壳牌干煤粉气化技术与壳牌下行水激冷流程气化技术的比较

Comparison of Shell Coal Gasification Technology with Shell Coal Gasification Process Bottom Quench

继壳牌干煤粉气化技术(SCGP)进入中国市场后,壳牌公司又开发了下行水激冷流程气化技术(SCGP Bottom Quench),以简化传统流程,消除干灰堵塞问题,降低投资成本。本文从工艺特点、气化炉结构、设备布置以及投资成本等方面进行了2种气化技术的比较,分别指出了SCGP和SCGP Bottom Quench的优势和劣势,结果表明:1传统的SCGP工艺技术成熟可靠,热回收率高,经济环保,但项目前期投资较大,装置设备较多,施工吊装与管道布置难度较大;2新开发的SCGP Bottom Quench气化炉结构简单,装置设备减少,项目投资缩减,但国内仅有1套装置投产运行,其环保性能和装置的稳定性有待观察。

Afterwards entering the Chinese market of Shell coal gasification technology, Shell Company has again developed the bottom water quench process gasification technology in order to simplify traditional process, to eliminate stoppage problem of dried ash, and to decrease the investment cost. Author has made comparison for 2 kinds of gasification technologies from aspects of process feature, gasifier structure, equipment arrangement, investment cost and so on, has separately indicated the advantage and shortage between Shell dried and pulverized coal gasification technology and the bottom water quench process gasification technology, result indicates that：①The traditional Shell dried and pulverized coal gasification process technology is ripe and reliable with high heat recovery rate, better economy and environmental protection, but with more investment cost at present stage, more equipment in plant, more difficulty in construction/installation and in piping arrangement ;②The structure of gasifier is simple forbottom water quench process gasification technology newly developed with less equipment in plant, less investment of project, but only one set of plant is now put into operation, so its environment protection property and stability of plant are required to be observed.