Paraffin energy storage medium for phase change energy storage wall material, and preparation method thereof

A technology of energy storage media and wall materials, applied in heat exchange materials, chemical instruments and methods, walls, etc., can solve the problems of high energy consumption, not fully disclosed preparation technology, high depth of solvent dewaxing processing, etc., to achieve storage Significant energy saving, low production cost and stable product quality

Active Publication Date: 2013-06-05
NO 2 OIL PRODION PLANT HENAN OIL FIELD BRANCHCORP SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase-change special waxes currently produced in China mainly use solvent dewaxing, deoiling, and removal of low melting point components to purify n-alkanes. This method requires high processing depth and high energy consumption for solvent dewaxing, and there is no specific preparation technology. full disclosure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) With the petroleum oil Changsanxian wax paste as raw material (16.5% oily), in the vacuum distillation device with two towers connected in series, the tower top temperature is respectively 160 DEG C and 195 DEG C, and the pressure is to carry out vacuum distillation under 6KPa, and cut 290 ~305°C fraction.

[0018] (2) Distill the above-mentioned narrow fraction at 290-305°C under reduced pressure, and purify by sweating at 19-22°C as the end point temperature.

[0019] (3) Add 2% activated clay to the sweating product, and refine the clay at a reaction temperature of 105° C. and a reaction time of 30 minutes.

[0020] (4) The paraffin energy storage medium prepared by the above method has a phase transition temperature of 20-24° C., a C16-C18 n-paraffin content of 92-94%, and a phase transition enthalpy of 130-140 J / g.

Embodiment 2

[0022] (1) With the petroleum Changsanxian wax paste as raw material (oil-containing 11.45%), in a vacuum distillation device with two towers connected in series, the tower top temperature is 160°C and 195°C respectively, and the pressure is 6Kpa to carry out vacuum distillation, and cut 305 ~320°C fraction.

[0023] (2) Sweat and purify the 305-320°C fraction of the above-mentioned decompression fraction with 21-24°C as the end point temperature.

[0024] (3) Add 3% activated clay to the sweating product, and refine the clay at a reaction temperature of 110° C. and a reaction time of 45 minutes.

[0025] (4) The paraffin energy storage medium prepared by the above method has a phase transition temperature of 22-26° C., a C16-C18 n-paraffin content of 93-95%, and a phase transition enthalpy of 150-160 J / g.

Embodiment 3

[0027] (1) With the petroleum regular three-line wax paste as raw material (6.71% oily), in the vacuum distillation unit with two towers connected in series, the tower top temperature is respectively 160 DEG C and 195 DEG C, and the pressure is reduced under 6Kpa Pressure distillation, cut 305 ~ 320 ℃ fraction.

[0028] (2) Sweat and purify the 305-320°C fraction of the above-mentioned decompression fraction with 21-24°C as the end point temperature.

[0029] (3) Add 3% activated clay to the sweating product, and refine the clay at a reaction temperature of 110° C. and a reaction time of 45 minutes.

[0030] (4) The paraffin energy storage medium prepared by the above method has a phase transition temperature of 24-28° C., a C17-C19 n-paraffin content of 94-96%, and a phase transition enthalpy of 170-180 J / g.

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Abstract

The present invention relates to a paraffin energy storage medium for a phase change energy storage wall material, and a preparation method thereof, wherein a petroleum cerate at third atmospheric side stream is adopted as a raw material, and processes such as pressure reduction distillation, sweating and refinement are performed to prepare the paraffin energy storage medium. The preparation method has characteristics of rich raw material source, simple process, flexible unit operation, and stable product quality. The product prepared by the method has characteristics of high n-alkane content, narrow carbon distribution, and high energy storage density, and can meet requirements of the paraffin energy storage medium for domestic phase change energy storage wall materials.

Description

【Technical field】 [0001] The invention relates to the technical field of phase-change energy storage media, in particular to a paraffin energy storage medium used for phase-change energy storage wall materials and a preparation method thereof. 【Background technique】 [0002] The phase change energy storage wall material is a phase change energy storage wall with higher heat capacity and better energy storage performance by adding phase change energy storage media in different ways to common building materials (such as gypsum board and mortar). body material. The energy storage medium in this material can automatically store and release latent heat within a certain temperature range according to the change of ambient temperature, so as to reduce the fluctuation of indoor temperature, increase the thermal inertia of the house, improve the indoor cooling and heating comfort, and make the building heating The air-conditioning system uses no or less energy, reduces the capacity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06E04B2/00
Inventor 潘金亮肖文珍吴京盘姚海洋郭良兰
Owner NO 2 OIL PRODION PLANT HENAN OIL FIELD BRANCHCORP SINOPEC
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