Fractionating method for separating liquid hydrocarbon mixture

A technology for liquid hydrocarbons and mixtures, which is applied in the field of fractional distillation for separating mixtures, can solve problems such as less investment, and achieve the effects of less investment, less equipment and high safety.

Inactive Publication Date: 2005-02-23
CHINA HUANQIU CONTRACTING & ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result is higher product quality with minimal investment, thereby solving more expensive problems in the separation of liquid hydrocarbon mixtures at a lower cost

Method used

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  • Fractionating method for separating liquid hydrocarbon mixture
  • Fractionating method for separating liquid hydrocarbon mixture
  • Fractionating method for separating liquid hydrocarbon mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The fractionation method of the present invention is used in a company's 200,000 tons / year (23.8 tons / hour) liquefied gas separation device to produce polymer grade propylene (ie, industrial propylene) products.

[0042] The raw material is propylene-rich liquefied gas, and its specification (dry basis) is shown in the table below:

[0043] Component Molecular formula mol%

[0044] Vinyl C 2 h 4 0.61

[0045] Ethane C 2 h 6 1.12

[0046] Propylene C 3 h 6 38.70

[0047] Propane C 3 h 8 12.21

[0048] Butene C4 h 8 -1 5.83

[0049] Isobutylene i-C 4 h 8 8.00

[0050] Trans-butene t-2-C 4 h 8 5.22

[0051] Butene c-2-C 4 h 8 6.92

[0052] Isobutane i-C 4 h 10 17.00

[0053] n-Butane n-C 4 h 10 4.02

[0054] Isopentane i-C 5 h ...

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Abstract

The invention is a fractionation method to separate hydrocarbon compound in liquid state. It contains light hydrocarbon removing and heavy hydrocarbon removing processes, and fractionation by using light hydrocarbon separating tower and heavy hydrocarbon separating tower. And separate the liquid-state hydrocarbon compound from lightness to heaviness. The invention has a host of advantages involving high production quality, low cost, high security, wide range of application, and low cost of operation and source consumption.

Description

technical field [0001] The invention relates to a fractionation method for separating mixtures, in particular to a fractionation method for separating liquid hydrocarbon mixtures. Background technique [0002] Liquid hydrocarbon mixtures (such as: petroleum liquefied gas LPG) usually contain ethane, ethylene, propane, propylene and other alkanes, olefins, etc., to recover propylene, propane, butane or other single components from the liquid hydrocarbon mixture, The problem to be solved is how to separate target components (such as: propylene) from light components (such as: ethane, ethylene) and heavy components (such as: propane, other alkanes and olefins, etc.). [0003] The principle of the liquid hydrocarbon mixture fractionation method is to use the characteristics of different boiling points and temperatures of various hydrocarbon components under a certain pressure, and to achieve the purpose of separating liquid hydrocarbon mixtures by controlling the separation pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02
Inventor 黄文王红赵立全罗自坚武登忠孙竑杨军刘胜学
Owner CHINA HUANQIU CONTRACTING & ENG CO LTD
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