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Method for acquiring isoparaffin from long-carbon-chain mixed n-alkanes and isoparaffin

A technology for isoparaffins and n-paraffins, applied in the field of high-purity long-carbon chain isoparaffins, can solve problems such as unsatisfactory effects, and achieve the effects of remarkable adsorption effect, low cost and large saturated adsorption capacity

Active Publication Date: 2017-05-10
NANJING KANG XIN CHENG BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Purpose of the invention Aiming at the unsatisfactory shortcomings of the adsorption separation method in the prior art to the effect of separating normal alkanes with more than 14 carbon atoms, the purpose of the present invention is to provide a kind of long carbon containing 8 to 22 carbon atoms from complex Method for obtaining high-purity isoparaffins from chain normal isomeric mixed alkanes

Method used

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  • Method for acquiring isoparaffin from long-carbon-chain mixed n-alkanes and isoparaffin
  • Method for acquiring isoparaffin from long-carbon-chain mixed n-alkanes and isoparaffin
  • Method for acquiring isoparaffin from long-carbon-chain mixed n-alkanes and isoparaffin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Composition of raw material solution I

[0027] From the composition (table 1) of raw material liquid I, it can be seen that the mass content of normal paraffins with 8 to 22 carbon atoms is 15%, and the mass content of isoparaffins with 8 to 22 carbon atoms is 85%. %.

[0028] Table 1

[0029]

[0030] (2) Adsorption and separation process

[0031] The 100ml adsorption bed is divided into 3 adsorption separation zones, based on the volume of the adsorption bed, the volume percentages of the first adsorption separation zone, the second adsorption separation zone and the third adsorption separation zone are 5% and 80% respectively and 15%, first load 15ml of 13X molecular sieve in the third adsorption separation zone, then load 80ml of HY molecular sieve in the second adsorption separation zone, and finally load 5ml of 5A molecular sieve in the first adsorption separation zone.

[0032] After filling, when the adsorption temperature is 100°C, the pressure is 3M...

Embodiment 2

[0036] (1) Composition of raw material liquid II

[0037] From the composition (table 2) of raw material liquid II, it can be seen that the mass content of normal paraffins with 8 to 22 carbon atoms is 5%, and the mass content of isoparaffins with 8 to 22 carbon atoms is 95%. %.

[0038] Table 2

[0039]

[0040] (2) Adsorption and separation process

[0041] The 100ml adsorption bed is divided into 3 adsorption separation zones. Based on the volume of the adsorption bed, the volume percentages of the first adsorption separation zone, the second adsorption separation zone and the third adsorption separation zone are 25% and 50% respectively and 25%, first load 25ml of 13X molecular sieve in the third adsorption separation zone, then load 50ml of HY molecular sieve in the second adsorption separation zone, and finally load 25ml of 5A molecular sieve in the first adsorption separation zone.

[0042] After filling, when the adsorption temperature is 30°C, the pressure is no...

Embodiment 3

[0046] (1) Composition of raw material liquid III

[0047] From the composition (table 3) of raw material liquid III, it can be seen that the mass content of normal paraffins with 8 to 22 carbon atoms is 11%, and the mass content of isoparaffins with 8 to 22 carbon atoms is 89%. %.

[0048] table 3

[0049]

[0050]

[0051] (2) Adsorption and separation process

[0052] Divide the 100ml adsorption bed into 3 adsorption separation zones. Based on the volume of the adsorption bed, the volume percentages of the first adsorption separation zone, the second adsorption separation zone and the third adsorption separation zone are 10% and 70% respectively and 20%, first load 20ml of 13X molecular sieve in the third adsorption separation zone, then load 70ml of HY molecular sieve in the second adsorption separation zone, and finally load 10ml of 5A molecular sieve in the first adsorption separation zone.

[0053] After filling, when the adsorption temperature is 50°C, the pre...

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Abstract

The invention discloses a method for acquiring isoparaffin from long-carbon-chain mixed n-alkanes and isoparaffin. The method includes steps of absorbing and separating raw materials to be separated through a first absorption separation zone, a second absorption separation zone and a third absorption separation zone, and acquiring isoparaffin, wherein the raw material to be separated is a mixed liquid of n-alkanes and isoparaffin containing 8-22 carbon atoms; the carbon atom intercepted by the first absorption separation zone is 8-14 n-alkanes, the carbon atom intercepted by the second absorption separation zone is 15-18 n-alkanes, and the carbon atom intercepted by the third absorption separation zone is 19-22 n-alkanes. The method has significant absorbing effect, and can completely absorb the of n-alkanes from the complex long-carbon-chain mixed n-alkanes and isoparaffin containing 8-22 carbon atoms, and acquire high-purity isoparaffin; besides, the method is low in cost of absorbing process and easy to realize the industrial production.

Description

technical field [0001] The invention belongs to the technical field of adsorption separation, and more specifically relates to a method for absorbing and separating normal alkanes from a C8-C22 long carbon chain normal isoparaffin mixture to obtain high-purity long carbon chain isoparaffins. Background technique [0002] Solvent oil is one of the main separation products of petroleum. It is an important organic chemical raw material and basic oil for industrial production. It is closely related to people's daily life and has a wide range of applications, involving machinery, metallurgy, electronics, chemical industry, medicine, and agriculture. , forestry, textiles and other industries in the national economy. With the international community's emphasis on environmental protection and human health, it is the future development direction to develop various special-purpose solvent oils with environmental protection performance. Among them, isoparaffin-based paraffin solvent o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/12C07C9/16C07C9/22
CPCC07C7/12C07C9/16C07C9/22
Inventor 王耀王继元
Owner NANJING KANG XIN CHENG BIOLOGICAL TECH CO LTD
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