DE2832493A1 - Cleaning waste gases - with simultaneous heat recovery by cooling to low temp. - Google Patents

Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.

Info

Publication number
DE2832493A1
DE2832493A1 DE19782832493 DE2832493A DE2832493A1 DE 2832493 A1 DE2832493 A1 DE 2832493A1 DE 19782832493 DE19782832493 DE 19782832493 DE 2832493 A DE2832493 A DE 2832493A DE 2832493 A1 DE2832493 A1 DE 2832493A1
Authority
DE
Germany
Prior art keywords
exhaust gases
cooling
devices according
verfahren
cooled
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Withdrawn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
DE19782832493
Other languages
German (de)
Inventor
Albert Lammers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19782832493 priority Critical patent/DE2832493A1/en
Publication of DE2832493A1 publication Critical patent/DE2832493A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/009—Collecting, removing and/or treatment of the condensate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)

Abstract

To recover heat when cleaning waste gases, the gases are cooled to such low temps. and in the presence of water that N oxides and S oxides, excluding CO and CO2 form drops at the cooler surface. The acidic drops, which fall from the surface of the cooler, are collected in a vessel filled with a neutralising substance. Method saves 40-50% energy and provides the heat usually produced by several power stations. Reduces environmental pollution.

Description

Verfahren und VoVorrichtung zur l'armerückgewinnung undWärmerückgewinnung und Raini- Reini-Process and device for heat recovery and heat recovery and Raini- Reini-

gung von Abgasen.supply of exhaust gases.

Die zum Patent angemeldeten Verfahren und Vorrichtungen zeigen, wie die Wärmerückgewinnung + Reinigung von Abgasen durch Kühlung möglich ist, wobei die Schadgase als Tropfen mittels Kondensbildung mit dem Kondenswasser ausgeschieden werden Wenn man Abgase abkühlt, so kondensieren sich die Stickstoff-+ Schwefeloxyde mit dem Kondenswasser zu Säuretropfen an der Kühlanlage und werden so den Abgasen entzogen. Fs wird darum erfindungsgemäß vorgeschlagen, abgase auf so tiefe Temperaturen unter gleichzeitiger Wärmerückgewinnung abzukühlen, daß z.B "N"-gase + "S"-gase kondensieren und zusammen mit dem Kondenswasser als Tropfen an der Kühlvorrichtung hängen bleiben Damit die agressiven Säuretropfen nicht zerstörerisch wirken, wird erfindungsgemäß vorgeschlagen, die von der Kühlvorrichtung herunterfallenden Säuretropfen in einen Behälter mit neutralisierenden Stoffen fallen zu lassen Damit dei Säuretropfen sofort nach ihrem Niederschlag an der Kühlanlage in den Behälter mit den neutralisierenden Stoffen fallen, wird erfindungsgemäß vorgeschlagen, die Vorrichtung zum Kühlen vibrieren zu lassen. Für eine möglichst einfache und intensive Abkühlung der Abgase wird erfindungsgemäß vorgeschlagen, die Kühlmittel gegen die Strömungsrichtung der Abgase zu schicken Für eine einfache Wärmerückgewioung wird erfiningsgemäß vorgeschlagen, zuerst mit Kühlwasser und dann mittels Wärmepumpe zu kühlen, Damit die neutralisierten Abges-Tropfen als nutzbringendes Rohmaterial eingesetzt werden können, wird zur leichteren Weiterverarbeitung vorgeschlagen, mit solchen neutralisierenden Stoffen zu neutralisieren, welche das Endprodukt gut lagerfähig und leicht verarbeitbar machen Um die Abgase zu zwingen, an den Kühlschlangen vorbeizuwandern, so wird erfindungsgemäß vorgeschlagen, sei die Kühlvorrichtung ein Zylinder, der durch Vibrationen eine Kreisbewegung vollzieht und der die Kühlschlangen in der Art eines Gewindes enthält, sodaß die Abgase durch die extrem schnelle Kreis-Schwingung zu einer Art Schraube werden, welche skh wegschraubend mittels der Kühlschlangen zugleich abkühlt bis zur Tropfenbildung und damit Auskondensierung von "N"-gasen und l'S"-gasen sowie dem Kondenswasser. Da bei der Kreisschwingung keine Drehung um die eigene Achse stattfindet, so ist es möglich, die Unterseite der Kühlvorrichtung mit einem Sieb zu versehen zum Durchlaß der Säuretropfen für die Neutralisierung mittels der darunter befindlichen Neutralisatoren. Es wird darum erfindungsgemäß vorgeschlagen, die Unterseite der Kühlvorrichtung mit einem Sieb oder Löchern zu versehen.The patent-pending methods and devices show how the heat recovery + cleaning of exhaust gases by cooling is possible, whereby the pollutant gases are separated out as drops by means of condensation with the condensation water When exhaust gases are cooled down, the nitrogen + sulfur oxides condense with the condensation water to acid droplets on the cooling system and thus become the exhaust gases withdrawn. It is therefore proposed according to the invention to exhaust gases at such low temperatures to cool down with simultaneous heat recovery, e.g. "N" gases + "S" gases condense and together with the condensation water as drops on the cooling device get stuck So that the aggressive acid drops do not have a destructive effect proposed according to the invention, the acid droplets falling from the cooling device to drop into a container with neutralizing substances so that the acid drops Immediately after their precipitation on the cooling system in the container with the neutralizing Substances fall, it is proposed according to the invention to vibrate the device for cooling allow. According to the invention, the exhaust gases are cooled as simply and intensively as possible proposed to send the coolant against the direction of flow of the exhaust gases For a simple heat recovery, it is proposed according to the invention, first with Cooling water and then using a heat pump to cool, so that the neutralized Abges drops Can be used as a beneficial raw material for easier further processing suggested to neutralize with such neutralizing substances, which the Make the end product storable and easy to process In order to force the exhaust gases, To wander past the cooling coils, it is proposed according to the invention, be the cooling device is a cylinder that makes a circular motion through vibrations and which contains the cooling coils in the manner of a thread, so that the exhaust gases pass through the extremely fast circular oscillation turns into a kind of screw, which skh unscrewing by means of the cooling coils at the same time cools down to the formation of droplets and thus condensation of "N" gases and l'S "gases as well as the condensation water no rotation takes place around its own axis, so it is possible to use the underside to provide the cooling device with a sieve for Passage of the Acid drops for neutralization using the neutralizers below. It is therefore proposed according to the invention, the underside of the cooling device to be provided with a sieve or holes.

Für den Fall, daß zu wenig Kondenswasser für die Tropfen dung der Abgase vorhanden ist, wird erfindungsgemäß vorgeschlagen, daß tropfenweise in die noch heißen Abgase Wasser zugegeben wird.In the event that there is too little condensation for the drops Exhaust gases is present, it is proposed according to the invention that dropwise into the still hot exhaust water is added.

Vorteile: Völlige Reinigung von Schornsteinabgasen.Advantages: Complete cleaning of chimney flue gases.

Rückgewinnung der Abgaswärme. Recovery of exhaust gas heat.

Einsparung von 4~/0-50% Energie. Saving 4 ~ / 0-50% energy.

Einsparung mehrerer Kraftwerke. Saving several power plants.

Einsparung im Sozialen wegen viel besserer Atemluft. Social savings due to much better air to breathe.

Reduzieren des Co2 um 40% - 50. %. Reduce Co2 by 40% - 50%.

Reduzieren von CO, a) um Wert der Energieeinsparung, bj weiter durch den Sog der Kühlanlage=mehr 02 Bedenken wegen kühler Abgase, CO + C02 ? Dann müßte die Wärmepumpe auch verboten werden! Reduce CO, a) by value of energy saving, bj further through the suction of the cooling system = more 02 concerns about cool exhaust gases, CO + C02? Then would have to the heat pump will also be banned!

Claims (1)

Patentansprüche: 1 Verfahren und Vorrichtungen dadurch gekennzeichnet, daß Abgase auf so tiefe Temperaturen unter gleichzeitiger Wärmerückgewinnung abgekühlt werden, daß diese Abgase wie z.B. Claims: 1 method and devices characterized in that that exhaust gases are cooled to such low temperatures with simultaneous heat recovery that these exhaust gases such as e.g. Stckstoffoxyde + Schwefeloxyde mit Ausnahme von CO+C02 unter Tropfenbildung mittels Kondenswasser an der Kühlvorrichtung hängen bleiben. Oxides of nitrogen + sulfur oxides with the exception of CO + C02 with drop formation get stuck on the cooling device due to condensation. 2,Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß die von der Kühlvorrichtung herunt er fall enden Säuretropfen in einen Behälter mit neutralisierenden Stoffen fallen.2, the method according to claim 1, characterized in that the Cooling device, he falls falling acid droplets into a container with neutralizing Fabrics fall. 3.Verfahren und Vorrichtungen nach Anspruch 1+2 dadurch gekennzeichnet, daß die Kühlanlage vibriert.3.Verfahren and devices according to claim 1 + 2, characterized in that that the cooling system vibrates. 4*Verfahren und Vorrichtungen nach Anspruch 1-3 dadurch gekennzeichnet, daß die Kühlmittelsgegen die Strömungsrichtung der Abgase fließen.4 * method and devices according to claims 1-3 characterized that the coolants flow against the direction of flow of the exhaust gases. 5.Verfahren und Vorrichtungen nach Anspruch 1-4 dadurch gekennzeichnet, daß zuerst mit Kühlwasser und dann mittels Wärmepumpe die Abgase gekühlt werden.5.Verfahren and devices according to claim 1-4, characterized in that that the exhaust gases are cooled first with cooling water and then with a heat pump. 6.Verfahren und Vorrichtungen nach Anspruch 1-5 dadurch gekennzeichnet, daß zur Neutralisierung so'ehe Stoffe eingesetzt werden, die nach der Verbindung mit den auskondensierten Abgasen gut lagerfähig und leicht verarbeitbar sind.6.Verfahren and devices according to claim 1-5, characterized in that that for neutralization so'ehe substances are used that after the connection are easy to store and easy to process with the condensed exhaust gases. 7.Verfahren und VorrichtunOGXnach Anspruch 1-6 dadurch gekennzeichnet, daß die Kühlvorrichtung ein Zylinder sei, der durch Vibrationen eine Kreisbewegung vollzieht und der die Kühlschlangen in der Art eines Gewindes enthält, aber der art, daß die Abgase durch die extrem schnelle Kreisschwingung wegg eschraub t=w egb e fördert werden dabei an den-Kühlschlangen bis zur Tropfenbildung abgekühlt werden.7.Verfahren und VorrichtunOGX according to claims 1-6 characterized in that that the cooling device is a cylinder that vibrates in a circular motion and which contains the cooling coils in the manner of a thread, but the way that the exhaust gases are wegg eschraub t = w egb e promotes are cooled on the cooling coils until droplets are formed will. 8.Verfahren und Vorrichtungen nach Anspruch 1-7 dadurch gekennzeichnet, daß die Unterseite der Kühlvorrichtung gelocht ist oder ein Sieb enthält statt anderer Wandung.8.Verfahren and devices according to claims 1-7, characterized in that that the underside of the cooler is perforated or contains a sieve instead of others Wall. 9eVerfahren und Vorrichtungen nach Anspruch 1-8 dadurch gekennzeichnet, daß den noch heißen Abgasen tropfenweise Wasser zugesetzt wird.9eMethods and devices according to Claims 1-8, characterized in that that the still hot exhaust gases water is added dropwise.
DE19782832493 1978-07-24 1978-07-24 Cleaning waste gases - with simultaneous heat recovery by cooling to low temp. Withdrawn DE2832493A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782832493 DE2832493A1 (en) 1978-07-24 1978-07-24 Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782832493 DE2832493A1 (en) 1978-07-24 1978-07-24 Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.

Publications (1)

Publication Number Publication Date
DE2832493A1 true DE2832493A1 (en) 1980-02-07

Family

ID=6045265

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782832493 Withdrawn DE2832493A1 (en) 1978-07-24 1978-07-24 Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.

Country Status (1)

Country Link
DE (1) DE2832493A1 (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548036A1 (en) * 1983-06-30 1985-01-04 Supratherm Sarl Process for purifying hot gases by condensation
US4844881A (en) * 1986-02-24 1989-07-04 The Boc Group, Inc. Process for the production of sulfur from hydrogen sulfide using high concentration oxygen and recycle in combination with a scrubbing tower
US7641717B2 (en) 2004-08-06 2010-01-05 Eig, Inc. Ultra cleaning of combustion gas including the removal of CO2
US7846240B2 (en) 2008-10-02 2010-12-07 Alstom Technology Ltd Chilled ammonia based CO2 capture system with water wash system
US8168149B2 (en) 2007-12-05 2012-05-01 Alstom Technology Ltd Promoter enhanced chilled ammonia based system and method for removal of CO2 from flue gas stream
US8182577B2 (en) 2007-10-22 2012-05-22 Alstom Technology Ltd Multi-stage CO2 removal system and method for processing a flue gas stream
US8292989B2 (en) 2009-10-30 2012-10-23 Alstom Technology Ltd Gas stream processing
US8293200B2 (en) 2009-12-17 2012-10-23 Alstom Technology Ltd Desulfurization of, and removal of carbon dioxide from, gas mixtures
US8329128B2 (en) 2011-02-01 2012-12-11 Alstom Technology Ltd Gas treatment process and system
US8404027B2 (en) 2008-11-04 2013-03-26 Alstom Technology Ltd Reabsorber for ammonia stripper offgas
US8518156B2 (en) 2009-09-21 2013-08-27 Alstom Technology Ltd Method and system for regenerating a solution used in a wash vessel
US8623307B2 (en) 2010-09-14 2014-01-07 Alstom Technology Ltd. Process gas treatment system
US8673227B2 (en) 2009-09-15 2014-03-18 Alstom Technology Ltd System for removal of carbon dioxide from a process gas
US8728209B2 (en) 2010-09-13 2014-05-20 Alstom Technology Ltd Method and system for reducing energy requirements of a CO2 capture system
US8784761B2 (en) 2009-11-20 2014-07-22 Alstom Technology Ltd Single absorber vessel to capture CO2
US8790605B2 (en) 2009-09-15 2014-07-29 Alstom Technology Ltd Method for removal of carbon dioxide from a process gas
US8864879B2 (en) 2012-03-30 2014-10-21 Jalal Askander System for recovery of ammonia from lean solution in a chilled ammonia process utilizing residual flue gas
US8986640B1 (en) 2014-01-07 2015-03-24 Alstom Technology Ltd System and method for recovering ammonia from a chilled ammonia process
US9028784B2 (en) 2011-02-15 2015-05-12 Alstom Technology Ltd Process and system for cleaning a gas stream
US9162177B2 (en) 2012-01-25 2015-10-20 Alstom Technology Ltd Ammonia capturing by CO2 product liquid in water wash liquid
US9174168B2 (en) 2009-11-12 2015-11-03 Alstom Technology Ltd Flue gas treatment system
US9447996B2 (en) 2013-01-15 2016-09-20 General Electric Technology Gmbh Carbon dioxide removal system using absorption refrigeration

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548036A1 (en) * 1983-06-30 1985-01-04 Supratherm Sarl Process for purifying hot gases by condensation
US4844881A (en) * 1986-02-24 1989-07-04 The Boc Group, Inc. Process for the production of sulfur from hydrogen sulfide using high concentration oxygen and recycle in combination with a scrubbing tower
US7641717B2 (en) 2004-08-06 2010-01-05 Eig, Inc. Ultra cleaning of combustion gas including the removal of CO2
US8308849B2 (en) 2004-08-06 2012-11-13 Alstom Technology Ltd Ultra cleaning of combustion gas including the removal of CO2
US8182577B2 (en) 2007-10-22 2012-05-22 Alstom Technology Ltd Multi-stage CO2 removal system and method for processing a flue gas stream
US8168149B2 (en) 2007-12-05 2012-05-01 Alstom Technology Ltd Promoter enhanced chilled ammonia based system and method for removal of CO2 from flue gas stream
US7846240B2 (en) 2008-10-02 2010-12-07 Alstom Technology Ltd Chilled ammonia based CO2 capture system with water wash system
US8758493B2 (en) 2008-10-02 2014-06-24 Alstom Technology Ltd Chilled ammonia based CO2 capture system with water wash system
US8764892B2 (en) 2008-11-04 2014-07-01 Alstom Technology Ltd Reabsorber for ammonia stripper offgas
US8404027B2 (en) 2008-11-04 2013-03-26 Alstom Technology Ltd Reabsorber for ammonia stripper offgas
US8790605B2 (en) 2009-09-15 2014-07-29 Alstom Technology Ltd Method for removal of carbon dioxide from a process gas
US8673227B2 (en) 2009-09-15 2014-03-18 Alstom Technology Ltd System for removal of carbon dioxide from a process gas
US8518156B2 (en) 2009-09-21 2013-08-27 Alstom Technology Ltd Method and system for regenerating a solution used in a wash vessel
US8292989B2 (en) 2009-10-30 2012-10-23 Alstom Technology Ltd Gas stream processing
US9174168B2 (en) 2009-11-12 2015-11-03 Alstom Technology Ltd Flue gas treatment system
US8784761B2 (en) 2009-11-20 2014-07-22 Alstom Technology Ltd Single absorber vessel to capture CO2
US8293200B2 (en) 2009-12-17 2012-10-23 Alstom Technology Ltd Desulfurization of, and removal of carbon dioxide from, gas mixtures
US8728209B2 (en) 2010-09-13 2014-05-20 Alstom Technology Ltd Method and system for reducing energy requirements of a CO2 capture system
US8623307B2 (en) 2010-09-14 2014-01-07 Alstom Technology Ltd. Process gas treatment system
US8329128B2 (en) 2011-02-01 2012-12-11 Alstom Technology Ltd Gas treatment process and system
US9028784B2 (en) 2011-02-15 2015-05-12 Alstom Technology Ltd Process and system for cleaning a gas stream
US9162177B2 (en) 2012-01-25 2015-10-20 Alstom Technology Ltd Ammonia capturing by CO2 product liquid in water wash liquid
US9687774B2 (en) 2012-01-25 2017-06-27 General Electric Technology Gmbh Ammonia capturing by CO2 product liquid in water wash liquid
US8864879B2 (en) 2012-03-30 2014-10-21 Jalal Askander System for recovery of ammonia from lean solution in a chilled ammonia process utilizing residual flue gas
US9447996B2 (en) 2013-01-15 2016-09-20 General Electric Technology Gmbh Carbon dioxide removal system using absorption refrigeration
US8986640B1 (en) 2014-01-07 2015-03-24 Alstom Technology Ltd System and method for recovering ammonia from a chilled ammonia process

Similar Documents

Publication Publication Date Title
DE2832493A1 (en) Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.
DE68907116T2 (en) Process for reducing the content of non-condensable elements which are contained in and are soluble in flue gases containing condensable elements.
DE19505231A1 (en) Process for cleaning gases with water
EP0439731A1 (en) Process for the thermal separation of a water/oil-emulsion
DE3716610C2 (en)
DE3520885C3 (en) Method and plant for the substantial residual removal of gaseous, aerosol-like and / or dust-like pollutants
DE69006017T2 (en) DEVICE AND METHOD FOR ELIMINATING AIR POLLUTION.
DE69515934T2 (en) FILTER SYSTEM FOR POLLUTANT PARTICLES FROM SMOKE GAS OR GASES THROUGH SPRAYING AND DEEP FREEZING
ATE23452T1 (en) METHOD FOR PURIFICATION OF AQUEOUS LIQUIDS CONTAINING VENTILATION AIR, WHICH HAVE BEEN COOVENED DURING COOLING OR LUBRICATION OF CONVERTING MACHINES, ESPECIALLY ROLLING MILLS, AND DEVICE THEREOF.
DE2736488C3 (en) Process for removing sulfur oxides from flue gases
TWI473671B (en) A waste disposal methods of the renewable energy
DE4334442B4 (en) Method and device for separating condensate from polluted exhaust air
DE69706855T2 (en) METHOD AND DEVICE FOR CLEANING THE FLUE GAS
DE760924C (en) Process for the production of hydrocyanic acid
DE2732418A1 (en) Thermal treatment of refuse - by low temp. carbonisation and passing gases through fixed ceramic bed
DE2113821A1 (en) Method and device for air sterilization
DE214070C (en)
DE1127873B (en) Process for the condensation of a sublimate from a hot carrier gas and device for carrying out this process
DE202024001203U1 (en) Cleaning of exhaust air by condensation with heat recovery
DE2061715C3 (en) Device for separating toxic components from exhaust gases
AT133644B (en) Process and device for the production of liquid and solid carbon dioxide from exhaust gases.
AT97677B (en) Process and device for utilizing the exhaust gases from greenhouse heating.
DE205963C (en)
DE501063C (en) Process for electrical tar removal from gases
AT19706B (en) Process and device for distillation, separation or extraction of volatile liquids alone or in connection with solid substances in closed vessels.

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee