![]() Electric resistance furnace
专利摘要:
1483122 Electric furnaces ELEKTROSCHMELZWERK KEMPTEN GmbH 18 Dec 1974 [21 Dec 1973 6 May 1974] 54725/74 Heading F4B An electric resistance furnace has a porous bed 15 at the bottom, in which is embedded a first flue 16, and a sheet 19, covering a heap 12 of mixture, under which sheet is a second flue 16a, the flues serving to draw off gaseous reaction products formed in the heap. A resistive core is placed between conductors 13 to heat the mixture surrounding the core. The core may be of granular coke provided with an inner core of graphitized coke. The furnace may be for the production of silicon carbide, in which case the mixture may be granular coke and quartz sand, with auxiliary substances such as sawdust and sodium chloride. The flues are connected to extractors having means to adjust the rate of removal of the gas. An excess pressure may be allowed to build up under the sheet serving to support it. Specifications 1,483,123 and 1,483,121 are referred to. 公开号:SU784813A3 申请号:SU742090854 申请日:1974-12-20 公开日:1980-11-30 发明作者:Вибке Гюнтер;Корстен Андреас;Бенеке Теодор;Петерсен Фритц 申请人:Электрошмельцверк Кемптен Гмбх (Фирма); IPC主号:
专利说明:
(54) ELECTRIC OVEN RESISTANCE one The invention relates to metallurgy. A known electrical resistance furnace is provided with an electrode lj installed under it. five When operating the furnace, for example in the production of silicon carbide, a serious problem is the removal of waste 1ah of their gases. According to the reaction equation for tO production of silicon carbide SiO. + + 2CO per ton SiC, 1.4 tons of CO are formed, i.e. 1,120 m. In addition to CO, the exhaust gases also contain other gaseous compounds, for example, hydrocarbons, in particular methane and hydrogen sulfide, which are formed from impurities in the used coke. A disadvantage of the known furnace is that only a fraction of these gases 20 burned in the provided hsh eto: go holes in the side walls of the furnace and on the surface of the charge; the remaining gases escape from the furnace unit. The aim of the invention is to increase the efficiency of trapping gaseous reaction products. The goal is achieved by the fact that the furnace is equipped with a bed made of porous 30 placed under the floor. material, and / or covering the working volume flat floor, while inside the bed and / or under the floor laid venting channels. The bed is made in the form of a granular material. Grain is used as a granular material. The bottom of the bed and its slopes are sealed with a gas-tight layer, A gas-tight film, impregnated fabric can be used as a coating. Venting channels are made in the form of pipes. In the areas entering the gravel bed and under the covering, the vapor pipes are provided with side openings. Vent pipes are connected to a low pressure generator. For the purpose of self-supporting the coating with a furnace, it is equipped with a pressure regulating device installed in the gas outlet path, made in the form of a throttle valve. FIG. 1 shows a furnace unit in cross section} in FIG. 2 - the same in terms of.
权利要求:
Claims (11) [1] Below the level 1, there is a gravel bed 2, in which an exhaust pipe 3, made of iron, is laid, connected with a exhaust mine 4; h: the blower 5 is blown. The b mixture is covered with a polyethylene film 7. Under the film 7 a gas exhaust pipe 3, laid out of plastic, is connected through a fan 5 to an exhaust fireplace 4. Between the gravel bed 2 and the charge b is located from coarse pieces of the secondary raw material,. The principle of operation of this catcher was tested as follows. During the start-up of the furnace, after supplying voltage for a short period of operation, both fans 5 were simultaneously connected. Through periodic sampling At several measurement points in the immediate vicinity of the research institute of the furnace unit, it was found that the CO concentration does not exceed 50 ppm. Tests of the operation of a trap device, in which the amount of exhaust gases to obtain. The selective pressure under the coating is regulated by means of a throttle valve installed in front of the fan 5, showed that at a distance of 100 m from the furnace operating in open air, the GO concentration is 2-10 ppm (average readings for ½ h, which confirms the efficiency Gaseous products of the reaction Formula of the invention 1. An electric furnace of resistance contained under an installed electrode, characterized in that, in order to effectively catch gaseous products of the reaction, the furnace is equipped with od hearth bed made of a porous material, and / or covering the working volume of a flat surface, while inside the bed and / or under the coating vapor channels are routed. [2] 2. Furnace POP.1, characterized in that the bed is made of a granular material. [3] 3. Furnace according to claim 2, about aphids, so that gravel is used as a granular material. [4] 4.Stap rin. 1-3, that is, so that the bottom of the bed and its slopes are | separated by a gas-tight layer. [5] 5. Bake pop 1, distinguished by the fact that a gas-tight film is used as a coating. . [6] 6. Furnace according to claim 1. characterized by the fact that. impregnated fabric is used as a coating. [7] 7. Bake p. 1, differ- ing, and with that, the venting channels are made in the form of pipes. [8] 8. Furnace according to claim 7, that is, so that the exhaust pipes in the areas included in the gravel bed and Under the floor are provided with side holes. . [9] 9. The furnace according to claims 1, 7 and 8, differs from the fact that the exhaust pipes are connected to a pressure reduction generator. [10] 10. Furnace POP.1, characterized in that, in order to self-retain the coating over the furnace, it is provided with a pressure regulating device installed in the gas outlet duct. [11] 11. Furnace of claim 10, characterized in that the regulating device is made in the form of a throttle valve. Sources of information taken into account during the examination 1. Edneral F.P. .S eifrpovieTajinyprnn. steel and ferroalloys. M., Metallurgists, 1963, p.468.
类似技术:
公开号 | 公开日 | 专利标题 KR100724182B1|2007-05-31|Coke oven flue gas sharing SU784813A3|1980-11-30|Electric resistance furnace US2618548A|1952-11-18|Closed top side door US4038154A|1977-07-26|Pile furnace US2190493A|1940-02-13|Sintering apparatus US1872569A|1932-08-16|Operating a cupola furnace GB1500494A|1978-02-08|Pyroscrubber US2007586A|1935-07-09|Method for converting carbon dioxide contained in gases into carbon monoxide JPH07118651A|1995-05-09|Dust collector at oven port of coke oven and method for collecting dust SU1165861A1|1985-07-07|Ore-smelting electric furnace US1103196A|1914-07-14|Metallurgical furnace. RU2012842C1|1994-05-15|Electric furnace JP4317085B2|2009-08-19|Externally heated rotary kiln US1110359A|1914-09-15|Electric zinc-furnace with integral condenser. US3254986A|1966-06-07|Integrated charring and ore reduction methods and apparatus CA1092812A|1981-01-06|Method and apparatus for operating a calciner under apressure differential GB1512353A|1978-06-01|Coke ovens RU2099132C1|1997-12-20|Method of treating high-temperature effluent gases from tarry matters SU1270524A1|1986-11-15|Device for producing silicon carbide SU515353A1|1979-01-30|Oven for heat reprocessing of solid fuel US816214A|1906-03-27|Peat-oven. US2433591A|1947-12-30|Apparatus for smelting sulphur US2021284A|1935-11-19|Manufacture of zinc oxide US1964680A|1934-06-26|Method of reducing oxide ores or the like by means of gas US1364656A|1921-01-04|Industrial use of exhaust-gases of internal-combustion engines
同族专利:
公开号 | 公开日 CA1066019A|1979-11-13| CH583893A5|1977-01-14| JPS5529929B2|1980-08-07| RO63918A|1978-08-15| NL167516B|1981-07-16| FR2255564B1|1976-10-22| AU7668574A|1976-06-24| IN144032B|1978-03-11| IS2253A7|1975-06-22| SE412283B|1980-02-25| SE7416201L|1975-06-23| AR215836A1|1979-11-15| BR7410614D0|1975-09-02| IT1032174B|1979-05-30| NL7416064A|1975-06-24| JPS5096500A|1975-07-31| GB1483122A|1977-08-17| IS976B6|1977-12-15| HU171104B|1977-11-28| NO139753C|1979-05-02| PL91885B1|1977-03-31| YU340974A|1982-05-31| NO139753B|1979-01-22| NO744630L|1975-07-21| CS185666B2|1978-10-31| NL167516C|1981-12-16| US3976829A|1976-08-24| FR2255564A1|1975-07-18| DD116500A5|1975-11-20|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 US908357A|1908-07-11|1908-12-29|Carborundum Co|Method of producing silicon carbid.| US1684611A|1925-09-04|1928-09-18|Fed Abrasives Company|Electric furnace for producing silicon carbide| NO116124B|1966-07-29|1969-02-03|Svenska Flaektfabriken Ab|US4399546A|1979-09-28|1983-08-16|Dresser Industries, Inc.|Silicon carbide furnace| IT1191877B|1986-04-30|1988-03-23|Elettrocarbonium Spa|IMPROVEMENT IN MOBILE GRAPHING OVENS| US5571483A|1990-01-26|1996-11-05|Exolon-Esk Company|System of converting environmentally pollutant waste gases to a useful product| US5188649A|1991-08-07|1993-02-23|Pedro Buarque de Macedo|Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste| US5678236A|1996-01-23|1997-10-14|Pedro Buarque De Macedo|Method and apparatus for eliminating volatiles or airborne entrainments when vitrifying radioactive and/or hazardous waste| US7572425B2|2007-09-14|2009-08-11|General Electric Company|System and method for producing solar grade silicon| FR2977578B1|2011-07-06|2013-07-05|Produits Refractaires|PROCESS FOR PRODUCING SILICON CARBIDE|
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申请号 | 申请日 | 专利标题 DE2364109A|DE2364109C2|1973-12-21|1973-12-21|Extraction device for gaseous reaction products in furnace systems| DE19742421818|DE2421818C2|1974-05-06|Collection device for gaseous reaction products| 相关专利
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