EP0099813A2 - Verfahren zur Behandlung von brennbarem Gas und Vorrichtung zur Anwendung des Verfahrens - Google Patents

Verfahren zur Behandlung von brennbarem Gas und Vorrichtung zur Anwendung des Verfahrens Download PDF

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Publication number
EP0099813A2
EP0099813A2 EP83401421A EP83401421A EP0099813A2 EP 0099813 A2 EP0099813 A2 EP 0099813A2 EP 83401421 A EP83401421 A EP 83401421A EP 83401421 A EP83401421 A EP 83401421A EP 0099813 A2 EP0099813 A2 EP 0099813A2
Authority
EP
European Patent Office
Prior art keywords
gas
boiler
booster
pressure
controlled
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.)
Granted
Application number
EP83401421A
Other languages
English (en)
French (fr)
Other versions
EP0099813A3 (en
EP0099813B1 (de
Inventor
Michel Cherpaz
Jean-Marie Vanzemberg
Jacques Druelle
Jean Bernard
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.)
D'ETUDES TECHNIQUES ET D'ENTREPRISES GENERALES SODETEG Ste
Original Assignee
D'ETUDES TECHNIQUES ET D'ENTREPRISES GENERALES SODETEG Ste
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Publication date
Application filed by D'ETUDES TECHNIQUES ET D'ENTREPRISES GENERALES SODETEG Ste filed Critical D'ETUDES TECHNIQUES ET D'ENTREPRISES GENERALES SODETEG Ste
Publication of EP0099813A2 publication Critical patent/EP0099813A2/de
Publication of EP0099813A3 publication Critical patent/EP0099813A3/fr
Application granted granted Critical
Publication of EP0099813B1 publication Critical patent/EP0099813B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel

Definitions

  • the invention relates to a process for the treatment of combustible gas produced or extracted in variable quantities, said process having mainly the aim of the immediate combustion of at least most of the gas in a boiler for use, avoiding an expensive intermediate storage carried out at high pressure.
  • the invention also relates to a fuel gas installation for the implementation of this process.
  • a field of application of the invention may be that of a potato packaging plant (for the production of frozen food) where the treatments result in the formation of large quantities of effluents with a high content of organic matter.
  • Anaerobic fermentation leads to both very efficient purification (around 90%) and the production of biogas. The latter, if recovered, can cover a non-negligible part of the plant's energy needs.
  • These plants include steam production boilers that operate normally on natural gas. The invention can make it possible, in such a context, to significantly reduce the consumption of natural gas.
  • the invention goes against this concept by proposing a rational use of the biogas produced, as it is formed, without high pressure intermediate storage.
  • the invention therefore relates to a process for treating combustible gas produced in variable quantity, for the immediate combustion of at least the greatest part of said gas in a boiler, characterized in that it consists in carrying said gas at a relatively low pressure just necessary to allow the supply of said boiler, possibly recirculating a part of said compressed gas towards the production area of said gas to maintain a relatively constant pressure in this area.
  • the invention also relates to an installation for treating combustible gas produced in variable quantity, for example gas coming from an anaerobic fermentation tank containing organic matter, said treatment having mainly the aim of immediate combustion of at least the largest part of the gas in a boiler, characterized in that it comprises at least one booster connected upstream of said boiler, said booster being adjusted to bring said gas to a low pressure just necessary to allow the supply of said boiler and means for recirculating part of said compressed gas comprising in particular a controlled opening valve, controlled by a pressure sensor upstream of said booster.
  • the booster is of the constant flow type and the variable recirculation of the gas therefore makes it possible to regulate the value of the vacuum which prevails above the fermentation tank.
  • a flare is provided connected to the outlet of the booster by means of a controlled valve, of the progressive opening type, said valve being in particular controlled by a pressure sensor connected to the outlet of the booster. It is also possible to provide several boosters mounted in parallel and respectively put into service for predetermined flow ranges, for example by means of measuring the pressure upstream of said boosters.
  • the fuel gas treatment installation is intended to be inserted between an anaerobic closing tank 11 and auxiliary burners 12 of a boiler 13.
  • the gas is sucked as it is formed in the tank 11 by a conduit 14 and passes through a drainage manhole 15 of the type with water level regulation in which the gas cooling condensates are recovered.
  • the outlet of the drainage manhole is connected via an all-or-nothing type valve 16 to the inputs of two boosters SI and S2 connected in parallel.
  • the outputs of these boosters supply the auxiliary burners 12, through an exhaust duct 17.
  • the boosters are adjusted to bring the gas to a low pressure just necessary to allow the supply of the boiler.
  • Gas recirculation means comprising a series connection 18 of several components are connected between the outputs and the inputs of the boosters.
  • This series connection includes a regulator 19, a cooling exchanger 20 and above all a controlled valve 21, of the progressive action type, controlled by a pressure sensor 22 connected upstream of the boosters between the drainage manhole 15 and the valve 16.
  • the signals generated by the sensor 22 are processed in a control unit 23 to, on the one hand actuate the opening of the valve 21 and, on the other hand, to selectively activate one or two blowers depending on flow ranges predetermined.
  • the production rate is linked to the pressure in the fermentation tank and the commissioning or stopping of the boosters will be done from different pressure thresholds, this pressure being measured by the sensor 22.
  • a flare 25 is connected to the common outlet of the boosters via a modulating electropneumatic valve 26 controlled by a pressure sensor 27 connected to the outlet of the boosters.
  • the admission of gas to the flare makes it possible to regulate to a certain extent the supply pressure of the boiler.
  • An oxygen rate analyzer 28, of the paramagnetic susceptibility type is connected (broken lines 29, 30, 31) at several points in the gas circulation circuit between the tank II and the boiler 13. This analyzer controls a system Security 32 capable of stopping the installation as soon as the oxygen content exceeds a predetermined value.
  • This security system controls in particular the valve 16 as well as another valve 33, of the all-or-nothing type, connected between the tank-booster link on the one hand and a gas evacuation chimney 34 on the other hand.
  • the operation of the installation which has just been described is very simple and follows clearly from the above description.
  • the biogas is sucked into the tank 11 by the booster or boosters S1, S2, the valve 16 being normally open and the valve 33 normally closed.
  • the biogas leaves part of its humidity in the drainage manhole 15.
  • a recycling of the pressurized gas, modulated by the valve 21, is carried out when the production of biogas in the tank 11 is less than the constant flow rate of the blower (s) put into service , which therefore makes it possible to maintain a substantially constant depression in the tank.
  • the pressure reducer 19 and the temperature exchanger 20 allow the fraction reinjected to be brought back to the initial temperature and pressure conditions.
  • the valve 16 is closed while the valve 33 opens putting the tank 11 in communication with the evacuation chimney 34; the blowers are taken out of service.
  • the invention is not limited to the embodiment of the installation which has just been described but includes all the technical equivalents of the means used if these are within the scope of the claims which follow.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)
EP19830401421 1982-07-20 1983-07-08 Verfahren zur Behandlung von brennbarem Gas und Vorrichtung zur Anwendung des Verfahrens Expired EP0099813B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8212653A FR2530488B1 (fr) 1982-07-20 1982-07-20 Procede de traitement de gaz combustible et installation pour la mise en oeuvre de ce procede
FR8212653 1982-07-20

Publications (3)

Publication Number Publication Date
EP0099813A2 true EP0099813A2 (de) 1984-02-01
EP0099813A3 EP0099813A3 (en) 1985-06-19
EP0099813B1 EP0099813B1 (de) 1988-03-30

Family

ID=9276124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830401421 Expired EP0099813B1 (de) 1982-07-20 1983-07-08 Verfahren zur Behandlung von brennbarem Gas und Vorrichtung zur Anwendung des Verfahrens

Country Status (3)

Country Link
EP (1) EP0099813B1 (de)
DE (1) DE3376134D1 (de)
FR (1) FR2530488B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899013A (en) * 1956-04-09 1959-08-11 Nat Tank Co Apparatus for recovery of petroleum vapors from run tanks
FR1334393A (fr) * 1962-06-18 1963-08-09 Rateau Soc Perfectionnement aux dispositifs d'antipompage pour batterie ou groupe de compresseurs
FR1470495A (fr) * 1965-03-18 1967-02-24 Oemv Ag Procédé et appareil pour l'utilisation ou l'exploitation de gaz résiduels combustibles provenant de raffineries ou d'autres installations
FR2299593A1 (fr) * 1974-08-21 1976-08-27 Boulord Pierre Procede et dispositif pour relever le niveau
US4095934A (en) * 1977-03-24 1978-06-20 Mobil Oil Corporation Waste gas recovery
US4273514A (en) * 1978-10-06 1981-06-16 Ferakarn Limited Waste gas recovery systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899013A (en) * 1956-04-09 1959-08-11 Nat Tank Co Apparatus for recovery of petroleum vapors from run tanks
FR1334393A (fr) * 1962-06-18 1963-08-09 Rateau Soc Perfectionnement aux dispositifs d'antipompage pour batterie ou groupe de compresseurs
FR1470495A (fr) * 1965-03-18 1967-02-24 Oemv Ag Procédé et appareil pour l'utilisation ou l'exploitation de gaz résiduels combustibles provenant de raffineries ou d'autres installations
FR2299593A1 (fr) * 1974-08-21 1976-08-27 Boulord Pierre Procede et dispositif pour relever le niveau
US4095934A (en) * 1977-03-24 1978-06-20 Mobil Oil Corporation Waste gas recovery
US4273514A (en) * 1978-10-06 1981-06-16 Ferakarn Limited Waste gas recovery systems

Also Published As

Publication number Publication date
DE3376134D1 (en) 1988-05-05
EP0099813A3 (en) 1985-06-19
FR2530488B1 (fr) 1984-12-28
FR2530488A1 (fr) 1984-01-27
EP0099813B1 (de) 1988-03-30

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