Continuous technological method for multi-stage circular reaction of catalytic ozonation

Abstract

A continuous technological method for a multi-stage circular reaction of catalytic ozonation is applicable to the field of chemical oxidation using ozone as an oxidant and water treatment. The continuous technological method has the functions of multi-stage utilization through circular ozone contact and an enhanced technological reaction, overcomes the shortcomings of low efficiency, large equipment size, unsuitability for large-scale automatic production and the like of a bubbling reactor in the current ozone technology, and can achieve the effects of lowering the ozone consumption and savingthe equipment investment while continuous automatic production is met. In the continuous technological method, catalytic ozonation jet-type heterogeneous isothermal continuous reactor is used as coreequipment which is jointed with a feed pump, a discharge pump, an induced draft fan and a plurality of instrument self-adjusting control systems. According to different technological process requirements, single or multiple reactors are set. Circulation of ozone is achieved through a venturi jet in the reactor, and the multi-stage reaction is achieved through serial operation of the multiple reactors.

Description

[0001] Technical field [0002] The invention relates to an ozone catalytic oxidation multi-stage cycle reaction continuous process method, which is suitable for industrial application in the fields of chemical oxidation and water quality treatment using ozone as an oxidant, and in the production process of waste mineral oil oxidation regeneration and sewage oxidation treatment process, It has strong practicality. [0003] technical background [0004] As a strong oxidizing agent, ozone has received new attention and has been used more and more in large-scale industrial fields. [0005] Ozone is a strong oxidizing agent second only to fluorine, and its reaction activation energy is very low. The reaction with many substances generally does not require initiation conditions and can be carried out under normal conditions. [0006] Ozone is an unstable gas that easily decomposes into oxygen. The half-life of ozone in air at room temperature is about 20-50 minutes, and about half...

AI Technical Summary

Problems solved by technology

[0022] 1. The transient bubbling contact method determines that the utilization rate of ozone is limited. Once the ozone that has not completed mass transfer and exchange escapes from the liquid phase, it cannot be used, but can only be discharged as tail gas. This not only forms ozone waste, but also increased the burden of exhaust gas environmental protection, resulting in double losses

[0023] 2. The efficiency of the reactor based on the principle of bubbling contact is low, the equipment investment of the continuous process method is large, and the utilization rate of ozone is low, while the batch process method is not suitable for large-scale industrial production, and the contradiction between the two is not easy to coordinate

Images