EP0110486A1 - Anlage zum thermischen Cracken von Kohlenwasserstoffen zu Alkenen, Mantel- und Rohrwärmetauscher für den Gebrauch in einer solchen Anlage und Verfahren zur Herstellung des Mantel- und Rohrwärmetauschers - Google Patents

Anlage zum thermischen Cracken von Kohlenwasserstoffen zu Alkenen, Mantel- und Rohrwärmetauscher für den Gebrauch in einer solchen Anlage und Verfahren zur Herstellung des Mantel- und Rohrwärmetauschers Download PDF

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Publication number
EP0110486A1
EP0110486A1 EP83201725A EP83201725A EP0110486A1 EP 0110486 A1 EP0110486 A1 EP 0110486A1 EP 83201725 A EP83201725 A EP 83201725A EP 83201725 A EP83201725 A EP 83201725A EP 0110486 A1 EP0110486 A1 EP 0110486A1
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EP
European Patent Office
Prior art keywords
heat exchanger
layer
shell
tubes
effluent
Prior art date
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Granted
Application number
EP83201725A
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English (en)
French (fr)
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EP0110486B1 (de
Inventor
Mario Prof. Dente
Eliseo Prof. Ranzi
Simon Barendregt
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.)
Pyrotec NV
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Pyrotec NV
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Publication of EP0110486A1 publication Critical patent/EP0110486A1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • 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
    • C10G9/002—Cooling of cracked gases

Definitions

  • the invention relates to a plant for thermo-cracking a hydrocarbon starting material to alkenes, comprising a cracking furnace with externally heated reactor tubes (coils) and a shell and.tube heat-exchanger connected to the cracking furnace in order to quench the reactor effluent.
  • reactor tubes coils
  • shell and.tube heat-exchanger connected to the cracking furnace in order to quench the reactor effluent.
  • the reactor effluent of the cracking furnaces is quenched in the shell and tube heat exchanger from 750-900° C to 350-560°c (Kirk-Othmer l.c., page 407, table 5) to prevent that after leaving the cracker furnace, in said effluent still reactions take place under adiabatic conditions, which would affect adversely the yield of alkenes, and simultaneously steam with a pressure of 105-125 bara (bar absolute) is generated.
  • Such a layer should have such a thickness, that it is impermeable to the reactor effluent, but on the other hand it should not be so thick that it impedes the heat transfer.
  • the minimum thickness should preferably be 0.5 ⁇ m. Preferably it has a thickness of not more than 20 pm,for, with greater thicknesses, the effect, the temperature drop on the layer, should be too big.
  • a particularly suitable process which can be used to obtain such a layer is, using a viscous mixture of a powdered graphite, metals, metal oxides, metal salts (particle size generally ⁇ 5 ⁇ m) with a silicone based resin in an aromatic solvent. Said mixture is applied with current spraying methods and is thermoset. Thermosetting takes suitably place at tempetatures between 275 0 c and 375 0 C for 11 ⁇ 2 - 5 h. Said thermosetting (curing) is necessary to vaporize the solvent, and to have reticulation take place in the resin component, and optionally to have the resin component decomposed, while silicon remains enclosed in the layer. The result is that a quasi-continuous layer is formed, with a small specific area. Such a layer is highly wear-resistant and resistant to high temperatures.
  • the impermeability of the layer can be increased by repeating the process several times.
  • Beside graphite especially metals from group 3 or 4 of the periodical system and their oxides are considered, e.g. aluminium, titanium, zirconium. Also silicates and aluminates can be used..
  • the impermeable layer on the internal surface of the heat exchanger tubes consists of an inert polymeric layer.
  • Such a layer has a structure which highly resembles the fouling layer which normally appears, and it is stable at the temperatures prevailing in the heat exchanger, so that it does. not influence the phenomena which appear in the heat exchanger. On this layer, once formed, only a small fouling layer appears.
  • the invention also relates to a shell and tube heatexchanger to be used in an apparatus for cracking a hydrocarbon starting material to alkenes, wherein the internal surfaces of the heat exchanger tubes are coated with an inert layer impermeable to the reactor effluent of a cracking furnace for the preparation of alkenes, said layer masking the alloy of which the heat exchanger tubes consist.
  • the layer by which the internal surfaces of the heat exchanger tubes are coated should preferably meet the above-mentioned conditions.
  • the invention also relates to a process for manufacturing a shell and tube heatexchanger to be used in an installation for cracking a hydrocarbon starting material to alkenes and resistant to quenching of the effluent from the cracking reactor of such an installation, wherein a polymeric layer is formed by spraying a mixture of the oily fraction which is recovered when quenching the effluent from the cracking reactor (alkylene quench oil) and of an initiator forming free radicals onto the internal surface of the tube and thermosetting it.
  • alkylene quench oil alkylene quench oil
  • a peroxide is used as catalyst, in particular benzoyl peroxide, as peroxides in the polymerisation of alkenes and alkene mixtures are effective catalysts.
  • the amount of catalyst may vary within wide ranges but preferably a mixture is used which comprises 0.5 - 3% of catalyst, as with such a mixture quickly a good polymer layer can be obtained.
  • One TLX (A) had heatexchanger tubes made from a nickel-chromium- alloy which is usual for this type of tubes.
  • the other TLX (B) had heat exchanger tubes from the same nickel chromium alloy, the internal surface of which was coated with a 5 ⁇ m thick aluminium based layer applied in 3 steps.
  • the temperature of the quenched effluent coming from the TLX (A) in the beginning of the test was 420°C and the temperature of the quenched effluent coming from TLX (B) was 450°C.
  • TLX (A) (Curve A) the temperature of the effluent coming from the TLX, increased to 500 C in about 5 days and during the rest of the test the temperature gradually further increased, until after 26 days the maximum allowed temperature of 560°C was obtained.
  • TLX (B) The fouling rate in TLX (B) (Curve B) was substantially constant and the extrapolated attainable hours of service will be 60 days in stead of 26 like for TLX (A).
  • TLX (A) appeared to comprise a thick fouling layer.
  • Coating the internal surface of the heat exchanger tubes of TLX (B) was carried out by spraying a mixture of 12% by weight of aluminium powder with a particle size of ⁇ 2 ⁇ m, 48% by weight of a silicoreresin comprising methyl groups and phenyl groups, and 40% by weight of toluene into the tube, draining the excess and heating the remaining layer for 2 hours at 300°C, thus vaporizing the toluene and reticulating the resin, repeating this processing once, and finally repeating the treatment once with a mixture of 10% by weight of aluminium powder with a particle size of ⁇ 2 ⁇ m, 40% by weight of the same silicore resin and 50% by weight of toluene.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP19830201725 1982-12-07 1983-12-06 Anlage zum thermischen Cracken von Kohlenwasserstoffen zu Alkenen, Mantel- und Rohrwärmetauscher für den Gebrauch in einer solchen Anlage und Verfahren zur Herstellung des Mantel- und Rohrwärmetauschers Expired EP0110486B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8204731 1982-12-07
NL8204731A NL8204731A (nl) 1982-12-07 1982-12-07 Installatie voor het thermisch kraken van een koolwaterstofuitgangsmateriaal tot alkenen, buizenwarmtewisselaar ten gebruike in zo'n installatie en werkwijze voor de vervaardiging van een buizenwarmtewisselaar.

Publications (2)

Publication Number Publication Date
EP0110486A1 true EP0110486A1 (de) 1984-06-13
EP0110486B1 EP0110486B1 (de) 1986-12-10

Family

ID=19840709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830201725 Expired EP0110486B1 (de) 1982-12-07 1983-12-06 Anlage zum thermischen Cracken von Kohlenwasserstoffen zu Alkenen, Mantel- und Rohrwärmetauscher für den Gebrauch in einer solchen Anlage und Verfahren zur Herstellung des Mantel- und Rohrwärmetauschers

Country Status (5)

Country Link
EP (1) EP0110486B1 (de)
JP (1) JPS59157494A (de)
CA (1) CA1210282A (de)
DE (1) DE3368282D1 (de)
NL (1) NL8204731A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663725A1 (fr) * 1990-06-22 1991-12-27 Nuovo Pignone Spa Echangeur de chaleur en cuivre ameliore pour chauffe-eau montes sur des murs.
EP0608081A1 (de) * 1993-01-15 1994-07-27 General Electric Company Beschichtete Gegenstände und Verfahren zur Verhütung von Ablagerungen thermischer Zersetzungsprodukte von Brennstoff
DE4334827C1 (de) * 1993-10-08 1994-10-06 Mannesmann Ag Verfahren zur Verminderung der Verkokung von Wärmetauschflächen
AU661919B2 (en) * 1992-09-22 1995-08-10 General Electric Company Coated article for hot hydrocarbon fluid and method of preventing fuel thermal degradation deposits
DE4405884C1 (de) * 1994-02-21 1995-09-07 Mannesmann Ag Wärmeaustauschfläche in Reaktoren und/oder Wärmeaustauschern und Verfahren zur Herstellung einer katalytisch desaktivierten Metalloberfläche
AU667945B2 (en) * 1992-09-22 1996-04-18 General Electric Company Coated articles and method for the prevention of fuel thermal degradation deposits
US5805973A (en) * 1991-03-25 1998-09-08 General Electric Company Coated articles and method for the prevention of fuel thermal degradation deposits
FR2809170A1 (fr) * 2000-05-22 2001-11-23 Denso Corp Echangeur de chaleur a gaz d'echappement
US6989135B2 (en) * 1999-07-01 2006-01-24 Syntroleum Corporation Hydrocarbon conversion system with enhanced combustor and method
WO2015183641A1 (en) * 2014-05-26 2015-12-03 Ineos Europe Ag Effluent cooler in the manufacture of acrylonitrile
CN112881559A (zh) * 2021-01-20 2021-06-01 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） 邻苯二甲酸酯含量快速检测方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE348252A (de) *
NL300760A (de) *
GB831912A (en) * 1956-12-27 1960-04-06 Hubert Salmen Improvements in or relating to condensers and heat-exchangers
NL7007556A (en) * 1970-05-25 1971-11-29 Quenching appts - for hot gases especially hydrocarbon - cracking gases giving reduced tar and carbon
FR2264261A1 (de) * 1974-03-15 1975-10-10 Schmidt Sche Heissdampf
US4054174A (en) * 1974-03-18 1977-10-18 The Babcock & Wilcox Company Method of inhibiting deposition of internal corrosion products in tubes
DE3038084A1 (de) * 1980-05-23 1981-12-03 Sumitomo Light Metal Industries Ltd., Tokyo Beschichtungsmasse und ihre verwendung zum schuetzen von inneren oberflaechen von waermetauscherrohren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4997949A (de) * 1973-01-26 1974-09-17
JPS501446A (de) * 1973-05-09 1975-01-09
JPS5125414A (ja) * 1974-08-28 1976-03-02 Showa Aluminium Co Ltd Netsukokankyotaishokuaruminiumuawasezai
US4200518A (en) * 1979-03-22 1980-04-29 Chevron Research Company Heat exchanger anti-foulant
US4296804A (en) * 1979-06-28 1981-10-27 Resistoflex Corporation Corrosion resistant heat exchanger element and method of manufacture

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE348252A (de) *
NL300760A (de) *
GB831912A (en) * 1956-12-27 1960-04-06 Hubert Salmen Improvements in or relating to condensers and heat-exchangers
NL7007556A (en) * 1970-05-25 1971-11-29 Quenching appts - for hot gases especially hydrocarbon - cracking gases giving reduced tar and carbon
FR2264261A1 (de) * 1974-03-15 1975-10-10 Schmidt Sche Heissdampf
US4054174A (en) * 1974-03-18 1977-10-18 The Babcock & Wilcox Company Method of inhibiting deposition of internal corrosion products in tubes
DE3038084A1 (de) * 1980-05-23 1981-12-03 Sumitomo Light Metal Industries Ltd., Tokyo Beschichtungsmasse und ihre verwendung zum schuetzen von inneren oberflaechen von waermetauscherrohren

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005573A3 (fr) * 1990-06-22 1993-11-09 Nuovo Pignone Spa Perfectionnement aux echangeurs de chaleur en cuivre pour chaudieres murales.
ES2048032A1 (es) * 1990-06-22 1994-03-01 Nuovo Pignone Spa Revestimiento para un intercambiador de calor de cobre perfeccionado para calderas murales.
FR2663725A1 (fr) * 1990-06-22 1991-12-27 Nuovo Pignone Spa Echangeur de chaleur en cuivre ameliore pour chauffe-eau montes sur des murs.
US5805973A (en) * 1991-03-25 1998-09-08 General Electric Company Coated articles and method for the prevention of fuel thermal degradation deposits
AU661919B2 (en) * 1992-09-22 1995-08-10 General Electric Company Coated article for hot hydrocarbon fluid and method of preventing fuel thermal degradation deposits
AU667945B2 (en) * 1992-09-22 1996-04-18 General Electric Company Coated articles and method for the prevention of fuel thermal degradation deposits
EP0608081A1 (de) * 1993-01-15 1994-07-27 General Electric Company Beschichtete Gegenstände und Verfahren zur Verhütung von Ablagerungen thermischer Zersetzungsprodukte von Brennstoff
DE4334827C1 (de) * 1993-10-08 1994-10-06 Mannesmann Ag Verfahren zur Verminderung der Verkokung von Wärmetauschflächen
EP0647699A2 (de) * 1993-10-08 1995-04-12 MANNESMANN Aktiengesellschaft Verfahren zur Verminderung der Verkokung von Wärmetauschflächen
EP0647699A3 (de) * 1993-10-08 1995-07-26 Mannesmann Ag Verfahren zur Verminderung der Verkokung von Wärmetauschflächen.
DE4405884C1 (de) * 1994-02-21 1995-09-07 Mannesmann Ag Wärmeaustauschfläche in Reaktoren und/oder Wärmeaustauschern und Verfahren zur Herstellung einer katalytisch desaktivierten Metalloberfläche
US6989135B2 (en) * 1999-07-01 2006-01-24 Syntroleum Corporation Hydrocarbon conversion system with enhanced combustor and method
FR2809170A1 (fr) * 2000-05-22 2001-11-23 Denso Corp Echangeur de chaleur a gaz d'echappement
WO2015183641A1 (en) * 2014-05-26 2015-12-03 Ineos Europe Ag Effluent cooler in the manufacture of acrylonitrile
CN112881559A (zh) * 2021-01-20 2021-06-01 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） 邻苯二甲酸酯含量快速检测方法
CN112881559B (zh) * 2021-01-20 2023-08-18 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） 邻苯二甲酸酯含量快速检测方法

Also Published As

Publication number Publication date
EP0110486B1 (de) 1986-12-10
JPH0519080B2 (de) 1993-03-15
CA1210282A (en) 1986-08-26
JPS59157494A (ja) 1984-09-06
NL8204731A (nl) 1984-07-02
DE3368282D1 (en) 1987-01-22

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