Fish Meal and Fish Oil

Transcription

1 E n g i n e e r i n g a n d P r o c e s s T e c h n o l o g y f o r Fish Meal and Fish Oil

2 3 Haarslev Industries history within the fish meal and oil industry goes back many decades in time. Thus we have gained vast experience and extensive know-how in fish meal processing that enables us to provide a unique equipment programme for turning raw materials into high grade products while taking energy effiency and the environmental protection into account. We have in-house engineering and manufacturing facilities in Europe, South America and Asia. We are the preferred supplier in major fish meal producing countries and represented world-wide through our own locally operating staff and agent network. Haarslev Industries manufactures processing equipment to customers in the meat, pet food, fish, oil, environmental and biofuel industries world-wide. Plant durability, reliability and excellent service are keywords for our supplies, whether it is a single piece of equipment or a complete turnkey plant. Our wide range of equipment, all designed for specific applications, form an ideal basis to design and optimise fish meal plants as well as to upgrade existing plants. Fish Meal and Fish Oil Although fish meal processing generally follows the same principle, the process requirements vary from one area to another and from one plant to another. Freshness of the catch, type of fish, requirements for meal and oil quality and environmental issues dictate the need for individual plant solutions. We offer a full delivery programme to meet such challenges. Fish meal plants from Haarslev Industries operate all over the world. Our delivery programme ranges from small land-based or ship-based units and up to the largest fish meal plants in the world. Our plants are known for maximum energy efficiency, reliability, safety and compliance with local environmental standards.

3 Fish Meal and Oil 4 5 High-grade fish meal sells at high market prices because this type of meal has shown significant advantages in aquaculture and animal breeding. This is difficult to replace with proteins of other origin. Haarslev Industries develops special cooking and drying equipment, which limits the exposure of the fish to high temperatures. The result is a better preservation of essential amino acids and that digestibility remains as high as possible. Our plant design focuses on optimum utilisation of both raw materials and energy. Fish Processing Whether a plant is processing whole fish or fish by-products, the first step is the cooking process. Haarslev Industries cookers are indirectly steam heated. After cooking, the fish passes through a strainer, and a large amount of liquid is drained off before the solid material proceeds to mechanical dewatering in the twin screw press.

4 Process Equipment 6 7 Twin Screw Press Mechanical dewatering with the twin screw press is very cost efficient and adds energy savings to the overall fish meal production. The twin screw press has been optimised to ensure that the press cake always has the best possible quality. The twin screw press is of a very robust and sturdy design, which ensures high cake dryness at low rotational speed on the screws. Liquid from the strainer and the press is collected for further separation into oil and stick water. The latter is fed into an evaporator, which concentrates the remaining proteins by utilising waste heat from steam dryers. The concentrate is now added to the press cake and all material is dried. This method ensures that almost all valuable proteins are utilised and that meal yield and quality increase. DrYers Our dryer programme for the fish meal industry is the largest in the market. It ranges from a number of different designs of contact disc dryers, indirectly steam heated for both atmospheric and vacuum operation, to a selection of indirectly and directly heated hot-air dryers available for the production of special meals with special characteristics. Moreover, Haarslev Industries has specialised in combining different dryer models, which enables the production of special meal qualities at minimum costs. The complete Haarslev dryer programme is backed by comprehensive engineering and innovative activities, allowing us to provide tailor-made drying solutions for special needs. Evaporators Haarslev Industries evaporators increase the plant yields and reduce the overall energy consumption while minimising the environmental impact. Compact Plants Haarslev Industries also supplies compact fish meal plants with all machines mounted as one unit. This includes cooker, strainer, twin screw press and dryer. Separately, an oil recovery system and an evaporator can be installed. Our compact plants are pre-assembled and ready to install either on board floating factories or ashore for treatment of by-products from fish processing. Proteins in the liquid from the strainer system and the twin screw press account for up to 30% of the total fish meal yield. After separation of the oil, the evaporator concentrates the stick water making it possible to exploit the suspended and dissolved proteins. By adding the evaporator concentrate to the fish meal you get an end product containing all the nutrients available in the raw fish. This maxi mises the plant yield and solves an environmental challenge as well. The Haarslev evaporators can utilise waste heat from the steam dryers and thereby make the overall fish meal processing highly energy efficient.

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