Combi boiler

 

(57) Abstract:

The inventive combination boiler is designed for the simultaneous production of heat, cold and electricity. Boiler system includes a gas turbine generator, steam turbine, low-pressure steam and hot water boiler. Includes a bypass portion of steam from the steam generator and after a steam turbine into the combustion chamber with a working gas turbine gas mixture. The distinctive element of this scheme is the presence of the gas-cooler-condenser surface type that allows vapor from combustion boilers operating on the vapor-gas mixture and is included for this purpose before the evaporator of the refrigeration unit, thereby improving the efficiency of the refrigeration coefficient of refrigeration systems used for the production of cold. 1 Il.

The invention relates to a boiler designed for the simultaneous production of heat, cold and electricity.

Boilers of this kind is unknown.

However, the analogue of such a boiler is an industrial CHP with combined cycle Converter and a low-pressure steam, containing in addition to these steam and gas the flue gases of the gas turbine, and heating the heater working on a couple of the last stage of the turbine, and the second steam condensing steam turbine, running on steam from the boiler during periods when falls cogeneration load and there is an excess of steam in step with backpressure.

Despite the undoubted economic benefits of this setup compared to the steam turbine CHP inherent and well-known disadvantages:

the need to install any additional expensive equipment - condensing steam turbine, condenser, circulating pumps, and in most cases - the tower (see similar (Sazanov B. C. and other Industrial thermal power stations. Under the General editorship of E. N. Sokolova, M.: Energy, 1967, Fig. 10-7).

The weaknesses observed in similar eliminated in the other combined-cycle power plant for CHP, where the excess steam from the boiler when the load of the steam turbine is fed directly into the combustion chamber of a gas turbine, which operates on the vapor-gas mixture, which not only eliminates the need to install an additional turbine, but also increases the capacity of the gas turbine (see ibid S. 178, Fig. 10-5).

Unfortunately, this scheme PR is supplied to the furnace of the steam generator, and then emitted into the atmosphere, it takes a lot of water to compensate for losses of the working fluid, in contact flue gases are formed with pairs of diluted acid, which through chimney outside, causing acid rain and other undesirable consequences.

The purpose of the invention is to increase the efficiency of fuel combustion in boilers without harmful influence on the environment.

The objective is achieved with a combination boiler, part of the equipment which includes a gas turbine with a combustion chamber, a compressor and an electric generator, a steam turbine back pressure with his generator, low pressure steam and hot water boiler flue gases of the gas turbine, and when the load of the steam turbine by heat - gas mixture formed in the combustion chamber when the mixture of combustion products and steam supplied to the camera directly from the steam generator and (or) extraction back pressure steam turbine, extraction heater, use for heating network water vapor from extraction back pressure steam turbine, the network pump, the deaerator feed water with p selection of back pressure to the combustion chamber, and additionally established contact cooler-condenser, evaporator, compressor refrigerant vapor with its motor, condenser refrigerant vapor and throttle refrigerant vapor, and contact the cooler-condenser is installed outside the boiler, and its output on the gas side is connected with the inlet of the evaporator, the output of which is connected to the exhauster, the input side of the refrigerant vapor is connected with the output inductor and the output side of the refrigerant through the compressor with the inlet of the condenser, whose output, in turn, is connected to the inductor and the input contact of the cooler-condenser is connected to a source of water, supplied by a pump source water through the heat exchanger expander continuous blowdown (pump and a heat exchanger not shown in the figure), the output contact of the cooler-condenser is connected to the deaerator.

The drawing shows a schematic diagram of the setup.

The installation includes an air compressor 1, a combustion chamber 2, the gas turbine 3 and the generator 4, which together form a gas turbine generator, steam generator 5, a steam turbine 6 generator 7, cogeneration steam heater 8 with network water pump 9, which serves for heating voooom 11, proposed (new) elements of the position: contact cooler-condenser 12, which serves to condense water vapor contained in the gas mixture, the evaporator of the refrigeration unit 13, the exhaust fan 14 and the chimney 15 (PP 14, 15 well - known elements), compressor refrigerant vapor 16 with its engine 17, the condenser of the refrigerant vapor 18 with the orifice 19, and two regulating valves 20 and 21, of fundamental importance for the operation of the plant, and boiler 22.

Shown in the drawing, the device operates as follows.

The air compressed by the compressor 1, is fed into the combustion chamber at 750 - 800oC, flows into the gas turbine 3, which actuates the compressor 1, and excess capacity gives the electric generator 4. The combustion products of the gas turbine 3 is discharged into the steam generator 5 and the boiler 22, where in their environment additional fuel is burned, and the generated steam is supplied to steam turbine 6, and technology directly to consumers, same steam turbine drives the generator 7, and the exhaust steam enters the heating heater 3 heats the net water supplied by the network pump 9, and the steam condensate is discharged into the ATOR 10 receives raw water; last contact cooler-condenser 12 where it is heated gases leaving the boiler, and the water (not shown) and the exhaust gases come later in the evaporator of the refrigeration unit 13, where it is additionally cooled, giving heat to the evaporation of the refrigerant, such as ammonia, which is the working fluid of the refrigeration unit. Refrigerant compressed by the compressor 16 driven by motor 17 and sent to the condenser 18, which take heat from the refrigerating chamber and fed to the reactor 19, where the pressure is reduced, resulting in their partial evaporation.

The operation mode described above relates to a case full heating load (current mode). In the summer, when heating systems and ventilation systems turned off and heat the heater 8 only works on hot water, "odd couples" from a selection of back-pressure steam turbine 6 through the steam valve 20 is directed into the combustion chamber 2, where it is admixed to the combustion products of the fuel, increasing the flow rate of the working fluid through the gas turbine, thereby compensating the loss of power of the steam turbine, when the specified bypass pair is not enough, open valve 21, a bypass>/P>Boiler 22 is used to cover the heat load of the boiler in accordance with the coefficient of heat, this provides a partial combustion of the fuel in hot water 22, and steam 5 boilers.

Thus, the proposed combination boiler room allows, along with the traditional production of hot water and steam to produce electricity and cold and although the specific fuel consumption while, at first glance, higher than CHP (due to lower steam at the boiler room than CHP), the combined production of various types of energy in the boiler room is very advantageous not only from the point of view of the consumer, but also the States because it is easy to show that the additional electricity and the cold produced in the boiler room without the cost of additional fuel, but only due to a more rational organization of the technological process: exceptions reduction of steam from the boiler on the heating needs and complete the add-in cycle.

Therefore, despite the marked lower thermal efficiency than the TPP, this scheme remains effective on all the time will be built steam and water boilers, i.e. always.

Combi boiler house containing the gas turbine combustor, compressor and generator, steam turbine back pressure with his generator, low pressure steam generator operating on the flue gases of a gas turbine, characterized in that the installation further comprises a hot water boiler the flue gases of the gas turbine, and when the load of the steam turbine by heat - gas mixture formed in the combustion chamber when the mixture of combustion products and steam supplied to the camera directly from the steam generator and(or) back pressure steam turbine exhaust steam turbine), heating the heater, used for heating network water steam from the back pressure steam turbine, feedwater deaerators with a nutrient pump, exhaust and pipe, two regulating valves on the steam lines from the boiler to the combustion chamber and the back pressure to the chamber garantirem, a condenser for the refrigerant and the throttle vapor refrigerant, and the contact of the cooler-condenser is installed outside the boiler, and its output on the gas side is connected with the inlet of the evaporator, the output of which is connected to the exhauster, the input side of the vapor refrigerant is connected with the output inductor and the output side of the refrigerant through the compressor with the inlet of the condenser, whose output in turn is connected to the inductor and the input contact of the cooler-condenser is connected to the source of water supplied by a pump source water through the heat exchanger expander continuous blowdown, the output contact of the cooler-condenser is connected to the deaerator.

 

Same patents:

The invention relates to the field of converting thermal energy into mechanical energy using a working fluid, in particular, with the purpose of generating electricity, but is not limited to this application

The invention relates to a power system and can be used in combined cycle plants (CCGT) with discharge gases of the gas turbine (GT) in the boiler is intended primarily for combined heat and electric energy

The invention relates to a device driven by the energy of the jet of the working environment, namely the steam turbine devices

Steam generator // 2079684
The invention relates to the field of power systems, preferably a gas turbine, is used as the working fluid vapor generated by direct mixing palletirovanie component with hot gas

the product of the combustion of hydrogen in oxygen, and more specifically, to the designs of steam generators

The invention relates to the production of heat and electricity, most particularly to a steam turbine plants using circulating cooling systems with cooling towers

The invention relates to engine, namely piston engine with external heat supply, operating on a closed regenerative cycle

The invention relates to a power system and can be used in the creation and reconstruction of combined-cycle plants for electricity and heat production based on natural gas, mainly methane

Compressor // 2032813
The invention relates to designs of compressors dynamic action blade type, and more particularly to vapor compressors

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

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 the mean-pressure steam used for the process of steam reforming and/or for the compressor drives is subjected to humidification by injection of the process condensate or feed water, and the obtained humidified steam is overheated by the heat of the flue gas in a unit of the heat-using equipment of the reforming tube furnace.

EFFECT: reduced consumption of energy due to reduction of the amount of generated steam and reduced of the amount of generated steam and reduced consumption of feed water; provided additional cleaning of the process condensate and recovering of gases dissolved in it in the process of steam humidification in the mass transfer device.

2 cl, 1 dwg

FIELD: power engineering.

SUBSTANCE: proposed steam-turbine plant for geothermal power station includes primary circuit consisting of geothermal circulation system and secondary circuit consisting of steam-turbine plant cycle. To increase thermodynamic efficiency of utilization of geothermal waters, plant is furnished additionally with evaporator, heat exchanger, gas-expansion machine and circulating pump. Mass flow rate of working medium getting into primary interwell heat exchanger greatly exceeds flow rate of medium circulating in steam turbine plant circuit. Working medium heated to saturation temperature is divided on surface into two flows. First flow gets into evaporator and further on into turbine and condenser, second flow is directed into heat exchanger whereto cooling water is directed from condenser for heating. Said water, after heating, is fed to low-potential heat consumers.

EFFECT: increased efficiency of power cycle at maximum decrease of temperature of waste thermal water.

1 dwg

FIELD: heat power engineering.

SUBSTANCE: invention relates to stationary thermal power stations of large and medium rating. According to invention, energy of combusted fuel is used three times, namely to create reactive thrust, to operate in gas turbine and to generate steam for steam turbine and which provide high efficiency of power station summing up efficiencies of reactive engine, gas and steam turbines. Depending on required power, from one to three similar-type electric generators can be connected in reactive-gas turbine cycle. Power rating of electric generator for steam cycle is chosen depending on heat generated at reactive-gas turbine cycle. Linear dimensions of power plant converting heat energy of fuel into mechanical energy are scaled depending on power output of designed power station.

EFFECT: simplified design and technology of manufacture, repair and servicing of power station.

4 dwg

FIELD: power engineering.

SUBSTANCE: proposed gas-steam thermoelectric plant contains gas-steam turbine unit with high-pressure gas turbine, counterpressure steam turbine, power-generating and ecological steam lines, steam-gas mixture heat recovery unit with steam recovery boiler, gas-water heater, gas cooler-condenser, separated water heat recovery unit. Low-pressure steam-gas turbine and afterburner chamber are arranged additionally in gas-steam turbine unit, afterburner chamber being installed between high-pressure gas turbine and low-pressure steam-gas turbine. Output of counterpressure steam turbine is connected by ecological steam line with output of high-pressure gas turbine and with after-burner chamber.

EFFECT: provision of designing of gas-steam thermoelectric plant of higher power output and economy using existing counterpressure steam turbines with standard initial parameters of steam.

2 dwg

FIELD: power engineering; ship engines.

SUBSTANCE: according to proposed method atmospheric air is compressed, contactly cooled and regeneratively heated by heat of waste steam-gas mixture, and fuel is combusted in said air with supply of power-generating steam flow into fuel combustion zone. Steam-gas mixture, thus formed, is expanded and useful work of expansion is used for compressing air and executing external work, generating electric energy for driving different mechanisms, for instance, vehicles. heat of steam-gas mixture, after expansion and regenerative removal of heat, is recovered for generation of steam, steam-gas mixture is cooled, its steam component is condensed and condensate, thus formed, is cooled and used for cooling and condensing of steam-gas mixture. Cooling of compressed moistened air is carried out at its contact with water in saturated state, or with saturated water vapor formed at recovery of heat of waste steam-gas mixture, and overheated steam is used as power-generating steam flow and for cooling of steam-gas turbine.

EFFECT: increased thermal economy of gas-steam plant.

2 dwg

FIELD: power engineering.

SUBSTANCE: working medium in proposed steam-gas turbine plant is mixture of combustion products and steam formed in mixing chamber before steam-gas turbine. Combustion products are formed in combustion chamber located after compressor, and steam is formed in heat exchanger-evaporator located after steam-gas turbine. Flow rate of steam is not less than 15% of flow rate of gas. Thermal efficiency of steam-gas turbine plant does not exceed 60%.

EFFECT: possibility of creating aircraft engine on base of steam-gas turbine plant 3-4 times exceeding shaft-turbine engines and turboprop engines by specific power and 2-3 times, by economy.

3 cl, 6 dwg

FIELD: power engineering.

SUBSTANCE: according to proposed method of operation of gas-steam thermoelectric plant, atmospheric air is compressed in compressor and fuel is combustion in said air, useful work of high-pressure turbine is used for compressing the air, useful work of low-pressure turbine is used to drive electric generator and generate power. Heat of waste steam-gas mixture is recovered for generation of superheated steam. Superheated steam is expanded in counterpressure steam turbine whose useful work is used for generation of power, and "ecological" steam expanded in counterpressure steam turbine is fed to combustion products coming out of high-pressure gas turbine, and "power generating: steam is fed into fuel burning zone of additional combustion chamber.

EFFECT: increased power and improved economy of gas-steam thermoelectric plant, possibility of use of existing gas and steam turbines with standard parameters of steam for creating said thermoelectric plant.

2 dwg

Gas-steam plant // 2273741

FIELD: power engineering, gas industry, shipbuilding.

SUBSTANCE: proposed gas-steam plant contains gas-steam turbine unit with air cleaner-air cooler, air compressor, regenerator and steam-gas turbine, and steam-gas mixture heat recovery unit with evaporator and steam superheater. Gas-steam turbine unit is furnished additionally with mixing chamber arranged between air compressor and regenerator. Steam-gas mixture heat recovery unit is connected additionally by pipeline coupling evaporator with mixing chamber of gas-steam turbine unit and steam superheater with cooling system of steam-gas turbine of gas-steam turbine unit.

EFFECT: increased specific power and efficiency of plant.

2 dwg

FIELD: power engineering.

SUBSTANCE: invention relates to methods of modernization of existing steam turbine thermoelectric plants. Proposed method of operation of steam-turbine thermoelectric plant with-turbine set with stepped expansion of combustion products and intermediate supply of heat of fuel comes to the following: heat of combustion products expanded in gas-turbine unit is recovered, high-pressure steam is generated and expanded in steam turbines of thermoelectric plants. To generate high pressure steam, feed water is used deaerated in thermoelectric plant. Said feed water is deaerated additionally by vacuum method. Steam condensate of steam turbines of thermoelectric plant is divided into two flows, one of which is directed for vacuum deaeration and the other is heated in low-pressure heaters of steam turbines, is deaerated at elevated pressure and is used as heating agent for vacuum deaeration of feed water.

EFFECT: increased power output and economy of thermoelectric plant at moderate capital outlays.

2 dwg

Up!