Methods and apparatus for controlling liquid flow to a turbine fogging array. Some implementations are generally directed toward adjusting the output of a variable output pump that supplies water to the turbine fogging array. In some of those implementations, the output is adjusted based on a determined target pump output value that is indicative of a pump output required to change the moisture content of intake air of a combustion turbine to meet a target humidity value. Some implementations are generally directed toward actuating at least one control valve of a plurality of control valves that control liquid throughput to one or more fogging nozzles of a fogging array.

A combustion system including a unit for producing oxidizing gas, a combustion apparatus, a unit for condensing the combustion fumes by bringing the combustion fumes into contact with at least one coolant liquid, a recycler, and a unit for providing molecular oxygen. The unit for producing oxidizing gas makes it possible to supply the combustion apparatus with an oxidizing gas originating from the mixing of molecular oxygen and the recycled portion of the dehumidified gas. The combustion system also includes a regulating unit having the function of automatically regulating the temperature of the coolant liquid of the condensing unit and/or a heater for heating the recycled portion of the dehumidified gas.

A method and apparatus for controlling a process in a system comprising pre-processing of a raw material, processing the pre-processed raw material and acquisition of the result of the processing of the pre-processed raw material, comprising the steps of: capturing input and output variables of the pre-processing; capturing output variables of the processing of the pre-processed raw material; creating a first, second and third process model for at least two different time scales, which describes the effects of adapting the pre-processing of raw material, the effects of adapting the processing of the pre-processed raw material, the effects of adapting the pre-processing of raw material and adapting the processing of pre-processed raw material on the output variables of the processing of pre-processed raw material; wherein the process in the system is controlled using the prediction of the process model which currently provides the best predictions for the process in the system.

Example embodiments relate to a burner including a control unit and an ignition and ionization electrode for igniting and monitoring the burner flame, wherein the ignition and ionization electrode is arranged in the flame area of the burner, is electrically coupled to a discharge circuit and provides an ionization signal when the flame of the burner is switched on, wherein the control unit provides an output signal for actuating the burner on the basis of the ionization signal, and wherein the discharge circuit is connected to a DC voltage source. Example embodiments further relate to a method of monitoring and igniting the flame of a burner and to a circuit arrangement for a burner.

A system for eliminating start-up flaring in a gas plant utilizing flare stack diversion logic comprises a natural gas source; a start-up train flow-path; a running train flow-path; a bypass flow-path; and a flare stack diversion controller, wherein the flare stack diversion controller is programmed to execute flare stack diversion logic comprising: detecting one or more natural gas feed parameters during start-up, receiving the one or more natural gas feed parameters, determining whether the one or more natural gas feed parameters fall outside pre-defined bounds, generating an alert or message to close the block valve, determining whether the block valve has been opened, closing a start-up train flow valve upon determining the block valve has been opened, and diverting all flow from the running train flow-path to the start-up train flow-path to eliminate start-up flaring of the natural gas feed.

Described is a device (11) for controlling the combustion of a burner (1), comprising: first means (12) for measuring the fuel flow rate (Vg); second means 13 for measuring the flow rate of the comburent (Va) first operator means (14) for controlling the opening of an inlet valve (5) as a function of the quantity of fuel to be supplied to the burner (1); second operator means (15) for controlling the comburent flow regulator means (8) as a function of the quantity of comburent to be supplied to the burner (1); According to this invention, the device (11) comprises a unit (16) for controlling the first operator means (14) and the second operator means (15) as a function of the values measured by the first measuring means (12) and by the second measuring means (13).

A method for monitoring the state of pipelines, which conduct water or steam, of at least one heat exchanger, in particular a heat exchanger designed as a superheater, a heat exchanger designed as an evaporator, and a heat exchanger designed as a feed water preheater. When viewed in the downstream flow direction, the at least one heat exchanger is arranged in the exhaust gas flow of a waste heat steam generator. The presence of steam within the exhaust gas flow is automatically detected using sensors which detect a measurement variable that represents the moisture content of the exhaust gas flow and/or using an optical detection system, and if steam is detected, an alarm is triggered. A waste heat steam generator is designed to carry out the method.

A system for eliminating start-up flaring in a gas plant utilizing flare stack diversion logic comprises a natural gas source; a start-up train flow-path; a running train flow-path; a bypass flow-path; and a flare stack diversion controller, wherein the flare stack diversion controller is programmed to execute flare stack diversion logic comprising: detecting one or more natural gas feed parameters during start-up, receiving the one or more natural gas feed parameters, determining whether the one or more natural gas feed parameters fall outside pre-defined bounds, generating an alert or message to close the block valve, determining whether the block valve has been opened, closing a start-up train flow valve upon determining the block valve has been opened, and diverting all flow from the running train flow-path to the start-up train flow-path to eliminate start-up flaring of the natural gas feed.