SU663203A1 - Method of heating conveyer oven - Google Patents

Description

(54) METHOD OF HEATING CONVEYOR FURNACE

The method is carried out by the following obrleom,

: nprf furnaces into one of the burners, fuel and air and the discharge of their gas in the combustion chamber, and the combustion products are led through the recirculation duct into the chimney mine working space. Such an ignition system increases the use of the furnace without theaccoteTb, eliminating the possibility of the claps heating up. After heating the furnace, cut off the combustion products in the recirculation channel and direct them to the working area of the furnace. Exhaust combustion products from the furnace working space are supplied by an exhauster into the gas exhaust duct. Before the exhauster, pbtod | gas is diluted with air from the environment to a temperature determined by. heat resistance of the exhauster. After the exhauster, a part of the products of the crust is supplied to the diving pipe, and a part of the air supply is recycled. the channel, together with the topdav - directly in the go) of the furnace, quantity 4–9, each kcal of heat and produced in the environment of the fireplaces.

This allows the use of recirculated oxygen as well as its physical organization to control the combustion process.

When recirculated nta is fed into the burner, its kinetic energy is used for fuel suction, gas turbine and electricity are reduced for gas transportation, CjtoraifOie fuel S recirculated fuel completely eliminates the need for air and energy costs for its transportation.

Dilution of the shell with NT to 680-75 ° C The combustion products are distributed over the zones of the furnace working space.

Wheels for anti-flocking treatment are fed by a conveyor to the vestibule in. the working space of the furnace, where the temperature is maintained at 600-65 ° C,

Mixing the combustion products with the fuel directly in the combustion chamber of the furnace, due to their interaction with each other, ensures that

equals temperature by volume of the mixture. The temperature difference in the flue gas boring furnace, as shown by the research Institute, decreases from 70-120 С to 3.5 С,

which indicates a quality mix. shenei. It simplifies; temperature control of the furnace working space

Dilution of the combustion products with fuel then (1Co recycle is more efficient and economical means than diluting them with cold air. Economy in this case is achieved by using hot air instead of cold air to lower the caloric temperature. 380-42bSu

Analysis of the operation of the proposed method shows the zone

Note that fuel economy is SOTS% per kiln while maintaining the required process temperature. KROP. in addition, the power consumption of the blowers is eliminated.

Claims (2)

Invention Formula  1, The method of heating conveyor furnace, including the supply of fuel to the burners, burning it in the chambers of the remote furnaces, feeding recirculated nTA And combustion products with a temperature of 680-7SO C over the zones 35 of the furnace working space, from the fuel supply and from the fact that, in order to remove the fuel and electricity, the recirculated fuel is fed into the chambers of the external fireboxes simultaneously with the fuel, and the fuel is burned in the recirculation medium nta 2. Method PO.P.1, it is also distinguished by the fact that the recycle nt is fed to the burners in the amount of 4-9 m per  every 1 10 10 kcal of fuel heat. Sources of information taken into account in the examination 1. US patent Ns 3S27448, cl. 266S, 1970. ° 2. Drawing of Ukrgiproliz No. D-9OO01 1971.