Electrostatic water mist recovery system for circulating water cooling tower

Abstract

The invention discloses an electrostatic water mist recovery system for a circulating water cooling tower. The electrostatic water mist recovery system comprises a water collection barrel, a dischargeelectrode and a grounding electrode. The water collection barrel is of a barrel-shaped structure without a top and a bottom. The bottom of the water collection barrel refers to an airflow inlet end,and the discharge electrode is a metal rod or a metal wire. The discharge electrode end is located at the central axis position inside the water collection barrel and points to the airflow inlet end.The grounding electrode is arranged on the outer side of the airflow inlet end and is electrically insulated from the water collection barrel. The traditional collision theory and the electrostatic water collection theory are combined, gas is ionized by utilizing an electrostatic field generated by high voltage, electron collapse or ion collapse is generated, and fog drops are driven to the wall surface after being charged and are condensed into water drops after collision. The novel high-voltage electrostatic water mist collecting device is simple in structure, low in weight, high in water vapor collecting rate and stable in operation. The investment and operation cost is low, and the economy is good.

Description

technical field [0001] The invention relates to the field of high-voltage electrostatic water mist recovery, in particular to the recovery of water mist above a circulating water cooling tower. Background technique [0002] In petrochemical, thermal power generation, papermaking, metallurgy and other fields, circulating cooling water systems are ubiquitous, and cooling towers are important devices in circulating water systems, which cool circulating water through heat exchange between water and air to realize the circulation of cooling water use. In this process, the loss due to water evaporation accounts for about 80% of the total water replenishment; a large amount of humid air is discharged into the atmosphere, which not only leads to waste of water resources, but also causes many environmental problems. Therefore, the recovery of water vapor in cooling towers is of great significance to water saving and air quality improvement. At present, the conventional method is to...

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Problems solved by technology

At present, the conventional method is to install a water stop above the cooling tower, such as a multi-layer metal grid, but it can only block a small part of the water vapor loss, and there are problems such as obstructing the airflow channel and affecting heat transfer.

The reported electrostatic method of water collection imitates the electrostatic precipitator, that is, directly connects metal plates and other conductors as the water collection plate to the output ground of the power supply, but the device has a working current density when dealing with moisture such as water vapor. Large, unstable operation, easy power failure, high energy consumption, and low water collection rate; in addition, the metal cylinder and metal electrode materials are prone to corrosion during long-term operation, and due to the high density of the metal cylinder, the load-bearing capacity of the cooling tower may exceed the limit, etc. structural issues

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