Device for eliminating white smoke plume from chimney

A white, smoke plume technology, applied in the field of energy saving and emission reduction, can solve the problems of harmful gases discharged into the atmosphere, environmental pollution, etc., and achieve the effect of improving thermal efficiency and high system flexibility

Pending Publication Date: 2018-07-31
NORTH CHINA POWER ENG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the "white smoke plume" has no impact on environmental quality, it is extremely easy to be

Method used

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  • Device for eliminating white smoke plume from chimney
  • Device for eliminating white smoke plume from chimney

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Embodiment Construction

[0018] The invention protects a device applied to a coal-fired power station and capable of eliminating white smoke plumes in chimneys with zero energy consumption.

[0019] Such as figure 1 As shown in the existing structure diagram, the flue gas generated by combustion in the furnace 1 of the coal-fired power station is denitrated by SCR2, then cooled by the air preheater 3, and then enters the desulfurization tower 5 after passing through the dust collector 4. There is flue gas before and after the desulfurization tower 5 The heating system, that is, the second exchanger 62 is installed on the inlet flue of the desulfurization tower, and the flue gas heater 61 is installed on the outlet flue, and the two form a heating circuit 63 . The second exchanger 62 is for the flue gas pipeline before the entrance of the desulfurization tower 5 to pass through and perform heat exchange, absorbing the heat Q0 of the flue gas, and the flue gas heater 61 is to pass through the flue gas p...

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Abstract

The invention provides a device for eliminating a white smoke plume from a chimney. An outlet of a desulfurization tower is provided with a flue gas cooling system and a flue gas heating system in sequence; heat of desulfurized smoke is absorbed by the flue gas cooling system, and transferred to a secondary air pipeline and a primary air pipeline; and the heat of high-temperature flue gas before desulfurization is absorbed by the flue gas heating system, and transferred to the flue gas cooling system for heating cooled flue gas. According to the device, the flue gas is cooled firstly, and condensation water is participated; the specific heat of wet flue gas is reduced, and then the required heat for heating the flue gas is reduced; thus, the white smoke plume is eliminated effectively; meanwhile, the energy consumption is reduced; and the flexibility is high, and the device saves energy and is environmentally friendly.

Description

technical field [0001] The invention belongs to the field of energy saving and emission reduction, and relates to a device and technology for eliminating white plumes of chimneys with zero energy consumption. Background technique [0002] At present, most coal-fired power stations in my country adopt the limestone-gypsum wet desulfurization process. The flue gas after desulfurization usually reaches a saturated state, and the temperature drops to 45°C to 55°C. , tend to condense into small droplets, forming a "white plume", especially in winter, the phenomenon of "white plume" is more obvious. Although the "white plume" has no impact on the quality of the environment, it is extremely easy to be mistaken for harmful gases discharged into the atmosphere, causing "sensory" environmental pollution. Therefore, the control of "white smoke plume" has become an important topic of energy-saving renovation of coal-fired power stations. [0003] According to the temperature and humidi...

Claims

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Application Information

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IPC IPC(8): F23J15/06F23J15/08
CPCF23J15/06F23J15/08Y02E20/30
Inventor 王巍白杰张广文
Owner NORTH CHINA POWER ENG
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