Power plant

FIELD: mechanical engineering.

SUBSTANCE: invention relates to power plants on base of diesel engines including exhaust gas heat recovery systems. Proposed power plant contains diesel engine connected with electric generator, tank for hydrocarbon material, main line to deliver hydrocarbon material, heat exchanger for fuel oil, tanks fir fuel oil and light fractions of fuel, heater and flash column, flash column is arranged inside heater housing, and heating element is arranged in space between heater housing and flash column. Heating element is connected with atomizer arranged inside flash column. Gas intake and gas outlet branch pipes of heater communicate with space between heater housing and flash column, and branch pipes to let out light fraction and fuel oil communicate, respectively, with upper and lower parts of inner space of flash column. Hydrocarbon material supply branch pipe communicates with inner space of heating element. Gas intake and gas outlet branch pipes are connected, respectively, with outlet branch pipe of diesel engine and exhaust pipe, and branch pipes to let out light fractions and fuel oil are connected, respectively, with cooling heat exchanger and with fuel oil heat exchanger. Branch pipe to supply hydrocarbon material is connected with hydrocarbon material delivery main line.

EFFECT: reduced heat losses in exhaust gas heat recovery systems designed for producing fuels from hydrocarbon raw material, improved efficiency of heat recovery.

2 cl, 2 dwg

 

The invention relates to the field of engine construction, namely, the power plants based on diesel engines, including heat recovery from exhaust gases. The invention can be used to improve the efficiency of recycling systems of power plants and reduce their size.

Known power plant, equipped with systems of heat recovery from exhaust gases, in which they used to produce diesel fuel from hydrocarbons (Actual problems of theory and practice of modern engine technology: Proceedings of International scientific-technical conference. - Chelyabinsk: publishing house of SUSU, 2003, pp. 203-206). For the implementation of the recycling process uses a heat-exchanger in which heat is transferred from exhaust gas to the hydrocarbon feedstock, as well as evaporative column where the separation of hydrocarbons for fuel oil and light fuel fractions. The recovery boiler and evaporation column is made in the form of separate units. However, this caused a significant loss of useful heat dissipated into the atmosphere by evaporative surface of the pillar and the surface of the pipe connecting the boiler heat exchanger and evaporative column. This leads to reduced efficiency of heat utilization. In addition, the performance of the disposal system significant is but increases its dimensions, since the boiler and column are the large elements of the system.

Closest to the claimed power is installing the patent RU NO. 2200241, F 02 G 5/02, With 10 G 7/00, 2001, publ. 10.03.2003, bull. No. 7.

Power installation comprising a diesel engine connected to an electric generator, diesel engine fuel tank, boiler, connected gazovykh pipe from the outlet of the diesel engine, the supply line to the fluid in the boiler, according to the invention is equipped with a tank for hydrocarbons, which is connected to the supply line to the hydrocarbons in the waste-heat boiler, equipped with evaporative column, which is connected to the input pipe to pipe output of hydrocarbons from the recovery boiler, provided with a heat exchanger for fuel oil, the cavity for hydrocarbons which are included in the supply line to the hydrocarbons in the boiler, provided with a cooling heat exchanger, and the heat exchangers its input connections are connected respectively with the lower and upper output sockets evaporative columns, and is equipped with a tank for fuel oil and tank for light fuel fractions connected with the output nozzles respectively of the heat exchanger for fuel oil and cooling heat exchanger.

However, this power unit has the following defects in the weave.

A significant amount of heat transferred to the recovery system, is dissipated in the atmosphere due to heat transfer between the ambient air and hydrocarbons, the current on the pipe connecting the boiler and the evaporator column. A large length of pipe increases the hydraulic resistance of the system. A significant area of the outer surface of the column forces the use of a large amount of insulating material, in spite of this a lot of heat is lost as a result of heat exchange between the surface of the evaporation column and atmospheric air, thus deteriorating the separation of hydrocarbons into fractions. Since the recovery boiler and evaporation column are the largest elements of the disposal system, running them as separate nodes significantly increases the dimensions of the system.

The invention solves the technical problem of reducing heat loss in the system heat recovery from exhaust gases, increasing the efficiency of heat recovery, as well as the task of reducing the size of the disposal system.

This is achieved by the fact that in a power installation comprising a diesel engine connected to an electric generator, a tank for hydrocarbon raw materials, the supply line to the hydrocarbons, the heat exchanger for fuel oil tanks for fuel oil and light fuel F. the shares, heater (performs the same function as the recovery boiler and evaporation of the column according to the invention evaporative column placed inside the heater in the space between the heater and the evaporator column is located a heating element connected to the atomizer inside the evaporator of the column, while gazovykh and the flue pipe of the heater is in communication with the cavity between the heater and the evaporator casing, and pipes removal of light fractions and removal of oil communicated respectively with the upper and lower parts of the inner space of the evaporating column, pipe supply of hydrocarbons communicated with the inner space of the heating element, and gazovykh and flue pipes connected respectively with the exhaust pipe of a diesel engine and exhaust pipe, the exhaust pipes of light fractions and fuel oil respectively connected to the cooling heat exchanger and a heat exchanger for fuel oil, and the pipe supply of hydrocarbons is connected to the supply line to the hydrocarbon.

The location of the evaporation column inside the heater can significantly reduce thermal and hydraulic losses arising in the current heated up to 300-330°and partially vaporized hydrocarbon is between the heater and evaporative column, as well as thermal losses associated with cooling the outer surface of the evaporation column of atmospheric air. In addition, increases the efficiency of utilization of heat of exhaust gases through the heat transfer between the exhaust gases and divides the inside of the evaporation column fractions of hydrocarbons. Also about 25-40% decrease in dimensions of the system.

The invention is illustrated by drawings, where figure 1 is given a schematic diagram of the power plant system with heat recovery from exhaust gases, figure 2 - drawing of the heater and columns in the section.

The power plant (figure 1) consists of a diesel engine 1 with the air filter 2, an intake pipe 3, the turbocharger 4, the exhaust pipe 5, the fuel tank 6, the fuel filters coarse 7 and 8 thin cleaning, fuel pre-supply pump 9, the fuel high-pressure pump 10. Diesel engine connected to an electric generator 11. The exhaust pipe 5 of the diesel engine is connected to gazovykh pipe 12 of the heater 13. The flue pipe 14 of the heater is connected to the exhaust pipe 15.

Inside the housing 16 of the heater is evaporative column 17. In the cavity And between the housing 16 of the heater and evaporative column 17 posted by the heating element 18, the inner cavity B of which is connected with the nozzle 19 located internally in the cavity In the evaporator of the column 17. Gazovykh 12 and the flue 14 pipe of the heater is connected to the cavity A. Pipe 20 removal of light fractions and the outlet 21 of the removal of fuel oil are connected respectively with the upper and lower parts of the internal cavity In the evaporation column.

The nozzle 22 of the feed hydrocarbon is connected with the inner cavity B of the heating element 18 and with the line of feed of hydrocarbons, comprising a pump 23 and a valve controlling the flow of hydrocarbons 24 and the cavity for hydrocarbon heat exchanger 25 for fuel oil. The pump 23 is connected by a clutch to the shaft of motor 26. Meter 27 temperature set on the socket 21 of the exhaust oil. The nozzle 20 removal of light fractions from the column 17 is connected to the cooling heat exchanger 28 having an air fan 29 is mounted on a motor shaft 26. On the pipeline connecting pipe 20 evaporative column 17 to the cooling heat exchanger 28, and the pipe feeding the hydrocarbon feedstock to the heat exchanger 25 for fuel oil installed the gauges 30. The nozzle 21 of the exhaust oil is connected with the oil cavity of the heat exchanger 25 for fuel oil. The power plant also includes a tank 31 for hydrocarbon raw material tank 32 for fuel oil and tank 33 for light fuel fractions. Each tank has a tube 34 to control the liquid level in the tank. Tanks for fuel oil and light what's the fuel fractions have drain pipes with valves 35 and 36, respectively. Tank 33 for light fuel fractions connected with the fuel tank 6 diesel pipe 37 and a valve 38. On the drain line light fuel fractions in the tank 33 for light fuel fractions has a viewing window 39.

The plant is operated as follows. Hydrocarbons from the tank 31 by a pump 23 driven by an electric motor 26, through the valve 24 controlling the flow of hydrocarbons is fed into the cavity hydrocarbon heat exchanger 25 for fuel oil, where the substrate is heated by heat exchange with the hot oil. Further, the hydrocarbon raw material is fed into the heating element 18 of the heater 13. The exhaust gases of the diesel engine 1 from the exhaust pipe 5 are received in the cavity And the heater 13, is washed by the heating element 18 from the outside and transmit some of the energy of the hydrocarbon feedstock, the temperature of which is raised to the desired value. Next, the exhaust gases through the pipe 14 and the exhaust pipe 15 are released into the atmosphere. Of the heating element 18 raw material enters the nozzle 19 and is sprayed into the cavity In the evaporator of the column 17. Light fuel fractions evaporate and rise into the upper part of the evaporation column, where discharged into the cooling heat exchanger 28, blown air, which is blown by the fan 29, the driven movement is their motor 26. In the cooling heat exchanger 28 is the condensation of the vapor light fuel fractions. After this liquid light fuel fractions are served in a tank 33 for light fuel fractions. The oil flows into the lower part of the evaporator of the column 17 and enters the oil cavity of the heat exchanger 25 where transfers part of the heat of the cold hydrocarbon raw materials. After that, the cooled oil is discharged into the tank 32 for fuel oil. To control the temperature and pressure of the separation products of hydrocarbons, as well as the pressure of hydrocarbons downstream of the pump 23, is provided by the meter 27 temperature and pressure gauges 30. The level control of hydrocarbons and products of its processing in the tanks by using tubes 34. To monitor aggregate state light fuel fractions coming into the tank 33, provided with an inspection window 39. Maintaining the temperature of the oil at the outlet of the column at the required level for different modes of operation of the diesel is the regulation of the flow of hydrocarbons valve 24. By lowering the temperature of the exhaust gases of a diesel engine power plant below the level that provide heating of the hydrocarbon feedstock to the desired temperature, the valve 24 controlling the flow of hydrocarbons is closed.

The selection of the finished products from the tanks is carried out on the drain Patra the Cam with valves 35 in the tank 32 for fuel oil and 36 on the tank 33 for light fuel fractions.

If necessary replenishment of fuel in the fuel tank 6 of the diesel engine 1, the valve 38 is translated in open position and the light fuel fraction from tank 33 through pipe 37 flow into the fuel tank 6 diesel engine that allows you to use them as fuel for diesel engines.

The design of the power plant system with heat recovery from exhaust gases creates optimal conditions for the implementation of the heating processes of hydrocarbons and its separation into fractions, thereby increasing the efficiency of heat recovery from exhaust gases, as well as significantly reducing the dimensions of the disposal system.

The invention can be applied in power plants, equipped with systems of heat recovery from the exhaust gases to increase the efficiency of recycling systems and a significant decrease in their size.

Power installation comprising a diesel engine connected to an electric generator, a tank for hydrocarbon raw materials, the supply line to the hydrocarbons, the heat exchanger for fuel oil tanks for fuel oil and light fuel fractions, heater and evaporative column, characterized in that the evaporation column is placed inside the heater in the space between the heater and the evaporator column is located a heating element connected with resplit the LEM, placed inside the evaporation of the column, while gazovykh and the flue pipe of the heater is in communication with the cavity between the heater and the evaporator casing, and pipes removal of light fractions and removal of oil communicated respectively with the upper and lower parts of the inner space of the evaporating column, pipe supply of hydrocarbons communicated with the inner space of the heating element, and gazovykh and flue pipes connected respectively to the exhaust pipe of a diesel engine and exhaust pipe, the exhaust pipes of light fractions and fuel oil respectively connected to the cooling heat exchanger and a heat exchanger for fuel oil, and the pipe supply of hydrocarbons is connected to the supply line to the hydrocarbon.



 

Same patents:

The invention relates to engine, particularly to a fuel system for internal combustion engines

The invention relates to oxygen-containing fuel composition suitable for use in internal combustion engines with compression ignition, equipped with a heater of the incoming air, the catalytic dehydration of alcohol, suitable for chemical equilibrium conversion of methanol containing up to 20 wt.% water and up to 20 wt.% ethanol or a higher alcohol

The invention relates to a fuel supply system for a carburetor for internal combustion engines

The invention relates to engine

The invention relates to a device for handling combustible mixture carburetor of the internal combustion engine and can be used in the automotive industry

The invention relates to the field of engine development

The invention relates to the field of automotive industry, in particular for internal combustion engines, and can be used in carburetors, working as depleted and enriched mixtures, depending on the load on the engine

The invention relates to energy and transport machine building, in particular to engine

The invention relates to the field of engine development and allows to increase the efficiency of the engine without compromising its operational reliability

The invention relates to mechanical engineering and can be used to drive various mechanisms and vehicles

Power plant // 2200241
The invention relates to the field of engine construction, namely, the power plants based on diesel engines for the generation of electric energy

The invention relates to the field of heat and Stirling engines, is designed as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

The invention relates to the field of engineering, namely the engine, and allows to increase the efficiency of the device for heat recovery from exhaust gases of internal combustion engines

The invention relates to mechanical engineering, in particular the engine

Gravity-heat engine // 2180703
The invention relates to energy

Power plant // 2180048
The invention relates to power plants with internal combustion engines and steam engines (PM), utilizing the heat of exhaust gases

Gravity-heat engine // 2180047
The invention relates to engines fueled by low-grade heat

The invention relates to the field of power engineering and energy converters, direct cycle (e.g., Stirling engines or internal combustion engines), is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

Power plant // 2255238

FIELD: mechanical engineering.

SUBSTANCE: invention relates to power plants on base of diesel engines including exhaust gas heat recovery systems. Proposed power plant contains diesel engine connected with electric generator, tank for hydrocarbon material, main line to deliver hydrocarbon material, heat exchanger for fuel oil, tanks fir fuel oil and light fractions of fuel, heater and flash column, flash column is arranged inside heater housing, and heating element is arranged in space between heater housing and flash column. Heating element is connected with atomizer arranged inside flash column. Gas intake and gas outlet branch pipes of heater communicate with space between heater housing and flash column, and branch pipes to let out light fraction and fuel oil communicate, respectively, with upper and lower parts of inner space of flash column. Hydrocarbon material supply branch pipe communicates with inner space of heating element. Gas intake and gas outlet branch pipes are connected, respectively, with outlet branch pipe of diesel engine and exhaust pipe, and branch pipes to let out light fractions and fuel oil are connected, respectively, with cooling heat exchanger and with fuel oil heat exchanger. Branch pipe to supply hydrocarbon material is connected with hydrocarbon material delivery main line.

EFFECT: reduced heat losses in exhaust gas heat recovery systems designed for producing fuels from hydrocarbon raw material, improved efficiency of heat recovery.

2 cl, 2 dwg

Up!