CN209602579U - A kind of blast furnace stops wind flue gas processing device again - Google Patents

A kind of blast furnace stops wind flue gas processing device again Download PDF

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Publication number
CN209602579U
CN209602579U CN201822209583.5U CN201822209583U CN209602579U CN 209602579 U CN209602579 U CN 209602579U CN 201822209583 U CN201822209583 U CN 201822209583U CN 209602579 U CN209602579 U CN 209602579U
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CN
China
Prior art keywords
gas
blast furnace
flue gas
pipeline
furnace roof
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Expired - Fee Related
Application number
CN201822209583.5U
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Chinese (zh)
Inventor
李震宙
张韵
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Shanghai Oucheng Metallurgical Complete Equipment Co Ltd
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Shanghai Oucheng Metallurgical Complete Equipment Co Ltd
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Priority to CN201822209583.5U priority Critical patent/CN209602579U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of blast furnaces to stop wind flue gas processing device again, including blast furnace roof, the first blast furnace roof desorption tube and the second blast furnace roof desorption tube, blast furnace roof is respectively communicated with blast furnace roof No.1 bleeding valve and No. two bleeding valves by furnace roof spherical tank (or coal gas tedge).The utility model passes through cyclone dust collectors, gas cooler, gas-liquid separator, graphited ethylene-steam condenser, flue gas heater, the setting of circulating heat pump and chimney, CO can largely be contained to generating during direct emission, CO2 and dust it is toxic, combustible mixed gas is sufficiently handled, solve the problems, such as that current flue gas processing device cannot sufficiently be handled pernicious gas, avoid air environmental pollution, dust-laden particle in high-temperature flue gas that can be in line to blast furnace recycles, and pernicious gas is subjected to hydration process, so that the flue gas of discharge reaches national emission standard, it is worthy to be popularized.

Description

A kind of blast furnace stops wind flue gas processing device again
Technical field
The utility model relates to pernicious gas processing technology field, specially a kind of blast furnace is stopped wind again and is filled with fume treatment It sets.
Background technique
Damping down and multiple wind are the method for operating blast furnace that blast furnace temporarily ceases production and then resumes production, and blast furnace stops production It is just off with the basic operation resumed production and blast furnace of blowing in furnace is blown and restored in furnace, in process of production because of inspection Repair, processing accident or other reasons need interrupt production when, out-of-blast smelting is just called damping down, according to the length of damping down time Short, damping down 4h or more just claims long term blowing-down.Damping down 4h hereinafter, then claim short term damping-down, long term blowing-down can be divided into again plan damping down with Unplanned (accident) damping down, plan damping down can also be divided into the full furnace charge damping down of plan and plan drop part charge level damping down.
Blast furnace is stopped, under multiple wind state, a large amount of coal gas of high temperature will be discharged from blast furnace roof desorption tube, in these coal gas of high temperature Containing a large amount of dust, the white flue gas given off will seriously pollute environment, due to desorption tube top saturation wet flue gas stream with Cold air contact outside desorption tube, the decline of wet flue gas temperature, moisture are in hypersaturated state, form droplet, therewith, droplet meeting Accumulation forms big drop, starts secondary condensation and forms water mist, until humid air temperature is substantially close to big temperature at bleeder top Degree, secondary condensation reaches the water mist hangover for utmostly forming desorption tube top, belongs to hypersaturated state, therefore generates a large amount of Plumage mist contains toxic, the combustible mixing pernicious gas of a small amount of CO, CO2 and dust in these plumage mists, with the row of flue gas It puts, drifts in atmosphere, atmosphere is polluted, form acid rain, destroy atmospheric strument, building etc..
The flue gas of blast furnace roof release at present generated during direct emission largely containing CO, CO2 and dust it is toxic, can Combustion things mixed gas, causes air environmental pollution, as country keeps under strict control to environmental protection, takes newly-increased environmentally friendly tax, formulates and avoid the peak hour Limited production strictly monitors discharge state, and most enterprises take the late into the night to stop, multiple wind measure, do not have to evade the monitoring of country Have fundamentally to give and solve.
Utility model content
The purpose of this utility model is to provide a kind of blast furnaces to stop wind flue gas processing device again, and having can be to blast furnace flue gas In pernicious gas the advantages of sufficiently being handled, pernicious gas cannot sufficiently be located by solving current flue gas processing device The problem of reason.
To achieve the above object, the utility model provides the following technical solutions: a kind of blast furnace is stopped wind again and is filled with fume treatment It sets, including blast furnace roof is referred to as blast furnace roof No.1 bleeding valve and No. two bleeding valves, the blast furnace roof passes through Furnace roof spherical tank (or coal gas tedge) is respectively communicated with referred to as blast furnace roof No.1 bleeding valve and No. two bleeding valves, institute It states No.1 bleeding valve and No. two bleeding valves passes through release cross over pipe connection, referred to as release general pipeline, the release The tube wall surface of general pipeline is equipped with release main valve, and the release general pipeline is communicated with cyclone dust removal far from one end of release cross over pipe Device, the cyclone dust collectors are communicated with blast furnace bucket by pipeline, the pipeline peace between the cyclone dust collectors and blast furnace bucket Equipped with particulate matter unloading valve;
The exhaust pipe of the cyclone dust collectors is communicated with gas cooler, the exhaust pipe of the gas cooler by pipeline It is communicated with gas-liquid separator by pipeline, the outlet of the gas-liquid separator is communicated with graphited ethylene-steam by pipeline and condenses Device, the graphited ethylene-steam condenser gas outlet are communicated with flue gas heater, the flue gas heater and cigarette by pipeline Circulating heat pump is communicated with by pipeline between Gas Cooler, the flue gas heater gas outlet is communicated with smoke evacuation cigarette by pipeline Chimney.
Preferably, the inner wall of the cyclone dust collectors is equipped with wear-resistant liner, and the gas cooler uses the water of shell and tube Direct cooling mode, cooling capacity are 600 cubes/min~3500 cube/min.
Preferably, the separation method of the gas-liquid separator is ultra-filtration and separation, and the different gas-liquid mixture of particle passes through micro- Hole filter is sieved, and for liquid because gravity downstream to separator bottom and is discharged, gas enters graphited ethylene-steam condensation Device.
Preferably, the condensation of a large amount of DN20 is housed in the graphited ethylene-steam condenser association system all parts Steel pipe, and condense steel duct and be coated with graphite ene coatings, manage it is outer spray water evaporation, inner tube smoke by shower water evaporation endothermic into One step is cooling, and the heat power source of the circulating heat pump is the heat of untreated flue gas at gas cooler, and the circulating heat pump is logical Water is crossed to be media for heat exchange and transfer heat to flue gas heater.
Preferably, the height of the chimney is not less than the first blast furnace roof desorption tube and the second blast furnace roof desorption tube Height, and chimney is steel construction and glass reinforced plastic mixed structure form.
Compared with prior art, the beneficial effects of the utility model are as follows:
, the utility model by cyclone dust collectors, gas cooler, gas-liquid separator, graphited ethylene-steam condenser, The setting of flue gas heater, circulating heat pump and chimney, can to generated during direct emission largely containing CO, CO2 and Toxic, the combustible mixed gas of dust are sufficiently handled, solve current flue gas processing device cannot to pernicious gas into The problem of row is sufficiently handled, avoids air environmental pollution, and not wind flue gas processing device can be in line to blast furnace again for the blast furnace High-temperature flue gas in dust-laden particle recycled, and pernicious gas is subjected to hydration process, so that the flue gas of discharge reaches state Family's discharge standard, is worthy to be popularized.
, the utility model by setting cyclone dust collectors and cyclone dust collectors inner wall be equipped with wear-resistant liner, be to keep away Exempt from containing a large amount of particulate matter flue dust by pipeline to ground, so that the abrasion of pipeline is caused, by the way that chimney is arranged Height be not less than the first blast furnace roof desorption tube and the second blast furnace roof desorption tube height, can guarantee certain negative pressure Amount, by the setting of particulate matter unloading valve, its effect is particulate matter after collecting to cyclone dust collectors and dust to high furnace charge It is discharged in tank, to avoid the pollution to environment and the waste of the energy, by the setting of gas cooler, its cooling can Further flue gas is dusted and pernicious gas is subjected to hydration process, passes through the setting of gas-liquid separator, its effect It is that the flue gas after dedusting is pipelined to ground, due to the conveying of long range, former high-temperature flue gas is cooled down, cigarette It is temperature-fall period when being conveyed in pipeline containing the saturated flue gas for detaching moisture in gas, a part of condensable gas group branch shape It is flowed at droplet with gas, meanwhile, flue gas water increases after gas cooler, after gas-liquid separator, gas The effect of liquid/gas separator is exactly the gas for handling this two parts and containing a small amount of lime set, realizes lime set recycling and by a part of gas phase Purification, by the setting of graphited ethylene-steam condenser, its main function is while further decreasing flue-gas temperature, to subtract Water droplet quantity entrained by few flue gas, can substantially slough 80%~90% flue gas, pass through the setting of flue gas heater, flue gas warp After crossing heating, unsaturated higher temperatures flue gas is formed, is not easy to form plume and hangover at throat after chimney discharge.
Detailed description of the invention
Fig. 1 be the utility model Europe gallop furnace roof diffuse technical module figure;
Fig. 2 be the utility model Europe gallop furnace roof diffuse process flow chart;
Fig. 3 is the structural front view of the utility model cyclone dust collectors;
Fig. 4 is the structure top view of the utility model cyclone dust collectors.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-3, a kind of blast furnace stops wind flue gas processing device again, including blast furnace roof, the first blast furnace roof are put Separate tube and the second blast furnace roof desorption tube, blast furnace roof have been respectively communicated with the first blast furnace roof desorption tube and by furnace roof spherical tank Two blast furnace roof desorption tubes, the first blast furnace roof desorption tube and the second blast furnace roof desorption tube pass through release cross over pipe and are communicated with General pipeline is diffused, the tube wall surface for diffusing general pipeline is equipped with release main valve, and release general pipeline is communicated with far from one end of release cross over pipe Cyclone dust collectors, the inner walls of cyclone dust collectors are equipped with wear-resistant liner, and the shape of cyclone dust collectors is circle, diameter from 0.9 meter to 2.5 meters are differed, and cyclone dust collectors are made of different modules, are divided into: shell, exhaust inner tube, it is resistance to that inner walls are equipped with microlite Grind layer, the length for being vented inner tube is 0.9 meter~1.5 meters, have and be made with a thickness of 12mm manganese steel plate, microlite with a thickness of 16mm, It is pasted using dedicated special clay, the dust-contained airflow inside cyclone dust collectors rotates, by means of centrifugal force by grit Wall is separated and be trapped in from air-flow, then so that grit is fallen into ash bucket by gravity, passes through setting cyclone dust collectors and rotation The inner wall of wind deduster is equipped with wear-resistant liner, be in order to avoid containing a large amount of particulate matter flue dust by pipeline to ground, To cause the abrasion of pipeline, cyclone dust collectors are communicated with blast furnace bucket by pipeline, between cyclone dust collectors and blast furnace bucket Pipe installing have particulate matter unloading valve, by the setting of particulate matter unloading valve, its effect be to cyclone dust collectors collect after Particulate matter and dust discharged into blast furnace bucket, to avoid the pollution to environment and the waste of the energy, cyclone dust removal The exhaust pipe of device is communicated with gas cooler by pipeline, and gas cooler uses the water direct cooling mode of shell and tube, flue gas The liquid conduct flowed in cooler tube is tube side, its conduct of the liquid flowed outside pipe is shell side, and the wall surface of tube bank is to pass Hot face, achieve the effect that it is cooling, cooling capacity be 600 cubes/min~3500 cube/min, pass through setting for gas cooler It sets, its cooling can further be dusted flue gas and pernicious gas is carried out hydration process, the exhaust of gas cooler Pipe is communicated with gas-liquid separator by pipeline, and the outlet of gas-liquid separator is communicated with graphited ethylene-steam condenser by pipeline, The separation method of gas-liquid separator is ultra-filtration and separation, and the different gas-liquid mixture of particle is sieved by millipore filter, liquid For body because gravity downstream to separator bottom and is discharged, gas enters graphited ethylene-steam condenser, passes through setting for gas-liquid separator It sets, its effect is that the flue gas after dedusting is pipelined to ground, due to the conveying of long range, former high-temperature flue gas Cooled down, is temperature-fall period when being conveyed in pipeline containing the saturated flue gas for detaching moisture in flue gas, a part of condensated gas Body component will form droplet and flow with gas, meanwhile, flue gas water increases after gas cooler, passes through gas-liquid point After device, the effect of gas-liquid separator is exactly the gas for handling this two parts and containing a small amount of lime set, and realization lime set recycles and will A part of gas phase purifying, graphited ethylene-steam condenser gas outlet are communicated with flue gas heater by pipeline, pass through graphite second The setting of alkene-steam condenser, its main function are to reduce water entrained by flue gas while further decreasing flue-gas temperature Quantity is dripped, 80%~90% flue gas can be substantially sloughed, by the setting of flue gas heater, flue gas is formed not after heating It is saturated higher temperatures flue gas, is not easy to form plume and hangover, flue gas heater and flue gas at throat after chimney discharge Circulating heat pump is communicated with by pipeline between cooler, is equipped in graphited ethylene-steam condenser association system all parts The condensation steel pipe of a large amount of DN20, and condense steel duct and be coated with graphite ene coatings, outer spray water evaporation is managed, inner tube smoke is by spray Water drenching evaporation endothermic further cools down, and the heat power source of circulating heat pump is the heat of untreated flue gas at gas cooler, circulation Heat pump is media for heat exchange by water and transfers heat to flue gas heater, and flue gas heater gas outlet is communicated with row by pipeline Cigarette chimney, the height of chimney is not less than the height of the first blast furnace roof desorption tube and the second blast furnace roof desorption tube, and arranges Cigarette chimney is steel construction and glass reinforced plastic mixed structure form, and the height by the way that chimney is arranged is put not less than the first blast furnace roof The height of separate tube and the second blast furnace roof desorption tube can guarantee certain negative pressure amount, cooling by cyclone dust collectors, flue gas The setting of device, gas-liquid separator, graphited ethylene-steam condenser, flue gas heater, circulating heat pump and chimney, can to Toxic, combustible mixed gas largely containing CO, CO2 and dust are generated during direct emission sufficiently to be handled, and are solved The problem of current flue gas processing device cannot sufficiently be handled pernicious gas, avoids air environmental pollution, the height Furnace stop again wind with flue gas processing device can be in line to blast furnace high-temperature flue gas in dust-laden particle recycle, and by pernicious gas Hydration process is carried out, so that the flue gas of discharge reaches national emission standard, is worthy to be popularized.
In use, flue gas and particulate matter that blast furnace roof generates pass through the first blast furnace roof desorption tube, the second blast furnace respectively Furnace roof desorption tube, release cross over pipe and release general pipeline enter the inside of cyclone dust collectors, the ash-laden gas inside cyclone dust collectors Stream rotates, and grit is separated to from air-flow by means of centrifugal force and is trapped in wall, then make grit by gravity Ash bucket is fallen into, by opening particulate matter unloading valve, so that the particulate matter and dust after cyclone dust collectors collection enter blast furnace bucket Internal discharge, remaining flue gas enters the inside of gas cooler, and gas cooler makes cigarette by the heat transfer effect of liquid The decline of temperature degree, while flue gas is dusted and pernicious gas is subjected to aquation, enter the inside of gas-liquid separator later, By long-distance transportation through pipeline to ground, former high-temperature flue gas is cooled down flue gas after dedusting, and gas-liquid separator is to containing a small amount of The gas of lime set realizes lime set recycling or gas phase purifying, and flue gas enters the pipeline inside graphited ethylene-steam condenser later, Water evaporation is sprayed outside pipeline, flue gas is further cooled down by the amount of heat that spray water evaporation absorbs in pipeline, can reduce smoke temperature To 35 DEG C -38 DEG C, the liquid water in flue gas is largely removed at this time, cold in flue gas remaining as the saturation wet flue gas after preliminary cooling But heat source of the untreated flue gas as circulating heat pump at device, circulating heat pump are media for heat exchange by water and transfer heat to Flue gas heater, while constant pressure supply water is needed to pay attention to, the heat medium water that flue gas heater is transmitted by circulating heat pump is to graphited ethylene- The incoming flue gas of steam condenser is heated, and flue gas forms unsaturated higher temperatures cigarette after the heating by flue gas heater Gas is not easy to form plume and hangover at throat from the flue gas after chimney discharge, 85 DEG C of smoke temperature of chimney outlet, Humidity is 3%-6%.
In summary: the blast furnace stop again wind flue gas processing device, by blast furnace roof, the first blast furnace roof desorption tube, Second blast furnace roof desorption tube, release cross over pipe, release general pipeline, release main valve, cyclone dust collectors, blast furnace bucket, particulate matter unload Grey valve, gas cooler, gas-liquid separator, graphited ethylene-steam condenser, flue gas heater, circulating heat pump and chimney Be used cooperatively, solve the problems, such as that current flue gas processing device cannot sufficiently be handled pernicious gas.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of blast furnace stops wind flue gas processing device, including coal gas diffusion at top of blast furnace pipe and diffusion valve again, it is characterised in that: The blast furnace roof passes through coal gas diffusion pipe and diffusion valve by furnace roof spherical tank or coal gas tedge for original, to coal in State of Blast Furnace Gas carries out direct emission, and is changed to and is retaining rough gas desorption tube and while diffusion valve, increases and coal gas diffusion pipe and puts The parallel release cross over pipe of valve is dissipated, is referred to as this release communicating pipe to diffuse general pipeline, the tube wall surface of the release general pipeline is equipped with Main valve is diffused, the release general pipeline is communicated with cyclone dust collectors far from one end of release cross over pipe, and the cyclone dust collectors pass through Pipeline is communicated with blast furnace bucket, and the Pipe installing between the cyclone dust collectors and blast furnace bucket has particulate matter unloading valve;
The exhaust pipe of the cyclone dust collectors is communicated with gas cooler by pipeline, and the exhaust pipe of the gas cooler passes through Pipeline is communicated with gas-liquid separator, and the outlet of the gas-liquid separator is communicated with graphited ethylene-steam condenser, institute by pipeline It states graphited ethylene-steam condenser gas outlet and flue gas heater is communicated with by pipeline, the flue gas heater and flue gas are cold But circulating heat pump is communicated with by pipeline between device, the flue gas heater gas outlet is communicated with chimney by pipeline.
2. a kind of blast furnace according to claim 1 stops wind flue gas processing device again, it is characterised in that: the cyclone dust removal The inner wall of device is equipped with wear-resistant liner, and the gas cooler uses the water direct cooling mode of shell and tube, cooling capacity 600 Cube/min~3500 cube/min.
3. a kind of blast furnace according to claim 1 stops wind flue gas processing device again, it is characterised in that: the gas-liquid separation The separation method of device is ultra-filtration and separation, and the different gas-liquid mixture of particle is sieved by millipore filter, and liquid is because of gravity It downstream to separator bottom and is discharged, gas enters graphited ethylene-steam condenser.
4. a kind of blast furnace according to claim 1 stops wind flue gas processing device again, it is characterised in that: the chimney Height be not less than the first blast furnace roof desorption tube and the second blast furnace roof desorption tube height, and chimney be steel construction with Glass reinforced plastic mixed structure form.
CN201822209583.5U 2018-12-27 2018-12-27 A kind of blast furnace stops wind flue gas processing device again Expired - Fee Related CN209602579U (en)

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CN201822209583.5U CN209602579U (en) 2018-12-27 2018-12-27 A kind of blast furnace stops wind flue gas processing device again

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Application Number Priority Date Filing Date Title
CN201822209583.5U CN209602579U (en) 2018-12-27 2018-12-27 A kind of blast furnace stops wind flue gas processing device again

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111850200A (en) * 2020-07-29 2020-10-30 中冶华天南京工程技术有限公司 Environment-friendly blowing-down method for blast furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111850200A (en) * 2020-07-29 2020-10-30 中冶华天南京工程技术有限公司 Environment-friendly blowing-down method for blast furnace

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Granted publication date: 20191108

Termination date: 20211227