Method for filtering Fischer-Tropsch synthesized heavy wax

A technology of Fischer-Tropsch synthesis and filtration method, applied in filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of increasing material consumption, generating waste residue, and consuming large white clay.

Inactive Publication Date: 2010-01-13
中国石油集团工程设计有限责任公司抚顺分公司 +1
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Problems solved by technology

The above-mentioned white clay refining method needs to consume a large amount of white clay, which increases the material consumption, the process is also rela

Method used

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Embodiment Construction

[0015] The method of the invention comprises equipment such as a heavy wax raw material tank, a high gradient filter, a backwash controller, a pump, and the like. The heavy wax at 2.75MPa(A) and 250°C from Fischer-Tropsch synthesis reactor filter separation tank is decompressed to 0.15MPa(A) at 239°C, and then cooled to 160-180°C through the feed cooler to enter the heavy wax Raw material tank, through the gravity separation of the heavy wax raw material tank (the pressure in the heavy wax raw material tank is maintained at about 0.13-0.15MPa (A)), and the released gas is discharged into the Fischer-Tropsch synthesis reactor from the top of the tank. The heavy wax in the tank is sent to the high-gradient magnetic filter through the heavy wax pump. After passing through the filter, the heavy wax of 0.4MPa(A) and 180°C is formed and enters the next device. The iron-based catalyst is adsorbed inside the filter, washed by the backwash controller, and discharged from the high-gradi...

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Abstract

The invention discloses a method for filtering Fischer-Tropsch synthesized heavy wax. The method is as follows: feeding heavy wax extracted from a Fischer-Tropsch synthesized reactor into a high-gradient magnetic filter to adsorb and remove the iron-based catalyst in the heavy wax, and then entering a device of next procedure. The method of the invention adopts the high-gradient magnetic filter to adsorb and remove the iron-based catalyst in the heavy wax, the flow is simple and is convenient for operation, and the material consumption is lower, no waste residue is generated, thereby avoiding the occurrence of secondary pollution. Meanwhile, the filtering result is obvious, which can be up to more than 99. 5%, the device energy consumption is the lowest in the country, thereby being worth promotion and application.

Description

1. Technical field [0001] The invention belongs to the technical field of Fischer-Tropsch synthesis, and in particular relates to a filtration method for Fischer-Tropsch synthesis heavy wax. 2. Background technology [0002] Petroleum is a national strategic material commodity. China is a country rich in coal but poor in oil, and oil resources are scarce, so it imports a large amount of crude oil every year to meet the needs of the country's economic growth. Therefore, finding alternative energy sources is a national strategic issue. The Fischer-Tropsch synthesis process uses coal or natural gas as a raw material to indirectly synthesize liquid fuels. In the Fischer-Tropsch reaction, H 2 and CO to generate hydrocarbon products over the reduced catalyst. During the production process, part of the liquid hydrocarbons are usually extracted from the middle of the Fischer-Tropsch synthesis reactor as heavy wax, and then go to the oil processing device for processing. Before p...

Claims

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Application Information

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IPC IPC(8): B01D37/00B01D35/06C07C7/00
Inventor 李柏杜喜研张晶苏波任泓高诚陈维思温博王红兵王健林丽丽张承臣周建伟
Owner 中国石油集团工程设计有限责任公司抚顺分公司
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