Method for producing low alcohol, high concentration formaldehyde

Abstract

The present invention relates to one improved silver process of producing formaldehyde. Produced gas with relatively high temperature and with heat from waste heat boiler is used as heat source for eliminating alcohol and water from formaldehyde mixture in the first absorption tower, and partial alcohol containing dilute formaldehyde solution is returned from some place in the second absorption tower in the absorption system with gradually lowered temperature to realize the dealcoholization-reutilization circulation. The process is simple, low in methanol consumption, low in investment and reasonable energy utilization, and the produced formaldehyde product has low alcohol content and high concentration.

Description

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AI Technical Summary

Benefits of technology

This technology makes it easier than traditional methods that use large amounts of water or chemicals during production processes. It also saves money compared to current ways like burning fossil fuels while producing pure formalin product instead of complex mixtures containing multiple ingredients such as urea.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving both the efficiency and effectiveness of producing formaldehzene from an ethylene oxide process or another chemical reaction without increasing costs associated with either one's own technology or reducing emissions during manufacturing processes.

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