EP0318071B1 - Water bath wetting device - Google Patents

Water bath wetting device Download PDF

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Publication number
EP0318071B1
EP0318071B1 EP88202343A EP88202343A EP0318071B1 EP 0318071 B1 EP0318071 B1 EP 0318071B1 EP 88202343 A EP88202343 A EP 88202343A EP 88202343 A EP88202343 A EP 88202343A EP 0318071 B1 EP0318071 B1 EP 0318071B1
Authority
EP
European Patent Office
Prior art keywords
water bath
conduit
slag
water
char
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88202343A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0318071A1 (en
Inventor
Clifford Charles Segerstrom
Charles Victor Sternling
Hans Wolfgang Luke
Hsi Lin Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of EP0318071A1 publication Critical patent/EP0318071A1/en
Application granted granted Critical
Publication of EP0318071B1 publication Critical patent/EP0318071B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C10J3/845—Quench rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/485—Entrained flow gasifiers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/52—Ash-removing devices
    • C10J3/526—Ash-removing devices for entrained flow gasifiers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only

Definitions

  • the present invention relates to an apparatus for wetting char and slag discharged under a coal gasification reactor to a water bath located below the reactor.
  • Such an apparatus is known from US-4,425,254.
  • This known system for quenching slag from a coal gasification reactor typically employs an annular duct perforated with holes for injecting oil therefrom in a random manner to wet slag in a water bath below and sink the slag.
  • the duct is provided with nozzles disposed in two rows in two locations one above the other along two inner circles at the surface of the annular duct. These nozzles are oriented at different angles to the surface of the water bath, these angles being common to the respective rows.
  • the perforated ducts used in this known system have a fixed number of holes each with a fixed diameter and fixed angle of injection for a selected type of coal having specific wetting characteristics.
  • the apparatus according to the present invention therefore is characterized by an adjustable spray mechanism to suit coals of different wetting characteristics, said spray mechanism comprising a separate interchangeable annular conduit; means for installing the said conduit above the said water bath; the said conduit being provided with threaded orifices disposed about the annular conduit; the said orifices having selected replaceable nozzles screwed therein in a single row; and means for injecting water or water and a wetting agent or water and a coagulating agent through the circular conduit.
  • the present invention relates in particular to an apparatus for wetting char and slag in a water bath below a coal gasification reactor, hereinafter referred to as a gasifier, wherein synthesis gas is generated.
  • synthesis gas occurs by partially combusting organic or carbonaceous fuel, such as coal, at relatively high temperatures in the range of 800 to 2000 °C and at a pressure range of from about 1 to 200 bar in the presence of oxygen or oxygen-containing gases in a gasifier.
  • Steam, carbon monoxide, carbon dioxide and oxygen-containing gases including air, oxygen-enriched air, and oxygen are optionally diluted with nitrogen and/or other inert gases.
  • the combustion may be complete or partial, the object of the combustion process being the production of synthesis gas for power generations.
  • the ash which is the inorganic, incombustible material is separated from the fuel during the combustion of the mineral fuel.
  • the ash is mainly obtained in solid (hereinafter referred to as char) or liquid (hereinafter referred to as slag) condition or in a combination thereof.
  • the char and slag exit the gasifier through a discharge opening, often referred to as a slag tap, and are generally collected in a water bath located below the slag tap of the reactor. In the water bath both char and slag are cooled, the slag is solidified, and char and slag are subsequently discharged.
  • the present invention relates to wetting the char and slag in the water bath to facilitate separating the char and slag from water.
  • a circular conduit containing water and possibly a wetting agent is provided with threaded ports for changing the nozzle configuration depending on the wetting characteristics of the char and slag.
  • An advantage of the present invention is the capability of adjusting the wetting of the char and slag in the water bath according to ascertained wetting characteristics of the char and slag.
  • the apparatus according to the invention is also suitable for other catalytic or finely divided particulate reactive solids such as those which can be combusted as, for example, lignite, anthracite, bituminous brown coal, soot, petroleum coke and the like.
  • the size of the solid carbonaceous fuel is such that about 90 percent by weight of the fuel has a particle size smaller than No. 6 mesh (A.S.T.M.).
  • an apparatus such as a conduit 26, for wetting char and slag 11 in a water bath 15 generally includes a nozzle configuration (shown in detail in Fig. 2) to achieve adequate wetting of the char and slag 11.
  • a nozzle configuration shown in detail in Fig. 2 to achieve adequate wetting of the char and slag 11.
  • Factors considered in selecting the configuration include the diameter of the nozzle 12, the force of the water, including possibly a wetting agent injected through the conduit 26 to impinge on the char and slag 11 in the water bath 15, the angle of impingement 14, and the direction of the nozzle 12 with respect to the location of the discharge opening 16 (Fig. 1) of the water bath 15.
  • the diameter of the nozzle 12 should be about 0,6-1,3 cm to yield a velocity of about 3 m per second which will force the char and slag particles to sink while preventing the nozzle 12 from plugging with solids contained in the water recycled to the conduit 26.
  • the angle of impingement 14 (Fig. 2) of the water and wetting agent from the nozzle 12 with respect to the surface 28 (Fig. 1) of the water bath 15 is advantageously about 30 degrees.
  • the nozzles 12 are directed inwardly (Fig. 1) towards the discharge opening 16 (Fig. 1) of the water bath 15 to facilitate separation and removal of the char and slag.
  • the selected configuration is installed, advantageously by screwing each selected nozzle 12 into a threaded orifice 17 as shown in Fig. 3.
  • the threaded orifice 17 provides the capability of replacing the nozzle 12 with another nozzle 18 having a smaller diameter and greater angle of impingement with respect to the horizontal as shown in Fig. 4 to yield a greater force for sinking the char and slag to the bottom of the water bath 15.
  • At least one fluid, advantageously water, which is recirculated from the water bath 15 and a wetting agent are supplied to the conduit 26 as shown in Fig. 5.
  • Jets of water are formed in a single row (Fig. 2) with nozzles directed inwardly at an angle of about 30 degrees from the horizontal.
  • the char and slag particles 11 (Fig. 1) which have fallen into the water bath 15 are agitated to set the particles in motion one against the other.
  • a coagulant can be added to the water supplied to the conduit 26.
  • the char and slag particles agglomerate and sink to the bottom of the water bath 15 and are subsequently removed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)
  • Coke Industry (AREA)
EP88202343A 1987-10-23 1988-10-19 Water bath wetting device Expired - Lifetime EP0318071B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11190287A 1987-10-23 1987-10-23
US111902 1987-10-23

Publications (2)

Publication Number Publication Date
EP0318071A1 EP0318071A1 (en) 1989-05-31
EP0318071B1 true EP0318071B1 (en) 1992-06-24

Family

ID=22341049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202343A Expired - Lifetime EP0318071B1 (en) 1987-10-23 1988-10-19 Water bath wetting device

Country Status (6)

Country Link
EP (1) EP0318071B1 (ja)
JP (1) JPH01135897A (ja)
CN (1) CN1014069B (ja)
AU (1) AU607010B2 (ja)
DE (1) DE3872357T2 (ja)
ZA (1) ZA887883B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041268B4 (de) * 2004-08-26 2007-10-04 Daimlerchrysler Ag Bremsflüssigkeitsbehälter für ein Fahrzeug

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623549Y2 (ja) * 1988-04-30 1994-06-22 石川島播磨重工業株式会社 石炭ガス化炉のスラグ排出装置
JPH086103B2 (ja) * 1989-12-12 1996-01-24 バブコツク日立株式会社 ガス化装置
DE4230124A1 (de) * 1992-09-09 1994-03-10 Babcock Energie Umwelt Vorrichtung zur Kühlung von heißen Gasen
US8382902B2 (en) * 2000-04-12 2013-02-26 Seagate Technology Llc Single disc vapor lubrication
AU2004293595B2 (en) * 2003-11-28 2008-02-14 Air Products And Chemicals, Inc. Spray ring and reactor vessel provided with such a spray ring and a method of wetting char and/or slag in a water bath
KR101160505B1 (ko) 2004-11-22 2012-06-28 쉘 인터내셔날 리써취 마트샤피지 비.브이. 연료 기화 장치
CN101547730B (zh) 2007-09-04 2012-02-01 国际壳牌研究有限公司 喷嘴总管以及利用这种布置结构的高温气体骤冷方法
US8012436B2 (en) 2007-09-04 2011-09-06 Shell Oil Company Quenching vessel
DE102008012732A1 (de) 2008-03-05 2009-09-10 Uhde Gmbh Vergasungsvorrichtung mit Schlackeabzug
WO2010023306A2 (en) 2008-09-01 2010-03-04 Shell Internationale Research Maatschappij B.V. Self cleaning arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014284B (en) * 1978-01-24 1982-07-21 British Gas Corp Removing slag
CH661054A5 (de) * 1981-10-23 1987-06-30 Sulzer Ag Gaskuehler an synthesegasgenerator.
AU5483886A (en) * 1985-03-18 1986-09-25 Dennis Michael Boyanich Boom spray

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041268B4 (de) * 2004-08-26 2007-10-04 Daimlerchrysler Ag Bremsflüssigkeitsbehälter für ein Fahrzeug

Also Published As

Publication number Publication date
EP0318071A1 (en) 1989-05-31
DE3872357D1 (de) 1992-07-30
AU2418488A (en) 1989-04-27
DE3872357T2 (de) 1993-01-21
ZA887883B (en) 1989-07-26
CN1032811A (zh) 1989-05-10
AU607010B2 (en) 1991-02-21
JPH01135897A (ja) 1989-05-29
CN1014069B (zh) 1991-09-25

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