Fluidized bed boiler hot material firing mode

A fluidized bed boiler and hot material technology, applied in fluidized bed combustion equipment, combustion ignition, incandescent ignition, etc., can solve the problems of cumbersome operation process, complex facilities, high cost, and achieve strong controllability, cost reduction, The effect of wide applicability

Inactive Publication Date: 2005-06-29
王天伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A common feature of these ignition methods is that the independent ignition of a single boiler itself is too expensive, the facilities are complicated, the operation process is cumbersome, and the cost is very high.

Method used

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  • Fluidized bed boiler hot material firing mode
  • Fluidized bed boiler hot material firing mode
  • Fluidized bed boiler hot material firing mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Hot material ignition method and steps of the present invention:

[0021] 1. Take the cold slag discharged from the operating boiler as the bottom material for starting the boiler. The particle size of the cold slag is 2-8mm, and its particle size ratio is: 2-3mm accounts for 25%; 3-6mm accounts for 50%; 6-8mm accounts for 25% ;The bottom material thickness is 330mm;

[0022] 2. Before taking hot material, stop the slagging of the running boiler. When the wind pressure in the air chamber rises to 108% of normal and the temperature in the dense phase zone remains at 900°C, take the hot material;

[0023] 3. Align the feeding cart with the feeding port, open the furnace door, and automatically fill the hot material into the feeding cart under the action of fluidization movement. Fill in, determine and repeat several times according to the size of the material truck volume, and take a total of 1 ton of hot material. The hot material placed in the furnace of the pre-start...

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Abstract

The invention relates to a boiler ignition mode, in particular to a coal-fired fluidized bed boiler heating material ignition mode. The fluidized bed heating material ignition mode of the present invention is realized through the following technical scheme. The hot material ignition of the present invention is to take out the inert hot bed material that is nearly burned out in the running boiler, put it into the pre-start fluidized bed boiler, and use it as an ignition source to make it fluidized after air distribution and coal supply. State combustion, the combustion proceeds from point to surface until the whole bed is stably combusted. The process of the heating material ignition method of the circulating fluidized boiler of the present invention is as follows: laying the bottom material → taking and sending the heating material → air distribution, coal feeding → fluidized combustion → air distribution, coal feeding → extended combustion → stable combustion of the whole bed. The advantages of the invention are: the ignition cost of the invention is greatly reduced; the ignition and combustion process is from point to surface, and the ignition is easy and stable; the operation is simple, convenient and intuitive; the controllability is strong; the safety and reliability are high, and the ignition success rate is high; Transformation promotion. The invention is applicable to various coal-fired fluidized bed boilers.

Description

technical field [0001] The invention relates to a boiler ignition mode, in particular to a coal-fired fluidized bed boiler heating material ignition mode. Background technique [0002] There are many ignition methods for coal-fired fluidized bed boilers, such as microfluidization ignition with charcoal on the bed, oil gun and air gun ignition on the bed and under the bed, and pre-combustion hot flue gas ignition under the bed. A common feature of these ignition methods is the independent ignition of a single boiler itself, which is too expensive, complicated facilities, cumbersome operation process, and high cost. Contents of the invention [0003] The problem to be solved by the present invention is to overcome the disadvantages of the existing ignition methods, and provide a coal-fired fluidized bed boiler hot material ignition method with low ignition cost and simple facilities and operations. [0004] The fluidized bed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18F23Q7/02
Inventor 王天伟
Owner 王天伟
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