The hydraulic diaphragm metering Orlita Evolution form an integrated product range with stroke lengths of 15 to 40 mm. This covers the capacity range from 3 to 7,400 l/h at 400 to 10 bar. A wide range of drive versions is available, including some for use in Ex-zone 1 and 2. The Orlita Evolution product range is designed to comply with API 675. This pump serie meets the most exacting safety requirements as an extremely robust hydraulic diaphragm metering pump. It stands out thanks to its PTFE multi-layer diaphragm with integral diaphragm rupture warning system and unique diaphragm position control. Its modular construction offers extremely good flexibility in terms of applications.
Posts Tagged ‘process’
The G3M, a heavy-duty, medium-sized triplex drive unit, was originally developed to bring re-liquefied boil-off gases from LNG tankers to a high pressure level, rendering these gases usable for the ships’ propulsion system. As a rugged workhorse, it is also ideal for various other applications, including use in the chemical industry or for offshore applications on oil platforms. The Lewa Triplex G3M process diaphragm pump was one of the main exhibits of Lewa GmbH at Achema 2015.
The G3M is an intermediate size product in the Lewa portfolio that attains a maximum output of 200 kW thanks to its stroke length of 120 mm and a rod force of 125 kN. It is intended for use primarily in the oil and gas industry, as well as the chemical process industry. The chief application in the former sector is injecting monoethylene glycol and methanol. In the process industry, a wide variety of pumping tasks in pressure ranges between 40 and 750 bar can be managed. Other possible applications include handling highly flammable materials such as vinyl acetate, slurry in the wet oxidation or high-pressure metering of liquid ammonia.
In the existing chemical installation in a Wacker Chemie plant, the safety-related design of the relevant pump systems had to be thoroughly renovated. One of the basic requirements for the redesign was that diaphragm pumps themselves had to remain absolutely hermetically tight, even at high working temperatures of +170 °C during normal operations and brief peaks as high as +200 °C. As a result, Lewa developed an individual solution to meet the specific customer requirements.
“As an additional security measure, the pressure-free hydraulic reservoir behind the diaphragm is blanketed with nitrogen as a protective gas”, explains Lewa project lead Rainer Sonnenfroh.
The RCE pump is a chemical pump made of metallic materials. It is developed for heavy-duty applications in chemically aggressive and abrasive media with or without a solids content, in chemical processing technology, the primary materials industry and other areas of industry. Typical applications are molten salt, pitch, tar, sulphur, etc.
This video shows details of the RCE series:
KSB got a contract to supply 189 process pumps for the new Nghi Son refinery in Vietnam. The location is situated around 200 kilometres south of Hanoi in the Tinh Gia district. The plant under construction is Vietnam’s second refinery and is due to enter operation in 2017. The pumps will be used in crude oil distillation and aromatic compounds production. Depending on the fluid to be handled, the casings will be made of either steel or stainless steel. Impellers, shafts and casing wear rings will be manufactured from corrosion-resistant stainless steels.
Available in 52 sizes, the new series is primarily characterised by high outputs per size ensuring extremely low energy consumption. All pump characteristics conform to the ISO 2858/EN 22 858/ISO 5199 standards. The pumps’ engineers have paid particular attention to the design of the magnetic coupling and the routing of circulation, cooling and lubricating flows. This allows the operator to choose between four operating modes ranging from a simple internal circulation to a so-called dead-end configuration with an auxiliary hydraulic system. As an option, an external heat exchanger can be installed. This means that the pump set can be optimised for the pumping of polymerising, coagulating and crystallising as well as low-boiling fluids.
KSB South Africa in cooperation with EagleBurgmann specified high-efficiency magnetic couplings to seal the shaft for the newly designed API 685 process pump. It was also decided to use the couplings from the proven MAK685 series because they reliably cover a broad application field in the higher pressure and performance range.