Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis
The utilization of coal through the gasification process needs to be developed further, because this process is an alternative method to subtitute natural gas to produce the synthesis gas. In addition, this process can reduce environmental pollution as gasification technology is a clean technology a...
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| Format: | Thesis |
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[Yogyakarta] : Universitas Gadjah Mada
2012
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| _version_ | 1826045883502821376 |
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| author | , saripah sobah , Ir. Hary Sulistyo SU., Ph.D., |
| author_facet | , saripah sobah , Ir. Hary Sulistyo SU., Ph.D., |
| author_sort | , saripah sobah |
| collection | UGM |
| description | The utilization of coal through the gasification process needs to be developed further, because this process is an alternative method to subtitute natural gas to produce the synthesis gas. In addition, this process can reduce environmental pollution as gasification technology is a clean technology and it can reduce the amount of CO2 discharged to the atmosphere. This study aims to obtain data on potential conversion of bituminous coal into gas CO and observe the reaction kinetics of coal bituminous coal gasification from East Kalimantan using gas CO2 by adding Ca (OH)2 in the pyrolysis process. The expected benefit from this research is the obtaining of reaction kinetics and gasification process condition of bituminus coal. If this process was implemented, it will increase coal economic value and CO2 as side product of ammonia industry. Coal gasification process is conducted in a fixed bed reactor made of quartz 41.5 cm long, 3.81 cm inside diameter, outer diameter 3.97 cm, equipped with a cooling system, gas reservoir, water collection, thermocouple, manometer, regulators, and temperature control. Pyrolysis and gasification process was begun by flashing using nitrogen. Coal with a size of 4 to 5.6 mm powder was mixed with 10% Ca (OH)2 at a temperature of 700 °C and pyrolized for 90 minutes with a heating rate 20oC/minutes. Charcoal from the pyrolysis of coal weighed 10 grams then gasified with fixed heating rate at 20oC/minutes at the variation of temperature of 600oC, 700oC, 800oC, 900oC and 1000oC.. After the desired temperature is reached, the CO2 gas flowed at 544 ml / min. Gas sampling is done every 20-minute intervals for 2 hours. The variables studied were reaction temperature and the effect of adding Ca(OH)2.
The results showed that the gasification of coal char with the addition of Ca(OH)2 in the pyrolysis process have a significant effect on the conversion at a temperature of 700°C. The highest ratio of CO/CO2 at 800oC gasification temperature as 0.5683 mol CO/molCO2 with the reduction of CO2 gas of 63,17% with the CO2 gas flowed at 544 ml / min. Reaction kinetics of coal char gasification with CO2 can be approximated by a shrinking unreacted core model. The addition of Ca(OH)2 in the pyrolysis process parameters affect the value of k with the parameter of activation energy and frequency factor as 61.7135 kJ/ mol and 1.37/minute for gasification without the addition of Ca(OH)2 and 36.35 kJ/mol and 0.10/minute for gasification with the addition of Ca(OH)2. |
| first_indexed | 2024-03-13T22:44:29Z |
| format | Thesis |
| id | oai:generic.eprints.org:100990 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T22:44:29Z |
| publishDate | 2012 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:1009902016-03-04T08:49:45Z https://repository.ugm.ac.id/100990/ Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis , saripah sobah , Ir. Hary Sulistyo SU., Ph.D., ETD The utilization of coal through the gasification process needs to be developed further, because this process is an alternative method to subtitute natural gas to produce the synthesis gas. In addition, this process can reduce environmental pollution as gasification technology is a clean technology and it can reduce the amount of CO2 discharged to the atmosphere. This study aims to obtain data on potential conversion of bituminous coal into gas CO and observe the reaction kinetics of coal bituminous coal gasification from East Kalimantan using gas CO2 by adding Ca (OH)2 in the pyrolysis process. The expected benefit from this research is the obtaining of reaction kinetics and gasification process condition of bituminus coal. If this process was implemented, it will increase coal economic value and CO2 as side product of ammonia industry. Coal gasification process is conducted in a fixed bed reactor made of quartz 41.5 cm long, 3.81 cm inside diameter, outer diameter 3.97 cm, equipped with a cooling system, gas reservoir, water collection, thermocouple, manometer, regulators, and temperature control. Pyrolysis and gasification process was begun by flashing using nitrogen. Coal with a size of 4 to 5.6 mm powder was mixed with 10% Ca (OH)2 at a temperature of 700 °C and pyrolized for 90 minutes with a heating rate 20oC/minutes. Charcoal from the pyrolysis of coal weighed 10 grams then gasified with fixed heating rate at 20oC/minutes at the variation of temperature of 600oC, 700oC, 800oC, 900oC and 1000oC.. After the desired temperature is reached, the CO2 gas flowed at 544 ml / min. Gas sampling is done every 20-minute intervals for 2 hours. The variables studied were reaction temperature and the effect of adding Ca(OH)2. The results showed that the gasification of coal char with the addition of Ca(OH)2 in the pyrolysis process have a significant effect on the conversion at a temperature of 700°C. The highest ratio of CO/CO2 at 800oC gasification temperature as 0.5683 mol CO/molCO2 with the reduction of CO2 gas of 63,17% with the CO2 gas flowed at 544 ml / min. Reaction kinetics of coal char gasification with CO2 can be approximated by a shrinking unreacted core model. The addition of Ca(OH)2 in the pyrolysis process parameters affect the value of k with the parameter of activation energy and frequency factor as 61.7135 kJ/ mol and 1.37/minute for gasification without the addition of Ca(OH)2 and 36.35 kJ/mol and 0.10/minute for gasification with the addition of Ca(OH)2. [Yogyakarta] : Universitas Gadjah Mada 2012 Thesis NonPeerReviewed , saripah sobah and , Ir. Hary Sulistyo SU., Ph.D., (2012) Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis. UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=57594 |
| spellingShingle | ETD , saripah sobah , Ir. Hary Sulistyo SU., Ph.D., Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title | Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title_full | Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title_fullStr | Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title_full_unstemmed | Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title_short | Gasifikasi Arang Batubara Bituminus dengan Gas CO2 menggunakan Ca(OH)2 pada Proses Pirolisis |
| title_sort | gasifikasi arang batubara bituminus dengan gas co2 menggunakan ca oh 2 pada proses pirolisis |
| topic | ETD |
| work_keys_str_mv | AT saripahsobah gasifikasiarangbatubarabituminusdengangasco2menggunakancaoh2padaprosespirolisis AT irharysulistyosuphd gasifikasiarangbatubarabituminusdengangasco2menggunakancaoh2padaprosespirolisis |