General Electric Technology Gmbh

Alstom Technology Limited

Other

Volker Schüle

Ewald Kitzmann

Julia Heintz

Fabian Bierewirtz

Olivier Clement

Silvia Velm

Manfred Gietz

Stephan Hellweg

Werner L Koch

Niels Brinkmeier

Anneliese Koch, Legal Representative

Stefan Hellweg

Hermann Seelinger

Wolfgang Rieker

Alan Bird

Angie Ewert

Manfred Bauer

Benjamin Bond

Matthias Legin

Daniel Zimmer

Reinhard Leithner

Julia Kirchner

Werner Koch

Mathhias Legin

Ewald Dipl-Ing Kitzmann

Matthias Dipl-Ing Legin

Ulrich Müller

Berthold Faller

A power plant is suggested with an additional heat transfer between the flue gas that flows through a flue gas line () and the feed-water in a feed-water line (). The claimed arrangement of the first heat exchanger () upstream and adjacent to a precipitator () leads to a reduced space demand and optimizes dust precipitation as well as the pressure drop of the flue gas.

System for combined flue gas heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations

The once-through boiler includes a water supply and at least an economizer, an evaporator superheater. No valves are provided between the economizer, the evaporator and the superheater. The high-pressure turbine includes a control valve. The method for low load operation of a power plant with a once-through boiler and a high pressure turbine includes providing a parameter indicative of the stable operation of the once-through boiler in once-through operation, and on the basis of this parameter adjusting the control valve in order to regulate the pressure within the economizer and evaporator and/or adjusting the temperature of the water supplied to the economizer.

Method for low load operation of a power plant with a once-through boiler

A thermal power plant is described comprising a solar collector field and a heat storage to allow the use of the thermal energy collected by the solar field with a time delay for the production of electricity in the steam power plant.

Steam power plant with an additional flexible solar system for the flexible integration of solar energy

A Steam power plant comprising a steam turbine () and a condenser (), wherein the condenser () is disclosed, comprising a first heat sink being a ground heat exchanger () is connected to the condenser during times when ground temperature is lower than air temperature; and a second heat sink being an above-ground heat exchanger is connected to the condenser during times when ground temperature is not lower than air temperature.

Steam power plant with a ground heat exchanger

A steam power plant with a low-pressure turbine is suggested with a second low-pressure turbine on a separated shaft line including a separate generator. The second low-pressure turbine is connected to an additional condensing system without cooling water consumption, thus allowing to maintain the power output at a high level, even if the main condensing system has a reduced capacity due to cooling water restrictions.

Steam power plant with a second low-pressure turbine and an additional condensing system

A hybrid steam power plant is disclosed using the steam generator as a sub-construction for a solar receiver.

Steam power plant with integrated solar receiver

A steam power plant is suggested having, parallel to the high-pressure preheater passage (VWto VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the high-pressure preheater passage (VWto VW) into the condensate line () resp. the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Steam power plant with high-temperature heat reservoir

In a system for effecting pressure control in a thermal power plant operated at low load connected fluidly in series, a relief conduit is disclosed herein. The relief conduit selectively transfers steam from a cold reheat conduit to the second extraction conduit. The plant further includes a boiler, a high-pressure turbine, an intermediate pressure turbine, a low pressure turbine, a main steam conduit for feeding steam from the boiler to an inlet of the high pressure turbine, a cold reheat conduit for feeding steam from an outlet of the high-pressure turbine through a reheat flow path in the boiler, and a first and second high pressure heaters. A first extraction conduit connects the cold reheat conduit to a first high pressure heater to transfer heat, and a second extraction conduit connects the intermediate pressure turbine to the second high pressure heater, to transfer heat.

Steam power plant turbine and control method for operating at low load

A steam power plant is suggested having, parallel to the low-pressure passage (VWto VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the low-pressure preheater passage (VWto VW) into the condensate line that contacts the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Steam power plant with heat reservoir and method for operating a steam power plant

A steam power plant is suggested having, parallel to the preheater passage (VWto VW), a heat reservoir () which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir () for generating peak-load and inserted downstream of the preheater passage into the condensate line () resp. the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Provided is a power plant and a method of operating thereof. The power plant includes a boiler for heating process fluids; and a multistage first steam turbine with an outlet line that passes through the boiler. The outlet line includes an extraction line that is configured and arranged to extract steam from an intermediate stage of the first steam turbine and heat at least one of the process fluids.

Steam power plant with steam turbine extraction control

A method for operating a steam power plant at low load is suggested comprising the extraction of live steam LS before the last superheater SHand/or resuperheated steam before the last resuperheater RSHand using the thermal energy of this steam in other heat sinks. Thus, nearly constant steam parameters of the live steam LS are achieved and the overall efficiency of the steam power plant remains at a high level.

Method of operating a steam power plant at low load

The invention relates to a method, which can be used to detect the wear of prebeater heads of a prebeater () of a beater wheel mill in a simple manner.

Method for operating a beater wheel mill and controller for controlling a beater wheel mill

The invention relates to a method for optimizing a large-scale industrial facility, especially a power plant, consisting of m subassemblies (BGj), wherein j=1(1)m) and wherein the following steps are successively carried out: comparing the parameters (KGj) of all subassemblies (BGto BGj) with predetermined reference values (RWj); detecting the subassemblies (Bgi) with i=1(1)m, whose parameters (KG) are worse than the reference values (RWi) and optimizing the subassemblies (BG) whose parameters (KGi) are worse than the reference values (RW).

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Leimen, Germany

Volker Schüle