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Process for hydrogenating and refining oil from Fischer-Tropsch synthesis

A technology of hydrorefining and Fischer-Tropsch synthesis, applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problems of corrosion equipment, inconvenient processing and utilization of crude products, etc. active effect

Inactive Publication Date: 2006-11-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the synthetic crude oil contains a large amount of olefins and organic oxygen-containing compounds, it is inconvenient for the further processing and utilization of the crude product, especially the acidic oxygen-containing compound, which will seriously corrode the equipment, so it is necessary to adopt an appropriate method to treat the crude product. Hydrosaturation and Hydrodeoxygenation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0017] Prepare Ni-Pt-W / Al with reference to the method for preparing catalyst in Chinese patent CN1554728 2 o 3 -SiO 2 Catalyst (Pt content is 0.5wt%, Ni content is wt6%, W content is wt1.5%) and Ni-W-Fe / Al 2 o 3 -SiO 2 Catalyst (the total metal content of Ni and W is 14% by weight, and the content of Fe is 2% by weight). Add the prepared Ni-Pt-W / Al to the pre-hydrogenation reactor 2 o 3 -SiO 2 Catalyst, add the prepared Ni-W-Fe / Al in the hydrofinishing reactor 2 o 3 -SiO 2 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated as metal. The pre-hydrogenation catalyst and the hydrofinishing catalyst were activated by reducing them in a hydrogen atmosphere at 400°C for 8 hours. After reaching the reaction conditions, the Fischer-Tropsch synthetic oil is sent to the top of the preheating mixer by metering pump to meet the hydrogen gas, mixed by the preheating mixer and preheated to the prehydrogenation reaction temperature, then ...

Embodiment 7-12

[0019] Prepare Ni-Pd-Mo / Al with reference to the method for preparing catalyst in Chinese patent CN1554728 2 o 3 -Ti0 2 Catalyst (the content of Pd is 0.5wt%, the content of Ni is 6%, the content of Mo is 1.5%) and Ni-Mo-Cu / Al 2 o 3 -TiO 2 Catalyst (the total metal content of Ni and W is 13% by weight, and the content of Cu is 2% by weight). Add the prepared Ni-Pd-Mo / Al to the pre-hydrogenation reactor 2 o 3 -TiO 2 Catalyst, add the prepared Ni-Mo-Cu / Al in the hydrofinishing reactor 2 o 3 -TiO 2 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated as metal. The pre-hydrogenation catalyst is activated by reducing it in a hydrogen atmosphere at 400°C for 8 hours; the hydrogenation refining catalyst is activated at a pressure of 4Mpa, a temperature of 350°C, and a gas phase space velocity of 400h -1 Presulfidation activation with hydrogen containing 3-5v% hydrogen sulfide under certain conditions for 16 hours. After reaching th...

Embodiment 13-18

[0021] Prepare Ni-Pd-Pt / Al with reference to the method for preparing catalyst in Chinese patent CN1597859 2 o 3 Catalyst (total metal content of Pd and Pt is 0.5wt%, Ni content is 6wt%) and Ni-Mo-W / Al 2 o 3 Catalyst (the total metal content of Ni, Mo and W is wt12%), add the prepared Ni-Pd-Pt / Al in the pre-hydrogenation reactor 2 o 3 Catalyst, add the prepared Ni-Mo-W / Al in the hydrofinishing reactor 2 o 3 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated as metal. The pre-hydrogenation catalyst is activated by reducing it in a hydrogen atmosphere at 400°C for 8 hours; the hydrogenation refining catalyst is activated at a pressure of 4Mpa, a temperature of 350°C, and a hydrogen space velocity of 80h -1 Under the condition of using Fischer-Tropsch synthetic oil containing carbon disulfide (referred to as sulfurized Fischer-Tropsch oil) for presulfurization and activation for 25 hours to obtain the sulfurized catalyst for hydrod...

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PUM

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Abstract

The invention discloses a hydrogenation refined technology of feituo synthesized oil, which comprises the following steps: preheating the feituo synthesized oil and hydrogen in the blender; loading the mixture in the pre-hydrogenation reactor to proceed olefin saturation; proceeding hydrogenation and deoxidation in the hydrogenation refined reactor with hydrogenation refined catalyst; putting the hydrogenated refined product in the cool high pressure separator to separate gas phase (hydrogen-rich gas) and liquid phase; adding the liquid product in the low pressure oil water separator to separate water and tail gas to produce the product; circulating the hydrogen-rich gas in the reactor through purifying; cutting the product into petrol fraction and diesel fraction. The invention possesses higher olefin saturated rate and hydrogenation dioxide rate, which lengthens the lifetime of catalyst.

Description

technical field [0001] The invention relates to a process for the hydrofining of Fischer-Tropsch synthetic oil, specifically, two fixed-bed reactors are connected in series to carry out pre-hydrogenation and hydrofining respectively to refine the Fischer-Tropsch synthetic oil into high-quality finished products Fuel oil process. Background technique [0002] Fischer-Tropsch synthetic oil is mainly composed of linear alkanes, olefins and oxygenated compounds, and is an environmentally friendly fuel oil and chemicals. However, since the synthetic crude oil contains a large amount of olefins and organic oxygen-containing compounds, it is inconvenient for the further processing and utilization of the crude product, especially the acidic oxygen-containing compound, which will seriously corrode the equipment, so it is necessary to use an appropriate method to treat the crude product. Hydrosaturation and hydrodeoxygenation. [0003] As far as the oil hydrogenation process is conc...

Claims

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Application Information

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IPC IPC(8): C10G65/06
Inventor 任杰李永旺侯瀟云王雪峰卢银花
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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