The present application provides a once-through evaporator system. The once-through evaporator system may include a number of once-through evaporator sections with a distribution valve and a level sensor and a controller in communication with each distribution valve. The controller provides the distribution valve with a position set point and biases the position set point via a feedforward signal based on a fill level as determined by the level sensor in each of the once-through evaporator sections.

The present application provides a once-through evaporator system. The once-through evaporator system may include a number of enlarged once-through evaporator sections, a first superheater positioned immediately downstream of the enlarged once-through evaporator sections, a second superheater positioned downstream of the first superheater, and an attemperator positioned between the first superheater and the second superheater.

A method is disclosed for anticipating operation characteristics of a steam generation system, the steam generation system comprising at least one boiler. The method comprises conducting a fuel analysis of a solid fuel and anticipating the at least one operation characteristic of the steam generation system at the time when a specific partial quantity of solid fuel is combusted in the furnace of a boiler of the steam generation system, and further determining at least one adapted setpoint of at least one operation parameter of the steam generation system dependent upon the fuel composition of any specific solid fuel partial quantity so as to counteract and/or remedy changes of the at least one operation characteristic which are caused by the fuel composition of the specific solid fuel partial quantity. The method may be employed to improve operation of a steam generating system when the fuel composition varies.

A method is disclosed for anticipating operation characteristics of a steam generation system, the steam generation system comprising at least one boiler. The method comprises conducting a fuel analysis of a solid fuel and anticipating the at least one operation characteristic of the steam generation system at the time when a specific partial quantity of solid fuel is combusted in the furnace of a boiler of the steam generation system, and further determining at least one adapted setpoint of at least one operation parameter of the steam generation system dependent upon the fuel composition of any specific solid fuel partial quantity so as to counteract and/or remedy changes of the at least one operation characteristic which are caused by the fuel composition of the specific solid fuel partial quantity. The method may be employed to improve operation of a steam generating system when the fuel composition varies.

A device and method select an optimal boiler combustion model from among a plurality of boiler combustion models for boiler combustion to update a memory in which the boiler combustion models are stored. The device includes a memory configured to store first boiler combustion models that are derived in advance and second boiler combustion models that are derived in advance; and a processor configured to select an optimal boiler combustion model from among the first and second boiler combustion models and to update the memory according to characteristics of the selected optimal boiler combustion model. The processor may further generate a third boiler combustion model for the combustion of the boiler to select the optimal boiler combustion model from among the first to third boiler combustion models and verification data for model verification through the latest data measured in the boiler and data on basic characteristics of the measured data.

A device and method select an optimal boiler combustion model from among a plurality of boiler combustion models for boiler combustion to update a memory in which the boiler combustion models are stored. The device includes a memory configured to store first boiler combustion models that are derived in advance and second boiler combustion models that are derived in advance; and a processor configured to select an optimal boiler combustion model from among the first and second boiler combustion models and to update the memory according to characteristics of the selected optimal boiler combustion model. The processor may further generate a third boiler combustion model for the combustion of the boiler to select the optimal boiler combustion model from among the first to third boiler combustion models and verification data for model verification through the latest data measured in the boiler and data on basic characteristics of the measured data.

Method and system for adjusting a measured reheat outlet steam temperature (R.sub.PV) to approximate a reheat outlet steam temperature setpoint (R.sub.SP) in a boiler. An R.sub.PV is compared to an R.sub.SP. If the R.sub.PV is less than the R.sub.SP and a position of a fuel nozzle tilt (TILT.sub.PV) is below a high limit of the fuel nozzle tilt (TILT.sub.HIGH), the TILT.sub.PV is increased while a flow rate of a secondary flue gas recirculation (SFGR.sub.PV) is kept constant. If the R.sub.PV is less than the R.sub.SP and the TILT.sub.PV is at the TILT.sub.HIGH, the SFGR.sub.PV is increased. If the R.sub.PV is greater than the R.sub.SP and the SFGR.sub.PV is greater than a low limit of flow rate of the SFGR (SFGR.sub.LOW), the SFGR.sub.PV is decreased, while the TILT.sub.PV is kept constant. If the R.sub.PV is greater than the R.sub.SP and the SFGR.sub.PV is at the SFGR.sub.LOW, the TILT.sub.PV is decreased.

Method and system for adjusting a measured reheat outlet steam temperature (R.sub.PV) to approximate a reheat outlet steam temperature setpoint (R.sub.SP) in a boiler. An R.sub.PV is compared to an R.sub.SP. If the R.sub.PV is less than the R.sub.SP and a position of a fuel nozzle tilt (TILT.sub.PV) is below a high limit of the fuel nozzle tilt (TILT.sub.HIGH), the TILT.sub.PV is increased while a flow rate of a secondary flue gas recirculation (SFGR.sub.PV) is kept constant. If the R.sub.PV is less than the R.sub.SP and the TILT.sub.PV is at the TILT.sub.HIGH, the SFGR.sub.PV is increased. If the R.sub.PV is greater than the R.sub.SP and the SFGR.sub.PV is greater than a low limit of flow rate of the SFGR (SFGR.sub.LOW), the SFGR.sub.PV is decreased, while the TILT.sub.PV is kept constant. If the R.sub.PV is greater than the R.sub.SP and the SFGR.sub.PV is at the SFGR.sub.LOW, the TILT.sub.PV is decreased.

A system and method enable an incineration facility to be controlled and diagnosed, and the life cycle thereof managed, using a heat exchange and design program and operation mode analysis of an operator of the facility. Operation efficiency is improved by comparing and analyzing (a) initial design values of the incineration facility, (b) measured actual valued obtained by measuring waste composition and heating values changed after construction of the facility and (c) operation values indicating actual operation adjustment values and operating result values operated by the operator and by analyzing the operator. The design values, measured actual values and operation values are compared and provided as data in graphs and tables.

A system and method enable an incineration facility to be controlled and diagnosed, and the life cycle thereof managed, using a heat exchange and design program and operation mode analysis of an operator of the facility. Operation efficiency is improved by comparing and analyzing (a) initial design values of the incineration facility, (b) measured actual valued obtained by measuring waste composition and heating values changed after construction of the facility and (c) operation values indicating actual operation adjustment values and operating result values operated by the operator and by analyzing the operator. The design values, measured actual values and operation values are compared and provided as data in graphs and tables.