WO2023033423A1 - Biogas processing device using iron hydroxide powder - Google Patents

Biogas processing device using iron hydroxide powder Download PDF

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Publication number
WO2023033423A1
WO2023033423A1 PCT/KR2022/012446 KR2022012446W WO2023033423A1 WO 2023033423 A1 WO2023033423 A1 WO 2023033423A1 KR 2022012446 W KR2022012446 W KR 2022012446W WO 2023033423 A1 WO2023033423 A1 WO 2023033423A1
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Prior art keywords
biogas
hydroxide powder
iron hydroxide
line
bag
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PCT/KR2022/012446
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French (fr)
Korean (ko)
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김신동
김가휘
신재철
김대진
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주식회사 이앤켐솔루션
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Publication of WO2023033423A1 publication Critical patent/WO2023033423A1/en

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    • 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
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • 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
    • 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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • 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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
    • 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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04—Cleaning filters
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
    • 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
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • 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
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
    • 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
    • B01D53/52—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/05—Biogas
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the present invention relates to a biogas treatment device using iron hydroxide powder, which can simply remove hydrogen sulfide by supplying high-concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
  • amorphous iron hydroxide has a very high reactivity with hydrogen sulfide
  • hydrogen sulfide in the biogas is removed while passing the biogas by filling it in the form of pellets in a desulfurization tower.
  • various wet processes are used to remove tens of thousands to tens of thousands of ppm of hydrogen sulfide, especially contained in landfill gas.
  • the biodesulfurization process using microorganisms is a representative wet process.
  • Treatment of biogas containing tens of thousands to tens of thousands of ppm of hydrogen sulfide only in a dry process has limitations depending on the size of the desulfurization tower and the amount of desulfurization agent used.
  • Patent Document 1 Korea Patent Registration No. 10-2270488 (2021.06.23)
  • the problem to be solved by the present invention is to provide a biogas treatment device using iron hydroxide powder that can easily remove hydrogen sulfide by supplying high concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
  • biogas containing hydrogen sulfide is introduced to the lower part, the processed gas passing through the filter bag 16 is discharged to the upper part, and the filter bag 16 is formed in the central part.
  • a biogas supply line 30 for supplying biogas to the bag filter 10;
  • An iron hydroxide powder input line 50 connected to the biogas supply line 30 and inputting iron hydroxide powder;
  • a process gas discharge line 60 for discharging the process gas of the bag filter 10;
  • a suction fan 70 located in the process gas discharge line 60 and sucking the process gas of the bag filter 10;
  • a differential pressure sensor 80 for measuring the pressure of the processing gas of the bag filter 10;
  • a process gas feedback line 90 having one end connected to the process gas discharge line 60 and the other end extending above the filter bag 16 and resupplying the process gas from the process gas discharge line 60;
  • a processing gas nozzle 100 extending from the processing gas feedback line 90 into the filter bag 16 and injecting processing gas into the filter bag 16;
  • a compressor 110 located in the processing gas feedback line 90 and sucking processing gas from the processing gas discharge line 60 and supplying the processing gas to the processing gas feedback line 90;
  • the iron hydroxide powder is characterized in that 100 ⁇ 200mesh.
  • the iron hydroxide powder input line 50 is formed to have a smaller diameter than the biogas supply line 30 to supply iron hydroxide powder at a negative pressure generated by the supply flow rate of the biogas supplied from the biogas supply line 30. characterized by
  • the processed gas feedback line 90 includes a first feedback line 91 and a first feedback line 91 having one end connected to the processed gas discharge line 60 and the other end extending into the bag filter 10.
  • the compressor 110 is characterized in that it is operated to supply process gas in a pulsed manner.
  • one end is connected to the collection unit 13 formed at the lower end of the bag filter 10, and the other end is connected to the biogas supply line 30, and the iron sulfide powder and unreacted iron hydroxide powder collected in the collection unit 13
  • It further includes a re-injection line 120 for re-injecting into the biogas supply line 30, and the control unit 140 returns the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 to the re-injection line 120. characterized in that it is controlled so that it is supplied.
  • the biogas containing hydrogen sulfide is stored and the biogas storage device 20 for supplying the biogas to the biogas supply line 30;
  • An iron hydroxide powder storage device 40 for storing iron hydroxide powder and supplying the iron hydroxide powder to the iron hydroxide powder input line 50;
  • a dry desulfurization tower 130 in which a desulfurization agent is located and a processing gas outlet 12 is formed on one side of the upper portion to remove residual hydrogen sulfide contained in the processing gas supplied to the processing gas discharge line 60; to be characterized
  • the problem to be solved by the present invention has the advantage of being able to simply remove hydrogen sulfide by supplying a high concentration of hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
  • the mixing amount of the iron hydroxide powder can be adjusted by the flow rate of the biogas, there is an advantage in that the iron hydroxide powder can be mixed with the biogas at an optimal ratio.
  • the processing gas of the processing gas discharge line is used to drop iron sulfide powder and unreacted iron hydroxide powder blocking the hole of the filter bag, there is an advantage of not changing the concentration of biogas.
  • FIG. 1 is a schematic diagram of a biogas processing apparatus using iron hydroxide powder according to the present invention.
  • FIG. 2 is a perspective view of a bag filter and a process gas feedback line according to the present invention
  • FIG 3 is an exploded view of a bag filter and a process gas feedback line according to the present invention.
  • bag filter 20 biogas storage device
  • biogas supply line 40 iron hydroxide powder storage device
  • processing gas nozzle 110 compressor
  • Biogas processing device using iron hydroxide powder includes a bag filter 10, a biogas storage device 20, a biogas supply line 30, an iron hydroxide powder storage device 40, and an iron hydroxide powder input line 50.
  • process gas discharge line 60, suction fan 70, differential pressure sensor 80, process gas feedback line 90, process gas nozzle 100, compressor 110, re-input line 120, dry desulfurization Tower 130 is included.
  • the bag filter 10 has a mixture supply port 11 through which a mixture of biogas containing hydrogen sulfide and iron hydroxide powder flows from the outside on one side of the lower part, and hydrogen sulfide is removed while passing through the filter bag 16 on one side of the upper part.
  • a processing gas outlet 12 through which processing gas is discharged is formed, and a collecting unit 13 is formed at the lower end to discharge iron sulfide powder or unreacted iron hydroxide powder to the outside while being narrowed in a tapered shape.
  • the bag filter 10 separates the mixture supply port 11 and the processing gas outlet 12 therein, and a separator plate 14 having a plurality of through holes 15 is formed, and the upper end is separated in a cylindrical shape.
  • a filter bag 16 is formed in the through hole 15 of the plate 14 and extends to the bottom of the separator plate 14 and has a hole formed on the surface to block the inflow of iron hydroxide powder.
  • the bag filter 10 blocks the iron hydroxide powder supplied therein from passing through the filter bag 16 and moving upward, the iron hydroxide powder reacts with the hydrogen sulfide of the biogas to generate iron sulfide powder.
  • the unreacted iron hydroxide powder and iron sulfide powder adhere to the outer wall so that they do not pass through the hole of the filter bag 16, and the biogas from which hydrogen sulfide is removed passes through the hole of the bag filter and is discharged as processing gas.
  • the biogas storage device 20 receives and stores biogas containing hydrogen sulfide.
  • the biogas supply line 30 has one end connected to the biogas storage device 20 and the other end connected to the mixture supply port 11 of the bag filter 10 to supply the biogas of the biogas storage device 20 to the bag filter. (10) is supplied.
  • the iron hydroxide powder storage device 40 receives and stores iron hydroxide powder. At this time, it is preferable that the iron hydroxide powder has 100 to 200 mesh.
  • the iron hydroxide powder input line 50 has one end connected to the iron hydroxide powder storage device 40 and the other end connected to the biogas supply line 30 so that the iron hydroxide powder of the iron hydroxide powder storage device 40 is connected to the biogas supply line 30. supply with At this time, the iron hydroxide powder input line 50 is formed to have a smaller diameter than the biogas supply line 30, and the iron hydroxide powder is supplied evenly with a negative pressure generated by the supply flow rate of the biogas supplied from the biogas supply line 30. It is preferable to supply them together while mixing. For example, iron hydroxide powder is preferably mixed so that the hydrogen sulfide removal rate is about 80 to 90 based on the hydrogen sulfide removal rate.
  • the processing gas discharge line 60 has one end connected to the processing gas outlet 12 of the bag filter 10 and the other end extending to the outside to discharge the biogas from which hydrogen sulfide has been removed as processing gas.
  • the suction fan 70 is located in the process gas discharge line 60 and sucks the process gas of the bag filter 10 .
  • the suction fan 70 By the suction fan 70, the gas flow inside the bag filter 10 flows through the biogas supply line 30, the inner lower end of the bag filter 10, the inner upper end of the bag filter 10, and the processing gas discharge line ( 60) is directed.
  • the differential pressure sensor 80 is positioned above the separator plate 14 of the bag filter 10 and measures the pressure of the processed gas passing through the filter bag 16. It is preferable to measure the pressure of the process gas that has passed through the filter bag 16 located at the top of the filter bag 16 . By checking the pressure measured by the differential pressure sensor 80, it can be confirmed that the hole of the filter bag 16 is excessively clogged with iron sulfide powder or unreacted iron hydroxide powder.
  • the processing gas feedback line 90 has one end connected to the processing gas discharge line 60 and the other end extending to the upper part of the separation plate 14, and the processing gas of the processing gas discharge line 60 is passed to the separation plate 14. Re-supply to the top.
  • the process gas discharge line 60 is a plurality of first feedback lines 91 and first feedback lines 91 having one end connected to the process gas discharge line 60 and the other end extending into the inside of the bag filter 10. It is composed of a second feedback line 92 branched and extending to the top of the filter bag 16. At this time, it is preferable that a three-way valve is formed in the processing gas discharge line 60 to control the flow direction of the processing gas. Since the processing gas discharged from the bag filter 10 is used by the processing gas feedback line 90, it is possible to prevent the concentration of methane included in the processing gas from changing.
  • the processing gas nozzle 100 extends from the processing gas feedback line 90 into the filter bag 16 and injects the processing gas into the filter bag 16 .
  • the processing gas nozzle 100 is connected to the second feedback line 92 when the processing gas feedback line 90 consists of the first feedback line 91 and the second feedback line 92, so that the filter bag 16 ) extends into the interior of the
  • the processing gas injected from the processing gas nozzle 100 gives an impact to the iron sulfide and iron hydroxide powder attached to the outer surface of the filter bag 16 to cause them to fall.
  • the compressor 110 is located in the process gas feedback line 90 and sucks the process gas from the process gas discharge line 60 and supplies it to the process gas feedback line 90 . At this time, the compressor 110 is preferably operated to supply the process gas in a pulsed manner.
  • the re-introduction line 120 has one end connected to the collection unit 13 formed at the lower end of the bag filter 10 and the other end connected to the biogas supply line 30, and the iron sulfide powder collected in the collection unit 13 and The unreacted iron hydroxide powder is reintroduced into the biogas supply line (30).
  • a control valve for controlling the supply amount of the iron sulfide powder and the unreacted iron hydroxide powder is formed in the re-injection line 120. With this re-injection line 120, unreacted iron hydroxide powder can be reused in contact with hydrogen sulfide.
  • a process gas discharge line 60 is connected to one side of the lower part, a desulfurization agent is located therein, and a process gas discharge port is formed at one side of the upper part.
  • the dry desulfurization tower 130 removes residual hydrogen sulfide contained in the processing gas supplied to the processing gas discharge line 60 .
  • the replacement cycle of the desulfurization agent is reduced compared to directly processing biogas containing high concentration of hydrogen sulfide at first, thereby reducing operating costs and stably discharging hydrogen sulfide in a state of being removed.
  • the control unit 140 operates the suction fan 70 and stops the operation of the compressor 110 when the pressure measured by the differential pressure sensor 80 is higher than the standard, and the pressure measured by the differential pressure sensor 80 is lower than the standard. The operation of the back suction fan 70 is stopped and the compressor 110 is operated. In addition, the control unit 140 controls the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 to be supplied to the re-input line 120 .
  • the control unit 140 When the control unit 140 operates the suction fan 70 located in the processing gas discharge line 60 of the bag filter 10, the biogas stored in the biogas storage device 20 passes through the biogas supply line 30. It is supplied to the lower part of the bag filter (10).
  • the iron hydroxide powder is supplied to the iron hydroxide powder input line 50 connected to the biogas supply line 30 and mixed.
  • the iron hydroxide powder supplied to the inside of the bag filter 10 reacts with the hydrogen sulfide of the biogas to form iron sulfide powder while moving upward, but is blocked by the filter bag 16 and adheres to the surface of the filter bag 16.
  • the biogas from which hydrogen sulfide has been removed is discharged through the process gas discharge line 60 while passing through the bag filter.
  • the hydrogen sulfide and the unreacted iron hydroxide powder are removed by continuously reacting with hydrogen sulfide in a state in close contact with the outer wall so that they do not pass through the hole of the bag filter by the suction force of the suction fan 70.
  • the control unit 140 stops the operation of the suction fan 70 and turns on the compressor 110 when the pressure of the processing gas measured by the differential pressure sensor 80 is below the standard. Accordingly, the processing gas of the processing gas discharge line 60 is injected from the inside of the filter bag 16 through the processing gas nozzle 100 inside the filter bag 16 device via the processing gas feedback line 90 As the iron sulfide and unreacted iron hydroxide powder blocking the hole of (16) are separated, they fall to the lower end of the bag filter (10) and are separated. At this time, it is preferable that the compressor 110 is operated in a pulse form repeating injection and interruption of the processing gas.
  • processing gas discharged through the processing gas discharge line 60 is supplied to the dry desulfurization tower 130 to be discharged after the remaining hydrogen sulfide contained in the processing gas is removed.
  • the biogas treatment device using iron hydroxide powder it is possible to simply remove hydrogen sulfide by supplying high-concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter, beyond the limits of the existing technology. According to the above, not only the use of related technology, but also the possibility of marketing or business of the applied device is sufficient, and it is an invention with industrial applicability because it can be clearly implemented in reality.

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  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

The present invention comprises: a bag filter (10) having the lower part through which biogas containing hydrogen sulfide is introduced, the upper part through which processed gas having passed through a filter bag (16) is discharged, and the central part equipped with the filter bag (16); a biogas supply line (30) for supplying biogas to the bag filter (10); an iron hydroxide powder feeding line (50) connected to the biogas supply line (30) to feed iron hydroxide powder; a processed gas discharge line (60) for discharging processed gas from the bag filter (10); a suction fan (70) located in the processed gas discharge line (60) and suctioning processed gas from the bag filter (10); a differential pressure sensor (80) for measuring the pressure of processed gas in the bag filter (10); a processed gas feedback line (90) having one end connected to the processed gas discharge line (60) and the other end extending to the upper part of the filter bag (16) so as to resupply processed gas from the process gas discharge line (60); a processed gas nozzle (100) extending from the processed gas feedback line (90) into the filter bag (16) and injecting processed gas into the filter bag (16); a compressor (110) located in the processing gas feedback line (90) and suctioning processed gas from the processed gas discharge line (60) to supply the processed gas to the processed gas feedback line (90); and a control unit (140) configured to operate the suction fan (70) and stop the compressor (110) when the pressure measured by the differential pressure sensor (80) is greater than or equal to a standard, and to stop the suction fan (70) and operate the compressor (110) when the pressure measured by the differential pressure sensor (80) is equal to or lower than the standard.

Description

수산화철분말을 이용한 바이오가스 처리장치Biogas processing device using iron hydroxide powder
본 발명은 바이오가스에 포함된 고농도의 황화수소를 수산화철분말과 함께 백필터에 공급하여 황화수소를 간단하게 제거할 수 있는 수산화철분말을 이용한 바이오가스 처리장치에 관한 것이다.The present invention relates to a biogas treatment device using iron hydroxide powder, which can simply remove hydrogen sulfide by supplying high-concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
바이오가스를 사용하여 수소를 생산하거나 합성가스를 생산하기 위해서는 필수적으로 황화수소의 농도를 ppb 수준으로 유지해야만 후단의 개질 촉매를 보호할 수 있다. In order to produce hydrogen or syngas using biogas, the concentration of hydrogen sulfide must be maintained at the ppb level to protect the reforming catalyst at the rear.
무정형 수산화철은 황화수소와 반응성이 매우 뛰어나기 때문에 통상적으로 탈황탑에 펠릿형태로 충진하여 바이오가스를 통과시키면서 바이오가스 내 황화수소를 제거한다. 최근에 바이오가스의 활용이 증가하고 있고, 특히 매립가스(Landfill gas)에 포함된 수 천 ~ 수 만 ppm의 황화수소를 제거하기 위하여 다양한 습식 공정들이 사용되고 있다. 미생물을 이용한 생물탈황공정이 대표적인 습식공정이다. 수 천 ~ 수 만 ppm의 황화수소가 포함된 바이오가스를 건식 공정만으로 처리하는 것은 탈황탑의 크기 및 탈황제 사용양에 따른 한계가 있다. Since amorphous iron hydroxide has a very high reactivity with hydrogen sulfide, hydrogen sulfide in the biogas is removed while passing the biogas by filling it in the form of pellets in a desulfurization tower. Recently, the utilization of biogas is increasing, and various wet processes are used to remove tens of thousands to tens of thousands of ppm of hydrogen sulfide, especially contained in landfill gas. The biodesulfurization process using microorganisms is a representative wet process. Treatment of biogas containing tens of thousands to tens of thousands of ppm of hydrogen sulfide only in a dry process has limitations depending on the size of the desulfurization tower and the amount of desulfurization agent used.
(특허문헌 1) 한국등록특허 제10-2270488호(2021.06.23)(Patent Document 1) Korea Patent Registration No. 10-2270488 (2021.06.23)
본 발명이 해결하고자 하는 과제는 바이오가스에 포함된 고농도의 황화수소를 수산화철분말과 함께 백필터에 공급하여 황화수소를 간단하게 제거할 수 있는 수산화철분말을 이용한 바이오가스 처리장치를 제공하는 데 있다.The problem to be solved by the present invention is to provide a biogas treatment device using iron hydroxide powder that can easily remove hydrogen sulfide by supplying high concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
본 발명에 따른 수산화철분말을 이용한 바이오가스 처리장치는, 하부로 황화수소가 포함된 바이오가스가 유입되고, 상부로 필터백(16)을 통과한 처리가스가 배출되며 중앙부분에 필터백(16)이 형성된 백필터(10)와; 바이오가스를 백필터(10)로 공급하는 바이오가스 공급라인(30)과; 바이오가스 공급라인(30)에 연결되어 수산화철분말을 투입하는 수산화철분말 투입라인(50)과; 백필터(10)의 처리가스로 배출하는 처리가스 배출라인(60)과; 처리가스 배출라인(60)에 위치하면서 백필터(10)의 처리가스를 흡입하는 흡입팬(70)과; 백필터(10)의 처리가스의 압력을 측정하는 차압센서(80)과; 일단이 처리가스 배출라인(60)에 연결되고 타단이 필터백(16)의 상부로 연장되어 있으며 처리가스 배출라인(60)의 처리가스를 재공급하는 처리가스 피드백라인(90)과; 처리가스 피드백라인(90)에서 필터백(16)의 내부로 연장되어 있으며 처리가스를 필터백(16)의 내부로 분사하는 처리가스 분사구(100)와; 처리가스 피드백라인(90)에 위치하면서 처리가스 배출라인(60)의 처리가스를 흡입하여 처리가스 피드백라인(90)으로 공급하는 압축기(110)와; 차압센서(80)에서 측정된 압력이 기준 이상이면 흡입팬(70)의 작동을 작동시키고 압축기(110)를 작동을 중지시키고, 차압센서(80)에서 측정된 압력이 기준 이하이면 흡입팬(70)의 작동을 중지시키고 압축기(110)를 작동시키는 제어부(140)를 포함하는 것을 특징으로 한다.In the biogas treatment device using iron hydroxide powder according to the present invention, biogas containing hydrogen sulfide is introduced to the lower part, the processed gas passing through the filter bag 16 is discharged to the upper part, and the filter bag 16 is formed in the central part. formed bag filter 10; A biogas supply line 30 for supplying biogas to the bag filter 10; An iron hydroxide powder input line 50 connected to the biogas supply line 30 and inputting iron hydroxide powder; a process gas discharge line 60 for discharging the process gas of the bag filter 10; a suction fan 70 located in the process gas discharge line 60 and sucking the process gas of the bag filter 10; a differential pressure sensor 80 for measuring the pressure of the processing gas of the bag filter 10; a process gas feedback line 90 having one end connected to the process gas discharge line 60 and the other end extending above the filter bag 16 and resupplying the process gas from the process gas discharge line 60; a processing gas nozzle 100 extending from the processing gas feedback line 90 into the filter bag 16 and injecting processing gas into the filter bag 16; a compressor 110 located in the processing gas feedback line 90 and sucking processing gas from the processing gas discharge line 60 and supplying the processing gas to the processing gas feedback line 90; When the pressure measured by the differential pressure sensor 80 is higher than the standard, the suction fan 70 is operated and the compressor 110 is stopped, and when the pressure measured by the differential pressure sensor 80 is lower than the standard, the suction fan 70 ) It is characterized in that it includes a control unit 140 for stopping the operation and operating the compressor 110.
바람직하게, 수산화철분말은 100~200mesh 인 것을 특징으로 한다.Preferably, the iron hydroxide powder is characterized in that 100 ~ 200mesh.
바람직하게, 수산화철분말 투입라인(50)은 바이오가스 공급라인(30)보다 직경이 작게 형성되어 바이오가스 공급라인(30)에서 공급되는 바이오가스의 공급유량에 의해 발생되는 음압으로 수산화철분말을 공급하는 것을 특징으로 한다.Preferably, the iron hydroxide powder input line 50 is formed to have a smaller diameter than the biogas supply line 30 to supply iron hydroxide powder at a negative pressure generated by the supply flow rate of the biogas supplied from the biogas supply line 30. characterized by
바람직하게, 처리가스 피드백라인(90)은 일단이 처리가스 배출라인(60)에 연결되고 타단이 백필터(10)의 내부로 연장된 제1 피드백라인(91)과 제1 피드백라인(91)에서 다수개로 분기되어 필터백(16)의 상부로 연장된 제2 피드백라인(92)으로 이루어지고, 처리가스 분사구(100)는 제2 피드백라인(92)에 연결되어 필터백(16)의 내부로 연장된 것을 특징으로 한다.Preferably, the processed gas feedback line 90 includes a first feedback line 91 and a first feedback line 91 having one end connected to the processed gas discharge line 60 and the other end extending into the bag filter 10. consists of a plurality of second feedback lines 92 branched from and extended to the upper part of the filter bag 16, and the processing gas nozzle 100 is connected to the second feedback line 92 to the inside of the filter bag 16 Characterized in that it is extended to .
바람직하게, 압축기(110)는 처리가스를 펄스방식으로 공급하도록 작동되는 것을 특징으로 한다.Preferably, the compressor 110 is characterized in that it is operated to supply process gas in a pulsed manner.
바람직하게, 일단이 백필터(10)의 하단에 형성된 포집부(13)에 연결되고, 타단이 바이오가스 공급라인(30)에 연결되어 포집부(13)에 포집된 황화철 분말과 미반응 수산화철분말을 바이오가스 공급라인(30)으로 재투입하는 재투입라인(120)을 더 포함하고, 제어부(140)는 포집부(13)에 포집된 황화철과 미반응 수산화철분말이 재투입라인(120)으로 공급되도록 제어하는 것을 특징으로 한다.Preferably, one end is connected to the collection unit 13 formed at the lower end of the bag filter 10, and the other end is connected to the biogas supply line 30, and the iron sulfide powder and unreacted iron hydroxide powder collected in the collection unit 13 It further includes a re-injection line 120 for re-injecting into the biogas supply line 30, and the control unit 140 returns the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 to the re-injection line 120. characterized in that it is controlled so that it is supplied.
바람직하게, 황화수소가 포함된 바이오가스가 저장되며 바이오가스 공급라인(30)으로 바이오가스를 공급하는 바이오가스 저장장치(20)와; 수산화철분말이 저장되며 수산화철분말 투입라인(50)으로 수산화철분말을 공급하는 수산화철분말 저장장치(40)와; 내부에 탈황제가 위치하고 있으며 상부 일측으로 처리가스 배출구(12)가 형성되어 처리가스 배출라인(60)으로 공급되는 처리가스에 포함된 잔여 황화수소를 제거하는 건식탈황탑(130);를 더 포함하는 것을 특징으로 한다.Preferably, the biogas containing hydrogen sulfide is stored and the biogas storage device 20 for supplying the biogas to the biogas supply line 30; An iron hydroxide powder storage device 40 for storing iron hydroxide powder and supplying the iron hydroxide powder to the iron hydroxide powder input line 50; A dry desulfurization tower 130 in which a desulfurization agent is located and a processing gas outlet 12 is formed on one side of the upper portion to remove residual hydrogen sulfide contained in the processing gas supplied to the processing gas discharge line 60; to be characterized
본 발명이 해결하고자 하는 과제는 바이오가스에 포함된 고농도의 황화수소를 수산화철분말과 함께 백필터에 공급하여 황화수소를 간단하게 제거할 수 있는 장점이 있다.The problem to be solved by the present invention has the advantage of being able to simply remove hydrogen sulfide by supplying a high concentration of hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter.
또한, 바이오가스의 유량으로 수산화철분말의 혼합량을 조절할 수 있기 때문에 수산화철분말을 최적의 비율로 바이오가스에 혼합시킬 수 있는 장점이 있다.In addition, since the mixing amount of the iron hydroxide powder can be adjusted by the flow rate of the biogas, there is an advantage in that the iron hydroxide powder can be mixed with the biogas at an optimal ratio.
또한 백필터의 후단에 탈황탑이 설치되어 있기 때문에 백필터의 오작동이나 수리가 필요한 경우에도 연속적으로 황화수소의 제거가 가능한 장점을 갖는다.In addition, since the desulfurization tower is installed at the rear end of the bag filter, hydrogen sulfide can be continuously removed even when the bag filter malfunctions or requires repair.
또한, 필터백의 구멍을 막고 있는 황화철 분말과 미반응 수산화철분말을 낙하시키기 위하여 처리가스 배출라인의 처리가스를 사용하기 때문에 바이오가스의 농도에 변화를 주지 않는 장점이 있다.In addition, since the processing gas of the processing gas discharge line is used to drop iron sulfide powder and unreacted iron hydroxide powder blocking the hole of the filter bag, there is an advantage of not changing the concentration of biogas.
또한, 미반응된 수산화철분말을 다시 재사용할 수 있기 때문에 수산화철분말의 효율을 향상시킬 수 있는 장점이 있다.In addition, since the unreacted iron hydroxide powder can be reused, there is an advantage of improving the efficiency of the iron hydroxide powder.
도 1은 본 발명에 따른 수산화철분말을 이용한 바이오가스 처리장치의 개략도.1 is a schematic diagram of a biogas processing apparatus using iron hydroxide powder according to the present invention.
도 2는 본 발명에 따른 백필터와 처리가스 피드백라인의 사시도.2 is a perspective view of a bag filter and a process gas feedback line according to the present invention;
도 3은 본 발명에 따른 백필터와 처리가스 피드백라인의 분해도.3 is an exploded view of a bag filter and a process gas feedback line according to the present invention.
10 : 백필터 20 : 바이오가스 저장장치10: bag filter 20: biogas storage device
30 : 바이오가스 공급라인 40 : 수산화철분말 저장장치30: biogas supply line 40: iron hydroxide powder storage device
50 : 수산화철분말 투입라인 60 : 처리가스 배출라인50: iron hydroxide powder input line 60: processing gas discharge line
70 : 흡입팬 80 : 차압센서70: suction fan 80: differential pressure sensor
90 : 처리가스 피드백라인 90 : 피드백라인90: processing gas feedback line 90: feedback line
100 : 처리가스 분사구 110 : 압축기100: processing gas nozzle 110: compressor
120 : 재투입라인 130 : 건식탈황탑120: re-input line 130: dry desulfurization tower
이하, 첨부된 도면을 참조하여 본 발명의 실시예를 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
본 발명에 따른 수산화철분말을 이용한 바이오가스 처리장치는 백필터(10), 바이오가스 저장장치(20), 바이오가스 공급라인(30), 수산화철분말 저장장치(40), 수산화철분말 투입라인(50), 처리가스 배출라인(60), 흡입팬(70), 차압센서(80), 처리가스 피드백라인(90), 처리가스 분사구(100), 압축기(110), 재투입라인(120), 건식탈황탑(130)을 포함한다.Biogas processing device using iron hydroxide powder according to the present invention includes a bag filter 10, a biogas storage device 20, a biogas supply line 30, an iron hydroxide powder storage device 40, and an iron hydroxide powder input line 50. , process gas discharge line 60, suction fan 70, differential pressure sensor 80, process gas feedback line 90, process gas nozzle 100, compressor 110, re-input line 120, dry desulfurization Tower 130 is included.
백필터(10)는 하부 일측에 외부로부터 황화수소가 포함된 바이오가스와 수산화철분말의 혼합물이 유입되는 혼합물 공급구(11)가 형성되고, 상부 일측에 필터백(16)을 통과하면서 황화수소가 제거된 처리가스가 배출되는 처리가스 배출구(12)가 형성되며, 하단에 테이퍼 형상으로 좁아지면서 황화철 분말 또는 미반응 수산화철분말을 외부로 배출하는 포집부(13)가 형성된다. 그리고, 백필터(10)는 내부의 혼합물 공급구(11)와 처리가스 배출구(12)를 분리시키며 다수개의 관통홈(15)이 형성된 분리판(14)이 형성되고, 원통형상으로 상단이 분리판(14)의 관통홈(15)에 위치하면서 분리판(14)의 하부로 연장되게 위치하며 표면에 수산화철분말의 유입을 차단할 수 있는 구멍이 형성된 필터백(16)이 형성된다.The bag filter 10 has a mixture supply port 11 through which a mixture of biogas containing hydrogen sulfide and iron hydroxide powder flows from the outside on one side of the lower part, and hydrogen sulfide is removed while passing through the filter bag 16 on one side of the upper part. A processing gas outlet 12 through which processing gas is discharged is formed, and a collecting unit 13 is formed at the lower end to discharge iron sulfide powder or unreacted iron hydroxide powder to the outside while being narrowed in a tapered shape. In addition, the bag filter 10 separates the mixture supply port 11 and the processing gas outlet 12 therein, and a separator plate 14 having a plurality of through holes 15 is formed, and the upper end is separated in a cylindrical shape. A filter bag 16 is formed in the through hole 15 of the plate 14 and extends to the bottom of the separator plate 14 and has a hole formed on the surface to block the inflow of iron hydroxide powder.
이러한 백필터(10)는 내부로 공급된 수산화철분말이 필터백(16)에 통과하여 상부로 이동하는 것을 차단하기 때문에 수산화철분말이 바이오가스의 황화수소와 반응하여 황화철 분말을 생성하게 된다. 미반응 수산화철분말과 황화철 분말은 필터백(16)의 구멍을 통과하지 못하게 외벽에 밀착되고 황화수소가 제거된 바이오가스는 백필터의 구멍을 통과하여 처리가스로 배출되게 된다.Since the bag filter 10 blocks the iron hydroxide powder supplied therein from passing through the filter bag 16 and moving upward, the iron hydroxide powder reacts with the hydrogen sulfide of the biogas to generate iron sulfide powder. The unreacted iron hydroxide powder and iron sulfide powder adhere to the outer wall so that they do not pass through the hole of the filter bag 16, and the biogas from which hydrogen sulfide is removed passes through the hole of the bag filter and is discharged as processing gas.
바이오가스 저장장치(20)는 황화수소가 포함된 바이오가스를 제공받아 저장한다. The biogas storage device 20 receives and stores biogas containing hydrogen sulfide.
바이오가스 공급라인(30)은 일단이 바이오가스 저장장치(20)에 연결되고 타단이 백필터(10)의 혼합물 공급구(11)에 연결되어 바이오가스 저장장치(20)의 바이오가스를 백필터(10)로 공급한다.The biogas supply line 30 has one end connected to the biogas storage device 20 and the other end connected to the mixture supply port 11 of the bag filter 10 to supply the biogas of the biogas storage device 20 to the bag filter. (10) is supplied.
수산화철분말 저장장치(40)는 수산화철분말을 제공받아 저장한다. 이때, 수산화철분말은 100~200mesh를 갖는 것이 바람직하다.The iron hydroxide powder storage device 40 receives and stores iron hydroxide powder. At this time, it is preferable that the iron hydroxide powder has 100 to 200 mesh.
수산화철분말 투입라인(50)은 일단이 수산화철분말 저장장치(40)에 연결되고 타단이 바이오가스 공급라인(30)에 연결되어 수산화철분말 저장장치(40)의 수산화철분말을 바이오가스 공급라인(30)으로 공급한다. 이때, 수산화철분말 투입라인(50)은 바이오가스 공급라인(30)보다 직경이 작게 형성되어 바이오가스 공급라인(30)에서 공급되는 바이오가스의 공급유량에 의해 발생되는 음압으로 수산화철분말을 공급하여 고르게 혼합시키면서 함께 공급되도록 하는 것이 바람직하다. 예를 들면 수산화철분말는 황화수소 제거율을 바탕으로 황화수소의 제거율이 80~90정도가 되도록 혼합되는 것이 바람직하다.The iron hydroxide powder input line 50 has one end connected to the iron hydroxide powder storage device 40 and the other end connected to the biogas supply line 30 so that the iron hydroxide powder of the iron hydroxide powder storage device 40 is connected to the biogas supply line 30. supply with At this time, the iron hydroxide powder input line 50 is formed to have a smaller diameter than the biogas supply line 30, and the iron hydroxide powder is supplied evenly with a negative pressure generated by the supply flow rate of the biogas supplied from the biogas supply line 30. It is preferable to supply them together while mixing. For example, iron hydroxide powder is preferably mixed so that the hydrogen sulfide removal rate is about 80 to 90 based on the hydrogen sulfide removal rate.
처리가스 배출라인(60)은 일단이 백필터(10)의 처리가스 배출구(12)에 연결되고, 타단이 외부로 연장되어 황화수소가 제거된 바이오가스를 처리가스로 배출한다.The processing gas discharge line 60 has one end connected to the processing gas outlet 12 of the bag filter 10 and the other end extending to the outside to discharge the biogas from which hydrogen sulfide has been removed as processing gas.
흡입팬(70)은 처리가스 배출라인(60)에 위치하면서 백필터(10)의 처리가스를 흡입한다. 이러한 흡입팬(70)에 의해서 백필터(10)의 내부의 가스흐름이 바이오가스 공급라인(30), 백필터(10)의 내부 하단, 백필터(10)의 내부 상단, 처리가스 배출라인(60)을 향하게 된다.The suction fan 70 is located in the process gas discharge line 60 and sucks the process gas of the bag filter 10 . By the suction fan 70, the gas flow inside the bag filter 10 flows through the biogas supply line 30, the inner lower end of the bag filter 10, the inner upper end of the bag filter 10, and the processing gas discharge line ( 60) is directed.
차압센서(80)는 백필터(10)의 분리판(14)의 상부에 위치하면서 필터백(16)을 통과한 처리가스의 압력을 측정한다, 이때 차압센서(80)는 필터백(16)의 상부에 위치하여 필터백(16)을 통과한 처리가스의 압력을 측정하는 것이 바람직하다. 이러한 차압센서(80)에서 측정된 압력을 확인하여 황화철 분말 또는 미반응 수산화철분말에 의해 필터백(16)의 구멍이 과도하게 막힌 것을 확인할 수 있게 된다.The differential pressure sensor 80 is positioned above the separator plate 14 of the bag filter 10 and measures the pressure of the processed gas passing through the filter bag 16. It is preferable to measure the pressure of the process gas that has passed through the filter bag 16 located at the top of the filter bag 16 . By checking the pressure measured by the differential pressure sensor 80, it can be confirmed that the hole of the filter bag 16 is excessively clogged with iron sulfide powder or unreacted iron hydroxide powder.
처리가스 피드백라인(90)은 일단이 처리가스 배출라인(60)에 연결되고 타단이 분리판(14)의 상부로 연장되어 있으며 처리가스 배출라인(60)의 처리가스를 분리판(14)의 상부로 재공급한다. 처리가스 배출라인(60)은 일단이 처리가스 배출라인(60)에 연결되고 타단이 백필터(10)의 내부로 연장된 제1 피드백라인(91)과 제1 피드백라인(91)에서 다수개로 분기되어 필터백(16)의 상부로 연장된 제2 피드백라인(92)으로 이루어진다. 이때, 처리가스 배출라인(60)에는 삼방밸브가 형성되어 처리가스의 흐름방향을 조절하는 것이 바람직하다. 이와 같은 처리가스 피드백라인(90)에 의해서 백필터(10)에서 배출되는 처리가스를 이용하기 때문에 처리가스에 포함된 메탄의 농도가 변화되는 것을 방지할 수 있게 된다.The processing gas feedback line 90 has one end connected to the processing gas discharge line 60 and the other end extending to the upper part of the separation plate 14, and the processing gas of the processing gas discharge line 60 is passed to the separation plate 14. Re-supply to the top. The process gas discharge line 60 is a plurality of first feedback lines 91 and first feedback lines 91 having one end connected to the process gas discharge line 60 and the other end extending into the inside of the bag filter 10. It is composed of a second feedback line 92 branched and extending to the top of the filter bag 16. At this time, it is preferable that a three-way valve is formed in the processing gas discharge line 60 to control the flow direction of the processing gas. Since the processing gas discharged from the bag filter 10 is used by the processing gas feedback line 90, it is possible to prevent the concentration of methane included in the processing gas from changing.
처리가스 분사구(100)는 처리가스 피드백라인(90)에서 필터백(16)의 내부로 연장되어 있으며 처리가스를 필터백(16)의 내부로 분사한다. 이때, 처리가스 분사구(100)는 처리가스 피드백라인(90)이 제1 피드백라인(91)과, 제2 피드백라인(92)으로 이루어진 경우 제2 피드백라인(92)에 연결되어 필터백(16)의 내부로 연장되게 된다. 이러한 처리가스 분사구(100)에서 분사되는 처리가스는 필터백(16)의 외면에 붙어있는 황화철, 수산화철분말에 충격을 주어 낙하시키게 된다.The processing gas nozzle 100 extends from the processing gas feedback line 90 into the filter bag 16 and injects the processing gas into the filter bag 16 . At this time, the processing gas nozzle 100 is connected to the second feedback line 92 when the processing gas feedback line 90 consists of the first feedback line 91 and the second feedback line 92, so that the filter bag 16 ) extends into the interior of the The processing gas injected from the processing gas nozzle 100 gives an impact to the iron sulfide and iron hydroxide powder attached to the outer surface of the filter bag 16 to cause them to fall.
압축기(110)는 처리가스 피드백라인(90)에 위치하면서 처리가스 배출라인(60)의 처리가스를 흡입하여 처리가스 피드백라인(90)으로 공급한다. 이때, 압축기(110)는 처리가스를 펄스방식으로 공급하도록 작동되는 것이 바람직하다.The compressor 110 is located in the process gas feedback line 90 and sucks the process gas from the process gas discharge line 60 and supplies it to the process gas feedback line 90 . At this time, the compressor 110 is preferably operated to supply the process gas in a pulsed manner.
재투입라인(120)은 일단이 백필터(10)의 하단에 형성된 포집부(13)에 연결되고, 타단이 바이오가스 공급라인(30)에 연결되어 포집부(13)에 포집된 황화철 분말과 미반응 수산화철분말을 바이오가스 공급라인(30)으로 재투입한다. 이때, 재투입라인(120)에는 황화철 분말과 미반응 수산화철분말의 공급량을 조절하는 조절밸브가 형성되는 것이 바람직하다. 이러한 재투입라인(120)으로 미반응 수산화철분말을 황화수소에 접촉되도록 재사용할 수 있게 된다.The re-introduction line 120 has one end connected to the collection unit 13 formed at the lower end of the bag filter 10 and the other end connected to the biogas supply line 30, and the iron sulfide powder collected in the collection unit 13 and The unreacted iron hydroxide powder is reintroduced into the biogas supply line (30). At this time, it is preferable that a control valve for controlling the supply amount of the iron sulfide powder and the unreacted iron hydroxide powder is formed in the re-injection line 120. With this re-injection line 120, unreacted iron hydroxide powder can be reused in contact with hydrogen sulfide.
건식탈황탑(130)은 하부 일측으로 처리가스 배출라인(60)이 연결되고, 내부에 탈황제가 위치하고 있으며 상부 일측으로 처리가스 배출구가 형성된다. 건식탈황탑(130)은 처리가스 배출라인(60)으로 공급되는 처리가스에 포함된 잔여 황화수소를 제거한다. 이러한 건식탈황탑(130)은 최초 고농도의 황화수소가 포함된 바이오가스를 직접 처리하는 것보다 탈황제의 교체주기가 감소되어 운영비용을 저감시키고 안정적으로 황화수소를 제거한 상태로 배출시킬 수 있게 된다.In the dry desulfurization tower 130, a process gas discharge line 60 is connected to one side of the lower part, a desulfurization agent is located therein, and a process gas discharge port is formed at one side of the upper part. The dry desulfurization tower 130 removes residual hydrogen sulfide contained in the processing gas supplied to the processing gas discharge line 60 . In this dry desulfurization tower 130, the replacement cycle of the desulfurization agent is reduced compared to directly processing biogas containing high concentration of hydrogen sulfide at first, thereby reducing operating costs and stably discharging hydrogen sulfide in a state of being removed.
제어부(140)는 차압센서(80)에서 측정된 압력이 기준 이상이면 흡입팬(70)의 작동을 작동시키고 압축기(110)를 작동을 중지시키고, 차압센서(80)에서 측정된 압력이 기준 이하이면 흡입팬(70)의 작동을 중지시키고 압축기(110)를 작동시킨다. 또한, 제어부(140)는 포집부(13)에 포집된 황화철과 미반응 수산화철분말이 재투입라인(120)으로 공급되도록 제어한다.The control unit 140 operates the suction fan 70 and stops the operation of the compressor 110 when the pressure measured by the differential pressure sensor 80 is higher than the standard, and the pressure measured by the differential pressure sensor 80 is lower than the standard. The operation of the back suction fan 70 is stopped and the compressor 110 is operated. In addition, the control unit 140 controls the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 to be supplied to the re-input line 120 .
이하 본 발명에 따른 수산화철분말을 이용한 바이오가스 처리장치의 작동상태를 살펴본다.Hereinafter, the operating state of the biogas processing apparatus using iron hydroxide powder according to the present invention will be described.
제어부(140)가 백필터(10)의 처리가스 배출라인(60)에 위치하는 흡입팬(70)을 작동시키면 바이오가스 저장장치(20)에 저장된 바이오가스가 바이오가스 공급라인(30)을 통해 백필터(10)의 하부로 공급된다. When the control unit 140 operates the suction fan 70 located in the processing gas discharge line 60 of the bag filter 10, the biogas stored in the biogas storage device 20 passes through the biogas supply line 30. It is supplied to the lower part of the bag filter (10).
그리고, 바이오가스 공급라인(30)에 연결된 수산화철분말 투입라인(50)으로 수산화철분말이 공급되어 혼합된다. 이때, 수산화철분말의 투입은 바이오가스 공급라인(30)에서 공급되는 바이오가스의 유량에 의해 발생되는 음압으로 수산화철분말을 공급하여 고르게 혼합시키면서 함께 공급되도록 하는 것이 바람직하다.Then, the iron hydroxide powder is supplied to the iron hydroxide powder input line 50 connected to the biogas supply line 30 and mixed. At this time, it is preferable to supply the iron hydroxide powder with a negative pressure generated by the flow rate of the biogas supplied from the biogas supply line 30 so that the iron hydroxide powder is evenly mixed and supplied together.
백필터(10)의 내부로 공급된 수산화철분말은 바이오가스의 황화수소와 반응하면서 황화철 분말을 형성하면서 상부로 이동하지만 필터백(16)에 의해 차단되어 필터백(16)의 표면에 밀착되게 된다. 또한, 황화수소가 제거된 바이오가스는 백필터를 통과하면서 처리가스 배출라인(60)을 통해 배출된다. 이때, 황화수수와 미반응된 수산화철분말은 흡입팬(70)의 흡입력으로 백필터의 구멍을 통과하지 못하게 외벽에 밀착된 상태로 황화수소와 지속적으로 반응하여 제거하게 된다.The iron hydroxide powder supplied to the inside of the bag filter 10 reacts with the hydrogen sulfide of the biogas to form iron sulfide powder while moving upward, but is blocked by the filter bag 16 and adheres to the surface of the filter bag 16. In addition, the biogas from which hydrogen sulfide has been removed is discharged through the process gas discharge line 60 while passing through the bag filter. At this time, the hydrogen sulfide and the unreacted iron hydroxide powder are removed by continuously reacting with hydrogen sulfide in a state in close contact with the outer wall so that they do not pass through the hole of the bag filter by the suction force of the suction fan 70.
한편, 제어부(140)는 차압센서(80)에서 측정된 처리가스의 압력이 기준 이하이면 흡입팬(70)의 작동을 중지시키고 압축기(110)를 작동시켜 킨다. 이에 따라 처리가스 배출라인(60)의 처리가스는 처리가스 피드백라인(90)를 거쳐 필터백(16)장치 내부의 처리가스 분사구(100)를 통해 필터백(16)의 내부에서 분사되어 필터백(16)의 구멍을 막고 있던 황화철과 미반응 수산화철분말이 분리되면서 백필터(10)의 하단으로 낙하되어 분리된다. 이때, 압축기(110)는 처리가스의 분사와 중단을 반복하는 펄스형태로 작동되는 것이 바람직하다.Meanwhile, the control unit 140 stops the operation of the suction fan 70 and turns on the compressor 110 when the pressure of the processing gas measured by the differential pressure sensor 80 is below the standard. Accordingly, the processing gas of the processing gas discharge line 60 is injected from the inside of the filter bag 16 through the processing gas nozzle 100 inside the filter bag 16 device via the processing gas feedback line 90 As the iron sulfide and unreacted iron hydroxide powder blocking the hole of (16) are separated, they fall to the lower end of the bag filter (10) and are separated. At this time, it is preferable that the compressor 110 is operated in a pulse form repeating injection and interruption of the processing gas.
그 후, 다시 제어부(140)가 백필터(10)의 처리가스 배출라인(60)에 위치하는 흡입팬(70)을 작동시키면 바이오가스 공급라인(30)으로 새로운 바이오가스가 백필터(10)의 하부로 공급되게 된다. Then, when the control unit 140 operates the suction fan 70 located in the process gas discharge line 60 of the bag filter 10 again, new biogas flows through the bag filter 10 through the biogas supply line 30. will be supplied to the bottom of
한편, 백필터(10)의 하단에 형성된 포집부(13)에 포집된 황화철과 미반응 수산화철분말은 바이오가스 배출라인에 연결된 재투입라인(120)을 통해 일부가 공급되어 미반응 수산화철을 재사용하게 된다. 이러한 재투입라인(120)으로 미반응 수산화철분말을 황화수소에 접촉되도록 재사용할 수 있게 된다.Meanwhile, some of the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 formed at the lower end of the bag filter 10 is supplied through the re-input line 120 connected to the biogas discharge line to reuse the unreacted iron hydroxide. do. With this re-injection line 120, unreacted iron hydroxide powder can be reused in contact with hydrogen sulfide.
그리고, 처리가스 배출라인(60)으로 배출되는 처리가스는 건식탈황탑(130)으로 공급되어 처리가스에 포함된 잔여 황화수소가 제거된 후에 배출되게 된다.And, the processing gas discharged through the processing gas discharge line 60 is supplied to the dry desulfurization tower 130 to be discharged after the remaining hydrogen sulfide contained in the processing gas is removed.
이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described in.
본 발명에 따른 수산화철분말을 이용한 바이오가스 처리장치에 의하면, 바이오가스에 포함된 고농도의 황화수소를 수산화철분말과 함께 백필터에 공급하여 황화수소를 간단하게 제거할 수 있다는 점에서, 기존 기술의 한계를 뛰어 넘음에 따라 관련 기술에 대한 이용만이 아닌 적용되는 장치의 시판 또는 영업의 가능성이 충분할 뿐만 아니라 현실적으로 명백하게 실시할 수 있는 정도이므로 산업상 이용가능성이 있는 발명이다.According to the biogas treatment device using iron hydroxide powder according to the present invention, it is possible to simply remove hydrogen sulfide by supplying high-concentration hydrogen sulfide contained in biogas together with iron hydroxide powder to a bag filter, beyond the limits of the existing technology. According to the above, not only the use of related technology, but also the possibility of marketing or business of the applied device is sufficient, and it is an invention with industrial applicability because it can be clearly implemented in reality.

Claims (8)

  1. 하부로 황화수소가 포함된 바이오가스가 유입되고, 상부로 필터백(16)을 통과한 처리가스가 배출되며 중앙부분에 필터백(16)이 형성된 백필터(10)와; a bag filter (10) into which biogas containing hydrogen sulfide is introduced to the bottom, processed gas passing through the filter bag (16) is discharged to the top, and a filter bag (16) is formed at the center;
    바이오가스를 백필터(10)로 공급하는 바이오가스 공급라인(30)과; A biogas supply line 30 for supplying biogas to the bag filter 10;
    바이오가스 공급라인(30)에 연결되어 수산화철분말을 투입하는 수산화철분말 투입라인(50)과; An iron hydroxide powder input line 50 connected to the biogas supply line 30 and inputting iron hydroxide powder;
    백필터(10)의 처리가스로 배출하는 처리가스 배출라인(60)과; a process gas discharge line 60 for discharging the process gas of the bag filter 10;
    처리가스 배출라인(60)에 위치하면서 백필터(10)의 처리가스를 흡입하는 흡입팬(70)과; a suction fan 70 located in the process gas discharge line 60 and sucking the process gas of the bag filter 10;
    백필터(10)의 처리가스의 압력을 측정하는 차압센서(80)과; a differential pressure sensor 80 for measuring the pressure of the processing gas of the bag filter 10;
    일단이 처리가스 배출라인(60)에 연결되고 타단이 필터백(16)의 상부로 연장되어 있으며 처리가스 배출라인(60)의 처리가스를 재공급하는 처리가스 피드백라인(90)과; a process gas feedback line 90 having one end connected to the process gas discharge line 60 and the other end extending above the filter bag 16 and resupplying the process gas from the process gas discharge line 60;
    처리가스 피드백라인(90)에서 필터백(16)의 내부로 연장되어 있으며 처리가스를 필터백(16)의 내부로 분사하는 처리가스 분사구(100)와; a processing gas nozzle 100 extending from the processing gas feedback line 90 into the filter bag 16 and injecting processing gas into the filter bag 16;
    처리가스 피드백라인(90)에 위치하면서 처리가스 배출라인(60)의 처리가스를 흡입하여 처리가스 피드백라인(90)으로 공급하는 압축기(110)와; a compressor 110 located in the processing gas feedback line 90 and sucking processing gas from the processing gas discharge line 60 and supplying the processing gas to the processing gas feedback line 90;
    차압센서(80)에서 측정된 압력이 기준 이상이면 흡입팬(70)의 작동을 작동시키고 압축기(110)를 작동을 중지시키고, 차압센서(80)에서 측정된 압력이 기준 이하이면 흡입팬(70)의 작동을 중지시키고 압축기(110)를 작동시키는 제어부(140)를 포함하는 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.When the pressure measured by the differential pressure sensor 80 is higher than the standard, the suction fan 70 is operated and the compressor 110 is stopped, and when the pressure measured by the differential pressure sensor 80 is lower than the standard, the suction fan 70 ) Biogas treatment apparatus using iron hydroxide powder, characterized in that it comprises a control unit 140 for stopping the operation and operating the compressor 110.
  2. 청구항 1에 있어서, 백필터는 하부 일측에 외부로부터 황화수소가 포함된 바이오가스와 수산화철분말의 혼합물이 유입되는 혼합물 공급구(11)가 형성되고, 상부 일측에 필터백(16)을 통과하면서 황화수소가 제거된 처리가스가 배출되는 처리가스 배출구(12)가 형성되며, 하단에 황화철 분말 또는 미반응 수산화철분말을 외부로 배출하는 포집부(13)가 형성되고, 내부의 혼합물 공급구(11)와 처리가스 배출구(12)를 분리시키며 다수개의 관통홈(15)이 형성된 분리판(14)이 형성되고, 원통형상으로 상단이 분리판(14)의 관통홈(15)에 위치하면서 분리판(14)의 하부로 연장되게 위치하며 표면에 수산화철분말의 유입을 차단할 수 있는 구멍이 형성된 필터백(16)이 위치하는 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The method according to claim 1, the bag filter has a mixture supply port (11) through which a mixture of biogas containing hydrogen sulfide and iron hydroxide powder is introduced from the outside on one side of the bottom, and hydrogen sulfide passes through the filter bag (16) on one side of the top. A processing gas outlet 12 through which the removed processing gas is discharged is formed, and a collection unit 13 for discharging iron sulfide powder or unreacted iron hydroxide powder to the outside is formed at the lower end, and the mixture supply port 11 and the treatment gas therein are formed. Separating the gas outlet 12, a separator plate 14 having a plurality of through grooves 15 is formed. Biogas treatment device using iron hydroxide powder, characterized in that the filter bag 16 is positioned to extend to the lower part and has a hole formed on the surface to block the inflow of iron hydroxide powder.
  3. 청구항 1에 있어서, 수산화철분말은 100~200mesh 인 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The biogas treatment device using iron hydroxide powder according to claim 1, wherein the iron hydroxide powder has a size of 100 to 200 mesh.
  4. 청구항 1에 있어서, 수산화철분말 투입라인(50)은 바이오가스 공급라인(30)보다 직경이 작게 형성되어 바이오가스 공급라인(30)에서 공급되는 바이오가스의 공급유량에 의해 발생되는 음압으로 수산화철분말을 공급하는 것을 특징으로 한다.The method according to claim 1, wherein the iron hydroxide powder input line 50 is formed to have a smaller diameter than the biogas supply line 30, so that the iron hydroxide powder is supplied by the negative pressure generated by the supply flow rate of the biogas supplied from the biogas supply line 30. characterized by supplying
  5. 청구항 1에 있어서, 처리가스 피드백라인(90)은 일단이 처리가스 배출라인(60)에 연결되고 타단이 백필터(10)의 내부로 연장된 제1 피드백라인(91)과 제1 피드백라인(91)에서 다수개로 분기되어 필터백(16)의 상부로 연장된 제2 피드백라인(92)으로 이루어지고, 처리가스 분사구(100)는 제2 피드백라인(92)에 연결되어 필터백(16)의 내부로 연장된 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The process gas feedback line 90 according to claim 1, wherein one end is connected to the process gas discharge line 60 and the other end extends into the bag filter 10. The first feedback line 91 and the first feedback line ( 91) branched into a plurality of second feedback lines 92 extending to the top of the filter bag 16, and the processing gas nozzle 100 is connected to the second feedback line 92 to form a filter bag 16 Biogas processing apparatus using iron hydroxide powder, characterized in that extended into the interior of.
  6. 청구항 1에 있어서, 압축기(110)는 처리가스를 펄스방식으로 공급하도록 작동되는 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The biogas processing apparatus using iron hydroxide powder according to claim 1, characterized in that the compressor 110 is operated to supply the processing gas in a pulsed manner.
  7. 청구항 1에 있어서, 일단이 백필터(10)의 하단에 형성된 포집부(13)에 연결되고, 타단이 바이오가스 공급라인(30)에 연결되어 포집부(13)에 포집된 황화철 분말과 미반응 수산화철분말을 바이오가스 공급라인(30)으로 재투입하는 재투입라인(120)을 더 포함하고, 제어부(140)는 포집부(13)에 포집된 황화철과 미반응 수산화철분말이 재투입라인(120)으로 공급되도록 제어하는 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The method according to claim 1, one end is connected to the collection unit 13 formed at the lower end of the bag filter 10, the other end is connected to the biogas supply line 30, and the iron sulfide powder collected in the collection unit 13 and unreacted It further includes a re-injection line 120 for re-injecting iron hydroxide powder into the biogas supply line 30, and the control unit 140 controls the iron sulfide and unreacted iron hydroxide powder collected in the collecting unit 13 to be re-injected into the re-injection line 120. ) Biogas processing apparatus using iron hydroxide powder, characterized in that for controlling to be supplied.
  8. 청구항 1 내지 청구항 7 중의 어느 한 항에 있어서, 황화수소가 포함된 바이오가스가 저장되며 바이오가스 공급라인(30)으로 바이오가스를 공급하는 바이오가스 저장장치(20)와; 수산화철분말이 저장되며 수산화철분말 투입라인(50)으로 수산화철분말을 공급하는 수산화철분말 저장장치(40)와; 내부에 탈황제가 위치하고 있으며 상부 일측으로 처리가스 배출구(12)가 형성되어 처리가스 배출라인(60)으로 공급되는 처리가스에 포함된 잔여 황화수소를 제거하는 건식탈황탑(130);를 더 포함하는 것을 특징으로 하는 수산화철분말을 이용한 바이오가스 처리장치.The biogas storage device according to any one of claims 1 to 7, wherein the biogas containing hydrogen sulfide is stored and the biogas storage device 20 supplies the biogas to the biogas supply line 30; An iron hydroxide powder storage device 40 for storing iron hydroxide powder and supplying the iron hydroxide powder to the iron hydroxide powder input line 50; A dry desulfurization tower 130 in which a desulfurization agent is located and a processing gas outlet 12 is formed on one side of the upper portion to remove residual hydrogen sulfide contained in the processing gas supplied to the processing gas discharge line 60; Biogas processing device using iron hydroxide powder, characterized in that.
PCT/KR2022/012446 2021-09-03 2022-08-19 Biogas processing device using iron hydroxide powder WO2023033423A1 (en)

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Citations (5)

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JP2001058117A (en) * 1999-08-23 2001-03-06 Chugai Ro Co Ltd Method for treating exhaust gas and apparatus thereof
JP2008024752A (en) * 2006-07-18 2008-02-07 Mitsubishi Heavy Ind Ltd Biomass gasification system and method
US20090064578A1 (en) * 2007-06-15 2009-03-12 Theegala Chandra S Biomass Gasifier System with Low Energy and Maintenance Requirements
KR20090034031A (en) * 2007-10-02 2009-04-07 미래엔이티 주식회사 Method and apparatus for removing nasty smell from exhaust gas using bag filter
JP2009242714A (en) * 2008-03-31 2009-10-22 Mitsui Eng & Shipbuild Co Ltd Waste gasification disposal system

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KR102270488B1 (en) 2020-01-21 2021-06-29 (주)이앤켐솔루션 Biogas purification apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001058117A (en) * 1999-08-23 2001-03-06 Chugai Ro Co Ltd Method for treating exhaust gas and apparatus thereof
JP2008024752A (en) * 2006-07-18 2008-02-07 Mitsubishi Heavy Ind Ltd Biomass gasification system and method
US20090064578A1 (en) * 2007-06-15 2009-03-12 Theegala Chandra S Biomass Gasifier System with Low Energy and Maintenance Requirements
KR20090034031A (en) * 2007-10-02 2009-04-07 미래엔이티 주식회사 Method and apparatus for removing nasty smell from exhaust gas using bag filter
JP2009242714A (en) * 2008-03-31 2009-10-22 Mitsui Eng & Shipbuild Co Ltd Waste gasification disposal system

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