Cooling & Quenching
Gas conditioning tower (GCT)
Process cooling and Zero Liquid Discharge (ZLD) with Gas Conditioning Towers (GCT)
Gas conditioning towers (GCT) are used in industrial applications to cool gases upstream of electrostatic precipitators / bag filters for effective temperature control, gas volume reduction and humidification by the evaporation of water. GEA provide the two available atomization technologies utilized in the evaporative cooling process are hydraulic atomization and twin-fluid atomization. Key parameter for GCT sizing is in addition to the amount of flue gas, inlet and outlet temperature mainly the attainable droplet size and the associated energy consumption.
Key features:
- Low maintenance and low maintenance costs
- Compact design
- Cleaning function available only after a specific deadtime
Working Principle
Working Principle of Gas Conditioning Towers
Hydraulic atomization with single fluid, spillback nozzles with larger droplet sizes provide less energy consumption but require a larger casing design and more purity on the cooling water. The amount of liquid injected is adjusted via a control valve in the spillback line, whereby part of the flow is taken from the inlet flow rate and returned to the buffer tank.
Twin fluid technology utilizes compressed air or steam to atomize the water into droplets via a spray injection nozzle/lance as well. The water and compressed air (the two fluids) combine inside the nozzle and exit into the flue gas stream. Smaller droplet sizes lead to smaller casing design and even wastewater can be used for Zero Liquid Discharge (ZLD) where recovered waste heat supports efficient evaporation of water for compliance with wastewater discharge limits.
The GCT casing structural design covers full under pressure of ID fan and is providing adequate gas distribution with deflection-, guide- and perforated sheets in the inlet area.
The transport of dust from the housing is taken into account for possible malfunctions with a reversible paddle screw and motor-driven double pendulum flaps on both sides.
Downloads
Related Products
Hot gas quench systems
Vertically standing scrubbing tube with gas inlet from above and spray nozzles arranged radially on the tube below the gas inlet.
Packed Cooling Tower (Column Cooler)
Vertical tube with a gas inlet from underneath and a radial task of the scrubbing liquid from above over the whole tube cross section.
Quench cooler
Rapid cooling of quenching of gas streams is used in a number of essential applications in the process industries. The selection and sizing of spray nozzles are the most critical decisions in the system design. GEA quench tower design consists of an open vessel in which liquid is sprayed to contact the gas. The gas enters the bottom of the tower...
GEA Insights
New food tipping point
Alternative proteins are promising – yet still expensive to produce. The usual response is that scaling up will solve this issue. But what if the solution was really about getting better, not just bigger? From more efficient, high-yield processes to upcycling waste heat, engineers are reshaping how we grow food.
A safer way to produce cancer treatments
As anti-cancer drugs become more powerful and complex, GEA is redefining how to safely freeze-dry these life-saving treatments.
Celebrating digital transformation at GEA
Digital transformation at GEA means more than new tools – it’s about bold ideas, customer impact and a culture that values and drives innovation. Meet this year’s GEA Better World Awards Innovation & Digitalization winners who were celebrated for solutions which are shaping the future of our business.
