Detailed Product Description

Natural gas is transported to users at  pressure of 7.5-5.6 MPa and is distributed within residential areas at  pressure of 1.2 MPa. However, the pressure required at consumers (thermoelectric and hydroelectric power stations) is 0.2-0.4 MPa or less. The surplus potential energy, which is lost at throttling devices of gas expansion stations and gas regulating rooms, can be used for generation of additional electric power and for process purposes. For example, the gas consumed by a 800 MW steam turbine set with a pressure differential of 1.1 -0.17 MPa can give  additional power of over 11 MW.
Long-standing experience in design and manufacture of gas recovery turbines allowed us to create -11 turbine.
The gas recovery turbine type -11 represents a multistage expansion turbine, which generates electric power using  excess pressure of the natural gas supplied as fuel to boilers of thermal power stations (TPSs).
 
The turbine is installed in parallel with throttling valves of the gas expansion station in the pipeline feeding gas to a TPS.
To raise power, efficiency and reliability, the natural gas is heated at the turbine inlet in a surface heat exchanger using low-potential heat of the TPS.

Basic technical parameters of the -11 turbine under nominal conditions

Generator coupling power, MW	11,5
Absolute gas pressure upstream of the check valve, MPa (kgf/cm2)	1,1(11,0)
Absolute gas pressure at the turbine discharge, MPa (kgf/cm2)	0,17(1,7)
Gas temperature at the turbine inlet, 0	135
Gas flow rate, kg/s	42,5
Rotor speed, rpm	3000
Efficiency (at nominal power), %, minimum	85
Overall dimensions, m x m x m	5,32,882,34
Weight of the standart eguipment, t	65