From which device and which stream does C4 return to the MTP reactor in MTP?
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This post was last edited by jordan569 on 2013-1-6 21:37. It seems that c5/c6 is a stream taken from the overhead stream of the dehydrogenation tower and sent back. Is C4 the stream that is returned from the bottom of the depropanization tower? Thank you. . Note # ) # # , . hcbbs
Reply 1# ggghhh: In the industrial unit, the C4 component is recycled from the bottom of the depropanization tower :)
Thank you. Does the bottom stream include methanol, DME, and mixed C4? Additionally, what is the volume of circulation (it seems that LPG will still be used for the most part)? Is this volume determined by the amount of ethylene that is recycled? What is the relationship with the amount of C5/C6?
Reply to 3# ggghhh: The component at the bottom of the tower should be the one you mentioned; it’s not quite clear how to determine the exact amount
This post was last edited by yjxnddd on 2011-11-8 at 17:03. In the debutanization process, the light components with a molecular weight above C4 and those of C5+ are separated first; then, the C4- components are separated in the depropanization tower. The heavier C4 components remain at the bottom of the tower, with part of them being used as LPG product while another part is recycled. The amount of material that is recycled depends on the reaction conditions, as it affects the yield of propylene. The specific figures are confidential--------
This cycle starts from the bottom of the depropanization tower, passes through heat exchange before returning to the reactor; the volume of material in this cycle is quite large, at least over 50%
Thank you. Does the C4 mixture used as LPG need to be dried further after water extraction?