Method for producing a series of phase change wax products

Abstract

The invention discloses a method for producing a series of phase change wax products. The method comprises: refining a Fischer-Tropsch synthetic wax raw material through a hydrogenation reaction to obtain a Fischer-Tropsch refined wax; carrying out pressure reducing distillation on the Fischer-Tropsch refined wax; and separating continuous distillates with distillation range of 5-30 DEG C by continuously increasing the operation temperature to obtain a series of phase change wax products, wherein the pressure of the pressure reducing distillation is 0-1000 pa, the tower top operation temperature is 120-260 DEG C, and the phase change enthalpy value of the series of phase change wax products is larger than or equal to 170 J / g. According to the method of the invention, various trademark phase change wax products with the melting points of 5-80 DEG C can be separated from the Fischer-Tropsch refined wax, the carbon number of the products is concentrated, the enthalpy value is high, and the process is high in flexibility, can achieve customization according to needs, is low in production cost, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for producing a series of phase-change wax products. Background technique [0002] Phase change energy storage materials use the phase change process of materials to absorb heat (cold) from the environment or release heat (cold) to the environment, so as to achieve energy storage and release and adjust demand and supply mismatch. Phase change energy storage wax is one of the phase change energy storage materials, which can effectively avoid the overcooling and phase separation of inorganic phase change materials, and overcome the shortcomings of inorganic phase change materials that cannot be reused many times. Generally, phase change materials are required to have appropriate phase change temperature and large phase change latent heat. According to the temperature range of energy storage, phase change energy storage wax can be divided into high te...

AI Technical Summary

Problems solved by technology

However, the Fischer-Tropsch wax has a wide carbon number distribution range, and it is directly used as a phase-change wax material with a small phase-change latent heat and a wide phase-change interval. At the same time, a small amount of isoparaffins also affects the improvement of its phase-change latent heat.