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What aspects of DuPont alkylation can be further optimized?

2018-08-21View Original

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The following are purely my personal collections and opinions; everyone is welcome to discuss and explore them together: 1. How to handle the recovery of acid hydrocarbons? ? ----Can it be heated or left alone? ? 2. Can the n-butane removal tower be left unused? -------Use the self-pressurized tank transfer area? 3. Remove the effluent through acid-base washing? ---------Add a coalescer?
Reply #22018-08-22
This post was last edited by Someone on 2018-8-22 22:27. 1. What is acid hydrocarbon recovery? Acid-soluble oil? There’s basically no way to recover acid-soluble oil; otherwise, the waste acid wouldn’t be burned. 2. It is not possible to use the normal butane self-pressure transfer tank area, as it is in gaseous form; at the very least, a compressor is needed to compress it into a liquid state, which consumes energy and also results in losses of alkylation oil. 3. Since there are acid-soluble oils, aren’t there any “oil-soluble acids”? It’s dissolved; it’s homogeneous. Adding a coalescer won’t work either, right? I’m not in the industrial sector; this is merely my personal understanding based on principles and processes, so please forgive any imperfections.
Reply #32018-09-01
1. How to handle the recovery of acidic hydrocarbons? ? ----Can it be heated or left alone? ? Add a waste acid degassing tank, with a higher separation section at the top of the tank; since the densities of acid and hydrocarbons are generally different, this allows for relatively clean separation. 2. Can the n-butane removal tower be left unused? -------Use the self-pressurized tank transfer area? The n-butane tower must be in operation; without it, it is not possible to separate isooctane from n-butane. The pump used to transfer isooctane from the bottom of the tower can be determined based on factors such as the distance to the storage tanks and pipeline pressure losses. We have not used option 3: removing the acidic or alkaline wash water from the effluent ---------Add a coalescer? The most cost-effective approach is to install a coalescer inside the tank to separate trace amounts of acid, alkali, and water

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