Usually a pipe, known as a dip leg, is connected to this bottom outlet and, in catalytic cracking, serves to convey the solids back to the catalyst bed.
一般有一个通称为料腿的管子与此底部出口相连，在催化裂化中用此料腿将固体送回到催化剂床层。
2
Study of coke formation during FCC naphtha cracking was carried on a laboratory fixed-fluidized bed reactor.
在实验室采用固定流化床反应器，研究了催化裂化汽油裂化时的焦炭生成。
3
The performance of oxide catalyst for naphtha cracking was studied in a fixed-fluidized bed reactor.