Energy-saving technique for producing high-purity pentane and pentane foaming agent

A technology of high-purity pentane and process, which is applied in the field of production of high-purity pentane and pentane blowing agent, can solve the problems of high production energy consumption, and achieve the effects of cost reduction, high purity and high product purity

Inactive Publication Date: 2007-02-28
天津天大天海化工新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the deficiency of the high production energy consumption of the prior art, provide a kind of by-product cracking carbon five in the ethylene plant after hydrogenation, refinery, oil field and natural gas recovery carbon

Method used

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  • Energy-saving technique for producing high-purity pentane and pentane foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] Component

[0027] The temperature of the feed S1 is normal temperature, pressurized to 0.55MPa, preheated by preheater 1 to 80.0℃, and then enters the middle of the light removal tower 2, where the C4 component S2 is removed from the top of the tower, and the inside of the light removal tower is plate wave type Structured packing and two-stage trough-type distributor, the operating pressure is 0.55MPa, the temperature at the top of the tower is 55℃, and the temperature at the bottom of the tower is 97℃, the bottom product S3 enters the isopentane tower 3; inside the isopentane tower is Wire mesh type structured packing and secondary trough type distributor, operating pressure is 0.25MPa, tower top temperature is 57℃, tower bottom temperature is 73℃, the top of the tower is equipped with a light component enrichment section, the top of the tower is enriched The light component S4 is returned to the raw material tank, the isopentane product S5 w...

Example Embodiment

[0028] Example 2:

[0029]The raw materials are the same as in Example 1. The temperature of feed S1 is normal temperature, pressurized to 1.0MPa, preheated to 100℃ by preheater 1, and then enters the middle of light removal tower 2, where C4 component S2 is removed from the top of the tower, light removal tower Inside is a plate wave type structured packing and a secondary trough type distributor, the operating pressure is 0.85MPa, the top temperature is 77℃, the bottom temperature is 118℃, the bottom product S3 enters the isopentane tower 3; The alkane tower is equipped with wire mesh structured packing and a secondary trough type distributor. The operating pressure is 0.45MPa, the top temperature is 79℃, and the bottom temperature is 94℃. The top of the tower is equipped with a light component enrichment section. , The light component S4 enriched at the top of the tower is returned to the raw material tank, the isopentane product S5 with a purity of ≥99.0% (w / w, the same below)...

Example Embodiment

[0030] Example 3:

[0031] Component

[0032] The temperature of raw material S1 is normal temperature, pressurized to 0.55MPa, preheated to 98.0℃ by preheater 1, and then enters the middle of light removal tower 2, where C4 component S2 is removed from the top of the tower, and the light removal tower is filled with plate corrugated structured packing And the secondary trough type distributor, the operating pressure is 0.6MPa, the top temperature is 61.3℃, and the bottom temperature is 104.4℃, the bottom product S3 enters the isopentane tower 3; the inside of the isopentane tower is a wire mesh Type structured packing and secondary trough type distributor, operating pressure is 0.25MPa, tower top temperature is 56.2℃, tower bottom temperature is 73.8℃, the top of the tower is equipped with a light component enrichment section, and the light component is enriched at the top of the tower. The component S4 is returned to the raw material tank, and the isopentane S5 product...

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Abstract

The invention discloses a saving technology of high-purity pantane and pantane foaming agent, which is characterized by the following: adopting topped crude or any one of other source materials or random proportional compounds as raw material; heating; pressurizing; connecting dehydrogenizing tower 2, isopentane tower 3, composite pantane tower 4, n-pentane tower 5 and cyclopentene 6 sequently; distilling; obtaining composite pantane as pantane foaming agent.

Description

technical field [0001] The invention relates to the production of high-purity pentane and pentane by utilizing the by-product cracking carbon five in the petroleum hydrocarbon cracking ethylene plant, the carbon five recovered from oil refineries, oil fields and natural gas, the top oil of the reforming unit and other sources of carbon five Alkanes blowing agent process. Background technique [0002] The growth of pentane consumption is directly related to the prohibition of Freon. According to the "Montreal Protocol" adopted by various countries in 1992, countries are required to stop using Freon, an ozone-depleting substance, in 2000. As the final substitute product, pentane has great potential for development in the next few years . The pentane blowing agent is a single component of isopentane, n-pentane and cyclopentane and a mixture of isopentane, n-pentane or isopentane and cyclopentane in different proportions. At present, domestic pent...

Claims

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Application Information

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IPC IPC(8): C07C11/10C07C7/04
Inventor 李崇王芳苗向阳张大治李雪张力擎张曾刘锋
Owner 天津天大天海化工新技术有限公司
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