1) based on vacuum hydrocirculating units
2) based on steam ejectors
Jet compression units |
for flare and low-pressure gases recovery
1) based of two-phase jet devices
2) based of steam ejectors
absorption gas cleaning units
for hydrocarbons removal from breathing gases and oil and petroleum products gases recovery
ejectors and injectors for various purposes
+7 (495) 956-76-21
+7 (499) 261-99-98
+7 (499) 267-82-03
Russia, 105082, Moscow
B.Pochtovaya str., 26 "B", build.2, 5-th floor, office 1, room 11A
1) JET COMPRESSION
|1 – liquid-gas jet device
2 - separator
3 – heat exchanger
4 - motive liquid pump
I – low-pressure gas
II – compressed gas to consumer
III – excess of spent motive liquid
IV – fresh motive liquid makeup
Principle of jet compressor operation
The low-pressure gas, e.g., flare gas of refinery, is delivered to the inlet of the jet device 1. The motive liquid is supplied to the jet device by the pump 4. Various liquids that are involved in the process and may be mixed with the low-pressure gas can be used as motive liquid.
As a result of ejection process in the jet device, the gas-vapor mixture is compressed up to the required pressure. Simultaneously with compression, process of absorption of vapor contained in the low-pressure gas by the motive liquid can take place in the jet device.
The generated gas-vapor mixture goes from the jet device 1 to the separator 2, where gas and motive liquid separation occurs. The compressed gas is discharged from the separator 2 for utilization, for example, it is supplied to the fuel system of the plant. The motive liquid is delivered from the separator 2 to the heat exchanger 3 for cooling and then to the inlet of the pump 4. The excess of motive liquid is discharged from the unit through the level-control valve of the separator 2 for further treatment.
It is expedient to use as motive liquid any process flow coming for further separation, this allows to extract the absorbed components of low-pressure gas from the motive liquid.
In case of variable flow of compressed gas, several jet devices and motive liquid pumps can be connected to one separator.
Capacity control of the jet compressor is carried out by automatic
switching on/off the pumps and jet devices. This approach scheme allows
to respond to changes of gas flow discharge efficiently and to exclude
usage of gasholders.
Main advantages of jet compressor
As compared with traditionally used mechanical compressors, the jet compressors have a number of advantages:
Application field of jet compressors
Experience of industrial application of jet compressors
Jet compression unit at Turkmenbashy Refinery
The first jet compressor for processing of flare gases was developed for Turkmenbashy Refinery and put in operation in 2000 (see a picture).
The jet compressor has shown the design objectives and is in operation at the present time. The maximum capacity of the jet compressor is 6000 nm3/h of flare gas compressed up to the pressure of 0.5 MPa. The light coking gas oil – a feedstock for catalytic cracking - is used as motive liquid of the jet compressor.
The hydrocarbon fractions Ñ3+ of the flare gas being dissolved in
the motive liquid are discharged from the jet compressor together
with balance excess of motive liquid and are delivered to catalytic cracking
unit where these Ñ3+ fractions are recovered.
Main technical data of the jet compresor at Turkmenbashy Refinery
If you are interested in technology of jet compressor based on two-phase jet devices and you plan to introduce it at your enterprise, please fill in the following
PurposeJet compressor is referred to gas ejectors which have a duct where mixing of two jets takes place with increase of total pressure of passive (low-pressure) gas flow due to high energy of active (high-pressure) gas flow. As a result, total pressure of gas mixture is more than pressure of passive flow but less than pressure of active flow. Steam, hydrocarbon mixtures and any other gaseous substances can be used as active or passive flow.
Layout of jet compressor
If you are interested in technology of jet compressor based on steam ejectors and you plan to introduce it at your enterprise, please, fill in the following