高含量煤在超临界水中气化制氢的实验研究.pdfVIP

第42卷 第7期 西 安 交 通 大 学 学 报 Vo1．42 №7 2008年7月 JOURNAL OF XI AN JIAOTONG UNIVERSITY Ju1．2008 高含量煤在超临界水中气化制氢的实验研究 李永亮，郭烈锦，张明颛，薛晓欧，曹长青，陈敬炜 (西安交通大学动力工程多相流国家重点实验室，710049，西安) 摘要：针对当前煤在超临界水气化制氢研究中存在的物料质量分数低于5 9／6、实验装置以高压釜 居多且不能连续稳定产氢等问题，以高含量煤的气化制氢为研究目的，在反应器壁温650~800℃、 反应压力23~27 MPa、物料流量3～7 kg／h的条件下，利用连续管流式反应系统对高含量煤进行 了超临界水气化制氢实验研究，考察了温度、压力、物料流量、催化剂及氧化剂和物料含量对气化效 果的影响规律，成功地将质量分数为16 9／6的煤输送进反应器并稳定产气，煤的气化率和氢气产率 分别为0．317和0．022． 关键词：煤；超临界水；气化；制氢 中图分类号：TK91 文献标志码：A 文章编号：0253—987X(2O08)07—0919—06 Hydrogen Production by Gasification 0f Higll Concentration Coal in Supercritical Water LI Yongliang，GUO Liejin，ZHANG Mingzhuan，XUE Xiao OU，CAO Changqing，CHEN Jingwei (State Key Laboratory of Multiphase Flow in Power Engineering，Xi an Jiaotong University，Xi an 710049，China) Abstract：The problems in hydrogen production from coal gasification in supercritical water in— clude low concentration of coal feedstock，discontinuous hydrogen production due to utilizing au— toclave，and SO on．Our work focuses on hydrogen production by gasification of high concentra— tion coal in supercritical water．An experiment was carried out in a continuous-flow reactor sys— tem，where coal is gasified under the conditions of temperature at 650—800℃ 。pressure at 23—27 MPa and flow rate from 3 to 7 kg／k The effects of main parameters(temperature，pressure， flow rate，catalyst，oxidant，concentration of coa1)were investigated．Mass fraction 1 6 of coal was successfully transported into the reactor and steadily gasified，hence its gasification efficiency and hydrogen yield rate reached to 0．3 1 7 and 0．022，respectively． Keywords：coal；supercritical water；gasification；hydrogen production 煤在超临界水中气化的技术是近些年发展起来 界水中气化，研究了Ca(OH)z对劣质煤的催化影