A cikin kowane tsarin masana'antu na samar da syngas, yana da muhimmiyar hanyar haɗi don amfani da ci gaban canjin iskar gas na ruwa don canza CO zuwa hydrogen.
Wannan dauki wani reverive exothermic dauki. Mafi girman zafin jiki, ƙananan juzu'in ma'auni daidai. A lokaci guda, wannan halayen halayen halayen motsa jiki ne na yau da kullun. Lokacin da babu mai haɓakawa, yana da wuya a amsawa a 700. A gaban mai haɓakawa, yawan zafin jiki yana raguwa sosai. Lokacin amfani da babban zafin jiki motsi mai kara kuzari, yawan zafin jiki shine 300 ~ 500 ° C; Lokacin da aka yi amfani da ƙananan zafin motsi mai haɓakawa, zafin jiki shine 200-400 ° C (tebur 22). Saboda abin da ya faru shine halayen isomolecular, matsa lamba ba shi da wani tasiri akan ma'auni na amsawa, amma aikin matsa lamba na iya inganta ƙarfin samarwa da ƙimar amsawa.
A matakin farko na amsawa, tsarin yana da nisa daga iyakar ma'auni kuma ana sarrafa shi ta hanyar motsi. Ƙara yawan zafin jiki zai iya inganta haɓakar amsawa da inganta ingantaccen tsari. A cikin mataki na gaba na amsawa, jujjuya tsarin yana iyakance ta ma'aunin thermodynamic. Canjin ma'auni na thermodynamic a babban zafin jiki yana da ɗan ƙaramin ƙarfi. Sabili da haka, a cikin mataki na gaba na amsawa, ya kamata a ɗauki aikin ƙananan zafin jiki don inganta canjin CO. Halayen thermodynamic da motsin motsi na tsari sun ƙayyade cewa tsarin jujjuyawar CO ya kamata ya ɗauki aiki mai sauyin yanayi.
A matakin farko na amsawa, tsarin yana da nisa daga iyakar ma'auni kuma ana sarrafa shi ta hanyar motsi. Ƙara yawan zafin jiki zai iya inganta haɓakar amsawa da inganta ingantaccen tsari. A cikin mataki na gaba na amsawa, jujjuya tsarin yana iyakance ta ma'aunin thermodynamic. Canjin ma'auni na thermodynamic a babban zafin jiki yana da ɗan ƙaramin ƙarfi. Sabili da haka, a cikin mataki na gaba na amsawa, ya kamata a ɗauki aikin ƙananan zafin jiki don inganta canjin CO. Halayen thermodynamic da motsin motsi na tsari sun ƙayyade cewa tsarin jujjuyawar CO ya kamata ya ɗauki aiki mai sauyin yanayi.
Saboda ƙuntatawa ma'auni na amsawa, ko da yake CO yana da zurfi sosai bayan canzawar iskar gas mai ƙarancin zafi, abun ciki har yanzu yana kusan 1%, wanda ba zai iya biyan bukatun amfani da yawancin matakai na gaba ba. A cikin masana'antu, yawanci ana cire shi ta wasu halayen sinadarai. Zaɓin oxidation na CO da O2 a gaban babban adadin hydrogen yana haifar da CO2, kuma hydrogen da O2 suna da sauƙin amsawa. Saboda haka, tsarin ya dogara sosai akan yanayin zafin jiki da nau'in mai kara kuzari [29301].
Wani tsari na masana'antu shine hydrogenation na CO tare da adadi mai yawa na hydrogen da ke wanzu kai tsaye a kan tushen nickel don samar da methane.
Bayan canjin gas na ruwa da cirewar CO, manyan abubuwan da ke cikin iskar gas sun zama H2 da CO2. A cikin masana'antar ammonia na roba, CO2 yana buƙatar rabuwa da farko. Wadannan CO2 na iya ci gaba da amsawa tare da ammonia da hydrogen ke samarwa a cikin sashin da ya biyo baya don samar da ammonium bicarbonate, ammonium carbonate ko urea da sauran takin mai magani don gane iyakar amfani da CO2. A cikin wannan tsari, fasahar rabuwa na CO2 da H2 galibi don tabbatar da cewa za'a iya sake yin amfani da CO2.
Don aikace-aikacen hydrogen kamar ƙwayoyin man fetur na proton membrane, ana amfani da hydrogen kawai maimakon CO2. CO2 ya zama hayaƙin da ba shi da amfani, wanda ƙila za a buƙaci a haɗa shi tare da sauran hanyoyin samar da ma'adinai (kamar samar da sinadarin calcium carbonate).
Duk da haka, a cikin dukkan matakai na rabuwa na CO2, hanya ce mafi kyau don amfani da amine Organic ko methanol don sha CO2. Musamman a cikin tsari na CO2 sha ta methanol a ƙananan zafin jiki, solubility na yawancin gas zai zama mafi girma a ƙananan zafin jiki. Kawai solubility na hydrogen ba'a iyakance ta zafin jiki ba, kuma ƙananan zafin jiki, ƙananan solubility. Yana nuna kyakkyawan zaɓi don rabuwar H2.
A cikin aiwatar da murmurewa CO2, a kan jigo na guje wa lalacewa ga hydrogen amfanin ƙasa, kokarin kauce wa yin amfani da tsada reagents (kamar caustic soda) wanda zai iya karfi da hadawa da CO, don tabbatar da tattalin arzikin na tsari.
Lokacin aikawa: Dec-10-2021
