phenol (tar) are decomposed, and some of them are oxidized to release heat and generate CO 2 And water, so the tar component in the pre-combustion furnace gas is greatly reduced. Use the grate 1-4 in the pre-combustion furnace (it can be a reciprocating grate or a chain grate) to push the hot coal 3 in the pre-combustion furnace 1 into the main gas generator 2, and the hot coal 3 is in the main gas generator 2 Inner stacking ...

Embodiment 2

[0020] refer to Figure 3-4 In Example 2, coal is fed into the pre-combustion furnace 1 from the coal inlet 1-1 of the pre-combustion furnace. Air and an appropriate amount of water vapor are fed in, and their functions are to support combustion and cool down the grate, and part of the water vapor also acts as a gasifying agent. Under the high temperature condition above 1300°C in the pre-combustion furnace 1, macromolecules of volatile phenol (tar) are decomposed, and some of them are oxidized to release heat and generate CO 2 And water, so the pre-combustion furnace gas contains only a very small amount of tar components. Utilize the grate 1-4 in the pre-combustion furnace (it can be a reciprocating grate or a chain grate) to push the hot coal 3 in the pre-combustion furnace 1 into the main gas generator 2 through the double-layer sealed material door 4, and the hot coal 3 is piled up in the main gasifier 2 and forms a full-height carbon layer space thermal field. The dou...

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 invention relates to the technical field of coal chemical industry, in particular to a precombustion tar-removal coal gas preparation method. The method can directly generate tar-free coal gas or coal gas with very low tar content. The invention aims to provide the method for preparing the tar-free coal gas or the coal gas with very low tar content, the method can utilize various types of coals to directly generate the tar-free coal gas or the coal gas with very low tar content, and the gas production efficiency is high. The method comprises a precombustion step. In the precombustion step, coal burns in a precombustion furnace, and the hearth temperature is more than 1300 DEG C, so that tar is decomposed and burns. A small amount of gasification agent is introduced, precombustion furnace coal gas is generated, and the hot coal is input into a main coal gas producer. The precombustion furnace coal gas and main coal gas producer coal gas are mixed to prepare the coal gas with low tar content, or the precombustion furnace coal gas is introduced into a main reaction furnace coal layer to prepare the tar-free coal gas.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a method for preparing tar-free gas by pre-combustion, which can directly generate tar-free or extremely low-tar gas. Background technique [0002] Coal gasification refers to the use of carbon-containing fuels (coal, coal coke, or biomass, etc.) A series of chemical reactions occur under temperature and pressure to convert solid fuel into CO, H 2 、CH 4 Process such as combustible gas. Many existing coal gas preparation methods in my country will inevitably produce a large amount of tar while generating coal gas. Special equipment and processes are needed to extract tar, and toxic phenol water will be produced. Improper treatment will cause serious environmental pollution. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a tar-free or very low tar content gas preparation method that does not produce p...

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 Applications(China)
IPC IPC(8): C10J3/00
CPCC10J3/16C10J3/721C10J2300/093C10J2300/0956C10J2300/0976C10J2300/1606
Inventor 罗世学蒋俊华
Owner 罗世学
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