Figure 2 shows a monochlorobenzene separation process. The process involves a flash vessel, V-100; an absorption column, T-100; a distillation column, T-101; a reflux drum, V-101; and three utility heat exchangers. As shown, most of the HCl is removed at high purity in the vapor effluent of T-100. Residual HCl is purged in a small vapor overhead product stream in T-101. The benzene and monochlorobenzene are obtained at high purity as distillate and bottoms liquid products in T-101. Note that the 12 available control valves are identified. Your task is to design a conceptual control system to ensure that the process provides stable production at a desired level while meeting quality specifications