Automatic control system for combined purification process of rectification residual liquid and process wastewater

Abstract

The invention discloses an automatic control system for the combined purification process of rectification residual liquid and process wastewater and belongs to the field of chemical engineering. Thesystem comprises five process procedure units, namely a dispersion kettle, a fluidized bed, a fixed bed, a gas-liquid separator and a neutral absorption unit for meeting automatic control requirements, and the automatic control system is designed. In the dispersion unit, an energy dynamic balance control system is designed by using a variable specific value control strategy, and a problem of adjusting feeding flow ratios of process wastewater to rectification residual liquids is solved; in the fluidized bed unit, an air feeding flow material dynamic balance control system and a jacket temperature intelligent control system are designed; in the fixed bed unit, air feeding flow material dynamic balance control system and a jacket temperature intelligent control system are designed; a temperature monitoring and pressure monitoring device is arranged in the gas-liquid separator unit; in the neutral absorption unit, automatic liquid level alarming control is designed. A device can be stablyoperated with low energy consumption, and purified waste liquids can meet national standards.

Description

technical field [0001] The invention relates to the intersecting field of a combined purification process of rectification raffinate and process wastewater and industrial automation technology, in particular to an automatic control system for the combined purification process of rectification raffinate and process wastewater. Background technique [0002] In the process of chemical production, it is inevitable to produce rectification raffinate containing polymers to form hazardous waste, and at the same time, a considerable amount of waste water containing organic impurities will be produced. How to make these wastes harmless and purify has become an important issue problems in the field that need to be solved. Due to the complex composition and low degradability of high-concentration organic wastewater, it is difficult to achieve satisfactory treatment results by conventional methods. The catalytic combustion method is one of the effective methods for treating organic was...

AI Technical Summary

Problems solved by technology

At present, the treatment of high-concentration organic waste gas and liquid at home and abroad is still in the independent purification stage, and most of the treatment devices are in the state of on-site monitoring and manual feeding. This method consumes a lot of energy, has low treatment efficiency and poor purification effect.

The joint purification process of waste water and waste gas and its automatic control system design are not involved

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