This project is a project that is encouraged and vigorously advocated by the state to improve energy efficiency of new and old kinetic energy replacement and energy saving technology, and is built in the form of contract energy management. Replace the original high-energy-consuming backpressure turbine generator set with an efficient backpressure turbine generator set, effectively reducing the unit's operating steam consumption value and improving the internal efficiency. On the basis of ensuring the stability of steam in subsequent production processes, the unit does more work under the same operating conditions, so as to generate more clean electricity, create energy-saving and efficiency-enhancing economic benefits, and achieve the purpose of energy conservation and emission reduction.

Original backpressure steam turbine generatorGroup modelB3-3.5/2.6 ；The steam inlet parameters are 3.5MPa(G), 445℃, steam flow inlet75t/h, the back pressure parameter is 2.6mpa (a), annual operation8000 hours,The unit's rated installed power is 3MW,The average unit vapor consumption value is25kg / kw.h;The core flow structure of the unit is seriously aging, with large steam leakage, fewer pressure stages, poor functional capacity and low efficiency, resulting in low power production capacity and high steam consumption value. It is urgent to implement the transformation and efficiency of energy-saving technology.

This high-efficiency backpressure steam turbine generatorGroup modelB6-9.3/2.6 ，The inlet parameters are9.81MPa(G)、540℃, steam flow inlet75t/h，Exhaust pressure2.6MPa(G), steam extraction capacity55t/h，The back pressure parameters are 0.8MPa(A),flow20t/h, annual operation8000 hours, unit ratingThe installed power is6mw，The average unit vapor consumption value is12.5kg / kw.h;This unit is an efficient and energy-saving model, with a multi-stage pressure level, and a complete forging rotor structure. It has the advantages of strong flow-through function, small steam leakage, high internal efficiency and low steam consumption. It can fully meet the ability and basic conditions for replacing the original backpressure unit.

This project uses this unit to replace the original backpressure unit to produce electricity. No new land area, factory buildings and hardware facilities will be added, and the foundation in the original factory building of the original backpressure steam turbine generator set will be renovated and used; no new steam consumption will be added in this project, which will be consistent with the operating conditions of the original backpressure steam turbine generator set; no new pollution and noise impact will be added in this project; only effective reduction of operating steam consumption value can be achieved through efficient performance, resulting in energy-saving and economic benefits.