Novick, Kim & Lee, PLLC
Ethylene cracking furnace
The present disclosure provides an ethylene cracking furnace, comprising at least one radiant section provided with a bottom burner and/or a side burner, and at least one set of radiant coil arranged along a longitudinal direction of the radiant section. The radiant coil is an at least two-pass coil having an N−1 structure, wherein N is preferably a natural number from 2 to 8. A manifold is arranged at an inlet end of a downstream tube of said at least two-pass coil, and an outlet end of each upstream tube of said at least two-pass coil is connected to the manifold through a curved connector. The arrangement according to the present disclosure can effectively reduce the expansion differences between the upstream tubes and the downstream tubes, and therefore reduce the stress caused thereby. Consequently, bending of the radiant coil can be avoided, thereby extending the service life of the radiant coil.
SINOPEC ENGINEERING INCORPORATION CHINA PETROLEUM & CHEMICAL CORPORATION
F C B B F B B F B C C
F28D C10G B01J B01J F28F B01J B01J F28D B01J C07C C07C
inventional inventional inventional inventional additional additional additional additional additional inventional inventional
Yuping Jingkun Hainu Changli Xiou Chen
Guo Liu Shen Li He Shao