KR940009317A - Coke removal method using air pulse - Google Patents

Coke removal method using air pulse Download PDF

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Publication number
KR940009317A
KR940009317A KR1019930020208A KR930020208A KR940009317A KR 940009317 A KR940009317 A KR 940009317A KR 1019930020208 A KR1019930020208 A KR 1019930020208A KR 930020208 A KR930020208 A KR 930020208A KR 940009317 A KR940009317 A KR 940009317A
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South Korea
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air
effluent gas
coke
duration
combustion
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KR1019930020208A
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Korean (ko)
Inventor
에이. 던캔 데니스
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알버트 어네스트 가레드
스톤 앤드 웹스터 엔지니어링 코포레이숀
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Publication of KR940009317A publication Critical patent/KR940009317A/en

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    • 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
    • C10G9/16—Preventing or removing incrustation
    • 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
    • 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

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  • 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)

Abstract

본 발명은 반응장치를 조업중지 또는 냉각할 필요없이 탄화수소 반응공정 경로를 코크스제거하는 방법에 관한 것으로서, 탄화스소 공급 흐름을 차단하는 단계와, 코크스가 제거될 때까지 코크스의 연소를 위해 증기 매트릭스 안으로 제한된 지속시간 동안 일련의 공기펄스를 유입시키는 단계와, 탄화수소 공급을 재개하는 단계를 포함한다.The present invention relates to a method for coking off a hydrocarbon reaction path without the need to shut down or cool down the reactor, the method comprising the steps of shutting off a carbon carbide feed stream and into the vapor matrix for combustion of coke until coke is removed. Introducing a series of air pulses for a limited duration and resuming the hydrocarbon feed.

Description

공기 펄스를 이용한 코크스제거 방법Coke removal method using air pulse

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따라 사용되는 반응로의 개략도,1 is a schematic representation of a reactor used in accordance with the present invention,

제2도는 본 발명의 공정하에서 코크스제거하는 동안의 유출물의 비중을 도시하는 그래프,2 is a graph showing the specific gravity of the effluent during coke removal under the process of the present invention,

제3도는 다운스트림 그래비토메터로부터의 본 발명의 공정하에서 코크스제거하는 동안의 유출물을 비중을 도시하는 그래프,3 is a graph showing the specific gravity of the effluent during coke removal under the process of the present invention from a downstream gravimeter;

제4도는 본 발명의 방법에 의해 코크스제거하는 동안의 공정처리 튜브의 길이방향에 따른 여러 위치에서의 온도를 도시하는 플롯,4 is a plot showing temperatures at various locations along the longitudinal direction of a process tube during coke removal by the method of the present invention,

제5도는 열전쌍 전후의 코크스 연소의 운동과 공기펄스에 따른 시간에 대한 온도를 도시하는 그래프이다.5 is a graph showing the temperature of the coke combustion motion before and after the thermocouple and the time according to the air pulse.

Claims (15)

탄화수소 반응시스템에서 탄화수소 반응 경로에 파울링된 코크스를 코크스제거하는 방법에 있어서, (a) 탄화수소 공급을 차단하는 단계와, (b) 코크스의 연소를 위해 상기 반응 경로로 향해진 증기 매트릭스로 공기 펄스를 주입하며, 상기 공기 펄스는 반응장치 성분들의 온도가 소정의 온도 이상으로 상승되지 않도록 지속시간이 제한된 일정 주기의 시간동안 코크스가 활발하게 연소하기에 충분한 농도를 가지며, 이로써 유출 가스를 생성하는 단계와, (c) 연소를 억제하고 연소하는 동안 가열된 반응 장치 성분들의 온도가 감소되도록 일정 주기의 시간동안 상기 공기를 상기 경로로 주입하는 것을 차단하는 단계와, (d) 상기 단계(b)에서 생성된 유출 가스가 약 0.2용량% 이하의 함량을 가질 때까지 상기 단계(b) 및 단계(c)를 연속적으로 반복하는 단계와, (e) 탄화수소 공급을 재개하는 단계로 구성되는 것을 특징으로 하는 방법.A method of coking coke fouled in a hydrocarbon reaction path in a hydrocarbon reaction system, the method comprising: (a) shutting off a hydrocarbon supply; Wherein the air pulse has a concentration sufficient to allow the coke to actively burn for a period of time, the duration of which is limited so that the temperature of the reactor components does not rise above a predetermined temperature, thereby generating an effluent gas. (C) inhibiting combustion and blocking injection of the air into the path for a period of time such that the temperature of the heated reaction device components is reduced during combustion, and (d) in step (b) Continuously repeating steps (b) and (c) until the resulting effluent gas has a content of about 0.2% by volume or less, and (e ) Resuming a hydrocarbon feed. 제1항에 있어서, 상기 코크스제거하는 동안 상기 유출가스를 계속 감시하는 단계를 추가로 포함하는 것을 특징으로 하는 방법.The method of claim 1, further comprising continuously monitoring the effluent gas during coke removal. 제1항에 있어서, 상기 단계(b) 동안의 증기 매트릭스 중의 공기 농도가 약 20 내지 약 50중량%인 것을 특징으로 하는 방법.The method of claim 1 wherein the air concentration in the vapor matrix during step (b) is about 20 to about 50 weight percent. 제3항에 있어서, 상기 단계(b) 동안의 증기 매트릭스 중의 공기 농도가 코크스제거 공정의 진행에 따라 감소하는 것을 특징으로 하는 방법.4. The method of claim 3, wherein the air concentration in the vapor matrix during step (b) decreases with the progress of the coke removal process. 제5항에 있어서, 상기 단계(b)에서 공기 펄스의 지속 시간이 약 10초 내지 약 50초인 것을 특징으로 하는 방법.6. The method of claim 5, wherein the duration of the air pulse in step (b) is from about 10 seconds to about 50 seconds. 제5항에 있어서, 상기 공기 펄스의 지속시간이 코크스제거 공정의 진행에 따라 감소하는 것을 특징으로 하는 방법.6. The method of claim 5, wherein the duration of the air pulses decreases as the coke removal process proceeds. 제1항에 있어서, 상기 단계(c) 동안의 공기의 차단의 지속시간이 약 5초 내지 약 30초인 것을 특징으로 하는 방법.The method of claim 1, wherein the duration of blocking of air during step (c) is from about 5 seconds to about 30 seconds. 제7항에 있어서, 상기 차단의 지속시간이 코크스제거 공정의 진행에 따라 증가하는 것을 특징으로 하는 방법.8. The method of claim 7, wherein the duration of the blockage increases with the progress of the coke removal process. 제1항에 있어서, 상기 단계(b)에서의 CO2함량이 0.2용량% 이하로 감소된 후 상기 튜브를 공기 연마하기 위하여 일정 주기의 시간동안 상기 튜브를 통해 공기 스트림을 흐르게 하는 단계를 추가로 포함하는 것을 특징으로 하는 방법.The method of claim 1, further comprising flowing an air stream through the tube for a period of time to air polish the tube after the CO 2 content in step (b) is reduced to 0.2% by volume or less. Method comprising a. 제1항에 있어서, 상기 경로에서의 연소가 후속하는 공기 펄스 이전에 진화되는 것을 특징으로 하는 방법.The method of claim 1 wherein combustion in said path is extinguished prior to subsequent air pulses. 제1항에 있어서, 상기 유출가스 중의 CO2함량이 그래비토메타로 공기의 비중에 대한 유출가스의 비중을 비교하여 측정되는 것을 특징으로 하는 방법.The method of claim 1, wherein the CO 2 content in the effluent gas is measured by comparing the specific gravity of the effluent gas with respect to the specific gravity of the air to the gravimetry. 제1항에 있어서, 상기 유출가스 중의 CO2함량이 직접적인 수단에 의해 측정되는 것을 특징으로 하는 방법.The method of claim 1 wherein the CO 2 content in the effluent gas is measured by direct means. 제12항에 있어서, 상기 CO2함량을 측정하는 직접적인 수단이 적외선 분석기로 구성되는 것을 특징으로 하는 방법.13. The method of claim 12, wherein the direct means of measuring the CO 2 content consists of an infrared analyzer. 제1항에 있어서, 상기 유출가스를 탄화수소 공급의 차단에 따라 탄화수소 반응 생성가스를 분리하기 위한 분리 시스템으로부터 멀어지도록 이송시키는 단계를 추가로 포함하는 것을 특징으로 하는 방법.The method of claim 1, further comprising transferring the effluent gas away from the separation system for separating the hydrocarbon reaction product gas upon interruption of the hydrocarbon feed. 제14항에 있어서, 상기 유출가스가 증기-탄소 반응으로부터의 소량의 일산화탄소 및 수소와 임의의 코크스 분쇄물을 확실히 연소시키기 위해 반응 장치의 연소 상자로 이송되는 것을 특징으로 하는 방법.15. The method of claim 14, wherein the effluent gas is sent to a combustion box of the reaction apparatus to ensure combustion of small amounts of carbon monoxide and hydrogen and any coke pulverization from the vapor-carbon reaction. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019930020208A 1992-10-05 1993-09-28 Coke removal method using air pulse KR940009317A (en)

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US95661292A 1992-10-05 1992-10-05
US07/956,612 1992-10-05

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AU (1) AU656485B2 (en)
BR (1) BR9303999A (en)
CA (1) CA2107541A1 (en)
FI (1) FI934349A (en)
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FR2743007B1 (en) * 1995-12-27 1998-01-30 Inst Francais Du Petrole CONTINUOUS PYROLYSIS AND DECOKING PROCESS APPLICABLE IN PARTICULAR TO THE PRODUCTION OF ACETYLENE
FR2748273B1 (en) * 1996-05-06 1998-06-26 Inst Francais Du Petrole METHOD AND DEVICE FOR THE THERMAL CONVERSION OF HYDROCARBONS INTO ALIPHATIC HYDROCARBONS MORE UNSATURATED THAN THE STARTING PRODUCTS, COMBINING A STAGE OF STEAM CRACKING AND A STAGE OF PYROLYSIS
JP6105190B2 (en) 2007-05-07 2017-03-29 ルムス テクノロジー インコーポレイテッド Decoking method for ethylene furnace radiation coil
US8684384B2 (en) 2009-01-05 2014-04-01 Exxonmobil Chemical Patents Inc. Process for cracking a heavy hydrocarbon feedstream
CN101872205B (en) * 2009-04-27 2011-11-02 中国石油化工股份有限公司 Automatic control method of online rapid decoking of cracking furnace
US8784515B2 (en) 2010-10-14 2014-07-22 Precision Combustion, Inc. In-situ coke removal
DE102013003416A1 (en) * 2013-02-28 2014-08-28 Linde Aktiengesellschaft Device for switching a cracking furnace between production mode and decoking mode
CA3033604C (en) 2019-02-12 2022-12-13 Michael KOSELEK Decoking process

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US2289350A (en) * 1937-12-29 1942-07-14 Texas Co Method of reconditioning furnace tubes
DE3060219D1 (en) * 1979-06-08 1982-04-01 Linde Ag Process and apparatus for the thermal decoking of an apparatus for the thermal cracking of hydrocarbons such apparatus comprising a cracking zone followed by a cooler for the product gas
DE3010000A1 (en) * 1980-03-15 1981-09-24 Basf Ag, 6700 Ludwigshafen METHOD FOR THERMAL DECOKING OF COLD GAS COOLERS
US4917787A (en) * 1983-10-31 1990-04-17 Union Carbide Chemicals And Plastics Company Inc. Method for on-line decoking of flame cracking reactors
US4849025A (en) * 1987-06-05 1989-07-18 Resource Technology Associates Decoking hydrocarbon reactors by wet oxidation

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AU656485B2 (en) 1995-02-02
CA2107541A1 (en) 1994-04-06
FI934349A (en) 1994-04-06
FI934349A0 (en) 1993-10-04
AU4871593A (en) 1994-04-21
JPH06316696A (en) 1994-11-15
EP0591856A1 (en) 1994-04-13
BR9303999A (en) 1994-06-21
NO933547L (en) 1994-04-06
NO933547D0 (en) 1993-10-04
CN1085593A (en) 1994-04-20

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