search.noResults

search.searching

saml.title
dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
BOILERS, pUmpS & vALvES


Sweet SucceSS for proceSS control reliability


the reliability of components in a process control environment is key to avoiding unplanned downtime for repairs. for an east london sugar refinery, repeated replacement of a control valve and a poor mean time between failures (Mtbf) led the company to seek an alternative that could cope in a challenging washwater application. bürkert’s eleMent range of process control valves was able to deliver the solution.


end of the process, to remove sugar from the cane, a mixture of sugar crystals and molasses, known as massecuite, is delivered to a number of centrifuges, which spin at speeds up to 1,200 rpm. This process separates the sugar crystals, which are then washed and dried, producing granulated sugar.


T


he refinery in East London is the largest sugar refinery in Europe with a capacity of 1.2 million tonnes per year. Towards the


challenging conditionS The centrifuges can process over 20 loads per hour with each batch needing to be washed before it is dried and transferred to the storage silos. The washwater used during this process is controlled by a ball valve with a spring return actuator and an electrical position indicator. Each control valve is required to perform


hundreds of thousands of operations per year and is working with water at 90°C as well as a pressure of six bar. This arduous environment applies to all centrifuges that are in operation at the Refinery. However, after several years in operation, the valves had a poor reliability record and were the cause of leaks, which resulted in increased maintenance costs. As a result, research was carried out to find an


alternative design of valve that could handle the repetitive operation as well as the working environment and provide more reliable service. This led to the Bürkert Type 2100 angle seat valve and the Type 8697 pneumatic control unit, both of which are designed for hygienic applications.


Bürkert’s Type 2100 angle seat valve and Type 8697 pneumatic control unit were specified, both of which are designed for hygienic applications


32 JUNE 2021 | FACTORY&HANDLINGSOLUTIONS


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58