SU1688044A2 - Burner device - Google Patents

Description

The invention relates to energy and can be used for burning gas, liquid, solid fuels (jointly or separately) with low emissions of harmful oxides from the combustion products into the surrounding atmosphere in power plants and boiler plants, as well as in the metallurgical industry.

The purpose of the invention is to expand the scope of application of the burner.

FIG. 1 shows a burner, a longitudinal section; in fig. 2 is a section A-A in FIG. one.

The burner device includes an air-supplying cylindrical body 1 with a peripheral fuel manifold 2 with output radial nozzles 3, a screw swirl 4 with blades 5, a central fuel pipe 6 and radial output nozzles 7.

Between the fuel pipe 6 and the housing 1 is additionally installed pipe 8

supply air mixture or air, forming annular channels with them.

The burner device further comprises a water collector 9 mounted outside the housing 1 and having radial outlet nozzles 10 positioned in front of the swirler 4 along the air course, and a water nozzle 11 mounted along the axis of the fuel pipe 6 with the possibility of longitudinal movement.

The burner device operates as follows.

When operating on liquid fuel, the air blows to the housing 1 and is uniformly distributed in the channels between the vanes 5 of the whirlwind 4, through the output nozzles 3 of the fuel manifold 2 placed in front of the swirler 4, along the air flow, the blades 5 swirl 4, the fuel jets interact with the oncoming air flow and the outer surface of the nozzle 8, and then with the peripheral stream of secondary air.

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To suppress the formation of harmful substances in the combustion products, water can be injected separately or jointly through the retractable nozzle 11 into the core of the torch and the flue gases can be mixed into the secondary air (or water through the outlet nozzles 10).

When working on coal dust together With liquid fuel (for example, when burning ash coal) air is supplied through pipe 8. coal dust, and the secondary air is fed into the housing 1 into which, in front of the swirler 4, liquid fuel is injected through the exit nozzles 3 along the air course.

In this way, the efficiency of burning coal dust is enhanced by the peripheral illumination with liquid fuel (for example, fuel oil).

In order to suppress the formation of harmful oxides in the combustion products, water is then injected through the exit nozzles 10 and the nozzle 11.

When coal dust works together with gas fuel, air enters through pipe 8 and coal dust enters gas fuel through nozzles 7, and through housing 1

- secondary air; Thus, an increase in the efficiency of burning coal dust is achieved due to its intensive mixing with gas fuel.

In order to suppress the formation of harmful oxides in the combustion products, it is advisable to inject water through the nozzle 11 and mix recirculated flue gases into the secondary air,

When working simultaneously on coal dust, liquid and gas fuel in the housing 1 enters the secondary air in the pipe 8

Aerosmix, through exit nozzles 3 - liquid fuel, through exit nozzles 7 - gas fuel.

To suppress the formation of toxic oxides in the combustion products, water is injected through the nozzle 11 and outlet nozzles 10, along the swirler 4 the fuel interacts with the vortex air flow; a cut from housing 1 is formed

a cyclone-flowing jet of a uniformly mixed mixture of air with fine droplets of fuel,

To reduce the concentration of harmful oxides in the combustion products when burning liquid fuel, firstly, through the outlet radial nozzles 10 of the water collector 9, water is injected into the inlet of the swirler 4. The water leaving the housing 1 is in the form

fine droplets evenly mixed with the working mixture (fuel-air) and reduces the temperature of combustion in the flare; secondly, it is possible separately or in combination with the above water injection through the pipe 8 to recirculate flue gases, which, passing through the swirler, will be intensively mixed into the combustion plume and thereby reduce the combustion temperature.

When working on gas fuel (for example, natural gas) air enters the pipe 8 and is evenly distributed in the channels between the blades 5, the swirler 4, in front of the swirler 4 along the flow

output nozzles 7 of the fuel tube b are supplied with equal amounts of fuel to each of the lower interloop channels of the swirler 4; At the exit of the burner, a cyclone-flowing jet of a uniformly mixed mixture of air and gas fuel is formed.

In order to suppress the formation of harmful oxides in the combustion products, firstly water is injected through the nozzle 11; second, it is possible separately or together with water injection to recirculate the flue gases through the housing 1 and then through the swirler 4 in order to reduce the combustion temperature.

When working on solid fuels (coal dust), air together with coal dust enters the nozzle 8 and further into the inter-blade channels of the swirler 4; at the same time, a secondary

air; At the exit from the burner, the internal pulverized swirling jet and the secondary air are mixed.

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Editor A. Dolinich

Compiled by L. Babicheva

Tehred M. MorgentalKorrektor A. Osaulenko

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Claims (2)

(54X57) 1. BURNER DEVICE according to ed.St. GF 1603139, characterized in that, in order to expand the scope, between the fuel pipe and the housing there is additionally a nozzle for supplying air mixture or air forming ring channels with it. 2. The device pop. 1, characterized in that it further comprises a water collector, an external housing installed and having radial outlet nozzles placed in front of the swirl in the air, and a water nozzle mounted along the axis of the fuel pipe with the possibility of longitudinal movement.