C4 Comprehensive Utilization Project
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Today, when I got home in Shanghai Chuan, I saw many friends leaving messages asking for detailed information about the C4 project. I’ll give a brief overview here: the project consists of a purification, extraction, and separation unit, an isomerization unit, an MTBE unit, a butyl rubber production unit, and an isobutane dehydrogenation unit, among others. In fact, C4 refers to the product obtained from the top of the catalytic cracking stabilizer; it can be considered as a form of third-stage deep processing of petroleum. In the past, most of C4 was burned as fuel, with isobutylene being the most useful component within it. Our technology enables the dehydration of isobutane, a component of C4, to produce isobutylene, and it also allows n-butylene to be converted into isobutylene. This isobutylene is then used as a raw material for MTBE and butyl rubber, thereby enabling further deep processing of C4 and maximizing its value. The combined unit will be completed soon; pressure testing is currently in progress, and some cleaning operations have already been carried out. It will be operational soon after materials are fed in.
Our company dehydrogenates isobutane, one of the components in C4, to produce isobutylene, converts n-butylene into isobutylene, and then uses isobutylene as MTBE
In C4, isobutane, one of its components, is dehydrogenated to produce isobutylene. What technology is used to convert n-butylene into isobutylene, and what are the relevant specifications?
Is coked carbon of grade four useful? The alkane content is over 70, with a ratio of n-butane to isobutane of about 2:1. What should be done with n-butane? Is separation also schizophrenia?
Reply to 1# kanchunlei: Can isobutylene be isomerized into butane?
The C4 process in many refineries is as follows: catalytic liquefaction of gas – desulfurization – gas separation – MTBE – aromatization – export
Our company plans to install a set of Superflex light hydrocarbon cracking units in order to achieve comprehensive utilization of C4, converting it into products such as ethylene, propylene, ethane, propane, and aromatic gasoline. Basically, they exploit it to the fullest.
This post was last edited by Wangyangzhizhou on 2010-7-20 at 21:38. For isobutane dehydrogenation and butene isomerization units in use in China today, technology must be imported. The preparation to start work mentioned by the poster probably does not include isobutane dehydrogenation.
It is said that there is a company in Heze planning to install a fluidized bed pyrolysis unit; it must be the one the original poster is referring to
Our company has also just installed a gas fractionation unit. After reading the moderator’s message, I became very interested. Could you provide more details? In particular, could you explain the technology for converting C4 into propylene?
The disproportionation of butene-2 and ethylene can produce propylene, which is a material used for manufacturing polypropylene