CN103706245A - Integrated sintering flue gas desulfurization/dioxin removal/dust collection equipment without electrostatic dust collector - Google Patents

Integrated sintering flue gas desulfurization/dioxin removal/dust collection equipment without electrostatic dust collector Download PDF

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Publication number
CN103706245A
CN103706245A CN201310713790.3A CN201310713790A CN103706245A CN 103706245 A CN103706245 A CN 103706245A CN 201310713790 A CN201310713790 A CN 201310713790A CN 103706245 A CN103706245 A CN 103706245A
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CN
China
Prior art keywords
desulfurization
desulfurizing tower
outlet
flue gas
entrance
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Pending
Application number
CN201310713790.3A
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Chinese (zh)
Inventor
宋七棣
徐天平
王永忠
吴建新
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KELIN ENVIRONMENTAL PROTECTION EQUIPMENT Inc
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KELIN ENVIRONMENTAL PROTECTION EQUIPMENT Inc
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Priority to CN201310713790.3A priority Critical patent/CN103706245A/en
Publication of CN103706245A publication Critical patent/CN103706245A/en
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Abstract

The invention relates to integrated sintering flue gas desulfurization/dioxin removal/dust collection equipment without an electrostatic dust collector. The equipment comprises a pre-dust collector, a main exhaust fan, a desulfurization tower, a bag-type dust collector and a desulfurization fan, wherein an inlet of the pre-dust collector is communicated with a gas box of a sintering machine; an inlet of the main exhaust fan is communicated with an outlet of the pre-dust collector; an inlet of the desulfurization tower is communicated with an outlet of the main exhaust fan; an inlet of the bag-type dust collector is communicated with an outlet of the desulfurization tower; an inlet of the desulfurization fan is communicated with an outlet of the bag-type dust collector; an outlet of the desulfurization fan is communicated with outside atmosphere; the all parts are communicated through flues; the inlet of the desulfurization tower is also communicated with a slaked lime chamber and an activated carbon chamber. According to the equipment, the existing electrostatic dust collector is eliminated and is replaced with the pre-dust collector, so that one-time investment cost is reduced, and the operating electric consumption of the electrostatic dust collector is reduced; meanwhile, the equipment has the environment-friendly functions of removing dioxin and heavy metal.

Description

A kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation
Technical field
the present invention relates to the flue gas desulfurization, Tuo bioxin, removing heavy-metal in stove field, dust removal integrated technology and equipment, particularly a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin that is applied to not establish in steel industry sintering process traditional electrical dedusting.
Background technology
the high-temperature flue gas that steel mill's sintering process produces all adopts electrostatic precipitator dedusting, and the gas after dedusting is sent into chimney through main exhauster and carried out high altitude discharge.Along with country environment protection emission is required increasingly strict, domestic 65% the not desulfurization of sintering device flue gas of still having an appointment at present, approximately 35% sintering machine has adopted the sulfur removal technology of various different modes, which kind of form desulfurization don't work, all do not break away from sinter fume and first adopt electrostatic precipitator, then adopt again desulfurization and more a kind of so i.e. consumption of dedusting invest and the pattern of power consumption and complex management.
Summary of the invention
the object of this invention is to provide a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation, the more environment-friendly function that has possessed de-bioxin and removing heavy-metal in the time of desulfurization, has the advantage that flue gas desulfurization and dedusting efficiency is high, workable, system security of operation stable, energy consumption is low.
for achieving the above object, the technical solution used in the present invention is:
the de-dust removal integrated equipment of bioxin of sintering flue gas desulfurization of not establishing electric precipitation, comprises with lower member:
pre-duster, the entrance of described pre-duster is connected with sintering machine gas tank;
main exhauster, the entrance of described main exhauster is connected with the outlet of described pre-duster;
desulfurizing tower, the entrance of described desulfurizing tower is connected with the outlet of described main exhauster;
sack cleaner, the entrance of described sack cleaner is connected with the outlet of described desulfurizing tower;
desulfurization blower fan, the entrance of described desulfurization blower fan is connected with the outlet of described sack cleaner, and outlet is connected with outside atmosphere;
between above-mentioned parts described in each, by flue, be connected, the entrance of described desulfurizing tower is also connected with niter ash silo, active carbon storehouse.
preferably, described pre-duster comprises that cyclone dust collectors or evaporation spray dust remover or evaporation spray dust remover and expansion chamber combine, pre-duster ash silo.
preferably, described desulfurizing tower is connected with for controlling the environmental barrier valve of flue gas variable quantity, and the entrance of described environmental barrier valve is connected with atmosphere, outlet is connected with the entrance of described desulfurizing tower.
preferably, described desulfurizing tower, sack cleaner are integrated setting, also comprise for the desulfurizing tower high-temperature flue gas mist cooling humidifying device to described, for collect described sack cleaner Desulphurization and turn back to the Desulphurization circulatory system that described desulfurizing tower recycles, for store described sack cleaner iterative cycles use after desulfurization ash silo and the ash-discharging device of Desulphurization, the described Desulphurization circulatory system comprises fluidized air blower, air flume.
preferably, described niter ash silo, active carbon storehouse are respectively arranged with metering device.
preferably, described pre-duster, main exhauster, desulfurizing tower, sack cleaner, desulfurization blower fan and flue are provided with attemperator.
because technique scheme is used, the present invention compared with prior art has following advantages:
the present invention has saved existing electrostatic precipitator, with pre-duster, replaces electrostatic precipitator, has saved investment cost one time, has also saved the operation power consumption of electrostatic precipitator; The more environment-friendly function that has simultaneously possessed Tuo bioxin and removing heavy-metal, has the advantage that flue gas desulfurization and dedusting efficiency is high, workable, system security of operation stable, energy consumption is low; Both met instantly strict environmental protection requirement, reduce investment outlay again and the energy resource consumption of electric cleaner, and process system had been simple to operate and convenient management.
Accompanying drawing explanation
accompanying drawing 1 is structural representation of the present invention.
wherein: 1, gas tank, 2, flue, 3, pre-duster, 4, main exhauster, 5, niter ash silo, 6, active carbon storehouse, 7, environmental barrier valve, 8, desulfurizing tower, 9, sack cleaner, 10, desulfurization blower fan, 11, chimney.
The specific embodiment
below in conjunction with drawings and Examples, the invention will be further described:
a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation as shown in Figure 1, connect sintering machine gas tank 1, comprise with lower member: a pre-duster 3, a main exhauster 4, a niter ash silo 5, an active carbon storehouse 6, an environmental barrier valve 7, a desulfurizing tower 8, a sack cleaner 9, a desulfurization blower fan 10, a chimney 11, all parts is communicated with by flue 2.This equipment has saved original electrostatic precipitator, in sintering desulfuration dust collecting process system, does not establish electrostatic precipitator, with pre-duster, replaces electrostatic precipitator.Wherein:
the entrance of pre-duster 3 is connected with sintering machine gas tank 1; The entrance of main exhauster 4 is connected with the outlet of pre-duster 3; The entrance of desulfurizing tower 8 is connected with the outlet of main exhauster 4; The entrance of sack cleaner 9 be connected with the outlet of desulfurizing tower 8 and with desulfurizing tower 8 are integrated setting; The entrance of desulfurization blower fan 10 is connected with sack cleaner 9 outlets, and outlet is connected with chimney 11; In addition, niter ash silo 5, active carbon storehouse 6 are connected with the entrance of desulfurizing tower 8; The entrance of environmental barrier valve 7 is connected with atmosphere, outlet is connected with the entrance of desulfurizing tower 8.
in the present embodiment: pre-duster 3 comprises cyclone dust collectors or evaporation spray dust remover or evaporation spray dust remover and expansion chamber combines, pre-duster ash silo.Environmental barrier valve 7 is pneumatic device for opening, to control the exhaust gas volumn that sintering working conditions change causes, changes, and prevents the desulfurizing tower 8 recirculating fluidized beds bed that collapses.Desulfurizing tower 8, niter ash silo 5 and active carbon storehouse 6 are for desulfurization, de-bioxin and removing heavy-metal, wherein: niter ash silo 5, active carbon storehouse 6 are respectively arranged with metering device.Top outlet and the inlet duct of sack cleaner 9 of desulfurizing tower 8 are closely connected to form desulfurizing tower-deduster integrated apparatus, flue gas after desulfurization directly enters sack cleaner 9 dedustings, be conducive to that Desulphurization is unimpeded enters deduster dedusting, save total figure simultaneously and take up an area.Integrated apparatus comprise for to desulfurizing tower 8 cooling high-temperature fume humidification spray cooling devices, for desulfurizing tower 8 recycle that rear Desulphurization stores and the Desulphurization stocking system of outward transport, for collecting bag type deduster 9 Desulphurizations and turn back to the Desulphurization circulatory system that desulfurizing tower 8 recycles, for store sack cleaner 9 iterative cycles use after desulfurization ash silo and the ash-discharging device of Desulphurization, sack cleaner 9 is pulse bag type dust collector, and the Desulphurization circulatory system comprises fluidized air blower, air flume.
in addition: pre-duster 3, main exhauster 4, desulfurizing tower 8, sack cleaner 9, desulfurization blower fan 10 and flue 2 are provided with attemperator, and deduster ash silo is provided with steam or electric heater unit.
concrete operating process of setting forth lower the present embodiment below:
the high-temperature dusty gas that sintering process produces, enters pre-duster 3 by each gas tank 1 by flue 2 and carries out pre-dedusting; Flue gas after dedusting is sent into desulfurizing tower 8 and calcium hydroxide from niter ash silo 5 and is carried out desulfurization and de-bioxin, removing heavy-metal react from the active carbon in active carbon storehouse 6 by main exhauster 4, and the gas analyzer that the additions such as calcium hydroxide arrange according to chimney 11 places is measured setting value and determined; Flue gas after desulfurization enters sack cleaner 9 purifying and dedustings, and the clean gas after dedusting is sent into chimney 11 qualified discharges by desulfurization blower fan 10.In addition, the spray cooling device that desulfurizing tower 8 and sack cleaner 9 form in integrated apparatus is controlled at 90 ℃ of left and right by desulfurizing tower 8 gas outlet temperatures; The Desulphurization circulatory system and the Desulphurization stocking system desulfurizing tower 8 of ash after sack cleaner 9 dedustings being made a gift to someone recycles, and the Desulphurization after recycling finally sends into that sack cleaner storage ash silo stores and regularly outward transport is recycled.
desulfuration efficiency by the present embodiment is more than 90%, and efficiency of dust collection is more than 99.9%, and the gas discharging dust content after desulfurization and dedusting is stabilized in 20mg/ mark m 3 below, SO 2 discharge is stabilized in 100mg/ mark m 3 below, even lower than 50mg/ mark m 3 .
the equipment of the present embodiment is applicable to the flue gas desulfurization and dedusting of newly-built sintering project.Take: the entrance of pre-duster 3 is communicated with sintering machine gas tank 1 by flue 2, the outlet of pre-duster 3 is communicated with main exhauster 4 entrances, main exhauster 4 outlets are connected with desulfurizing tower 8, the entrance of environmental barrier valve 7 connects atmosphere, outlet is arranged on the inlet duct of desulfurizing tower 8, the entrance of desulfurizing tower 8 is connected with active carbon storehouse 6 with niter ash silo 5 respectively, the inlet duct of the outlet of desulfurizing tower 8 and sack cleaner 9 is closely connected to form desulfurizing tower-deduster integrated apparatus, flue gas after desulfurization directly enters sack cleaner 9 dedustings, the outlet of sack cleaner 9 is communicated with chimney 11 by desulfurization blower fan 10.
the equipment of the present embodiment is also applicable to existing sintering dust transformation.Take: remove existing electric cleaner, with pre-duster 3, replace, retain existing main exhauster 4 and be communicated with desulfurizing tower 8, the entrance of environmental barrier valve 7 connects atmosphere, outlet is arranged on the inlet duct of desulfurizing tower 8, the entrance of desulfurizing tower 8 is connected with active carbon storehouse 6 with niter ash silo 5 respectively, the inlet duct of the outlet of desulfurizing tower 8 and sack cleaner 9 is closely connected to form desulfurizing tower-deduster integrated apparatus, flue gas after desulfurization directly enters sack cleaner 9 dedustings, and the outlet of sack cleaner 9 is communicated with chimney 11 by desulfurization blower fan 10.
above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (6)

1. the de-dust removal integrated equipment of bioxin of sintering flue gas desulfurization of not establishing electric precipitation, is characterized in that: comprise with lower member:
Pre-duster, the entrance of described pre-duster is connected with sintering machine gas tank;
Main exhauster, the entrance of described main exhauster is connected with the outlet of described pre-duster;
Desulfurizing tower, the entrance of described desulfurizing tower is connected with the outlet of described main exhauster;
Sack cleaner, the entrance of described sack cleaner is connected with the outlet of described desulfurizing tower;
Desulfurization blower fan, the entrance of described desulfurization blower fan is connected with the outlet of described sack cleaner, and outlet is connected with outside atmosphere;
Between above-mentioned parts described in each, by flue, be connected, the entrance of described desulfurizing tower is also connected with niter ash silo, active carbon storehouse.
2. a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation according to claim 1, is characterized in that: described pre-duster comprises cyclone dust collectors or evaporation spray dust remover or evaporation spray dust remover and expansion chamber combines, pre-duster storage ash silo.
3. a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation according to claim 1, it is characterized in that: described desulfurizing tower is connected with for controlling the environmental barrier valve of flue gas variable quantity, the entrance of described environmental barrier valve is connected with atmosphere, outlet is connected with the entrance of described desulfurizing tower.
4. a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation according to claim 1, it is characterized in that: described desulfurizing tower, sack cleaner is integrated setting, also comprise for the desulfurizing tower high-temperature flue gas mist cooling humidifying device to described, for collecting described sack cleaner Desulphurization and turning back to the Desulphurization circulatory system that described desulfurizing tower recycles, for storing described sack cleaner desulfurization ash silo and the ash-discharging device of the rear Desulphurization of iterative cycles use, the described Desulphurization circulatory system comprises fluidized air blower, air flume.
5. a kind of de-dust removal integrated equipment of bioxin of sintering flue gas desulfurization of not establishing electric precipitation according to claim 1, is characterized in that: described niter ash silo, active carbon storehouse are respectively arranged with metering device.
6. a kind of dust removal integrated equipment of sintering flue gas desulfurization Tuo bioxin of not establishing electric precipitation according to claim 1, is characterized in that: described pre-duster, main exhauster, desulfurizing tower, sack cleaner, desulfurization blower fan and flue are provided with attemperator.
CN201310713790.3A 2013-12-23 2013-12-23 Integrated sintering flue gas desulfurization/dioxin removal/dust collection equipment without electrostatic dust collector Pending CN103706245A (en)

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CN104962732A (en) * 2014-10-29 2015-10-07 安徽工业大学 Cooperative emission reduction method and system for SO2 and dioxin produced in sintering
CN105861816A (en) * 2015-01-22 2016-08-17 安徽工业大学 Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process
CN109913273A (en) * 2019-03-25 2019-06-21 上海电气集团股份有限公司 A kind of rubbish and biomass are total to gasification system and its operation method

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Publication number Priority date Publication date Assignee Title
CN104962732A (en) * 2014-10-29 2015-10-07 安徽工业大学 Cooperative emission reduction method and system for SO2 and dioxin produced in sintering
CN105861816A (en) * 2015-01-22 2016-08-17 安徽工业大学 Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process
CN105861816B (en) * 2015-01-22 2017-08-25 安徽工业大学 A kind of sintering process SO based on addition solid inhibitor2, bioxin cooperates with discharge-reducing method
CN109913273A (en) * 2019-03-25 2019-06-21 上海电气集团股份有限公司 A kind of rubbish and biomass are total to gasification system and its operation method

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Application publication date: 20140409