Oil secondary air assisted ignition self-stabilization combustion W flame boiler and self-stabilization combustion method

A secondary air and boiler technology, which is applied in combustion methods, combustion equipment, and non-flammable liquid/gas transportation, etc., can solve the problems of insufficient pressure load capacity and poor combustion stabilization effect of flame boilers, and achieve large-scale lifting and lowering. load, favoring ignition, optimizing the effect of the burner structure

Active Publication Date: 2020-11-17
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 pressure 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 oil secondary air is provided to assist the 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-stabilization combustion W flame boiler and self-stabilization combustion method
  • Oil secondary air assisted ignition self-stabilization combustion W flame boiler and self-stabilization combustion method
  • Oil secondary air assisted ignition self-stabilization combustion W flame boiler and self-stabilization 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

The invention relates to a W flame boiler and a self-stabilization combustion method, in particular to an oil secondary air assisted ignition self-stabilization combustion W flame boiler and a self-stabilization combustion method, and aims to solve the problems that when the pressure load capacity of a W flame boiler is insufficient, the minimum load of the boiler can only be maintained at about 50% of the full load, and the stable combustion effect is poor during low-load operation. An upper hearth, a lower hearth, a front wall and a rear wall form a furnace body, a plurality of cyclone combustors are linearly arranged and installed on a front furnace arch and a rear furnace arch of the upper hearth correspondingly, and a plurality of adjustable oil secondary air nozzles are linearly arranged and movably connected to a front furnace arch and a rear furnace arch of the upper hearth; and each adjustable oil secondary air nozzle is correspondingly arranged close to one cyclone combustor,each adjusting pull rod is installed on one adjustable oil secondary air nozzle, and an ignition oil gun and an exhaust gas nozzle are installed in each adjustable oil secondary air 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 Applications(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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