Solid fuel burner and solid fuel boiler

A solid fuel and burner technology, which is applied in the direction of burners burning powder fuel, burning liquid fuel and powder fuel, burning block fuel and liquid fuel, etc. It can solve the problem of delayed reduction and achieve rapid burning effect

Active Publication Date: 2013-09-11
MITSUBISHI POWER LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, NOx generated in the high-temperature oxygen residual region around the flame passes through the outer periphery of the flame, so the reduction is delayed compared with the inside of the flame, which becomes the main cause of NOx generation from coal-fired boilers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid fuel burner and solid fuel boiler
  • Solid fuel burner and solid fuel boiler
  • Solid fuel burner and solid fuel boiler

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0096] Figure 1A , Figure 1B The shown solid fuel incineration burner 20 has a finely powdered charcoal burner (fuel burner) 21 for injecting finely pulverized charcoal and air, and secondary air inlets 30 arranged above and below the finely pulverized charcoal burner 21 .

[0097] The secondary air inlet 30 is to be able to adjust the air flow rate of each port, such as figure 2 As shown, each secondary air supply line branched from the air supply duct 17 has a damper 40 capable of adjusting the opening as an air flow rate adjustment mechanism.

[0098] The above-mentioned pulverized coal burner 21 has a rectangular coal primary port 22 into which the pulverized coal is fed by the primary air, and a coal secondary port that surrounds the periphery of the coal primary port 22 and injects a part of the secondary air. twenty three. Also, about coal 2 secondary port 23, also as figure 2 As shown, there is a shock absorber 40 capable of adjusting the opening degree as the a...

no. 2 approach

[0134] Next, based on Figure 10A ~ Figure 10C A solid fuel incineration burner according to a second embodiment of the present invention will be described. In addition, the same code|symbol is attached|subjected to the same part as the above-mentioned embodiment, and the detailed description is abbreviate|omitted.

[0135] In the illustrated solid fuel incineration burner 20A, the pulverized coal burner 21 has a rectangular coal primary port 22 into which the pulverized coal transported by the primary air is placed, and is arranged so as to surround the primary coal port 22. The coal secondary port 23 which puts in a part of secondary air.

[0136] Secondary air injection ports 30A for secondary air injection are provided above and below the solid fuel combustion burner 21 . The secondary air inlet port 30A is divided into a plurality of independent flow paths and ports, and a shock absorber 40 capable of adjusting the opening degree of the flow rate adjustment mechanism of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A solid fuel burner that suppresses a high-temperature oxygen remaining region formed at the outer circumference of a flame and that can decrease the amount of NOx eventually produced is provided. The solid fuel burner (20) that is used in a burner section of a solid fuel boiler for performing low-NOx combustion separately in the burner section and in an additional-air injection section and that injects powdered solid fuel and air into a furnace includes a fuel burner (21) having internal flame stabilization and a secondary-air injection port (30) that does not perform flame stabilization.

Description

technical field [0001] The present invention relates to, for example, a solid fuel incineration burner and a solid fuel incineration boiler for incinerating solid fuel (powder fuel) such as pulverized charcoal. Background technique [0002] Conventionally, boilers that incinerate solid fuels include, for example, pulverized coal incineration boilers that incinerate pulverized charcoal (coal) as solid fuel. As such a finely powdered charcoal incineration boiler, two types of combustion systems, a rotary combustion boiler and an opposed combustion boiler, are known. [0003] Among them, in the rotary combustion boiler that incinerates fine powder coal, the secondary air inlet for secondary air input is provided above and below the primary air input from the coal incineration burner (solid fuel incineration burner) together with the fuel fine powder charcoal. , to adjust the flow rate of the secondary air around the coal incineration burner (for example, refer to Patent Docume...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): F23D1/00F23C5/32F23L9/00
CPCF23C6/045F23C2201/101F23C2201/20F23D1/00F23C6/04F23C99/00
Inventor松本启吾藤村皓太郎堂本和宏一濑利光阿部直文葛西润
OwnerMITSUBISHI POWER LTD