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1. 发明专利

JPH01316408A METHOD FOR COOLING EXHAUST GAS IN PRE-TREATING EQUIPMENT OR THE LIKE FOR MOLTEN IRON 失效
公开(公告)号：JPH01316408A
公开(公告)日：1989-12-21
申请号：JP14463488
申请日：1988-06-14
申请人： SUMITOMO HEAVY INDUSTRIES , KAWASAKI STEEL CO
发明人： ISHIKAWA KORETAKA , ISHITOBI CHITOSE , ARIYOSHI MASAHIRO , MIZUFUJI MASATO , KUMETA TAKAHIRO
IPC分类号： C21C1/00 , F27D17/00
摘要： PURPOSE:To effectively cool gas temp. to the temp. to be suitable to collect dust while recovering contained heat of the gas by beforehand passing through the specific construction of steel plate-made regenerater at the time of cooling the gas, which intermittently changes the temp. and generates at the time of pre-refining the molten iron in a torpedo car. CONSTITUTION:The dust-containing gas generating at the time of receiving the molten iron tapping from a blast furnace into the torpedo car and adding the pre-refining agent of desulfurizing, etc., is intermittently changed to >=550 deg.C in high temp. At the time of collecting the dust with a dust collector of bag filter, etc., by cooling this gas, the high temp. gas is flowed in the regenerator fitting the multiple steel plates 5 having 8-16mm thickness to the supporting lever 7 in 10-30mm interval at 10-20m/sec flow speed to adsorb the contained heat to the steel plate. At the time of lowering the gas temp., the gas is heated with the steel plate 5 heated at high temp. and the heat exchanger is passed as the gas having little temp. difference and after recovering the contained heat, the dust is collected with the bag filter.

2. 发明专利

JPS6260808A GASIFYING FURNACE FOR METALLIC BATH AND TREATMENT OF GAS 失效
公开(公告)号：JPS6260808A
公开(公告)日：1987-03-17
申请号：JP20055485
申请日：1985-09-12
申请人： SUMITOMO HEAVY INDUSTRIES , SUMITOMO METAL IND
发明人： SHINANO KUNIZO , ISHITOBI CHITOSE , OISHI KIICHIRO , FUKUDA JUICHIRO
IPC分类号： C21C5/40 , C10J3/84
摘要： PURPOSE:To maintain the max. dust removing efficiency as against the flow rate fluctuation of generated gas by cooperatively adjusting the opening degrees of primary and secondary Venturi scrubbers thereby adjusting the ratio of the differential pressures between both Venturi scrubbers. CONSTITUTION:The pressure in the throat of the gas generated in a gasifying furnace 1 is detected. The damper opening degrees of the primary Venturi scrubber 3 and the secondary Venturi scrubber 4 are adjusted by a driving device 13 via a throat pressure controller 6 and a signal controller 12 in accordance with the detected value. The differential pressure of the primary Venturi scrubber 3 is first adjusted in a 400-500mmAq range by such opening degree adjustment. The ratio between the differential pressure of the primary Venturi scrubber 3 and the differential pressure of the secondary Venturi scrubber 4 is then adjusted in a 0.30-0.32 range. The response speed of the pressure control in the furnace throat is increased and the dust removing efficiency of both Venturi scrubbers 3, 4 is maintained at a high level according to such adjustment.

3. 发明专利

JPS61268791A METHOD OF TREATING GAS EVOLVED FROM COAL GASIFY FURNACE, OR THE LIKE 失效
公开(公告)号：JPS61268791A
公开(公告)日：1986-11-28
申请号：JP11123385
申请日：1985-05-23
申请人： SUMITOMO HEAVY INDUSTRIES
发明人： ISHITOBI CHITOSE
IPC分类号： C10J3/00
摘要： PURPOSE:To make start and end of furnace operation easy, and to improve gas recovery efficiency, by setting a by-path flue changeable to a suction exhauster side, and using changeably a normal-pressure operation method to introduce an evolved gas to an atmosphere release side and a pressure operation method to sent the gas to a gas recovery side. CONSTITUTION:The suction exhauster 6 is operated to sena an evolved gas to the flues 7, 8, 10 and 17, the gas is cooled by the gas cooler 3, exhausted through the dust collectors 4 and 5 to atmosphere (furnace opening is opened and normal-pressure operation is carried out). The furnace opening part of molten iron bath furnace is closed and sealed, and the exhauster 6 is stopped. Then, the pressure at the furnace opening part is raised, the evolved gas is sent through the flue 7 by the pressure to the flue 10. When this gas output pressure reaches a gas recovery pressure, it is recognized by the detector 24 to operate the actuator 18, the divergence of the dust collector 5 is regulated corresponding to the furnace opening pressure of the bath furnace, the evolved gas is transported to a gas holder and stored (space between furnace opening part and flue is closed, and pressure operation is carried out).

4. 发明专利

JPS6263610A TREATMENT OF GAS PRODUCED IN METALLIC BATH GASIFYING FURNACE 失效
公开(公告)号：JPS6263610A
公开(公告)日：1987-03-20
申请号：JP20311185
申请日：1985-09-13
申请人： SUMITOMO HEAVY INDUSTRIES , SUMITOMO METAL IND
发明人： SHINANO KUNIZO , ISHITOBI CHITOSE , OISHI KIICHIRO , FUKUDA JUICHIRO
IPC分类号： F27D17/00 , C21C5/40
摘要： PURPOSE:To improve the response characteristics of respective dampers and to obtain always the max. dust removal efficiency by constituting the dampers of primary and secondary Venturi scrubbers in such a manner that the openings thereof can be varied and adjusting the respective opening degree according to the rate of the raw materials to be charged into a furnace and the internal pressure of the furnace. CONSTITUTION:The amt. of the gasifying raw material such as coal to be charged from a gasifying raw material blowing device 1 into a gasifying furnace 14 is measured by a flow meter 2 and the supply rate of pressurized oxygen is adjusted according to the measured amt. of the raw materials to be charged; at the same time, the damper opening degree of the primary Venturi scrubber 20 is so set by a calculator 5 and a damper driver 19 that the differential pressure thereof is maintained in a specified range. On the other hand, the internal pressure in the throat part of the furnace 14 is detected and the damper opening degree of the secondary Venturi scrubber 23 is adjusted by a throat pressure controller 13 and a damper driver 21 to maintain the specified internal pressure of the furnace 14. The always max. dust removal efficiency is thus obtd. without generating a time lag with the fluctuation in the flow rate of the produced gas contg. fine dust at a high concn.

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