A rectification integrated device for preparing phase change material from fischer-tropsch wax

By designing a preheating dehydration and negative pressure extraction system in the Fischer-Tropsch wax distillation integrated unit, the problems of tower pressure fluctuations and high energy consumption caused by moisture in crude Fischer-Tropsch wax feedstock were solved, achieving high-purity and low-cost production of Fischer-Tropsch wax phase change materials.

CN122183196APending Publication Date: 2026-06-12HENAN ZT LEAGUE CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN ZT LEAGUE CHEM
Filing Date
2026-03-19
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In existing technologies, trace amounts of moisture in crude Fischer wax feedstock can easily cause pressure fluctuations in the distillation column, affecting product purity. Furthermore, traditional processes have high energy consumption and cannot achieve continuous integration.

Method used

Design an integrated distillation unit comprising a preheating and dehydration component and a negative pressure device. The crude Fischer-Tropsch wax feedstock is preheated by a gaseous heat source at the top of the column to evaporate and liquefy the water. At the same time, a negative pressure environment is established in the flash tank to achieve integrated dehydration and negative pressure extraction, reducing equipment footprint and cost.

Benefits of technology

It achieves stable operation of the column and improves the purity of the distillation products, reduces energy consumption, and is suitable for the continuous and large-scale production of high-quality Fischer-Tropsch wax phase change materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

A rectification integrated device for preparing phase change material from fischer-tropsch wax, which is characterized in that a tower top gas pipe (102) is connected to the top of a tower body (101) and penetrates a tower cavity (110), a preheating and dewatering assembly (3) is arranged on a conveying pipe (202), the preheating and dewatering assembly (3) comprises a flash tank (301), a fixed bin (308) is arranged at the top of the flash tank (301), a negative pressure generating assembly is arranged at the top of the fixed bin (308) and is used for establishing a negative pressure environment in the inner cavity of the flash tank (301), the application discloses a rectification assembly with preheating and dewatering functions, the tower top steam of the tower body itself is used as a heat source, and dewatering is strengthened under negative pressure, so that external energy consumption can be greatly reduced, thereby ensuring the stable operation of the tower body and the purity of the phase change material product, and the device integrates the functions of preheating, dewatering and negative pressure extraction in a single equipment, so that the equipment area and investment cost are reduced.
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