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7966977 |
Method and device for the production of superheated steam
The invention relates to a method and an apparatus for the generation of superheated steam. According to the invention, essentially saturated or wet steam is generated in a main vessel in which...
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7922155 |
Steam-generator temperature control and optimization
A control method for boiler outlet temperatures includes predictive control of SH and RH desuperheater systems. The control method also includes control and optimization of steam generation...
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6311647 |
Method and device for controlling the temperature at the outlet of a steam superheater
After the economizer, an injection water pipe branches off the connecting pipe between economizer and evaporator in order to control the steam temperature. The injection water pipe is provided with...
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6006009 |
Superheated vapor generator system
A superheated vapor generator system comprises at least two vapor generators connectable to a controller for causing at least one of the superheated vapor generators to generate superheated vapor...
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5950574 |
Boiler
Only suspension type superheaters (52) and (53) are disposed in an outlet of a furnace. These superheaters have heat transfer areas which are so dimensioned that an exhaust gas temperature at...
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5839396 |
Method and apparatus for starting up a continuous-flow steam generator
A continuous-flow steam generator has a combustion chamber with a number of burners for fossil fuel. A gas-tight containing wall is formed from approximately vertical evaporator tubes, through...
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5605118 |
Method and system for reheat temperature control
A method and system for controlling reheater steam temperature is disclosed. The method can be carried out by selectively adjusting the flow of superheated steam into a superheater positioned...
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5307766 |
Temperature control of steam for boilers
A once-through boiler for producing steam from water comprising a boiler vessel having an interior portion, an inlet for passing the water into the boiler vessel, and an outlet. A first conduit is...
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4969084 |
Superheater spray flow control for variable pressure operation
A superheater spray water control system for variable pressure applications produces an output signal representative of expected superheater absorption as a function of measured steam flow,...
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4887431 |
Superheater outlet steam temperature control
A method and apparatus for controlling superheater outlet temperature of a steam generator utilizes a feed-forward control signal to control a spray attemperator. The feed-forward control signal is...
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4791889 |
Steam temperature control using a modified Smith Predictor
A system for controlling steam temperature in a boiler using a time delay feedback controller known as a Smith Predictor to provide control tuning of true boiler parameters which change with load.
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4776301 |
Advanced steam temperature control
A control system for a heat exchanger, such as a superheater in a fossil fuel fired steam generator, uses a multivariable non-linear regression equation to develop a feed forward signal that...
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4637348 |
Apparatus for controlling starting operation of boiler
An apparatus for controlling a starting operation of a boiler which comprises a super heater, a super heater bypass valve, a turbine bypass valve and a fuel flow rate regulating valve. A...
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4549503 |
Maximum efficiency steam temperature control system
A system is disclosed for increasing the main steam temperature in a boiler/turbine installation to the maximum level consistent with safe operation of the installation. The difference between the...
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4421039 |
Pulverized coal-fired burner
A pulverized coal-fired burner having a longitudinally elongated coal delivery pipe through which a stream of pulverized coal entrained in air is passed into the furnace and at least two air plenum...
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4296730 |
Control system for a solar steam generator
A once-through solar steam generator assembly (16) is controlled by a control system wherein the outlet temperature of superheated steam from two independent boiler flow paths (1-12; 1'-12') is...
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4278069 |
Water heater
A water heater comprises an elongated vessel having a heat exchanger that occupies a substantial portion at one end and leaves a minimum volume storage and blending zone at the other end of the...
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4241701 |
Method and apparatus for controlling steam temperature at a boiler outlet
Boiler outlet temperature in a sliding pressure operation is controlled in a routine way by varying the fluid or heat distribution in the boiler. The effect a change in pressure has on steam...
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4232636 |
Maintenance platform built upon retractable support beams
A maintenance platform for a boiler-furnace that permits safe and ready access to its normally inaccessible upper parts and integral superheater. The maintenance platform is installed in the...
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4208882 |
Start-up attemperator
In a combined cycle power plant comprising a steam turbine and gas turbine connected through a heat recovery steam generator, the start-up mode for a steam turbine is based upon the shell metal...
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4144846 |
Forced-flow steam generator
The forced-flow steam generator is provided with a control means for controlling the amount of water fed to the evaporator. The control means includes a controller which receives a load-dependent...
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4041908 |
Super heater
An auxiliary steam superheater designed to be easily added to an existing steam system to boost the steam temperature to approximately 750° F. This superheater comprising a steam coil system ...
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4031863 |
Process and a control system for controlling the exit temperature of vapor flowing through a contact heating surface of a vapor generator
Measurements of the instantaneous flow of heat delivered to the vapor generator and the quantity of vapor flowing momentarily through the contact heating surface are made and the resultant signals...
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3974644 |
Combined cycle electric power plant and heat recovery steam generator having improved multi-loop temperature control of the steam generated
A combined cycle electric power plant includes gas and steam turbines and a steam generator for recovering the heat in the exhaust gases exited from the gas turbine and for using the recovered heat...
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3946566 |
Turbine start-up system
Method and apparatus are described that are operative to elevate the temperature of superheated vapor delivered to a turbine, especially during startup of a power plant. A bypass circuit containing...
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3807364 |
MIXING HEADER
An elongated tubular header disposed on the discharge end of a superheater for a waste heat boiler, the header having a plurality of inlet ports for superheated steam disposed lengthwise along one...
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3769789 |
RANKINE CYCLE ENGINE
A power conversion system employing an organic fluid, toluene, including a supercritical heater for vaporizing the organic feed liquid, a turbine for expanding the vapor and providing a mechanical...
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3756029 |
GAS/STEAM TURBINE PLANT AND A METHOD OF OPERATING SAME
A second steam turbine is connected to the existing steam turbine to be operated by the exhaust steam of the existing steam turbine. In addition, the exhaust steam from the existing steam turbine...
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3742709 |
STEAM POWER PLANT AND METHOD OF OPERATING THE SAME
The feed water is normally supplied to the steam generator to extract heat from the steam generated in the evaporator. However, at peak loads of the plant, the rate of heat extraction from the...
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3627062 |
HEAT DISTRIBUTION CONTROL IN ONCE-THROUGH BOILERS
The reheater outlet temperature of a once-through boiler is controlled by adjustment of a manipulated variable which modifies the heat distribution in the boiler. By using only a small amount of...
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3610326 |
APPARATUS FOR CONTROLLING HEAT EXCHANGE IN STEAM GENERATORS
The convection heated heating surfaces are formed of tube panels in which adjacent pairs of panels are movable with respect to each other into and out of a common plane to vary the amount of...
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3580226 |
STEAM GENERATOR USING GAS RECIRCULATION
A steam-generating unit using gas recirculation for steam temperature control, where the recirculated gases are introduced into the furnace through the ash hopper. A liquid seal inside the ash...
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3548608 |
REFRIGERATION SYSTEM HAVING GENERATOR TEMPERATURE SENSING MEANS
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3515102 |
DESUPERHEATER CONTROL SYSTEM
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3496724 |
MAIN STEAM LINE DESUPERHEATER SYSTEMS,APPARATUS AND METHOD
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3616787 |
OVERFLOW VALVE FOR A STEAM PLANT
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RE10124 |
Title is not available
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3485048 |
INCREASED VAPOR GENERATOR OUTPUT FEATURE
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3430610 |
STEAM RAISING BOILERS AND PROCESS FOR IMPROVING THERMAL EFFICIENCIES OF SUCH BOILERS
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3413809 |
Steam power plants
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3400559 |
Steam generator having a minimum load firing system
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3387719 |
Counter and bundle ejector
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3385270 |
Steam power plant with forced-flow boiler system, particularly for supercritical pressure, and a superimposed circulating system
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3364903 |
Steam generator with reheat temperature regulation
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3362384 |
Steam generation with reheat temperature control
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3357411 |
Forced-flow once-through vapor generator
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3356075 |
Method of pulverized coal firing a steam generator and controlling steam temperature
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3345975 |
Reheater and superheater circuit arrangement
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3291106 |
Vapor generator with gas recirculation
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3287001 |
Steam desuperheater
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