Coal burning boiler flue gas desulfurization method and device
A technology for coal-fired boilers and flue gas, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc., can solve the problems of short gas-liquid contact time, large pressure drop, and many equipments of water film dust collectors
Active Publication Date: 2009-01-07
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, the gas-liquid contact time of the water film dust collector is very short, its desulfurization effect is limited, and the dust removal water and slag flushing water adopt a two-way circulation system, which requires more equipment, larger pressure drop, and higher investment and operating costs.
Method used
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Embodiment 1～5
[0018] according to figure 2 process. The upper part of the spray tower adopts three-stage countercurrent spraying, the middle part adopts a bed of nut packing, and the lower part is equipped with co-direction (upward) co-current spraying. The flue gas inlet temperature is 170°C. The operating conditions and results are shown in Table 1.
[0019] The equivalent diameter of the massive alkaline substance is the diameter of a sphere having the same volume as the massive alkaline substance.
[0020] Table 1 embodiment operating conditions and results
[0021] Example
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Abstract
The invention relates to a smoke desulfuration method in boiler. Wherein, it uses the ash wash slag water as the water source of smoke desulfuration; the liquid outside the spray tower is used to transmit ash slag; the bottom of spray tower is arranged with block alkali material, to improve the water alkali. The invention comprises spray tower, ash wash slag groove, ash slag pool, deposit pool, adjust pool, slag spade, fan, several cyclone dust collector, and several tube. The invention has low cost and low power consumption.
Description
technical field [0001] The invention relates to a coal-fired boiler flue gas desulfurization method and device, which belong to the field of environmental treatment methods and industrial devices, and are suitable for coal-fired boiler flue gas desulfurization. Background technique [0002] SO 2 It is a global air pollutant, and its main hazard is the formation of acid rain. Also, SO in the environment 2 It can lead to a decline in children's immune function, and an increase in the prevalence of respiratory and eye diseases among the general public. SO 2 The emission sources mainly include coal-fired thermal power plants, small and medium-sized coal-fired industrial boilers and other industrial and civil facilities. Among them, small and medium coal-fired industrial boilers can generally account for SO 2 30% of total emissions. Therefore, the development and application of complete sets of flue gas desulfurization technology for coal-fired industrial boilers is very im...
Claims
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IPC IPC(8): B01D53/50B01D53/78
Inventor 刘忠生齐慧敏彭德强戴文军
Owner CHINA PETROLEUM & CHEM CORP