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Production process for producing commercial hexanes by utilizing Fischer-Tropsch (FT) synthesis oil

A technology for production industry and production process, which is applied in the field of industrial hexane production process, can solve the problems of impact and high cost, and achieve the effect of abundant raw material sources, simple and convenient use, and easy control of parameters

Active Publication Date: 2013-07-24
洛阳金达石化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the prior art that the production of industrial hexane refining units is greatly affected by crude oil components and the cost is high, the present invention provides a process for producing industrial hexane using FT synthetic oil

Method used

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  • Production process for producing commercial hexanes by utilizing Fischer-Tropsch (FT) synthesis oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: if figure 1 As shown, FT synthetic oil 7 passes through heat exchanger A 8 and heat exchanger B 11 for two-stage heat exchange. Circulation is established at the bottom and top of the fractionation tower respectively. The circulation at the bottom of the tower provides heat source reboiler 14, the temperature at the bottom of the tower is controlled at 120°C, and the circulation at the top of the tower is used to obtain heat. separate.

[0017] Part of the FT synthetic oil separated by gas stripping in the fractionation tower 1 is collected by the top reflux tank 5 and returned to the tower to establish a cycle, and part of it is taken out of the device as the product top light oil 6 . The industrial hexane 10 produced in the middle section of the fractionation tower exchanges heat with the raw material and then exits the device as industrial hexane and enters the tank farm. The bottom of the fractionation tower produces heavy oil at the bottom 13 out...

Embodiment 2

[0019] Embodiment two: if figure 1 As shown, FT synthetic oil 7 passes through heat exchanger A 8 and heat exchanger B 11 for two-stage heat exchange. Circulation is established at the bottom and top of the fractionation tower respectively. The circulation at the bottom of the tower provides heat source reboiler 14, the temperature at the bottom of the tower is controlled at 140°C, and the circulation at the top of the tower is used to obtain heat. separate.

[0020] Part of the FT synthetic oil separated by gas stripping in the fractionation tower 1 is collected by the top reflux tank 5 and returned to the tower to establish a cycle, and part of it is taken out of the device as the product top light oil 6 . The industrial hexane 10 produced in the middle section of the fractionation tower exchanges heat with the raw material and then exits the device as industrial hexane and enters the tank farm. The bottom of the fractionation tower produces heavy oil at the bottom 13 out...

Embodiment 3

[0022] Embodiment three: as figure 1 As shown, FT synthetic oil 7 passes through heat exchanger A 8 and heat exchanger B 11 for two-stage heat exchange. The bottom and the top of the fractionation tower respectively establish circulation, the bottom circulation provides the heat source reboiler 14, the temperature at the bottom of the tower is controlled at 160°C, the top of the tower is circulated for heat extraction, the temperature at the top of the tower is controlled at 70°C, and the pressure of the tower is controlled at 75KPa. separate.

[0023] Part of the FT synthetic oil separated by gas stripping in the fractionation tower 1 is collected by the top reflux tank 5 and returned to the tower to establish a cycle, and part of it is taken out of the device as the product top light oil 6 . The industrial hexane 10 produced in the middle section of the fractionation tower exchanges heat with the raw material and then exits the device as industrial hexane and enters the ta...

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Abstract

The invention relates to a production process for producing commercial hexanes by utilizing Fischer-Tropsch (FT) synthesis oil. The production process comprises the following steps of adopting the FT synthesis oil as a production raw material, and separating the FT synthesis oil in a fractionating tower to produce the commercial hexanes under the condition that the reaction temperature on the bottom of the fractionating tower is 120 DEG C to 160 DEG C, the reaction temperature on the top of the fractionating tower is 30 DEG C to 70 DEG C and the tower pressure is 50 to 100 KPa. The FT synthesis oil with clean and quality compositions is used for producing the commercial hexanes, so that the aromatic sulfide content of the produced commercial hexanes is very low, the hydrogen consumption in the subsequent processing step is low, and the economic benefit is improved. In addition, a conventional fractionating tower is adopted, so that simplicity and convenience in use can be realized, the parameters are easy to control, and the raw materials are popular in the market and easy to purchase.

Description

technical field [0001] The invention relates to a process for producing industrial hexane, in particular to a process for producing industrial hexane with FT synthetic oil. Background technique [0002] Using industrial hexane as raw material for deep processing, its products are widely used as solvents for the polymerization of olefins such as propylene, extractants for edible vegetable oils, solvents for rubber and paints, and thinners for pigments. At present, industrial hexane mainly comes from oil refining units, and its output is greatly affected by crude oil components, and its cost is relatively high. The FT synthetic oil has a clean and high-quality composition, and the industrial hexanethioaromatic content it produces is extremely low, and the post-processing consumes less hydrogen, which improves economic benefits. The invention uses FT synthetic oil as raw material for processing, and extracts industrial hexane components to meet the production and processing ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G7/00C07C9/15C07C7/04
Inventor 王进才牛同治赵华王银盘孟立张红涛曹勇韩明李柯柴丽娜刘明洪赵雷韩婵李建伟
Owner 洛阳金达石化有限责任公司