摘要:
The basic condition of thermodynamics is that it is closed circuit. This is a main prerequisite for a thermodynamics system to be measurable and controllable. This is in full the ground on which CHP-w has been set up. There should not be any misconception about CHP-w like that; how can a thermodynamic equality produce more work reversely ? It is a fact that an equality must be the same on both sides. However, Cogeneration and Cogeneration-w are not two sides of an equality. Cogeneration and Cogeneration- w consist of a seperate equations in itself. Cogeneration is a method of recovering of the heat by using thermodynamic parameters that has fallen into an inert state in an open system. Whereas, the CHP-w predicates on a closed thermodynamic system which aspires to arise the work output as target. CHP-w method has been set up over the features of taking under control to boiler inner combustion- fluid balance with elastic superheated steam production level, except for flue gas avoiding to directly use of boiler inner heat as much as possible, collecting to boiler inner heat in a only hand by producing superheated steam and having been able to converted the enthalpy/ heat temperature and kinetic energy/ pressure into one another through different steam types in a closed system. CHP-w energy generation method obtains as much superheated steam as possible from the boiler inner heat, excluding to the flue gas and produces the work from it. If the steam to be remained in desired type and amount from the work generation by taking from turbine output whether directly as steam, or which uses by converting it over again to the heat energy is the name of a closed thermodynamic system. Provided that to use CHP-w method, the MDF wood panel production facilities in particular have the opportunity to generate electrical energy at a highly significant rate with their own biomass production residues. The same thing is a valid state for other wood-based panel manufacturing facilities whose woody-biomass residues to be left from production is not as much as MDF production process. The rate of heat required to produce superheated steam is very low. All the work done by the superheated steam is only done with this small amount of energy. At the same time this is the total amount of energy that is lost by transforming to work in a closed system. It is the cost of work. The most largest part of the generated heat in the boiler is spent to the water at 104°C temperature to convert to saturated steam. However, this spent-heat energy can be recovered again through a suitable type of steam in a closed system and can be evaluated in the manner what is desired, whereever it is needed.
摘要:
There is disclosed a pumping apparatus (50) for a heat engine (2), comprising: an extraction line (60) arranged to extract a fraction of liquid working fluid from a working circuit (12) of a heat engine (2); an extraction line pump (51) for pumping the extracted working fluid; an extraction line heat exchanger (52) for vaporising the extracted working fluid; and a pressure-operated pump (56) for pumping the working fluid around the working circuit (12), wherein the extraction line pump (51) and the extraction line heat exchanger (52) are arranged in series to convert the liquid working fluid to a pressurised motive gas; and wherein the pump is driven by the pressurized motive gas.
摘要:
A method of cooling exhaust gas of a power generation system, including the steps of: removing heat from the exhaust gas by evaporating a refrigerant of a vapour- compression refrigeration cycle system in a condenser or heat exchanger; passing the refrigerant through the vapour-compression refrigeration cycle system to remove heat from the refrigerant; and returning the cooled refrigerant to the condenser or heat exchanger, to cool the exhaust gas continuously.
摘要:
The invention relates to a steam power plant (1) having a main turbo set (2), a feed water pump (17) for pumping feed water into a boiler (8), and a feed pump drive turbine (18) for driving the feed water pump (17), wherein the feed pump drive turbine (18) is designed as a steam turbine, the live steam side (19) of which is flow-connected to a steam supply (9) from the main turbo set (2), and wherein a further feed water pump (170) is arranged parallel to the feed water pump (17).
摘要:
Este método comprende: la obtención a partir de aguas residuales y de residuos diversos de biogas, agua tratada y oxigeno; la alimentación de una caldera: en una primera fase, con biogas y oxigeno; y en una segunda fase, con agua tratada suministrada a muy alta presión a los inyectores de la caldera, conservando una aportación de biogás; la producción de vapor de agua sobrecalentado a una temperatura superior a 650°C. y baja humedad en un intercambiador calentado por la caldera; el accionamiento, mediante el vapor producido, de una turbina de vapor conectada a un generador eléctrico; y la condensación de parte del vapor procedente de la turbina y su recirculación hacia el intercambiador. La invención también comprende un sistema para la puesta en práctica del método.
摘要:
The invention relates to an extraction method for a preheater of a steam power plant and to a water-steam circuit in a steam power plant. According to the invention, a higher-energetic steam is tapped on a turbine of the steam power plant and is admixed to a lower-energetic steam which is tapped on the turbine. The steam mixture of the lower-energetic steam and the admixed higher-energetic steam is fed to a preheater, in particular a high-pressure preheater, especially a last high-pressure preheating stage of the high-pressure preheater of the steam power plant, particularly for heating feed water flowing through the preheater. By an in particular regulated and/or controlled admixing of the higher-energetic steam to the lower-energetic steam (controlled extraction), a fast power change can be achieved in the steam power plant, particularly in part-load operation of the steam power plant, by changing the temperature of the lower-energetic steam.
摘要:
A feed water storage and recirculation system for a steam turbine power plant having a post-combustion carbon capture plant which uses steam from the power plant as a heat source for regeneration of absorbent and returns condensate from the post-combustion carbon capture plant to the steam turbine power plant, and a plant with post-combustion carbon capture are described, comprising: a feed water storage tank; a deaerator integral to or fluidly in series with the feed water storage tank; a steam extraction conduit to convey water/ steam to the feed water storage tank and deaerator after extraction from a turbine of a steam turbine power plant; a feed water supply conduit to supply feed water from the feed water storage tank to a boiler of a steam turbine power plant; a low pressure condensate conduit comprising at least a PCC condensate conduit to return condensate from an associated post-combustion carbon capture plant to a location upstream of the deaerator, together with the condensate returning through the low pressure feed water heaters from the condenser; a flow restrictor provided in the steam extraction conduit between the turbine and the feed water storage tank and deaerator.
摘要:
When cooling acid which is withdrawn from an absorption apparatus of a sulfuric acid plant, the acid is pumped from an acid pump tank into a heat exchanger and subsequently again supplied to the absorption apparatus, wherein water as heat transport medium is heated in the heat exchanger with the heat of the acid and is at least partly converted into steam, and wherein the water is separated from the steam. It is provided that the acid is supplied to a shell space of the heat exchanger and the water is supplied to heat transfer elements arranged in the shell space and at least partly converted into steam, that the steam generated in the heat exchanger is separated from water in a steam drum, and that the water thus obtained is recirculated to the heat exchanger by means of a pump.
摘要:
Disclosed are a system and method for absorbing and separating acid gas, which utilize the heat generated in an absorbing and separating process for separating and utilizing acid gas in an electric power station or the like, and reduce the consumption of heat by being integrated in the electric power station. According to one embodiment, disclosed is a system for absorbing and separating acid gas using an absorbent, comprising: a boiler for generating steam; and a stripper directly connected to the boiler to utilize the steam as a heat source for regeneration.
摘要:
Die Erfindung betrifft ein Verfahren zum Betrieb eines Dampfturbinenkraftwerkes mit wenigstens einem mit Braunkohle befeuerten Dampferzeuger, wobei die Braunkohle einer indirekten Trocknung in einem Wirbelschichttrockner unterzogen wird, der wenigstens teilweise mit Dampf aus dem Wasser-Dampf-Kreislauf des Dampferzeugers beheizt wird. Das Verfahren zeichnet sich dadurch aus, dass das Rauchgas aus dem Dampferzeuger einer Gaswäsche zur Abtrennung von CO 2 unterzogen wird und dass die für die Gaswäsche benötigte Energie zumindest teilweise aus der Wirbelschichttrocknung ausgekoppelt wird. Die Erfindung betrifft weiterhin eine Einrichtung zum Erzeugen von Dampf aus Braunkohle mit einer Trocknungsanlage für die Braunkohle und einer Einrichtung zur CO 2 -Gaswäsche des Rauchgases, wobei der Trocknungsprozess und die CO 2 -Gaswäsche thermisch miteinander gekoppelt sind.