Cleaning control method for paper-making reconstituted tobacco leaching solution membrane separation equipment

Abstract

The invention discloses a cleaning control method for paper-making process reconstituted tobacco leaching liquid membrane separation equipment, which has the design concept that two cleaning modes which can be executed by a user decision are designed to realize daily flushing maintenance of the membrane separation equipment and deep cleaning after shutdown, specifically, the cleaning modes can be divided into a flushing mode and a soaking mode; the flushing mode mainly comprises the steps of executing a set clear water flushing process, and changing the set clear water flushing process into a chemical flushing process which is alternately implemented according to set links after the clear water flushing is carried out for a certain number of times; according to the soaking mode, a chemical solvent is mainly used for conducting soaking treatment for a long time, a centrifugal pump is used for conducting chemical washing in the soaking gap, the operation is easy and convenient, the cleaning effect can be effectively guaranteed, and meanwhile the problems of equipment damage, production stagnation and the like caused by manual misoperation, mistaken cleaning or untimely cleaning are solved.

Description

technical field [0001] The invention relates to the field of tobacco processing, in particular to a method for cleaning and controlling liquid membrane separation equipment for leaching reconstituted tobacco leaves by a papermaking method. Background technique [0002] During the production process of reconstituted tobacco leaves by the papermaking method, if the suspended solids and macromolecular substances in the leaching solution cannot be effectively removed, they will easily adhere and scale on the heat exchanger tubes during the subsequent evaporation and concentration process, resulting in heat transfer resistance Increased, increased loss of aroma substances, shortened cleaning cycle of evaporative concentration equipment, increased steam consumption, etc. Excessive macromolecular substances and suspended solids will also increase the viscosity of the concentrate, affect the stability of the coating rate, and cause quality problems such as poor product softness, eas...

AI Technical Summary

Problems solved by technology

However, the composition of the reconstituted tobacco leaf leaching solution is complex. After the silicon carbide ceramic membrane separation equipment has been in operation for a period of time, the surface of the membrane tube is covered by a scale layer, and the membrane flux and separation effect are greatly reduced, which seriously affects the continuous and stable operation of production.

[0004] At present, common silicon carbide ceramic membrane cleaning methods mainly include physical methods and chemical methods. However, due to the different scale components, the existing cleaning methods and cleaning agents are not suitable for papermaking reconstituted tobacco membrane separation equipment, and the cleaning effect is difficult. Compared with other industrial equipment, the membrane tube is more precise, and the cleaning steps are complicated, requiring cleaning operators to have a higher professional level. If there are more human interventions in each cleaning step, the probability of misoperation or improper operation will be higher. The stable operation of liquid extraction and membrane separation equipment and the whole line has brought huge hidden dangers

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