A kind of solid-liquid separation method of solid-containing oil product

A technology for oil and centrifugal separation, applied in chemical instruments and methods, petroleum industry, preparation of liquid hydrocarbon mixtures, etc., can solve the problems of difficulty in regeneration, insufficient filtering accuracy of filter screen, adverse effects of treatment process, etc., and reduce equipment maintenance. and shutdown times, high solid-liquid separation efficiency, and long-term operation.

Active Publication Date: 2022-01-07
SYNFUELS CHINA TECH CO LTD
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Problems solved by technology

[0006] Patent CN101733045B discloses a solid-liquid separation device for a slurry bed reactor, but the overall separation process is complicated, especially the membrane separation equipment used in the Fischer-Tropsch oil separation application process is very easy to cause blockage, regeneration is difficult, and membrane separation The area is proportional to the catalyst content. When the catalyst content is high, the membrane separation area needs to be larger, and the equipment investment is higher.
Patent CN103846160B discloses a method for separating the heavy product of slurry bed Fischer-Tropsch synthesis from the catalyst. This method uses magnetic separation. The principle of magnetic separation determines that this method can only be applied to iron-based catalysts, and the scope of use is limited.
Patent CN102553343B discloses a method for separating the catalyst and product of liquid fuel in a slurry bed. The method uses multi-layer metal mesh to filter. The filter will cause blockage during use, and the flux will drop significantly. Moreover, the filtration accuracy of the filter Insufficient, the separation is not complete, and the residual catalyst in the oil will cause adverse effects on the subsequent treatment process

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  • A kind of solid-liquid separation method of solid-containing oil product

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Embodiment 1

[0036] The Fischer-Tropsch slag wax (F1, melting point is 93.5 ℃, wherein the catalyst solid slag particle diameter is within the scope of 1 μm-200 μm) with a solid content rate of 10% is used as a separation raw material, and enters a horizontal screw discharge centrifuge (that is, One-stage centrifugal separation system), the feed speed is 0.7m 3 / h, the feed temperature is 170°C, the rotating speed of the horizontal screw discharge centrifuge is 5000rpm, the differential speed is 45rpm, and the centrifugation time is 50s, then the solid residue (W) and the solid residue (W) with a liquid content of 9.6wt% are obtained. Serum at a rate of 0.85 wt%. The supernatant liquid enters the disc centrifuge (i.e., the secondary centrifugal separation system), the feed temperature is 170°C, the rotating speed of the disc centrifuge is 9000rpm, and the centrifugation time is 6s to obtain a solid content rate of 8 μg / g. Clean oil (P) and turbid liquid (H2) with a solid content of 28 wt%...

Embodiment 2

[0038] The slurry of Fischer-Tropsch heavy oil (F1, melting point 38°C, catalyst solid slag particle size within the range of 1 μm-150 μm) with a solid content rate of 350 μg / g (solid content rate 3 / h, the feed temperature is 90°C, the rotating speed of the first-stage disc centrifugal separator is 9000rpm, and the centrifugation time is 8s, and the clear liquid (L1) with a solid content of 7 μg / g and the turbidity with a solid content of 30wt% are obtained. liquid (H1); clear liquid (L1) enters the second-stage disc centrifuge, the feed temperature is 80°C, the speed of the second-stage disc centrifuge is 10000rpm, and the centrifugation time is 10s, the solid content rate is 1.5 μg / g clean product (P) and turbid solution (H2) with a solid content rate of 25wt%. The turbid liquid (H1) and the turbid liquid (H2) are mixed into the horizontal screw discharge centrifuge (that is, the first-stage centrifugal separation system), the feed temperature is 90°C, and the speed of the h...

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Abstract

The invention provides a simple, efficient and continuous solid-liquid separation method for oil products containing solids, which is suitable for the solid-liquid separation of Fischer-Tropsch synthesis slurry bed reactor products and the separation of other oil products containing solids. The method comprises the following steps: (1) making the slurry enter a primary centrifugal separation system for centrifugation to obtain solid residue and clear liquid; (2) putting the clear liquid in step (1) in a secondary centrifugal separation system Centrifugation was carried out to obtain a turbid liquid and a clean product. The method of the invention can effectively solve the problem of separating the catalyst and the oil product in the industrialization of the slurry bed indirect liquefaction synthesis liquid fuel.

Description

technical field [0001] The invention relates to a treatment method for solid-containing oil, in particular, the invention relates to a solid-liquid separation method for solid-containing oil. Background technique [0002] Energy is the source of power for the operation of national industry, economy and society, and the basis for human survival and social development. Indirect coal liquefaction uses coal with abundant reserves in my country as the raw material. The coal is converted into synthesis gas through gasification, purification, water-gas shift and other processes, and then the synthesis gas is converted into clean intermediate oil through the Fischer-Tropsch synthesis process. Fine processing of products to form final products such as clean gasoline, diesel oil, wax and high value-added chemicals. It can be seen that coal liquefaction technology is of great significance to the development of alternative oil production technology. [0003] Most of the current coal-to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G2/00B01J8/00
CPCB01J8/0055C10G2/342
Inventor 陈彪龙爱斌耿春宇张丽高军虎韩哲翔郝栩董根全高琳杨勇李永旺
Owner SYNFUELS CHINA TECH CO LTD
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