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Production method of wax-type phase transition material

A technology of phase change materials and production methods, applied in heat exchange materials, chemical instruments and methods, petroleum wax recovery, etc., can solve the problems of inability to produce wax phase change materials, achieve improved separation effect, and increase crystal size , low operating costs

Active Publication Date: 2016-07-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these improvements still cannot produce waxy 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

[0049] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and other processes.

[0050] (1) Preparation

[0051] Connect the jacket of the sweating dish and the movable coil to the circulation system, fix the coil on the sweating dish; use water as the medium; start the heating function of the circulation system to raise the temperature of the circulating water medium to 78°C.

[0052] The lower part of the sweating dish plate is filled with water; the lower part of the sweating dish is connected with a decompression buffer tank and a vacuum pump.

[0053] (2) Loading

[0054] Use No. 72 semi-refined wax (produced by Dalian Petrochemical Company, its properties are: melting point 72.50°C; oil content 0.66%; n-paraffin content 68.25%) as raw material, hea...

Embodiment 2

[0072] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and other processes.

[0073] (1) Preparation

[0074] Connect the jacket of the sweating dish and the movable coil to the circulation system, and fix the coil on the sweating dish; use water as the medium; start the heating function of the circulation system to raise the temperature of the circulating water medium to 78°C.

[0075] The lower part of the sweating dish plate is cushioned with water.

[0076] Install the sealing system on the upper part of the sweating dish and connect it with the pressurized buffer tank and the compressor. Connect the emptying system of the pressurized buffer tank and the exhaust port at the lower part of the sweating dish to the recovery system respectively, using ...

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Abstract

The invention discloses a production method of a wax-type phase transition material. The method is as below: adding a low boiling point liquid in a feedstock; properly adding a high temperature thermostat phase at a suitable temperature during a cooling phase; and using airflow to pass through a wax layer to carry out a liquid component in a heating sweating process, so as to enhance separation effect and accelerate separation speed. Based a common sweating method, the method adds a mandatory separation process of liquid component and a solid component, so that solvent-free oil removal sweating method can produce wax-type phase transition material products. The method has the advantages of low plant investment, simple production process, low operating costs, and no solvent pollution.

Description

technical field [0001] The invention belongs to the technical field of special wax production, in particular to a production method of wax phase change materials. Background technique [0002] Phase Change Material (PCM for short) does not change much in temperature during melting or solidification, but absorbs or releases considerable latent heat in a small temperature range. This characteristic makes it useful in constant temperature and energy storage. Wide range of applications. Generally, phase change materials are required to have appropriate phase change temperature and large phase change latent heat. In the early 1980s, the United States applied phase change materials to the aerospace field and achieved good application results, and then widely used in the military field. At the end of the 1980s, phase change materials began to be used in civilian applications, and some products have been sold in the US and European markets. [0003] According to the phase change ...

Claims

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Application Information

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IPC IPC(8): C10G73/36C10G73/42C09K5/06
Inventor 孙剑锋孙国权韩劲松吴颖刘纾言陈明
Owner CHINA PETROLEUM & CHEM CORP