会议专题

EXPERIMENTAL RESEARCH ON GAS-SOLID FLOW IN AN EXTERNAL HEAT EXCHANGER WITH DOUBLE OUTLETS

A new type scaling-up scheme of CFB boiler that takes separator as center and furnaces are laid around was put forward in this paper. In the recycle system, a new type heat exchanger device with double outlets was designed for this disposal scheme. As we know, the external heat exchanger is very important for the CFB, which be able no only to adjust the steam temperature, but also to adjust the bed temperature. In this paper, through the adjustment of air speed in different room of the heat exchanger, the adjusting performance of the new type heat exchanger was analyzed. Moreover, the test of the pressure in the whole recycle system was analyzed. The pressure balance system of the circulating circuit with this new arrangement scheme was realized. Through this test research, the main conclusions were got as follows: The external heat exchanger, which has two recycled solid outlets, could run flexibly and stably and could successfully discharge the materials from the standpipe into either of the furnaces. This test device has a good pressure and material balance system.

CFB ezternal heat ezchanger heat transfer coefficient temperature distribution directional flow

H.Z.Liu X.F.Lu

College of Power Engineering of Chongqing University, Chongqing, 400044, China

国际会议

第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)

西安

英文

367-372

2009-05-18(万方平台首次上网日期,不代表论文的发表时间)