排序方式: 共有13条查询结果,搜索用时 421 毫秒
11.
为探讨生活垃圾和玉米秆共热解过程中的协同关系和产物分布,采用热重分析仪对生活垃圾、玉米秆及其混合物进行了热解实验研究,并进行动力学计算。结果表明,混合热解可分为脱水、热解、炭化、焦催化气化4个阶段,前3个阶段与单独热解过程类似,第4个阶段与单独热解相比失重明显增加,表明混合热解过程中存在协同效应;混合物热解的实际活化能为28.492 k J/mol,低于单独热解及其混合物热解理论活化能,可见混合热解利于热解反应进行。为明晰混合热解对热解反应的促进作用,利用固定床热解实验,研究了混合比例对产物产率和热解气各组分产率的影响。结果表明,在不同混合比例下,固液实际产率低于理论值,而气体实际产率则比理论值高;混合物料热解气中H2、CH4、CO2产量均高于其理论值,而CO产量却相反,低于其理论值。 相似文献
12.
Zhiming Gu Quanyuan Cai Yan Liu Fengsheng Li 《Journal of Polymers and the Environment》2013,21(2):479-486
The electrochemical degradation of chitosan using Ti/Sb–SnO2 electrode was studied in this work. The experimental results showed that as a non-active electrode with high oxygen potential, Ti/Sb–SnO2 electrode had a good efficiency for degrading chitosan. The kinetic behavior of electrochemical degradation of chitosan using Ti/Sb–SnO2 electrode and the function relationship between experimental parameters and degradation rate constant were also investigated. The kinetic analysis revealed that this electrochemical process using Ti/Sb–SnO2 electrode obeyed the zeroth–order reaction kinetics under the experimental conditions examined. The degradation rate constant at Ti/Sb–SnO2 electrode had the linear relationship with 1.13 power of current density, ?1.36 power of initial concentration of chitosan and 0.19 power of concentration of acetic acid, The temperature dependences of the degradation rate constant could be expressed by the Arrhenius equation. The concentration of sodium acetate had a negligible influence on the degradation rate constant. 相似文献
13.
Sadiq Muhammad Hsu Ching-Chi Zhang YunQian Chien Fengsheng 《Environmental science and pollution research international》2021,28(47):67167-67184
Environmental Science and Pollution Research - This research aims to look into the effect of COVID-19 on emerging stock markets in seven of the Association of Southeast Asian Nations’... 相似文献