Coal-based oil distillation method using thermal condensation inhibited oil
A distillation method and a technology for inhibiting oil are applied in the field of coal-based oil distillation and can solve problems such as unreported
Inactive Publication Date: 2012-07-11
何巨堂
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[0013] Method of the present invention has no report
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[0057] Coal tar heavy oil is produced in the process of coal-to-natural gas with the properties shown in Table 2. The conventional coal-based heavy oil fractionation process is used to separate the components in the coal tar heavy oil with a conventional boiling point lower than 456°C from the heavy oil at the bottom of the vacuum tower. The extraction rate is ~ 80%. The fractionation tower feed heating furnace is set up, the outlet temperature of the heating furnace is set at 350°C as the upper limit, the pressure of the decompression tower is 0.0013MPa, and stripping steam is used at the bottom of the tower.
[0058] Adopt the present invention, set two-step method fractionation, the first step, coal tar heavy oil is separated into the cut A that conventional boiling point is lower than 354 ℃ and the cut B that conventional boiling point is higher than 354 ℃ through decompression tower 1; Second step, Coal tar hydrorefined oil with a conventional boiling point of 330-470°C i...
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The invention relates to a coal-based oil distillation method using thermal condensation inhibited oil. compound oil F2 of oil logistics F12 from coal-based oil and formed by hydrocarbon with a conventional boiling point higher than 450 DEG C and thermal condensation inhibited oil YJ, and is separated into oil logistics F21 formed by hydrocarbon with a conventional boiling point lower than 520 DEG C and oil logistics F22 formed by hydrocarbon with a conventional boiling point higher than 520 DEG C in a pressure-reduction fractionating column T2 after being heated by a heating furnace, and the fractionating column T2 is operated under a pressure reduction condition. When carbon residue of heavy oil of coal tar is low, the oil logistics F21 is used as a hydrogenation raw material, the thermal condensation inhibited oil serves as a dispersing agent of a coal heavy oil component, a heating medium and a coking inhibitor during heating and the like, and has the effects of inhibiting furnace tube coking of the heating furnace, prolonging the operating cycle, improving the operating temperature of the heating furnace and improving the operation of the fractionating column. In the method of the invention, the hydrogenation material is separated out from the coal heavy oil, the load during heat processing is reduced, and the total liquid yield during coal tar lightening is improved.
Description
technical field [0001] The present invention relates to a kind of coal-based oil distillation method using thermal condensation inhibiting oil; in particular, the present invention relates to a vacuum distillation method of coal tar heavy oil deep drawing hydrogenation raw material using thermal condensation inhibiting oil; more particularly this The invention relates to a combined process for conversion of full-fraction coal tar. The light fraction and heavy fraction obtained by the vacuum distillation method of coal tar heavy oil using heat-condensation inhibited oil enter the hydrorefining process HT and the thermal processing process RJG (such as coking process or suspension Bed hydrocracking process), the thermal processing process RJG mainly has the product fraction with a conventional boiling point lower than 450 °C entering the hydrorefining process HT, and the thermal condensation inhibited oil is mainly obtained from the conventional boiling point of the hydrorefining...
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Inventor 何巨堂
Owner 何巨堂