Novel swirl dispersing device

Abstract

The invention relates to a novel swirl dispersing device which mainly includes a rotating spray nozzle, a pump, a container and pipelines. Energy in transmission processes, which is not concerned up to now, are successfully applied in various reaction processes and mass and heat transmission processes intelligently. Rotation is generated by means of kinetic energy of system input or circulating materials and a pressure gradient is formed through a rapid change of a gas temperature or / and a volume change due to absorption. A tornado-like effect can be automatically induced in a gas phase and a swirl-like flow is forcedly formed in a liquid phase so that a mixing effect which is better than that generated from mechanical stirring and a circulator, thereby significantly increasing a mass and heat transmission efficiency in various processes. The novel swirl dispersing device is an important innovation of devices in process intensification, is simple and practical, is low in cost, is energy-saving and high-efficient, has a long effective distance, is good in the effects of mass and heat transmission and dispersion and separation, is wide in application and is strong in universality. The novel swirl dispersing device can solve uniform mass and heat transmission in a gas-phase system, a liquid-phase system, a gas-liquid system, a gas-solid system and a gas-liquid-solid system.

Description

technical field [0001] The invention relates to a swirling flow technology and a novel device capable of significantly improving the process intensification effect, and belongs to the field of chemical technology and mechanical equipment. Background technique [0002] The mass transfer heat transfer and reaction separation process in gas phase, liquid phase, gas-liquid two-phase, gas-solid two-phase and gas-liquid-solid three-phase system usually adopts the following mixing or separation forms: [0003] (1) Fully mixed tank reactor: It is often used in the process of mixing and dispersing liquid-liquid, gas-liquid, liquid-solid, and gas-liquid-solid systems with liquid as the continuous phase and gas or solid as the dispersed phase. The device is mainly composed of a motor that generates power, a reducer that adjusts the speed, a transmission stirring shaft and various forms of stirring paddles that promote the mixing of materials. The liquid can be added in stages or contin...

AI Technical Summary

Problems solved by technology

The traditional spray head is fixed and cannot form a liquid swirl, and the swirl effect generated by the introduction of gas is limited. Under the action of gravity and initial kinetic energy, the liquid quickly falls to the bottom of the tower or adheres to the wall of the tower, and there is a serious wall flow. and wall sticking phenomenon, so the gas-liquid contact time and opportunities are limited, and the mass and heat transfer effect needs to be improved

At present, equipment with larger diameter and height is used to ensure its effect. Therefore, the size of the equipment is too large, the processing capacity is not large, and the dust entrainment is serious, etc.

[0006] (4) Cooling heat exchange: the best form of heat exchange is direct contact heat exchange of materials, the heat exchange effect is subject to the contact area and contact time, spray bed and fluidized bed are the best forms of direct contact heat exchange, but the contact time The heat exchange efficiency needs to be improved; the slurry bed with built-in or external heat exchanger is an ideal heat exchange reaction equipment for indirect contact heat exchange, but it is limited by the heat transfer resistance of liquid film

Mechanical dust removal relies on mechanical force to remove dust particles from the airflow. It has a simple structure, low equipment and operating costs, but the dust removal efficiency is not high.

Electrostatic dust removal uses electrostatic attraction to separate dust particles from a large amount of airflow. It is characterized by small airflow resistance and a dust removal efficiency of over 99%. However, the investment is high, the size of the equipment is large, the heat loss is large, and waste heat recovery is difficult

The filter dust collector is to make the dust-laden air flow pass through the filter material to collect dust particles. The dust removal efficiency is generally 90% to 99%, but it is not suitable for dust-laden gases with high temperature. The above-mentioned dust removal methods need to be desulfurized separately. There is also secondary dust pollution during the transfer process

[0009] Water washing, dedusting and desulfurization is the most commonly used flue gas purification method. It is to make dust particles, sulfur dioxide, nitrogen oxides and other pollutants fully contact with liquid droplets or liquid films in the air or on the surface of the filler by spraying dilute alkaline water. Captured, the dust removal efficiency is 80% to 95%, and can remove harmful gases such as sulfur dioxide and nitrogen oxides at the same time, but due to large gas volume, small water volume, poor dispersion, short contact time, and unsatisfactory interphase contact effect, there is still purification effect Poor, high energy consumption and high disposal costs

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