CN1062379A - Apparatus for enforced recovery of gas exhausted from top of blast furnace - Google Patents
Apparatus for enforced recovery of gas exhausted from top of blast furnace Download PDFInfo
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- CN1062379A CN1062379A CN 90106036 CN90106036A CN1062379A CN 1062379 A CN1062379 A CN 1062379A CN 90106036 CN90106036 CN 90106036 CN 90106036 A CN90106036 A CN 90106036A CN 1062379 A CN1062379 A CN 1062379A
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Abstract
Apparatus of the present invention are the pressure retrieving arrangements about ironmaking system blast furnace furnace roof pressure-discharging gas.Existing retrieving arrangement can not reclaim as early as possible, and effectively dedusting and minimizing are to the compression shock of purified gas pipe network.The retrieving arrangement (being the step-down tower) be made up of injector, venturi scrubber and water trap is proposed for this reason.This device characteristic is at Venturi meter aditus laryngis place inner chamber medium nozzle and water-jet to be installed, and is the injection medium with the low-pressure steam.Solved quick recovery, the purifying and dedusting of pressure-discharging gas and reduced impact the purified gas pipe network.It is simple in structure, and volume is little, easy to maintenance, reliable operation.
Description
Apparatus of the present invention belong to the ironmaking system apparatus for enforced recovery of gas exhausted from top of blast furnace.
At Japan's " industry heating " (V.L18 №.16 P11-14) announced a kind of " top gas recovery system " in.Its purpose is to make the injection medium with blast furnace half purified gas, by injector the furnace roof pressure-discharging gas is recovered in the purified gas pipe network.This device reclaims gas line by the furnace roof tornado dust collector, and valve and injector are formed.This device has following deficiency: 1. because blast furnace half purified gas and furnace roof pressure-discharging gas pressure difference are little, can not reclaim whole coal gas within a short period of time; 2. to make moment enter the coal of purified gas pipe network large-minded and pressure is higher that the purified gas pipe network is caused bigger compression shock because no Venturi meter reduces pressure, and causes bigger pressure pulsation; 3. the pressure-discharging gas dustiness is big, does not all carry out dedusting preferably with half purified gas, has increased the ash load of purified gas, and is unfavorable to hotblast stove, coke oven regenerator life-span.
Apparatus of the present invention are to avoid above-mentioned the deficiencies in the prior art part and propose a kind of have injection, pressure buffer, and the pressure-discharging gas recovering device of dedusting and dehydration is so that reclaim pressure-discharging gas and better dedusting, save energy, decontamination as early as possible.
Apparatus of the present invention can reach by following measure: at the furnace roof tornado dust collector to the coal-gas recovering pipeline between the purified gas pipe network, remove former single injector, replace by injector venturi scrubber, the pressure retrieving arrangement-step-down tower of water trap three organic composition.In Venturi meter aditus laryngis front portion injection medium nozzle is set, constitutes the injector structure, water-jet is set at Venturi meter aditus laryngis place constitutes the venturi scrubber structure; Venturi meter inserts again in the bigger container and makes it to constitute water trap, and whole device is a sealed construction.The outer container of water trap is cylindrical, and upper and lower ends is taper shape, and Venturi meter is inserted by the center of top cone, and the bottom of bottom cone is provided with soot cleaning valve, and the grey water slurry of separating out from medium is discharged from here, and whole device is supported by several pillars.Reclaim coal gas and injection medium all from Venturi meter enter water trap and from it the cone sidepiece come out to enter the purified gas pipe network.The injection medium is low-pressure steam or adopts half purified gas.Can also in container, spray water by water trap top cone, to increase dust removing effects.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the system diagram of apparatus of the present invention-apparatus for enforced recovery of gas exhausted from top of blast furnace.
Fig. 2 is apparatus of the present invention-Venturi meter induction apparatus structure iron.
Embodiment is described in further detail apparatus of the present invention below in conjunction with accompanying drawing:
Fig. 1: pressure-discharging gas from top charging equipment 1 through purge valve 2, tornado dust collector 3, recovery valve 12, recovery channel 13 enter this device-step-down tower.This step-down tower is by Venturi meter 7, and injection medium nozzle 9, water-jet 8, tower shell 6, deashing slurry valve 18 and pillar 19 are formed.The injection medium is through injection valve 10, injection medium pipeline 11, by 9 ejections of injection medium nozzle.The dedusting bath water is through water valve 14, and water for cleaning pipe 15 is sprayed to Venturi meter aditus laryngis place by water-jet 8.After pressure-discharging gas enters the step-down tower, enter purified gas pipe network 17 through vent pipe 16.When loading device need all be pressed, all press coal gas through pressure-equalizing passageway 5, equalizing valve 4, tornado dust collector 3 enter loading device 1.When all pressing, all press coal gas that the dust blowback that deposits in the tornado dust collector is gone in the loading device, whole all pressures and pressure-discharging gas system and equipment are sealed construction.Step-down tower shell 6 is a right cylinder, upper and lower ends band cone structure formula sealed vessel.
Fig. 2 is the structure diagram of Venturi meter injector.7 is Venturi meter, and 8 is water-jet, and 9 is injection medium nozzle, and 10 is the injection valve, and 11 is the injection medium pipeline, and 13 is the pressure-discharging gas recovery tube, and 14 is water valve, and 15 is water pipe.Water-jet 8 is arranged at the aditus laryngis place of Venturi meter 7, and injection medium nozzle 9 is arranged at the front end of Venturi meter aditus laryngis.
In this step-down tower apparatus, injection medium nozzle 9 is arranged at Venturi meter 7 aditus laryngis front ends, constitutes the injector structure; Venturi meter 7 aditus laryngis places are provided with water-jet 8 makes it to constitute the venturi scrubber structure; Venturi meter 7 inserts step-down tower shell 6, makes it to constitute evaporator structure.
The working process of this device of brief description.Because of top charging equipment 1 is periodically to carry out material feeding, all pressure, discharge, row pressure work, therefore, this device is also periodically worked.During row pressure, the pressure in the top charging equipment 1 is about 0.25MPa, and the pressure in the purified gas pipe network 17 is～0.01MPa.Pressure-discharging gas enters tornado dust collector 3 through purge valve 2 and carries out thick dedusting, and again through recovery valve 12, recovery channel 13 enters the step-down tower apparatus, after step-down tower delivery line 16 enters purified gas pipe network 17.At the row pressure initial stage, batch can pressure is higher, and is bigger with the pressure reduction of purified gas pipe network, and pressure-discharging gas can be discharged with higher speed.At this moment, still have higher pressure and speed during the aditus laryngis of pressure-discharging gas process Venturi meter 7, therefore, spray water to Venturi meter 7 aditus laryngis places by water-jet 8 through water valve 14 and water pipe 15, decrease with the resistance that increases the aditus laryngis place, consume portion of energy, thereby reduce compression shock the purified gas pipe network.Simultaneously, the water of ejection produces turbulent flow with coal gas, and moistening dust is grown up its accumulation, thus after entering water trap because air flow divert, by inertia and gravity it is removed from air-flow, reach dust separating purpose.When the pressure of loading device 1 is reduced to 0.06～0.08MPa fast, reduce with purified gas pipe network pressure reduction, its pressure underspeeds and can reduce greatly.At this moment, for shortening the coal-gas recovering time, open injection valve 10, the injection medium is sprayed to Venturi meter 7 by nozzle 9 through pipeline 11, and injection coal gas impels the pressure in the loading device to reduce fast.Pressure was 0.3～1MPa when the injection medium adopted steam, and pressure is higher, and the beginning injection time during comparable coal gas injection, the injection effect was better in advance.After the high pressure steam ejection, pressure is sharply reduced to very low, causes bigger temperature to fall, and makes the steam cold junction after the ejection become water smoke, produces turbulent flow with the coal gas of injection, and the dust in the coal gas is had wetting action preferably, can play dust removing effects preferably.Vapor condenses Cheng Shuihou is discharged in coal gas in water trap, and the volume of unlikely increase coal gas has alleviated the impact to purified gas pipe network 17.Because steam ejection has had dust removing effects simultaneously, at this moment can turn off water valve 14 for save energy, but when adopting half purified gas injection, water valve 14 must be opened still, to guarantee dust separating continuation.In the water trap, for increasing its dust removing effects, also can continue the water spray washing on housing top, water in the water trap and mortar are discharged from soot cleaning valve 18.Water trap is a bigger container, after pressure-discharging gas enters, can fully expand, and gas flow rate slows down, and pressure reduces, and can reduce the impact to the purified gas pipe network greatly, and the whole recovery time was 20～30 seconds, and the time can be played shock absorption preferably than weak point.
Reduce to 0.01MPa when following when the pressure in the loading device 1, close injection valve 10, water valve 14, recovery valve 12, purge valve 2, the loading device row pressure finishes.Loading device 1 is feeded then, all presses, and all presses coal gas by equaler 5, through equalizing valve 4, fly-ash separator 3 the dust blowback is returned in the loading device 1.Carry out discharge after all pressing end, carry out row pressure then again, work periodically.
Apparatus of the present invention have the following advantages than prior art:
1. employing injector, venturi scrubber and dehydrator organically combine, and the structure that forms a whole has preferably dust removing effects, can make the gas recovery dustiness drop to 100mg/Nm3Below, the ash that has alleviated purified gas is loaded the unlikely chamber of hot-blast stove that has influence on, coke oven regenerator life-span.
2. water trap has bigger cavity, and being condensed into water after the ejection of the steam of injection separates out from air-flow, gas pressure is reduced, fully expanded, flow velocity slows down, the coal gas amount does not have unexpected bigger increase, has reduced the impact to the purified gas pipe network greatly, helps users' such as hot blast stove burning operation.
3. this apparatus structure compactness, simple, little, easy to maintenance, the reliable operation of volume.
Claims (4)
1, a kind of tornado dust collector 3 that comprise, pressure-discharging gas recovery valve 12, recovery channel 13 injection valves 10, the apparatus for enforced recovery of gas exhausted from top of blast furnace of injection medium nozzle 9 and purified gas pipe network 17, it is characterized in that, setting has the injector structure, venturi scrubber structure, the step-down tower apparatus of evaporator structure and soot cleaning valve 18.
2, force retrieving arrangement by the described coal gas of claim 1, it is characterized in that injection medium nozzle 9 is arranged at the aditus laryngis front portion of Venturi meter 7, constitute the injector structure; Venturi meter 7 aditus laryngis places are provided with water-jet 8, constitute the venturi scrubber structure, and Venturi meter 7 inserts in the tower shell 6 and constitutes evaporator structure; The three organically is combined into an integral body by Venturi meter 7, and is inseparable.
3, by claim 1,2 described gas recovering devices, it is characterized in that: Venturi meter 7 inserts from the center of the top cone of step-down tower shell 6, constitutes water trap, and is whole by pillar 19 supports, the bottom cone base is provided with ash-valve 18, and housing 6 includes bigger volume.
4, by claim 1,3 described gas recovering devices, it is characterized in that the injection medium is 0.3～1MPa steam or blast furnace half purified gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106036 CN1023717C (en) | 1990-12-15 | 1990-12-15 | Apparatus for enforced recovery of gas exhausted from top of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106036 CN1023717C (en) | 1990-12-15 | 1990-12-15 | Apparatus for enforced recovery of gas exhausted from top of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062379A true CN1062379A (en) | 1992-07-01 |
| CN1023717C CN1023717C (en) | 1994-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106036 Expired - Lifetime CN1023717C (en) | 1990-12-15 | 1990-12-15 | Apparatus for enforced recovery of gas exhausted from top of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023717C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN102031321A (en) * | 2010-12-23 | 2011-04-27 | 中冶京诚工程技术有限公司 | Recovery method and recovery device for blast furnace top pressure-equalizing gas |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102337365A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Process for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102337363A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Process for recovering coal gas in equalizing and relieving process of furnace top of blast furnace in mode of squeezing air bag by roller |
| CN102864260A (en) * | 2012-09-28 | 2013-01-09 | 中冶南方工程技术有限公司 | Pressure-equalizing bleeding device for ejecting furnace-top tank gas by high pressure gas |
| CN102864257A (en) * | 2012-09-28 | 2013-01-09 | 中冶南方工程技术有限公司 | Pressure-equalizing and bleeding method for injecting furnace roof tank coal gas by using high-pressure gas |
| CN104087706A (en) * | 2014-06-24 | 2014-10-08 | 河北钢铁股份有限公司唐山分公司 | Converter dewatering apparatus capable of increasing dewatering effect of flue gas |
| CN107699648A (en) * | 2017-11-29 | 2018-02-16 | 中冶南方工程技术有限公司 | A kind of full recovery system of blast furnace top pressure-equalizing bleeding coal gas and method |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
| CN112941261A (en) * | 2019-11-26 | 2021-06-11 | 阜新达诚科技有限公司 | Blast furnace charging bucket voltage-sharing coal gas wet dedusting recovery device |
| CN114058759A (en) * | 2020-08-03 | 2022-02-18 | 阜新达诚科技有限公司 | Blast furnace charging bucket voltage-sharing coal gas dust removal recovery unit |
-
1990
- 1990-12-15 CN CN 90106036 patent/CN1023717C/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN102031321A (en) * | 2010-12-23 | 2011-04-27 | 中冶京诚工程技术有限公司 | Recovery method and recovery device for blast furnace top pressure-equalizing gas |
| CN102031321B (en) * | 2010-12-23 | 2012-09-05 | 中冶京诚工程技术有限公司 | Recovery method and recovery device for blast furnace top pressure-equalizing gas |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102337365A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Process for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102337363A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Process for recovering coal gas in equalizing and relieving process of furnace top of blast furnace in mode of squeezing air bag by roller |
| CN102864260A (en) * | 2012-09-28 | 2013-01-09 | 中冶南方工程技术有限公司 | Pressure-equalizing bleeding device for ejecting furnace-top tank gas by high pressure gas |
| CN102864257A (en) * | 2012-09-28 | 2013-01-09 | 中冶南方工程技术有限公司 | Pressure-equalizing and bleeding method for injecting furnace roof tank coal gas by using high-pressure gas |
| CN104087706A (en) * | 2014-06-24 | 2014-10-08 | 河北钢铁股份有限公司唐山分公司 | Converter dewatering apparatus capable of increasing dewatering effect of flue gas |
| CN104087706B (en) * | 2014-06-24 | 2015-12-23 | 河北钢铁股份有限公司唐山分公司 | A kind of converter dewatering unit that can improve fume-dehydrating effect |
| CN107699648A (en) * | 2017-11-29 | 2018-02-16 | 中冶南方工程技术有限公司 | A kind of full recovery system of blast furnace top pressure-equalizing bleeding coal gas and method |
| CN112941261A (en) * | 2019-11-26 | 2021-06-11 | 阜新达诚科技有限公司 | Blast furnace charging bucket voltage-sharing coal gas wet dedusting recovery device |
| CN114058759A (en) * | 2020-08-03 | 2022-02-18 | 阜新达诚科技有限公司 | Blast furnace charging bucket voltage-sharing coal gas dust removal recovery unit |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
| CN112745968B (en) * | 2021-02-02 | 2024-05-24 | 新疆八一钢铁股份有限公司 | Dewatering and dechlorinating device for gas of European smelting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1023717C (en) | 1994-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGYE SAIDI ENGINEERING TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: CHONGQING IRON AND STEEL DESIGN INST., MINISTRY OF METALLURGICAL INDUSTRY |
|
| CP03 | Change of name, title or address |
Address after: 400013 No. 1, Shuang Steel Road, Shizhong District, Chongqing Patentee after: Zhongye Saide Engineering Technology Co., Ltd. Address before: 630013, No. 1, Shuang Steel Road, Shizhong District, Sichuan, Chongqing Patentee before: Chongqing Iron and Steel Design Inst., Min MI |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20101215 Granted publication date: 19940209 |