- Manufacture of internal components can be delayed until HP Well conditions are established. Manufacture of main pressure shell, not delayed.
- Delay between Well completion and installation minimised
- Internal components can be replaced to suit depleting Well conditions
- Specialist skills not required to install new internals
The patented “Universal” Design ejector comprises an external pressure retaining shell, into which can be fitted easily-replaceable internal working components (i.e. the nozzle and the diffuser). This approach allowes the design and manufacture of the pressure retaining shell to proceed, before the new HP Well conditions are known. This part takes the longest time to manufacture. Once the new HP Well is completed and the actual conditions known, the internal nozzle and diffuser can then be designed and manufactured. Thus, the delay between Well completion and installation of the Ejector can be minimised. An added advantage of this design is that the pressure retaining envelope can be sized to accommodate nozzle and diffuser designs for anticipated future operating conditions. Consequently, as the Well depletes over time, a new nozzle and diffuser can be fitted into the existing shell to match the new operating conditions and so maintain production at optimum level with the minimum downtime and cost. Boosting Capacity of Mechanical Compressors 
Transvac Gas Ejectors can be used to increase the capacity of an existing mechanical compressor installation by changing the operating interstage pressure. The Ejector can be installed immediately upstream of the first stage to achieve a volume reduction, thereby increasing capacity. In some instances a mechanical compressor can be totally replaced by a Gas Ejector reducing energy costs and maintenance. Send us your requirements using our Gas Ejector Enquiry Form Flare Gas Recovery / Elimination Traditionally in the Oil & Gas Industry, waste and surplus gas has been disposed of by flaring to atmosphere. Today this process is becoming increasingly unacceptable as the Industry progresses towards eliminating the emission of greenhouse gases into the atmosphere whilst simultaneously conserving energy. 
Therefore, the demand for equipment that can safely and economically compress waste and surplus gas back into the production process is rapidly increasing. | Gas Ejector fitted with integral HP gas regulating Assembly |
Transvac Gas Ejectors are ideally suited to this application because they employ high-pressure gas energy to entrain and compress waste and surplus gas to a pressure where the gas can be used in the process. Alternative schemes could involve the use of a side stream taken from the discharge of the Gas-lift Compressors as the HP motive gas supply. Schemes in which the flare gas is compressed into the fuel gas system are also common. Control of Flare Gas Ejectors In these applications, it is not uncommon for the flowrate of the flare gas to vary and; if not controlled, the suction pressure created by the Gas Ejector will also vary. In order to maintain the desired pressure on the suction side of the GAS-JET Compressor, a number of standard control techniques are available.
These include:- - Recycling of gas from the discharge side of the Gas Ejector back into the suction (low pressure) side
- Incorporation of an integral HP gas regulating assembly which varies the motive fluid consumed. (As shown in the photograph)
Sulphur Pit Ejectors In processing crude oil into refined products such as petrol and motor oils, sulphur must be removed. This is done chemically and it results in a concrete pit containing molten sulphur which emits hydrogen sulphide and other noxious gases. These gases are vented to a burner to prevent them escaping to atmosphere. Transvac Steam Ejectors are a reliable, simple and low cost method of entraining the gases and discharging them to the burner with a steam jacket is employed around the Ejector to prevent sulphur from precipitating out. Transvac Steam Jet Thermocompressors are also used on sulphur recovery plants for recovering and compressing flash steam. Pumping Sand Slurries from Separators | Transvac Liquid Jet Pump with ceramic internal parts |
Transvac Eductors (also called Liquid Jet Pumps) are an ideal method of transporting sand slurries from Separators or Cyclones as part of a de-sanding / sand washing system for the Oil & Gas and allied industries. Accumulated sand is normally fluidised; to ensure it will flow, using jets of water by-passed from the motive water supply, prior to entering the suction port of the Eductor. Transvac sand slurry Eductors are manufactured as standard with ceramic motive water nozzles and ceramic throat inserts to resist abrasion. The body of the Eductor is available in 316L stainless steel, carbon steel, duplex steel or super duplex steel. See Application Sheet SSJP010 | 
