Organic Rankine Cycle Screw Expander For residual-heat utilization in Steel Plant for Malaysia

Working Principle : 

A screw expander has spaces formed by a male rotor, female rotor, and casing. Each
actuation space has a pressure different from that of the others. Each rotor has surfaces,

each of which receives pressure caused by the pressure difference between the high-pressure

side and the low-pressure side after the expansion. The differential pressures cause rotation

torques to act on the respective rotors, causing them to rotate in opposite directions. The

rotations of the rotors isolate the actuation spaces from the air supply port. The actuation spaces
increase in volume as they proceed toward the exhaust side, expand the steam inside the enclosed
spaces and provide rotational energy to the rotors.The screw expander thus generates kinetic energy
through this continuous sequence of actions .

Structure:

Technical characteristics:

 (1) Low quality requirement for the inputs

Screw expander is the only novel power machine that can recover superheated steam, saturated steam, steam-water mixture , hot water and hot liquid so far. It can be self-cleaning and descaled, suitable to be applied to geothermal power generation field conveniently. 

The fluctuation of heat pressure and heat flow is allowed, and it is suitable for the features of i

ndustrial residual heat and generating utilization with moveable, integrated and dispersible characteristics.

(2) Safe and easy for use

No warming up, no barring gears, no run away, safe and reliable for direct impulse starting.

(3) long-term operation without major repair, convenient in maintenance

The operation of screw expander is simple and convenient. Bulky solid design for screw rotors ensures long-term operation without major repair, convenient in maintenance with low cost, no need for professionals.

(4) One of key environmental friendly technologies

Screw expander can be applied to recover industry residual heat and waste heat for power generation and 

used for renewable energy sources.

Application: 

Steel Mills / Petro Chemical Plants
Heat Recovery System/Pressure Reducer
Power Plants
Cement Plants
Bio Gas Boiler/Bio Mass Boiler/Geothermal/Geo Pressure/Heating Plants/Solar Thermal

Production Equipment:

Field View:

Research &Design: