發(fā)布時(shí)間：2018-06-07 08:12

  本文選題：生物質(zhì) + 熱解��； 參考：《華東理工大學(xué)》2017年碩士論文

【摘要】：本課題組自制的生物質(zhì)一體化制氫系統(tǒng)通過(guò)快速熱裂解、氣固同步轉(zhuǎn)化、水蒸氣催化重整可以有效制取富氫氣體。在此工藝基礎(chǔ)上,本論文研究主體分為三部分:不同金屬元素對(duì)一體化制氫系統(tǒng)的影響、K2CO3/CaO在一體化制氫系統(tǒng)的協(xié)同作用和生物質(zhì)炭催化重整生物油模擬物制氫研究�；谏镔|(zhì)一體化制氫工藝,考察了不同金屬元素K、Ca、Mg、Fe、Zn對(duì)玉米芯廢屑制氫過(guò)程中氫產(chǎn)率、產(chǎn)品氣組成以及碳轉(zhuǎn)化率的影響。結(jié)果表明,不同金屬元素催化效果依次為KFeMgCaZn,其中K元素的催化效果最為明顯。并在此基礎(chǔ)上,選擇K金屬作為添加催化劑,詳細(xì)探討了金屬元素對(duì)熱解及氣化過(guò)程的影響,結(jié)果表明,添加K金屬能夠促進(jìn)生物質(zhì)的熱解和氣固同步轉(zhuǎn)化過(guò)程。當(dāng)熱解溫度600℃及氣固同步轉(zhuǎn)化溫度850℃時(shí),潛在氫氣產(chǎn)率和碳轉(zhuǎn)化率達(dá)分別86.97g/kgbiomass和90.11%。對(duì)K2C03和CaO在一體化制氫中作用進(jìn)行研究,發(fā)現(xiàn)提高進(jìn)料中K2C03和CaO的含量都有助于提升一體化制氫效率。K2CO3有助于提高制氫系統(tǒng)的碳轉(zhuǎn)化率,而CaO可以顯著改變熱解和氣化后產(chǎn)品氣組成分布,提高氫氣濃度。研究還表明,添加K2CO3/Cao共同促進(jìn)了在生物質(zhì)一體化制氫系統(tǒng),氣固同步轉(zhuǎn)化溫度為850℃時(shí),達(dá)到最高的氫氣產(chǎn)率81.41g/kg biomass 和碳轉(zhuǎn)化率 91.58%。研究添加K2C03生物質(zhì)熱解后獲得的生物質(zhì)炭(K-biochar)作為催化劑對(duì)生物油模擬物重整制氫的影響,并對(duì)工藝條件進(jìn)行了考察,結(jié)果表明較高的溫度,適宜的S/B和WH SV有利于氫產(chǎn)率提高,即在溫度為900℃,水碳比為3,WHSV為1h-1的時(shí)候有最大氫產(chǎn)率87.12%和最大氫濃度73.68%。K-biochar有較好的催化活性,相比無(wú)添加劑熱解后生物質(zhì)碳(Raw-biochar)的實(shí)驗(yàn)氫產(chǎn)率提升了 11.99%
[Abstract]:On the basis of this technology, the main body of this paper is divided into three parts: the influence of different metal elements on the integrated hydrogen production system, and the synergy of K2CO3/CaO in the integrated hydrogen production system. Effect and catalytic reforming of biomass carbon for hydrogen production of bio oil simulants. Based on the integrated hydrogen production process of biomass, the effects of different metal elements K, Ca, Mg, Fe, Zn on hydrogen production, product gas composition and carbon conversion in the process of hydrogen production from waste chips were investigated. The results showed that the catalytic effect of different metal elements was KFeMgCaZn, including K yuan. On this basis, the effects of metal elements on the pyrolysis and gasification process are discussed in detail on the basis of the selection of K metal as a catalyst. The results show that the addition of K metal can promote the pyrolysis of biomass and the synchronous conversion process of gas solid. When the temperature of pyrolysis is 600 and the gas solid conversion temperature is 850, the potential hydrogen can be found. The gas yield and carbon conversion rate are 86.97g/kgbiomass and 90.11%. respectively. The effect of K2C03 and CaO on the integrated hydrogen production is studied. It is found that the increase of K2C03 and CaO content in the feed can help to improve the integrated hydrogen production efficiency.K2CO3 can help to improve the carbon conversion rate of the hydrogen production system, and CaO can significantly change the composition of the product gas after the pyrolysis and gasification. The study also showed that the addition of K2CO3/Cao to the biomass integrated hydrogen production system, when the gas solid synchronous conversion temperature was 850, reached the highest hydrogen yield 81.41g/kg biomass and carbon conversion rate 91.58%. to study the biomass carbon (K-biochar) obtained after the pyrolysis of K2C03 biomass (K-biochar) as a catalyst. The effects of the reformer and the process conditions were investigated. The results showed that the suitable S/B and WH SV were beneficial to the increase of hydrogen yield, that is, the maximum hydrogen yield 87.12% and the maximum hydrogen concentration 73.68%.K-biochar have better catalytic activity when the temperature is 900, the water carbon ratio is 3, and the WHSV is 1H-1. The hydrogen yield of biomass carbon (Raw-biochar) increased by 11.99% after pyrolysis.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TQ116.2

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