EXPERT OVERHAUL AND MAINTENANCE SERVICES
Our air preheater and gas/gas heater services include:
- On-site inspectionsand measurements
- Element supply
- Operational and maintenance advice
- Overhaul services andmanpower
- Performance enhancements and sealing options
We record “As found" and "As corrected" measurements in specially prepared quality control documents, so you can see the benefits of our services. Condition reports are produced for all heaters, and all documents are submitted for certification by oursite engineers.
You can choose our services as part of a maintenance contract or seasonal outages. Contact us for a quote on the inspection, repair, replacement, or adjustment of your air and gas preheater elements.
ELEMENT SUPPLY AND SCR MODIFICATIONS
Power System Services is a leading supplier of replacement elements for regenerative air and gas-gas heaters. Our elements are suitable for both Ljungstrom and Rothemuhle style rotary regenerative gas and air preheaters. Specific baskets designs target operational constraints including Ash content and Selective Catalytic Reduction (SCR) fouling, ensuring that pressure drops do not adversely affect boiler efficiency.
Our SCR units are designed to combat ammonia slip, which can lead to the formation of ammonium bisulphate, and accelerated corrosion of element plates. Our solutions help prevent blockages and surface heating caused by these issues.
ELEMENT PROFILE AND MATERIALS
We offer tooling for a wide range of element profiles. See the table below for a sample of the profiles we can provide. It should be noted that because profiles are produced uniquely using a combination of press and rolls, we are able to produce any pattern required and indeed new ones also.
|Element Thickness (mm)||0.50||0.70||0.80||1.00||1.20|
|2.5 Double Undulated||•||•|
|2.78 Double Undulated||•||•|
|9.5/3.0 Corrugated Undulated||•||•||•|
|9.5/3.0 Corrugated Herringbone||•||•||•|
|3.5 Notched Undulated||•||•|
|CU V75 Staggered||•||•||•|
|CU V75 Non-Staggered||•||•||•|
The table below provides you withinformation on the element materials we offer:
Carbon Steel to EN10130 FePo1 Am 0 or equal
Corten (Corrosion Resisting) Steel
|Vitreous Enamel Quality Steel:||to EN10209 DC03ED and DC04ED|
|Element Thickness:||0.50mm to 1.2mm|
|Element Depth:||Maximum Standard Depth 1,250mm|
|Certification:||to EN10204/3.1.B giving chemical & material details|
Please get in touch for further information on our full range of element profiles and materials.
PERFORMANCE AND SEALING ENHANCEMENTS
Our comprehensive service ensures the condition of your sealing systems is thoroughly checked, enabling us tooffertailoredadvice on improving thermal performance.
Air flow interference is introduced by our solutions, reducing oxygen leakage and improving boiler efficiency and the power efficiency of your fans.
PATENTED RADIAL AND BASKET SEALS
Our patented, customisable radial seals are easy to install, highly resistant to wear, and maximise efficiencies by reducing cross-sector leakage, and mitigating against sag or expansion of the preheater due to fluctuating temperatures. For units limited by fan capacities, free megawatts are achieved, by optimising air flow into the boiler whilst reducing fan power requirements.
All our basket sealsare designed to improve thermal performance by reducing element by-pass. They are easy to fit and do not hinder.Contact us >
AXIAL SEAL DOUBLINGS
The principle of doubling the number of Axial and radial seals is to introduce faster interferance for leakage air across sector plates. We have successfully introduced axial sealing at Drax, Ferrybridge, littlebrook and Didcot, as a secondary leakage measure to deal with high cross sector leakage.