摘要:
A continuous steam generator including a combustion chamber with a plurality of burners for fossil fuel is provided. A vertical gas duct is connected downstream of the combustion chamber on the hot gas side, in an upper region via a horizontal gas duct. The outside wall of the combustion chamber is formed from evaporation pipes which are welded together in a gas-tight manner and mounted upstream of a water separator system on the flow medium side and from superheater pipes which are welded together in a gas-tight manner and mounted downstream of the water separator system. The water separator system includes a plurality of water separation elements, each element includes an inlet tube which is connected to the respective upstream evaporation for tubes, which extend into a water evacuation tube. A distributer element is arranged on the evaporator side between the respective water separator element and the inlet collector.
摘要:
A nuclear power plant includes a moisture separator reheater, a condenser, and a working steam system for a steam jet air ejector for continuously extracting a non-condensable gas from the condenser. The steam jet air ejector includes a pressure-regulating unit configured to regulate a working steam supplied to the steam jet air ejector from the condenser to a specified pressure, a working steam supply system configured to supply the working steam to the pressure-regulating unit, and a working steam delivery system configured to deliver the working steam regulated by the pressure-regulating unit to the steam jet air ejector. The working steam supply system includes a working steam source of a reactor main steam or moisture separator reheater scavenging steam, and a steam switching control system steam for switching a jet air ejector working steam from the reactor main steam to the moisture separator reheater scavenging steam by moisture separator reheater scavenging steam pressure.
摘要:
A method of recovering oil from an oil well and producing steam for injection into an injection well is provided. After recovering an oil-water mixture from the oil well, oil is separated from the mixture to produce an oil product and produced water. In one process, the produced water is directed to an indirect fired steam generator which is powered by an independent boiler or steam generator. As water moves through the indirect fired steam generator, the same is heated to produce a steam-water mixture. The steam-water mixture is directed to the steam separator which separates the steam-water mixture into steam and water. The separated water is directed from the steam separator back to and through the indirect fired steam generator. This separated water is continued to be recycled through the indirect fired steam generator. Steam separated by the steam separator is directed into the injection well.
摘要:
A once-through steam generator comprises a duct having an inlet end in communication with a source of a hot gas; and a tube bundle installed in the duct and comprising multiple heat transfer tubes. The tube bundle has an economizer section, an evaporator section, and a superheater section. A steam separating device may be positioned between the evaporator section and the superheater section, wherein, as part of a wet start-up, hot water collected by the steam separating device is delivered from the steam separating device to mix with cold feedwater before it is introduced into the economizer section. A start-up module may be positioned in the duct near the inlet end, wherein, as part of a dry start-up, cold feedwater is delivered into the start-up module to generate hot water that is then mixed into the feedwater stream before it is introduced into the economizer section.
摘要:
A system is provided for improved steam generation. The system includes at least two steam systems, wherein a wet steam output from a first steam system is passed through a first separator. The first separator configured to separate dry steam from condensate, and a piping connection is configured to blend the condensate with a boiler feed water stream at the inlet of a second steam system.
摘要:
A cyclone separator for phase separation of a fluid stream has a rotationally symmetrical housing with a hollow chamber. Feed lines feed the fluid stream into the housing substantially tangentially. At least one discharge line conducts the separated gaseous fraction. In order to ensure uniform and homogeneous flow distribution of the steam to be heated as it enters the heating phase, the hollow chamber, when viewed in the radial direction from the mid-axis, has an outflow chamber with a circular cross section and, in radial sequence, a heating chamber, an intermediate chamber, a dryer chamber and an inflow chamber. The inflow chamber is outwardly delimited by the housing. The heating chamber contains heating elements for heating the gaseous fraction. At least one fine separator and at least one associated condensate-collecting trough are arranged in the dryer chamber. The condensate-collecting trough is connected to a condensate discharge pipe in the intermediate chamber for conducting the condensate forming in the fine separator out of the hollow chamber.
摘要:
A steam generator includes a substantially horizontal gas conduit (1) to guide a heating gas flow (2) and an evaporator unit positioned at least partially in the horizontal gas conduit for transferring heat from the heating gas to a flow medium which flows through the evaporator unit. The heat transfer section of the evaporator unit of the steam generator is bottom fed, which means that the inlet conduit is arranged at a lower region of the heat transfer section. The outlet conduit is arranged at an upper region. The inlet conduit allows an once through operation of the evaporator section which is necessary to enable operation under supercritical circumstances. The evaporator unit includes at least two evaporator stages (3, 4) which are arranged in a cascade. Each evaporator stage includes a heat transfer section (12, 21) and a separator (14, 23). The presence of the separators (14, 23) subdivides the evaporator unit into evaporator stages (3, 4).
摘要:
The invention relates to a steam generator whose continuously heating evaporator surface is arranged in a hot gas channel for a hot gas passage in a substantially horizontal direction and which comprises a plurality of steam generating pipes passed through by flowing medium, wherein a plurality of output collectors which are mounted downstream of certain steam generating pipes, on the side of flowing medium, are oriented in the longitudinal direction thereof substantially parallel to the hot gas direction. The invention improves the steam generator such that it is possible to attain a high operational flexibility, a particularly reduced start- and load-alternation time, including starting operation or light load phases and to maintain a low-cost production. Each output collector comprises an integrated water separating element by means of which said collector is connected, on the side of flowing medium, to a plurality of downstream arranged overheating pipes of an overheating surface.
摘要:
The present invention entails a device for separating liquid and entrained solids from a vapor stream traveling under pressure within a conduit by inducement of the annular boundary layer within the pipe wall, to a stratified region flowing along the bottom of the pipe, for removal by way of a condensate drain pot.
摘要:
A mosture pre-separator for the exhaust from a steam turbine, having an exhaust nozzle, comprises three cylindrical conduits. A first cylindrical conduit is affixed to the annular wall of the nozzle and has a radially outwardly extending section adjacent the annular wall, with a second cylindrical conduit, which terminates short of the annular wall, contained therein to form a first collection chamber therebetween. A third cylindrical conduit is slidably positioned in the second cylindrical conduit and extends into the exhaust nozzle of the turbine and forms a second collection chamber between the outer wall thereof and the wall of the exhaust nozzle, with direct communication provided between the first and second chambers. The third cylindrical conduit may have flow directing plates at the upper terminus thereof which extend outwardly towards the wall of the exhaust hood to remove the water film formed thereon and direct the film to be second collection chamber and then from the second collection chamber to the first collection chamber for draining therefrom.