On-line control multi-still continuous production method for wood adhesive

Abstract

The invention discloses an on-line control multi-kettle continuous type production method for wood adhesive. Complicated chemical reaction processes are decomposed in different reaction kettles, which simplifies the chemical reaction so that a computer control system of a computer operates and controls; the computer system is used to make on-line display, data processing, information feedback andautomatic control to processing parameters and technical targets such as reaction time, reaction temperature, pH values, viscosity and so on of each reaction kettle and each chemical reaction phase to achieve the aim of instant control of the magnitude of the average molecular weight, particularly the distribution of the magnitude of the molecular weight, of wood adhesive. The method of the invention can be used to produce a plurality of resin adhesive; the chemical reaction, the control principle and the actual operation of the materials are basically same as long as the technical targets such as processing parameters, production flow, pH values, and viscosity and so on are determined according to the concrete formula requirement.

Description

technical field [0001] The invention relates to the field of wood adhesive manufacture, in particular to a method for using a computer to automatically control the combination of multiple reaction kettles on-line to form a continuous production method. Background technique [0002] The production and preparation of wood adhesives basically go through two chemical reaction processes: addition reaction and polycondensation reaction. The production process generally goes through the stages of temperature rise, heat preservation, and temperature drop. During the production process, the viscosity is constantly increasing and the pH value is constantly changing. The control of the reaction end point is realized by adjusting the pH value and lowering the reaction temperature, so the reaction process and production process are relatively complicated. However, the production of wood adhesives at home and abroad usually adopts a single-pot batch method of production, and the control o...

AI Technical Summary

Problems solved by technology

The control of the reaction end point is realized by adjusting the pH value and lowering the reaction temperature, so the reaction process and production process are more complicated

The production of wood adhesives at home and abroad usually adopts a single-pot batch method of production, and the control of chemical reactions and production processes is relatively difficult; especially in my country, process parameters and technical indicators are usually controlled manually, mostly by Manual sampling is used to detect the viscosity to judge the reaction end point. Manual sampling detection often lags behind the real reaction process, and the detection results are easily affected by human factors, which greatly affect the product quality.

On the whole, the quality stability of wood adhesive products is poor, and its output needs to be further improved

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