CA2489876A1 - Converting mist flow to annular flow in thermal cracking application - Google Patents

Converting mist flow to annular flow in thermal cracking application Download PDF

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Publication number
CA2489876A1
CA2489876A1 CA002489876A CA2489876A CA2489876A1 CA 2489876 A1 CA2489876 A1 CA 2489876A1 CA 002489876 A CA002489876 A CA 002489876A CA 2489876 A CA2489876 A CA 2489876A CA 2489876 A1 CA2489876 A1 CA 2489876A1
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Canada
Prior art keywords
flash drum
mist
mist stream
flow
steam
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Granted
Application number
CA002489876A
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French (fr)
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CA2489876C (en
Inventor
Richard C. Stell
Arthur R. Dinicolantonio
Jennifer L. Bancroft
George Stephens
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ExxonMobil Chemical Patents Inc
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Individual
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Publication date
Priority claimed from US10/188,901 external-priority patent/US7090765B2/en
Priority claimed from US10/188,461 external-priority patent/US7138047B2/en
Priority claimed from US10/189,618 external-priority patent/US7097758B2/en
Application filed by Individual filed Critical Individual
Publication of CA2489876A1 publication Critical patent/CA2489876A1/en
Application granted granted Critical
Publication of CA2489876C publication Critical patent/CA2489876C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • 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
    • 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
    • C10G9/34—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert preheated fluids, e.g. with molten metals or salts
    • C10G9/36—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert preheated fluids, e.g. with molten metals or salts with heated gases or vapours
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1022—Fischer-Tropsch products
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1033—Oil well production fluids
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/104—Light gasoline having a boiling range of about 20 - 100 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1044—Heavy gasoline or naphtha having a boiling range of about 100 - 180 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1048—Middle distillates
    • C10G2300/1051—Kerosene having a boiling range of about 180 - 230 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1048—Middle distillates
    • C10G2300/1055—Diesel having a boiling range of about 230 - 330 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1048—Middle distillates
    • C10G2300/1059—Gasoil having a boiling range of about 330 - 427 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/107—Atmospheric residues having a boiling point of at least about 538 °C
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1074—Vacuum distillates
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1077—Vacuum residues
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/30—Physical properties of feedstocks or products
    • C10G2300/301—Boiling range
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/80—Additives
    • C10G2300/805—Water
    • C10G2300/807—Steam
    • 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
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/20—C2-C4 olefins

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Lubricants (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process to increase the non-volatile removal efficiency in a flash drum in the steam cracking system. The gas flow from the convection section is converted from mist flow to annular flow before entering the flash drum to increase the removal efficiency. The conversion of gas flow from mist flow to annular flow is accomplished by subjecting the gas flow first to at least one expander and then to bends of various degrees and force the flow to change directions at least once. The change of gas flow from mist to annular helps coalesce fine liquid droplets and thus being removed from the vapor phase.

Claims (26)

1. A process for treating a heavy hydrocarbon feedstock comprising:
preheating the heavy hydrocarbon feedstock, optionally comprising steam, in the convection section of a steam cracking furnace to vaporize a portion of the feedstock and form a mist stream comprising liquid droplets comprising non-volatile hydrocarbon in volatile hydrocarbon vapor, optionally with steam, the mist stream upon leaving the convection section having a flow velocity and a flow direction, treating the mist stream to coalesce the liquid droplets, the treating comprising first reducing the flow velocity followed by changing the flow direction separating at least a portion of the liquid droplets from the vapor in a flash drum to form a vapor phase and a liquid phase, and feeding the vapor phase to the steam cracking furnace.
2. The process of claim 1 further comprising feeding the vapor phase to a lower convection section and radiant section of the steam cracking furnace.
3. The process of claim 1 or 2, wherein the heavy hydrocarbon feedstock comprises one or more of steam cracked gas oil and residues, gas oils, heating oil, jet fuel, diesel, kerosene, gasoline, coker naphtha, steam cracked naphtha, catalytically cracked naphtha, hydrocrackate, reformate, raffinate reformate, Fischer-Tropsch liquids, Fischer-Tropsch gases, natural gasoline, distillate, virgin naphtha, crude oil, atmospheric pipestill bottoms, vacuum pipestill streams including bottoms, wide boiling range naphtha to gas oil condensates, heavy non-virgin hydrocarbon streams from refineries, vacuum gas oils, heavy gas oil, naphtha contaminated with crude, atmospheric resid, heavy residium, C4's/residue admixture, and naphtha/residue admixture.
4. The process according to claim 1, 2, or 3, wherein the heavy hydrocarbon feedstock comprises low sulfur waxy resid.
5. The process according to any preceding claim, wherein 60 to 80 percent of the heavy hydrocarbon feedstock boils below 590°C (1100°F).
6. The process of any preceding claim, wherein the flow velocity of the mist stream is reduced by at least 40%.
7. The process of any preceding claim, wherein the flow velocity of the mist stream is reduced to less than 60 feet/second (18 m/s).
8. The process of any preceding claim, wherein the treating comprises first reducing the flow velocity of the mist stream to less than 60 ft/sec (18 m/s) and then subjecting the mist stream to at least one centrifugal force such that the liquid droplets coalesce.
9. The process of any preceding claim, wherein droplets in the mist stream are substantially coalesced in less than 25 inside pipe diameters.
10. The process of any preceding claim, wherein droplets in the mist stream are substantially coalesced in less than 4 inside pipe diameters.
11. The process of any preceding claim, wherein the mist stream flows through a flow path that comprises first at least one expander and at least one bend.
12. The process of any preceding claim, wherein treating converts the mist into an annular flow stream.
13. The process of any preceding claim, wherein the flash drum achieves a non-volatile separation efficiency of at least 85%.
14. The process of any preceding claim, wherein the flash drum achieves a non-volatile separation efficiency of at least 95%.
15. The process of any preceding claim, wherein the flash drum achieves a non-volatile separation efficiency of at least 99%.
16. The process of any preceding claim, wherein the flash drum achieves a non-volatile separation efficiency of at least 99.8%.
17. The process of any preceding claim, wherein the mist stream is in the mist flow regime and converted into an annular flow regime in less than 25 pipe diameters.
18. The process of any preceding claim, wherein the mist stream is in the mist flow regime and converted into an annular flow regime in less than 4 pipe diameters.
19. The process of any preceding claim, wherein the mist stream flows through a flow path that comprises multiple bends.
20. The process of claim 19, wherein at least one bend is at least 45 degrees.
21. The process of claim 19 or 20, wherein at least one bend is at least 90 degrees.
22. The process of claim 19, 20, or 21, wherein at least one bend is 180 degrees.
23. A process for treating a hydrocarbon feedstock comprising: preheating hydrocarbon feedstock, optionally comprising steam, in the convection section of a thermal cracking furnace to vaporize a portion of the feedstock and form a mist stream comprising liquid droplets comprising hydrocarbon in hydrocarbon vapor, optionally with steam, said mist stream upon leaving the convection section, treating the mist stream to coalesce the liquid droplets, separating at least a portion of the liquid droplets from the vapor in a flash to form a vapor phase and a liquid phase, and feeding the vapor phase to the thermal cracking furnace, wherein the flash comprises introducing the mist stream containing coalesced liquid droplets into a flash drum, removing the vapor phase from at least one upper flash drum outlet and removing the liquid phase from at least one lower flash drum outlet.
24. The process of claim 23, wherein the mist stream is tangentially introduced into the flash drum through at least one tangential flash drum inlet.
25. The process of claim 23 or 24, wherein the liquid phase is removed from at least one lower side flash drum outlet and one flash drum bottom outlet.
26. The process of claim 23, 24, or 25, wherein the flash drum has an annular baffle installed inside the flash drum effective to reduce the portion of the liquid phase flowing downwards in the flash drum from being entrained in the vapor phase.
CA2489876A 2002-07-03 2003-06-27 Converting mist flow to annular flow in thermal cracking application Expired - Fee Related CA2489876C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US10/188,901 US7090765B2 (en) 2002-07-03 2002-07-03 Process for cracking hydrocarbon feed with water substitution
US10/188,901 2002-07-03
US10/188,461 US7138047B2 (en) 2002-07-03 2002-07-03 Process for steam cracking heavy hydrocarbon feedstocks
US10/189,618 2002-07-03
US10/189,618 US7097758B2 (en) 2002-07-03 2002-07-03 Converting mist flow to annular flow in thermal cracking application
US10/188,461 2002-07-03
PCT/US2003/020375 WO2004005431A1 (en) 2002-07-03 2003-06-27 Converting mist flow to annular flow in thermal cracking application

Publications (2)

Publication Number Publication Date
CA2489876A1 true CA2489876A1 (en) 2004-01-15
CA2489876C CA2489876C (en) 2011-04-19

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ID=30119026

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2489888A Expired - Fee Related CA2489888C (en) 2002-07-03 2003-06-27 Process for cracking hydrocarbon feed with water substitution
CA2490403A Expired - Fee Related CA2490403C (en) 2002-07-03 2003-06-27 Process for steam cracking heavy hydrocarbon feedstocks
CA2489876A Expired - Fee Related CA2489876C (en) 2002-07-03 2003-06-27 Converting mist flow to annular flow in thermal cracking application

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Application Number Title Priority Date Filing Date
CA2489888A Expired - Fee Related CA2489888C (en) 2002-07-03 2003-06-27 Process for cracking hydrocarbon feed with water substitution
CA2490403A Expired - Fee Related CA2490403C (en) 2002-07-03 2003-06-27 Process for steam cracking heavy hydrocarbon feedstocks

Country Status (9)

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EP (3) EP1523534B1 (en)
JP (3) JP4387301B2 (en)
KR (2) KR100945121B1 (en)
CN (3) CN1281715C (en)
AT (1) ATE396244T1 (en)
AU (3) AU2003247755A1 (en)
CA (3) CA2489888C (en)
SG (1) SG177003A1 (en)
WO (3) WO2004005432A1 (en)

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US7138047B2 (en) 2002-07-03 2006-11-21 Exxonmobil Chemical Patents Inc. Process for steam cracking heavy hydrocarbon feedstocks
US7097758B2 (en) 2002-07-03 2006-08-29 Exxonmobil Chemical Patents Inc. Converting mist flow to annular flow in thermal cracking application
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JP5133689B2 (en) * 2004-10-08 2013-01-30 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ Process for producing lower olefins from Fischer-Tropsch synthesis products
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