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, especi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1-6

[0017] Prepare Ni-Pt-W / Al by referring to the method of 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, the prepared Ni-W-Fe / Al is added to the hydrofining reactor 2 O 3 -SiO 2 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated based on metal. The pre-hydrogenation catalyst and the hydrorefining catalyst are reduced for 8 hours in a hydrogen atmosphere at 400°C for activation. After reaching the reaction conditions, the Fischer-Tropsch synthetic oil is sent to the top of the preheating mixer through a metering pump to meet the hydrogen, mixed and preheated to the prehydrogenation reaction temperature by the preheating mixer...

Example Embodiment

[0018] Example 7-12

[0019] Prepare Ni-Pd-Mo / Al with reference to Chinese patent CN1554728 method of preparing catalyst 2 O 3 -Ti0 2 Catalyst (Pd content is 0.5wt%, Ni content is wt6%, Mo content is wt1.5%) 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 into the hydrofining reactor 2 O 3 -TiO 2 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated based on metal. The pre-hydrogenation catalyst is reduced for 8 hours in a hydrogen atmosphere at 400°C for activation; the hydrorefining catalyst is activated at a pressure of 4Mpa, a temperature of 350°C, and a gas-phase space velocity of 400h -1 Under the condition of presulfurization and activation with hydrogen containing 3-5v% hydrogen sulfide for 16 hours. After reaching the reaction conditions,...

Example Embodiment

[0020] Examples 13-18

[0021] Prepare Ni-Pd-Pt / Al by referring to the method of preparing catalyst in Chinese patent CN1597859 2 O 3 Catalyst (the total metal content of Pd and Pt is 0.5wt%, and the content of Ni is 6wt%) and Ni-Mo-W / Al 2 O 3 Catalyst (the total metal content of Ni, Mo and W is 12% by weight), and the prepared Ni-Pd-Pt / Al is added to the pre-hydrogenation reactor 2 O 3 Catalyst, add the prepared Ni-Mo-W / Al into the hydrofining reactor 2 O 3 catalyst. Based on Fischer-Tropsch synthetic oil, the amount of catalyst added is calculated based on metal. The pre-hydrogenation catalyst is reduced for 8 hours in a hydrogen atmosphere at 400°C for activation; the hydrofining catalyst is activated at a pressure of 4Mpa, a temperature of 350°C, and a hydrogen space velocity of 80h -1 Use Fischer-Tropsch synthetic oil containing carbon disulfide (referred to as vulcanized Fischer-Tropsch oil) for 25 hours to obtain the vulcanization catalyst for hydrodeoxygenation under the c...

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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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