Exhaust installation

 

(57) Abstract:

Usage: devices in blast furnaces for industrial use, such as metal, steklovarennyh, furnaces of thermal power plants. The inventive exhaust system includes a gas turbine circuit, the ejector and the secondary furnace will produce the camera. Gas turbine circuit includes an air compressor, combustion chamber, gas turbine and the output nozzle. The gas turbine drives an air compressor, furnace fan and the exhaust fan. Coming from the output nozzle of the combustion products ejection from the atmosphere, mixed with air from the fan and into the secondary furnace will produce the camera, and then into the furnace. The installation will allow you to do without an external source of mechanical energy and uses the chemical energy of the fuel burned in the gas turbine circuit. 2 C. p. F.-ly, 2 Il.

The invention relates to devices for blast furnaces for industrial purposes, such as steel, steklovarennyh, furnaces of thermal power plants and other

Known exhaust installation comprising a fan and an exhaust fan driven by two third-party sources, such as electric motors [1]

The closest on-tereasa United with the furnace air and flue paths dened respectively by the fan and exhaust fan [2]

A disadvantage of the known installation is that the installation requires the motor to drive the fan and exhaust fan, given that these devices typically consume more power, and greatly increase the dimensions of the motors, is complicated by their regulation.

The technical result of the present invention is to increase efficiency by combining in a single device the functions of the blower and its drive.

This technical result is achieved by the fact that the famous draught installation comprising United with the furnace air and flue paths dened respectively by a fan, exhaust fan, gas turbine equipped with a circuit in the form of consecutive stream gas air compressor, combustion chamber, gas turbine and the output nozzle, air ejector and the secondary furnace will produce the camera, while the compressor and turbine mounted on the same shaft, an ejector is installed on the output nozzle, the ejector and the gas-turbine circuit is connected to the air path in parallel to each other, the secondary furnace will produce a camera is connected to the air path between the gas path and combustion chamber, and gas turbine circuit is completed from power prigotovitelno also in the form of the free turbine, posted by air duct in the flow behind the exit nozzle of the gas turbine circuit and kinematically associated with the exhauster.

In Fig.1 shows an exhaust installation with mechanical transmission between the shaft of the gas turbine circuit and the smoke exhauster; Fig.2 installation with a free turbine connected to the exhaust fan.

Draft setting contains 1 air and flue 2 paths connected to the furnace 3. In the air tract 1, a fan 4, in the flue tract 2 exhaust fans 5. Gas turbine circuit 6 and the ejector 7 is connected to the air path in parallel to each other. Gas turbine circuit 6 consists of a consecutive stream of gases of the air compressor 8, the combustion chamber 9, the gas turbine 10 and the output nozzle 11. Air compressor 8 and the gas turbine 10 is installed on the same shaft. The ejector 7 is installed on the output nozzle 11. Gas turbine circuit is performed with a power drive to the shaft of the exhaust fan 5. The actuator may be in the form of mechanical transmission 12. The actuator may be in the form of a free turbine 13, placed in the air path 1 in the stream beyond the outlet nozzle 11 of the gas turbine circuit 6 and kinematically associated with the exhauster 5. The secondary furnace will produce the camera 14 is and works as follows.

In the combustion chamber 9 is supplied with liquid or gaseous fuel and compressed air from the air compressor 8. The combustion products are first on the gas turbine 10 of a gas turbine circuit 6, and then on the free turbine 13 and lead them on rotation. The torque is transmitted to the air compressor 8, the fan 4 and the exhaust fan 5.

After output from the output nozzle 11 hot products of combustion ejection the air in the ejector 7, and is mixed with air coming from the fan 4. Diluted thus the combustion products enter the secondary furnace will produce chamber 14, where it is full combustion, and then fed into the furnace 3. Gases are exhausted from the furnace 3 by the exhaust fan 5. Thus, the proposed draft installation requires no outside source of mechanical energy and uses the chemical energy of the fuel burned in the combustion chamber of the gas turbine circuit.

1. DRAUGHT INSTALLATION comprising United with the furnace air and flue paths dened respectively by the fan and exhaust fan, characterized in that it is equipped with a gas turbine circuit in the form of a consecutive stream of gases air combretum the compressor and turbine mounted on the same shaft, the ejector is installed on the output nozzle, the ejector and the gas-turbine circuit is connected to the air path in parallel to each other, the secondary furnace will produce a camera is connected to the air path between the gas path and combustion chamber, and gas turbine circuit is performed with a power drive to the shaft of the exhauster.

2. Installation under item 1, characterized in that the actuator is made in the form of a manual transmission.

3. Installation under item 1, characterized in that the actuator is made in the form of the free turbine placed in the air path in the flow behind the exit nozzle of the gas turbine circuit and kinematically associated with the exhauster.

 

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