EP0198142A1 - Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen - Google Patents

Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen Download PDF

Info

Publication number
EP0198142A1
EP0198142A1 EP85400746A EP85400746A EP0198142A1 EP 0198142 A1 EP0198142 A1 EP 0198142A1 EP 85400746 A EP85400746 A EP 85400746A EP 85400746 A EP85400746 A EP 85400746A EP 0198142 A1 EP0198142 A1 EP 0198142A1
Authority
EP
European Patent Office
Prior art keywords
liquid
pump
hydrocarbon
tank
product
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.)
Withdrawn
Application number
EP85400746A
Other languages
English (en)
French (fr)
Inventor
Louis Paugam
Jean-Louis Barré
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.)
Sihi Pompes SA
Original Assignee
Sihi Pompes SA
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
Priority to FR8316344A priority Critical patent/FR2553500B1/fr
Application filed by Sihi Pompes SA filed Critical Sihi Pompes SA
Priority to EP85400746A priority patent/EP0198142A1/de
Publication of EP0198142A1 publication Critical patent/EP0198142A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/001—General arrangements, plants, flowsheets

Definitions

  • the invention relates to a method and a device for recovering hydrocarbons, more particularly a method and a device for recovering hydrocarbon vapors which remain in tanks or reservoirs of liquid hydrocarbons after their emptying.
  • Hydrocarbons for example fuels and fuels of all types
  • Hydrocarbons are stored in tanks or reservoirs where tankers come to supply themselves.
  • a tank is "empty", that is to say that it no longer contains liquid hydrocarbons, it still contains its own volume of hydrocarbon vapors.
  • hydrocarbon vapors are sometimes released into the atmosphere but more often than not we try to recover them to avoid pollution and losses of interesting products.
  • the most used solution at present consists of adsorbing the hydrocarbon vapors on activated carbon and then eluting the activated carbon with water vapor to recover liquid hydrocarbons.
  • the device comprises several adsorption columns operating in the adsorption-elution cycle, a set for producing steam and a set for cooling and separating the water-liquid hydrocarbon mixture.
  • Such a complex device is used for the whole of a depot comprising reservoirs intended for different types of hydrocarbons (for example; regular gasoline, super, fuel oil of different qualities) and the recovered liquid product whose composition corresponds to a mixture of the various qualities is generally recycled into the lower quality product, a distillation of this product recovered offering no economic interest.
  • the present invention provides a simple and efficient method and device for recovering hydrocarbons, and, in practice, the device can be provided for each tank or tank, which will make it possible to recover a liquid product which can be returned to the starting product.
  • the method according to the invention consists in sucking and condensing the hydrocarbon vapors using a liquid ring vacuum pump, this liquid ring pump operating with a liquid of substantially the same composition as the hydrocarbon to be recovered, then separating the liquid product discharged by the vacuum pump from the gases that cannot be condensed under operating conditions, recycling part of the liquid product obtained to supply the vacuum pump and collecting the rest of the liquid product.
  • the recovery device comprises a liquid ring vacuum pump capable of providing an overpressure of a few atmospheres, a decanter-separator where the liquid product separates from the gases which cannot be condensed under operating conditions and a set of circulation pipes. comprising circulation pumps, refrigeration means and regulating devices.
  • This device gives an excellent recovery yield, which can reach practically the theoretical value.
  • the single figure schematically represents a device for recovering hydrocarbons according to the invention.
  • the hydrocarbons to be recovered come from a source S 1 .
  • This source is a tank or cistern, of variable capacity going from the car tank to the largest tanks, which will often be 5000 m 3 , containing a particular type of hydrocarbon or more generally a particular mixture of hydrocarbons (regular gasoline, super, diesel, fuel oil do domestic, heavy fuel oil, etc.).
  • this source has been emptied of its liquid content, it still contains its volume (for example 5000 m) of a mixture of gases and hydrocarbon vapors.
  • gas here designates air and gaseous hydrocarbons under ambient conditions of pressure and temperature.
  • hydrocarbon vapors means hydrocarbons which are normally liquid but which, due to their vapor pressure, have vaporized during storage and draining of the liquid product.
  • the mixture of gas and hydrocarbon vapors passes through line 1 in a first exchanger E l which has the role of carrying out a first refrigeration, accompanied by a certain condensation, to avoid the introduction of a product which is too hot in the liquid ring pump.
  • the mixture of gases, hydrocarbon vapors and liquid hydrocarbons then enters via a safety valve 2 into a liquid ring vacuum pump PaL.
  • a liquid ring pump has a vane rotor and at rest contains sufficient working liquid so that, in operation, this liquid forms a liquid ring which traps the product pumped between the rotor blades in increasing and decreasing volumes .
  • the service liquid has substantially the same composition as the particular mixture of hydrocarbons which it is desired to recover. This operating liquid is brought to the pump at a temperature low enough to give the vapor pressure necessary to condense the hydrocarbons contained in the feed gas mixture.
  • the product leaving the PaL pump is a mixture of liquid hydrocarbons (service liquid and recovered liquid) and gases which cannot be condensed under the operating conditions (temperature and pressure) of the PaL pump, i.e. air, gas' carbonic and possibly the first terms of the hydrocarbon series.
  • This product is sent via line 3 to a decanter-separator DS where the liquid product separates and falls to the bottom of the decanter.
  • the coolant will usually be cold water.
  • the hydrocarbon to be recovered is butane or propane, we can use a cooler coolant or use freon expansion heat exchangers to obtain the temperatures of -35 to -40 ° C necessary for the liquefaction of propane .
  • the liquid hydrocarbon is sent via line 5 to the pump PaL as service liquid.
  • a bypass 6 allows this product to be returned to the DS decanter-separator, depending on the needs of the pump in service liquid.
  • a device 7 for regulating the level in the decanter-separator DS ensures a constant level of hydrocarbons in the decanter and the excess hydrocarbon is pumped by the pump P 2 to a recovery tank S 2 of the product or to any other device storage or recycling.
  • the compressed gases which cannot be condensed under operating conditions are evacuated from the settling tank D S by means of a valve and a heat exchanger E 2 which cools them and possibly condenses the hydrocarbon vapors contained in the settling tank DS, before the gases are released via regulator 8.
  • liquid ring pump which acts simultaneously as a vacuum pump, compressor, condenser and refrigerant, makes it possible to aspirate, compress and condense the hydrocarbon vapors, under practically isothermal conditions.
  • cold source (not shown) which feeds the exchangers will be chosen as a function of the temperature and vapor pressure desired in the liquid ring pump according to the product that is to be recovered.
  • the level regulation device 7 which causes the evacuation of the recovered liquid when it reaches a predetermined level in the decanter-separator DS also allows correct supply of the liquid ring, both at start-up and in operation.
  • the main advantages of the method and of the device according to the invention are that they are simple, effective, relatively inexpensive having regard to the recovery yields which they allow and are compact. These last two characteristics allow the use of an apparatus for each tank or tank, the capacity of the recovery device being chosen as a function of the capacity of the source of gaseous mixture.
  • the coolant is simply cold water, which at no time comes into contact with the product to be recovered, which avoids the need to vaporize large quantities of water and to carry out a water-hydrocarbon separation imposed by the use of activated carbon recovery of the prior art.
  • each tank or tank can be fitted with such a device according to the invention, this device can be used in addition to a safety valve on a tank.
  • the device according to the present invention can be brought into communication by appropriate means (pipeline, valves, etc.) with the outlet of the safety valve.
  • appropriate means pipeline, valves, etc.
  • a servo device or the like activates the device for recovering hydrocarbons, possibly with a reduced power compared to its normal operation.
  • the entry of air following a drop in pressure into the tank is ensured in a conventional manner.
  • This device can also be used when filling the tanks to recover the hydrocarbon vapors evacuated to the tank vent at this time.
  • a 5000 m 3 tank having contained petrol is connected to a hydrocarbon recovery device according to the invention.
  • the exchanger E 1 lowers the temperature of the gas mixture by approximately 8 ° C before it enters the liquid ring pump with a capacity of 500 m 3 / h.
  • the three heat exchangers E 1 , E 2 and E 3 are supplied with cold water (2 ° C) and the operating liquid enters the pump at a temperature of 5 ° C sufficient to condense most of the gasoline vapors in the liquid ring pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
EP85400746A 1983-10-14 1985-04-16 Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen Withdrawn EP0198142A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8316344A FR2553500B1 (fr) 1983-10-14 1983-10-14 Procede et dispositif de recuperation de vapeurs d'hydrocarbures
EP85400746A EP0198142A1 (de) 1983-10-14 1985-04-16 Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8316344A FR2553500B1 (fr) 1983-10-14 1983-10-14 Procede et dispositif de recuperation de vapeurs d'hydrocarbures
EP85400746A EP0198142A1 (de) 1983-10-14 1985-04-16 Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen

Publications (1)

Publication Number Publication Date
EP0198142A1 true EP0198142A1 (de) 1986-10-22

Family

ID=26099987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400746A Withdrawn EP0198142A1 (de) 1983-10-14 1985-04-16 Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen

Country Status (2)

Country Link
EP (1) EP0198142A1 (de)
FR (1) FR2553500B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002018032A2 (en) * 2000-08-31 2002-03-07 Harmse Barthlo Von Moltitz A method of treating an effluent gas stream, and apparatus for use in such method
WO2020015963A1 (de) * 2018-07-19 2020-01-23 Thilo Ittner Thermoelektrischer oder thermomechanischer wandler und computergesteuerte oder elektronisch gesteuerte verfahren

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553500B1 (fr) * 1983-10-14 1986-01-03 Sihi Pompes Procede et dispositif de recuperation de vapeurs d'hydrocarbures
WO1989012201A1 (en) * 1988-05-30 1989-12-14 Siemens Aktiengesellschaft Process plant
EP0437637A1 (de) * 1989-11-20 1991-07-24 KKW Kulmbacher Klimageräte-Werk GmbH Flüssigkeitsringpumpe
DE59006448D1 (de) * 1990-11-23 1994-08-18 Siemens Ag Flüssigkeitsringpumpe.
US6834686B2 (en) 2002-09-09 2004-12-28 Delaware Capital Formation, Inc. Tank pressure management system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB893642A (en) * 1959-04-13 1962-04-11 Nash Engineering Co Process and apparatus for preventing losses from storage vessels for volatile liquids
FR2553500A1 (fr) * 1983-10-14 1985-04-19 Sihi Pompes Procede et dispositif de recuperation de vapeurs d'hydrocarbures

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB893642A (en) * 1959-04-13 1962-04-11 Nash Engineering Co Process and apparatus for preventing losses from storage vessels for volatile liquids
FR2553500A1 (fr) * 1983-10-14 1985-04-19 Sihi Pompes Procede et dispositif de recuperation de vapeurs d'hydrocarbures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002018032A2 (en) * 2000-08-31 2002-03-07 Harmse Barthlo Von Moltitz A method of treating an effluent gas stream, and apparatus for use in such method
WO2002018032A3 (en) * 2000-08-31 2002-05-30 Barthlo Von Moltitz Harmse A method of treating an effluent gas stream, and apparatus for use in such method
WO2020015963A1 (de) * 2018-07-19 2020-01-23 Thilo Ittner Thermoelektrischer oder thermomechanischer wandler und computergesteuerte oder elektronisch gesteuerte verfahren

Also Published As

Publication number Publication date
FR2553500B1 (fr) 1986-01-03
FR2553500A1 (fr) 1985-04-19

Similar Documents

Publication Publication Date Title
EP0535752B1 (de) Verfahren zur Verflüssigung von Erdgas
US4187689A (en) Apparatus for reliquefying boil-off natural gas from a storage tank
JP2918695B2 (ja) 高真空精油装置及び方法
EP0768502B1 (de) Verfahren und Vorrichtung zur Verflüssigung und Behandlung von Erdgas
CA2239758C (fr) Procede de degazolinage d'un gaz contenant des hydrocarbures condensables
US4617030A (en) Methods and apparatus for separating gases and liquids from natural gas wellhead effluent
US3266262A (en) Vapor recovery method and system
EP0731900B1 (de) Verfahren und einrichtung zur erdgasverflüssigung
FR2675891A1 (fr) Procede de production d'azote liquide en utilisant un gaz naturel liquefie comme seul refrigerant.
CH642271A5 (fr) Procede de separation d'un liquide organique d'un melange de liquide organique et de solvant et appareillage pour la mise en oeuvre de ce procede.
US5076822A (en) Vapor recovery system
EP1601443A2 (de) Verfahren und vorrichtung zur entfernung von kohlendioxid und schwefeldioxid durch desublimation in hinblick auf seine endlagerung
EP0198142A1 (de) Verfahren und Vorrichtung zum Zurückgewinnen von Kohlenwasserstoffdämpfen
EP4168515A2 (de) Verfahren zur rückgewinnung von kohlenwasserstoffgas
NO161235B (no) Apparat for rensing av luftaapninger i fyrkasser.
US20020117391A1 (en) High purity CO2 and BTEX recovery
KR20180110430A (ko) 선박의 증발가스 처리 시스템 및 방법
KR101996284B1 (ko) 선박의 증발가스 재액화 시스템
US2198098A (en) High pressure gas process
US11927391B2 (en) Liquefaction of production gas
EP0530062B1 (de) Verfahren zum Fraktionieren von Öl und Gas aus einem Produktstrom eines Ölgewinnungsfeldes
US5201918A (en) Apparatus and method for the capture and storage of volatile gases
KR20200081545A (ko) 극저온용 오일필터 및 상기 극저온용 오일필터가 적용된 선박용 증발가스 처리 시스템
RU2106903C1 (ru) Установка улавливания паров нефтепродуктов
EP0077519A1 (de) Vorrichtung zur Rückgewinnung von Kohlenwasserstoffen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870423

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BARRE, JEAN-LOUIS

Inventor name: PAUGAM, LOUIS