CN205893312U - BOF steelmaking dust pelletizing system - Google Patents

BOF steelmaking dust pelletizing system Download PDF

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Publication number
CN205893312U
CN205893312U CN201620850512.1U CN201620850512U CN205893312U CN 205893312 U CN205893312 U CN 205893312U CN 201620850512 U CN201620850512 U CN 201620850512U CN 205893312 U CN205893312 U CN 205893312U
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China
Prior art keywords
desulfurization
directly
dust
molten iron
pelletizing system
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Application number
CN201620850512.1U
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Chinese (zh)
Inventor
任华金
罗新生
邱军
尹丽
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Sichuan Desheng Group Vanadium Titanium Co Ltd
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Sichuan Desheng Group Vanadium Titanium Co Ltd
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Abstract

The utility model discloses a BOF steelmaking dust pelletizing system, directly convert a little and the desulfurization station including the molten iron, the molten iron is directly converted and a little is provided with three departments, and the desulfurization station is provided with a desulfurization station and no. Two desulfurization stations, and three molten iron are directly converted a little one set sharing and are directly converted the dust pelletizing system to the dust removal demand that the minimum dust removal power of directly converting the dust pelletizing system satisfies two molten iron when directly converting some coproductions, desulfurization station and no. Two desulfurization stations one set of desulfurization and dust removal system that shares is and the dust removal demand when a satisfied desulfurization station of desulfurization and dust removal system and no. Two desulfurization station coproductions. BOF steelmaking dust pelletizing system directly convert a little and the desulfurization station has set up the dust pelletizing system respectively for the molten iron to according to the suction hood that the molten iron was directly converted a little and the smoke and dust at desulfurization station diffusion configure path corresponds, the smoke and dust that produces when effectively getting rid of the molten iron and directly converting with the desulfurization improves dust removal effect, reduce environmental pollution.

Description

A kind of pneumatic steelmaking dust pelletizing system
Technical field
This utility model is related to the udst separation technical field of STEELMAKING PRODUCTION, more particularly, to a kind of pneumatic steelmaking dedusting system System.
Background technology
Pneumatic steelmaking no matter heat size size and adopt which kind of flow process, its basic working procedure and pollution node all have similar it Place, in pneumatic steelmaking pollution node, stock preparation system such as blanking bin.Belt rotates etc. all sealing device and a dust pelletizing system, and one As regulation effect preferably, belong to and discharge in a organized way.Flue gas of converter and secondary flue gas all have flue gas trapping and purifier, energy Enough effectively prevent flue gas excessive.But after the molten iron in hot-metal bottle is blended into converter, hot-metal bottle can produce substantial amounts of flue dust, edge The lifting diffusion upwards of hot-metal bottle tank skin, rises to Factory Building top and emerges, this link is limited by process conditions, volume of smoke cannot be effective Trapping, can cause serious environmental pollution.Simultaneously in the flow process of desulfurizing iron, the dust excluding hood at desulfurization station is on ladle side Side, the most of flue gas that not in effective capture range of dust excluding hood, dust excluding hood is collected of the flue gas that desulfurization produces is little, most of Flue gas bleeds around bumping against platform tailing edge platform bottom, and environment is poor, seriously polluted, and infringement staff's is healthy.
Utility model content
Technical problem to be solved in the utility model and the technical assignment proposing are that prior art is improved, and provide A kind of pneumatic steelmaking dust pelletizing system, the molten iron solving in convertor steelmaking process in current technology is blended in converter and sweetening process The flue dust producing cannot effectively trap, the serious problem of environmental pollution.
For solving above technical problem, the technical solution of the utility model is:
A kind of pneumatic steelmaking dust pelletizing system, directly converts a little including molten iron and desulfurization station is it is characterised in that molten iron arrives according to blast furnace Molten iron is directly converted a little, then goes to cage to after the pre- desulfurization in desulfurization station, and the flow process that half steel smelted by last vanadium extraction stove is produced, and molten iron is straight Convert and be a little provided with three, desulfurization station is provided with a desulfurization station and No. two desulfurization stations, at three, molten iron is directly converted a little to share and a set of directly converted Dust pelletizing system, and directly convert the minimum dedusting power of dust pelletizing system and meet molten iron at two and directly convert a little dedusting need during production simultaneously Ask, a desulfurization station and No. two desulfurization stations share a set of desulfurization dust-removal system, and desulfurization dust-removal system meets a desulfurization station Dedusting demand when simultaneously producing with No. two desulfurization stations.This utility model directly converts a little for molten iron and desulfurization station is respectively provided with dedusting System, effectively removes molten iron and directly converts and the flue dust producing during desulfurization, improve dust removing effects, reduce environmental pollution.
Further, described dust pelletizing system of directly converting directly converts a upside setting dedusting suction in molten iron by the way of top is inhaled Cover, molten iron is directly converted the flue dust a producing concentration and is diffused up, and can effectively improve dust removing effects, desulfurization dust-removal system using top suction type The side setting side-draught hood at a desulfurization station and No. two desulfurization stations by the way of side is inhaled, the flue dust producing in desulfurization processing is big Part bleeds around bumping against platform tailing edge platform bottom, can improve dust removing effects using side-suction type.
Further, described directly convert dust pelletizing system by directly converting aiutage, directly convert blower fan and directly convert cleaner unit and be sequentially connected Composition, the systematic air flow directly converting blower fan is 70~800,000 m3/ h, the pressure head directly converting blower fan is maintained at 4200~4300pa, directly converts and removes Dirt device adopts sack cleaner, and sack cleaner is applied to tiny, dry, the non-fiber dust of trapping, and structure is simple, and dedusting is imitated Really good.
Further, the described dust removal and filtration area directly converting cleaner unit is 9000~10000m2, increasing the same of air quantity When filter area increase to reach rational filtration velocity.
Further, described desulfurization dust-removal system is sequentially connected by desulfurization aiutage, desulfurization blower fan and desulfurizing dust-collector Composition, the systematic air flow of desulfurization blower fan is 40~500,000 m3/ h, the pressure head of desulfurization blower fan is maintained at 4300~4500pa, and desulfurization removes Dirt device adopts sack cleaner.
Further, the dust removal and filtration area of described desulfurizing dust-collector is 5000~6000m2.
Compared with prior art, this utility model advantage is:
Pneumatic steelmaking dust pelletizing system described in the utility model directly converts a little for molten iron and desulfurization station is respectively provided with dedusting system System, and directly converted a little according to molten iron and the flue dust the evolving path at desulfurization station arranges corresponding dust shield, effectively remove molten iron directly convert with The flue dust producing during desulfurization, improves dust removing effects, reduces environmental pollution;This utility model structure is simple, it is easy to accomplish, it is transformed into This is low, and business efficiency is high.
Brief description
Fig. 1 is the structural representation directly converting dust pelletizing system;
Fig. 2 is the structural representation of desulfurization dust-removal system.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
A kind of pneumatic steelmaking dust pelletizing system disclosed in this utility model embodiment, directly convert by molten iron simultaneously for setting multiple spot, and A setting dust arrester directly converted by molten iron, and desulfurization station is separately provided dust arrester, reduces smoke contamination, improves working environment quality.
As depicted in figs. 1 and 2, a kind of pneumatic steelmaking dust pelletizing system, molten iron is directly converted a little to molten iron according to blast furnace, then arrives desulfurization Stand and go to cage after pre- desulfurization, the flow process that half steel smelted by last vanadium extraction stove is produced, and molten iron is directly converted and is a little provided with three, desulfurization Station is provided with a desulfurization station and No. two desulfurization stations, and at three, molten iron is directly converted and is a little separately positioned on river side on a desulfurization station, No. two Desulfurization station is gone to river near side and let-down stations, and at cage/seat tank point setting 3, go to river side in number desulfurization station of displacement respectively, No. one, two Number desulfurization station centre position, river side on No. two desulfurization stations, every iron clad water yield of blast-melted bag is 65~80t, often during bag iron making Between 1~2min, the blowing gas at desulfurization station adopt nitrogen, pressure 0.5~0.7mpa, flow 180~300m3/ h, every iron clad ash Desulfurization time is 10~12min, sprays Calx 100kg/min, and at three, molten iron is directly converted and a little shared a set of directly converted dust pelletizing system, and directly The minimum dedusting power converting dust pelletizing system meets molten iron at two and directly converts a little dedusting demand during production simultaneously, a desulfurization station and two Number desulfurization station shares a set of desulfurization dust-removal system, and desulfurization dust-removal system meets a desulfurization station and No. two desulfurization stations are given birth to simultaneously Dedusting demand during product.
Directly convert a little flue dust the evolving path with desulfurization station according to molten iron, directly convert dust pelletizing system by the way of top is inhaled in molten iron Directly convert a upside setting dedusting suction hood, desulfurization dust-removal system is by the way of the suction of side in the side at a desulfurization station and No. two desulfurization stations Side arranges side-draught hood, effectively improves dust removing effects.
Directly convert dust pelletizing system by directly converting aiutage, directly convert blower fan and directly convert cleaner unit and be sequentially connected and form, directly convert blower fan Systematic air flow is 70~800,000 m3/ h, the pressure head directly converting blower fan is maintained at 4200~4300pa, directly converts cleaner unit and is removed using pocket type Dirt device, the dust removal and filtration area directly converting cleaner unit is 9000~10000m2.
Desulfurization dust-removal system is sequentially connected and is formed by desulfurization aiutage, desulfurization blower fan and desulfurizing dust-collector, desulfurization blower fan Systematic air flow is 40~500,000 m3/ h, the pressure head of desulfurization blower fan is maintained at 4300~4500pa, and desulfurizing dust-collector is removed using pocket type Dirt device, the dust removal and filtration area of desulfurizing dust-collector is 5000~6000m2.
Directly convert dust pelletizing system and the cleaning shaft of desulfurization dust-removal system need to be arranged in charging aisle by e colonnade, so that ferrum bag hangs Fortune (in charging across (i.e. ef across) 2~3 lines, e row will place empty ferrum bag with tipping car interorbital).
Electric power system is powered by a road power supply, in steel-making distribution substation's 10kv high voltage power supply and Ventilator Room switchgear house 380v power supply Each setting one road point of interface;Supply provides 0.3~0.45mpa source of the gas one road to dedusting from steel-making import let-down stations nitrogen air accumulator System air accumulator, flow cannot be less than 15m3/min;Cooling water source provides a road to dedusting master from steelwork converter water treatment station Blower motor, output is not less than 25m3/ h, water temperature must not be higher than 35 DEG C, and pressure of supply water is not less than 2~2.5kg, according to technique Control and require, two kinds of modes of operation are controlled dust pelletizing system on the spot using collection neutralization, and electric panel room operation includes low voltage control behaviour Make room and high voltage control operating room.Equipment centralized operation can be carried out in operating room, and the requirement according to technology controlling and process, scene If the other control box of machine, the other case of machine is provided with far controls permutator, on the spot to carry out on-site control and inspection operation, dedusting to equipment Blower fan adopts converter reduction of speed to start and speed governing, can meet power frequency startup when frequency conversion equipment is out of order.
When using the pneumatic steelmaking dust pelletizing system after improving, dust pelletizing system air leak rate of air curtain has been less than 5%, and dust arrestment rate is big In 95%, cleaner unit air vent dust content has been less than 25mg/n m3.
The above is only preferred implementation of the present utility model it is noted that above-mentioned preferred implementation should not regard It is to restriction of the present utility model, protection domain of the present utility model should be defined by claim limited range.For For those skilled in the art, without departing from spirit and scope of the present utility model, can also make some Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (6)

1. a kind of pneumatic steelmaking dust pelletizing system, including molten iron directly convert a little and desulfurization station it is characterised in that molten iron according to blast furnace to ferrum Water is directly converted a little, then goes to cage to after the pre- desulfurization in desulfurization station, and the flow process that half steel smelted by last vanadium extraction stove is produced, and molten iron is directly converted Point is provided with three, and desulfurization station is provided with a desulfurization station and No. two desulfurization stations, and at three, molten iron is directly converted a little shared a set of directly converting and removed Dirt system, and directly convert the minimum dedusting power of dust pelletizing system and meet molten iron at two and directly convert a little dedusting demand during production simultaneously, A number desulfurization station and No. two desulfurization stations share a set of desulfurization dust-removal system, and desulfurization dust-removal system meets a desulfurization station and two Dedusting demand when number desulfurization station produces simultaneously.
2. pneumatic steelmaking dust pelletizing system according to claim 1 is it is characterised in that described directly converts dust pelletizing system using top The mode inhaled directly converts a upside setting dedusting suction hood in molten iron, desulfurization dust-removal system adopt by the way of the suction of side a desulfurization station with The side setting side-draught hood at No. two desulfurization stations.
3. pneumatic steelmaking dust pelletizing system according to claim 1 is it is characterised in that described dust pelletizing system of directly converting is by directly converting Aiutage, directly convert blower fan and directly convert cleaner unit and be sequentially connected composition, the systematic air flow directly converting blower fan is 70~800,000 m3/ h, directly converts The pressure head of blower fan is maintained at 4200~4300pa, directly converts cleaner unit and adopts sack cleaner.
4. pneumatic steelmaking dust pelletizing system according to claim 3 is it is characterised in that the described dedusting directly converting cleaner unit Filtering surface amasss as 9000~10000m2.
5. pneumatic steelmaking dust pelletizing system according to claim 1 is it is characterised in that described desulfurization dust-removal system is by desulfurization Aiutage, desulfurization blower fan and desulfurizing dust-collector are sequentially connected composition, and the systematic air flow of desulfurization blower fan is 40~500,000 m3/ h, desulfurization The pressure head of blower fan is maintained at 4300~4500pa, and desulfurizing dust-collector adopts sack cleaner.
6. pneumatic steelmaking dust pelletizing system according to claim 5 is it is characterised in that the dedusting of described desulfurizing dust-collector Filtering surface amasss as 5000~6000m2.
CN201620850512.1U 2016-08-08 2016-08-08 BOF steelmaking dust pelletizing system Active CN205893312U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620850512.1U CN205893312U (en) 2016-08-08 2016-08-08 BOF steelmaking dust pelletizing system

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Application Number Priority Date Filing Date Title
CN201620850512.1U CN205893312U (en) 2016-08-08 2016-08-08 BOF steelmaking dust pelletizing system

Publications (1)

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CN205893312U true CN205893312U (en) 2017-01-18

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CN201620850512.1U Active CN205893312U (en) 2016-08-08 2016-08-08 BOF steelmaking dust pelletizing system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665928A (en) * 2019-10-14 2020-01-10 云南德胜钢铁有限公司 Dust cleaning method for molten iron desulphurization pretreatment station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665928A (en) * 2019-10-14 2020-01-10 云南德胜钢铁有限公司 Dust cleaning method for molten iron desulphurization pretreatment station

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