Study on Autogenous Heat Technology of Offshore Oilfield: Experiment Research, Process Design, and Application

Table 5

The effect of catalyst types on heat generation rate and thermal peak.

Catalyst: 1% benzoic acid		Catalyst: 1.0% HCl		Catalyst: 1.0% phosphoric acid		Catalyst: 1.0% MX
Time (min)	Temperature (°C)	Time (min)	Temperature (°C)	Time (min)	Temperature (°C)	Time (min)	Temperature (°C)
0	25 (indoor)	0	25 (indoor)	0	25 (indoor)	0	25 (indoor)
5	28	5	29	5	34	5	28
10	29	10	32	10	41	10	31
15	31	15	37	15	45	15	35
20	34	20	40	20	50	20	38
25	36	25	42	25	52	25	41
30	38	30	46	30	52	30	45
35	39	35	48	35	51	35	49
40	41	40	52	40	50	40	52
45	42	45	52	45	49	45	53
50	44	50	50	50	49	50	55
55	45	55	49	55	48	55	57
60	45	60	49	60	47	60	55
65	44	65	48	65	47	65	54
70	43	70	48	70	46	70	52
75	43	75	47	75	45	75	51

Concentration of system: 100 mL 2.0 mol/L NaNO₂ solution+100 mL 2.0 mol/L NH₄Cl solution.