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

A post treatment process containing a fast gas-solid separation structure after plasma coal cracking

A technology of plasma and coal cracking, which is applied in the post-processing field of plasma coal cracking process, can solve the problems of reducing cooling efficiency and consuming cooling water, and achieve the effect of improving cooling efficiency, improving comprehensive value, and increasing product added value

Active Publication Date: 2012-11-14
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the pyrolysis product contains a large amount of solids, the cooling efficiency is reduced and a large amount of cooling water is consumed

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 post treatment process containing a fast gas-solid separation structure after plasma coal cracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The plasma torch uses hydrogen as the working gas, the input power is 3.8-4.2MW, the hydrogen flow rate is 100-110kg / h, the average temperature of the hydrogen plasma exceeds 3000K, and the temperature in the central area is 5000-6000K. The pyrolysis product temperature is 1200~1500K, the speed is 150~200m / s, and the pyrolysis product enters the rapid separation device (the gas-solid separation device disclosed in the prior art patent CN1267564), the gas residence time is 80ms, and the solid phase residence time is the separation efficiency 75%. The gas separated from the gas outlet, that is, the gas phase intermediate product, enters the quenching device, is rapidly cooled with circulating water, and is lowered to room temperature (thereby terminating the thermal decomposition of the product, increasing the content of acetylene in the cracked gas, and avoiding the decomposition reaction of acetylene at high temperature), to obtain the volume content 10% acetylene gas m...

Embodiment 2

[0026] The plasma torch uses hydrogen as the working gas, the input power is 3.8-4.2MW, the hydrogen flow rate is 100-110kg / h, the average temperature of the hydrogen plasma exceeds 3000K, and the temperature in the central area is 5000-6000K. The pyrolysis product temperature is 1200~1500K, the speed is 150~200m / s, and the pyrolysis product enters the rapid separation device (the gas-solid separation device disclosed in the prior art patent CN1267564), the gas residence time is 80ms, and the solid phase residence time is the separation efficiency 75%. The gas separated from the gas outlet, that is, the gas phase intermediate product, enters the quenching device, is rapidly cooled with circulating water, and is lowered to room temperature (thereby terminating the thermal decomposition of the product, increasing the content of acetylene in the cracked gas, and avoiding the decomposition reaction of acetylene at high temperature), to obtain the volume content 10% acetylene gas m...

Embodiment 3

[0028] The plasma torch uses hydrogen as the working gas, the input power is 3.8-4.2MW, the hydrogen flow rate is 100-110kg / h, the average temperature of the hydrogen plasma exceeds 3000K, and the temperature in the central area is 5000-6000K. The pyrolysis product temperature is 1200~1500K, the speed is 150~200m / s, and the pyrolysis product enters the rapid separation device (the gas-solid separation device disclosed in the prior art patent CN1267564), the gas residence time is 80ms, and the solid phase residence time is the separation efficiency 75%. The gas separated from the gas outlet, that is, the gas phase intermediate product, enters the quenching device, is rapidly cooled with propane, and is lowered to room temperature (thereby terminating the thermal decomposition of the product, increasing the content of acetylene in the cracked gas, and avoiding the decomposition reaction of acetylene at high temperature), and obtaining the volume content of acetylene 6% and 9% et...

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 post treatment process containing a fast gas-solid separation structure after plasma coal cracking, which pertains to the technical field of coal chemical industry. This process includes: a) through a fast gas-solid separation device, gas-phase intermediate and solid-phase intermediate are obtained from the reaction products of plasma coal cracking; b) the gas-phase intermediate enters a quenching unit to obtain acetylene-containing cracking gas; c) the solid-phase intermediate enters another reactor to further react with water or hydrogen; d) the heat obtained from the reaction of the solid-phase intermediate provides partial electricity for plasma generator. The present invention may raise the acetylene content of cracking gas product, the overall coal conversion rate and the comprehensive value of the process and is applicable to the post treatment of high-temperature, high-flowrate gas-solid mixture.

Description

technical field [0001] The invention relates to a plasma coal cracking process post-treatment process containing a gas-solid fast separation structure, and belongs to the technical field of coal chemical industry. Background technique [0002] Acetylene is an important basic organic chemical raw material. The industrial methods for producing acetylene mainly include calcium carbide method, methane partial oxidation method and methane arc cracking method. Among them, the calcium carbide method acetylene process is mature and accounts for an absolute proportion in industrial production, but the pollution and energy consumption are relatively high. [0003] Plasma pyrolysis of coal to acetylene is a new and promising route for direct chemical conversion of coal. The related research began in the 1960s at the University of Sheffield in the UK: in the arc thermal plasma jet with high temperature, high enthalpy and high reactivity, Coal volatiles and even fixed carbon can be dire...

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): C07C11/24B01D45/06
CPCY02P20/10
Inventor 程易章莉吴昌宁颜彬航双玥金涌
Owner TSINGHUA UNIV
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