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Method for producing phase-change material through vegetable oil hydrogenation

A phase change material and vegetable oil technology, which is applied in the field of vegetable oil hydrogenation to produce phase change materials, can solve the problems of lack of high-quality phase change paraffin and difficulty in purification, so as to avoid hydrocracking reaction, reduce the difficulty of separation and purification, and reduce energy consumption low effect

Pending Publication Date: 2021-02-09
上海科瑞德能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the raw materials of phase-change paraffin are difficult to obtain and difficult to purify, it leads to the lack of high-quality phase-change paraffin, especially in the range of 18-28°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for hydrogenating vegetable oil to produce phase change materials, comprising the steps of:

[0030] (1) Dephospholipid, dehydration, desalination and de-impurity treatment of vegetable oil or its derivatives;

[0031] (2) Carry out olefin saturation and hydrodeoxygenation process on the treated raw material;

[0032] (3) Separating hydrogenation products to obtain water, dry gas, liquefied petroleum gas and C16-C18 normal paraffin mixed distillates;

[0033] (4) Separation and purification of C16-C18 normal paraffin mixed distillate oil, and extract C16 and C18 normal paraffin;

[0034] In the step (1), the vegetable oil is palm oil.

[0035] In the step (1), the vegetable oil derivative is refined oleic acid.

[0036] In the step (1), dephospholipids are washed by adding phosphoric acid, desalted by electric desalination, dehydrated by negative pressure distillation dehydration, and impurity removed by centrifugal separation or plate and frame filtration. ...

Embodiment 2

[0047] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0048] In the step (1), the vegetable oil is rapeseed oil.

[0049] In the step (1), the vegetable oil derivative is refined linoleic acid.

[0050] In the step (2), the hydrogenation process adopts an upflow reactor ebullating bed with good heat and mass transfer, or uses it in combination with a downflow fixed bed reactor.

[0051] In the step (2), the operating pressure of the hydrogenation process is 10MPa, the temperature is 380°C, the volume ratio of hydrogen to oil is 1000:1, and the volume space velocity is 0.6h -1 .

[0052] In the step (2), the hydrogenation process is catalyzed by mixing an oil-soluble catalyst and a solid catalyst without an acid center, the amount of the oil-soluble catalyst is 0.03%wt of the raw oil, and the amount of the solid catalyst is 0.03%wt of the raw oil. 0.8%wt.

[0053] The oil-soluble liquid catalyst is molybdenum naphthenate or molybdenum alkylt...

Embodiment 3

[0056] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0057] In the step (1), soybean oil is used as vegetable oil.

[0058] In the step (1), the vegetable oil derivative is a refined fatty acid.

[0059] In the step (2), the hydrogenation process adopts a downflow fixed-bed reactor, and the raw material oil needs to be diluted with circulating oil, and the volume ratio of the circulating oil to the raw material oil is 2-5:1.

[0060] In the step (2), the operating pressure of the hydrogenation process is 15MPa, the temperature is 400°C, the volume ratio of hydrogen to oil is 1200:1, and the volume space velocity is 1.2h -1 .

[0061] In the step (2), the hydrogenation process is catalyzed by mixing an oil-soluble catalyst and a solid catalyst without acid centers. The amount of the oil-soluble catalyst is 0.05%wt of the raw material oil, and the amount of the solid catalyst is 0.05%wt of the raw material oil. 1.2%wt.

[0062] The oil-sol...

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Abstract

The invention relates to the technical field of petrochemical engineering, in particular to a method for producing a phase-change material through vegetable oil hydrogenation. The method comprises thefollowing steps: (1) carrying out phospholipid removal, dehydration, desalination and impurity removal treatment on vegetable oil or derivatives thereof; (2) carrying out olefin saturation and hydrodeoxygenation on the treated raw material; (3) separating the hydrogenation product to obtain water, dry gas, liquefied gas and C16-C18 n-alkane mixed distillate oil; and (4) separating and purifying the C16-C18 n-alkane mixed distillate oil, and extracting C16 and C18 n-alkanes. According to the processing method, the vegetable oil can be processed to obtain the high-purity n-alkane phase change material, the steps are simple, the operation and control are convenient, the energy consumption is low, and the added value of the product is high.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a method for hydrogenating vegetable oil to produce phase change materials. Background technique [0002] Phase change material (PCM for short) refers to a class of materials that can absorb or release a large amount of energy (ie phase change enthalpy) when a substance undergoes a phase change. Since the phase change material uses latent heat energy storage, the heat storage density is high, the heat storage device has a compact structure, and the temperature itself is basically unchanged during the phase change process, which is easy to manage. With the improvement of global energy conservation awareness, this phase change material The characteristics have attracted the attention of researchers, and phase change heat storage technology is becoming more and more brilliant in the field of energy storage. [0003] Phase change materials absorb heat when they are in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/04C07C9/15C07C9/22C07C5/03C09K5/06
CPCC07C7/04C07C5/03C09K5/06C07C9/15C07C9/22
Inventor 贺伟利毕晟任兴亮
Owner 上海科瑞德能源科技有限公司
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