Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of method of cracking carbon 9 low-temperature hydrogenation to produce cyclopentane

A technology for producing cyclopentane and cracking carbon, which is applied in the fields of hydrocarbon cracking to produce hydrocarbons, hydrocarbons, chemical instruments and methods, etc., can solve the problems of high pressure, high reaction temperature, strict equipment requirements, etc. The effect of increasing conversion rates

Active Publication Date: 2020-01-07
濮阳市联众兴业化工有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high reaction temperature, high pressure and strict requirements on equipment in the cracking C9 hydrogenation process in the prior art, and propose a method for cracking C9 low-temperature hydrogenation to cyclopentane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of method of cracking carbon 9 low-temperature hydrogenation to produce cyclopentane
  • A kind of method of cracking carbon 9 low-temperature hydrogenation to produce cyclopentane
  • A kind of method of cracking carbon 9 low-temperature hydrogenation to produce cyclopentane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present invention proposes a method for producing cyclopentane by pyrolyzing carbon nine by low-temperature hydrogenation, including the following steps:

[0026] S1. Control stage: mix the by-product cracked carbon nine after naphtha cracking with the mixed components to obtain mixture A, and control the total content of diene and alkyne in mixture A to be not less than 30% and not more than 60%, the monoene content is not less than 30% and not more than 50%;

[0027] The mixed component is a carbon five material containing monoene, diene and alkyne;

[0028] S2. Hydrogenation auxiliary reaction stage: the mixture material A is added to the hydrogenation auxiliary reaction chamber, and under the action of a high nickel catalyst with a nickel content of 8%, selective hydrogenation is carried out in a reverse feed mode and controlled The inlet temperature of the hydrogenation auxiliary reaction chamber is 50°C, the pressure is 2.5MPa, the reflux ratio is 12, and the hydrog...

Embodiment 2

[0034] The present invention proposes a method for producing cyclopentane by pyrolyzing carbon nine by low-temperature hydrogenation, including the following steps:

[0035] S1. Control stage: mix the by-product cracked carbon nine after naphtha cracking with the mixed components to obtain mixture A, and control the total content of diene and alkyne in mixture A to be not less than 30% and not more than 60%, the monoene content is not less than 30% and not more than 50%;

[0036] The mixed component is a carbon five material containing monoene, diene and alkyne;

[0037] S2. Hydrogenation auxiliary reaction stage: the mixture material A is added to the hydrogenation auxiliary reaction chamber, and under the action of a high nickel catalyst with a nickel content of 10%, selective hydrogenation is carried out in a reverse feed mode and controlled The inlet temperature of the hydrogenation auxiliary reaction chamber is 45°C, the pressure is 2MPa, the reflux ratio is 10, and the hydroge...

Embodiment 3

[0043] The present invention proposes a method for producing cyclopentane by pyrolyzing carbon nine by low-temperature hydrogenation, including the following steps:

[0044] S1. Control stage: mix the by-product cracked carbon nine after naphtha cracking with the mixed components to obtain mixture A, and control the total content of diene and alkyne in mixture A to be not less than 30% and not more than 60%, the monoene content is not less than 30% and not more than 50%;

[0045] The mixed components are carbon six materials rich in monoenes, dienes and alkynes;

[0046] S2. Hydrogenation auxiliary reaction stage: the mixture material A is added to the hydrogenation auxiliary reaction chamber, and under the action of a high nickel catalyst with a nickel content of 12%, the selective hydrogenation is carried out by reverse feeding and controlled The inlet temperature of the hydrogenation auxiliary reaction chamber is 40℃, the pressure is 1.5MPa, the reflux ratio is 8, the hydrogen-to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for preparing cyclopentane by low-temperature hydrogenation of cracking C9. The method comprises the following steps: S1, adjusting and controlling: mixing the byproduct (cracking C9) after cracking of naphtha and mixed components, so as to obtain a mixed material A; S2, hydrogenation main reaction: adding the mixed material A into a hydrogenation main reaction chamber, preheating under the action of a composite nickel and molybdenum catalyst, introducing a C4 activating material, and performing hydrogenation reaction on the cracking C9; S3, separating: introducing an outlet material of the hydrogenation main reaction chamber into a heavy component removal tower to separate, wherein the material at the top of the heavy component removal tower is a cyclopentane mixed component; introducing the material at the top of the heavy component removal tower into a light component removal tower to separate, wherein the material at the bottom of the light componentremoval tower is a pure product of the cyclopentane. The method has the advantages that the hydrogenation temperature is low, the conditions are mild, the requirement on equipment is low, the conversion rate in reaction is high, and the catalysis activity of the composite nickel and molybdenum catalyst is high.

Description

Technical field [0001] The invention relates to the technical field of cracked carbon nine hydrogenation, in particular to a method for producing cyclopentane by low-temperature hydrogenation of cracked carbon nine. Background technique [0002] Part of the by-products after naphtha cracking are cracked carbon nine, and cracked carbon nine contains high value-added petrochemical products such as cyclopentadiene, cyclopentene, cyclopentane and cyclohexane. Among them, cyclopentane can replace the atmosphere Hydrochlorofluorocarbons (CFCS), which have a destructive effect on the ozone layer, are used in refrigeration products and are beneficial to the protection of the ozone layer. Cyclohexane is a commonly used organic solvent in the chemical industry. The cyclopentadiene and cyclopentene contained in cracked carbon nine can be hydrogenated to produce cyclopentane, so the hydrogenation process of cracked carbon nine has high economic value and environmental benefits. At present, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C4/06C07C7/04C07C13/10B01J31/34
CPCB01J31/34B01J2231/50C07C4/06C07C7/005C07C2531/34C07C2601/08C07C13/10
Inventor 张文魁游倩倩管世超鲁少飞张怀敏毛环瑞
Owner 濮阳市联众兴业化工有限公司