Sintered flue gas desulfurization device
A technology of desulfurization device and sintering flue gas, which is applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of low temperature level of mixed flue gas, sticky filter bags, and easy agglomeration of materials, etc., to achieve improvement Load adaptability, the effect of avoiding bag filter bag sticking and agglomeration
Active Publication Date: 2012-04-11
CISDI ENG CO LTD
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Problems solved by technology
In addition, at low load, the temperature level of the mixed flue gas entering the absorption tower is low due to the large flow rate of the recirculated flue gas
In this way, it is difficult to ensure that the temperature of the flue gas coming out of the absorption tower and then entering the bag filter is above the dew point temperature, which will easily cause the filter bag to stick to the bag and agglomerate
At the same time, due to the low temperature of the flue gas and materials in the absorption tower, it also makes the materials on the inner wall of the absorption tower easy to agglomerate
Method used
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[0015] The present invention will be further described below in conjunction with accompanying drawing:
[0016] Such as figure 1 As shown: the sintering machine flue gas 1 from the main exhaust fan 2 of the sintering machine head enters the absorption tower 6 from the lower part of the absorption tower 6 through the flue gas baffle door 4 of the absorption tower, and is sprayed into the absorption tower 6 in the absorption tower 6 The absorbent slurry 5 undergoes a direct contact reaction. After the desulfurized flue gas comes out of the absorption tower 6, it enters the flue gas heater 7 heated by the heating medium 8, and enters the dust collector 9 after heating up. The heat source medium of the flue gas heater can be one or more of electric energy, steam, flue gas of a sintering machine ring cooler, and flue gas of a hot blast generator. Changes in the heat source medium all belong to the protection scope of the present invention.
[0017] The clean flue gas after dust ...
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The invention discloses a sintered flue gas desulfurization device. A pipeline which is provided with a main exhaust fan (2) and an absorption tower flue gas damper (4) in turn is connected to the lower part of an absorption tower (6); the top of the absorption tower (6) is connected with a dust catcher (9), a draught fan (12), a smoke extraction damper (13) and a chimney (14) in turn through a pipeline; and a gas branch pipe which is provided with a branch pipe gas flow regulation damper (10) and a stop valve (11) is also connected to a pipeline between the dust catcher (9) and the draught fan (12). When the system starts and runs at low load or the flow of the flue gas greatly and continuously changes, the stability and continuous change of bed pressure in the absorption tower can be maintained by opening the stop valve of the branch pipe and regulating the opening of the branch pipe gas flow regulation damper on the basis of regulating a recycling pipeline damper. A flue gas heateris arranged between the absorption tower and the dust catcher, and the flue gas enters the dust catcher after temperature rise. The sintered flue gas desulfurization device greatly improves the load adapting capacity of a desulfurization system, reduces the probability of bed collapsing phenomenon during low-load operation, and also avoids the phenomena of sticky cloth filter bag and agglomeration during low-load operation.
Description
technical field [0001] The present invention relates to a device for removing sulfur-oxygen compound gases. Background technique [0002] Sintering is an important production process in ironmaking. Sulfur dioxide emitted from the sintering process accounts for more than 60% of the total emissions from steel production. Therefore, sintering flue gas desulfurization is the key to the steel industry to achieve sulfur dioxide emission reduction targets. [0003] At present, the flue gas desulfurization measures for sintering machines mainly include circulating fluidized bed method, limestone / lime-gypsum method, ammonia-ammonium sulfate method, ionic liquid method, dense phase dry tower method, rotary spray method, double alkali method, activated carbon law etc. Among them, circulating fluidized bed semi-dry flue gas desulfurization using flue gas recirculation is favored by many users because of its small footprint, almost no waste water discharge, simple system, and relative...
Claims
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IPC IPC(8): B01D53/80B01D53/50
Inventor 陈继辉侯祥松丹宇
Owner CISDI ENG CO LTD