US3917516A - Coke-cooling apparatus - Google Patents

Coke-cooling apparatus Download PDF

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Publication number
US3917516A
US3917516A US453547A US45354774A US3917516A US 3917516 A US3917516 A US 3917516A US 453547 A US453547 A US 453547A US 45354774 A US45354774 A US 45354774A US 3917516 A US3917516 A US 3917516A
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US
United States
Prior art keywords
drum
pockets
cooling
apparatus defined
coke
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
US453547A
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English (en)
Inventor
Hans Waldmann
Wilfried Schwarz
Manfred Bergfeld
Hans Joachim Laupitz
Klaus Muller
Thaddeus J Oleszko
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Application granted granted Critical
Publication of US3917516A publication Critical patent/US3917516A/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
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • C10B39/10—Cooling or quenching coke combined with agitating means, e.g. rotating tables or drums
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • C10B39/02—Dry cooling outside the oven

Definitions

  • COKE-COOLING APPARATUS Inventors: Hans Waldmann, Trostberg;
  • the present invention relates to a coke-cooling apparatus and, more particularly, to an apparatus for cooling bulk material, especially coke, by indirect heat exchange with a coolant such as water.
  • the drum is rotatable in a bath of water and it is formed with tubular pockets which increase the surface area in contact with the coke and the water and entrain the water from the bath so that it flows substantially over the entire external surface of the rotating drum.
  • the rotor drum or shell (also generically described in the art as the socalled rotor) is of polygonal cross-section, usually with eight sides.
  • the shell Because of the high temperatures of the coke, the shell is subjected to substantial temperature differentials not only between its exterior and interior but from one end to the other, which causes rapid wear and deterioration of the shell walls and the walls of the tubular pocket across which the coke must pass.
  • the thermal stresses limit the life of the apparatus and replacement of the drum is relatively expensive and results in significant downtime of the system. Consequently, continuous operation of the apparatus is seldom possible.
  • Another object of the invention is to provide a coke cooler of the general type described previously which has a longer useful life and a greater ratio of operating time to downtime.
  • Still another object of the invention is to provide a coke cooler of relatively low cost but improved efficiency.
  • a cooler for bulk material especially coke
  • a cooler for bulk material which comprises an outer housing or vessel adapted to receive a bath of liquid coolant, preferably water, and a drum, rotor or shell of generally prismatic or polygonal-cross-sectional configuration in this vessel and rotatable about a horizontal axis, the drum having an inlet end into which the bulk material is charged and an outlet end from which the cooled material is discharged.
  • the rotor or drum comprises a sheet-metal shell of progressively increasing wall thickness from an intermediate region along its length toward the inlet and outlet ends.
  • the rotor, drum or shell is provided with a multiplicity of inwardly extending tubular pockets of sheet-metal, e.g., sheet steel, which pick up, conduct and distribute the coolant over the periphery of the drum and increase the cooling effectiveness, the wall thicknesses of these tubular pockets likewise increasing progressively from the intermediate region of the drum toward its ends.
  • sheet-metal e.g., sheet steel
  • the invention has been found to be surprisingly ef fective in increasing the useful life of the drum or rotor because the increased material thicknesses towards the ends compensate for the increased wear in these regions.
  • the wear at the inlet end at which the glowing coke is introduced at an extremely high temperature, e.g., 1,400C is proportionally higher because of the thermal stress and the corrosive effect of the hot bulk material than at "the intermediate regions in which the coke has been cooled to a significant degree.
  • the abrasive character of the material is significantly increased over its abrasive effect at the temperatures of the intermediate region or zone so that the increased material thicknesses at this end likewise compensate for material wear.
  • the temperature of the coke may be relatively low, e.g., C, although the hardness and abrasive character of the coke may be several times greater than that of the coke at the higher temperatures upstream in the drum.
  • the useful life of the drum is increased since wear to failure occurs uniformly across the drum length.
  • the smaller interpocket distances (closer spacing) and the wider construction of the pockets makes for a greater density of heat exchange area per unit of axial length of the drum at the inlet end and hence an increased heat exchange capacity at the regions at which the temperature is higher. Furthermore, the low height of the pockets in the region of the inlet insures a more uniform distribution of the bulk material over the interior of the drum and a more complete immersion of the pockets in the water bath, again increasing the heat exchange properties of the drum in this region.
  • tubular cooling pockets within thedrum come into direct contact with hot or cooled coke and sufficient or abrasive hard coke, it has been found to be advantageous to protect the surfaces of the cooling pockets turned toward the axis of the drum with protective aprons or copings.
  • the latter may be composed of steel and may be angles or steel plates which, to avoid the effect of thermal stress, are secured at single points in the middle of each plate section to the cooling pocket.
  • the inlet of the drum as a conically widening shell which may be formed with a plurality of cooling pockets which also act to promote the advance of the material into the interior of the drum mentioned as do advance in a conventional bulk-material treatment device.
  • FIG. 1 is a diagrammatic vertical section wherein, because of the small size of the drawing, wall thicknesses have not been shown;
  • FIG. 2 is a section taken along the line IIII of FIG. 1 and drawn to an enlarged scale;
  • FIG. 3 is a detail cross-section view through a portion of the drum of FIG. 1 showing the relationships of the wall thickness and cooling pockets to the drum in greater detail;
  • FIG. 4 is an elevational view of the portion of the drum, drawn to a larger scale than FIGS. 1 and 2.
  • the coke cooler shown in the drawing comprises a vessel 1 for water bath 3 receiving a rotor or drum 2 of octagonal cross-section (see FIG. 2).
  • the rotor or drum 2 dips into the water 3 to a substantial extent, i.e., the greater part of the radius of the drum which may also be cylindrical or of another polygonal cross-section as desired.
  • the rotor or drum 2 comprises an outer shell 6 having a horizontal axis and formed at one end with a discharge duct 6 and the opposite end with a conical inlet duct frustoconically diverging in the direction of the drum 2.
  • This duct 5 there are provided a plurality of chordal cooling pockets 7 which permit intensive cooling by contact with the water bath and limit the formation of thermal stresses and cracking between the drum and the inlet duct 5.
  • the inlet duct 5 and the outlet duct 6 can be flanged as shown for the duct 5 or welded as shown in duct 6, to the drum.
  • a water cooled inlet chute 8 which leads the coke from the coke furnace into the inlet duct, the chute representing inlet means, etc., according to the principles of the present invention.
  • the discharge duct 6 is provided with discharge means for drawing the bulk material from the system in the form of a conveyor wall which opens into a discharge chamber or hopper 9 which may be composed in whole or in part of wire-reinforced glass and is provided with an automatically operable emergency door .11 for relieving pressure within the system, e.g., in the case of explosion or the development of a gas condition.
  • the door 11 may by hydraulically operable.
  • the level of the water bath 3 can be raised and, when a reduced heat exchange capacity is desired, the water bath level may be lowered.
  • the rotor or drum 2 is rotatably sealed relative to the vessel 1 with sealing rings 12 or 13 of rubber or other material which permits rotation but prevents escape of water.
  • the drum 2 is formed with a multiplicity of tubular cooling pockets 14 which extend along chords of the device and open the opposite walls of the drum.
  • the pockets thus lie transversely to the drum axis and can be sealed along the inner walls of the drum.
  • the sheet-metal thickness of the shell 4 and of the cooling pockets 14 increase from an intermediate region of the rotor 2 in the direction of the inlet 15 and the outlet 16.
  • the height of the cooling pockets 14 perpendicular to the rotor axis and the spacing of the cooling pockets 14 from one another increase from the inlet to the outlet while the width of the cooling pockets decreases from the inlet to the outlet.
  • the open .ends of the cooling pockets l4 lie at the surface of the shell 4 and are provided with slidable covers 17 which permit control of the water flow through the pockets during rotation.
  • the arched side of the cooling pockets l4 turned toward the rotor axis are protected by angle members 18 of steel weld only at central locations to the cooling pockets.
  • the welding locations are represented by dots 18 in FIG. 2.
  • a supply device 19 for promoting heat exchange and thereby reducing thermal stress while increasing the throughput of the apparatus.
  • a dephlegmator 20 is provided in the vent to the vessel 1 for condensation of water from the gas phase above the water bath.
  • the glowing bulk product is introduced through the inlet chute 8 and the inlet duct 5 to pass over the cooling pockets in the main portion of the drum 2 and subject the coke to indirect heat exchange with the water bath.
  • the water passes through the pockets l4 and reduces the temperature of the coke so that cooled coke is withdrawn via the discharge duct 6 and the worm 10 to collect in the hopper 9.
  • the rate of operation of the worm 10 controls the level of coke within the drum.
  • FIGS. 3 and 4 show the features of the invention in somewhat greater detail. From FIG. 3, for example, it will be apparent that the thickness of the shell 4 of the drum 2 decreases from a thickness T to a thickness t from the inlet end toward an intermediate region and a corresponding decrease in thickness takes place from the discharge end to the intermediate region. Described otherwise, the wall thickness of the steel shell 4 increases from the thickness t at an intermediate location L to a thickness T toward each end.
  • the cooling pockets or tubes 14 which are welded at 14' to the wall 4 and along their peripheries 14" to the adjacent wall 4 of the shell, have widths measured parallel to the axis of rotation of the drum which decrease from a width W to, say a width w progressively from the inlet side to the discharge side of the drum.
  • the height of the cooling pockets or tubes 14, as measured radially with respect to the axis of rotation of the drum may increase from a height h to the height H, etc., progressively from the inlet side to the discharge side of the drum and the wall thicknesses of the pockets may decrease from the thickness 1 toward each end.
  • the thicknesses of the protective angle members 18 may likewise decrease from a thickness t" to a thickness T" from the intermediate region toward each end of the drum.
  • the single weld point for each flange 18a, 18b of the protective members 18 is represented at 18 in FIG. 3.
  • FIG. 4 was the opening at which the pockets communicate with the exterior in the walls 4' and 4" of the drum 4. These openings can be blocked completely or partly by the slidable plates 17 which are guided in channels 17' parallel to the axis of rotation of the drum and are movable as represented by the arrows to completely or partially overlie these openings.
  • the distance between the pockets 14 may increase from a relatively small distance d at the inlet end to larger distances D, etc., toward the discharge end of the drum (FIG. 3).
  • the discharge worm may be vertically adjustable, i.e., of adjustable height, if desired to control the level of material in said drum.
  • a coke-cooling apparatus for bulk material comprising a vessel forming a water bath, an elongated drum rotatable about a horizontal axis in said vessel and dipping into said water bath; the improvement comprising a multiplicity of tubular cooling pockets formed on the wall of said drums, said drum having a sheet-metal wall, the wall thickness of said drum and said cooling pockets increasing progressively from an intermediate region along the length of said drum toward the opposite ends thereof.
  • cooling pockets are of increasing radial dimension as measured with respect to the axis of rotation of said drum and increasing inter-pocket spacing parallel to 6 the axis of the drum from an inlet end thereof toward a discharge end thereof, the width of said pockets as measured parallel to said axis decreasing from said inlet end toward said discharge end.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Blinds (AREA)
US453547A 1973-03-26 1974-03-21 Coke-cooling apparatus Expired - Lifetime US3917516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2315024A DE2315024C3 (de) 1973-03-26 1973-03-26 Kokskühler

Publications (1)

Publication Number Publication Date
US3917516A true US3917516A (en) 1975-11-04

Family

ID=5875960

Family Applications (1)

Application Number Title Priority Date Filing Date
US453547A Expired - Lifetime US3917516A (en) 1973-03-26 1974-03-21 Coke-cooling apparatus

Country Status (8)

Country Link
US (1) US3917516A (no)
JP (1) JPS5726313B2 (no)
CA (1) CA1020484A (no)
DE (1) DE2315024C3 (no)
FR (1) FR2223445B1 (no)
GB (1) GB1469964A (no)
NO (1) NO741050L (no)
SU (1) SU640666A3 (no)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557804A (en) * 1984-05-18 1985-12-10 Triten Corporation Coke cooler
US4667731A (en) * 1985-09-13 1987-05-26 Triten Corporation Coke cooler
DE3633462A1 (de) * 1986-09-29 1988-04-14 Triten Corp Kokskuehler
US4747913A (en) * 1986-10-31 1988-05-31 Atlantic Richfield Company Cooling apparatus for granular coke material
US5622604A (en) * 1995-02-27 1997-04-22 Atlantic Richfield Company Coke cooling apparatus
US5795445A (en) * 1996-07-10 1998-08-18 Citgo Petroleum Corporation Method of controlling the quench of coke in a coke drum
US5827403A (en) * 1996-07-10 1998-10-27 Citgo Petroleum Corporation Method of designing and manufacturing a delayed coker drum
US6039844A (en) * 1998-10-09 2000-03-21 Citgo Petroleum Corporation Containment system for coke drums
US6132560A (en) * 1998-09-11 2000-10-17 Atlantic Richfield Company Rotary drum cooler having adjustable lifters
US6143137A (en) * 1998-09-11 2000-11-07 Atlantic Richfield Company Cooling pocket for a rotary drum cooler having a flexible vent pipe assembly
US20100126033A1 (en) * 2006-04-21 2010-05-27 Osvaldo Ricardo Haurie Cylindrical dryer having conduits provided within a plurality of holding plates
CN106047379A (zh) * 2016-06-30 2016-10-26 中国重型机械研究院股份公司 一种高温粉焦干熄焦系统及方法
CN109423313A (zh) * 2017-08-29 2019-03-05 五冶集团上海有限公司 一种干熄炉炉壳的改造方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8801377D0 (sv) * 1988-04-14 1988-04-14 Productcontrol Ltd Foredling av organiskt material
DE19525993A1 (de) * 1995-07-18 1997-01-23 Siemens Ag Kühlvorrichtung
DE102008057360A1 (de) 2008-11-14 2010-05-20 Linde Aktiengesellschaft Drehtrommelwärmeaustauscher mit Wärmeaustauschtaschen
DE102009030730A1 (de) 2009-06-26 2010-12-30 Linde Ag Drehtrommelwärmeaustauscher mit Wärmeaustauschtaschen
ITMI20130826A1 (it) * 2013-05-21 2014-11-22 Ambiente E Nutrizione Srl Procedimento per lo spegnimento di coke

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1769412A (en) * 1928-06-09 1930-07-01 Traylor Engineering & Mfg Co Rotary tube cooler
US1886302A (en) * 1931-05-23 1932-11-01 Blue Ridge Glass Corp Apparatus for rolling glass sheets
US2785115A (en) * 1955-04-04 1957-03-12 Smidth & Co As F L Rotary kiln with integral cooler
US3780888A (en) * 1970-10-22 1973-12-25 Koppers Gmbh Heinrich Material transfer apparatus for a rotary drum

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US605937A (en) * 1898-06-21 Elevator
SU412133A1 (ru) * 1970-05-04 1974-01-25 В. А. Вознесенский, В. Я. Кошкин, С. В. Селезнев , Р. М. Тохтасьев Барабан лебедки
KR890002051B1 (ko) * 1984-03-16 1989-06-15 미쓰비시전기주식회사 엘리베이터의 권상장치
JPH07196288A (ja) * 1993-12-28 1995-08-01 Japan Steel Works Ltd:The 巻取案内装置
CA2227801A1 (en) * 1997-03-15 1998-09-15 Theodor Kromer Gmbh Unternehmensgruppe Unican Device for equalizing weight of a hanging load
JP3238351B2 (ja) * 1997-06-17 2001-12-10 三菱重工業株式会社 ロープドラム
DE10312847A1 (de) * 2003-03-21 2004-09-30 Strödter Handhabungstechnik GmbH Doppelseilbalancer
CN201220899Y (zh) * 2008-06-17 2009-04-15 卫华集团有限公司 一种螺纹卷筒

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1769412A (en) * 1928-06-09 1930-07-01 Traylor Engineering & Mfg Co Rotary tube cooler
US1886302A (en) * 1931-05-23 1932-11-01 Blue Ridge Glass Corp Apparatus for rolling glass sheets
US2785115A (en) * 1955-04-04 1957-03-12 Smidth & Co As F L Rotary kiln with integral cooler
US3780888A (en) * 1970-10-22 1973-12-25 Koppers Gmbh Heinrich Material transfer apparatus for a rotary drum

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557804A (en) * 1984-05-18 1985-12-10 Triten Corporation Coke cooler
US4667731A (en) * 1985-09-13 1987-05-26 Triten Corporation Coke cooler
DE3633462A1 (de) * 1986-09-29 1988-04-14 Triten Corp Kokskuehler
US4747913A (en) * 1986-10-31 1988-05-31 Atlantic Richfield Company Cooling apparatus for granular coke material
US5622604A (en) * 1995-02-27 1997-04-22 Atlantic Richfield Company Coke cooling apparatus
US5827403A (en) * 1996-07-10 1998-10-27 Citgo Petroleum Corporation Method of designing and manufacturing a delayed coker drum
US5795445A (en) * 1996-07-10 1998-08-18 Citgo Petroleum Corporation Method of controlling the quench of coke in a coke drum
US6132560A (en) * 1998-09-11 2000-10-17 Atlantic Richfield Company Rotary drum cooler having adjustable lifters
US6143137A (en) * 1998-09-11 2000-11-07 Atlantic Richfield Company Cooling pocket for a rotary drum cooler having a flexible vent pipe assembly
US6039844A (en) * 1998-10-09 2000-03-21 Citgo Petroleum Corporation Containment system for coke drums
US20100126033A1 (en) * 2006-04-21 2010-05-27 Osvaldo Ricardo Haurie Cylindrical dryer having conduits provided within a plurality of holding plates
US8127462B2 (en) * 2006-04-21 2012-03-06 Osvaldo Ricardo Haurie Cylindrical dryer having conduits provided within a plurality of holding plates
CN106047379A (zh) * 2016-06-30 2016-10-26 中国重型机械研究院股份公司 一种高温粉焦干熄焦系统及方法
CN109423313A (zh) * 2017-08-29 2019-03-05 五冶集团上海有限公司 一种干熄炉炉壳的改造方法

Also Published As

Publication number Publication date
SU640666A3 (ru) 1978-12-30
DE2315024A1 (de) 1974-10-17
NO135069B (no) 1976-10-25
GB1469964A (en) 1977-04-14
DE2315024C3 (de) 1979-09-20
NO741050L (no) 1974-09-27
NO135069C (no) 1977-02-02
JPS5726313B2 (no) 1982-06-03
FR2223445B1 (no) 1978-06-02
DE2315024B2 (de) 1979-01-25
FR2223445A1 (no) 1974-10-25
CA1020484A (en) 1977-11-08
JPS5069101A (no) 1975-06-09

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