Combined copious cooling, condensing and de-whitening system for flue gas
A deep cooling, flue gas condenser technology, applied in gas treatment, fixed tubular duct assemblies, lighting and heating equipment, etc., can solve the problems of large heat consumption, large equipment, reduce the moisture content of flue gas, etc., to reduce dust The effect of emissions
Pending Publication Date: 2019-08-20
NANJING CHENGUANG GRP
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Problems solved by technology
Simple flue gas reheating needs to consume a lot of heat, and does not really reduce the water content in the flue gas. The effect of removing mist and rain is average, and it is more used as a supplementary method
Such as rotary GGH, tubular GGH, MGGH, heat pipe heat exchanger, steam heat exchanger, etc.; the flue gas condensation technology is to reduce the flue gas temperature and remove water by installing a flue gas condensation heat exchanger after desulfurization to achieve the purpose of dewhitening. big, high investment
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[0015] The flue gas deep cooling and condensation cooperative whitening system of the present invention is suitable for boiler 1 flue gas whitening treatment, such as figure 1 As shown, the flue gas from boiler 1 enters the tail flue after combustion and heat exchange, passes through dust collector 2, induced draft fan 3 in turn, and then enters desulfurization tower 5 for flue gas purification treatment before being discharged into chimney 7. Through the deep cooler 4 of the flue gas in front of the desulfurization tower and the flue gas condenser 6 behind the desulfurization tower, deep cooling and condensation are carried out in cooperation to reduce the temperature and water content of the flue gas, so as to achieve the purpose of energy saving, water saving and whitening; at the same time, the flue gas The secondary scrubbing of desulfurization flue gas by gas condensate liquid can effectively reduce dust emission.
[0016] The deep cooler 4 and the flue gas condenser 6 a...
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The invention discloses a combined copious cooling, condensing and de-whitening system for flue gas. The combined copious cooling, condensing and de-whitening system comprises a dust remover, an induced draft fan, a desulfurization tower and a chimney, wherein a copious cooling device and a flue gas condensing device are respectively arranged before and behind the desulfurization tower; the copious cooling device is arranged between the induced draft fan and the inlet of the desulfurization tower; and the flue gas condensing device is arranged between the outlet of the desulfurization tower and the chimney. According to the invention, copious cooling of the flue gas before the desulfurization tower and condensation of the flue gas behind the desulfurization tower are carried out, and the water content of a flue gas outlet is reduced through multi-stage cooling and condensation, so the purposes of water conservation and de-whitening are achieved; meanwhile, dust emission can be effectively reduced through secondary washing of the desulfurized flue gas by flue gas condensing liquid.
Description
technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a flue gas deep cooling, condensation and collaborative dewhitening system. Background technique [0002] For the flue gas outlet temperature of the wet desulfurization system is supersaturated wet flue gas, the flue gas temperature is 50-55°C, and it carries a large amount of water vapor, so the desulfurization system needs a large amount of water replenishment. At the same time, because the flue gas carries a large amount of water vapor, when the flue gas is discharged into the atmosphere from the chimney and cooled, white smoke and rain are produced. [0003] At present, the mainstream wet plume treatment technologies include flue gas reheating technology and flue gas condensation technology. Simple flue gas reheating needs to consume a lot of heat, and does not really reduce the water content in the flue gas. The effect of removing mist and rain is average, and it...
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IPC IPC(8): B01D53/26B01D50/00F23J15/06F28D7/00
CPCB01D53/265B01D50/00F23J15/06F28D7/00B01D2258/0283
Inventor 叶超峰周小康赵以保
Owner NANJING CHENGUANG GRP