Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal

A technology of pulverized coal combustion and double cyclone, which is applied in the combustion method, combustion equipment, transportation of non-flammable liquid/gas, etc., can solve the problems of difficulty in adding air, poor combustion stability under high load, stable combustion, and poor burnout performance.

Inactive Publication Date: 2012-01-18
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The F air nozzle (10) of the conventional double cyclone burner W-type flame boiler is horizontal. This kind of boiler has problems such as difficulty in adding air when the load is high, poor combustion stability, and poor burn

Method used

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  • Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal
  • Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal
  • Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal

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Experimental program
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Effect test

Embodiment

[0011] Embodiment: The structure of the double cyclone burner—W type flame boiler is as follows figure 1 and image 3 As shown, it is composed of lower furnace 1, upper furnace 2, front and rear arches 3 and front and rear wall water cooling walls 4. There are relatively symmetrical secondary air nozzles D8, E9 and F10 in the lower part of the front and rear wall water cooling walls 4, and the front and rear arches 3 has primary air nozzle 6, exhaust gas nozzle 7, secondary air C nozzle 5, secondary air B6-1 and secondary air A7-1; exhaust gas nozzle 7 is opened on the front and rear arches 3 near the center of the furnace The secondary air C nozzle is opened on the front and rear arches 3 near the front and rear walls, the primary air nozzle 6 is opened between the exhaust air nozzle 7 and the secondary air C nozzle 5 on the front and rear arch 3, the primary air nozzle 6 and the exhaust air nozzle 7 It is at an angle of 5° with the vertical. The air outlet of the secondar...

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PUM

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Abstract

The invention discloses a double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal. The boiler consists of a lower hearth (1), an upper hearth (2), a front-rear arch (3) and a front-rear wall water cooling wall (4); the lower part of the front-rear wall water cooling wall (4) is provided with a secondary air nozzle; the front-rear arch (3) is provided with a primary air nozzle (6), a gas exhaust nozzle (7) and a secondary air C nozzle (5); and the air outlet of the secondary air C nozzle (5) and the vertical direction form an included angle of 1-10 degrees. According to the invention, the secondary air C nozzle and the vertical direction form a fixed included angle and form a group of closely parallel air stream with the primary air, thus the interferences of the secondary air at the C nozzle to the main pulverized coal air stream of the primary air can be reduced, the burning stability is improved, also the secondary air entering from the secondary air C nozzle also can supply air in the course of burning of the main pulverized coal air stream under the tilting angle, and better burning rate is achieved.

Description

technical field [0001] The invention relates to a W-shaped flame furnace, in particular to a W-shaped flame boiler with double cyclone tube burners for stable pulverized coal combustion. Background technique [0002] W-type flame boilers are mainly used for burning low-volatile coal types. The existing double-cyclone burners—W-type flame boilers (such as figure 2 shown) usually has the following characteristics: the pulverized coal airflow primary air nozzle 6 and the exhaust gas nozzle 7 are arranged on the arch, the secondary air B6-1, A7-1, C nozzle 5 are arranged on the arch, the secondary air D8, E9 , F10 is arranged on the front and rear walls under the arch. The F air nozzle (10) of the conventional double cyclone burner W-type flame boiler is horizontal. This kind of boiler has problems such as difficulty in adding air when the load is high, poor combustion stability, and poor burnout performance. After the angle is tilted down, the combustion economy is greatly im...

Claims

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Application Information

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IPC IPC(8): F23C7/00F23L9/00
Inventor 石践陈玉忠侯玉波
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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