Design and Control of Glycerol-tert-Butyl Alcohol Etherification Process

Table 5

Economic evaluation.

Reactor			Column C1	Column C2	Column C3	Column EX	Column C4
Diameter (m)	0.35	Reflux ratio	0.32	1.83	4	1.5	2
		Diameter (m)	0.85	0.55	0.7	0.5	0.55
		No of trays	6	15	41	30	7
Height (m)	2	Reboiler duty (kW)	343	170	716.2	525	563.3
		Condenser duty (kW)	348.7	168.6	654	170	324.4
Cost ($)	9296	Cost ($)	297 966	221 775	589 424	759 704	338 157
Energy Cost = 291 663$/year
Equipment Cost = 2 440 746$
TAC = 535 738$/year (10 years payback)