Method and system for automatically controlling recycling of catalyst for producing acrylamide

Abstract

The invention discloses a method and a system for automatically controlling the recycling of a catalyst for producing acrylamide. The method comprises the following steps of: pumping waste catalyst primary pulp to a filtering system through a primary pulp feeding system, separating the catalyst in the primary pulp which is filtered by the filtering system, entering a recycling system, and thus obtaining a primary pulp filtered catalyst; repeatedly washing the filtering system, then pumping the obtained primary pulp filtered catalyst to the filtering system again through a pipeline, starting awashing system, injecting desalted water into the filtering system at the same time, filtering through the filtering system to obtain a recyclable filtered catalyst, and entering the recycling system; and washing the filtering system again through the washing system, and discharging materials obtained after the washing to a wastewater system to finish the whole catalyst recycling process. By a combined control system, the feeding, filtering, washing, refiltering and recycling processes of the primary pulp are sequentially controlled and finished, the target control, the automatic control and the stabilization control over the recycling of the catalyst for producing the acrylamide are realized, operation steps are simplified, and labor intensity is reduced.

Description

technical field [0001] The invention relates to an automatic control method and system for producing acrylamide catalyst recovery. Background technique [0002] At present, the recovery of acrylamide catalysts in my country usually adopts centrifugal separation, direct filtration and other methods, and the control methods are mainly manual control, lacking comprehensive, accurate and advanced control methods and methods. Due to the lack of advanced catalyst recycling methods in the production process of acrylamide, the current process of acrylamide production in my country usually adopts a direct waste treatment method, which not only causes waste of catalysts for the production of acrylamide, but also wastes the production of acrylamide. The catalyst contains a large amount of substances such as acrylamide and acrylonitrile, which not only causes low product yield in the production process, but also causes serious environmental pollution. Contents of the invention [0003...

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Problems solved by technology

[0002] At present, the recovery of acrylamide catalysts in my country usually adopts methods such as centrifugal separation and direct filtration, and the control methods are mainly manual control, lacking comprehensive, accurate and advanced control methods and methods

Due to the lack of advanced catalyst recycling methods in the production process of acrylamide, the current process of acrylamide production in my country usually adopts a direct waste treatment method, which not only causes waste of catalysts for the production of acrylamide, but also wastes the production of acrylamide. The catalyst contains a large amount of acrylamide, acrylonitrile and other substances, which not only causes low product yield in the production process, but also causes serious environmental pollution

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