• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A removable annular hearth member (40), shaped to fit over the slag outlet member (20) of a slagging gasifier, comprises a cast body of high thermal conductivity having integral liquid coolant passageways, the central openings of the ahnu- lar hearth member and slag outlet member being arranged in vertical alignment for the discharge of slag, and the lower portion of the hearth member opening having a lip or beak (70) extending downwardly so as to form a sealed joint with the slag outlet opening whereby in operation of the gasifier to prevent penetration of molten slag therebetween.
    公开号:SU923373A3
    申请号:SU792781756
    申请日:1979-06-15
    公开日:1982-04-23
    发明作者:Теренс Брукс Чарльз
    申请人:Бритиш Газ Корпорейшн (Инофирма)；
    IPC主号:
    专利说明:

    (54) COAL GASIFICATOR
    one
    The invention relates to a coal gasification dp installation in which coal or other carbonaceous fuel is introduced into the upper part of the gasification chamber and gasified under high pressure and temperature using gas, such as oxygen and steam, introduced into the fuel layer through tuyeres. The remaining ash is collected in the form of molten slag and iron in the bottom of the vessel, from where it is periodically discharged (tapping) down through the slag opening in the hearth into the water contained in the quenching chamber of the vessel. Usually, molten slag and iron are maintained in the hearth by directing hot combustion products from the burner located below the slag outlet, through the outlet to keep the slag and iron in the hearth, the melted slag outlet and is also controlled by stopping or a decrease in the output from the burner and a decrease in pressure in the quenching chamber by controlling the exhaust through its outlet 25
    system to obtain a pressure differential between the quenching chamber and the vessel.
    A coal gasifier is known, a gasification switching chamber equipped with means for coal, oxygen and water vapor input, a removable annular bottom element cooled by liquid located in the lower part of the chamber, and a contacting element for slag discharge cooled by a liquid and having a hole for removal slag, located coaxially with the central axis of the chamber and the hole in the Kotchievy bottom element.
    In the known gasifier, the ring bottom element is located concentrically (outside) the slag discharge element and the central inner surface of the ring element is in contact with the outer surface of the element for - the discharge
    slag Cl}.
    However, when using such a construction, liquid slag and cast iron, flowing into the lower part of the inclined hearth, seep between the annular hearth 39 element and the element for draining the scoop, causing serious damage and the gasifier to replace these elements. The aim of the invention is to increase the period of continuous operation by increasing the tightness of the hearth. The goal is achieved by containing in the gasification chamber, equipped with means for introducing coal, oxygen and steam, located at the lower part of the chamber, a removable annular bottom element cooled with liquid and a slurry unit in contact with it, cooled with liquid and having an opening to remove slag, located coaxially with the central axis of the chamber and the hole in the annular bottom element, the annular bottom element is located above the element for the slag discharge and the bottom surface of the annular bottom element This is in contact with the upper surface of the slag discharge element. In addition, the bottom element is provided with an annular downwardly directed protrusion located in its lower central part, the outer peripheral surface of the protrusion 1 corresponds to the inner peripheral surface of the hole of the element for draining the spike. / The erosion resistance of the annular bottom element for slag production depends on the critical design factors, including among other thermal conductivity of the material used, the shape and geometry of the metal mass, the size and shape of the hole and the size, depth and location of the cooling channels relative to the surfaces exposed to heat. The quantity and flow rate of the coolant is an important factor in the design of the annular hearth electric element and element to release the slag, since the surfaces must be cooled efficiently so that the temperature is maintained at them, but, on the other hand, the excess The amount of heat. It is usually recommended that the coolant flow rate be about 0 to 6-0.9 m / s in order to obtain a constant temperature of the wall of the channel. It is recommended that the bottom ring element and the slag production element be made of copper and copper alloys. Spiral-shaped cooling channels are also recommended, and their turns should be arranged around and around the surfaces of the 3 annular bottom element and the slag production element. Typically, the cooling channels are made of a spiral-shaped metal tube, the ends of which protrude from the surrounding mass of metal to form an inlet and outlet. It is desirable that the upper surface of the bottom element has a plate-shaped form and its inner peripheral wall is formed by a rotational surface, whose profile describes a diverging or converging sprue connected to the internal profile of the slag discharge hole. Usually, the hearth area surrounding the annular bottom element is tilted down and is formed by a layer of refractory material including coolant channels enclosed therein. However, for example, where the inclined under lining or formed by a series of partially overlapping annular layers of refractory bricks, the annular bottom element may be cooled as a result of contact with the cooling liquid of the bottom element that supports it. FIG. 1 shows a gasifier, a longitudinal section; in fig. 2 is an enlarged longitudinal section of the hearth device. The gasifier has an ogene-lined, pressurized gasification chamber 1, into which it feeds coal from the hopper 2 and is distributed by a rotating distributor 3. Oxygen and steam are introduced into a layer of fuel (not shown) through (Chrome 4, to gasify coal. When using a gasifier, molten slag is collected on an inclined hearth 5 and is periodically discharged through an opening 6 to remove slag, made in element 7. A quenching chamber 8 is attached to the lower part of the gasification chamber 1 tubular ring 9. Slag from the quenching chamber 8 enters the hopper 10 when the valve 11 is opened. The pellets are unloaded from the hopper 10 to the moving conveyor 12. Water supplied to the ring 9 through the pipe 13 can be recirculated through the pipes 14 and 15 from the quenching chamber and a hopper 10 by means of a pump and a filter (not shown). The quenching chamber 8 is gas-tight attached to the bottom of the gasification chamber 1 through an interchangeable 59 flange 16 of multi-joint type, which contains a steel sleeve 17, having a thick steel flange 18, welded to the lower end, and a steel ring block 19, welded to the upper end of the sleeve 17. Element 7 dp of the slag discharge (release) is prepared by block 19 with ps bolts of bolts 20. Cooling water is supplied to the spiral channels 21 provided in the element 7 for discharging slag through the inlet and outlet ports 22 and 23, whose external connections pass through the flange 18. The annular bottom element 24 is supported on the top of the element 7 for discharging slag and the annular unit 19. The cooling water is also supplied to the channels 25 in the element 24 che cut inlet and outlet nozzles 26 and 27, whose external connections pass through flange 18. Ring burner 28 with coax mixing nozzle is angularly attached below element 7 around its central orifice, and air and / or oxygen and gas are fed through tubes 29, which have connections (not shown) in the flange 18. It is recommended that the nodal joints of gasification chambers should be gas-tightly fastened with bolts (not shown) that pull the quenching chamber flange to the flange on the bottom of the gasifier chamber to clamp the assembly flange 18 between them. With this design, burner 28, slag ejection element 7 and ring bottom element 24 can be easily removed for repair by unscrewing the bolts and lowering the quenching chamber from the gasifier chamber and removing the laminated flange assembly. Hearth. the element 24 is formed with a downward protrusion of the DZ, whose outer peripheral surface corresponds to the inclined surface 31 of the element 7 for discharging slag with which it is in contact. This design effectively seals the aforementioned joint of surfaces 3 Although, in the proposed construction, the surface of rotation of the opening of the end bottom element 32 has a downwardly converging profile, in some cases it may have a diverging internal: this profile protects the element for release the schoak from the turbulence created in the stream ensures the washing of the shpak and iron, in addition, helps to relieve bubble formation and pulsations from the interaction of n resi and the shpak bath. Phromodol NeobreteTi 1. Coal gasifier, including a gasification chamber, equipped with means for coal, oxygen and water vapor input, located in the lower part of the chamber (bottom) removable ring bottom element, cooled with liquid, and in contact with it an element for slag discharge, cooled by a liquid and having an opening dp for dumping spine, located coaxially with the central axis of the chamber and a hole in the annular bottom element, characterized in that with a chain to increase the period of continuous bots due to the tightness of the hearth, The end bottom element is located above the cnHEia element of the spike and the bottom surface of the annular bottom element is in contact with the upper surface of the slag discharge element "2. Gasifier according to claim 1, which is made from by an annular downwardly directed protrusion located in its lower central part, the outer peripheral surface of the protrusion corresponds to the inner peripheral surface of the orifice - -. STI element to discharge the slag. Sources of information taken into account in the examination 1. US patent number 4O78903, cl. 48-62, published. 14.O3.78.
    "SI
    权利要求:
    Claims (2)
    [1]
    Claim
    1. Coal gasifier, including a gasification chamber, equipped with means for introducing coal, oxygen and water vapor, located in the lower part of the chamber : measures (hearth): removable annular hearth element, cooled by liquid, and con-; a slag draining element with it, cooled by a liquid and having a spill drain hole, located coaxially with the central axis of the chamber and the hole in the annular hearth element, characterized in that, with a chain for increasing the term of continuous operation by increasing the tightness of the hearth, the annular hearth element located above the element for draining the nail and the lower surface of the annular hearth element is in contact with the upper surface of the element for draining the nail.
    [2]
    2. The gasifier according to Claim. Characterized in that the hearth element is made with an annular downward protrusion located in its lower central part, the outer peripheral surface of the protrusion corresponds to the inner peripheral surface of the hole of the member for draining the bead.
    类似技术:
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    US4177042A|1979-12-04|Coal gasification plant
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    NL7905846A|1981-01-29|Coal gasification device - includes an element for coal slag removal comprising a water cooled metal e.g. copper casting
    同族专利:
    公开号 | 公开日
    EP0008847B2|1985-03-27|
    AU4794379A|1980-03-13|
    ZA792746B|1980-06-25|
    GB2029946A|1980-03-26|
    JPS5839467B2|1983-08-30|
    GB2029946B|1982-12-01|
    US4192654A|1980-03-11|
    EP0008847A1|1980-03-19|
    PL216355A1|1980-04-21|
    PL116168B1|1981-05-30|
    CA1111253A|1981-10-27|
    AU511977B2|1980-09-18|
    JPS5554395A|1980-04-21|
    EP0008847B1|1981-08-05|
    DD144276A5|1980-10-08|
    DE2960573D1|1981-11-05|
    CS221507B2|1983-04-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2961722A|1958-10-29|1960-11-29|Skf Svenska Kullagerfab Ab|Casting molten material in a vacuum|
    US3494981A|1965-05-10|1970-02-10|Hooker Chemical Corp|Halogen-containing polymer compositions|
    FR1482084A|1966-03-25|1967-05-26|Advanced electric furnace for very high temperature melting|
    GB1564106A|1975-11-27|1980-04-02|British Gas Corp|Slagging coal gasification plant|
    GB1508671A|1976-12-09|1978-04-26|British Gas Corp|Coal gasification plant|
    GB1569297A|1977-02-18|1980-06-11|British Gas Corp|Hearth arrangements and coal gasification plants incorporating such hearth arrangements|DD150313A3|1978-09-28|1981-08-26|Friedrich Berger|DEVICE FOR GASIFICATION OF ABSORBENT FUELS IN FLYING CLOUD|
    DE3009851C2|1980-03-14|1983-09-15|Karrena GmbH, 4000 Düsseldorf|Reactor containers, in particular for gasifying fossil fuels|
    GB2108644B|1981-10-27|1985-01-09|British Gas Corp|Coal gasification plant|
    GB2143932A|1983-07-22|1985-02-20|Gordon Michael Priest|Furnace|
    US4653677A|1985-04-16|1987-03-31|The Dow Chemical Company|Vessel having a molten material outlet|
    US4852997A|1987-10-05|1989-08-01|Shell Oil Company|Slag water bath process|
    US4828579A|1988-03-07|1989-05-09|Becker Michael W|Thermally insulated quench ring for a gasifier|
    US4902303A|1988-11-10|1990-02-20|Texaco Inc.|Separable quench ring and distribution channel for a gasification reactor|
    US4979964A|1989-06-22|1990-12-25|Shell Oil Company|Apparatus for preventing slag tap blockage|
    GB9411600D0|1994-06-09|1994-08-03|British Gas Plc|Coal slagging gasifier|
    DE102008033094A1|2008-07-15|2010-01-28|Uhde Gmbh|Gasification device with continuous solids discharge|
    CN104593085B|2015-01-08|2016-08-17|西安交通大学|A kind of granulating slag melts coal gasifier and coal gas preparation technology|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB7836126A|GB2029946B|1978-09-08|1978-09-08|Slag removal from coal gasification plant|
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