Petrochemicals group Sasol is spending R8,4 billion to double its production of hard wax in South Africa. Sasol Wax manufactures markets and supplies wax, petroleum jellies and liquefied paraffin. According to Sasol, the project will result in increased production of medium waxes, mostly used in the candle industry in southern Africa, as well as liquefied paraffin, which is used in a variety of industrial applications. The expansion is taking place at the Sasolburg site.
Pumps and media
Valves from Schroeder will protect pumps supplied by Sulzer, KSB, SAM Engineering and Turbo Fluid. Media being pumped includes”
• Reaction water @ 35°C.
• Water @ 70°C.
• Boiler feed water @ 136°C.
• Hot oil @ 195°C.
• Hot oil @ 250°C.
• Condensate @ 60°C.
Schroeder automatic recirculation valves provide the protection
Modern pumps, because of their close tolerances, are sensitive to low flow conditions that may result in cavitation, unstable operation, noise problems and temperature increases, all of which can severely damage the pump. Therefore, minimum flow requirements must be maintained through a bypass recirculation (leak-off) valve to prevent costly pump damage. Schroeder has developed a series of such valves to provide automatic bypass.
The valves have a number of functions in the same housing. A built in disc type check valve uses the movement of the flow sensitive disc to control the bypass. This opens only when the main flow is reduced to less than the minimum flow requirement, thereby assuring positive pump protection at all times. No external power is required.
Plant and production benefits
Foster Wheeler managed the project. Its evaluation and final decision to award the order to Valve & Automation for Schroeder valves was based on the benefits to Sasol. Schroeder automatic recirculation valves ensure automatic venting of pumps when they are not in operation. Also, the motor and drive capacity can be significantly lower, which in turn has a positive effect on energy consumption and overall system costs. Benefits include:
• Automatic safeguarding of the required minimum flow rate of the pump.
• Integrated return valves in the main flow and minimum volume pipes.
• Lower energy consumption results in lower operating costs.
• Automatic venting of pumps not in operation.
• Cost efficient pump design (smaller size, no special version required for a low NPSHR value).
• Lower flow rate at the operating point as a result of automatic closure of the minimum volume pipe.
Compact valve position indicator Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson’s new TopWorx DVR Switchbox is an entry-level addition to the DV Series of valve position indicators. It combines a durable resin enclosure, compact size, and a patented cam design that provides a reliable valve position feedback for water and wastewater systems, food and beverage production lines, and industrial utilities.
Read more...Precision, control and performance in regulators and control valves Valve & Automation
Valves, Actuators & Pump Control
Cashco has long been a trusted name in industrial control solutions, offering a broad range of regulators and control valves designed to meet the rigorous demands of various industries. There are two key Cashco product lines, its regulators and the Ranger QCT control valve.
Read more...Advanced solutions for valves Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG delivers state-of-the-art valve solutions to diverse industries across Africa, in collaboration with InterApp, a global leader in the design and manufacture of high-quality valves.
Read more...ENERGYValves expands operations
Valves, Actuators & Pump Control
ENERGYValves is expanding its operations with a new facility in Cape Town. The new premises will significantly enhance the company’s capacity to serve the Cape Town market and surrounding areas.
Read more...Inspection system for leak detection in valves in hazardous areas Extech Safety Systems
Valves, Actuators & Pump Control
Leaking valves in industrial plants not only lead to loss, safety risks and possible contamination and pollution, but also result in high economic costs. Therefore, valves in hazardous areas require regular proper inspection and preventive maintenance to ensure their functionality.
Read more...Valve & Automation is exclusive agent for Cashco Valve & Automation
News
Valve specialist, Valve & Automation, supplies total valve and control solutions to key process industries throughout southern Africa. The company has now been appointed as the exclusive agent for US company, Cashco for the supply of control valves, regulators, tank equipment and flame arrestors.
Read more...High-flow solenoid valve Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.
Read more...New system improves performance of magnetic drive pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has introduced its ground-breaking MagnoProtect system for the local petrochemical, chemical and general industry markets ,to enhance the safety and performance of its magnetic drive pumps.
Read more...Emerson software optimises maintenance Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
printer friendly version