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Method and device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil

A Fischer-Tropsch synthesis, heavy oil technology, applied in chemical instruments and methods, hydrocarbon purification/separation, adsorption purification/separation, etc., can solve the problems of low separation efficiency, low product quality, high equipment investment, and achieve separation efficiency High, high economic efficiency, low energy consumption and low equipment cost

Pending Publication Date: 2022-07-01
CHINA ENERGY GRP NINGXIA COAL IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil in order to overcome the problems of complex process, high equipment investment, low separation efficiency, and low product quality after purification in the prior art. device, the method simplifies the process flow, reduces production costs, improves separation efficiency, and simultaneously improves the product quality of 1-decene

Method used

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  • Method and device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil
  • Method and device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil
  • Method and device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil

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Embodiment 1

[0113] A device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil, such as figure 1 As shown, it includes: the partition wall rectification column T11, the olefin reactive rectification column T12, the first reactant recovery column T13, the isomerized olefin reactive rectification column T14, the second reactant recovery column T15, the adsorber A11, the desorbent Recovery column T16, condenser, reboiler, pump and associated feed lines and lines connecting the above equipment.

[0114] The method for separating 1-decene from the Fischer-Tropsch synthesis stable heavy oil using the device specifically comprises the following steps:

[0115] (1) Fischer-Tropsch synthesis stable heavy oil is added to the next-wall rectifying column T11, and the number of pre-fractionating column plates of this next-wall rectifying column T11 is 20 theoretical plates, the number of public rectifying section column plates, the public stripping section column The number of pl...

Embodiment 2

[0121] A device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil, such as figure 2 shown, with figure 1 The difference is that the olefin reactive distillation column T12 is replaced with an olefin reactor R21 and a filter F21.

[0122] Specifically, it includes: dividing wall rectification column T11, olefin reactor R21, filter F21, first reactant recovery column T13, isomerized olefin reactive distillation column T14, second reactant recovery column T15, internal olefin adsorber A11, removal Adjuvant recovery column T16, condenser, reboiler, pump and related feed pipelines and pipelines connecting the above equipment.

[0123] The method for separating 1-decene from the Fischer-Tropsch synthesis stable heavy oil using the device specifically comprises the following steps:

[0124] (1) Fischer-Tropsch synthesis stable heavy oil is added to the next-wall rectifying tower T11, and the number of pre-fractionating tower plates of this next-wall rectifyin...

Embodiment 3

[0130] A device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil, such as image 3 shown, with figure 1 The difference is that the isoolefin reaction distillation column T14 is replaced by the isoolefin reactor R31 and the isoolefin rectification column T31.

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Abstract

The invention discloses a method and a device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil. The method comprises the following steps: carrying out narrow fraction cutting on Fischer-Tropsch synthesis stable heavy oil to obtain a C10 narrow fraction; carrying out first reaction on the C10 narrow fraction and a first reactant, carrying out first separation on the obtained first product, and then carrying out first reverse reaction on the obtained olefin adduct to obtain C10 olefin; carrying out second reaction on the C10 olefin and a second reactant, and carrying out second separation on an obtained second product to obtain C10 normal olefin; and carrying out adsorption separation on the C10 normal olefin to obtain the 1-decene. According to the method, the high-purity 1-decene product with high added value is separated from the Fischer-Tropsch synthesis stable heavy substance, and by optimizing the separation sequence of impurities in the raw materials, the energy consumption is reduced, the cost is reduced, the separation efficiency is improved, and meanwhile, the quality of the 1-decene product is improved.

Description

technical field [0001] The invention relates to the technical field of high-purity olefin production from coal-based raw materials, in particular to a method and a device for separating 1-decene from Fischer-Tropsch synthesis stable heavy oil. Background technique [0002] 1-Decene has high economic value, can be used as a solvent, can also be used as a raw material for the preparation of flavors, fragrances, medicines, dyes, oils, resins, etc. In addition, it can also be used for the preparation of non-toxic plasticizer o-phenylene Diisononyl dicarboxylate (DINP) and diisodecyl phthalate (DIDP) have grown rapidly in wire and cable materials. The production methods of 1-decene mainly include two kinds, one is obtained by ethylene oligomerization, and the other is obtained by separation from C9-C10 fractions of paraffin cracking. However, at present, 1-decene is mostly produced along with the production of 1-alkenes such as 1-hexene and 1-octene. With the increasing market ...

Claims

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Application Information

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IPC IPC(8): C07C11/02C07C7/00C07C7/04C07C7/12C07C7/05
CPCC07C7/005C07C7/04C07C7/12C07C7/05C07C11/02
Inventor 张安贵高鑫陈久洲刘宗超刘素丽李洪石永杰李鑫钢石好亮杨顺金政伟吕兆海
Owner CHINA ENERGY GRP NINGXIA COAL IND CO LTD