Heavy oil viscosity breaking method based on super-critical benzene and application thereof
A visbreaking and supercritical technology, applied in the petroleum industry, refining hydrocarbon oil, etc., which can solve the problems of low visbreaking efficiency, rising, quenching of alkyl carbon radicals, etc.
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Embodiment 1
[0039] Visbreaking in supercritical benzene environment:
[0040] Add 10 g of raw material heavy oil (properties as shown in Table 1) and 30 g of benzene into a high-pressure reactor with a capacity of 100 mL. The feeding conditions correspond to a benzene-oil ratio of 3:1 and a supercritical benzene density of 0.30 g / cm 3 ;
[0041] With high purity N 2 After purging for 10 minutes, the closed reactor was heated from room temperature at a rate of 15°C / min, and the stirring rate was maintained at 700rpm during the process;
[0042] Start timing after reaching the specified temperature of 360°C;
[0043] After completing the predetermined time reaction, the cracking is terminated by air-cooling the reactor body.
[0044] N 2 Traditional visbreaking control experiments in ambient conditions:
[0045] Add 30g of raw material oil in a high-pressure reactor with a capacity of 100mL;
[0046] After high-purity N 2 Filled with 8.0-9.0MPa high-purity N after purging 2 ;
[0047...
Embodiment 2
[0061] Visbreaking of heavy oil in supercritical benzene environment:
[0062] Add 8.8g of feedstock oil and 35g of benzene to a 100mL autoclave, corresponding to a benzene-oil ratio of 4:1 and a supercritical benzene density of 0.35g / cm 3 ;
[0063] With high purity N 2 After purging for 10 minutes, the closed reactor was heated from room temperature at a rate of 15°C / min, and the stirring rate was maintained at 700rpm during the process;
[0064] After reaching the specified temperature of 400°C, the cracking is terminated by air-cooling the reactor body.
[0065] N 2 Traditional visbreaking control experiments in ambient conditions:
[0066] Add 30g of raw material oil in a high-pressure reactor with a capacity of 100mL;
[0067] After high-purity N 2 Filled with 8.0-9.0MPa high-purity N after purging 2 ;
[0068] The closed reactor starts heating at a rate of 15°C / min from normal temperature, and the stirring rate is kept at 700rpm during the process;
[0069] Sta...
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