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WO2009027007A2 - Procédé et dispositif permettant la production d'un gaz de synthèse à partir d'une huile lourde - Google Patents

Procédé et dispositif permettant la production d'un gaz de synthèse à partir d'une huile lourde Download PDF

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Publication number
WO2009027007A2
WO2009027007A2 PCT/EP2008/006439 EP2008006439W WO2009027007A2 WO 2009027007 A2 WO2009027007 A2 WO 2009027007A2 EP 2008006439 W EP2008006439 W EP 2008006439W WO 2009027007 A2 WO2009027007 A2 WO 2009027007A2
Authority
WO
WIPO (PCT)
Prior art keywords
naphtha
soot
heavy oil
pox reactor
gasification
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.)
Ceased
Application number
PCT/EP2008/006439
Other languages
German (de)
English (en)
Other versions
WO2009027007A3 (fr
Inventor
Jürgen GLASER
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
Publication of WO2009027007A2 publication Critical patent/WO2009027007A2/fr
Publication of WO2009027007A3 publication Critical patent/WO2009027007A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/36—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using oxygen or mixtures containing oxygen as gasifying agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
    • C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
    • C01B2203/0244—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being an autothermal reforming step, e.g. secondary reforming processes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
    • C01B2203/0255—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a non-catalytic partial oxidation step
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/049—Composition of the impurity the impurity being carbon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0872—Methods of cooling
    • C01B2203/0877—Methods of cooling by direct injection of fluid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons
    • C01B2203/1252—Cyclic or aromatic hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/14—Details of the flowsheet
    • C01B2203/148—Details of the flowsheet involving a recycle stream to the feed of the process for making hydrogen or synthesis gas

Definitions

  • the invention relates to a method for producing a carbon monoxide and hydrogen-containing gas (synthesis gas) by partial oxidation of a higher-boiling hydrocarbons (heavy oil) containing insert in one
  • the invention relates to a device for carrying out the method.
  • Carbon monoxide and / or hydrogen-containing gas mixtures are important starting materials for the production of a large number of products, such as ammonia, methanol or even synthetic fuels.
  • a process widely used in industry for producing synthesis gases or their precursors from hydrocarbons in synthesis gas plants is partial oxidation.
  • the heat required for the reaction is generated by incomplete (partial) oxidation of the hydrocarbons in use.
  • the POX reactor is supplied with oxygen in an amount which is insufficient for complete conversion of the hydrocarbons.
  • the soot removed from the gasification product is a valuable raw material, which is why it is separated from the wastewater produced by quenching and / or water scrubbing and fed to a material and / or energetic use.
  • soot makes sense for the soot to be recycled as an insert into the POX reactor and converted there to carbon monoxide.
  • the economy of the use of soot depends crucially on how high the effort for the separation of the soot from the wastewater and possibly its treatment to a feedstock.
  • soot-laden wastewater is mixed with naphtha to form a dispersion. While the majority of the ash contained in the wastewater remains in the water phase, the soot, which is wetted by naphtha much better than water, almost completely in the
  • the soot-containing naphtha fraction is first withdrawn from the decanter and mixed with heavy oil. From the mixture of substances thus produced, the naphtha is subsequently separated by distillation and stripping. The remaining mixture of heavy oil and carbon black is diluted with fresh heavy oil and recycled as an insert into the reactor of the heavy oil POX.
  • the soot-free water fraction from the decanter is depressurized, with light hydrocarbons dissolved in the water going into the gas phase. Both these light hydrocarbons as well as the distilled and the stripped naphtha are liquefied by cooling, stored and later re-loaded with soot Wastewater mixed. Because of the large expenditure on equipment and energy, this process is only used in large plants (> 50,000 m N 3 / h synthesis gas).
  • naphtha is available as a hydrocarbon-containing feed, even smaller amounts of synthesis gas can be produced economically by partial oxidation in a so-called naphtha POX.
  • wastewater laden with soot also accumulates here, from which, according to the state of the art, the soot is separated off and returned to the POX reactor as an insert, the outlay for soot recirculation is, however, significantly lower in a heavy oil POX.
  • a dispersion is produced according to the prior art from the soot-laden wastewater and naphtha, which is introduced into a decanter and there separated into a soot-containing naphtha fraction and a largely soot-free water fraction.
  • the naphtha fraction containing carbon black withdrawn from the decanter is then recycled as an insert into the reactor of the naphtha POX without further treatment, while the soot-free water fraction is discharged to a wastewater treatment plant.
  • the object of the present invention is therefore to provide a method of the type mentioned above and an apparatus for carrying out the method, which allow synthesis gases from heavy oil-containing inserts to produce more economically than is possible in the prior art.
  • the stated object is achieved according to the method according to the invention that the anhydrous naphtha / carbon black mixture is fed to the POX reactor together with heavy oil as an insert.
  • the cost-effectiveness of the process according to the invention depends crucially on the level of naphtha content in the hydrocarbon-containing feed to the POX reactor.
  • a preferred embodiment of The method according to the invention therefore envisages mixing the soot removal wastewater laden with soot only with the minimum amount of naphtha required in terms of process technology.
  • minimum amount of naphtha is that naphtha to understand that is just sufficient to reduce the soot in the largely soot-free water fraction to a maximum allowable residual concentration, which is typically less than 200Gew.-ppm.
  • the invention relates to a device for producing a carbon monoxide and hydrogen-containing gas (synthesis gas), comprising a gasification device (POX reactor) for recovering a gasification product by partial oxidation of a higher boiling hydrocarbons (heavy oil) containing insert, a means for cooling and washing the in the POX reactor recoverable gasification product, a first mixing device for mixing incurred in the synthesis gas production, soot-laden wastewater with naphtha and a separator for separating the dispersion produced in the first mixing device into a substantially soot-free water fraction and an anhydrous naphtha / carbon black mixture.
  • a gasification device POX reactor
  • a gasification device for recovering a gasification product by partial oxidation of a higher boiling hydrocarbons (heavy oil) containing insert
  • a means for cooling and washing the in the POX reactor recoverable gasification product a first mixing device for mixing incurred in the synthesis gas production, soot-laden wastewater with naphtha and a separator for
  • the stated object is achieved in that it comprises a second mixing device into which heavy oil and the naphtha / carbon black mixture produced in the separator can be introduced and from which a heavy oil, naphtha and carbon black containing mixture as an insert to the POX reactor is removable ,
  • the separating device is a decanter.
  • the device according to the invention expediently comprises a control device via which the mixing device always loads the soot removal from the soot laden with soot Wastewater of the heavy oil POX required minimum amount of naphtha can be fed.
  • the invention is particularly suitable to replace the expensive feedstock naphtha to a large extent by considerably cheaper heavy oil in existing synthesis gas plants in which a synthesis gas is produced by partial oxidation of naphtha.
  • a complex conversion of the system is not necessary for this purpose, since existing plant parts can be used virtually unchanged.
  • Hydrocarbons produced by partial oxidation synthesis gas cooling and scrubbing with water, a synthesis gas containing hydrogen and carbon monoxide Hydrocarbons produced by partial oxidation synthesis gas cooling and scrubbing with water, a synthesis gas containing hydrogen and carbon monoxide.
  • Partial oxidation is converted into a mainly hydrogen and carbon monoxide, but also carbon black-containing gasification product 4.
  • the gasification product 4 is cooled and freed from soot, whereby a loaded with soot wastewater 5 and the soot-free synthesis gas 6 are generated.
  • the loaded with soot wastewater 5 is then introduced into the mixing device M1 and mixed with naphtha 7, which is simultaneously supplied volume-controlled via the control element a, to form a dispersion.
  • the soot from the wastewater which is much better wetted by naphtha than water, goes into the naphthaphase, while in the wastewater 5 contained ash remains in the water phase.
  • the mixing device M1 is always supplied only the minimum amount of naphtha, which is required to bring the soot content in the water phase below a predetermined limit.
  • the dispersion is withdrawn from the mixing device M1 and introduced into the separator D.
  • the separating device D is a decanter, then after a residence time of typically 2 to 5 minutes from the top of the decanter a largely anhydrous naphtha / soot mixture 9 and over its bottom a substantially soot-free Water fraction 10 deducted.
  • the naphtha / soot mixture 9 is returned before the POX reactor R, mixed in the mixer M2 with heavy oil 11 and fed via line 1, as part of the insert, the POX reactor R.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Industrial Gases (AREA)
  • Physical Water Treatments (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant la production d'un gaz (gaz de synthèse) (6), contenant du monoxyde de carbone et de l'hydrogène, par oxydation partielle d'une charge (1), contenant des hydrocarbures à haut point d'ébullition (huile lourde) (11), dans un dispositif de gazéification (réacteur d'oxydation partielle) (R) ainsi que le refroidissement et le lavage (W) du produit de gazéification (4) obtenu dans le réacteur d'oxydation partielle (R), les eaux résiduaires (5) produites, chargées de noir de carbone, étant mélangées à du naphta (7) puis introduites dans un dispositif de séparation (D), duquel une fraction d'eau (10) largement exempte de noir de carbone et un mélange anhydre de naphta et de noir de carbone (9) sont retirés séparément. Le mélange anhydre de naphta et de noir de carbone (9) est amené avec l'huile lourde (11), comme charge, au réacteur d'oxydation partielle (R).
PCT/EP2008/006439 2007-08-24 2008-08-05 Procédé et dispositif permettant la production d'un gaz de synthèse à partir d'une huile lourde Ceased WO2009027007A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040092.8 2007-08-24
DE200710040092 DE102007040092A1 (de) 2007-08-24 2007-08-24 Verfahren und Vorrichtung zur Erzeugung von Synthesegas aus Schweröl

Publications (2)

Publication Number Publication Date
WO2009027007A2 true WO2009027007A2 (fr) 2009-03-05
WO2009027007A3 WO2009027007A3 (fr) 2009-04-30

Family

ID=40280222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/006439 Ceased WO2009027007A2 (fr) 2007-08-24 2008-08-05 Procédé et dispositif permettant la production d'un gaz de synthèse à partir d'une huile lourde

Country Status (3)

Country Link
DE (1) DE102007040092A1 (fr)
TW (1) TW200927645A (fr)
WO (1) WO2009027007A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992906A (en) * 1958-05-29 1961-07-18 Texaco Inc Carbon recovery method
GB1579070A (en) * 1977-11-02 1980-11-12 Ased Process for recovering the soot formed during the production of synthesis gas by partial oxidation of hydrocarbonaceous materials
US4205962A (en) * 1978-04-28 1980-06-03 Texaco Inc. Process for gas cleaning with reclaimed water
JP3993744B2 (ja) * 1998-11-16 2007-10-17 テキサコ デベロプメント コーポレーション ガス化装置における煤の除去方法

Also Published As

Publication number Publication date
WO2009027007A3 (fr) 2009-04-30
TW200927645A (en) 2009-07-01
DE102007040092A1 (de) 2009-02-26

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