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

Circulating fluidized bed pulverized coal pyrolysis-gasification device and pulverized coal pyrolysis-gasification method

A circulating fluidized bed and fluidized bed gasifier technology, applied in the field of coal gasification, can solve the problems of low utilization rate of pulverized coal, difficult utilization of low-rank coal, low carbon conversion rate and low gasification intensity, and achieve cost saving , reduce energy consumption, and expand the scope of adaptation

Pending Publication Date: 2021-04-09
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new circulating fluidized bed pulverized coal pyrolysis-gasification method for the problems of low carbon conversion rate and gasification intensity, low pulverized coal utilization rate, and low-rank coal in the prior art. Gasification device, and method of using it for pulverized coal pyrolysis-gasification

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
  • Circulating fluidized bed pulverized coal pyrolysis-gasification device and pulverized coal pyrolysis-gasification method
  • Circulating fluidized bed pulverized coal pyrolysis-gasification device and pulverized coal pyrolysis-gasification method
  • Circulating fluidized bed pulverized coal pyrolysis-gasification device and pulverized coal pyrolysis-gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The reaction process is as follows: the pulverized coal raw material is sent from the feeder (1) to the dense-phase area (3), mixed with high-temperature gasified semi-coke and heated, and a pyrolysis reaction occurs, and the pyrolysis gas entrained with fine coal powder is separated by gas-solid separation The recovered fine coal powder returns to the dense-phase area (3), and the pyrolysis semi-coke enters the lower part of the fluidized bed gasifier (8) after the circulation amount is controlled by the pyrolysis semi-coke return valve (6). Pyrolysis semi-coke is contacted with gasification agent D, and gasification reaction occurs in fluidized bed gasifier (8) and fast bed gasifier (13) to generate synthesis gas, which passes through cyclone separator (14) of fast bed gasifier After separating the gasified semi-coke that has not been gasified, it enters the upper settling section (11) of the fine powder sedimentation / stripping device (9), and the gasified semi-coke th...

Embodiment 2

[0073] The reaction process is the same as in Example 1. In the reaction process, the pulverized coal raw material is lignite, the pyrolysis pressure of the fluidized bed pyrolysis furnace (2) is 6.5MPa, and the pyrolysis temperature is 400°C. Coal average density 200kg / m 3 , fluidized bed pyrolysis furnace (2) reactor dense phase zone (3) inner superficial linear velocity 1.0m / s; fluidized bed gasification furnace (8) gasification pressure 0MPa, gasification temperature 700 ℃, powder Coal average density 200kg / m 3 , the average superficial velocity in the fluidized bed gasifier (8) is 1.2m / s; the gasification pressure of the fast bed gasifier (13) is 0MPa, the gasification temperature is 700°C, and the average density of pulverized coal is 50kg / m 3 ; The average superficial linear velocity in the fast bed gasifier (13) is 3.0m / s, the combustion pressure of the fluidized bed combustion chamber (7) is 0MPa, the combustion temperature is 800°C, and the average density of pulve...

Embodiment 3

[0075] The reaction process is the same as in Example 1. In the reaction process, the pulverized coal raw material is lignite, the pyrolysis pressure of the fluidized bed pyrolysis furnace (2) is 0, and the pyrolysis temperature is 800°C. The pulverized coal in the dense phase zone of the fluidized bed pyrolysis furnace (2) reactor (3) Average density 200kg / m 3 , fluidized bed pyrolysis furnace (2) reactor dense phase zone (3) inner superficial linear velocity 1.0m / s; fluidized bed gasification furnace (8) gasification pressure 0, gasification temperature 1200 ℃, powder Coal average density 200kg / m 3 , the average superficial velocity in the fluidized bed gasifier (8) is 1.2m / s; the gasification pressure of the fast bed gasifier (13) is 0, the gasification temperature is 1200°C, and the average density of pulverized coal is 50kg / m 3 ; The average superficial velocity in the fast bed gasifier (13) is 3.0m / s, the combustion pressure of the fluidized bed combustion chamber (7) ...

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

PropertyMeasurementUnit
Average densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a circulating fluidized bed pulverized coal pyrolysis-gasification device, which comprises: a feeder; a fluidized bed pyrolysis furnace, which is connected with the feeder through a feeding inclined pipe; a fluidized bed gasification furnace, which is connected with the fluidized bed pyrolysis furnace through a pyrolysis inclined pipe; a fast bed gasification furnace, a lower inlet of which is connected with an upper outlet of the fluidized bed gasification furnace; a fluidized bed combustion chamber, an upper inlet of which is connected with a lower outlet of the fluidized bed gasification furnace; and a fine powder settling / stripping device, which is arranged outside the fast bed gasification furnace and is connected with the fluidized bed pyrolysis furnace through a gasification inclined pipe. The invention also discloses a method for pyrolyzing and gasifying pulverized coal by adopting the device. The device provided by the invention has the characteristics of high carbon conversion rate, high gasification strength, high pulverized coal utilization rate, wide adaptability of gasified coal types, reasonable energy utilization and stable and efficient operation of the device.

Description

technical field [0001] The invention belongs to the field of coal gasification, and relates to a circulating fluidized bed pulverized coal pyrolysis-gasification device and a method for using the pulverized coal pyrolysis-gasification device. Background technique [0002] Coal, oil, and natural gas are the world's three major primary energy sources, of which coal accounts for about 79% of the world's energy reserves. Coal is one of the main fuel resources for generating power, heat, coal coke processing, and by-product asphalt. my country is a country with coal as the main energy structure, which will not change for a long time in the future. According to statistics, in 2015, coal accounted for 63.7% of my country's primary energy consumption structure. With the increasing shortage of petroleum resources, the effective use of coal resources has become a strategy for the sustainable development of energy in our country. my country's low-rank coal reserves account for more th...

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): C10J3/64C10J3/72C10J3/84
CPCC10J3/64C10J3/72C10J3/721C10J3/723C10J3/725C10J3/84C10J2300/093C10J2300/0916C10J2300/0986C10J2300/0976C10J2300/0969C10J2300/1223
Inventor 钟思青徐俊霍威金渭龙
Owner CHINA PETROLEUM & CHEM CORP
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