Spiral liquid inlet split venturi decontamination device

Abstract

The invention provides a spiral liquid inlet split type venturi decontaminating device. The decontaminating device comprises a venturi outer tube and an inner spray tube, wherein the venturi outer tube is formed by sequentially connecting a straight outer tube, a contracted outer tube and a diffusion tube; the inner spray tube is formed by connecting a straight inner tube and a contracted inner tube; the straight inner tube is positioned inside the straight outer tube; the contracted inner tube is positioned inside the contracted outer tube; a plurality of inner baffles are arranged on the outer wall of the straight inner tube, to support an annular liquid inlet cavity between the inner spray tube and the venturi outer tube; a spiral flow deflector is arranged on the outer wall of the contracted inner tube. The decontaminating device provided by the invention has the advantages of simple structure, convenient disassembly and assembly, and convenient cleaning and replacement; the methodof liquid feeding is improved, the adherence effect of annular space liquid feeding is solved, a gas phase and a liquid phase are evenly mixed, the absorption efficiency is improved, and the method is suitable for emergency treatment of hazardous chemicals leakage accidents.

Description

technical field [0001] The invention relates to the field of emergency treatment equipment for hazardous chemical accidents, in particular to a spiral liquid-feeding split venturi decontamination device. Background technique [0002] In hazardous chemical leakage accidents, hazardous steam and leaked liquid exist and interact with each other. The core of the absorption device used for waste gas treatment is to use absorbents to contact and mass transfer waste gas to achieve the purpose of removing waste gas. There are many kinds of absorption devices, but their basic principles are mostly the same. They all contact and transfer mass through the absorbent and the exhaust gas. At the same time, the transfer process of the hazardous chemical components in the exhaust gas from the gas phase to the liquid phase occurs. For the physical process, only the phase change occurs. , and the chemical absorption process will be accompanied by a qualitative change process. Venturi scrubbe...

AI Technical Summary

Problems solved by technology

However, due to the fact that the processing function of the Venturi scrubber is greatly affected by the structure of the device, and the gas-liquid mixing is uneven, its use in the field of waste gas treatment of hazardous chemicals in emergency conditions is limited. The specific reasons include: (1) During the emergency disposal of hazardous chemicals The processing device is required to be simple and efficient, and the device is easy to disassemble and easy to clean and replace in the actual process; (2) The gas phase and liquid phase in the scrubber are mixed unevenly, resulting in poor absorption effect and cannot be quickly applied to emergency places

[0003] The Chinese patent literature with the notification number CN103566683B proposes a split self-priming Venturi tube scrubber, which mainly consists of an outer sleeve composed of a constriction section and a diffusion section, and also includes a conical independent constriction section, and a conical independent constriction section and an outer sleeve The constriction section of the tube has the same conical structure, the conical independent constriction section is set in the constriction section of the outer casing, and the conical independent constriction section and the constriction section of the outer casing are connected by the flanges at the respective inlet ports and the two A liquid circulation channel is formed between them, and the split structure is better realized by flange connection. However, when the liquid enters the Venturi diffusion tube under the action of the static pressure difference, there will be a wall-attached flow phenomenon, which cannot be achieved in terms of gas-liquid mixing. ideal effect

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