EP0519230A1 - Pyrolysis heater - Google Patents

Pyrolysis heater Download PDF

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Publication number
EP0519230A1
EP0519230A1 EP92108658A EP92108658A EP0519230A1 EP 0519230 A1 EP0519230 A1 EP 0519230A1 EP 92108658 A EP92108658 A EP 92108658A EP 92108658 A EP92108658 A EP 92108658A EP 0519230 A1 EP0519230 A1 EP 0519230A1
Authority
EP
European Patent Office
Prior art keywords
tubes
heater
radiant section
section
radiant
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.)
Withdrawn
Application number
EP92108658A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jorge Moises Fernandez-Baujin
John Vincent Albano
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.)
Lummus Technology LLC
Original Assignee
Lummus Crest Inc
ABB Lummus Crest Inc
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 Lummus Crest Inc, ABB Lummus Crest Inc filed Critical Lummus Crest Inc
Publication of EP0519230A1 publication Critical patent/EP0519230A1/en
Withdrawn legal-status Critical Current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
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/18—Apparatus
    • C10G9/20—Tube furnaces

Definitions

  • This invention relates to an improved pyrolysis heater for the breaking apart of complex hydrocarbon molecules into simpler units.
  • a pyrolysis heater which includes a radiant heating section and a convection heating section, positioned above and offset from the radiant heating section, which is in gas flow communication with the radiant heating section.
  • the radiant heating section is provided with at least two rows of vertical tubes, with the tubes in each row being in a single plane which is perpendicular to a vertical plane through the longitudinal axis of the convection section.
  • the radiant section is provided with radiant burners positioned in the floor thereof, with each row of tubes having one row of burners on each side of the row.
  • the radiant section is preferably shaped in a manner such that the width of the radiant section is substantially equal to the length of the radiant section; i.e. , the width is from 80% to 120% of the length of the radiant section and preferably 90% to 110% of the length.
  • the height of the radiant section is also substantially equal to the length thereof whereby the radiant section has essentially a cube shape.
  • each row may be arranged to provide one or more passes for a feed introduced into the tubes (tubes which provide one or more passes are referred to as a "coil") and each row of tubes may include one or more coils.
  • two tubes in a single row are interconnected to form two vertical passes through the radiant section (a double pass coil) and such row can include a plurality of double pass coils.
  • three or more tubes may be interconnected to provide for three or more passes through the radiant heating section and each row may have one, two or more of such coils.
  • a plurality of tubes providing a first pass may be interconnected with a single tube forming a second pass.
  • the tubes in each row may have the same inside diameter or different inside diameters.
  • the coils in the radiant section are designed to provide for short residence time cracking to produce ethylene (residence time of less than 0.5 sec).
  • the residence time is not less than 0.07 second, with the coil preferably being designed for a residence time of no greater than 0.2 second.
  • the total length of a coil in the radiant section is generlaly at least 30 feet and generally does not exceed 80 feet and the coil may be formed from one or more tubes of a suitable length.
  • the overall length of the coil, the inside diameter and other conditions are coordinated to provide a short residence time as hereinabove described.
  • the height of the heater (direction parallel to tubes) is from about 20 to 45 feet, with the length and width of the heater having related dimensions, as hereinabove described.
  • the radiant section has at least sixteen coils therein (each coil can be formed from one, two or more tubes).
  • the vertical tubes used in teh pyrolysis heater generally have a nominal inside diameter of from 1" to 4" with 1" to 2" being preferred for theinlet tubes.
  • the inside of the tubes may be smooth or may include fins.
  • the outlet tubes of the coil can have larger diameters.
  • the tubes when arranged into coils for providing multiple passes can be arranged in a manner such that a plurality of tubes are each provided with feed, with such plurality of tubes providing a single pass through the radiant section and exiting into a manifold conected to a single tube of a larger diameter for providing a second pass through the radiant section.
  • the coil outlets are preferably connected to a suitable transfer line exchanger for rapidly cooling the effluent to below cracking temperatures.
  • the temperature of the effluent withdrawn from the coils is in the order of 1400°F to 1750°F.
  • the feed to the coils is generally diluted with steam.
  • a pyrolysis heater generally designated as 10 comprised of a radiant section, generally designated as 11 and a convection section 12 above and laterally offset from radiant section 11 with the interior of the radiant section 11 being in gas flow communication with the convection section 12 through a horizontal passage 13.
  • the radiant section 11 includes a plurality of rows of vertical tubes 14, with each row of tubes 14 being in a single plane substantially perpendicular to a plane through the longitudinal axis of the convection section 12. As shown in Figure 1 there are four rows of vertical tubes 14.
  • the radiant section includes a plurality of radiant burners 15 which are positioned in the floor of the radiant section 11.
  • the burners 15 are arranged in rows parallel to the rows of vertical tubes 14, and each row of tubes 14 is provided with two rows of floor burners 15 with one row of burners 15 being on each side of a row of vertical tubes 14.
  • the burners on each side of the vertical tubes are preferably spaced from the vertical tubes by the same distance.
  • the vertical tubes 14 in each row are interconnected to provide radiant coils for pyrolyzing a feed.
  • the tubes 14 in each row are arranged to provide two passes for each feed stream of hydrocarbon to be pyrolyzed. More particularly, a plurality of tubes 14a, in one row are connected to a horizontal manifold 21 which is connected to a vertical tube 14b having an inside diameter greater than the tubes 14a. The upper ends of tubes 14a are connected to an inlet manifold 22 for providing a hydrocarbon feed to the tubes 14a and the tops of tubes 14b are connected to a transfer line exchanger 23 for receiving pyrolysis effluent.
  • hydrocarbon to be pyrolyzed is introduced into the tops of tubes 14a, passes downwardly through tubes 14a into manifold 21 and then upwardly through tubes 14b for introduction into a transfer line exchanger 23.
  • a feed to be pyrolyzed may be preheated in convection tubes 24 located in convection section 12, with the preheated feed being introduced into tubes 14a through manifolds 22.
  • a single row of vertical tubes may be divided into two sets of tubes, with each set forming one coil.
  • Each coil is comprised of twelve tubes 14a providing a first pass, with each of the twelve tubes 14a being connected to a single tube 14b which provides the second pass.
  • the height, length and width of the radiant section 11 are equal to each other.
  • the heater is shown with a single radiant section the heater could be constructed with two radiant sections, each of which is in gas flow communication with the convection section.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP92108658A 1991-06-17 1992-05-22 Pyrolysis heater Withdrawn EP0519230A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71623091A 1991-06-17 1991-06-17
US716230 1991-06-17

Publications (1)

Publication Number Publication Date
EP0519230A1 true EP0519230A1 (en) 1992-12-23

Family

ID=24877251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92108658A Withdrawn EP0519230A1 (en) 1991-06-17 1992-05-22 Pyrolysis heater

Country Status (4)

Country Link
EP (1) EP0519230A1 (ja)
JP (1) JPH0613710B2 (ja)
KR (1) KR950005680B1 (ja)
CN (1) CN1026120C (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760467A1 (fr) * 1997-03-04 1998-09-11 Procedes Petroliers Petrochim Four tubulaire a radiation a deflecteurs de flamme pour la decomposition thermique d'hydrocarbures en presence de vapeur d'eau
FR2761371A1 (fr) * 1997-03-28 1998-10-02 Procedes Petroliers Petrochim Four tubulaire a radiation multi-zones a ecoulement de gaz de combustion uniformise pour la decomposition thermique d'hydrocarbures en presence de vapeur d'eau
WO2002100982A1 (en) * 2001-06-13 2002-12-19 Abb Lummus Global Inc. Pyrolysis heater with paired burner zoned firing system
EP1295930A1 (en) * 2001-09-19 2003-03-26 China Petroleum & Chemical Corporation Pyrolysis furnace with new type radiant tubes arrangement and method of its operation and usage
WO2003087268A2 (en) * 2002-04-10 2003-10-23 Abb Lummus Global Inc. Cracking furnace with more uniform heating
EP1417098A1 (en) * 2001-04-24 2004-05-12 ABB Lummus Global Inc. Pyrolysis heater
US8490581B2 (en) 2006-06-15 2013-07-23 Exxonmobil Research And Engineering Company Advanced fired heater unit for use in refinery and petro-chemical applications
EP2949728A1 (en) 2014-05-28 2015-12-02 Wison Engineering Ltd. Ethylene cracking furnace

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010012562A (ko) * 1997-05-13 2001-02-15 롱스테펜엘. 복사 난방 튜브를 가지는 열분해용 고로
CN101723784B (zh) 2008-10-16 2012-12-26 中国石油化工股份有限公司 一种乙烯裂解炉
KR101896028B1 (ko) 2011-07-28 2018-09-06 차이나 페트로리움 앤드 케미컬 코포레이션 에틸렌 분해로
CN104140841B (zh) * 2013-05-07 2016-05-11 中国石化工程建设有限公司 一种乙烯裂解炉
CN110835547A (zh) * 2018-08-16 2020-02-25 中国石化工程建设有限公司 乙烯裂解炉

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274978A (en) * 1964-02-24 1966-09-27 Lummus Co Vertical tube fluid heater
GB1194733A (en) * 1966-08-26 1970-06-10 Pullman Inc Furnace for Heating Reactant Fluids
US3630850A (en) * 1968-12-02 1971-12-28 Shell Oil Co Cracking furnace with burners engaging mirror image coiled tubes
EP0252355A1 (fr) * 1986-06-25 1988-01-13 Naphtachimie S.A. Procédé et four de vapocraquage d'hydrocarbures destinés à la fabrication d'oléfines et de dioléfines
EP0252356A1 (fr) * 1986-06-25 1988-01-13 Naphtachimie S.A. Procédé et four de vapocraquage d'hydrocarbures destines à la fabrication d'oléfines et de dioléfines
EP0305799A1 (en) * 1987-09-01 1989-03-08 Abb Lummus Crest Inc. Pyrolysis heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274978A (en) * 1964-02-24 1966-09-27 Lummus Co Vertical tube fluid heater
GB1194733A (en) * 1966-08-26 1970-06-10 Pullman Inc Furnace for Heating Reactant Fluids
US3630850A (en) * 1968-12-02 1971-12-28 Shell Oil Co Cracking furnace with burners engaging mirror image coiled tubes
EP0252355A1 (fr) * 1986-06-25 1988-01-13 Naphtachimie S.A. Procédé et four de vapocraquage d'hydrocarbures destinés à la fabrication d'oléfines et de dioléfines
EP0252356A1 (fr) * 1986-06-25 1988-01-13 Naphtachimie S.A. Procédé et four de vapocraquage d'hydrocarbures destines à la fabrication d'oléfines et de dioléfines
EP0305799A1 (en) * 1987-09-01 1989-03-08 Abb Lummus Crest Inc. Pyrolysis heater

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760467A1 (fr) * 1997-03-04 1998-09-11 Procedes Petroliers Petrochim Four tubulaire a radiation a deflecteurs de flamme pour la decomposition thermique d'hydrocarbures en presence de vapeur d'eau
FR2761371A1 (fr) * 1997-03-28 1998-10-02 Procedes Petroliers Petrochim Four tubulaire a radiation multi-zones a ecoulement de gaz de combustion uniformise pour la decomposition thermique d'hydrocarbures en presence de vapeur d'eau
EP1417098A1 (en) * 2001-04-24 2004-05-12 ABB Lummus Global Inc. Pyrolysis heater
EP1417098A4 (en) * 2001-04-24 2006-11-29 Abb Lummus Global Inc PYROLYSEHEIZVORRICHTUNG
WO2002100982A1 (en) * 2001-06-13 2002-12-19 Abb Lummus Global Inc. Pyrolysis heater with paired burner zoned firing system
EP1295930A1 (en) * 2001-09-19 2003-03-26 China Petroleum & Chemical Corporation Pyrolysis furnace with new type radiant tubes arrangement and method of its operation and usage
WO2003087268A2 (en) * 2002-04-10 2003-10-23 Abb Lummus Global Inc. Cracking furnace with more uniform heating
WO2003087268A3 (en) * 2002-04-10 2003-11-20 Abb Lummus Global Inc Cracking furnace with more uniform heating
US7004085B2 (en) 2002-04-10 2006-02-28 Abb Lummus Global Inc. Cracking furnace with more uniform heating
US8490581B2 (en) 2006-06-15 2013-07-23 Exxonmobil Research And Engineering Company Advanced fired heater unit for use in refinery and petro-chemical applications
EP2949728A1 (en) 2014-05-28 2015-12-02 Wison Engineering Ltd. Ethylene cracking furnace

Also Published As

Publication number Publication date
JPH0613710B2 (ja) 1994-02-23
CN1067669A (zh) 1993-01-06
CN1026120C (zh) 1994-10-05
KR930000654A (ko) 1993-01-15
KR950005680B1 (ko) 1995-05-29
JPH05186779A (ja) 1993-07-27

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