Stord Screw Cooker
The Stord Screw Cooker is indirectly heated. Depending on the size of the machine roughly 2/3 of the energy is from steam inside the rotor and 1/3 is from the steam jacket on the outside of the stator.
Pre-heating or “cooking” of fish is an important step in the fish meal process. The process breaks the fat deposits of the fish and makes it possible to separate fat from the material mechanically, before the drying process. The most common practice of cooking good raw material is to heat to 90°to 100 °C within a retention time of 15 to 20 minutes.
The Stord Screw Cooker is a reliable and energy efficient process. The screw shaped rotor turns slowly and speed control on the main drive is used to control the throughput of material. The simple and robust design reliably provides a high capacity and low maintenance costs.
Processing in the Stord Screw Cooker is a continuous process. Typically, material is fed from a hopper by screw conveyors or pumped through a feed pipe to the cooker inlet. The hot material falls by gravity from the cooker outlet in to a strainer or directly to a press for further processing.
The Stord Screw Cookers are offered in different sizes and configurations with heating surfaces from 7 to 200m’ equal to 1-50 To/h of raw material (guideline).
Each machine is configured to fit the requirements of the customer.
The design of the Stord Screw Cooker is adapted to the application and is offered with different materials. For general industry applications the cookers are made in high grade carbon steel or stainless steel.
The Stord Screw Cooker is heated by steam and may be designed for different pressures and different approbation regimes. For European onshore applications, the most common is 6 barg steam pressure and PED approbation. Ship installations are commonly certified with DNV III. Other certificates, such as ASME VIII or AS1210, are available upon request.
Different electrical specifications are available upon request. Typically 3x400V 50/60Hz with speed control.
All machines for the on-shore EEC market bear a CE mark.