Device for burning waste gases

 

(57) Abstract:

Usage: the invention relates to a device for burning prefabricated gases and can be used in oil, gas, chemical industry and other sectors of the economy during the combustion of the waste and exhaust gases in flares, and when forced combustion gases in emergency mode when repairing equipment. Device for burning waste gases includes a Venturi pipe installed in her coaxially of the inlet pipe with taper output, hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes, ejection burner installed in the upper part of the hemispherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners, vozduhopodgo pipe installed in the inlet pipe with the annular gap and having the intake tube is made at an angle to its axis and fixed with their ends in the openings of the inlet pipe, procolophonia swirl, placed around vozduhoprovodyaschih pipe on its output side, the shell covering the hemispherical bowl with the formation of the ring to the combustion of waste gases and can be used in oil, gas, chemical industry and other sectors of the economy during the combustion of the waste and exhaust gases in flares, and when forced combustion gases in emergency mode when repairing equipment.

A device for combustion of waste gases containing the Venturi pipe installed in her coaxially of the inlet pipe with conical exit, forming an annular gap in the neck of the Venturi tubes, hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes, the bottom part covering the tapered outlet of the inlet pipe and the upper part of the double cone is divided into a number of sectors through walls, jet burner, installed in the upper part of polyspherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners.

When using the known device for combustion of waste gases in large quantities even when the necessary turbulence does not provide adequate mixing, which leads to incomplete combustion of waste gases. In this case, a significant portion of the volume of the turbulent diffusion flame remains inert the Yu hydrocarbon gases, heterogeneous processes and evolution of a large number of harmful substances.

Due to the transfer of large quantities of waste gas of combustion products and air under the influence of turbulent fluctuations of the combustion front in a turbulent diffusion flame is obtained wavy, blurred, torn into pieces and weakly stable as the ignition occurs at the periphery of the jet and the fiery ring ceases to perform the role of a source of ignition, which reduces the stability of the ignition flame.

The disadvantage of this device is the penetration of a strong wind flow through vozduhoprovodyaschih cracks inside a hemispherical bowl, which can lead to detachment of the flame and its extinction, and this in turn reduces the stability of the combustion flame.

The technical result is to increase the efficiency of combustion of waste gases in an open atmosphere and reducing emissions of harmful substances, improving the sustainability of the ignition flame and devices, an extension of the steady burning torch.

This is achieved by the fact that the known device containing the Venturi pipe installed in her coaxially of the inlet pipe with tapered Wygoda inlet pipe and passing at the base of the double cone, made in the form of boxes, the bottom part covering the tapered outlet of the inlet pipe and the upper part of the double cone, divided into a number of sectors through walls, jet burner, installed in the upper part of the hemispherical bowl, vozduhoprovodyaschih nozzle, made in the form of cracks and symmetrically arranged burners; in the inlet pipe with conical exit set vozduhovyvoda pipe with annular gap, and the input part of which is at an angle to its axis made the intake tube, the ends of which are fixed in the holes of the inlet pipe; procolophonia swirl placed around vozduhoprovodyaschih pipe at its output side; it is provided with a cowling, covering the hemispherical Cup and the formation of the ring confused aperture communicated with the atmosphere.

In contrast to the known device installed in the inlet pipe with conical exit vozduhoprovodyaschih pipe with the annular gap, the entrance of which is at an angle to its axis made the intake tube, the ends of which are fixed in the holes of the inlet pipe; placing procolophonia swirl around vozduhoprovodyaschih pipe on its output side, and the presence of shells, coverage is proven to achieve the goal due to the additional supply of air to the root of the torch and improving the process of mixing air with sbresny gas; create a fiery vortex zone by twisting waste gas; education more than the reduced pressure in the zone between the hemispherical Cup and sides, as well as the elimination of the separation due to the penetration of a strong wind flow through cracks inside a hemispherical bowl.

In Fig. 1 shows a longitudinal section of the device of Fig.2 section a-a in Fig. 1; Fig.3 ejection burner, a longitudinal section; Fig.4 a device for ignition of waste gases, the plan.

Device for burning waste gases contains a tube 1 for supplying a gas inlet pipe 2 with a conical outlet for the supply of waste gases, box 3, forming a double cone, the collector 4 for associated gas, a hemispherical bowl 5 with symmetrically arranged slots 6, the ejection of the burner 7, creating metatrone ring, tube 8 for the supply of associated gas to the burners, vozduhopodgo pipe 9 with the annular gap, the entrance of which is at an angle to its axis made the intake tube 10, the ends of which are fixed in the holes 11 of the inlet pipe, procolophonia the swirler 12 is placed around vozduhoprovodyaschih pipe on its output side, the shell 13, covering polusfericheskaya 2 with cone output together with vozduhoprovodyaschih pipe 9 to form an annular channel 15, at the outlet of which is placed procolophonia swirl 12 flat blades 16 mounted at an angle to the axis. For sealing the bottom end vozduhoprovodyaschih pipe is closed conical bottom 17. In ducts 3 and a hemispherical bowl 5 attached to the shell 13 by means of the rods 18 and 19.

To attach the device to the top of a flare in the bottom base of the inlet pipe is flange 20.

The device operates as follows.

Discharge gas flows through the inlet pipe 2 with a conical outlet in the annular channel 15. Washing the outer surface of the intake tube 10, the gas flow was turbulized, then he gets in procolophonia swirl 12, where due execution of the blades at an angle of inclination to the axis of the gas flow is twisted, and then he fired.

Due to the large temperature difference in the upper and lower parts of the boxes 3 and abrupt changes in air density at the altitude of the air flow ducts rush up and implemented in the base kernel torch. At the same time air is sucked through the suction tube 10 and vozduhopodgo pipe 9 to the root of the torch, creating conditions for the spreading front planeeringuga vortex area by the swirling gas stream, flowing from the annular channel 15, through procolophonia of the swirler 12.

At this time the pipe is served associated gas under pressure to 0.09 MPa in the collector 4, which are connected to all ejection burner 7 tube 8 (Fig.1). Associated gas in the burner 7 is supplied through the pipe 8 (Fig.3), and the combustion air sucked from the outside through the entraining capacity of the gas jet and the discharge gas together with the air outlet of the burner burns in the kinetic mode.

As a result of simultaneous combustion in a series of ejection burners, components metatrone ring, the air density inside the ring is sharply reduced and formed additional air flow through slots 6 in the hemispherical Cup 5, which are directed radially toward its center (Fig.4).

The presence of the shell 13 promotes the formation of more reduced pressure between the hemispherical bowl 5 and the shell 13, and this leads to effective sucking air in this area and through slots 6 in a hemispherical bowl 5, resulting in improved mixing of the air with sbresny gas, and also eliminates the possibility of the separation due to the penetration of a strong wind flow through cracks in NR is nosnam the outlet of the inlet pipe 2, giving sprocname gas swirling movement on the axis of the jet produces a zone of suction that causes the flow of a powerful stream vysokonagornykh products of combustion and air flow to the root of the torch from its inner side. In this case, the torch takes the form of a hollow diverging cone, which is developed on the ignition as on the periphery of the conical outlet of the inlet pipe and the inner surface of the torch, which reduces the length of the torch and further intensifies the process of combustion of waste gas.

Therefore, is directed more supply secondary air to the previously turbosound mixture of waste gases, as well as the creation of the fiery vortex zone by twisting waste gas cone on the exit of the inlet pipe of the device.

1. DEVICE FOR BURNING WASTE GASES containing the Venturi pipe installed in her coaxially of the inner supply pipe with conical exit, forming an annular gap with the neck of the Venturi tubes, and a hemispherical bowl, placed on the conical outlet of the inlet pipe and passing at the base of the double cone, made in the form of boxes in the lower part covering the tapered outlet of the inlet pipe, and verhnestaritskiy bowl, vozduhoprovodyaschih nozzle in the form of cracks, symmetrically arranged burners, characterized in that, with the aim of increasing the efficiency of combustion of waste gases in an open atmosphere and reducing emissions, it has placed the annular gap in the supply pipe vozduhoprovodyaschih pipe in the entrance of which is at an angle to its axis installed the intake tube, the ends of which are fixed in the holes of the inlet pipe.

2. The device under item 1, characterized in that, to improve the sustainability of the ignition flame, it is provided with procolophonid swirler placed around vozduhoprovodyaschih pipe on its output side.

3. The device under item 1, characterized in that, with a view to expanding the limits of sustainable burning torch, it is provided with a cowling covering the hemispherical bowl with the formation of the ring confused aperture communicated with the atmosphere.

 

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