Power plant

 

(57) Abstract:

The invention relates to a power system, in particular to energy plants. Power plant, containing provided with access to the payload of a combined cycle installation input pair, the output of which is connected to the first input of the heater, the first output of which is connected to the first input capacitor, a first output of which is communicated with the environment, the first circuit water circulation, is connected to the second input and the second output capacitor, comprising serially connected first pump and refrigerator, on its first input and first output and the second circuit water circulation, is connected to the input of the input pair of combined cycle gas turbines and to the first circuit water system, including sequentially connected to the second pump and the heater, on his second entrance and a second exit. The installation further comprises a heat exchanger, the compressor and the throttle, the inlet of which is connected with the first heat exchanger output and the output with the second input of the refrigerator, the compressor inlet is connected with the second output of the fridge, and the output to the first input of the heat exchanger formed by this closed loop filled with the working fluid, and the s. One particular solution to the installation is the inclusion of the first pump between the first output of the refrigerator and a second input capacitor. Other private solution is the inclusion of the first pump between the second output capacitor and a refrigerator and the connection of the secondary circuit water circulation to the output of the first pump. The invention allows to reduce heat loss and water in the environment. 2 C.p. f-crystals, 1 Il.

The invention relates to a power system, in particular to power plants designed for production of electric energy and/or for performing mechanical work.

Known power plant, containing provided with access to the payload of a combined cycle installation input pair, the output of which is connected to the first input of the heater, the output of which is connected to the first input capacitor, a first output of which is communicated with the environment, the first circuit water circulation, is connected to the second input and the second output capacitor, comprising serially connected first pump and refrigerator, on its first input and first output and the second circuit water circulation, is connected to the input of the input pair of the steam gas is degravel, on his second input and the second output (see application UK 2074659, CL F 01 K 21/04, publ. 04.11.81).

The disadvantages of the known apparatus are large heat losses with flue gas-steam mixture and a large loss of water due to the low efficiency of the refrigerator.

Closest to the proposed power plant is containing provided with access to the payload of a combined cycle installation input pair, the output of which is connected to the first input of the heater, the first output of which is connected to the first input capacitor, a first output of which is communicated with the environment, the first circuit water circulation, is connected to the second input and the second output capacitor, comprising serially connected first pump and refrigerator, on its first input and first output and the second circuit water circulation, is connected to the input of the input pair of combined cycle gas turbines and to the first circuit water including sequentially connected to the second pump and the heater, on the second input and the second output (see and.with. The USSR 547121, CL F 01 21/04, publ. 07.12.82).

The disadvantages of the known apparatus are large losses of heat with the cooling water and large on the STS large amount of heat is discharged into the atmosphere, and while limiting the discharge of heat into the atmosphere is not all the water from the vapor-gas mixture is recovered in the condenser and is discharged into the atmosphere.

The invention solves the problem of reducing heat loss and water in the environment.

This technical result is achieved due to the fact that in the power plant, containing provided with access to the payload of a combined cycle installation input pair, the output of which is connected to the first input of the heater, the first output of which is connected to the first input capacitor, a first output of which is communicated with the environment, the first circuit water circulation, is connected to the second input and the second output capacitor, comprising serially connected first pump and refrigerator, on its first input and first output and the second circuit water circulation, connected to the input of the input pair of combined cycle gas turbines and to the first circuit water system, including sequentially connected to the second pump and the heater, on its second input and second output, entered the heat exchanger, the compressor and the throttle, the inlet of which is connected with the first heat exchanger output and the output with the second input of the refrigerator, the compressor inlet is connected with vypolnen working fluid, and its second input and second output heat exchanger serially included in the circuit water.

This result is achieved also due to the fact that the first pump connected between the first output of the refrigerator and a second input capacitor.

This result is achieved also due to the fact that the first pump connected between the second output capacitor and a refrigerator, and the second circuit water is connected to the output of the first pump.

This result is achieved also due to the fact that interconnected the heat exchanger and the second pump is turned on before the heater.

This result is achieved also due to the fact that the compressor is made with a mechanical drive and is provided with a mechanical connection with the steam-gas installation.

This result is achieved also due to the fact that as the payload used the electric generator and the compressor has an electric actuator connected with the output of the electric generator.

The drawing shows one of the instantiations of its stated power plant.

Power plant comprises a gas-vapor condition is 3 combustion and steam turbine 4, exit through which the heater 5 is connected to the first input capacitor 6 (for example, contact type), the first output of which through the booster compressor 7 is communicated with the environment (atmosphere). The input of the compressor 2, which is the entrance combined cycle units 1 and simultaneously the input of the entire power plant, communicated with the environment (atmosphere). The input of the input pair in a combined cycle gas turbine installation 1 can be arranged directly in the combustion chamber 3 (this option is shown on the drawing, with the input of the input fuel not shown), and flow turbine parts 4 or compressor 2. Power plant comprises also connected to the second input and the second output capacitor 6 primary circuit water circulation formed by series-connected first pump 8 and refrigerator 9 (on his first entrance and a first exit), and is also connected to the input of the input pair of combined cycle units 1 and to the first circuit second water circuit water formed by series-connected second pump 10, the heat exchanger 11 (on the second input and the second output) and the heater 5 (on his second entrance and a second exit). In addition, the power plant comprises a compressor is 9. The input of the compressor 12 is connected with the second output of the refrigerator 9, and the output to the first input of the heat exchanger 11. Formed by the elements 11, 13, 9, and 12 closed loop filled with the working fluid, such as refrigerant. The compressor 2, the turbine 4 and the booster compressor 7 are connected mechanically, for example, shaft 14, which can be used as output for the payload (for example, an electric generator 15).

In addition, there are various special cases of the requested installation.

In one of them the first pump 8 connected between the first output of the refrigerator 9 and a second input capacitor 6. The first pump 8 may be included between the second output capacitor 6 and a refrigerator 9, and the second circuit water is connected to the output of the first pump 8. Interconnected sequentially to the heat exchanger 11 and the second pump 10 may be included in front of the heater 5. In the case of execution of the compressor 12 with a mechanical drive (not shown) it may be provided with a mechanical connection (not shown) combined-cycle gas unit 1. And in the case of use as a useful load of the electric generator 15, the compressor operates with an electric actuator (not shown) associated with the output of the Atmospheric air, compressed in the compressor 2 combined-cycle plant 1, enters the combustion chamber 3, where the combustion process. The products of combustion of fuel mixed with the steam flowing in the steam-gas installation 1 from the heater 5 (from his second output), which is, for example, heat recovery boiler, proceed to the turbine 4, which by means of shaft 14 causes the rotation of the compressor 2, the booster compressor 7 and the payload, such as an electric generator 15. Hot gas-vapor mixture with a pressure close to atmospheric, and the temperature approaching 650-750oWith the outlet of the turbine 4 is supplied to the heater 5 (from his first entrance), where giving up its heat, cools to a temperature of 90-130oC. Next, the gas-vapor mixture is fed to the first input capacitor 6 (the drawing shows the capacitor contact type), which gives off its heat to the water of the first circuit, being cooled to a temperature of ~70oWith (or slightly less), which is below the condensation temperature of water vapor (76oC). Drained and cooled gases are compressed to atmospheric pressure in the booster compressor 7 and released into the atmosphere. Water from the condenser 6 (from the second it is released) enters the first loop it circi input capacitor 6, where again comes into thermal contact with the hot steam and gas mixture flowing from the outlet of the turbine 4, completing thereby the circulation of water in the first circuit. In the case of using the capacitor 6 contact type in it spray water towards the gas mixture. Part of the water from the first circuit is selected in the second circuit, in which the second pump 10 that has passed through the heat exchanger 11 and being heated to a temperature exceeding 70oWith that supplied to the heater 5 (from his second entrance). In the heater 5 and the waters of the second circuit, taking away the heat of the hot gas mixture, turns into steam, which then is fed to the input of the input pair combined-cycle plant 1, completing thereby the circulation of water in the second circuit.

In formed by the elements 11, 13, 9, and 12 closed-loop working fluid is compressed by the compressor 12 and condenses, giving up heat in the heat exchanger 11 second water circuit. After the throttle 13, the pressure of the working fluid decreases, it evaporates. The temperature of the working fluid is reduced, which is used for cooling water of the primary circuit circulation in the refrigerator 9. After the refrigerator 9 working tlostanova no heat loss to the environment (due to its release into the water-to-air refrigerator), and it is the redistribution of primary circuit water circulation, where there is an excess of heat, the second circuit water heating.

1. Power plant, containing provided with access to the payload of a combined cycle installation with the input pair, the output of which is connected to the first input of the heater, the first output of which is connected to the first input capacitor, a first output of which is communicated with the environment, the first circuit water circulation, is connected to the second input and the second output capacitor, comprising serially connected first pump and refrigerator, on its first input and first output and the second circuit water circulation, is connected to the input of the input pair of combined cycle gas turbines and to the first circuit water system, including sequentially connected to the second pump and the heater, on his second input and second output, characterized in that it entered the heat exchanger, the compressor and the throttle, the inlet of which is connected with the first heat exchanger output and the output with the second input of the refrigerator, the compressor inlet is connected with the second output of the fridge, and the output to the first input of the heat exchanger formed by this closed contraray loop water circulation.

2. Power plant under item 1, characterized in that the first pump connected between the first output of the refrigerator and a second input capacitor.

3. Power plant under item 1, characterized in that the first pump connected between the second output capacitor and a refrigerator, and the second circuit water is connected to the output of the first pump.

 

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FIELD: heat power and chemical industries, applicable in production of ammonia.

SUBSTANCE: in the method for steam generation at production of ammonia from hydrocarbon gases, saturation of the hydrocarbon gas after desulfurization and/or process air fed to the secondary reforming is effected due to the use of the flue gas of a tube furnace at a temperature of 160 to 580C, preferably within 220 to 480C, by means of water recirculation.

EFFECT: reduced consumption of energy due to reduction of the total amount of generated steam, reduced consumption of feed water, and recovered gases dissolved in the process condensate.

4 cl, 1 dwg

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