A multi-stage purification crystallization system
CN122298056APending Publication Date: 2026-06-30FUJIAN BANGFU NEW MATERIAL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FUJIAN BANGFU NEW MATERIAL CO LTD
- Filing Date
- 2026-04-29
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
The current production of potassium perfluorobutyl sulfonate suffers from problems such as insufficient purity, numerous impurities, poor crystal form, high mother liquor residue, and poor production continuity.
Method used
The design incorporates a multi-stage crystallization system consisting of a first crystallizer, a second crystallizer, and a third crystallizer stacked sequentially. Material flow is generated by the difference in liquid level, and crystal growth is promoted by gradient temperature changes and baffle assembly, thus achieving continuous multi-stage crystallization production.
Benefits of technology
It improved product purity and crystal quality, reduced mother liquor residue, and enhanced production stability and efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122298056A_ABST
Abstract
This invention discloses a multi-stage purification and crystallization system, comprising a first crystallization tank, a second crystallization tank, and a third crystallization tank, which are stacked sequentially from top to bottom. A feeding element is connected to the top of the first crystallization tank, and a slurry outlet element is connected to the bottom of the third crystallization tank. The first and second crystallization tanks are connected by a liquid delivery buffer mechanism. The second crystallization tank is equipped with a gradient cooling structure, which creates a temperature gradient from top to bottom within the tank. A guide vane assembly is installed inside the second crystallization tank, forming a tortuous liquid flow path from top to bottom. This invention has the advantages of excellent impurity removal, good product crystal form, and high mother liquor utilization. It enables continuous production, overcomes the intermittent production problems of traditional processes, and significantly improves production stability.
Need to check novelty before this filing date? Find Prior Art