ChatGPT $3\mathrm{.}5$

User

Vinyl chloride monomer $($VCM$),$ which is used to manufacture PVC$,$ can be produced from acetylene

and hydrogen chloride via the following reaction:

C$2$H$2+$ HCl C$2$H$3$Cl

acetylene hydrogen chloride vinyl chloride

A side reaction also occurs, producing dichloroethane $($DCE$)$ as an undesired by$-$product:

C$2$H$3$Cl $+$ HCl C$2$H$4$Cl$2$

vinyl chloride hydrogen chloride dichloroethane

$1\mathrm{.}1$ With reference to specific components in the system, recommend a scheme to minimise the

undesired product $($DCE$).$ Justify your recommendation.

$1\mathrm{.}2$ Draw up a table of the molecular weights and boiling points $($in C$)$ of the components in the system.

List the boiling points from lowest to highest.

$1\mathrm{.}3$ Based on your answers in $1\mathrm{.}1$ and $1\mathrm{.}2,$ develop a preliminary process flow diagram $($PFD$)$ for the

system. Provide your reasoning.

$1\mathrm{.}4$ Plot a graph of the economic potential versus the selectivity.

Hydrogen chloride $0\mathrm{.}35$$$/$kg

Acetylene $0\mathrm{.}8$$$/$kg

Vinyl chloride $0\mathrm{.}85$$$/$kg

Dichloroethane $0$