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Method and system for coproducing isononyl alcohol and C8 alkane

A technology of carbon octane and isononanol, which is applied in the field of co-production of isononanol and carbon octane, can solve the problems that hydroformylation catalysts are difficult to withstand high temperature, threaten process safety, and temperature rise, etc. Possibility of boiling point by-products, effects of high purity and small fluctuations in process temperature

Inactive Publication Date: 2020-04-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are important technical problems in this process: because the hydroformylation reaction process is a strong exothermic reaction, the temperature of the reaction system often rises rapidly due to untimely heat transfer. On the one hand, it may threaten the safety of the process. On the other hand, hydroformylation Catalysts are also difficult to withstand high temperatures

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  • Method and system for coproducing isononyl alcohol and C8 alkane
  • Method and system for coproducing isononyl alcohol and C8 alkane

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Embodiment 1

[0040] Example 1 see figure 2 As mentioned above, combined with actual chemical equipment, the present invention provides a specific example of a continuous production of isononanol and carbon octaalkane with a cobalt-phosphine catalyst participating in the catalysis, and carbon octaolefins, carbon monoxide, and hydrogen as raw materials.

[0041] Specifically, this embodiment includes: firstly, the carbonylation and hydrogenation reaction is carried out with carbon monoxide and hydrogen under the catalysis of a cobalt-phosphine catalyst, and the catalyst is cobalt. A phosphine catalyst, the cobalt phosphine catalyst is composed of a cobalt source and a phosphine ligand, and the cobalt phosphine catalyst maintains a Co:P ratio of 3:1, 2:1, 1:1, 1:2, or 3:1~ A certain value in the range of 1:2; too high a Co:P ratio will make the catalyst unstable, but at the same time, too low a Co:P ratio will inhibit the carbonylation / hydrogenation reaction and produce a considerable amount...

Embodiment 2

[0045] Example 2 see figure 2 As shown, firstly, diisobutylene enters the reactor R1 through the pipeline S1 at a flow rate of 1313kg / h from the liquid delivery pump, and carbon monoxide and hydrogen are respectively input into the reactors R1, R2 and R3 at a flow rate of 91kg / h and 15kg / h , the carbonylation / hydrogenation reaction is carried out under the catalysis of cobalt phosphine catalyst, the catalyst is Co 2 (CO) 8 Mixture with phosphine ligand, the phosphine ligand is trioctylphosphine (CAS No. 4731-53-7); keep the Co:P ratio at 1.5, and carry out the pre-preparation process. The pre-preparation process includes the following steps: the Co 2 (CO) 8 Dissolve trioctylphosphine in isononyl alcohol, replace the air with nitrogen, stir the mixture, and fill with CO, H 2 Gas to a pressure of 5MPa, and react at 140°C for 5h to obtain a cobaltphosphine catalyst.

[0046] The reactants flow through the reactors R1, R2, and R3 in sequence, and the reaction temperature is ...

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Abstract

The invention discloses a method and a system for coproducing isononyl alcohol and C8 alkane. The method comprises the following steps: in a H2 / CO mixed atmosphere, carrying out carbonylation / hydrogenation reaction on a mixed reaction system containing C8 olefin and a cobalt phosphine catalyst at 150-210 DEG C under the pressure of 5-11 Mpa to obtain a crude isononyl alcohol product and C8 alkane;and carrying out hydrogenation reaction on a hydrogenation reaction system containing the crude isononyl alcohol product and a hydrogenation catalyst at 60-190 DEG C under the hydrogenation pressureof 1-9 Mpa to obtain isononyl alcohol. The invention provides the method for coupling hydroformylation reaction and hydrogenation reaction. A cheap and efficient coupling catalyst is developed, through reasonable design of a reaction separation system, a heterogeneous system is well mixed and efficient in reaction, C8 olefin is finally converted into C8 alkane and isononyl alcohol, and high-quality gasoline components and high-end plasticizer raw materials can be produced at the same time.

Description

Technical field [0001] The invention belongs to the field of chemical engineering technology, and specifically relates to a method and system for co-producing isononyl alcohol and carbon octane. Background technique [0002] Iso-nonyl alcohol (INA), as a higher alcohol, is mainly used to produce diisononyl phthalate (DINP) and cyclohexane 1,2-dicarboxylic acid diisononyl ester (DINCH). ), diisononyl adipate (DINA), triisononyl trimellitate (TINTM) and other advanced plasticizers, among which diisononyl phthalate is used in the largest amount. As the safety of diisononyl phthalate is gradually recognized by the industry, it may replace traditional plasticizers such as dibutyl phthalate (DBP) and dioctyl phthalate (DOP). Especially in toy processing, medical treatment, food utensils, etc. [0003] In 2005, the EU Council of Ministers passed a bill banning the use of six plasticizers (also known as P6) including dibutyl phthalate (DBP) in children's toys and products. Later,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/141C07C31/125C07C45/50C07C47/02C07C5/03C07C9/16C07C29/90B01J31/24C10G45/06
CPCB01J31/2409B01J2231/321B01J2231/645B01J2531/845C07C5/03C07C29/141C07C29/90C07C45/505C07C2531/24C10G45/06C10G2400/02C07C31/125C07C47/02C07C9/16
Inventor 夏春谷王丹朱刚利许传芝郧栋刘建华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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