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Preparation method of high latent heat phase change material

A technology of phase change materials and latent heat, which is applied in the field of preparation of high latent heat phase change materials, and can solve problems such as failure to prepare hydrocarbon phase change materials

Active Publication Date: 2017-12-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods still cannot prepare hydrocarbon phase change materials with a melting point above 70°C.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment includes four parts: (1) hydrogenation, (2) distillation, (3) emulsification and (4) sweating.

[0061] (1) Hydrogenation

[0062] Using the wax oil product (n-alkane content of 95.50wt%) of the low-temperature F-T synthesis experimental device of China Petrochemical Corporation as raw material, the FHJ-2 catalyst (a Ni / Al 2 o 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the active metal content is 40% based on oxides, and the catalyst is subjected to conventional reduction treatment before use), under the action of reaction pressure 5.0MPa, reaction temperature 200℃, volume space velocity 1.0h -1 Hydrogenation is carried out under the condition of 500:1 volume ratio of hydrogen to liquid to convert olefins and oxygenates in it. The weight content of normal paraffins in the hydrogenation product is 97.36%. Chromatography-mass spectrometry analysis, no olefins, alcohols, acids and other substances were detec...

Embodiment 2

[0089] This embodiment includes four parts: (1) hydrogenation, (2) distillation, (3) emulsification and (4) sweating.

[0090] (1) Hydrogenation

[0091] With embodiment 1.

[0092] (2) Distillation

[0093] With embodiment 1.

[0094] (3) Emulsification

[0095] This part includes (A1) oil phase material preparation, (A2) water phase material preparation, (A3) emulsion preparation three steps.

[0096] (A1) Oil phase material preparation

[0097]Take 84.0Kg of the fraction prepared in process (2), heat to 82°C and melt, add 1.5Kg of sorbitan monooleate, 0.8Kg of diethylene glycol monolaurate, and 0.5Kg of triacetamide oleate, and stir uniform.

[0098] (A2) Preparation of aqueous phase materials

[0099] Put 0.1Kg of CO at 26.0-26.2 atmospheric pressure (gauge pressure) 2 Dissolve in 13.1Kg of water and heat to 88°C.

[0100] (A3) Emulsion preparation

[0101] Pressurize the oil phase material to 26.0-26.2 atmospheres (gauge pressure), and stir at a speed of 800r / mi...

Embodiment 3

[0107] This embodiment includes four parts: (1) hydrogenation, (2) distillation, (3) emulsification and (4) sweating.

[0108] (1) Hydrogenation

[0109] With embodiment 1.

[0110] (2) Distillation

[0111] With embodiment 1.

[0112] (3) Emulsification

[0113] This part includes (A1) oil phase material preparation, (A2) water phase material preparation, (A3) emulsion preparation three steps.

[0114] (A1) Oil phase material preparation

[0115] Take 82.0Kg of the fraction prepared in process (2), heat to 84°C and melt, add 1.9Kg of sorbitan monostearate, 0.8Kg of tetraethylene glycol monostearate and 0.5Kg of lauryl betaine , stir well.

[0116] (A2) Preparation of aqueous phase materials

[0117] With 27.5% H 2 o 2 solution, solid NaOH and H 2 O formulated with H 2 o 2 1.2%, NaOH 7.0 mg / Kg aqueous solution, take 14.8Kg, pressurize to 24.6-24.8 atmospheric pressure (gauge pressure) under nitrogen condition, and heat to 90°C.

[0118] (A3) Emulsion preparation ...

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Abstract

The invention discloses a preparation method of a high latent heat phase change material. The preparation method comprises carrying out hydro-conversion on an F-T synthesis product as a raw material under action of a catalyst, carrying out distillation on the hydrogenation product to obtain a sweating raw material for a distillation range and carrying out emulsification and sweating to obtain a desired product. Based on the ordinary sweating method, a high temperature keeping stage at an appropriate temperature is used in the cooling process and airflows pass through a wax layer and carry away a liquid component in the sweating process so that the separation effects on a solid component and the liquid component is improved and a separation rate is accelerated, and preferably, the raw materials and a solution of a substance decomposable into gas are emulsified so that the liquid component can be fast discharged and the sweating method without solvent separation can produce the high latent heat phase change material. The method has the advantages of low equipment investment, simple production process, low operation cost, safety, energy saving and no solvent pollution.

Description

technical field [0001] The invention belongs to the technical field of special wax production, in particular to a preparation method of a high latent heat phase change material. Background technique [0002] The world's energy supply is dominated by fossil fuels such as oil, natural gas, and coal. With the reduction of these non-renewable resource reserves and the rise in prices, research on various alternative energy sources such as F-T synthesis has been continuously strengthened; and the use of these fossil fuels caused Environmental problems are becoming more and more serious, and energy conservation and utilization of solar energy have received extensive attention. At the same time, with the development of society, people have higher and higher requirements for living comfort, which requires more energy consumption. [0003] Phase change material (Phase Change Material, referred to as PCM) does not change much in temperature during melting or solidification, but absorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C10G67/02C10G73/40C10G73/36C10G73/42
CPCC09K5/063C10G67/02C10G73/36C10G73/40C10G73/42C10G2300/1022
Inventor 孙剑锋赵彬刘纾言杨秀娜张志银毕文卓
Owner CHINA PETROLEUM & CHEM CORP
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