当前位置: X-MOL 学术Chem. Eng. Process. Process Intensif. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A new approach for integrated system of biomass gasification combined reforming and desulfurization processes consisting of Ni/Al2O3 and Cu-Zn2TiO4 heterostructure ceramic filters
Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.cep.2021.108433
Özlem Tuna , Esra Bilgin Simsek , Alper Sarıoğlan

Integrated gasification processes have been presented as a potential solution to intensify performance by combining unit operations. Hence, this study was aimed to arrange desulfurization and hydrocarbon reforming stages in series for biomass gasification technology. Cu-Zn2TiO4 incorporated with CaSiO3 filters (CuZT/pCF) were successfully synthesized by ball-milling for desulfurization step. The characterizations of the samples indicated CuZT grains were effectively placed into the host lattice. 20%CuZT loading remarkably enhanced the sulfur capture under reducing (48.1%) and oxidizing (39.8%) atmospheres by increasing affinity and preventing diffusion limitation. Besides, the impregnated filter with Ni/Al2O3 exhibited higher catalytic activity towards simultaneously CH4 (73%) and C6H6 (85%) reforming, however the performances were decreased in the presence of H2S. The hindered performance was accomplished by integrating the catalyst filter with the 20%CuZT/pCF adsorbent in two-stage removal process. The integrated process displayed superior reforming efficiencies for methane and benzene degradation in the H2S atmosphere, which were 10 times higher for methane and 1.15 times higher for benzene than that of the single stage system. Meanwhile, the desulfurization rate of 71% was achieved at the end of 5 h. Herein, the innovative concept was found to be promising consecutive removal process for desulfurization and substantially hydrocarbon cracking.



中文翻译:

Ni / Al 2 O 3和Cu-Zn 2 TiO 4异质结构陶瓷滤池组成的生物质气化重整与脱硫联合工艺的集成系统新方法

集成气化工艺已被提出作为通过组合单元操作来增强性能的潜在解决方案。因此,本研究旨在为生物质气化技术安排一系列的脱硫和碳氢化合物重整阶段。通过球磨成功地合成了掺有CaSiO 3滤料(CuZT / pCF)的Cu-Zn 2 TiO 4。样品的表征表明,CuZT晶粒有效地置于了主晶格中。通过增加亲和力和防止扩散限制,负载20%CuZT可以显着提高还原气氛(48.1%)和氧化气氛(39.8%)下的硫捕获率。此外,Ni / Al 2 O 3浸渍过滤器在同时进行CH 4(73%)和C 6 H 6(85%)重整时显示出较高的催化活性,但是在H 2 S存在下性能降低。通过将催化剂过滤器与20%的催化剂结合使用可降低性能两阶段去除过程中的CuZT / pCF吸附剂。集成工艺显示出H 2中甲烷和苯降解的卓越重整效率S气氛比单级系统的甲烷高10倍,苯高1.15倍。同时,在5 h结束时脱硫率达到71%。在本文中,发现了创新的概念是有希望的用于脱硫和基本上烃裂化的连续去除方法。

更新日期:2021-05-11
down
wechat
bug