Nonsteady-state mathematical modelling of H2SO4-catalysed alkylation of isobutane with alkenes | Oil & Gas Science and Technology

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Table 1

Compositions of the butane–butylene fraction, circulating isobutane and isobutane coolant.

Component concentration, wt.%	Days
Component concentration, wt.%	1	2	3	4	5	6	7	8	9	10
Composition of butane–butylene fraction
Butadiene-1,3	0.30	0.27	0.26	0.26	0.20	0.25	0.25	0.25	0.25	0.26
Butylene	15.81	15.87	15.72	15.66	15.60	15.55	15.49	15.38	15.14	15.57
Isobutane	43.57	44.76	45.07	44.84	45.12	44.99	46.31	48.71	43.39	43.97
Iso-butylene	5.78	5.12	5.31	5.15	5.13	4.97	3.68	7.11	8.09	6.34
n-Butane	8.46	8.32	8.21	8.35	8.29	8.32	8.42	7.36	8.15	8.34
Trans-butylene	16.13	15.96	15.82	15.95	15.88	15.99	15.98	13.53	15.42	15.84
Cis-butylene	9.96	9.70	9.61	9.80	9.77	9.94	9.87	7.65	9.55	9.67
Composition of circulating isobutane
Isobutane	84.66	86.47	87.17	86.96	85.43	86.60	87.80	86.48	85.63	84.20
n-Butane	12.11	10.46	9.89	9.91	10.99	10.31	9.30	9.88	10.74	11.53
Propane	2.92	2.85	2.72	2.90	3.38	2.93	2.77	3.34	3.28	3.72
∑C₅	0.31	0.22	0.22	0.23	0.20	0.16	0.13	0.30	0.35	0.55
Composition of isobutane-coolant
Isobutane	79.04	82.33	82.28	79.99	82.45	80.85	82.25	80.93	79.82	80.61
n-Butane	11.01	9.73	9.56	10.21	9.54	10.13	9.35	9.18	9.92	10.08
Propane	8.40	7.25	7.47	8.41	7.43	8.35	7.89	8.51	9.34	8.50
∑C₅	1.55	0.69	0.69	0.75	0.58	0.67	0.51	0.73	0.92	0.81
∑C₆₊	0.00	0.00	0.00	0.64	0.00	0.00	0.00	0.65	0.00	0.00

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