GEA uses jet pumps and surface condensers made of graphite for its vacuum pumps in all cases wherethe usual corrosion and acid proof materials are not resistant enough.
Because of its excellent thermal conductivity and its high resistance to temperature change, graphite is the ideal material for heat exchangers and jet pumps. Gas-tightness is achieved by means of impregnation. Jet pumps made of graphite and operated in vacuum below 3 mbar can be heated to eliminate ice formation.
In cooperation with SGL, a major manufacturer of carbon-based products, GEA has developed a new ejector body made of graphite with many advantages to bring the vacuum system on another performance and safety level.
The new developed graphite ejector can be adapted to customer required process conditions and optimize steam consumption.
As surface condensers, block heat exchangers, shell-and-tube heat exchangers or also plate heat exchangers from graphite of all commercial makes are used which are suitable to condense vapors under vacuum.
Multi-stage vacuum systems with block heat exchanger benefitfrom small dimensions, little space requirement and simple assembly on site.
4-stage steam jet vacuum pump with block condenser in compact design
- A motive steam
- B suction connection
- C cooling water
- 1-4 jet pumps
- I-III condenser chambers
Jet vacuum pumps are utilized for suction pressures down to approx. 0.1 mbar. GEA designs these vacuum pumps for a barometric installation and using a gear pump in Hastelloy also for a non-barometric installation.
Advantages
- Compact design
- Easy to clean
- Of variable use
- No moving parts
- Low maintenance
- Can be installed in virtually all situations
- Quickly and easily put into operation
- Low acquisition costs
Upgrading existing ceramic steam jet vacuum systems
Previously ceramic jet pump systems have proven to be very successful. However, with the increased standards, ceramic jet pump systems no longer meet the requirements of the industry.
Existing porcelain jet pumps can be replaced by graphite jet pumps without any on-site modifications. The installation dimensions remain unchanged. By means of graphite jet pumps, existing steam jet vacuum plants can be optimized in terms of energy consumption and performance
Downloads
Related Products
Variable - Flow Ejectors
Variable - Flow Ejectors are based on proven GEA jet pump technology and often used for heat recovery.
Steam jet ventilator
Steam jet ventilators are based on proven jet pump technology and often used to convey air, gases and vapors.
Steam jet compressor
Steam jet compressors type bv1 are based on proven jet pump technology and often used used in evaporating, distillation, cooling, crystallization, deodorization, degassing and drying under vacuum.
Liquid jet liquid pump
Liquid jet liquid pumps are used for conveying and mixing liquids such as water, acids or lye in water and waste water treatment plants.
GEA Insights
The breakthrough that changed spray drying
In 1976, NIRO engineers responded to a competitive challenge by rethinking what spray drying could do. Their idea became the multi-stage dryer MSD. Fifty years later, the same fundamental principle helps turn liquids into the powders used in essential nutrition products and important medicines around the world. Refined through decades of engineering expertise, customer insight and continuous development, MSD is a story of innovation with lasting impact.
Beyond the machine: unlocking better plant performance
An efficient machine does not automatically make an efficient factory. Real improvement often starts by looking beyond individual equipment and understanding how processes, energy systems and operating decisions affect one another. It’s a holistic approach designed to uncover opportunities that might otherwise be missed.
How a valve reshapes the way food and drinks are made
In food and beverage plants, valves are commonly operated using compressed air. GEA Hydract® Actuation Technology moves valves with water instead, in a closed, digitally controlled circuit. The result is a valve that can be held exactly in place and steered in fine-tuned steps. This results in lower energy use and greater control.
