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Method and apparatus for starting up gasifying reactors operated with combustible dust

A technology of gasification reactor and powdered fuel, which is applied in the direction of granular/powdered fuel gasification, gasification process, manufacture of combustible gas, etc., to achieve the effect of avoiding adverse effects

Active Publication Date: 2011-06-22
西门子能源全球两合公司
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  • Abstract
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Problems solved by technology

Due to the very different flow characteristics of many pulverized fuels, even this method is only limitedly suitable for load control of high-power gasification reactors
[0007] No device is known from the prior art that enables the start-up of a gasification reactor for pulverized fuels in such a way that no pressure surge occurs due to the gas quantities released suddenly during start-up

Method used

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  • Method and apparatus for starting up gasifying reactors operated with combustible dust
  • Method and apparatus for starting up gasifying reactors operated with combustible dust
  • Method and apparatus for starting up gasifying reactors operated with combustible dust

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Embodiment Construction

[0019] In order to illustrate the meanings of related terms and concepts, as they should be understood in the present invention, some following terms and concepts are defined below.

[0020] "Start-up" of the gasification reactor is understood to start operation by igniting the burner. If all burners of the gasification reactor are firing, the start-up is ended and the gasification reactor works in normal operation.

[0021] The concept of "fuel charge" refers to the mass flow or volume flow of fuel, which may be gaseous, liquid and / or solid fuel converted by the gasification reactor. The burner of the gasification reactor must operate at a "minimum output velocity" at the burner outlet when ignited, which is in the range of 3 to 5 m / s to avoid flame backlash (flashback).

[0022] In a gasification reactor, a "synthesis gas" comprising carbon monoxide and hydrogen is obtained from the fuel employed, and the resulting synthesis gas is further utilized in downstream processing ...

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Abstract

The invention relates to a method for starting up a gasifying reactor comprising a plurality of burners. In this case, each burner is charged via a dense-stream delivery line (51, 52, 53, 54) assigned to it with combustible dust from a metering vessel (1) and charged via a gas delivery line (62, 63) with combustible gas, wherein a fuel mixture of combustible dust and combustible gas is provided before a point in time at which a burner is ignited, wherein a first composition of combustible dust and combustible gas with which a first burner is charged for ignition is controlled in dependence on the amount of fuel fed to the second burner for ignition, said second burner being charged with a second composition of combustible dust and combustible gas for ignition, after the ignition of a second burner following the ignition of the first burner,; and so the starting up of each of the plurality of burners of the gasifying reactor takes place with a controlled supply of the fuel load. The invention also relates to a gasifying reactor (7) for carrying out the method according to the invention.

Description

technical field [0001] The invention relates to a method and a device for starting a gasification reactor operated with pulverized fuel. Background technique [0002] It is known that gasification reactors with a high specific power, in particular above 200 MW, are equipped with a plurality of burners for supplying gasification medium and fuel, whether with gaseous, solid or liquid fuel. Here, the load is changed mainly by switching on or off a single burner arranged on top of the gasification reactor and within a defined range by means of A variable pressure differential regulation takes place with a variable fuel supply. [0003] The output velocity of the pulverized fuel on the burner should not fall below a minimum of 3 to 5 m / s to avoid flame backlash (flashback). Therefore, during start-up of a high-power gasification reactor, considerable amounts of gas are released during ignition, which cannot be used up at once in the downstream processing stages and must therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/30C10J3/50
CPCC10J2200/152C10J2300/1223C10J3/723C10J3/50C10J3/30C10J2300/0933Y02E20/18C10J3/726
Inventor O·斯库尔兹A·奥尔特拉普M·格特克B·穆勒R·格伦瓦尔德W·拉贝G·朔尔茨
Owner 西门子能源全球两合公司
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