Automatic gas-liquid separation device and method for chlorine dioxide generator under high negative pressure environment

Abstract

The invention discloses an automatic gas-liquid separation device and method for a chlorine dioxide generator under a high negative pressure environment. The device comprises a shell, an automatic gas-liquid separation system and a residual liquid exhaust system, wherein the automatic gas-liquid separation system comprises a gas-liquid mixture inlet, an internal insertion pipe, a gas outlet, a separation box, a liquid collection box, a floater, a linkage rod, a sealing cone and a liquid outlet pipe, and the residual exhaust system comprises a residual liquid valve, a check valve, a water jet and a power water valve; the gas-liquid mixture of chlorine dioxide generated by the generator, chlorine and a reaction liquid enters the separation tank through the mixture inlet and the internal insertion pipe; chlorine dioxide and chlorine are output through the gas outlet; the reaction liquid enters the liquid collection tank; the liquid level gradually rises; the floater floats to drive the sealing cone to leave the opening of the liquid outlet pipe; a solution enters the liquid outlet pipe and is discharged by virtue of negative pressure. According to the automatic gas-liquid separation device, gas-liquid separation can be automatically carried out so as to achieve the gas-liquid separation under high negative pressure environment; meanwhile, the difficulty that chlorine dioxide is limited by acidity when applied to the fields of bleaching and the like is solved.

Description

technical field [0001] The invention relates to a device for automatic gas-liquid separation in a high negative pressure environment of a chlorine dioxide generator and an automatic gas-liquid separation method using the device. Background technique [0002] Chlorine dioxide generators have been developed for more than 20 years. In application, water ejector negative pressure suction is generally used, and chlorine dioxide gas and residual liquid after reaction are added to the treated water body for sterilization and disinfection. For water bodies such as tap water and secondary water supply, adding gas and liquid together will bring the unreacted residue of raw materials into the water body, resulting in excessive disinfection by-product chlorate in the water body; for applications with special requirements, such as refined cotton, Paper bleaching and advanced oxidation of chemical raw materials require a disinfectant with a high concentration of chlorine dioxide and a neu...

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Problems solved by technology

[0003] At present, there are many types of gas-liquid separation devices used in chlorine dioxide generators on the market, with different technologies and forms. However, these gas-liquid separators are only suitable for gas-liquid separation in low negative pressure environments, that is, in Chlorine dioxide generator under aeration conditions, negative pressure around -10kpa

It is not suitable for the high negative pressure sodium chlorate sulfuric acid chlorine dioxide generator without aeration, large output and high chlorine dioxide concentration. The negative pressure of this generator can reach above -30kpa, and the existing gas-liquid separation The device cannot be used normally in such a high negative pressure environment, and the residual liquid cannot be discharged by itself after separation, which largely limits the promotion and application of chlorine dioxide in the fields of bleaching and advanced oxidation

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