A method for industrial preparation of high-purity low-color boron trifluoride triethanolamine complex

CN122444764APending Publication Date: 2026-07-24张建新
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
张建新
Filing Date
2026-03-17
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve stable preparation of high-purity, low-color, and low-free-BF3 boron trifluoride triethanolamine complexes in large-scale reactors, and traditional processes suffer from high energy consumption and poor batch-to-batch product stability.

Method used

A three-stage stepped gas complexation and gradient temperature degassing method is adopted, combined with nitrogen replacement and pre-cooling treatment, to control the reaction temperature and gas flow rate in the reactor, avoid local overheating, and deeply remove free boron trifluoride, making it suitable for large-scale industrial production.

Benefits of technology

Stable preparation of high-purity (≥99.0%), low-color (≤80 Hazen) and low-free boron trifluoride (≤0.2%) products has been achieved, which is suitable for large-scale production, reduces energy consumption and waste, and improves product stability.

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Abstract

The application discloses an industrialized preparation method of high-purity low-colority boron trifluoride triethanolamine complex and belongs to the technical field of organic boron complex preparation. The application takes triethanolamine and boron trifluoride gas as raw materials, feeds according to a molar ratio of 1:1.02-1.04, and prepares products in a reaction kettle through nitrogen replacement, precooling, three-stage step-by-step aeration complexing, gradient temperature rising degassing and temperature reduction discharging. Through the combined process of sectional temperature control, sectional aeration and gradient degassing, the application solves the problems of local overheating, high colority and high free BF3 content in traditional large-kettle production, and the product has a purity of greater than or equal to 99.0%, a colority of less than or equal to 80 Hazen and free boron trifluoride of less than or equal to 0.2%, and the process is stable and suitable for industrialized large-scale production.
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