KR20120119755A - Low temperature biogas separation method - Google Patents

Low temperature biogas separation method Download PDF

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KR20120119755A
KR20120119755A KR1020110037921A KR20110037921A KR20120119755A KR 20120119755 A KR20120119755 A KR 20120119755A KR 1020110037921 A KR1020110037921 A KR 1020110037921A KR 20110037921 A KR20110037921 A KR 20110037921A KR 20120119755 A KR20120119755 A KR 20120119755A
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biogas
gas
siloxane
carbon dioxide
moisture
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KR1020110037921A
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Korean (ko)
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김문식
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(주) 화인에너지
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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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • 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
    • B01D53/26—Drying gases or vapours
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/20—Capture or disposal of greenhouse gases of methane
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Abstract

PURPOSE: A biogas separating method under low temperatures is provided to separate and recycle methane gas and carbon dioxide gas from biogas which is generated from a food waste and livestock excrement treatment process. CONSTITUTION: Biogas generated from raw materials is stored in a bio gas storing bath(105). The raw materials are composed of food waste or livestock excrements. Sulfide and siloxane are removed from the biogas(106, 107). The biogas without the sulfide and the siloxane is compressed(108). The moisture is removed from the compressed biogas(109). The biogas without the moisture passes through a membrane filter to be separated into carbon dioxide gas and methane gas(110). The membrane filter is made of polystyrene and is in the structure of a hollow fiber membrane. [Reference numerals] (AA) Storing carbon dioxide gas; (BB) Purification; (CC) Storing methane gas

Description

저온 바이오가스 분리방법{LOW TEMPERATURE BIOGAS SEPARATION METHOD}LOW TEMPERATURE BIOGAS SEPARATION METHOD}

본 발명은 저온 바이오가스 분리방법에 관한 것으로서 더욱 상세하게는 축산분뇨 또는 음식물쓰레기로부터 발생하는 바이오가스를 이산화탄소가스와 메탄가스로 분리하는 방법을 제공하여 지구온실을 유발하는 가스를 감축하면서 재이용 가능한 신 재생에너지를 자원화할 수 있도록 하기 위한 방법의 제공에 관한 것이다.The present invention relates to a method for separating low temperature biogas, and more particularly, to provide a method for separating biogas generated from livestock waste or food waste into carbon dioxide gas and methane gas, thereby reducing the gas that causes global warming. The present invention relates to the provision of a method for making renewable energy resources.

바이오가스는 음식물쓰레기 또는 축산분뇨를 혐기상태에서 메탄화 미생물에 의하여 저압의 바이오가스가 발생하게 되는 데, 이 바이오가스에는 메탄가스와 이산화탄소가스가 주를 이루고 있으며, 부수적으로 황화수소가스, 암모니아가스, 지방산가스, 먼지, 습기 등을 함유하게 된다.In biogas, low pressure biogas is generated by methanation microorganism in anaerobic state of food waste or livestock manure, and methane gas and carbon dioxide gas are mainly composed of hydrogen sulfide gas, ammonia gas, Fatty acid gas, dust, moisture, etc. will be contained.

이러한 바이오가스를 대체원료로의 확보가 용이하고 유기물 함유량이 많고 염기소화 후에는 기능성 액비로의 사용이 가능한 등의 장점이 있는 반면에, 원료로부터 발생하는 악취와 더불어 바이오가스의 주성분인 메탄가스와 이산화탄소가스의 경우에는 지구온난화 또는 지구온실화의 주된 원인으로 밝혀져 현재 산업분야, 농,축산분야 일반생활분야 등에서 최소화하려는 노력을 기울이고 있는 실정이다.While it is easy to secure such biogas as an alternative raw material, has a high organic matter content, and can be used as a functional liquid after base digestion, it can be used as a functional liquid fertilizer. In the case of carbon dioxide gas, it has been found to be the main cause of global warming or global warming, and currently, efforts are being made to minimize it in the industrial, agricultural, livestock, and general living fields.

종래에는 상기와 같은 바이오가스는 도 2에 도시된 바와 같이, 음식물쓰레기 또는 축산분뇨로 구성되는 원료(1)를 발효조(2)에 투입하여 혐기상태에서 발효시켜 바이오가스를 발생시키고, 이러한 바이오가스는 바이오가스저장조(3)에 저장한 후 산업, 가정, 농축산용의 연료로만 사용하고 있는 실정이다.Conventionally, as shown in FIG. 2, the biogas as described above is introduced into a fermentation tank 2 with a raw material 1 consisting of food waste or livestock manure, and fermented in an anaerobic state to generate biogas. After being stored in the biogas storage tank (3), the situation is used only as fuel for industrial, household, agricultural and livestock.

이와 같이 바이오가스를 연소시켜 열원으로 사용하는 형태의 경우에는 바이오가스에 함유된 메탄가스를 연소시켜 보일러를 가동시켜 난방을 수행하는 것은 물론, 터빈 작동에 필요한 열원으로 사용하게 되므로 전기에너지를 생산하는 용도 등으로 폭넓게 활용되고 있는 것은 사실이다.As such, in the case of burning biogas as a heat source, since the methane gas contained in the biogas is combusted, the boiler is operated to perform heating and is used as a heat source for turbine operation. It is true that it is widely used for uses.

그러나, 바이오가스를 연소하는 과정에서는 불순물에 해당하는 먼지와 습기 등은 제거될 수 있으나, 황화수소가스, 암모니아가스, 지방산가스와 이산화탄소가스는 그대로 대기중으로 방출되는 상태가 된다.However, in the process of burning biogas, dust and moisture corresponding to impurities can be removed, but hydrogen sulfide gas, ammonia gas, fatty acid gas and carbon dioxide gas are released into the atmosphere as they are.

이와 같이 대기중으로 방출되는 황화수소가스, 암모니아가스, 지방산가스에 의해서는 악취가 발생하는 원인이 되므로 재처리시설의 주변 대기환경이 좋지 못하고 쾌적성을 유지하지 못하게 되므로 혐오시설로 인식되어 설비 등의 설치를 반대하고 있는 현상이 빈번하게 일어나고 있다.In this way, hydrogen sulfide gas, ammonia gas, and fatty acid gas released into the air may cause bad odors. Therefore, the surrounding air environment of the reprocessing facility is not good and the comfort cannot be maintained. Opposition to this is happening frequently.

그리고, 이산화탄소가스는 자체적으로 독성을 가지고 있는 것은 아니나, 주지하는 바와 같이 산업화 등의 영향으로 이산화탄소가 증가하게 되면서 가장 이슈가 되고 있는 점은 지구 온난화인 것이다.In addition, carbon dioxide gas is not toxic in itself, but as is well known, global warming is a major issue as carbon dioxide increases due to industrialization.

지구온난화는 온실효과라고도 말하며, 이산화탄소가스의 증가로 이산화탄소가스가 지구 밖으로 방출되는 열(지구복사)을 흡수하게 되고, 이로 인하여 복사열을 대기 밖으로 나가지 못하게 차단하는 형태가 되므로 지구의 온도가 올라가게 되는 것이다.Global warming is also called the greenhouse effect, and the increase in carbon dioxide gas absorbs the heat (earth radiation) emitted by the carbon dioxide out of the earth, which in turn causes the radiant heat to go out of the atmosphere, thereby raising the temperature of the earth. .

이러한 결과로서 근자에 들어서는 극지방의 빙하와 만년설이 녹아 해수면의 온도가 상승하고, 이로 인하여 계절에 관계없이 이상기온이 발생하는 등 여러 문제점이 발생하게 되는 원인이 되고 있으며, 대기중으로 방출되는 이산화탄소가스의 양을 최소한으로 줄이고자 많은 노력을 기울이고 있는 실정이다.As a result, in recent years, polar ice and ice caps have melted, causing the sea level to rise, resulting in abnormal temperatures regardless of the season. A lot of effort is being made to reduce the amount to a minimum.

이에 본 발명에서는 상기와 같은 문제점들을 해결하기 위하여 발명한 것으로서, 음식물쓰레기 또는 축산분뇨로 구성되는 원료를 발효조에 투입하여 메탄화미생물에 의하여 혐기상태에서 발생하는 바이오가스를 바이오가스저장조에 저장한 후 이산화탄소가스와 메탄가스로 분리하도록 공급하는 가스공급공정과, 공급된 바이오가스는 접촉여재를 충진하여 탈황재를 산포시키는 접촉여재를 통과시켜 바이오가스에 잔존하는 황화합물을 제거하는 탈황공정과, 바이오가스를 활성탄을 통과시켜 활성탄의 기공에 실록산이 흡착되게 하여 바이오가스에 잔존하는 실록산(Siloxane)을 제거하는 실록산제거공정과, 실록산이 제거된 바이오가스를 중압으로 압축하는 압축공정과, 중압으로 압축된 바이오가스에 함유된 습기를 제거하는 습기제거공정과, 습기가 제거된 바이오가스를 폴리스티렌 재질이면서 중공사막 구조를 가지는 멤브레인필터를 통과시켜 메탄가스와 이산화탄소가스로 분리하는 가스분리공정으로 이루어지고, 메탄가스는 재생에너지로 사용할 수 있으며 이산화탄소는 산업용 가스로 재활용하거나 고형화하여 저장하여 지구온난화의 주요 원인물질의 방출을 방지할 수 있는 목적 달성이 가능하다.Therefore, the present invention was invented to solve the problems as described above, after storing the raw material consisting of food waste or livestock manure in the fermentation tank to store the biogas generated in the anaerobic state by methanation microorganisms in the biogas storage tank Gas supply process for supplying carbon dioxide gas and methane gas, and desulfurization process for removing sulfur compounds remaining in biogas by passing contact media that fills contact media and disperses desulfurization materials. Siloxane removal process to remove siloxane remaining in biogas by adsorbing siloxane to pores of activated carbon through activated carbon, compression process for compressing siloxane-removed biogas with medium pressure, and compressed with medium pressure Dehumidification process to remove moisture in biogas, The biogas is separated into methane gas and carbon dioxide gas through a membrane filter with polystyrene and hollow fiber membrane structure.Methane gas can be used as renewable energy and carbon dioxide can be recycled or solidified as industrial gas. It is possible to achieve the purpose of storing to prevent the release of the main cause of global warming.

본 발명은 생활과정에서 음식물을 섭취하고난 후 남게 되는 음식물쓰레기와 축산분뇨를 처리하는 과정에서 발생하는 바이오가스에 함유된 이산화탄소가스와 메탄가스를 분리하여 재활용 가능한 에너지원으로 활용하면서 지구온난화를 예방할 수 있는 등 큰 효과를 가지는 발명이다.The present invention prevents global warming while separating the carbon dioxide gas and methane gas contained in the biogas generated during the processing of food waste and livestock manure remaining after ingesting food in the life process as a renewable energy source. It is an invention having such a great effect.

도 1은 본 발명의 기술이 적용된 저온 바이오가스 분리과정을 도시한 공정 블록도.
도 2는 종래 기술이 적용된 일반적인 바이오가스 처리상태를 도시한 구성블록도.1 is a process block diagram illustrating a low temperature biogas separation process to which the technique of the present invention is applied.
Figure 2 is a block diagram showing a general biogas treatment state applied the prior art.

이하 첨부되는 도면과 관련하여 상기 목적을 달성하기 위한 본 발명의 바람직한 실시 예를 살펴보면 다음과 같다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention for achieving the above object is as follows.

도 1은 본 발명의 기술이 적용된 저온 바이오가스 분리과정을 도시한 공정 블록도로서 함께 설명한다.1 is a block diagram illustrating a low temperature biogas separation process to which the technique of the present invention is applied.

본 발명의 기술이 적용되는 저온 바이오가스 분리방법은, 음식물쓰레기 또는 축산분뇨로 구성되는 원료(101)를 발효조(102)에 투입하여 메탄화미생물에 의하여 혐기상태에서 저압의 바이오가스를 발생시키고, 상기 바이오가스는 바이오가스저장조(103)에 저장한다.In the low temperature biogas separation method to which the technique of the present invention is applied, a raw material 101 composed of food waste or livestock manure is introduced into the fermentation tank 102 to generate low pressure biogas in anaerobic state by methanation microorganisms, The biogas is stored in the biogas storage tank 103.

상기 바이오가스저장조(103)에 저장된 바이오가스를 이산화탄소가스와 메탄가스로 분리하도록 공급하는 가스공급공정(105)과, 공급된 바이오가스에 함유된 황화수소가스, 암모니아가스, 지방산가스를 제거하기 위한 탈황공정(106), 탈황처리된 바이오가스에 잔존하는 실록산(Siloxane)을 제거하기 위한 실록산제거공정(107)과, 실록산이 제거된 바이오가스를 중압으로 압축하는 압축공정(108)과, 압축된 바이오가스에 함유된 습기를 제거하는 습기제거공정(109)과, 습기가 제거된 바이오가스로부터 메탄가스와 이산화탄소가스로 분리하는 가스분리공정(110)으로 이루어진다.Gas supply process 105 for supplying the biogas stored in the biogas storage tank 103 to separate the carbon dioxide gas and methane gas, and desulfurization for removing hydrogen sulfide gas, ammonia gas, fatty acid gas contained in the supplied biogas Step 106, a siloxane removal step 107 for removing siloxanes remaining in the desulfurized biogas, a compression step 108 for compressing the siloxane-removed biogas at medium pressure, and a compressed bio Dehumidification step (109) for removing the moisture contained in the gas, and gas separation step (110) for separating the methane gas and carbon dioxide gas from the moisture is removed biogas.

상기 가스공급고정(105)은, 바이오가스저장조(103)에 저장된 상온(25℃) 대기압 상태(저압)의 바이오가스를 시간당 1.5 ? 2Ｎ㎥를 이송하여 배출가스압력이 0.5bar가 되도록 배출한다.The gas supply fixing 105, the biogas in the normal temperature (25 ℃) atmospheric pressure (low pressure) stored in the biogas storage tank 103 is 1.5? Transfer 2N㎥ to discharge so that the exhaust gas pressure is 0.5bar.

이때, 사용되는 펌프는 원심펌프, 축류펌프, 기어펌프, 베인펌프, 플런저펌프 등 다양한 종류의 것을 사용할 수 있을 것이나 석션(Suction)펌프를 이용하는 것이 바람직할 것이다.At this time, the pump to be used may use a variety of types such as centrifugal pump, axial pump, gear pump, vane pump, plunger pump, but it will be preferable to use a suction (suction) pump.

상기 탈황공정(106)은, 탈황처리하고자 하는 바이오가스를 인계받아 저장할 수 있는 탈황탱크를 구비하고, 상기 탈황탱크의 상방에는 접촉여재를 충진하여 탈황재를 산포시켜 접촉여재를 통과하는 바이오가스에 잔존하는 황화합물을 제거할 수 있도록 한다.The desulfurization step 106 is provided with a desulfurization tank capable of taking over and storing the biogas to be desulfurized, and filling the contact media above the desulfurization tank to distribute desulfurization material to the biogas passing through the contact media. Allows removal of residual sulfur compounds.

상기 탈황재는 탈황탱크와는 별도로 설치되는 탈황재탱크로부터 주기적으로 공급받아 산포할 수 있도록 하고, 탈황으로 잔존하는 폐액은 폐수처리 수행함은 당연할 것이다.The desulfurization material may be periodically distributed from the desulfurization tank installed separately from the desulfurization tank, and the waste liquid remaining in the desulfurization may be treated naturally.

상기 실록산제거공정(107)은, 세제류에 의하여 발생하는 실록산(Siloxane)에 의하여 바이오가스의 분리에 사용되는 장치, 기기, 설비 등에 스케일이 발생할 경우 처리효율성이 저하되는 것을 예방할 수 있도록, 실록산제거탱크의 내부에 활성탄을 충진하여 바이오가스가 활성탄을 통과할 때 활성탄의 기공에 실록산이 흡착되게하여 제거하도록 한다.The siloxane removal tank 107 is a siloxane removal tank so as to prevent the treatment efficiency from being lowered when a scale occurs in a device, apparatus, or equipment used for the separation of biogas by siloxane generated by detergents. The inside of the activated carbon is filled so that the siloxane is adsorbed in the pores of the activated carbon when the biogas passes through the activated carbon to be removed.

상기 실록산을 흡착한 활성탄은 주기적으로 교체하여 실록산의 흡착능이 저하되는 것을 방지할 수 있도록 하는 것은 자명하다 할 것이다.It will be apparent that the activated carbon absorbing the siloxane is periodically replaced to prevent the adsorption capacity of the siloxane from being lowered.

상기 압축공정(108)은, 컴프레서를 이용하여 바이오가스를 중압(7bar 이상)으로 압축하여 습기제거와 분리공정으로 바이오가스를 공급하여 분리작업을 수행할 수 있도록 한다.The compression step 108, by compressing the biogas to a medium pressure (7bar or more) using a compressor to supply the biogas to the moisture removal and separation process to perform the separation operation.

상기 습기제거공정(109)은, 바이오가스에 함유된 습기를 제거하기 위한 것으로서 미스트(Mist) 필터 또는 제습 필터와 같은 통상적인 제습 수단을 이용하여 습기를 제거하도록 한다.The moisture removal process 109 is for removing moisture contained in the biogas to remove moisture by using a conventional dehumidifying means such as a mist filter or a dehumidification filter.

상기 가스분리공정(110)은, 제습되어 공급되는 바이오가스를 폴리스티렌 재질이면서 중공사막 구조를 가지는 멤브레인필터(분리막)를 통과시켜 분리막을 통과하는 메탄가스를 모으는 메탄가스라인과 분리막을 통과하지 않는 이산화탄소가스를 모으는 이산화탄소가스라인으로 분리시킨 후 메탄가스와 이산화탄소가스를 각각의 저장탱크에 저장하도록 한다.The gas separation process 110, the methane gas line to collect the methane gas passing through the membrane by passing the membrane filter (separation membrane) having a polystyrene material and a hollow fiber membrane structure of the biogas supplied by dehumidification and carbon dioxide does not pass through the membrane After the gas is separated into a carbon dioxide gas line, methane gas and carbon dioxide gas are stored in each storage tank.

상기 가스분리공정(110)에서는 멤브레인필터를 하나 이상을 설치하여 바이오가스를 병렬로 공급하여 메탄가스와 이산화탄소가스로 분리한 후 분리된 각각의 가스를 메탄가스라인과 이산화탄소가스라인으로 모아서 분리할 수 있도록 하여도 된다.In the gas separation process 110, at least one membrane filter may be installed to supply biogas in parallel to separate the methane gas and the carbon dioxide gas, and then separate the separated gases into the methane gas line and the carbon dioxide gas line. You may also do so.

메탄가스의 경우에는 세라믹과 제올라이트와 같은 광물질을 소결시켜 구성되는 세라믹멤브레인필터를 한번 더 경유시켜 고도로 정제시켜 열원으로 사용할 수 있도록 함은 당연할 것이다.In the case of methane gas, it is natural that the ceramic membrane filter composed of sintering minerals such as ceramic and zeolite can be used as a heat source by highly refined via a ceramic membrane filter once again.

상기와 같은 본 발명의 기술이 적용된 저온 바이오가스 분리방법으로 바이오가스로부터 메탄가스와 이산화탄소가스를 분리할 경우에는, 메탄가스는 재생에너지로 사용할 수 있으며 이산화탄소는 산업용 가스로 재활용하거나 고형화하여 저장하여 감축시킬 수 있으므로 지구온난화의 주요 원인물질을 대기중으로 방출하지 않아 지구온실가스를 감축할 수 있는 등의 장점을 가진다.When the methane gas and carbon dioxide gas is separated from the biogas by the low temperature biogas separation method to which the technique of the present invention is applied as described above, methane gas can be used as renewable energy and carbon dioxide can be recycled or solidified and stored as industrial gas and reduced. It can reduce global greenhouse gases by not releasing the main causes of global warming into the atmosphere.

105; 가스공급공정
106; 탈황공정
107; 실록산제거공정
108; 압축공정
109; 습기제거공정
110; 가스분리공정105; Gas supply process
106; Desulfurization Process
107; Siloxane Removal Process
108; Compression process
109; Dehumidification Process
110; Gas separation process

Claims (1)

음식물쓰레기 또는 축산분뇨로 구성되는 원료를 발효조에 투입하여 메탄화미생물에 의하여 혐기상태에서 발생하는 바이오가스를 바이오가스저장조에 저장한 후 이산화탄소가스와 메탄가스로 분리하도록 공급하는 가스공급공정과;
공급된 바이오가스는 접촉여재를 충진하여 탈황재를 산포시키는 접촉여재를 통과시켜 바이오가스에 잔존하는 황화합물을 제거하는 탈황공정과;
바이오가스를 활성탄을 통과시켜 활성탄의 기공에 실록산이 흡착되게 하여 바이오가스에 잔존하는 실록산(Siloxane)을 제거하는 실록산제거공정과;
실록산이 제거된 바이오가스를 중압으로 압축하는 압축공정과;
중압으로 압축된 바이오가스에 함유된 습기를 제거하는 습기제거공정과;
습기가 제거된 바이오가스를 폴리스티렌 재질이면서 중공사막 구조를 가지는 멤브레인필터를 통과시켜 메탄가스와 이산화탄소가스로 분리하는 가스분리공정으로 이루어지는 것을 특징으로 하는 저온 바이오가스 분리방법.A gas supply step of supplying a raw material consisting of food waste or livestock manure to a fermenter to store biogas generated in an anaerobic state by methanation microorganisms in a biogas storage tank and to separate the carbon dioxide gas and methane gas;
Desulfurization step of removing the sulfur compounds remaining in the biogas by passing the supplied biogas is filled with the contact medium and the contact medium to distribute the desulfurization material;
A siloxane removal step of removing siloxane (Siloxane) remaining in the biogas by allowing the biogas to pass through the activated carbon so that the siloxane is adsorbed into the pores of the activated carbon;
A compression step of compressing the biogas from which the siloxane is removed at a medium pressure;
A moisture removal process for removing moisture contained in the biogas compressed at medium pressure;
A low temperature biogas separation method comprising a gas separation process of separating moisture into biogas through a membrane filter having a polystyrene and hollow fiber membrane structure, and separating methane gas and carbon dioxide gas.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101529130B1 (en) * 2014-09-18 2015-06-17 한국화학연구원 A multi-stage membrane process and an upgrading apparatus for the production of high purity methane gas using low operation pressure and temperature conditions
KR20160086438A (en) * 2015-01-09 2016-07-20 삼성중공업 주식회사 Fuel gas supplying system in ships
US10047310B2 (en) 2014-09-18 2018-08-14 Korea Research Institute Of Chemical Technology Multistage membrane separation and purification process and apparatus for separating high purity methane gas
US10329504B1 (en) * 2015-11-12 2019-06-25 BioResource Development, LLC Method and system for producing refined biomethane from a renewable natural gas source
EP4349455A1 (en) 2022-10-06 2024-04-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Improved integrated system and method for methane production using off gas recycling to anaerobic digester from a gas separation membrane unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101529130B1 (en) * 2014-09-18 2015-06-17 한국화학연구원 A multi-stage membrane process and an upgrading apparatus for the production of high purity methane gas using low operation pressure and temperature conditions
US10047310B2 (en) 2014-09-18 2018-08-14 Korea Research Institute Of Chemical Technology Multistage membrane separation and purification process and apparatus for separating high purity methane gas
KR20160086438A (en) * 2015-01-09 2016-07-20 삼성중공업 주식회사 Fuel gas supplying system in ships
US10329504B1 (en) * 2015-11-12 2019-06-25 BioResource Development, LLC Method and system for producing refined biomethane from a renewable natural gas source
EP4349455A1 (en) 2022-10-06 2024-04-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Improved integrated system and method for methane production using off gas recycling to anaerobic digester from a gas separation membrane unit

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