SU1249265A1 - Device for burning liquid fuel and waste - Google Patents

Description

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The invention relates to devices for burning fuel and combustible liquid waste and can be used in the power industry and other branches of the national economy, where disposal of industrial emissions is required.

The purpose of the invention is to reduce the specific consumption of the sprayer and to ensure the effective disposal of low-calorie liquid waste.

The drawing shows a diagram of the device that implements the method.

The device contains a high-pressure fan 1, a fuel line 2, a conical atomizer 3, diaphragm 4 located in the discharge port, and a collecting cavity 5 of the separated fuel, which communicates in the lower part with the pump 6, and in the upper part with the atomizer 7 recirculation line The pump is connected to the tube 8 for supplying separated fuel to the core of the flow in front of the diaphragm. The suction inlet 9 communicates with the duct 10 of the intake of recirculating gases from the furnace 11. In the suction inlet 9 there is a regulating damper 12. A regulating valve 13 is located on the atomizer recirculation line 7 and a control valve 14 on the fuel line 2.

The device works as follows.

The fuel through line 2 is supplied to a conical atomizer 3. Air in an amount necessary for combustion is sucked from the atmosphere. The fuel-air mixture with fan blades is fed to the pressure head of the tubes with diaphragm 4. Large drops, separated due to the centrifugal effect and the diaphragm, are separated in the collecting cavity 5, pumped off by the pump 6 and sprayed with the flow entering the diaphragm. A portion of the nebulizer is recirculated to the suction inlet 9 through line 7 and box Y due to vacuum. The heating and partial evaporation of the fuel is carried out by flue gases recirculating from the furnace 11. Ballasting of the air-fuel mixture with flue gases ensures the explosion-safety of the circuit. The performance of the device is regulated by the valve 14. With the help of the gate 12, setting 49265

The required ratio of the amount of gases and air in the stream is cast at different caloric intake of fuel.

5 The device was tested at CHP plants when burning polluted sewage with fuel oil content l / 10%. Wastewater was sprayed by the VVD fan according to the known and

10 proposed methods.

The test results are shown in the table.

When using the proposed device, the dispenser consumption is reduced more than three times and the power consumption is reduced in comparison with the known one.

In the proposed device, the reduction of the specific consumption of the spray

20 is due to the fact that the separation of large droplets of fuel is carried out only in the peripheral zone of the cross section of the discharge pipe of the fan using a separation diaphragm. At the exit from the injection nozzle, the concentration of large droplets due to the centrifugal effect is uneven in the cross section of the nozzle and maximum in its lower

30 peripheral zone; The use of a separating diaphragm, for example, in comparison with gravitational-inertial separation, allows to reduce the proportion of fuel separated from the flow of the air-fuel mixture, since there is no separation in the core of the flow. The separation space in front of the diaphragm is in communication with the recirculation channel with the inlet nozzle, due to which part of the solvent is circulated in the suction nozzle and the fraction of the nebulizer entering the furnace decreases. The separated fuel is pumped out by the pump and enters the tube installed along the axis of the discharge pipe in front of the diaphragm. At the core of the stream, fuel is atomized due to the kinetic energy of the fuel-air mixture. Thus, the specific consumption of the sprayer is reduced.

The use of the proposed invention allows reliably, in a wide range of capacity control, to burn liquid fuel and to make fire disposal of watered low-calorie industrial waste with the disposal of combustion products in power plants.

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motor efficiency, d

V-belt transmission efficiency

0.9 0.98

Fan efficiency j.

wemt

/ (

The flow rate of the liquid supplied to the spray C, kg / h

Amount of the sped-up GP liquid, kg / h

Specific consumption of the atomizer b,

Editor A. Sabo

Compiled by T. Lepakhina

Tehred E. Chizhmar Proofreader M. Samborska

Order 4217/37 Circulation 514. Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

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Claims (2)

1. DEVICE FOR BURNING- LIQUID FUEL AND WASTE, containing a fan with a rotary atomizer on the impeller and a fuel nozzle on the suction, characterized in that, in order to reduce the specific consumption of the atomizer and ensure the effective neutralization of low-calorie liquid waste, it is equipped with a separating diaphragm installed in the discharge nozzle of the fan , the separation space in front of which has a recirculation channel in communication with the inlet pipe. 2. The device according to π.1; characterized in that an atomizer is installed in front of the diaphragm.