Power generation in ORC-systems

Biodiesel is made from vegetable oils, such as soybean, sunflower or palm oil or from animal fats, by a chemical reaction with methanol. Heat exchangers are used in various process stages for pre-heating, glycerine heater and cooler, and in the methanol distillation, as economizers.

All welded construction of the XPS - Plate & Shell heat exchangers is recommended for high temperatures or pressures, or if chemical attack of ingredients excludes the use of plate and frame heat exchangers with gaskets. XPS units are currently operating as methanol - condenseors or feed / effluent heat exchanger.

Heat recovery from exhaust gases

Exhaust or exhaust air heat exchangers withdraw energy from the exhaust stream, which can be used for preheating or heating in other processes.

XPT - Thermo Plate heat exchangers transfer the heat from the exhaust stream to running up air (Type: XPT - gas / gas) or to a liquid circuit (Type: XPT - Process Therm). The heat exchangers can be integrated directly into the exhaust stream, can be adapted to the dimensions, also the number and arrangement of heat transfer surfaces can readily be fit to existing plants.

Heat recovery from waste water

Wastewater heat exchangers transfer heat from hot wastewater to heat cold freshwater. This reduces the energy required to preheat the incoming water. For the function of biological sewage treatment plants, the wastewater temperature can be limited and regulatory compliance can be ensured to the maximum initiation temperatures. XPT - Thermo Plate heat exchangers can be manufactured with ring-shaped heat transfer surfaces. A rotating brush system keeps the transfer surfaces free of biological deposits. The units are accessible from above and sedimentary deposits can be removed through openings in the bottom.

Heat recovery from flash steam

Flash steam condensers condense exhaust vapour arising in steam systems, when condensate is led to atmospheric condensate return tanks, steam is flashed off from the hot condensate. The latent heat from the exhaust vapors are condensed and the heat recovered for other users, e.g. preheating of fresh water for feedwater deaerators.

XPS - Plate & Shell heat exchangers are effective condensers even at low steam pressures (under vacuum). Corresponding to the low vapor density and the resulting high flow velocities of steam the steam inlet nozzle sizes can be big and the condensate outlet nozzles can be made small.

Heat recovery from process heat

In production plants, individual production stages often require the cooling of products. The heat extracted from products can be fed to other consumers for an optimal energy utilization of the production plant.

XPS - Plate & Shell heat exchanger can transfer the heat from the liquid or gaseous products to other products or into auxiliary systems. If the energy is of a high enough quality, valuble low-pressure steam can be generated with the waste heat. When several production trains are in parallel, the coolers can be grouped into modules.