A coke oven dust removal flue gas desulfurization purification process and device
A coke oven dust removal and purification process technology, which is applied in the direction of climate change adaptation, climate sustainability, chemical instruments and methods, etc., can solve the problems of complex components of coke oven flue gas, high velocity of coke oven flue gas, and slow concentration drop , to achieve the effects of reducing air pollution, high desulfurization efficiency, and fast reaction speed
Active Publication Date: 2017-05-17
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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Problems solved by technology
[0008] (3) SO 2 Concentration drops slowly
[0010] (4) Composition of coke oven flue gas is complex
[0012] (5) High coke oven flue gas velocity and short conveying distance
Method used
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[0040] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0041] See figure 1 , process flow diagram of the present invention. A coke oven dedusting flue gas desulfurization and purification process of the present invention comprises sodium carbonate solution preparation, desulfurization and flue gas dedusting processes, the specific steps are as follows:
[0042] 1) Suction and pressure delivery tanker 15 sends sodium carbonate powder into sodium carbonate powder bin 9 for storage, and quantitatively supplies sodium carbonate powder into sodium carbonate liquid mixing tank 6 through star discharge valve 8 and screw weighing feeding device 7 , after mixing with process water, make the sodium carbonate solution of required concentration and store in the sodium carbonate solution tank 5; The sodium carbonate solution mixing tank 6 and the sodium carbonate solution tank 5 are equipped with electric stirrer...
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The invention relates to a dust removal and flue gas desulfurization and purification process and device for a coke oven. A two-fluid atomizing nozzle is arranged at the flue gas inflow end of a flue gas collection pipe, an inner-lining ceramic wear pipe is arranged on the flue gas collection pipe in a desulfurization reaction area, and the flue gas outflow end of the flue gas collection pipe is connected with a dust removal purification system; sodium carbonate powder and process water are mixed to prepare a sodium carbonate solution which enters the two-fluid atomizing nozzle through a solution pump and is injected into the inner-lining ceramic wear pipe to fully react with SO2 to produce sulfate, the product enters the dust removal purification system along with flue gas to be collected, and clean air obtained after desulphuration and dust removal is discharged outside. In combination of the characteristic of flue gas dust removal of a coke oven, the soda semi-dry method is adopted for desulphuration, so that the flue gas discharge index of the coke oven meets the demand of the national emission standard, and atmospheric pollution is reduced; the process is simple, the investment is low, the operation is convenient, the auto-control system is perfect, the desulphurization efficiency is high, the problems of quick phased climbing and high peak value of the concentration of SO2 in flue gas of the coke oven are solved, and the consumption of a desulfurization agent can be reduced.
Description
technical field [0001] The invention relates to an industrial waste gas purification treatment technology, in particular to a coke oven dust removal flue gas desulfurization purification process and device. Background technique [0002] The "Emission Standards for Pollutants in the Coking Chemical Industry" (GB16171-2012) (hereinafter referred to as "emission standards") clearly stipulates that from January 1, 2015, new and old coke ovens in general areas will be charged with coal and coke pushing flue gas Medium SO 2 The emission concentration limit is 50mg / m 3 , the special limit area is 30mg / m 3 , the current flue gas purification technology in the coking field can only meet the requirements of particulate matter emission standards, but for SO 2 Purification has not yet had any effective means. [0003] According to the actual measurement of the existing coke oven flue gas, the emission of coke oven flue gas has the following characteristics: [0004] (1) Periodic an...
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Login to View More IPC IPC(8): B01D53/80B01D53/50B01D46/02
CPCY02A50/2351
Inventor 张颖孙刚森尹华吕文彬
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC