High efficiency cyclone gasifying combustion burner and method
First Claim
1. A cyclone gasifying combustion burner comprising a combustion housing defined by an inner cylindrical wall surrounded by a manifold chamber configured with an combustion air inlet, said inner cylindrical wall having air jet holes therein of substantially predetermined diameter and disposed at a substantially predetermined angle to create an air cyclone flow in a reaction zone in said inner cylindrical wall spaced above a lower air starved flaming pyrolysis gasifying fuel bed thereof whereby to increase at least one of the residency time, turbulence, mixing of oxygen, and volatile gases for substantially complete combustion of gases within said reaction zone.
0 Assignments
0 Petitions
Accused Products
Abstract
A cyclone gasifying combustion burner and its operation is described. An exemplary burner has an inner cylindrical wall with a contour chamber feeding combustion air into the inner cylindrical wall, with an open end and a solid fuel support end where a combustible material forms a fuel bed. The inner cylindrical wall has a series of inclined air jet holes of substantially predetermined diameter and disposed at substantially predetermined locations therein to create a unidirectional cyclone within a combustion zone defined within the inner cylindrical wall. The air jet holes are disposed at a tangential and vertical angle whereby the combustion air is drawn into the inner cylindrical wall and creates a cyclone flow to mix with the combustion gases released from the flaming pyrolysis fuel bed and causes the combustion gases to flow in a cyclone path within a reaction zone to increase the residency, mixing and turbulence time of the combustion gases and simultaneously precipitate suspended particles against an inner surface of the inner cylindrical wall whereby the particles are caused to gravitate to the fuel bed where they are removed in a controlled manner during the operation of the burner.
66 Citations
63 Claims
- 1. A cyclone gasifying combustion burner comprising a combustion housing defined by an inner cylindrical wall surrounded by a manifold chamber configured with an combustion air inlet, said inner cylindrical wall having air jet holes therein of substantially predetermined diameter and disposed at a substantially predetermined angle to create an air cyclone flow in a reaction zone in said inner cylindrical wall spaced above a lower air starved flaming pyrolysis gasifying fuel bed thereof whereby to increase at least one of the residency time, turbulence, mixing of oxygen, and volatile gases for substantially complete combustion of gases within said reaction zone.
-
48. A method of substantially reducing at least one of the emission levels of volatile organic compounds (VOC), particulate and entrained fly ash, and the level of nitrogen oxides (NOx) during combustion of a solid or gas fuel within a heating device, said method comprising the steps of:
-
i) feeding said solid fuel in an open end of a cyclone gasifying combustion burner and onto a flaming pyrolysis fuel bed thereof, disposed below a reaction zone of said burner, said burner having a burner chamber defined by an inner cylindrical wall having a predetermined number of inclined air jet holes of predetermined diameter and height disposed at substantially predetermined locations to create a cyclone air flow within said reaction zone; and
ii) providing air into said burner chamber through said inclined air jet holes whereby to direct combustion gases from said fuel bed into said reaction zone to mix with said cyclone air flow thereby increasing at least one of the residency time of said combustion gases, turbulence, and mixing of oxygen and volatile gases for substantially complete combustion of gases in said reaction zone. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
-
- 59. A gasifying combustion burner having a housing defined by an inner cylindrical wall surrounded by a manifold chamber configured with an combustion air inlet, said inner cylindrical wall having air jet holes therein disposed at predetermined angles to create an air cyclone flow in a reaction zone in said inner cylindrical wall spaced above a lower combustion gas supply, said cyclone flow in said reaction zone configured for increasing at least one of residency time, turbulence, and mixing of oxygen with volatile gases for substantially complete combustion of gases within said reaction zone thereby substantially reducing the emission of pollutants into the atmosphere.
-
62. A method of substantially reducing the emission levels of any one of volatile organic compounds (VOC), particulate, entrained fly ash and the level of nitrogen oxides (NOx) during combustion of a gas, said method comprising the steps of:
-
i) supplying a combustion gas below a reaction zone of a cyclone gasifying combustion burner, said burner having a burner chamber defined by an inner cylindrical wall having a substantially predetermined number of inclined air jet holes disposed to create a cyclone air flow within said reaction zone when combustion air is drawn therethrough, ii) drawing air into said burner chamber through said inclined air jet holes whereby to draw said combustion gases into said reaction zone to mix with said cyclone air flow thereby increasing at least one of the residency time of said combustion gases, turbulence, and mixing of oxygen with volatile gases for substantially complete combustion of gases in said reaction zone to substantially reduce the emission of pollutants into the atmosphere. - View Dependent Claims (63)
-
Specification