CN101928608B - Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method - Google Patents
Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method Download PDFInfo
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- CN101928608B CN101928608B CN201010264346.4A CN201010264346A CN101928608B CN 101928608 B CN101928608 B CN 101928608B CN 201010264346 A CN201010264346 A CN 201010264346A CN 101928608 B CN101928608 B CN 101928608B
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Abstract
The invention relates to a blast-furnace gas hydrogen chloride purifying and absorbing compound device and a method, belonging to the technical field of purifying blast-furnace gas in iron and steel plants. The device comprises an alkali liquor electromagnetic valve, an alkali liquor blind plate valve, an alkali liquor gate valve, an alkali liquor conveying and distributing pipeline, an alkali liquor nozzle, an industrial water electromagnetic valve, an industrial water blind plate valve, an industrial water gate valve, an industrial water conveying and distributing pipeline, an industrial water nozzle, a liquor-removal tower shell, an air current distribution plate, an air-liquor separation filler, an industrial reuse water electromagnetic valve, an industrial reuse water blind plate valve, an industrial reuse water gate valve, an industrial reuse water conveying and distributing pipeline, an industrial reuse water nozzle, a drainage pipeline and a drainage gate valve, which are sequentially connected through flanges. After unpurified blast-furnace gas sequentially is mixed with industrial water and alkali liquor in a spraying mode and the mechanical water drops are intercepted by a liquor-removal tower, the clean blast-furnace gas is conveyed to users, and the discharged water is conveyed to low-side uses through pipelines (19) and gate valves (20). The invention has the advantage of solving the problem that the blast-furnace gas dry type dedusting process can not prevent the hydrogen chloride component from corroding gas conduits and devices.
Description
Technical field
The invention belongs to Blast Furnace Gas of Iron & Steel Plants purification techniques field, a kind of blast-furnace gas hydrogen chloride purifying and absorbing compound device and method particularly are provided, be applicable to blast furnace gas and adopt containing hydrogen chloride in bag-type dusting technique coal gas to purify absorption system.
Background technology
Iron And Steel Industry is pillars of the national economy type industry, is also the energy consumption rich and influential family, therefore in Steel Plant, saves energy and reduce the cost strategic importance is arranged.Steel Plant's blast furnace is when producing qualified molten iron, produced the waste gas that contains the CO inflammable gas, this part waste gas after treatment, can use as Steel Plant's process furnace, be good secondary energy, and Purify Process of Blast Furnace mainly contains two kinds of modes, the first adopts water to clean, the industrial wet type that is called, another kind is bag filter process, the industrial dry type that is called.Wet dust removal technique can not only reduce the dust in waste gas, can also remove the obnoxious flavour composition hydrogenchloride in coal gas, but its water loss is large, and the secondary pollution shortcomings such as sludge treatment are arranged again, has been no longer the dominant direction of technological development at present.Bag filter process can purify dust granules in coal gas, and power consumption is low, there is no again secondary pollution, it is the leading Technology direction with growth momentum, be subject to promotion and application, but because filtration method can not effectively be removed the hydrogenchloride obnoxious flavour composition in coal gas, thereby make coal gas after purification in application due to temperature variation, hydrogenchloride is met water and is become acidic solution atmosphere, corrode its transmission and distribution pipeline, equipment, blast furnace gas occurring from the ejection of corrosion failure point, affect operator's safety, must pay much attention to when serious.For this reason, the hydrogenchloride removing that some forms are different occurred, taked to be coated with the measures such as protective system, external insulation, raising gas line material as the blast furnace gas pipeline inwall, obtained the effect of some, but do not tackled the problem at its root.
Summary of the invention
The object of the present invention is to provide a kind of blast-furnace gas hydrogen chloride purifying and absorbing compound device and method, solved blast furnace gas dry dusting technique and can't solve the problem that the containing hydrogen chloride component is corroded gas line, equipment.Realized that the hydrogen chloride gas component efficiently removes from blast furnace gas, and then realized the accessible popularization of blast furnace gas dry dust removal technology.
The inventive system comprises: alkali lye magnetic valve, alkali lye blank-plate valve, alkali lye gate valve, alkali lye transmission and distribution pipeline, alkali lye nozzle, service water magnetic valve, service water blank-plate valve, service water gate valve, service water transmission and distribution pipeline, service water nozzle, liquid taking-off tower housing, airflow-distribution board, gas-liquid separating filler, industrial reuse water solenoid valve, industrial reuse water blank-plate valve, industrial reuse Water gate valve, industrial reuse water transmission and distribution pipeline, industrial reuse sprinkler head, drainage pipeline, drainage valve, above each assembly adopts flange to connect successively.The blast furnace gas purified successively through mixed with the service water spray, after the alkali lye spray is mixed, liquid taking-off tower holds back mechanical water droplet, clean blast furnace gas is sent to the user, the water of discharge is delivered to low end subscriber through piping, gate valve.
Spray alkali mouth mouth, spray service water shower nozzle, industrial reuse sprinkler head all adopt double-current atomizing nozzle.
At first air-flow contacts with the service water nozzle, and then contacts with the alkali lye nozzle.
Principal character of the present invention has two parts, and a part is comprised of purification assembly, realizes purifying absorptive function in blast furnace gas pipeline, and another part forms by removing the alkali lye assembly, realizes residue alkali lye remove; Two partial synthesis are the composite type purifying absorption unit.The carrier of purification assembly is alkali lye, can improve its purification efficiency, the blast furnace gas that contains the hydrogen chloride gas component collides and reduces gas temperature and complete the desired preprocessing tasks of absorption technique through the service water of service water shower nozzle ejection successively through pipeline guiding, then carry out comprehensive seamlessly fully mix with the alkali lye of alkali lye shower nozzle ejection flowing forward, spraying at short notice the combination of hydrogen chloride gas in alkali and coal gas carries out mass transfer it is transferred in the middle of liquid phase, in blast furnace gas, the hydrogen chloride gas component overwhelming majority is removed clean, contain certain alkali lye through the gas purified, be incorporated into the liquid taking-off tower bottom by pipeline and pass through successively airflow-distribution board, the filler entered in housing after adjustments of gas is even carries out gas-liquid separation, making it blast furnace gas removes it and carries unnecessary alkali lye and drip, finally by liquid taking-off tower top, derive and enter transmission & distribution blast furnace gas processing pipe network.
Alkali lye enters in gas line via magnetic valve, blank-plate valve, gate valve, transmission & distribution pipeline, nozzle, the pipe fitting connecting mode of above each valve is flange connect, service water enters in blast furnace gas pipeline via magnetic valve, blank-plate valve, gate valve, transmission & distribution pipeline shower nozzle, and above each valve pipe fitting adopts flange connect.Airflow-distribution board is comprised of angle steel, and the installation of lower button, and service water nozzle, alkali lye nozzle, industrial reuse sprinkler head adopt double fluid atomization nozzle, and gas-liquid separator is comprised of the aluminium alloy packing ring.
Method of the present invention is: the blast furnace gas that contains the hydrogenchloride component is before pipeline is transported to the purification absorption unit, in pipeline, through the fine droplets with the ejection of service water nozzle, contact successively, after carry out fully mixing with alkali lye nozzle ejection fogged lye out again and reach the purpose that purify to absorb harmful gas ingredients, the blast furnace gas that contains drop enters into the liquid taking-off tower bottom, through airflow-distribution board, airflow-distribution board is uniformly distributed blast furnace gas in its tower, in tower, flow rate control is at 1.8～2.5m/s, uniform blast furnace gas is water droplet in making it to remove blast furnace gas through filler, finally with industrial reuse water, clean blast furnace gas and remove the residual alkali lye of filler, make in blast furnace gas pipeline network that blast furnace gas is qualified gas fed downstream, the discharge water removed through washing is carried low end subscriber through piping, valve.
The effective effects device of the present invention can absorb the hydrogenchloride obnoxious flavour composition in blast furnace gas efficiently, fundamentally solve downstream transmission & distribution user's corrosion phenomenon, guarantee user's fuel mass and operator's safety, reduce the pollution of blast furnace gas combustion post chlorization thing flue gas to environment, there is good economic benefit and environmental benefit.
The accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation, wherein, alkali lye magnetic valve 1, alkali lye blank-plate valve 2, alkali lye gate valve 3, alkali lye transmission and distribution pipeline 4, alkali lye nozzle 5, service water magnetic valve 6, service water blank-plate valve 7, service water gate valve 8, service water transmission and distribution pipeline 9, service water nozzle 10, liquid taking-off tower housing 11, airflow-distribution board 12, gas-liquid separating filler 13, industrial reuse water solenoid valve 14, industrial reuse water blank-plate valve 15, industrial reuse Water gate valve 16, industrial reuse water transmission and distribution pipeline 17, industrial reuse sprinkler head 18, drainage pipeline 19, drainage valve 20.
Embodiment
The inventive system comprises alkali lye magnetic valve 1, alkali lye blank-plate valve 2, alkali lye gate valve 3, alkali lye transmission and distribution pipeline 4, alkali lye nozzle 5, service water magnetic valve 6, service water blank-plate valve 7, service water gate valve 8, service water transmission and distribution pipeline 9, service water nozzle 10, liquid taking-off tower housing 11, airflow-distribution board 12, gas-liquid separating filler 13, industrial reuse water solenoid valve 14, industrial reuse water blank-plate valve 15, industrial reuse Water gate valve 16, industrial reuse water transmission and distribution pipeline 17, industrial reuse sprinkler head 18, drainage pipeline 19, drainage valve 20, above each assembly adopts flange to connect successively; The blast furnace gas purified successively through mixed with the service water spray, after the alkali lye spray is mixed, liquid taking-off tower holds back mechanical water droplet, clean blast furnace gas is sent to the user, the water of discharge is delivered to low end subscriber through piping 19, gate valve 20.
By figure, found out, the blast furnace gas that contains the hydrogenchloride component is before pipeline is transported to the purification absorption unit, in pipeline, through the fine droplets with 1 ejection of service water nozzle, contact successively, after the fogged lye that ejects with alkali lye nozzle 5 again carry out fully mixing reaching and purify the purpose that absorbs harmful gas ingredients, the blast furnace gas that contains drop enters into liquid taking-off tower 11 bottoms, through airflow-distribution board 12, airflow-distribution board 12 is uniformly distributed blast furnace gas in its tower, in tower, the flow velocity general control is at 1.8～2.5m/s, uniform blast furnace gas is water droplet in making it to remove blast furnace gas through filler 13, finally by crossing the dual function of finally cleaning the blast furnace gas alkali lye residual with removing filler with industrial reuse water, in the blast furnace gas pipeline network that blast furnace gas is qualified gas fed downstream.The draining removed through washing is carried low end subscriber through piping 19, valve 20.
Claims (3)
1. a blast-furnace gas hydrogen chloride purifying and absorbing compound device, it is characterized in that, comprise alkali lye magnetic valve (1), alkali lye blank-plate valve (2), alkali lye gate valve (3), alkali lye transmission and distribution pipeline (4), alkali lye nozzle (5), service water magnetic valve (6), service water blank-plate valve (7), service water gate valve (8), service water transmission and distribution pipeline (9), service water nozzle (10), liquid taking-off tower housing (11), airflow-distribution board (12), gas-liquid separating filler (13), industrial reuse water solenoid valve (14), industrial reuse water blank-plate valve (15), industrial reuse Water gate valve (16), industrial reuse water transmission and distribution pipeline (17), industrial reuse sprinkler head (18), drainage pipeline (19), drainage valve (20),
Alkali lye magnetic valve (1), alkali lye blank-plate valve (2), alkali lye gate valve (3), alkali lye transmission and distribution pipeline (4), alkali lye nozzle (5) adopts flange to connect successively, service water magnetic valve (6), service water blank-plate valve (7), service water gate valve (8), service water transmission and distribution pipeline (9), service water nozzle (10) adopts flange to connect successively, industrial reuse water solenoid valve (14), industrial reuse water blank-plate valve (15), industrial reuse Water gate valve (16), industrial reuse water transmission and distribution pipeline (17), industrial reuse sprinkler head (18) adopts flange to connect successively, drainage pipeline (19) adopts flange to be connected with drainage valve (20), drainage pipeline (19) is connected with liquid taking-off tower housing (11), airflow-distribution board (12) is connected with liquid taking-off tower housing (11), gas-liquid separating filler (13) is connected with liquid taking-off tower housing (11),
The blast furnace gas that contains the hydrogenchloride component is before pipeline is transported to the purification absorption unit, pass through successively in pipeline with the fine droplets of service water nozzle (10) ejection and contact, after the fogged lye that ejects with alkali lye nozzle (5) again carry out fully mixing reaching and purify the purpose that absorbs harmful gas ingredients, the blast furnace gas that contains drop enters into liquid taking-off tower housing (11) bottom, through airflow-distribution board (12), airflow-distribution board (12) is uniformly distributed blast furnace gas in its tower, in tower, flow rate control is at 1.8～2.5m/s, uniform blast furnace gas is water droplet in making it to remove blast furnace gas through gas-liquid separating filler (13), finally with industrial reuse water, clean blast furnace gas and remove the residual alkali lye of filler, make in blast furnace gas pipeline network that blast furnace gas is qualified gas fed downstream, the discharge water removed through washing is carried low end subscriber through drainage pipeline (19), drainage valve (20).
2. install as claimed in claim 1, it is characterized in that, alkali lye nozzle (5), service water nozzle (10), industrial reuse sprinkler head (18) all adopt double-current atomizing nozzle.
3. install as claimed in claim 1, it is characterized in that, at first air-flow contacts with service water nozzle (10), and then contacts with alkali lye nozzle (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010264346.4A CN101928608B (en) | 2010-08-26 | 2010-08-26 | Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method |
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| CN201010264346.4A CN101928608B (en) | 2010-08-26 | 2010-08-26 | Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method |
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| CN101928608B true CN101928608B (en) | 2014-01-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424763A (en) * | 2011-08-29 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Blast furnace gas washing and deacidification equipment and method |
| CN103993111B (en) * | 2014-05-19 | 2016-04-27 | 首钢总公司 | A kind of device and method of blast furnace gas dry dehydrochlorination |
| CN104569092B (en) * | 2015-01-22 | 2018-03-06 | 首钢总公司 | A kind of method and its device for being used to detect blast furnace gas chlorinty |
| CN109112241B (en) * | 2018-10-30 | 2023-09-19 | 中冶京诚工程技术有限公司 | Blast furnace top pressure equalizing gas recovery equipment |
| CN109136432B (en) * | 2018-10-30 | 2020-08-28 | 中冶京诚工程技术有限公司 | Method for recovering pressure-equalizing coal gas at top of blast furnace |
| CN109136438A (en) * | 2018-10-30 | 2019-01-04 | 中冶京诚工程技术有限公司 | Comprehensive treatment and recovery method for blast furnace gas |
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| US4719088A (en) * | 1985-02-12 | 1988-01-12 | Mitsubish Denki Kabushiki Kaisha | Apparatus for removing at least one acidic component from a gas |
| CN2427526Y (en) * | 2000-03-21 | 2001-04-25 | 鞍山市四新科技工贸公司 | Novel and high efficiency water removing device for blast furnace gas |
| CN1361711A (en) * | 1999-07-19 | 2002-07-31 | 株式会社荏原制作所 | Apparatus and method for cleaning acidic gas |
| CN201046956Y (en) * | 2007-04-23 | 2008-04-16 | 济南海鹰机电制造有限公司 | Blast furnace gas mist catching separator |
| CN101603107A (en) * | 2009-07-14 | 2009-12-16 | 河北省首钢迁安钢铁有限责任公司 | Remove the system and the technology thereof of corrosive deposit in the iron-smelting blast furnace dry method dust coal gas |
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2010
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4719088A (en) * | 1985-02-12 | 1988-01-12 | Mitsubish Denki Kabushiki Kaisha | Apparatus for removing at least one acidic component from a gas |
| CN1361711A (en) * | 1999-07-19 | 2002-07-31 | 株式会社荏原制作所 | Apparatus and method for cleaning acidic gas |
| CN2427526Y (en) * | 2000-03-21 | 2001-04-25 | 鞍山市四新科技工贸公司 | Novel and high efficiency water removing device for blast furnace gas |
| CN201046956Y (en) * | 2007-04-23 | 2008-04-16 | 济南海鹰机电制造有限公司 | Blast furnace gas mist catching separator |
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