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Coal gasification

A synthesis gas and raw material technology, applied in gasification process, fixed bed gasification, granular/powdered fuel gasification, etc., can solve the problems of plasma torch size power output and working life limitation

Inactive Publication Date: 2018-12-21
MINTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of a plasma torch is limited by its power output and operating life

Method used

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  • Coal gasification

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Embodiment Construction

[0019] In practicing the invention, a structure similar to a multi-electrode DC open arc furnace is used. Larger gasification capacities can be achieved with this concept. As noted, plasma-based gasification does not require oxygen and does not require a gas separation unit. Elimination of these features is expected to reduce the capital cost of the equipment.

[0020] In the gasification process, the process temperature is the main parameter affecting the kinetics and carbon conversion. The process temperature depends on the nature of the gasification structure and design factors aimed at achieving maximum and efficient energy transfer by the plasma arc by radiative and convective means.

[0021] The drawing shows a DC arc gasifier 10 according to the present invention comprising a lower vessel 12 and an upper vessel 14 operating as an entrainment streamer 16 .

[0022] The lower vessel 12 includes a slag containment structure 20 having a lid 22 . A plurality of electrode...

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Abstract

A method of producing syngas wherein a carbonaceous feedstock is exposed to a plasma arc generated by a DC supply in a dry-steam environment.

Description

Background technique [0001] The present invention relates to the gasification of coal. [0002] Gasification is a process performed by contacting carbonaceous fuel materials with steam under suitable conditions of temperature and pressure to form synthesis gas, which is a mixture of carbon monoxide, hydrogen, and carbon dioxide. Various types of gasification methods have been proposed including at least countercurrent fixed bed gasification method, cocurrent fixed bed gasification method, fluidized bed gasification method, entrained flow gasification method, in situ underground gasification method and plasma gasification method . These methods depend at least on the manner in which the steam and carbonaceous materials are fed to the gasifier and the nature of the load in the gasifier. [0003] In a plasma gasifier composed of a plurality of plasma torches, a high-voltage current is supplied to each plasma torch, thereby generating a high-temperature plasma gas flow. Plasma ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/72C10J3/48C10J3/50C10J3/08
CPCC10J3/08C10J3/18C10J3/466C10J3/485C10J3/506C10J3/721C10J2300/093C10J2300/0933C10J2300/0976C10J2300/1238C10J2300/1253
Inventor K.比萨卡G.雷诺兹T.R.库尔
Owner MINTEK