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Method for heating a fuel bed in a fixed bed pressure gasification reactor

A gasification reactor and fixed bed technology, applied in the field of fixed bed pressure gasification reactors, can solve the problems of labor time consumption, high thermal wear, uneven heating of fuel beds, etc.

Active Publication Date: 2018-04-10
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result would be higher thermal wear and / or a more expensive construction of the rotary grate
[0008] The method of generating heat by combustion of an ignition fuel such as wood in a reactor also requires a lot of technical effort and besides that a lot of man-hours are consumed
These methods also involve the risk that the fuel bed is heated only unevenly across the cross-section to the ignition point, and therefore the oxygen introduced into the fixed bed by steam is only incompletely converted in the initial stages of gas production

Method used

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  • Method for heating a fuel bed in a fixed bed pressure gasification reactor
  • Method for heating a fuel bed in a fixed bed pressure gasification reactor

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Embodiment Construction

[0063] By example, figure 1 It is shown how the flue gas inlets are distributed at the same height around the periphery of the fixed bed pressure gasification reactor 1 . Fuel, in this example lump coal, is supplied to the fixed bed pressure gasification reactor 1 through a fuel addition device 3 . Ash obtained as a gasification by-product is discharged from the fixed-bed pressure gasification reactor through the ash discharge device 6 . Gasification medium, in this example, steam and air or oxygen are introduced into the fixed bed pressure gasification reactor through the gasification medium inlet 5 below the ash discharge grate 2 after the heating method is completed, in this example, the exhaust Ash grate 2 is designed as a rotary grate. The raw synthesis gas thus produced is withdrawn from the fixed bed pressure gasification reactor through the product gas outlet 6 and supplied for further processing.

[0064] During the heating method according to the invention, the fl...

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Abstract

A method for heating the fuel bed during start-up of a fixed-bed pressure gasification reactor, wherein the thermal energy necessary for heating the fuel bed is introduced into the fuel bed by flue gas generated outside the reactor as heat carrier.

Description

technical field [0001] The present invention relates to a method for heating carbonaceous fuels at the start-up of a fixed-bed pressure gasification reactor for converting carbonaceous fuels with sufficient Carbonaceous fuels with high carbon content such as coal, coke or lump biomass are used to produce syngas. [0002] The invention also includes a fixed bed pressure gasification reactor suitable for carrying out the method according to the invention. Background technique [0003] With the help of a fixed bed pressure gasification reactor, solid carbonaceous fuels such as coal, coke or other bulk biomass are gasified under overpressure in a shaft reactor by steam (hereinafter simply referred to as steam) and oxygen or air to A synthesis gas mainly composed of carbon monoxide and hydrogen is obtained, wherein solid ash is obtained which is discharged from the reactor via the ash discharge grate, which in many cases is formed as a rotary grate, see "Ullmann Industrial "Enc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/02C10J3/20
Inventor 奥斯曼·特纳
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE