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

Coal pyrolysis and gasification coproduction method

A joint production and coal pyrolysis technology, applied in the field of coal gasification, can solve the problem of low carbon conversion rate, achieve the effect of improving carbon conversion rate, system optimization, and solving the problem of disposal

Active Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a joint production method of coal pyrolysis and gasification in order to overcome the defect of low carbon conversion rate in the existing coal pyrolysis-fluidized bed gasification polygeneration process

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
  • Coal pyrolysis and gasification coproduction method
  • Coal pyrolysis and gasification coproduction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0052] According to a preferred embodiment of the present invention, the process flow chart of the joint production method of coal pyrolysis and gasification is as follows figure 1 shown. Specifically, the joint production method of coal pyrolysis and gasification includes:

[0053] (1) Grinding the raw coal 11 to below 6 mm, and separating it into coarse coal powder 12 and fine coal powder 13;

[0054] (2) Coarse pulverized coal 12 is injected into the fluidized bed pyrolysis furnace 1 for pyrolysis, and superheated steam 14 and optionally product gas 22 from the subsequent fluidized bed gasification furnace 2 are heated from the fluidized bed The bottom of the pyrolysis furnace 1 is injected as a part of the heat source and fluidization gas, and at the same time, the high-temperature semi-coke 15 from the subsequent fluidized bed gasification furnace 2 is injected from the middle of the fluidized bed pyrolysis furnace 1 as another part of the heat source. The outlet gas te...

Embodiment 1

[0066] This example is used to illustrate the joint production method of coal pyrolysis and gasification provided by the present invention.

[0067] Such as figure 1As shown, the raw coal is ground by a coal mill and sieved to obtain coarse coal powder with a particle size of 0.15-3 mm and fine coal powder with a particle size of less than 0.15 mm. The coarse coal powder is injected into the fluidized bed pyrolysis furnace 1 at 30 kg / h for pyrolysis, the operating temperature is 550° C., and the operating pressure is 0.1 MPa. The heat required by the pyrolysis furnace mainly comes from the high-temperature semi-coke (950°C) of the fluidized bed gasifier 2, and part of the product gas (950°C) from the fluidized bed gasifier 2 is injected into the pyrolysis furnace 1 to make the heat The furnace 1 realizes fluidized operation. The outlet temperature of the pyrolysis furnace is 450°C, and the coal tar carried in it is separated from the pyrolysis gas after being washed with wat...

Embodiment 2

[0079] This example is used to illustrate the joint production method of coal pyrolysis and gasification provided by the present invention.

[0080] Such as figure 1 As shown, the raw coal is ground by a coal mill and sieved to obtain coarse coal powder with a particle size of 0.15-3 mm and fine coal powder with a particle size of less than 0.15 mm. The coarse coal powder is injected into the fluidized bed pyrolysis furnace 1 at 30 kg / h for pyrolysis, the operating temperature is 600° C., and the operating pressure is 1.2 MPa. The heat required by the pyrolysis furnace mainly comes from the high-temperature semi-coke (980°C) of the fluidized bed gasifier 2, and part of the product gas (980°C) from the fluidized bed gasifier 2 is injected into the pyrolysis furnace 1 to make the heat The furnace 1 realizes fluidized operation. The outlet temperature of the pyrolysis furnace is 500°C, and the coal tar carried in it is separated from the pyrolysis gas after being washed with wa...

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
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a coal pyrolysis and gasification coproduction method. The method comprises the following steps: 1, separating coarse coal dusts and fine coal dusts from raw coal; 2, pyrolyzing the coarse coal dusts in a fluidized bed mode to obtain coal tar and semicoke; 3, gasifying the semicoke generated after pyrolysis in a fluidized bed mode to obtain a gas flow and high temperature semicoke, separating a product gas and solid particles from the gas flow, and returning at least parts of the high temperature semicoke and / or at least parts of the product gas to the above pyrolysis process in order to be used as a heat source in the pyrolysis process; and 4, carrying out coal dust gasification on the fine coal dusts separated in step 1 and the solid particles separated in step 3. The coal pyrolysis and gasification coproduction method realizes combined supply of heat, gas, oil and a chemical substance, and also realizes a high carbon conversion rate.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a joint production method of coal pyrolysis and gasification. Background technique [0002] In 2013, domestic primary energy consumption reached a new high, reaching 3.76 billion tons of standard coal. However, my country's foreign dependence on crude oil has reached 58.1%, and the foreign dependence on natural gas has exceeded 30% for the first time and reached 31.6%. The energy security situation is becoming increasingly severe. The total amount of coal resources in my country is abundant, about 5.9 trillion tons, and the predicted resources are 3.88 trillion tons. Therefore, making good use of the huge coal reserves and turning them into resources and strategies, and vigorously developing modern coal chemical technology can effectively alleviate the upward pressure of primary energy's external dependence. [0003] The proportion of low-rank coal in my country's coa...

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): C10J3/60C10J3/54C10B53/04
Inventor 吴治国王蕴王鹏飞王航王卫平崔龙鹏任杰
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