Water Cooled Vibrating Grate

DP’s Water Cooled Vibrating Grate (WCVG) is a grate technology and component integral to the DP boiler product range. Developed specifically for the high efficiency firing of biomass at the lowest possible emission rates, the Water Cooled Vibrating Grate is a highly reliable and proven technology which has been refined and optimized by DP through many years of operational experience and pioneering modifications. It has been fully integrated with DP’s patented combustion system to produce the most efficient High Pressure, High Temperature straw-fired boiler technology in the world.

The Water Cooled Vibrating Grate is a well-established grate system that provides an intermittent vibration for conveying and distributing fuel evenly, and continuous discharge of fuel ash. It is particularly suited to biomass fuels and has a very efficient carbon burnout rate, which allows an increase in over-fire air, and a subsequent reduction in the amount of thermal NOx created. It has few moving parts, and therefore has low maintenance requirements.

Heat exchanger

DP CleanTech’s heat exchanger product line is developed for a broad scope of application within the area of energy plants and industrial use. The design is developed according to a flexible modular system which is easily assembled and adapted to find the optimum technical and financial solution. The heat exchangers are specially calculated and dimensioned according to your requirements.

Feedwater preheater ECO

By adding a feedwater preheater to boiler installations the consumption of fuel can be reduced considerably. The return water to the boiler is led through the feedwater heater in order to achieve the optimum yield by using excess heat from the flue gas.

Condensing heat exchanger for gas boilers/engines/turbines

By using a condensing heat exchanger it is possible to run at full-condensing operation with a cooling below the flue gas dewpoint.

Air preheater steam/water

The heat exchanger can be used as an air preheater if an increase in temperature for the process air is desired. The coolant can be warm water and condensing steam. This is often used for preheating combustion air, heating process air and for drying chambers.

Fly ash treatment

Ash Hopper

The DP optimized ash hopper has been developed to minimize pressure loss whist enabling a larger volume for ash collection.  The improved reliability of the bag filter system and fly ash handling has been shown to reduce unplanned shutdowns and this has been demonstrated successfully in many projects. 

Fly Ash conveying

Blowers and piping

DP provides 3 approaches to optimize fly ash conveying depending on the nature of the fuel and the ash it produces.   Based on their extensive experience, DP engineers are able to recommend the most appropriate approach for specific fuel types in order to reduce the  wearing of equipment and the subsequent maintenance and replacement costs. 

Ash handling optimization

Bag Ash filter

A high performance bag filter is an easy step toward reducing pressure loss. The optimized design has been deployed in numerous DP projects and is compatible for all DP equipment.   

Cyclone / Spark Dust separator

The handling of dust sparks has been improved through a simplified structure which is lower in weight.  The optimized cyclone and dust spark separator minimizes pressure loss and reduces power consumption.  The integrity of the liner is also enhanced, reducing maintenance costs.