CN103743241A - Novel high-temperature and high-pressure electric heating furnace - Google Patents

Novel high-temperature and high-pressure electric heating furnace Download PDF

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Publication number
CN103743241A
CN103743241A CN201410020404.7A CN201410020404A CN103743241A CN 103743241 A CN103743241 A CN 103743241A CN 201410020404 A CN201410020404 A CN 201410020404A CN 103743241 A CN103743241 A CN 103743241A
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reaction tube
tube
heating furnace
pottery
temperature
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CN201410020404.7A
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CN103743241B (en
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邵志伟
黄亚继
严玉朋
刘长奇
杨高强
伏启让
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Southeast University
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Southeast University
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Abstract

A novel high-temperature and high-pressure electric heating furnace comprises a discharging tube, a reaction gas feeding tube, connectors, an Al2O3 ceramic reaction tube, a shell, a furnace lining gas feeding tube, silicon and molybdenum rods, aluminum silicate fiber heat-insulation cotton, a slagging tube and the like, wherein the upper end of the Al2O3 ceramic reaction tube is respectively connected with the discharging tube and the reaction gas feeding tube through the connectors, and connection positions are sealed by using graphite packing; the lower end of the Al2O3 ceramic reaction tube is connected with the slagging tube through a pipe, and a connection position is sealed by using high-temperature glue; the silicon and molybdenum rods are hung perpendicularly and are uniformly arranged around the Al2O3 ceramic reaction tube; a heat-insulation material is filled between the shell and an electric heating element; and inert gas with certain pressure is fed between the shell and the electric heating element. The Al2O3 ceramic reaction tube and the shell can bear the temperature of 1500 DEG C and the pressure of 1.5MPa, so that the novel high-temperature and high-pressure electric heating furnace is applicable to pilot-scale study on pyrolysis, gasification and combustion of solid carbonic fuels under the conditions of high temperature and high pressure, and has the advantages of quick temperature rising and stable pressurization.

Description

A kind of new type high temperature high-tension electricity heating furnace
Technical field
The present invention relates to a kind of HTHP electric furnace, be particularly useful for solid carbon fuel gasification under high pressure-temperature condition, pyrogenation and combustion pilot scale research, belong to recovery energy field.
Background technology
HTHP electric furnace not only has the feature that furnace temperature is even, heat and mass is fast, and the operating pressure of raising heating furnace can make facility compact, reduce compression energy consumption and oxygen consumption.Temperature and pressure is the key parameter that affects chemical reaction rate, for example pyrolysis of coal process, and along with pressure raises, the production rate of gaseous state and solid product increases and the production rate decline of liquid product; Along with temperature raises, gaseous state productive rate is linear substantially to be increased, and liquid productive rate increases to some extent; In addition furnace temperature improves the problem that can also solve easy coking and slagging in stove.
For middle-size and small-size experimental rig, because inlet amount is few, during test, be difficult to meet heat self-balancing, therefore need electrical heating just can reach the required hot conditions of reaction.Can pressure-bearing when common stainless steel tube is used continuously at 800～1150 ℃ on the market, but when over 1200 ℃, can wriggling phenomenon, can not pressure-bearing.If therefore adopt stainless steel tube as reaction tube, directly heat stainless steel tube by electrical heating, in pipe, can only carry out synthesis under normal pressure, can not carry out compressive reaction.In view of the foregoing, traditional heating furnace device is because of materials limitations, often be difficult to meet two kinds of conditions of high pressure and high temperature simultaneously, be also difficult on the market to find can successive reaction HTHP electric furnace, so the mentioned HTHP electric furnace of the present invention has realistic meaning.
Summary of the invention
Goal of the invention: for above-mentioned prior art, provide a kind of simple in structure, easy to operate, can realize can continued operation HTHP electric furnace, can meet 1500 ℃, the experimental condition of 1.5MPa.
Technical scheme: a kind of new type high temperature high-tension electricity heating furnace device, comprises tremie pipe, reaction air inlet pipe, upper water collar, some Si-Mo rods, Al 2o 3pottery reaction tube, housing, lower water collar, scum pipe, heat-barrier material; Wherein, described Al 2o 3pottery reaction tube is vertically set on enclosure interior, and described upper water collar and lower water collar are separately positioned on Al 2o 3the end positions of pottery reaction tube, Al 2o 3pottery reaction tube top connects tremie pipe and reaction air inlet pipe, Al 2o 3pottery reaction tube bottom connects scum pipe, and described Si-Mo rod is arranged on Al 2o 3the surrounding of pottery reaction tube, Si-Mo rod and Al 2o 3between pottery reaction tube, be provided with high-temperature insulation support; Described heat-barrier material is filled in enclosure interior.
As preferred version of the present invention, described Al 2o 3the top of pottery reaction tube is connected with described reaction air inlet pipe with described tremie pipe respectively by coupling, and one end of described coupling is socketed in Al 2o 3pottery reaction tube is outside, and one end of described tremie pipe is through coupling and stretch into Al 2o 3pottery reaction tube, described reaction air inlet pipe is arranged on the side of coupling.
As improvement of the present invention, described coupling is by bump joint and Al 2o 3pottery reaction tube is fixedly connected with, and adopts graphite packing_seal.
As the present invention, further improve, described heat-barrier material is double-layer structure, and skin arranges alumina silicate fibre, between described Si-Mo rod and alumina silicate fibre, arranges containing zirconium type 1400 ceramic fibres.
As the present invention, to further improvement, also comprise the furnace lining air inlet pipe that is communicated with enclosure interior, in described furnace lining air inlet pipe, be connected with inert gas.
As the present invention, further improve, described Si-Mo rod is the six roots of sensation, adopts vertical hanging mode to be evenly arranged, and the folded central angle of adjacent two Si-Mo rod is 60 °.
As the present invention, further improve the adjacent upper water collar of described Si-Mo rod cold junction.
As the present invention, further improve again described Al 2o 3between pottery reaction tube and described lower water collar, adopt high-temp glue sealing.
Beneficial effect: in (1) HTHP electric furnace of the present invention, Al 2o 3pottery reaction tube can bear 1500 ℃ of high temperature, and electrical heating elements adopts Si-Mo rod, and Si-Mo rod maximum heating temperature can reach 1500 ℃; Between housing and electrical heating elements, skin is alumina silicate fibre, internal layer adopts containing zirconium type 1400 ceramic fibres, and pass into the inert gas of certain pressure, lower heat conductivility can guarantee that skin temperature is lower than 40 ℃, far below carbon steel creep temperature, thereby can provide the high temperature and high pressure environment of continous-stable.(2) Al 2o 3pottery reaction tube two ends are equipped with water collar, and upper water collar can guarantee that fuel is before entering the effective bringing-up section of Si-Mo rod, and temperature is lower than 50 ℃, not with reaction gas generation chemical reaction, in order to avoid stop up in blanking process; Lower water collar is reduced to stainless steel tube creep temperature below 1200 ℃ by the flue-gas temperature producing after fuel reaction, is convenient to follow-up connection scum pipe.(3) because of Al 2o 3there is the phenomenon of expanding with heat and contract with cold in pottery reaction tube and housing, in order to prevent Al in electric furnace running 2o 3pottery reaction tube in reaction gas crossfire in housing, described Al 2o 3pottery reaction tube and upper end water-cooled section adopt presses graphite packing mode to solve sealing, described Al 2o 3pottery reaction tube and lower end water-cooled section adopt high-temp glue sealing.
Accompanying drawing explanation
What accompanying drawing 1 showed is the body of heater profile in the present invention;
What accompanying drawing 2 showed is the body of heater sectional view in the present invention;
What accompanying drawing 3 showed is the top seal enlarged drawing in the present invention;
What accompanying drawing 4 showed is the lower seal enlarged drawing in the present invention;
Have as shown in the figure: tremie pipe 1; Coupling 2; Reaction air inlet pipe 3; Upper water collar 4; Cooling water inlet pipe 5; Cooling water outlet pipe 6; Si-Mo rod 7; Al 2o 3 pottery reaction tube 8; Furnace lining air inlet pipe 9; Housing 10; Lower water collar 11; Cooling water inlet pipe 12; Cooling water outlet pipe 13; Scum pipe 14; Alumina silicate fibre 15; Containing zirconium type 1400 ceramic fibres 16; Graphite packing 17; Pad 18; High-temp glue 19.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of new type high temperature high-tension electricity heating furnace device, comprises tremie pipe 1, coupling 2, reaction air inlet pipe 3, upper water collar 4, upper cooling water inlet pipe 5, upper cooling water outlet pipe 6, some Si-Mo rods 7, Al 2o 3 pottery reaction tube 8, furnace lining air inlet pipe 9, housing 10, lower water collar 11, lower cooling water inlet pipe 12, lower cooling water outlet pipe 13, scum pipe 14, alumina silicate fibre 15, containing zirconium type 1400 ceramic fibres 16.As shown in Figure 2, the column structure that its middle shell 10 is carbon steel material, Al 2o 3 pottery reaction tube 8 is vertically set on housing 10 inside, and Si-Mo rod 7 is the six roots of sensation, adopts vertical hanging mode to be evenly arranged in Al 2o 3the surrounding of pottery reaction tube 8, the folded central angle of adjacent two Si-Mo rod is 60 °, Si-Mo rod 7 and Al 2o 3between pottery reaction tube 8, be provided with high-temperature insulation support, such structure is guaranteed Al 2o 3pottery reaction tube can be heated evenly.At the inner filling with insulation material of housing 10, this heat-barrier material is double-layer structure, and skin arranges alumina silicate fibre 15, between Si-Mo rod 7 and alumina silicate fibre 15, arranges containing zirconium type 1400 ceramic fibres 16.At housing 10, be provided with furnace lining air inlet pipe 9, by furnace lining air inlet pipe 9, in housing 10, pass into certain pressure inert gas.
As shown in Figure 3, upper water collar 4 and lower water collar 11 are separately positioned on Al 2o 3the end positions of pottery reaction tube 8.Wherein, Al 2o 3the top of pottery reaction tube 8 is connected with reaction air inlet pipe 3 with tremie pipe 1 respectively by coupling 2.Coupling 2 is socketed in Al 2o 3 pottery reaction tube 8 outsides, and and Al 2o 3 pottery reaction tube 8 is fixedly connected with by bump joint; Coupling 2 and Al 2o 3between pottery reaction tube 8, adopt 17 sealings of graphite packing, graphite packing 17 bottoms are provided with support pad 18, prevent that it from dropping.。One end of tremie pipe 1 is through coupling 2 and stretch into Al 2o 3 pottery reaction tube 8, tremie pipe 1 stretches into Al 2o 3part and the Al of pottery reaction tube 8 2o 3between pottery reaction tube 8 tube walls, leave space.Reaction air inlet pipe 3 is arranged on the side of coupling 2.
The column structure of upper water collar 4 for being welded by inner core, urceolus, upper head plate, bottom plate, upper cooling water inlet pipe 5, upper cooling water outlet pipe 6.Inner core parcel Al 2o 3 pottery reaction tube 8, urceolus diameter is consistent with housing 10 diameters, and bottom plate is fixedly connected with housing 10.In order to control described Si-Mo rod 7 cold junction temperatures, the bottom plate of the adjacent upper water collar 4 of Si-Mo rod 7 cold junction, guarantees that Si-Mo rod 7 wiring cold junctions are no more than 200 ℃.
HTHP electric furnace in the present invention is applicable to pyrolysis, gasification and the burning pilot scale research of solid carbon fuel, and the reacting gas of carbonic solid fuels and 3 inputs of reaction air inlet pipe is at Al 2o 3hybrid Heating in pottery reaction tube 8, under HTHP effect, carries out the correlated responses such as pyrolysis, gasification and burning of material, and product is discharged fuel and reacting gas by scum pipe 14.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (8)

1. a new type high temperature high-tension electricity heating furnace device, is characterized in that: comprise tremie pipe (1), reaction air inlet pipe (3), upper water collar (4), some Si-Mo rods (7), Al 2o 3pottery reaction tube (8), housing (10), lower water collar (11), scum pipe (14), heat-barrier material; Wherein, described Al 2o 3pottery reaction tube (8) is vertically set on housing (10) inside, and described upper water collar (4) and lower water collar (11) are separately positioned on Al 2o 3the end positions of pottery reaction tube (8), Al 2o 3pottery reaction tube (8) top connects tremie pipe (1) and reaction air inlet pipe (3), Al 2o 3pottery reaction tube (8) bottom connects scum pipe (14), and described Si-Mo rod (7) is arranged on Al 2o 3the surrounding of pottery reaction tube (8), Si-Mo rod (7) and Al 2o 3between pottery reaction tube (8), be provided with high-temperature insulation support; Described heat-barrier material is filled in housing (10) inside.
2. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, is characterized in that: described Al 2o 3the top of pottery reaction tube (8) is connected with described reaction air inlet pipe (3) with described tremie pipe (1) respectively by coupling (2), and one end of described coupling (2) is socketed in Al 2o 3pottery reaction tube (8) outside, one end of described tremie pipe (1) is through coupling (2) and stretch into Al 2o 3pottery reaction tube (8), described reaction air inlet pipe (3) is arranged on the side of coupling (2).
3. a kind of new type high temperature high-tension electricity heating furnace device according to claim 2, is characterized in that: described coupling (2) is by bump joint and Al 2o 3pottery reaction tube (8) is fixedly connected with, and adopts graphite packing (17) sealing.
4. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, it is characterized in that: described heat-barrier material is double-layer structure, skin arranges alumina silicate fibre (15), between described Si-Mo rod (7) and alumina silicate fibre (15), arranges containing zirconium type 1400 ceramic fibres (16).
5. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, is characterized in that: also comprise and be communicated with the inner furnace lining air inlet pipe (9) of housing (10), in described furnace lining air inlet pipe (9), be connected with inert gas.
6. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, is characterized in that: described Si-Mo rod (7) is the six roots of sensation, and adopt vertical hanging mode to be evenly arranged, the folded central angle of adjacent two Si-Mo rod is 60 °.
7. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, is characterized in that: the adjacent upper water collar of described Si-Mo rod (7) cold junction (4).
8. a kind of new type high temperature high-tension electricity heating furnace device according to claim 1, is characterized in that: described Al 2o 3between pottery reaction tube (8) and described lower water collar (11), adopt high-temp glue (19) sealing.
CN201410020404.7A 2014-01-16 2014-01-16 Novel high-temperature and high-pressure electric heating furnace Expired - Fee Related CN103743241B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896928A (en) * 2015-06-17 2015-09-09 河南屹力新能源科技有限公司 High-temperature sintering furnace with controllable gas pressure and temperature
CN112391682A (en) * 2020-11-12 2021-02-23 湖北鼎晖耐火材料有限公司 Pressure cooker for polycrystalline mullite fiber spinning
CN114636313A (en) * 2022-02-23 2022-06-17 大连海事大学 Heating and heat-preserving equipment for high-temperature pulsating heat pipe and design method thereof
CN115149030A (en) * 2022-08-09 2022-10-04 广东佛燃科技有限公司 Gas electric heating device for solid oxide galvanic pile test

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59206490A (en) * 1983-05-11 1984-11-22 Hitachi Ltd Apparatus for drawing out coal ash slag
CN2033108U (en) * 1988-03-02 1989-02-22 北京钢铁学院 High temperature and high-pressure moly filament furnace
CN2630773Y (en) * 2003-07-04 2004-08-04 河北工业大学 Melting furnace for melt physical property testing
CN201583125U (en) * 2009-12-22 2010-09-15 山东宇佳新材料有限公司 High-temperature pressure nitriding furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59206490A (en) * 1983-05-11 1984-11-22 Hitachi Ltd Apparatus for drawing out coal ash slag
CN2033108U (en) * 1988-03-02 1989-02-22 北京钢铁学院 High temperature and high-pressure moly filament furnace
CN2630773Y (en) * 2003-07-04 2004-08-04 河北工业大学 Melting furnace for melt physical property testing
CN201583125U (en) * 2009-12-22 2010-09-15 山东宇佳新材料有限公司 High-temperature pressure nitriding furnace

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896928A (en) * 2015-06-17 2015-09-09 河南屹力新能源科技有限公司 High-temperature sintering furnace with controllable gas pressure and temperature
CN104896928B (en) * 2015-06-17 2016-10-05 河南屹力新能源科技有限公司 A kind of air pressure, temperature controlled high temperature sintering furnace
CN112391682A (en) * 2020-11-12 2021-02-23 湖北鼎晖耐火材料有限公司 Pressure cooker for polycrystalline mullite fiber spinning
CN114636313A (en) * 2022-02-23 2022-06-17 大连海事大学 Heating and heat-preserving equipment for high-temperature pulsating heat pipe and design method thereof
CN114636313B (en) * 2022-02-23 2024-04-12 大连海事大学 Heating and heat-preserving equipment for high-temperature pulsating heat pipe and design method thereof
CN115149030A (en) * 2022-08-09 2022-10-04 广东佛燃科技有限公司 Gas electric heating device for solid oxide galvanic pile test
CN115149030B (en) * 2022-08-09 2023-05-02 广东佛燃科技有限公司 Gas electric heating device for solid oxide electric pile test

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