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Oil secondary air assisted ignition self-stabilized combustion w flame boiler and self-stabilized combustion method

A secondary air and boiler technology, applied in combustion methods, combustion equipment, non-flammable liquid/gas transportation, etc., can solve problems such as poor combustion stability

Active Publication Date: 2021-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the W flame boiler has insufficient low load capacity, the minimum load of the boiler can only be maintained at about 50% of the full load, and the stable combustion effect is not good during low load operation, the invention further provides oil secondary air to assist ignition and self-stabilized combustion W Flame Boiler and Self-stabilizing Combustion Method

Method used

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  • Oil secondary air assisted ignition self-stabilized combustion w flame boiler and self-stabilized combustion method
  • Oil secondary air assisted ignition self-stabilized combustion w flame boiler and self-stabilized combustion method
  • Oil secondary air assisted ignition self-stabilized combustion w flame boiler and self-stabilized combustion method

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specific Embodiment approach 1

[0031] Specific implementation mode one: combine Figure 1-Figure 4 Describe this embodiment, the oil secondary air assists ignition self-stable combustion W flame boiler in this embodiment, it includes upper furnace 1, lower furnace 10, front wall, rear wall, multiple cyclone burners 2, multiple ignition Oil gun 6 and multiple adjustable oil secondary air nozzles 7, cyclone burner 2 includes multiple exhaust gas nozzles 8 and multiple adjustment rods 9;

[0032] The upper furnace 1, the lower furnace 10, the front wall and the rear wall constitute the furnace body, and multiple cyclone burners 2 are arranged in a straight line and installed on the front furnace arch and the rear furnace arch of the upper furnace 1 respectively. The air nozzles 7 are arranged in a straight line and are movable connected and installed on the front furnace arch and the rear furnace arch of the upper furnace 1. Each oil-adjustable secondary air nozzle 7 is arranged correspondingly close to a cycl...

specific Embodiment approach 2

[0033] Specific implementation mode two: combination Figure 1-Figure 4 Describe this embodiment, the oil secondary air assisted ignition self-stable combustion W flame boiler in this embodiment, it also includes a plurality of support rods 3 and a plurality of sleeves 4, each sleeve 4 is sleeved on a support rod 3 , the outer wall of each cyclone burner 2 is fixedly connected to both ends of the support rod 3, and the sleeve 4 on the support rod 3 is fixedly connected to the outer wall of the top of the cyclone burner 2 corresponding to the adjustable oil secondary air nozzle 7 The outlet of the cyclone burner 2 is connected with the upper furnace 1 through the thick coal powder nozzle 5, the central axis of the oil-adjustable secondary air nozzle 7 rotates around the center line of the casing 4, and the outer wall of the cyclone burner 2 is in contact with the upper furnace 1. Both ends of the support rod 3 are rigidly connected, and the cross-sectional area of ​​the exhaust...

specific Embodiment approach 3

[0034] Specific implementation mode three: combination Figure 1-Figure 4 Describe this embodiment, the oil secondary air assists ignition self-stable combustion W flame boiler in this embodiment, it also includes multiple groups of secondary air nozzles 11, and multiple groups of secondary air nozzles 11 are evenly distributed on the front wall. Groups of secondary air spouts 11 are evenly distributed on the back wall, and other methods are the same as in Embodiment 1 or 2.

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Abstract

Oil secondary air assists ignition self-stable combustion W flame boiler and self-stable combustion method. The present invention relates to a W flame boiler and a self-stable combustion method. In order to solve the insufficient pressure load capacity of the W flame boiler, the minimum load of the boiler can only be maintained at About 50% of the full load, the problem of poor combustion stability during low-load operation, the upper furnace, the lower furnace, the front wall and the rear wall constitute the furnace body, and multiple cyclone burners are arranged in a straight line and installed in front of the upper furnace. On the furnace arch and the rear furnace arch, multiple adjustable oil secondary air nozzles are arranged in a straight line and are movably connected and installed on the front furnace arch and rear furnace arch of the upper furnace. Each adjustable oil secondary air nozzle is burned close to a cyclone According to the corresponding setting of the device, each adjusting rod is installed on an adjustable oil secondary air nozzle, and each adjustable oil secondary air nozzle is equipped with an ignition oil gun and a exhaust gas nozzle. The invention belongs to the field of boiler combustion.

Description

technical field [0001] The invention relates to a W flame boiler and a self-stable combustion method, in particular to a self-stable combustion W flame boiler and a self-stable combustion method assisted by oil secondary air. Background technique [0002] W Flame Boiler is a power plant boiler specially designed for burning lean coal and anthracite and other low-volatile and difficult-to-combustible coals introduced by China from North Africa and Western Europe since the 1990s. Due to the tight and stable lithofacies structure, small porosity and low reactivity of anthracite and lean coal, in actual combustion, there are often problems of difficulty in ignition, stable combustion and burnout, which require higher ignition temperature and The burnout temperature and pulverized coal burnout time are longer. When the boiler is running at low load, the primary air and secondary air will decrease, and the temperature of the hot air will drop due to the small amount of fuel sent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C7/00F23L9/00F23L13/00
CPCF23C7/002F23L9/00F23L13/00
Inventor 李争起杜贺郑智魏曾令艳陈智超朱群益
Owner HARBIN INST OF TECH
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