Desuperheater with accurate control
September 2013
Valves, Actuators & Pump Control
PSV Mitech’s locally designed eSteam desuperheater is a low maintenance, low cost solution for cooling superheated steam to within a few degrees of setpoint. By simply changing the size of nozzle, the standard unit covers a wide range of requirements. It is designed for steam with flow rates up to 100 t/h at temperatures up to 500°C and pressures to 40 bar(g). A water turndown of 20:1 is achieved by varying the number of nozzles in use and the proportion of the sample time that one of these is open. Typically, downstream steam temperature is cooled to within 2 to 5°C of the saturation temperature.
The eSteam desuperheater can be used with water up to 12 t/h with a water injection temperature up to 140°C at 20 to 40 bar(g) pressure. The nozzles are sized according to the required water flow rate needed for the given steam parameters. No additional control valves, steam assist or instrument air is required – only water, power and the position signal. The device, which may also be used as an attemperator, offers a high turndown and good controllability with no moving parts in the steam flow.
The custom designed microprocessor controller not only allows for smooth transitions across the turndown range, but also monitors the number of cycles completed by each solenoid and spreads the load across all five, thereby increasing the overall lifespan of the unit.
System components include nozzles, sparger, solenoid valves, manifold and controller enclosure. Temperature feedback is via the control room in the form of a 4 – 20 mA position signal to the desuperheater.
For more information contact Greg Walker, PSV Mitech, +27 (0)11 657 6000, [email protected], www.mitech.co.za
Further reading:
Developing solutions for SA’s wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps has a proud global legacy in the development of self-priming pump technology, which reflects decades of engineering innovation and application expertise. Building on this foundation, KSB’s AU series has extended the company’s self-priming expertise into screened wastewater handling, which meets the growing needs of municipal and industrial sectors worldwide.
Read more...
Helping to solve wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps and Valves is doubling its efforts to help government and municipalities find practical and technical solutions to the growing wastewater challenges gripping large parts of the country.
Read more...
Duplex valve improves continuous production at Gauteng manufacturing facility
Valves, Actuators & Pump Control
In a recent installation at a Gauteng-based manufacturer of household and personal care products, Allmech provided a tailored water treatment solution to ensure a consistent supply of soft water for steam generation, an essential element in the client’s 24/7 production cycle.
Read more...
Ultra-durable stainless steel submersible pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has launched a rugged stainless-steel submersible pump range designed for deep borehole use and other demanding freshwater and saline pumping applications.
Read more...
Industrial valve solutions
Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division supplies and supports an extensive range of components for fluid technology systems. These include valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.
Read more...
New wastewater pump for local municipalities and industries
Valves, Actuators & Pump Control
The latest wastewater pump from KSB Pumps and Valves is making waves in the industry due to a host of new features that provide users with an ultra-durable long service pump with fewer blockages and a lower maintenance requirement than traditional pumps.
Read more...
The critical role of check valves in fluid systems
Valves, Actuators & Pump Control
In fluid power systems, the performance and reliability of the entire operation often hinge on components that are small in size but significant in function. Among these, the check valve stands out as a fundamental yet frequently overlooked element.
Read more...
ENERGYValves expands operations
Valves, Actuators & Pump Control
ENERGYValves is expanding its operations with a new facility in Cape Town. The new premises will significantly enhance the company’s capacity to serve the Cape Town market and surrounding areas.
Read more...
Pumps lead the way with advanced technology
Valves, Actuators & Pump Control
The KSB GIW MDX pump has consistently represented a major leap forward in mill duty applications, with KSB relying on customer feedback to improving the design continuously.
Read more...
Wireless leak detection valve
Valves, Actuators & Pump Control
Designed to prevent water leakage by automatically shutting off the water supply when a leak is detected, the Runxin F104 wireless leak detection valve is one of the latest offerings from Allmech.
Read more...
printer friendly version