SU1672122A1 - Burner - Google Patents

Abstract

The invention relates to heat engineering and can be used for burning gaseous fuels in boiler units. The purpose of the invention is to increase the economy and reduce the content of nitrogen oxides in the combustion products. The housing 1 is provided with coaxial shells 2 and 3 forming the central and peripheral air ducts 4, 5 and the annular channel 6 for supplying flue gases. The housing 1 also has a peripheral gas manifold 7, to which the central and peripheral gas exhaust nozzles 8 and 9 are connected. From the manifold 7 in the nozzle 9 enters the natural gas. Flue gases are introduced into channel 6, ejected by venturi tubes 10 and directed to mixing with natural gas. The smoke-air mixture ignites at the outlet of the casing 1. A part of the gas is supplied to the volume of the peripheral air flow and ignites at the outlet of the casing 1, forming a peripheral burning plume. Due to the ejection and afterburning of flue gases, a reduction in the consumption of electricity for own needs and a decrease in the content of nitrogen oxides is ensured, which increases the efficiency of operation of the device. 2 Il.

Description

The invention relates to heat engineering and can be used to burn gaseous fuels in boiler units.

The purpose of the invention is to increase efficiency and reduce the content of nitrogen oxides in the products of combustion.

In FIG. 1 shows a burner device, a longitudinal section; figure 2 is a section aa in figure 1.

The burner device comprises a housing 1 with coaxial shells 2 and 3. forming central 4 and peripheral 5 air channels and an annular channel 6 for supplying flue gases. ' .

The housing 1 is equipped with a peripheral gas manifold 7. to which the central and peripheral gas outlet nozzles 8 and 9 are connected, respectively. The output sections of the central gas exhaust nozzles 8 are located in the flue gas supply channel 6 and are provided with venturi tubes 10. A pipe 11 is located along the axis of the housing 1 to accommodate, if necessary, a fuel oil nozzle.

The burner device operates as follows.

Air is supplied to housing 1 and is divided into two streams - central and peripheral, flowing respectively into the central and peripheral air channels 4 and 5. Natural gas is supplied through the peripheral manifold 7 and introduced through nozzles 9 into the peripheral air channel 5. Flue gases are introduced into annular channel 6, ejected by venturi 10 and are mixed with natural gas. At the exit from the housing 1, the smoke-gas mixture ignites and forms a burning torch.

The rest of the gas is fed into the volume of the peripheral air stream and at the outlet of the housing 1 is ignited, forming a peripheral burning torch.

Thus, in the burner device due to the ejection of flue gases and their afterburning, a decrease in the energy consumption for own needs and a decrease in the content of nitrogen oxides are provided, which increases the efficiency of the device.

Claims (1)

Claim A burner device comprising a housing with coaxial shells forming the central and peripheral air channels and an annular channel for supplying flue gases, as well as gas exhaust central and peripheral nozzles, the latter of which are connected to the peripheral gas manifold, characterized in that, in order to increase efficiency and reducing the content of nitrogen oxides in the combustion products, the central gas outlet nozzles are also connected to the peripheral gas collector, and their outlet sections are located in the channel cottages and flue gas are provided venturi. FIG. 2