Description
- Jet Compressors are a type of ejector that use a jet of high-pressure gas as an operating medium to entrain a low-pressure gas, mix the two, and discharge at an intermediate pressure. Using water vapour as motive medium, steam jet compressors compress gases and/or vapours with large pressure differences.The Thermocompressor, also a type of Jet steam Compressor, is used when both motive and suction gases are steam.
Advantages
Compared with other types of compressing equipment, Jet Compressors offer definite advantages:
- They are simple in construction and have no rapidly rotating parts to break, adjust, or replace.
- Jet Compressors can be made from practically any machinable material including carbon steel, bronze, stainless steels, titanium, hastelloy, etc.
- Require little or no maintenance and only require periodical inspection, therefore they can be installed in remote locations.
- Steam Jackets can be fitted to either part or the whole of the compressor when the duty requires it in order to prevent freezing, etc.
- Can be used in potentially explosive atmospheres without additional safeguards as they have no electrical components.
- The Jet Compressor not only performs the primary function of compressing and mixing gases but, in addition it takes the place of a reducing valve and salvages much of the energy lost in the reduction of gases pressure.
- Compared with other types of equipment Jet Compressors are low in original cost and in upkeep.
Applications
General
- Compression of low-pressure steam with high-pressure steam as motive medium for feeding into medium pressure systems.
Chemical industry
- Heating of distillation columns.
Foodstuffs- and chemical industry
- As components of evaporating systems, e.g. for milk, fruit juices, waste water, chemicals, sea water.
- To cool and concentrate liquids.
Paper industry
- In steam- and condensate systems of single- and multi- cylinder machines.
- To increase pressure in steam systems/to increase performance capacities of paper machines.
In connection with steam boxes to utilise low-pressure steam
Breweries
- Re-utilisation of vapours coming from the boiling process.
Celluloseindustry
- Steam recovery in “TMP” systems.
Petrochemical industry
- Removal of column head vapours.
Speciality
- As a controllable unit fitted with a nozzle needle.
