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A startup and shutdown process of biomass gasifier coupled with coal-fired units

A technology for coal-fired units and gasifiers, which is applied in the gasification process, the manufacture of combustible gas, and the petroleum industry. The effect of safe shutdown

Active Publication Date: 2020-04-03
合肥德博电力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some biomass raw materials are used to make paper, feed, and rural life energy (used as fuel), some are used to return to the field to make fertilizer, and most of them are discarded or burned, causing serious water pollution and air pollution; It also caused a series of problems such as soil compaction and frequent occurrence of diseases and insect pests.

Method used

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  • A startup and shutdown process of biomass gasifier coupled with coal-fired units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Taking rice husk raw material as an example, a start-up and shutdown process of a biomass gasifier coupled with a coal-fired unit includes the following steps:

[0060] (1) Furnace start-up process

[0061] A. Ignition start

[0062] A1. Put the gas into the pipeline of the boiler system, start the air induction device and the blower device, adjust the pressure of the feeding port to keep it at about -200-0Pa, and keep the pressure constant during the furnace start-up process;

[0063] A2. Start the return device, adjust the flow rate of the fluidized medium and the return medium until the bed material in the return device flows stably;

[0064] A3. Start the ignition burner, observe the combustion situation of the ignition burner, monitor the change of oxygen amount, and keep the combustion completely stable;

[0065] A4. Keep the burner burning stably, adjust the amount of oil and air in the burner, monitor the temperature rise in the dense phase area, and control t...

Embodiment 2

[0095] Taking wheat straw molding fuel raw materials as an example, a start-up and shutdown process of a biomass gasifier coupled with a coal-fired unit includes the following steps:

[0096] (1) Furnace start-up process

[0097] A. Ignition start

[0098] A1. Put the gas into the pipeline of the boiler system, start the air induction device and the blower device, adjust the pressure of the feeding port to keep it at about -100 to 50Pa, and keep the pressure constant during the process of starting the furnace;

[0099] A2. Start the return device, adjust the air flow rate of the fluidized medium and the return medium to the stable flow of the bed material in the return device;

[0100] A3. Start the ignition burner, observe the combustion situation of the ignition burner, monitor the change of oxygen amount, and keep the combustion completely stable;

[0101] A4. Keep the burner burning stably, adjust the amount of oil and air in the burner, monitor the temperature rise in t...

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Abstract

The invention discloses a starting and stopping technology of a biomass gasifier coupled with a coal-fired unit, wherein the process includes a furnace starting process and a furnace stopping workingcondition. The furnace starting process includes gasifier ignition starting, feeding, working condition adjusting and switching and other processes; the furnace stopping working condition includes three MFT working conditions. In the furnace starting process, flue gas / fuel gas is not switched to a burning torch to be emptied, but is discharged directly after passing through a boiler flue gas treatment device; gas not up to standard is not discharged in the furnace starting process, and clean and safe furnace starting is realized; during MFT1 furnace stopping of the furnace stopping working condition, flue gas / fuel gas is discharged after passing through the boiler flue gas treatment device, gas not up to standard is not discharged in the furnace stopping process, and clean and safe furnacestopping is realized; during MFT2 and MFT3 furnace stopping, the fuel gas is emptied after being burned via the burning torch, and clean and safe furnace stopping is realized.

Description

technical field [0001] The invention belongs to the technical field of biomass gasification coupling, and in particular relates to a starting and stopping process of a biomass gasification furnace coupled with a coal-fired unit. Background technique [0002] my country is a large agricultural country, and produces about 800 million tons of various agricultural and forestry wastes and other biomass raw materials every year. At present, some biomass raw materials are used to make paper, feed, and rural life energy (used as fuel), some are used to return to the field to make fertilizer, and most of them are discarded or burned, causing serious water pollution and air pollution; It also caused a series of problems such as soil compaction and frequent occurrence of diseases and insect pests. [0003] In recent years, the power generation technology of biomass gasification coupled with coal-fired units has attracted more and more attention from the country and the biomass utiliza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/72
CPCC10J3/726C10J3/728C10J2300/1606
Inventor 张守军王勤辉周建斌刘蔚张廷军鲁万宝赵成武冯干李益瑞吴银龙张守峰胡鹏程东海
Owner 合肥德博电力有限公司
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