SU1242682A1 - Method of burning fuel - Google Patents

Description

I

The invention relates to power generation and can be used for the production of hot gases in various thermal engineering devices.

The aim of the invention is to improve the economy.

The drawing shows a device for the combustion of fuel that implements the proposed process.

The device contains a nozzle I, mounted in a pulsed combustion chamber 2, which is equipped with an aerodynamic valve 3 and a tangentially connected resonant tube 4. The latter is also tangentially connected to 5, along which the air line is installed b. A fuel line 7 is inserted into the furnace 5. The entire device is enclosed by a housing 8 having a Bozdoupodravushchiy nozzle 9

The device works as follows.

Through the air inlet 9 is supplied, the air that enters the furnace 5 through the air line 6 and, simultaneously, through the aerodynamic valve 3, into the pulsating combustion chamber 2. The igniter (not shown) is switched on in the pulsating combustion chamber 2, fuel is supplied through the injector 1. The ignition and combustion of the combustible mixture causes the pressure in chamber 2 to increase, which causes air to be disconnected from it. Under the effect of overpressure in chamber 2, the combustion products are ejected through the resonant tube 4 and the aerodynamic valve 3 into the furnace 5. At the same time, vacuum 2 is created in the chamber, as a result of which air begins to flow again, as well as some of the combustion products left in the resonant tube 4. Combustion burners ignite the fresh combustible mixture and this cycle repeats with a frequency determined by the natural frequency of the chamber -2. After the heating of the firebox 5 into it, fuel line 7 feeds the editor, Volkov

Compiled by E.Lzykov Tehred L.Oleinik

Order 3684/34

Circulation 514Subscribe

VNSHPI USSR State Committee

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

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

2426822

71a part of the fuel that is picked up by the combustion products entering the furnace 5 through the resonance pipe 4 and moves with it

5 in a single swirling flow, mixing with the direct flow of air entering the furnace 5 through the air duct 6. At the outlet of the furnace 5, the combustion products ignite the combustible

10 mixture.

PRI m e R). The combustion of diesel fuel is carried out according to the proposed method and device. CNG fuel consumption ranges from 3 to 150 kg / h.,

t5 is the main fuel consumption for the firebox. It is 150 kg / h. The amplitude values: the pressure variations in the experiments are 300-500 mm aq., The frequency of the acoustic band 20 is 60-125 Hz, the temperature

The flue gas products at the exit of the 900-1200 C device. The ratio of the flow rates of the fuels supplied to the CNG and the furnace is changed in the range of 0.02-1.0. In this case, the composition of the combustion products and the presence of soot in them, as well as the noise level during operation of the device, are determined, and the acoustic power consumption is calculated for each unit of fuel burned.

With a ratio of fuel consumption values not exceeding a value of .., 0.03, the intensification of fuel burnup is not observed. In the range of fuel consumption ratios of 0.05-0.1, there is a significant increase in the burnout and fuel fullness and a decrease in the soot content in the combustion products. Further increase in the value of the research institute for the ratio of fuel consumption is inexpedient, since it is practical. The ky does not affect the completeness of the burnout — toshwa and the soot content of the combustion products, but it leads to a very strong increase in the noise level, the reduction of which to acceptable values presents considerable difficulties and is associated with significant costs.

Correspondent M. Mac Simishinets

Claims (1)

FUEL COMBUSTION METHOD 'by preliminary burning part of it in a stream of primary air in a pulsating combustion chamber, mixing the resulting products, burning with the rest of the fuel and supplying the resulting mixture, as well as secondary air for afterburning into the furnace, characterized in that, in order to increase efficiency, the mixture is fed into the furnace in the form of a tangential jet, and 10–20 times less fuel is sent for preliminary combustion than for afterburning in the furnace. , ' _M SU .1242682 1 1242682