An all-condition auxiliary denitration system and an operation method thereof are provided. The system includes a heat-storage medium heater, a low-temperature reheater, an economizer, and an SCR denitration device which are successively interconnected, and further including a heat-storage medium tank and a heat-storage medium and feedwater heat exchanger. A flow of a cold heat-storage medium entering the heat-storage medium heater is regulated, so that heat absorption of the heat-storage medium is matched with a boiler load. Flows of hot heat-storage medium and feedwater, which enter the heat-storage medium and feedwater heat exchanger, are regulated through a feedwater regulating valve and a hot heat-storage medium outlet regulating valve. A total feedwater flow is regulated with assistance of a bypass feedwater regulating valve, so that a temperature of flue gas entering the SCR denitration device is kept in an optimal operation range under different boiler loads, and denitration efficiency is ensured.

An all-condition auxiliary denitration system and an operation method. thereof are provided. The system includes a heat-storage medium heater, a low-temperature reheater, an economizer, and an SCR denitration device which are successively interconnected, and further including a heat-storage medium tank and a heat-storage medium and feedwater heat exchanger. A flow of a cold heat-storage medium entering the heat-storage medium heater is regulated, so that heat absorption of the heat-storage medium is matched with a boiler load. Flows of hot heat-storage medium and feedwater, which enter the heat-storage medium and feedwater heat exchanger, are regulated through a feedwater regulating valve and a hot heat-storage medium outlet regulating valve. A total feedwater flow is regulated with assistance of a bypass feedwater regulating valve, so that a temperature of flue gas entering the SCR denitration device is kept in an optimal operation range under different boiler loads, and denitration efficiency is ensured.

The invention relates to a power plant (1) for generating electric energy (100) and process steam (200), comprising: a gas turbine (2) for driving a first generator (3) in order to generate electric energy (100) by combusting a fuel into flue gas (300), a steam turbine (4) for driving a second generator (5) in order to generate electric energy (100), comprising a first stage (4a) for converting fresh steam (400) into residual steam (201), which constitutes at least part of the process steam (200), and a waste heat steam generator (6) for generating the fresh steam (400) from fresh water (500) using the exhaust heat of the flue gas (300), wherein the residual steam (201) has a residual steam pressure which is lower than the pressure of the fresh steam (400), the waste heat steam generator (6) comprises a pre-heater (7) for pre-heating the fresh water (500) in order to form feed water (600) and an evaporator (8) for evaporating the feed water (600) in order to form the fresh steam (400), and the feed water (600) has a feed water pressure which is higher than the residual steam pressure. The invention is characterized by a throttle valve (9, 14) for expanding part of the feed water (600) either at the residual steam pressure in order to generate an additional steam (202) or at a drive steam pressure which is lower than the residual steam pressure in order to generate a drive steam (700) for operating a second stage (4b) of the steam turbine (4).

The present invention is a device and method for controlling a closed loop (10) working on a Rankine cycle comprising a compression and circulation pump (12) for the liquid fluid, a heat exchanger (20) swept by a hot source (C) for evaporation of the fluid, expansion device (32) for the fluid in vapor form, a cooling exchange (44) swept by a cold source (F) for condensing the working fluid, a working fluid receiving tank (50) and working fluid circulation lines (60, 62, 64, 66, 68). The tank (50) is connected to a pressure regulating system (52, 54).

The present invention is a device and method for controlling a closed loop (10) working on a Rankine cycle comprising a compression and circulation pump (12) for the liquid fluid, a heat exchanger (20) swept by a hot source (C) for evaporation of the fluid, expansion device (32) for the fluid in vapor form, a cooling exchange (44) swept by a cold source (F) for condensing the working fluid, a working fluid receiving tank (50) and working fluid circulation lines (60, 62, 64, 66, 68). The tank (50) is connected to a pressure regulating system (52, 54).

A steam using facility in which a generated condensate amount changes in association with a change in an environmental state value, based on a correlation between the environmental state value and the generated condensate amount. An environmental state value when the generated condensate amount becomes a set alarm amount is set as an alarm state value. An alarm is issued when an actual environmental state value by a measuring instrument changes in an increasing direction of the generated condensate amount to reach the set alarm state value.

A steam using facility in which a generated condensate amount changes in association with a change in an environmental state value, based on a correlation between the environmental state value and the generated condensate amount. An environmental state value when the generated condensate amount becomes a set alarm amount is set as an alarm state value. An alarm is issued when an actual environmental state value by a measuring instrument changes in an increasing direction of the generated condensate amount to reach the set alarm state value.

A method for operating a waste heat steam generator, in particular one designed according to the forced flow principle, having an evaporator, through which a flow medium flows; an economizer having a number of economizer heating surfaces, and having a bypass line, which on the flow medium side is connected in parallel to a number of economizer heating surfaces. A variable that is characteristic of the heat energy supplied to the waste heat steam generator for controlling or regulating the flow rate of the bypass line is used, wherein the regulating or controlling of the flow rate of the flow medium through the bypass line takes place at the inlet of the evaporator subject to a supercooling target value. The regulating or controlling of the flow rate of the flow medium through the bypass line also takes place at the outlet of the evaporator subject to an overheating target value.

Mobile water heating systems for producing hot water are disclosed herein. In one embodiment, a mobile water heating system includes a water heater having an oval-cylindrical shape. The water heater includes a shell, a lid and a water reservoir having a screen. A first heating coil and a second heating coil can extend between the screen and a first cone and a second cone, respectively. A first burner and a second burner can be configured to mix and combust fuel and air and direct the resulting flames through the heating coils. Pall rings can at least partially fill an interior volume of the water heater and the combustion of the fuel and air can heat the heating coils and the pall rings. Water can be heated by being directed through the heating coils and through a water manifold positioned to spray water on the pall rings.

Mobile water heating systems for producing hot water are disclosed herein. In one embodiment, a mobile water heating system includes a water heater having an oval-cylindrical shape. The water heater includes a shell, a lid and a water reservoir having a screen. A first heating coil and a second heating coil can extend between the screen and a first cone and a second cone, respectively. A first burner and a second burner can be configured to mix and combust fuel and air and direct the resulting flames through the heating coils. Pall rings can at least partially fill an interior volume of the water heater and the combustion of the fuel and air can heat the heating coils and the pall rings. Water can be heated by being directed through the heating coils and through a water manifold positioned to spray water on the pall rings.