WO2017186357A1 - Procédé et installation pour la purification de condensat de processus provenant du reformage catalytique à la vapeur d'un gaz d'alimentation hydrocarboné - Google Patents

Procédé et installation pour la purification de condensat de processus provenant du reformage catalytique à la vapeur d'un gaz d'alimentation hydrocarboné Download PDF

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Publication number
WO2017186357A1
WO2017186357A1 PCT/EP2017/025089 EP2017025089W WO2017186357A1 WO 2017186357 A1 WO2017186357 A1 WO 2017186357A1 EP 2017025089 W EP2017025089 W EP 2017025089W WO 2017186357 A1 WO2017186357 A1 WO 2017186357A1
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WO
WIPO (PCT)
Prior art keywords
process condensate
condensate
permeate
plant
steam
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/EP2017/025089
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English (en)
Inventor
Maik Lehmann
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Publication of WO2017186357A1 publication Critical patent/WO2017186357A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts

Definitions

  • This invention relates to a process and a plant for the purification of process condensate which has been separated from synthesis gas produced by catalytic steam reformation of a hydrocarbonaceous feed gas.
  • the steam used together with the hydrocarbonaceous feed gas is referred to as process steam. It is obtained by re-evaporating the condensate formed and deposited from the synthesis gas upon cooling thereof.
  • the heat content of the synthesis gas and of the flue gas however exceeds the heat quantity required for generating the process steam. To make good use of this excess heat, the same is utilized for generating so-called export steam, which chiefly is used outside the steam reforming process.
  • the purity requirements of the export steam often are very much higher than those of the process steam.
  • the process condensate contains impurities, such as methanol, ammonia, carbon dioxide, formic and acetic acid, which render a direct use of the condensate for the generation of export steam impossible.
  • impurities such as methanol, ammonia, carbon dioxide, formic and acetic acid
  • the two kinds of steam therefore often are generated in separate degassing and steam boilers, wherein fresh boiler feed water is used for the generation of export steam. This twofold configuration of the evaporation systems however increases the costs of the plant.
  • the European patent specification EP 2 456 721 B1 therefore presents a process in which the process condensate is purified to such an extent that it can be evaporated together with boiler feed water, in a common evaporation system, and can then be used both as export steam and as process steam.
  • This process is characterized in that the process condensate, after other purification stages, is subjected to a reverse osmosis and, as last stage, to an electrodeionization. By the reverse osmosis minerals and salts are separated, and by the electrodeionization organic acids and carbonate ions are removed.
  • the combination of reverse osmosis and treatment with UV light also is known, as described e.g. in the German document DE 40 08 458 A1 .
  • the UV light serves for the sterilization of the water.
  • the object is solved by a process according to the features of claim 1 and by a plant according to the features of claim 4.
  • a process for the purification of process condensate from the catalytic steam reformation of a hydrocarbonaceous feed gas comprising the process steps: a) provision of a process condensate under elevated pressure, which has been separated from the synthesis gas produced during the steam reformation, b) depressurization of the process condensate to atmospheric pressure, mechanical separation and discharge of the depressurizing gas for the further treatment outside the process,
  • the UV light here serves to as far as possible destroy all organic constituents which still are contained in the process condensate after depressurization and outgassing, wherein they are converted into organic acids, carbon dioxide and water.
  • the UV light conditions the impurity by a subsequent reverse osmosis such that it is particularly suitable for the separation from the process condensate.
  • a preferred embodiment of the process according to the invention is characterized in that between steps c) and d) of claim 1 hydrogen peroxide and/or ozone and titanium dioxide is fed into the process condensate.
  • Another preferred embodiment of the process according to the invention is characterized in that between steps d) and e) of claim 1 a basic substance is fed into the process condensate.
  • a basic substance is fed into the process condensate.
  • a plant for the purification of process condensate from the catalytic steam reformation of a hydrocarbonaceous feed gas comprising the plant sections:
  • the separator in essence can be a container, comprising an inlet for the inflow of the depressurized mixture of process condensate and steam, an outlet at the bottom for the liquid phase, and an outlet for the mixture of depressurizing gas and steam.
  • Heat exchanger for the heat exchange between process condensate and permeate. .
  • This heat exchanger for example can be a tube bundle or plate heat exchanger.
  • f Unit for irradiating the process condensate with UV light.
  • the lighting elements are positioned such that the process condensate is irradiated uniformly and with sufficient intensity.
  • Reverse osmosis unit for the treatment of the process condensate.
  • the quality of the membrane of this unit is adjusted to the type of impurities to be separated.
  • the boiler is designed so large that it can also be used for degassing the boiler feed water which is admixed to the purified process condensate.
  • the boiler is equipped with a heating element and with a stillhead filled with packings.
  • the stillhead is configured such that via the same the process condensate and the boiler feed water are introduced into the boiler and the gases expelled from the waters are discharged, which results in a stripping effect for the purification of the waters flowing in via the stillhead and the packing,
  • a preferred embodiment of the plant according to the invention furthermore comprises means for feeding hydrogen peroxide and/or ozone and titanium dioxide into the process condensate between plant sections e) and f).
  • hydroxyl ions are produced in the process condensate and the effect of the subsequently used UV light, which likewise produces hydroxyl ions, thereby is intensified.
  • Another preferred embodiment of the plant according to the invention furthermore comprises means for feeding a basic substance into the process condensate between plant sections f) and g).
  • the dissociation of acids and salts in the process condensate can be promoted and the efficiency of the subsequent reverse osmosis can be improved thereby.
  • the ions obtained by the dissociation form a surrounding sphere of water molecules and thereby are prevented from passing through the membrane of the reverse osmosis module.
  • Fig. 1 shows a flow diagram of an exemplary embodiment of the plant according to the invention.
  • the process condensate 1 separated from the synthesis gas is depressurized to almost atmospheric pressure in the expansion device 2 and introduced into the separator 3. Due to the resulting steam formation the process condensate 1 is cooled to approximately 100 °C.
  • the mixture 4 of depressurizing gas and steam, which is separated from the condensate in the separator 3, is discharged from the process for the further treatment.
  • heat exchanger 5 heat is exchanged between the hot, unpurified process condensate and the cooled, purified process condensate.
  • the cooler 15 the temperature of the process condensate is lowered to about 40 °C, so as not to expose the succeeding UV lamps to too high temperatures.
  • the process condensate is irradiated with UV light.
  • the hydrogen peroxide the ozone and the UV light protons are produced, which decompose the impurities contained in the condensate.
  • a base 8 subsequently is introduced.
  • the process condensate treated in this way is introduced into the reverse osmosis module 9. There, the impurities are separated as concentrate stream 10 and discharged from the process for the further treatment.
  • the purified process condensate (permeate of the reverse osmosis process) together with boiler feed water 1 1 is introduced into the boiler 12, after the heat exchange in 5, for the thermal degasification.
  • the gas 13 expelled thereby is discharged from the process for the further treatment.
  • the degassed water 14 is supplied to the steam generation (not shown).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne une installation et un procédé pour la purification de condensat de processus (1) provenant du reformage catalytique à la vapeur d'un gaz d'alimentation hydrocarboné en utilisant la lumière UV (7) et l'osmose inverse (9).
PCT/EP2017/025089 2016-04-25 2017-04-12 Procédé et installation pour la purification de condensat de processus provenant du reformage catalytique à la vapeur d'un gaz d'alimentation hydrocarboné Ceased WO2017186357A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107612.0A DE102016107612A1 (de) 2016-04-25 2016-04-25 Verfahren und Anlage zur Reinigung von Prozesskondensat aus der katalytischen Dampfreformierung eines kohlenwasserstoffhaltigen Einsatzgases
DE102016107612.0 2016-04-25

Publications (1)

Publication Number Publication Date
WO2017186357A1 true WO2017186357A1 (fr) 2017-11-02

Family

ID=58669771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/025089 Ceased WO2017186357A1 (fr) 2016-04-25 2017-04-12 Procédé et installation pour la purification de condensat de processus provenant du reformage catalytique à la vapeur d'un gaz d'alimentation hydrocarboné

Country Status (2)

Country Link
DE (1) DE102016107612A1 (fr)
WO (1) WO2017186357A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190315640A1 (en) * 2018-04-12 2019-10-17 Rahul D Solunke Membrane bio-reactor for condensate cleanup

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106346A1 (fr) * 2002-06-18 2003-12-24 Sasol Technology (Pty) Ltd Procede de purification d'eau provenant d'un processus de fischer-tropsch
EP2456721A1 (fr) * 2009-07-21 2012-05-30 Linde Aktiengesellschaft Procédé de nettoyage d un condensat de traitement
WO2012167789A2 (fr) * 2011-06-10 2012-12-13 Steeper Energy Aps Procédé et appareil pour la production d'hydrocarbure liquide
US20130008774A1 (en) * 2008-12-19 2013-01-10 Lino Carnelli Process for the purification of an aqueous stream coming from the fischer-tropsch reaction
CA2797496A1 (fr) * 2012-11-30 2014-05-30 General Electric Company Traitement d'eau produite servant a retirer les composes organiques
CN104671607A (zh) * 2015-02-09 2015-06-03 西安热工研究院有限公司 一种稠油废水处理回用电站锅炉的系统及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD260618A3 (de) * 1986-08-11 1988-10-05 Piesteritz Agrochemie Verfahren zur reinigung von prozesskondensat aus synthesegaserzeugungsanlagen
DE4008458A1 (de) 1990-03-16 1991-09-19 Benckiser Wassertechnik Joh A Verfahren und vorrichtung zur aufbereitung von wasser in einer zapfstellenanlage
US5573662A (en) * 1993-09-13 1996-11-12 Nomura Micro Science Co., Ltd. Apparatus for treatment of low-concentration organic waste water
DE102010045587A1 (de) * 2010-09-16 2012-03-22 Linde Aktiengesellschaft Verfahren zur Aufreinigung von Prozesskondensat
IL217275A (en) * 2011-12-29 2016-02-29 Amots Degani A machine for purifying and selling drinking water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106346A1 (fr) * 2002-06-18 2003-12-24 Sasol Technology (Pty) Ltd Procede de purification d'eau provenant d'un processus de fischer-tropsch
US20130008774A1 (en) * 2008-12-19 2013-01-10 Lino Carnelli Process for the purification of an aqueous stream coming from the fischer-tropsch reaction
EP2456721A1 (fr) * 2009-07-21 2012-05-30 Linde Aktiengesellschaft Procédé de nettoyage d un condensat de traitement
WO2012167789A2 (fr) * 2011-06-10 2012-12-13 Steeper Energy Aps Procédé et appareil pour la production d'hydrocarbure liquide
CA2797496A1 (fr) * 2012-11-30 2014-05-30 General Electric Company Traitement d'eau produite servant a retirer les composes organiques
CN104671607A (zh) * 2015-02-09 2015-06-03 西安热工研究院有限公司 一种稠油废水处理回用电站锅炉的系统及方法

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Publication number Publication date
DE102016107612A1 (de) 2017-10-26

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