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For the operation and maintenance of the wet electrostatic precipitator, strict management systems and operating procedures should be formulated. The equipment must be managed by full-time personnel, who should conduct regular inspections and record the operation status of the wet electrostatic precipitator. Operators need to record the operating parameters of the equipment every hour, including flue gas temperature, insulation chamber temperature, primary voltage, primary current, secondary voltage, secondary current, and the operation status of the fan, etc.

Operation and Maintenance of Wet Electrostatic Precipitators

The 8# calcium chloride flue gas treatment wet electrostatic precipitators produced by our company has started commissioning and is ready to be put into use.

The flue gas volume of this equipment is 50,000 m³/h, the flue gas temperature is ≤ 50℃, the flue gas does not contain flammable and explosive gases, the air flow direction is bottom-in and top-out type, the wet electrostatic precipitator body is independently installed on the steel frame, and the equipment operates under positive pressure.

Operation of Wet Electrostatic Demister for Calcium Chloride Flue Gas Treatment

This is already the fourth calcium chloride tail gas treatment equipment produced by our company for customers. Customers in need are welcome to call for consultation.

The bag dust collector of the flue gas pretreatment device for the yellow phosphorus tail gas 100t/h high-temperature and high-pressure gas-fired boiler (540℃, 9.8MPa) operates stably.

This device uses sodium carbonate (Na?CO?) as the flue gas treatment agent, and a bag dust collector is used for dust removal. The flue gas pretreatment device consists of four parts: a raw material bin, a feeding system, a mixing and drying system, and a bag dust collector. In this project, the content of sulfur, phosphorus and other acidic substances in the flue gas is relatively high. The flue gas pretreatment device needs to fully consider the corrosion problem caused by sulfur, phosphorus and other acidic substances. All flues in the flue gas pretreatment device are made of materials not lower than 2205 and 316L.

Stable operation of the bag dust collector in the pretreatment device for comprehensive utilization of yellow phosphorus tail gas

The flue gas pretreatment device consists of four parts: a raw material bin, a feeding system, a mixing and drying system, and a bag dust collector.

Boiler flue gas in cane sugar refineries is generally characterized by high moisture content and high dust density. For the treatment of such flue gas, the gritstone water film demisting technology can be adopted. It is a wet demisting process based on gritstone, configured as a "vertical/horizontal Venturi + cyclone water film/cyclone plate demister". This technology boasts advantages such as low investment, simple maintenance and long service life. Flue gas treated by this technology could basically meet the previous old emission standards; however, with the upgrading of emission requirements to the current new standards, this technology can no longer satisfy the existing compliance criteria.

At present, three technologies are worthy of exploration, namely bag-type demisting technology, electrostatic-bag hybrid demisting technology and wet electrostatic precipitator technology. Each of these three demisting technologies has distinct advantages: bag-type and electrostatic-bag hybrid demisting technologies feature high demisting efficiency, but they entail high operating costs and have a short service life. In contrast, wet electrostatic precipitator technology is highly practical and easy to operate, yet it needs to be combined with other technologies to exert its optimal performance. The better the water droplet atomization effect and the larger the dust particles, the more prominent the final treatment outcome will be.

Up-to-Standard Emission of Flue Gas in Sugar Refineries via Gritstone Water Film Demisting + Wet Electrostatic Precipitator

Performance Demonstration of Wet Electrostatic Precipitator for Boiler Flue Gas in Sugar Refineries

Tail Gas Monitoring Data from the Wet Electrostatic Precipitator Project for Tail Gas Treatment in Sugar Refineries

Tail Gas Monitoring Data from the Wet Electrostatic Precipitator Project for Tail Gas Treatment in Sugar Refineries

Recently, the sodium metabisulfite wet electrostatic precipitator installed and commissioned by our company has started commissioning. Below is a demonstration of the operation effect of sodium bicarbonate and calcium chloride tail gas treatment on a sunny day:

Operation effect of wet electrostatic precipitator for waste gas treatment in sodium bicarbonate production line on sunny days

Operation effect of wet electrostatic precipitator for calcium chloride waste gas treatment on sunny days

Installation of wet electrostatic precipitator for sodium bicarbonate exhaust gas treatment is in progress.

The wet electrostatic precipitator for baking soda tail gas treatment has been installed and put into operation.

Operating status of the wet electrostatic precipitator

The wet electrostatic precipitator equipment for the exhaust gas upgrading and renovation of the calcium chloride granulation production line has been manufactured, installed, and has officially entered the commissioning and operation phase. The flue gas flow rate of the electrostatic demister in this production line is 40000 m³/h, the inlet flue gas temperature is less than 60℃, and the airflow direction is bottom-in and top-out.

Operation of Wet Electrostatic Precipitator in Calcium Chloride Granulation Production Line

The main process route adopted by the wet electrostatic precipitator  for tail gas treatment in hazardous waste projects: quenching tower + two-stage wet scrubbing for acid removal + wet electrostatic precipitator + induced draft fan + chimney. Different technical routes may be adopted for different projects in different regions.

Operation of Wet Electrostatic Precipitator for Flue Gas Treatment in Hazardous Waste Incineration Project

The production and manufacturing of bag dust collectors for yellow phosphorus tail gas recovery in Guizhou is underway

Guizhou yellow phosphorus tail gas recovery bag dust collectors shipped

Construction site of bag dust collectors

The dust removal system of the bag dust collector is composed of the dust collector body, ash hopper system, clean gas plenum, filter bag assembly, ash cleaning system, staircase system, compressed air pipeline and connectors, inlet and outlet flues, as well as ash discharge device.

This wet electrostatic precipitator processes saturated wet flue gas from yellow phosphorus quenched slag tail gas, with a flue gas volume of 60Wm3/h. The normal flue gas temperature is 50 to 55℃, and the maximum temperature is no more than 80℃. The average gas velocity of the flue gas is 2.12m/s, and the pH is between 1 and 5. It contains a small amount of acidic substances such as fluoride, sulfur, and phosphorus, and has strong corrosiveness.

Operation of the Wet Electrostatic Precipitator for Panzhihua Phosphorus Chemical Slag