LRP in Power plant
As a leader in vacuum technology, today we have grown within the power industry from pioneering work in developing equipment for the early power stations, to the supply of sophisticated vacuum systems for thermal, nuclear and even solar-powered power plants.
Applications
Condenser Air Extraction
Our self-contained condenser exhauster packages in steam cycle plants efficiently remove inward air leakage from the condenser. The effect is to provide lower turbine backpressure, improve heat rates and reduce generating costs. The packages consist of a liquid ring vacuum pump (either a two-stage vacuum pump, or a single stage vacuum pump with air ejector), air-liquid discharge separator, heat exchanger and associated controls.
Standard packages for holding and hogging
Designed to meet HEI specifications
Local service and site commissioning support
Condenser exhauster systems assure maximum power availability
Two stage liquid ring vacuum pump
Single stage vacuum pump with air ejector
Other Applications
Flue Gas Desulphurization
Flue Gas Desulphurization systems are a common feature on modern coal fired power plants.
Gypsum is a by product of the process which is produced at the outlet of a scrubber. Liquid ring pumps are used to provide vacuum on the dewatering of the gypsum on a vacuum filter, usually belt or rotary drum type.
The liquid ring pump, typically a large single stage design, is selected based upon the surface area of the vacuum filter.
Water box priming
Water box priming serves two functions: to create a siphon effect reducing the amount of power required to start the main cooling water pumps; and to ensure maximum condenser cooling efficiency by preventing accumulation of air in the upper parts of the cooling tube bundle.
The ability to handle wet gases without any detrimental effect makes liquid ring vacuum pumps ideal for condenser waterbox priming applications. The pumps are used initially to carry out priming of the main condenser water boxes and CW pump; once this is complete they are used to maintain vacuum in the water box at the required level.
Fly Ash Handing
Ash from the combustion process is captured in the Electrostatic Precipitator; the collected ash is transported by a vacuum conveying system to the storage facility or loading silo.
Liquid ring pumps offer a robust solution for this application often utilising stainless steel impellers.