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Method for preparing phase-change materials from Fischer-Tropsch (F-T) synthesis product

A technology for phase change materials and synthetic products, applied in heat exchange materials, chemical instruments and methods, petroleum industry, etc., can solve problems such as high production costs, affecting the performance of phase change materials, complexity, etc., and achieve high latent heat of phase change , The effect of continuously adjustable phase transition temperature

Active Publication Date: 2014-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the paraffin substances used in phase change materials are derived from petroleum, and need to go through complicated purification and refining processes. Not only the production cost is high, but also there are still a certain amount of unsuitable components for phase change materials, such as oils, etc. The presence of these unsuitable components affects the performance of phase change materials

Method used

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  • Method for preparing phase-change materials from Fischer-Tropsch (F-T) synthesis product
  • Method for preparing phase-change materials from Fischer-Tropsch (F-T) synthesis product
  • Method for preparing phase-change materials from Fischer-Tropsch (F-T) synthesis product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Using the product of the low-temperature F-T synthesis experimental device of China Petroleum & Chemical Corporation as the raw material, the fraction with a boiling point of 220°C to 420°C was prepared by vacuum distillation in a distillation apparatus with 17 theoretical plates. The weight content of n-alkanes in this fraction is 95%, the weight content of olefins is 2%, and the weight content of oxygen-containing compounds is 3%.

[0022] (2) the above-mentioned cuts obtained in the FHJ-2 catalyst (a kind of Ni / Al 2 o 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the content of active metal nickel in terms of oxides is 40%, and the catalyst is subjected to conventional reduction treatment before use) under the conditions of 5MPa, 200°C, 1.0LHSV and hydrogen-to-liquid ratio of 500 Hydroconversion is used to convert olefins and oxygen-containing compounds therein, and the weight content of normal paraffins in the hydroge...

Embodiment 2

[0030] (1) with embodiment 1;

[0031] (2) Under the action of FHJ-2 catalyst, the fraction obtained above is subjected to hydrogenation conversion under the conditions of 5MPa, 220°C, 0.5LHSV and hydrogen-to-liquid ratio of 500 to convert the olefins and oxygenated compounds therein, and the weight of normal alkanes in the hydrogenation product The content is close to 100%.

[0032] (3) the above-mentioned product obtained through hydrogenation conversion is in a distillation unit with 17 theoretical plates, at 1.33 × 10 3 Under Pa pressure, distillates at 240-400°C were prepared at intervals of 10°C. The melting points of the fraction products in each section are shown in Table 2, and each fraction can be used as a phase change material with a corresponding phase transition temperature.

[0033] Table 2 The melting points of each vacuum distillation product in Example 2

[0034]

[0035](4) Mix the above n-alkane phase change materials in proportion to produce a series...

Embodiment 3

[0041] (1) Using the product of the low-temperature F-T synthesis experimental device of China Petroleum and Chemical Corporation as raw material, in a distillation device with 17 theoretical plates, a fraction with a boiling point of 220°C to 420°C is prepared through vacuum distillation, and the weight of normal alkanes in this fraction is The content is 90%, the olefin weight content is 5%, and the oxygen-containing compound weight content is 3%.

[0042] (2) Put the above-mentioned cuts on FV-10 catalyst (a kind of W-Mo-Ni / Al 2 o 3 Type commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the catalyst is subjected to conventional sulfurization treatment before use) under the action of 6MPa, 280°C, 1.0LHSV and hydrogen-to-liquid ratio of 300 for hydrogenation conversion to convert olefins and oxygen-containing compound, the weight content of n-alkanes in the hydrogenation product is 97%.

[0043] (3) the above-mentioned product obtained ...

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Abstract

The invention relates to a method for preparing phase-change materials from a Fischer-Tropsch (F-T) synthesis product. The comprises the following steps: in the presence of catalyst, carrying out hydrogenation transformation on the F-T synthesis product in which the weight content of normal paraffin hydrocarbons is greater than 85%, thereby transforming olefins and oxygen-containing compounds in the F-T synthesis product into the proper components of the phase-change materials; and distilling the hydrogenated product, and preparing the fraction within the range of 240-400 DEG C according to the fraction width of 5-20 DEG C, wherein the mixture of all the fractions or any fraction is the phase-change material. The method has the advantages of simple process and low production cost, and is especially suitable for preparing serial phase-change materials; and the prepared phase-change materials have the characteristics of high phase-change latent heat, continuously adjustable phase-change temperature and the like. The phase-change materials can be used in the fields of fiber fabrics, architectural energy conservation, electric appliance protection and the like.

Description

technical field [0001] The invention belongs to the technical field of special waxes, in particular to a method for preparing a series of n-paraffin phase change materials from Fischer-Tropsch (F-T) synthesis products. 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 has been continuously strengthened; and the environmental problems caused by the use of these fossil fuels are becoming more and more serious. Seriously, the utilization of energy saving and solar energy has been widely valued. At the same time, with the development of society, people have higher and higher requirements for living comfort, which requires more energy consumption. [0003] Fischer-Tropsch (F-T) synthesis technology was invented in 1923 and industrialized in Germany in 1936. Since the 1990s, break...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02C10G49/00C10G7/00C09K5/06
Inventor 孙剑锋袁平飞张志银高蒿
Owner CHINA PETROLEUM & CHEM CORP
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