Combustion – Process of combustion or burner operation – Burning waste gas – e.g. – furnace gas – etc.
Patent
1995-11-07
1998-10-20
Price, Carl D.
Combustion
Process of combustion or burner operation
Burning waste gas, e.g., furnace gas, etc.
431 8, 431202, 431115, 431353, F23D 1320
Patent
active
058237593
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an apparatus for burning combustible gas and a method for using the apparatus.
BACKGROUND
Gases containing common air pollutants, such as hydrocarbons, alcohols, ethers, soot and other combustibles, are frequently encountered in industries wherein combustion furnaces are utilized. In order to reduce the emission of pollutants and waste smoke into the atmosphere, a variety of devices have been proposed for burning the combustible gases.
A commonly utilized device is referred to as a flare stack wherein combustible gas is burned and discharged into the open air. Several exemplary prior art techniques are disclosed in the following patents.
U.S. Pat. No. 3,828,700 to Ragot discloses an apparatus and process for the smokeless burning of residues. The apparatus consists of a chimney designed for the introduction of air into the burning zone, and a mechanism for introducing the residue into the chimney in the form of a spray. Thus the disclosed apparatus and process require that the residues to be burned off be pulverized or otherwise converted to a spray before introduction into the chimney.
U.S. Pat. No. 3,852,023 to Itoh et al. discloses an apparatus for disposing of gas by burning. The apparatus consists of a plurality of branch pipes connected to a main pipe carrying combustible gas. The gas is channeled into one or more of the branch pipes according to the flow rate in the main pipe. The branch pipes are connected to a combustion furnace having a plurality of stages arranged in vertical order. gas introduced into the combustion furnace through the branch pipes is ignited and burned by ignition means located in the lowermost stage of the furnace.
U.S. Pat. No. 3,898,317 to Hemsath et al. discloses an incineration system for incinerating flue gases which contain a combustible component. The system uses two chambers that are added to a stack emitting industrial gases. The first chamber terminates at the exit end of the stack in an annular passage so that high velocity air, which acts as an air pump, is directed longitudinally relative to the stack. The second chamber is disposed downstream of the first chamber and includes a plurality of burners and a thermocouple that senses the temperature of the gases. A preset temperature is achieved in the chambers by varying the quantities of air emitted from the first chamber as well as the amount of fuel and air supplied to the burners in the second chamber.
U.S. Pat. No. 3,954,386 discloses a flare burner for burning combustible gases. The flare burner consists of a venturi burner tube having specified dimensions, a gas supply pipe having a gas outlet opening at the throat of the venturi burner tube and pilot burner jets for burning combustion gases.
U.S. Pat. No. 4,003,693 discloses a flare stack gas burner consisting of a stack with a centrally disposed combustible gas delivery pipe having a divider with arms for upward delivery of the combustible gas through a plurality of slots to a mixing space. The flare stack also includes a rotary diffuser for mixing the combustible gas with air which is introduced under pressure into the stack.
It is an object of the present invention to provide a method and apparatus for burning the combustible components of gases with the advantages which will become apparent from the following discussion.
SUMMARY OF THE INVENTION
The present invention relates to a method and apparatus for burning the combustible components of gases produced in industrial processes. The method and apparatus are particularly well suited for use in burning the combustible components of the gas stream exiting from a carbon black furnace during the production of carbon blacks.
The apparatus of the present invention comprises: receiving a gas stream; mixture; the exiting gaseous products resulting from combustion of the gas and air mixture.
The method of the present invention comprises: a stack pipe; mixture to exit the stack pipe and apparatus of the present invention.
The gas supply pipe refers to
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Cabot Corporation
Cairns James A.
Price Carl D.
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