摘要:
Improved steamblow commissioning of a steam plant with steam discharged to the condenser and increased use of permanent piping instead of temporary piping with quenching/desuperheating and providing a low back pressure environment to enable aggressive steam blow cleaning.
摘要:
A system for improving a steam oil ratio (SOR) includes a direct steam generator (DSG) boiler fluidly coupled with a downhole portion of a steam system via at least a DSG outlet, wherein the DSG boiler is configured to schedule super-heat delivered to the downhole portion to optimize the SOR associated with the system
摘要:
A scale suppression apparatus capable of suppressing in a low-priced manner the generation of silica-based scale and calcium-based scale in the influent water, a geothermal power generation system using the same, and a scale suppression method are provided. The apparatus includes a first addition unit configured to add liquid containing a chelating agent and an alkaline agent to influent water flowing through a pipe arrangement to make the influent water higher than pH 7, a second addition unit configured to add an acid substance to the influent water to make the influent water lower than pH 7, and a controller configured to alternatively switch between the operation of the first addition unit and the operation of the second addition unit. The controller controls the switching of the first addition unit and the second addition unit based on the signals output from a scale detection unit and a pH meter.
摘要:
A method and a system for monitoring the mass changes of a heat exchanger bank of a steam boiler. The heat exchanger bank is supported by hanger rods and support beams to the frame beams of the steam boiler. In the method, the web plates of the support beams are provided with strain gages for measuring the changes in the strain state generated in the support beams by the mass of the heat exchanger bank. The system includes strain gages fixed to the web plates of the support beams for measuring the changes in the strain state generated in the support beam by the mass of the heat exchanger bank, data logging means for logging the measurement data and a computer or a corresponding calculation unit for processing the measurement data.
摘要:
A system and method to control of sootblowers in a fossil fueled power plant, in particular to plant applications systems using a graphical programming environment in combination with a set of rules to activate sootblowers. The system can be constrained by time limits and/or rule based time limits. Actual blower activation is typically based on the current status of key control variables in the process which alter the actual activation time within a constraints system. The system does not typically require knowledge or models of specific cleanliness relationships. The result is a system without sequences or queues that readily adapts to changing system conditions.
摘要:
A method for cleaning and conditioning the water-steam circuit of a power plant, especially of a nuclear power plant, uses an amine as a film-forming agent. The amine is metered into the working medium circulating in the water-steam circuit. The film-forming agent forms a hydrophobic film on the surfaces of the circuit. During the process, the concentration of at least one impurity contained in the water and the concentration of the film-forming agent in at least in the feed water of the steam generator are measured and monitored. The concentration of the film-forming agent is varied, as needed, subject to the concentration of the impurity.
摘要:
A steam cooker includes: a heating chamber for an item to be cooked; a removable water tank; a steam generating device with a housing to which water is supplied from the water tank and that heats the water within the housing and supplies steam to the heating chamber. A hardness detection portion includes a plurality of electrodes immersed in water within the water tank that detect the hardness of the water within the water tank by resistance between the electrodes. When the hardness of the water within the water tank is high, the interval of cleaning is shorter than an interval set when the hardness detected is low.
摘要:
A method of controlling soot blowers near a heat exchange section includes generating models of both the ideal clean operating condition of the section and the dirty operating condition. The current operating condition of the section is used to calculate a reliability parameter that provides an indication of the reliability of the ideal and dirty models. If the reliability parameter indicates that the models are reliable, the models are used to help evaluate the cleanliness status of a particular heat exchange section and assist in making decisions on whether to blow the section or not, and whether to make any necessary adjustments to the operating sequence of the soot blowers. If the reliability parameter indicates that the models are unreliable, the models are regenerated using additional process data.
摘要:
A sootblower of the short travel rotary furnace wall type having features which permit indexing of the angular position of the screw tube assembly during successive operating cycles. Indexing of the arc swept by the sootblower nozzle is provided through the use of a novel cam plate component and operating the sootblower in a manner which provides for indexing between operating cycles.
摘要:
A boiler of a combustion plant has at least one heat exchanging device which can be traversed by a medium from an inlet to an outlet and is held in the interior of the boiler by means of at least one suspension device, wherein means for determining the temperature of the medium are provided at least at the inlet or at the outlet, and the at least one suspension device has means for determining the weight of the at least one heat exchanging device. Also proposed are a cleaning control device, a cleaning method and a method for operating a combustion plant which permit a considerable reduction in the cleaning expenditure, so that maintenance costs can be kept low.