The flare for combustion of waste gases

 

The invention relates to the oil industry and can be used for burning waste gas in the oil fields and refineries. The objective of the invention is to reduce emissions of pollutants into the atmosphere. The flare for combustion of waste gases includes a separator, the gas waste gas flare pipe. It is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through a duct with an adjustable valve. The adsorption unit cleaning gas is connected by a pipeline with an adjustable gas valve and pressure sensor output separator for the separation of gas and gas pipeline and riser flare with its nozzle. The pressure sensor is electrically connected to the input of the comparison element, a second input connected to the reference pressure, and the output - variable valve duct. Block adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit. 2 C.p. f-crystals, 1 Il.

The invention relates to oil Promyshlennaya.

The combustion of waste gases in flares can prevent the pollution of toxic and flammable substances, to reduce the number of accidents and to create security, because through the open end of the flare can get into the air, which will lead to the formation of an explosive mixture in the flare system.

The well-known scheme flare system for burning waste gases, including flare tube burners and nozzles for the steam silly, K. Environmentally friendly flare tip// Oil, gas and petrochemicals. - 1990, No. 1 - C. 112-114/.

The drawback of the scheme is that in terms of the oilfields there are difficulties with obtaining a pair, because there is no source of clean fresh water. This significantly limits the scope of such flare systems.

The closest you install the same destination to the claimed invention on the totality of symptoms is the technological scheme flares for gases with a selection of flare gases for recycling or for combustion in boilers, comprising a separator in which the gas is released from the condensate, the condensate discharge gas flare pipe, the supply line to the consumer, a control valve for the machine is 9, - S. 24-25/.

Disadvantages installation are low completeness of combustion gas and a large amount of harmful emissions into the atmosphere.

The present invention is the reduction of emissions polluting the atmosphere.

This object is achieved in that known to the flare for combustion of waste gases, comprising a separator, gas waste gas flare pipe is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through the air duct with adjustable latch, block adsorption of gas purification, United gas pipeline with adjustable gas valve and pressure sensor output separator for the separation of gas and gas pipeline and riser flare with its nozzle, the pressure sensor is electrically connected to the input of the comparison element, a second input connected to the reference pressure, and the output - variable valve duct and block the adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit.

Cholesteremia pipes made of polyethylene or fiberglass. Selected materials hardbottle to use with a large paraffin content in oil this reduces the deposition of wax on the inner surface cholesterolic pipes.

The adsorption unit is preferably mounted at an angle of 45-60. The nozzle is made of heat-resistant steel. Installation of the ejector and providing a regulated supply of air at the exit of the nozzle, and push the mixture (mixing) of waste gas which has passed the adsorptive purification, with air in the ratio of 1:10 provides complete smokeless combustion of gas and significantly reduces emissions of soot and oxides in the atmosphere.

The drawing shows a diagram of flares for the combustion of waste gases.

The apparatus comprises a riser with 1 nozzle 2 and the ejector 3, mounted coaxially relative to the nozzle 2. The ejector 3 is connected to the fan 4 through the duct 5 and the adjustable valve 6. The installation also includes a separator 7 for the evolution of a gas, the output of which through the pipeline 8, block adsorption purification of gas 9 and the pipeline 10 is connected to the riser 1. At the output of the separator 7 has a pressure sensor 11, which is electrically connected to the input of the comparison element 12, the second input of the comparison element 12 is connected with the reference pressure 13, and the output of the comparison element 12 is controlled by valve 6. The adsorption unit cleaning ha the CSOs inclined, and is connected with a storage capacity of 15. The block 9 is also equipped with a by-pass line 16 with valve 17 and valve 18.

The device operates as follows. Discharge gas from the separator 7 is fed through the pipeline 8 through the valve 18 in the block adsorption purification 9, through the pipeline 10, the riser 1 in the nozzle 2. At the same time in the ejector 3 fan 4 through the duct 5 and the adjustable valve 6 pump the air. Gas-air mixture remotely lit /not shown/. Air supply depends on the amount of supplied gas or gas pressure at the outlet of the separator 7. To ensure complete combustion of waste gas, you need to meet the conditions of the ratio of gas:air as 1:10. To do this, change the position of the valve 6 and to control the completeness of the combustion gas /for example, visually - no soot indicates the completeness of combustion/. The final gas to air ratio depends on the content of residual oil in the gas and determine empirically. With increasing gas pressure, the gas flow also increases and the signal from the pressure sensor 11 is fed to comparing element 12, which issues a control signal to the controllable valve 6 to increase the air supply to the ejector 3. As a result, the ratio popasnoy mixture, as the ratio of gas:air >3/2.

With the passage of gas through the adsorption unit cleaning 9 drops of oil in the gas coalescers on the inner surface of the pipe 14, and then they drain the holding tank 15.

During the repair unit 9 discharge gas to the riser 1 is supplied through the bypass line 16.

Thus, the advantage of the inventive installation is that the forced mixing of gas with air at a ratio of 1:10, and its combustion in the presence of the ejector duct, an adjustable valve, and remove from the gas drip oil using adsorption treatment unit leads to the reduction of emissions of harmful substances into the environment.

Claims

1. The flare for combustion of waste gases, comprising a separator, gas waste gas flare pipe, characterized in that it is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through the air duct with adjustable latch, block adsorption of gas purification, United gas pipeline with adjustable gas valve and pressure sensor output separator for the separation of gas and the enta comparison, a second input connected to the reference pressure, and the output - variable valve duct and block the adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit.

2. The flare for combustion of waste gases under item 1, characterized in that the heat of adsorption purification is installed obliquely.

3. The flare for combustion of waste gases under item 1, characterized in that cholesteremia pipes made of polyethylene or fiberglass.

 

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