Task
Increasing the capacity of a rapeseed oil mill in Kiel from 300 t/d to 500 t/d by introducing three-step pressing through installation of Harburg-Freudenberger's Screw Press SP 340.

Preparation
The oil mill in Kiel was constructed in 1990 for a capacity of 300 metric tons of rapeseed per day respectively 100.000 tons per year. It was designed to produce oil without use of solvents, which implicated a rather lower output but generated a better quality of oil. Up to the introduction of the new system, pressing was done involving a two-step process. The press cake produced during the first step (approx. 70 to 75 % mechanically separated oil) was pressed a second time involving thermal conditioning at 110°C leading to a press cake for the feed mill industry and an overall oil yield of approx. 37,5%. To guarantee profitability growth of the oil mill by modernisation and automation measures, the plant was technically overhauled and its capacity increased during the years 2005 and 2006. Its goal was to enable the cold pressing of rapeseed through-out the complete process. This meant introducing a three-step process.

Contractor
Harburg-Freudenberger Maschinenbau GmbH features a 150-year old history of constructing machines and equipment for the supply of oil manufacturing plants. Harburg-Freudenberger is a subsidiary of L. Possehl & Co. mbH. The Possehl Group posted a turnover of € 1,452 billion in 2006. Harburg-Freudenberger's three company divisions of rubber mixing technology, caoutchouc technology, and edible oil technology, are acknowledged technology leaders in the rubber processing and tire industry and the edible oil and food industry. Harburg-Freudenberger's machines and systems enjoy a high reputation, actually being global leaders in the field of screw press technology. More than 2,000 industrial scale presses give proof of the expertise in designing and building continuously operated pressing plants to process oilseeds including key components like cracking and flaking mills for mechanical seed preparation, conditioners for heating and drying seeds (thermal seed preparation), driers for animal raw materials, screw presses for mechanical oil and fat separation, and screw presses for dewatering of other special products.

Internet
http://www.harburg-freudenberger.com