Preparation method of iso-paraffin composition

A technology of isoparaffin and composition, which is applied in the field of preparation of isoparaffin composition, can solve problems such as low carbon number of naphtha, influence on quality of isoparaffin composition, quality of solvent oil, etc., and achieve good biodegradability , Facilitate adsorption and separation, and improve the quality of the effect

Inactive Publication Date: 2020-07-31
内蒙古伊泰宁能精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN107400535A discloses a method for producing isoparaffin solvent oil and isoparaffin solvent oil from Fischer-Tropsch synthetic naphtha. Using Fischer-Tropsch synthetic naphtha as raw material, the Fischer-Tropsch synthetic naphtha is sequentially subjected to alcohol halogenation Reaction, polymerization reaction and hydrogenation reaction, to solve the problem of how to process Fischer-Tropsch synthetic naphtha to obtain isoparaffin solvent oil with high isoparaffin content, because the selected raw materials contain more olefins, organic oxygen-containing compounds and alcohols Fischer-Tropsch synthetic naphtha, the finally obtained isoparaffin solvent oil will inevitably contain more of the above-mentioned impurities, and the naphtha has less carbon number, so it is impossible to obtain a product with a high flash point and a low freezing point, which affects the quality of the solvent oil. quality
[0005] Chinese patent CN103387848A discloses the production of solvent oil, lubricating oil base oil and heavy wax from Fischer-Tropsch synthetic wax. isoparaffin spirit
[0009] In the prior art, the raw material used is Fischer-Tropsch naphtha or heavy wax, and the process of hydroisomerization and multi-step rectification is used to prepare isoparaffin solvent oil, and the obtained product still contains olefins, organic oxygen compounds, alcohols, etc. , naphthenes and other impurities, or the inability to obtain isoparaffins with high purity, high flash point and low freezing point, which affects the quality of isoparaffin composition

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  • Preparation method of iso-paraffin composition

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Experimental program
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Effect test

Embodiment 1

[0045] The first Fischer-Tropsch crude liquid wax, the second Fischer-Tropsch crude liquid wax, the third Fischer-Tropsch crude liquid wax and the fourth Fischer-Tropsch synthesis process of the 1.2 million tons / year coal-to-chemicals project of Inner Mongolia Yitai Chemical Co., Ltd. For the crude liquid wax, the raw materials are first mixed, and the raw materials do not contain naphthenes.

[0046] a) mixing the first Fischer-Tropsch crude liquid wax, the second Fischer-Tropsch crude liquid wax, the third Fischer-Tropsch crude liquid wax and the fourth Fischer-Tropsch crude liquid wax, the first Fischer-Tropsch crude liquid wax, the second Fischer-Tropsch crude liquid wax The Tropsch crude liquid wax, the third Fischer-Tropsch crude liquid wax and the fourth Fischer-Tropsch crude liquid wax do not contain naphthenes;

[0047] b) After the mixed material obtained in step a) enters the feed buffer tank, after being boosted by the machine pump and exchanging heat with the hot ...

Embodiment 2

[0056] combine figure 1 Process of the present invention is described:

[0057] In the raw material, the first Fischer-Tropsch crude liquid wax stream accounts for 22.92% Wt in the raw material, and the first Fischer-Tropsch crude liquid wax includes 9.066962% Wt of C5-C9 normal alkanes, 0.201892% Wt of C5-C9 isoparaffins, 47.46498% Wt C10-C13 n-paraffins, 2.015039% Wt C10-C13 isoparaffins, 26.1817% Wt C14-C16 n-paraffins, 1.764391 Wt C14-C16 isoparaffins, 12.06655% Wt C17+ n-paraffins Alkanes, 1.238479% Wt C17+ isoparaffins.

[0058] The second Fischer-Tropsch crude liquid wax stream accounts for 23.20% Wt in the raw material, and the second Fischer-Tropsch crude liquid wax includes C5-C9 normal paraffins of 10.7984425% Wt, C5-C9 isoparaffins of 0.265891% Wt, 47.73631% Wt C10-C13 n-paraffins, 2.036661%Wt C10-C13 isoparaffins, 24.9543185%Wt C14-C16 n-paraffins, 1.6702325%Wt C14-C16 isoparaffins, 11.340289%Wt C17+ n-paraffins, 1. 197856% wt of C17+ isoparaffins.

[0059] Th...

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Abstract

The invention discloses a preparation method of an iso-paraffin composition. The preparation method specifically comprises the following steps: mixing Fischer-Tropsch crude liquid wax, removing lightcomponents and heavy components, carrying out n-alkane adsorption and separation, and rectifying separated iso-paraffin to obtain an iso-paraffin composition product. The provided preparation method has the advantages of fine process, abundant products, and low energy consumption. The raw materials do not contain sulfur or nitrogen, has an extremely low content of aromatic hydrocarbons, and do notcontain cyclo-paraffin. The obtained iso-paraffin composition is high in purity, free of peculiar smell, narrow in distillation range, non-toxic, colorless, high in chemical stability, low in condensation point, low in conductivity, excellent in wetting and surface diffusion force and high in flash point, and is a high-quality chemical raw material.

Description

technical field [0001] The invention relates to the field of indirect coal liquefaction, in particular to a method for preparing an isoparaffin composition. Background technique [0002] In recent years, the development of isoparaffin composition is very rapid, and its application field is also expanding, in edible oil, printing ink, leather, pesticide, insecticide, rubber, cosmetics, spices, chemical polymerization, medicine and in IC electronic components It has a wide range of uses in cleaning and other aspects. Solvent oil products can be divided into aromatic hydrocarbons, dearomatized aliphatics, isoparaffins, naphthenes and normal paraffins. Taking the products of Exxon / Mobil as an example, its grades are divided into aromatics (Solvesso series), dearomatized aliphatics (Exxsol series), isoparaffins (Isopar series), naphthenes (Nappar series), normal There are 7 categories including alkanes (Norpar series), other hydrocarbons (Pegasol series) and oxygen-containing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/00
CPCC10G53/00
Inventor 褚振辉赵军额尔敦
Owner 内蒙古伊泰宁能精细化工有限公司
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