Combustion system of W-type flame furnace
A combustion system and flame furnace technology, applied in the direction of combustion equipment, lighting and heating equipment, etc., can solve the problems of affecting the secondary air supply, low combustion efficiency, adjusting the air supply angle, etc., to reduce the contact area, boiler Efficiency improvement and convenient adjustment
Active Publication Date: 2013-06-19
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology
However, in the actual application process, the actual use effect of this device for adjusting the secondary air direction under the W-shaped flame furnace arch is not so obvious. On the one hand, the secondary air is prone to turbulence and the actual downward angle is inclined to the deflector. The angles are inconsistent, so that the effect of adjusting the air supply angle cannot be truly realized, resulting in low combustion efficiency and difficult to control the angle stably
On the other hand, during use, the adjusting blades will generate thermal expansion. After the thermal expansion, the distance between the adjusting blades and the adjacent medial septum will be narrowed, causing jamming, which directly affects the feeding of the secondary air, and cannot be effectively adjusted, which is not conducive to Burn fully
Method used
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Embodiment 1
[0023] see Figure 1-5 , the combustion system of the W-shaped flame furnace of the present invention comprises a furnace body 26, a burner 1, an adjusting vane device, a first longitudinal diaphragm 13, a second longitudinal diaphragm 15, a partition longitudinal plate 17, a third longitudinal diaphragm 18, a rear-drawing water-cooled Wall pipe 10, side-drawing water-cooled wall pipe 20, vertical water-cooled wall pipe 11, pull rod 6, regulating arm 8, rotating arm 9, rotating shaft 19 and connecting rod 5. The furnace body 26 is provided with an upper furnace 28 , a lower furnace 12 , an upper secondary air chamber 27 and a lower secondary air chamber 4 .
[0024] The secondary air chamber arranged on the front and rear walls is divided into an upper secondary air chamber 27 and a lower secondary air chamber 4 through a partition 2, and the lower secondary air chamber 4 has an equalizing orifice plate 7 and a water-cooled wall pipe. The furnace arch is equipped with a burne...
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The invention relates to a combustion system of a W-type flame furnace. The combustion system comprises a furnace body, clapboards, a combustor, a water cooling wall tube and a blade regulating device; wide-gap air chambers are separated correspondingly beside each wide nozzle and each thin nozzle by a vertical clapboard; each wide-gap air chamber is provided with a separation vertical plate; andthe separation vertical plates are connected with a post tensioning cold wall pipe so that each wide-gap air chamber is separated into two independent air channels. The flame furnace provided by the invention has the advantages of reasonably desgined structure, energy conservation and environmentally friendliness, turbulent flow is avoided effectively, the angle regulation is more accurate and effective, and blockage situation can not happen.
Description
technical field [0001] The invention relates to a combustion system of a W-shaped flame furnace. Background technique [0002] W flame boilers have been widely used in power stations burning anthracite in my country. The principle is to increase the pulverized coal stroke, increase the residence time of pulverized coal in the furnace, and lay a certain number of guard combustion belts in the lower furnace to increase the temperature of the furnace to ensure the ignition and burnout of low-volatile coal. The double-cyclone separated burners of the boiler are arranged on the arch, and the primary pulverized coal airflow is sprayed into the furnace from the arch, and then turned upward; the secondary air is sent into the furnace from the upper and lower arches for pulverized coal combustion. The operation practice shows that the W flame boiler is relatively good in terms of combustion stability, low-load stable combustion capability and load performance, which ensures the stab...
Claims
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IPC IPC(8): F23C7/00
Inventor 刘鹏远廖永浩孙少鹏田鑫陈剑
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD