DD299996A7 - A method of removing the hydrogen sulfide content from combustible gases (e.g., biogas / landfill gas) through a biofilter with regulated oxygen input - Google Patents
A method of removing the hydrogen sulfide content from combustible gases (e.g., biogas / landfill gas) through a biofilter with regulated oxygen input Download PDFInfo
- Publication number
- DD299996A7 DD299996A7 DD329131A DD32913189A DD299996A7 DD 299996 A7 DD299996 A7 DD 299996A7 DD 329131 A DD329131 A DD 329131A DD 32913189 A DD32913189 A DD 32913189A DD 299996 A7 DD299996 A7 DD 299996A7
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- oxygen
- gas
- hydrogen sulfide
- biogas
- purified
- Prior art date
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Senkung des Schwefelwasserstoffgehaltes aus schwefelwasserstoffhaltigen brennbaren Gasen (z.B. Biogasen/Deponieg äsen). Der im Gas enthaltene Schwefelwasserstoff wird durch biologische Oxidation unter Sauerstofflimitierung im Biofilter in nichttoxische Stoffe überführt, so daß eine uneingeschränkte Verwertung der Gase zur Energiegewinnung möglich ist.The invention relates to a process for lowering the hydrogen sulphide content from hydrogen sulphide-containing combustible gases (for example biogas / landfill gas). The hydrogen sulfide contained in the gas is converted by biological oxidation under oxygen limitation in the biofilter in non-toxic substances, so that an unrestricted utilization of the gases for energy production is possible.
Biogas wird in kommunalen Abwasserbehandlungsanlagen, in Güüebehandlungsanlagen und Mülldeponien (Deponiegas) durch anaerobe Fermentation erzeugt. Die Mikroorganismenflora stellt eine durch Milieubedingungen wie Substrat, Temperatur, pH-Wer·;, Sulfatgehalt und andere Faktoren bestimmte komplexe Mischkultur dar, in der Vertreter aller Arten von Mikroorganismen verschiedune Wechselbeziehungen untereinander eingehen. Dabei werden hochmolekulare organische Verbindungen über mehrere simultan ablaufende Stufen in das energiereiche Biogas/Deponiegas überführt. Die spezifischen Substratzusammensetzungen und Fei mentationstechnologion bedingen unterschiedliche Produktgaszusammensetzungen. Bei mittleren Belastungen und beheizten Faulräumen ergeben sich mittlere Gaszusammensetzungen von:Biogas is produced in municipal wastewater treatment plants, in güüebehandlungsanlagen and landfills (landfill gas) by anaerobic fermentation. The microbial flora represents a complex mixed culture determined by environmental conditions such as substrate, temperature, pH, sulfate content and other factors, in which representatives of all types of microorganisms undergo different interactions with each other. High molecular weight organic compounds are transferred to the high-energy biogas / landfill gas via several simultaneously running stages. The specific substrate compositions and filtration technology require different product gas compositions. For medium loads and heated plenums, mean gas compositions of:
Aufgrund seiner toxischen, korrosiven und umweltschädlichen Eigenschaften sollte der Schwefelwasserstoffgehalt im Biogns reduziert werden. So dürfen bei der Verwertung des Gases in Gasmotoren oder zu Heizzwecken bestimmte Toleranzbereiche (<0,05Vol.-%) nicht überschritter, werden. Es ist bekannt, daß der im Biogas enthaltene Schwefelwasserstoff technisch auf vier Arten reduziert werden kann.Due to its toxic, corrosive and environmentally harmful properties, the hydrogen sulphide content in Biogns should be reduced. For example, when using the gas in gas engines or for heating purposes, certain tolerance ranges (<0.05% by volume) must not be exceeded. It is known that the hydrogen sulphide contained in the biogas can be technically reduced in four ways.
Als erstes besteht die Möglichkeit, den Schwefelwasserstoffgehalt durch konstruktive Maßnahmen am Fermenter zu senken. Die DD 232685 und DD 232686 beschreiben eine Lösung, in der die Hydrolyse und die Säurefermentation von der Methanphase räumlich getrennt werden.First, there is the possibility to reduce the hydrogen sulfide content by constructive measures on the fermenter. DD 232685 and DD 232686 describe a solution in which the hydrolysis and acid fermentation are spatially separated from the methane phase.
Der als Reaktionsprodukt in der Säurephase entstandene und im Substrat gelöste Schwefelwasserstoff wird infolge der mit der Aufwärtsströmung einhergehenden Druckreduzierung desorbiert und aufgefangen. Das von Schwefelwasserstoff weitgehend befreite Substrat wird dann der Methanphase zugeführt. Diese bekannte technische Lösung hat den Nachteil, <i' ß die dann nötige Fermenterkonstruktion äußerst kompliziert ist und zudem Restgehaite an Schwefelwasserstoff aufgrund der physikalischen Bedingungen unvermeidbar sind.The resulting as reaction product in the acid phase and dissolved in the substrate hydrogen sulfide is desorbed and collected as a result of the pressure reduction associated with the upward flow. The hydrogen sulfide largely freed substrate is then fed to the methane phase. This known technical solution has the disadvantage that the then necessary fermenter construction is extremely complicated and also residual content of hydrogen sulfide due to the physical conditions are unavoidable.
-2- 299-2- 299
Eine zweite Möglichkeit besteht in der ndsorptiven Bindung des *u entfernenden Schwefelwassei stoffes an eisenerzhaltiger Reinigermasso, Aktivkohle, Silica-gel oder pelletiortem Kiesbrand. Diese bekannten Verfahren arbeiten sehr effektiv, besitzen aber den Nachteil, daß die Aufarbeitung der Reinigermasse mit speziellen Zusatzstoffen aufwendig und somit iinökonomisch ist. Zudem ist das gewonnene Biogas/Deponiegas bei mesophilem Fermentationsbetrieb wasseidampfgusättigt, so daß es infolge einer Überfeuchtung innerhalb des Adsorbers zu Verklumpungen und Rissen des Filteroettes komm.' und somit eine Wasserdampfatischeidung nötig ist.A second possibility consists in the nonsorptive binding of sulfuric acid which removes sulfuric anhydride, activated carbon, silica gel or pelleted gravel fire. These known methods work very effectively, but have the disadvantage that the workup of the cleaner composition with special additives is complex and thus iinökonomisch. In addition, the recovered biogas / landfill gas is gefässidampfgusättigt in mesophilic fermentation, so that it comes as a result of over-humidification within the adsorber to clumping and cracks of the filter oil. and thus a Wasserdampfatischidung is necessary.
Eine dritte Möglichkeit besteht in der Absorption des zu enttarnenden Schwefelwasserstoffes in (ieeigntten Waschlösungen und nachfolgenden Aufarbeitungsstufen, da Schwefelwasserstoff in wäßrigen f.ösungen gut lösbar ist, wie z.3. bei der chemischen Oxidation des gelösten Schwefelwasserstoffes (CH 630 587) zu Schwefeldioxid oder Sulfat. Die Reaktionsprodukte können durch Überführung in wasserunlösliche Verbindungen, z.B. Calciumsulfat (SU 1386587), ausgefällt werden. Eine vierte Möglichkeit besteht darin, eine solche Menge Luft mit dem abzubauenden Substrat einz'ibringen, daß sich im bildenden Biogas (nicht für Deponiegas) ein Restsauerstoffgehalt von bin zu 3,0VoI.-%, vorzugsweise 0,1 Vol.-% einstellt (DE 3335265), wodurch die sulfatreduzierenden Mikroorganismen, und dadurch die Schwefelwasserstoffproduktion, gehemmt werden. Dieses Verfahren hat offensichtlich den Nachteil, daß im Fermenter aerobe Zonen entstehen, die die Aktivität der anaerohen Meihanbak.'erien verringern und somit die Biogasausbeute bezogen auf das Reaktorvolumen negativ beeinträchtigen.A third possibility consists in the absorption of the hydrogen sulfide to be dissolved in suitable washing solutions and subsequent work-up stages, since hydrogen sulphide is readily soluble in aqueous solutions, such as, for example, in the chemical oxidation of the dissolved hydrogen sulphide (CH 630 587) to sulfur dioxide or The reaction products can be precipitated by conversion into water-insoluble compounds, for example calcium sulfate (SU 1386587) A fourth possibility is to introduce such an amount of air with the substrate to be degraded that is present in the forming biogas (not for landfill gas) The residual oxygen content of bin is 3.0% by volume, preferably 0.1% by volume (DE 3335265), which inhibits the sulphate-reducing microorganisms and thereby hydrogen sulphide production. This process obviously has the disadvantage that aerobic zones are present in the fermenter arise that the activity of the anaeroe Meihanbak.'erien verrin like and thus negatively affect the biogas yield based on the reactor volume.
un'.er S/iuerstofflimitierung, welche durch einen geschlossenen Regelkreis erzeugt wird, zu elementarem Schwefel i'nd/oderuni.suerstofimitierung, which is generated by a closed loop, to elemental sulfur i'nd / or
wird im Gleichstrom zum Biogas/Deponiegas zugeführt. Das Biogas/Luft-Gemisch bzw. Biogus/Sauerstoff-Gemisch Wird über eino Gasverteilungsvorrichtung, zweckmäßigerweise einen Gasverteilungsring, durch des Filterbett geführt. Als Trägermaterial für die zu fixierende Mikroorganismenpopulatioo, kann der Bioreaktor z. B. Torf, Torf-Reisig-Gemische oder MüllkGmpost mit einer definierten Feuchtigkeit enthalten, das im unteren Teil dos Rioreaktors gelagert ist. Dieses Trägermaterial sollte eineis fed in co-current to biogas / landfill gas. The biogas / air mixture or biogas / oxygen mixture is passed through the filter bed via a gas distribution device, expediently a gas distribution ring. As a carrier material for the Mikroorganismenpopulatioo to be fixed, the bioreactor z. B. peat, peat-brushwood mixes or MüllkGmpost with a defined moisture contained, which is stored in the lower part dos Rioreaktors. This substrate should have a
in dem die Stoffwechselvorgänge der Mikroorganismen ablaufen.in which the metabolic processes of the microorganisms take place.
gemessen und registriert.measured and registered.
mit der Saueretoffmeßeinrichtung on line gekoppeltem Steuerrechner erfaßt. Dieser steuert nach einem speziellen Algorithmus den Verdichter für die Luftzufuhr, oder aber ein entsprechendes elektrisches Regelventil, bei reiner Sauerstoffzufuhr, innerhalb der Oxidationsmittelzufuhr, so daß sich die Sauerstoffkonzentration im Gasteil, daß zur Bioga.s/Deponiegasverwertung zugeführt wird, einstellt. Diese Verfahrensweise erweist sich als vorteilhaft, weil durch diese Regelung das Zustandekommen eines explosiblen Gas-Luft-Gemischeö vermieden wird.with the Saueretoffmeßeinrichtung on line coupled control computer detected. This controls according to a special algorithm, the compressor for the air supply, or a corresponding electrical control valve, with pure oxygen supply, within the oxidant supply, so that the oxygen concentration in the gas part that is supplied to Bioga.s / landfill gas utilization adjusts. This procedure proves to be advantageous because the formation of an explosive gas-air mixtures is prevented by this rule.
zugeführt. Der Regelalgorithmus muß infolge der großen Verzögerungszeiten zwischen Sauerstoffeintrag undfed. The control algorithm must due to the large delay times between oxygen input and
aufgegeben werden, die für die rnikrobielle Tätigkeit der Mikroorganismen nötig sind, so daß eine wesentlichewhich are necessary for the microbial activity of the microorganisms, so that an essential
schwankt bzw. nicht bekannt ist.fluctuates or is unknown.
herrschen, die durch einen speziell an das System angepaßten mathematischen Algorithmus hinreichend ausregelbar sind.prevail, which are sufficiently ausgerebar by a specially adapted to the system mathematical algorithm.
Claims (4)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD329131A DD299996A7 (en) | 1989-06-01 | 1989-06-01 | A method of removing the hydrogen sulfide content from combustible gases (e.g., biogas / landfill gas) through a biofilter with regulated oxygen input |
ES90110245T ES2053009T3 (en) | 1989-06-01 | 1990-05-30 | PROCEDURE FOR THE ELIMINATION OF HYDROGEN SULFIDE FROM A COMBUSTIBLE EXHAUST GAS. |
DK90110245.9T DK0402704T3 (en) | 1989-06-01 | 1990-05-30 | Process for removing hydrogen sulfide from a combustible waste gas |
AT9090110245T ATE104565T1 (en) | 1989-06-01 | 1990-05-30 | PROCESS FOR REMOVING HYDROGEN SULFIDE FROM A COMBUSTIBLE EXHAUST GAS. |
DE59005408T DE59005408D1 (en) | 1989-06-01 | 1990-05-30 | Process for removing hydrogen sulfide from a combustible exhaust gas. |
EP90110245A EP0402704B1 (en) | 1989-06-01 | 1990-05-30 | Method of removing hydrogen sulphide from combustible exhaust gases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD329131A DD299996A7 (en) | 1989-06-01 | 1989-06-01 | A method of removing the hydrogen sulfide content from combustible gases (e.g., biogas / landfill gas) through a biofilter with regulated oxygen input |
Publications (1)
Publication Number | Publication Date |
---|---|
DD299996A7 true DD299996A7 (en) | 1992-05-21 |
Family
ID=5609582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD329131A DD299996A7 (en) | 1989-06-01 | 1989-06-01 | A method of removing the hydrogen sulfide content from combustible gases (e.g., biogas / landfill gas) through a biofilter with regulated oxygen input |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0402704B1 (en) |
AT (1) | ATE104565T1 (en) |
DD (1) | DD299996A7 (en) |
DE (1) | DE59005408D1 (en) |
DK (1) | DK0402704T3 (en) |
ES (1) | ES2053009T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043538A1 (en) * | 2006-09-12 | 2008-03-27 | LAMBDA Gesellschaft für Gastechnik mbH | Treating a landfill gas formed from the waste dumped at landfills comprises permeating the gas through multilayer bio-filters comprising three or more segments having a filter material packing and a separately regulated gas supply |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4042009C2 (en) * | 1990-12-22 | 1999-09-09 | Hoelzemann Metallverarbeitung | Process for the biological processing of waste rubber |
US5490933A (en) * | 1991-04-04 | 1996-02-13 | The Dow Chemical Company | Self-regulated biological scrubber and/or gas stripper for the treatment of fluid streams |
EP0660745A1 (en) * | 1992-09-16 | 1995-07-05 | Rotron Incorporated | Biofilter with modular trays |
ES2129351B1 (en) * | 1997-02-07 | 2000-04-01 | Univ Cadiz | AUTOMATED SYSTEM FOR THE ELIMINATION OF SULFHIDRIDO FROM BIOGAS PRODUCED IN WASTEWATER PLANTS, WITH BIOLOGICAL DELIVERY RECOVERY. |
ES2288511T3 (en) | 2001-05-03 | 2008-01-16 | Bord Na Mona | PROCESS AND APPARATUS FOR THE BIOFILTRATION OF VOLATILE ORGANIC COMPOUNDS. |
DE102005026587A1 (en) * | 2005-05-27 | 2006-11-30 | Kaufmann, Jürgen | Process and apparatus for the treatment of biogas or biogas |
EP3175908B1 (en) * | 2015-12-03 | 2020-07-15 | Anua Clean Air International Limited | A method and apparatus for cleaning a contaminated air stream in a reactor with marine shell material |
CN111841301B (en) * | 2020-07-23 | 2022-03-11 | 赵莉莉 | Garbage deodorization method and system |
EP3950252B1 (en) | 2020-08-05 | 2024-03-13 | RubberSubstitute4.0 SA | Process for devulcanisation of rubber particles |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421534A (en) * | 1974-06-24 | 1983-12-20 | Welles Products Corporation | Tower for removing odors from gases |
GB2071633B (en) * | 1980-03-07 | 1984-02-08 | Kubota Ltd | Waste water treating apparatus |
DE3300402A1 (en) * | 1983-01-07 | 1984-10-11 | Hoechst Ag, 6230 Frankfurt | Process for removing hydrogen sulphide from gases or liquids, and microorganism for carrying out the process |
NL8303031A (en) * | 1983-08-31 | 1985-03-18 | Tongeren Ingbureau Bv Van | METHOD AND APPARATUS FOR BIOLOGICAL FILTRATION OF GASES. |
DE3542345A1 (en) * | 1985-11-29 | 1987-06-04 | Imhausen Chemie Gmbh | METHOD FOR REMOVING SULDURATE FROM EXHAUST GAS |
-
1989
- 1989-06-01 DD DD329131A patent/DD299996A7/en unknown
-
1990
- 1990-05-30 ES ES90110245T patent/ES2053009T3/en not_active Expired - Lifetime
- 1990-05-30 EP EP90110245A patent/EP0402704B1/en not_active Expired - Lifetime
- 1990-05-30 AT AT9090110245T patent/ATE104565T1/en not_active IP Right Cessation
- 1990-05-30 DK DK90110245.9T patent/DK0402704T3/en active
- 1990-05-30 DE DE59005408T patent/DE59005408D1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043538A1 (en) * | 2006-09-12 | 2008-03-27 | LAMBDA Gesellschaft für Gastechnik mbH | Treating a landfill gas formed from the waste dumped at landfills comprises permeating the gas through multilayer bio-filters comprising three or more segments having a filter material packing and a separately regulated gas supply |
Also Published As
Publication number | Publication date |
---|---|
DK0402704T3 (en) | 1994-05-24 |
ATE104565T1 (en) | 1994-05-15 |
EP0402704A1 (en) | 1990-12-19 |
EP0402704B1 (en) | 1994-04-20 |
DE59005408D1 (en) | 1994-05-26 |
ES2053009T3 (en) | 1994-07-16 |
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