SU1673785A1 - Furnace - Google Patents

Abstract

The invention relates to energy and can be used in the development of advanced equipment. The purpose of the invention is to improve the quality of combustion. Part of the air from the air jacket 4 enters the combustion chamber 1 through the tangential nozzles 2 of the primary blow. The fuel nozzle 3 is also fed through the fuel injector 3, resulting in a stable flame stabilization and burnout of a part of the fuel. The products of combustion from chamber 1 enter the afterburning chamber 6, the remaining part of the air from the jacket 4 enters through the perforation in the wall 5, made in the form of a conical funnel. The fuel from the fuel manifold 8 is supplied to the fuel distributors 7 and then through the nozzles 9 of additional fuel supply to the chamber 6, where it ignites and burns out along the length. The axis of the nozzles 9 are directed tangentially to the corresponding conventional circle and are the same or multidirectional for adjacent fuel distributors. 2 Il.

Description

$ ig. /

The invention relates to energy and can be used in fuel-burning devices to obtain stable process characteristics in variable conditions.

The aim of the invention is to improve the quality of combustion

FIG. 1 schematically shows the proposed device; Fig 2 - a fragment of the surface of the conical funnel.

The firebox contains a combustion chamber 1 with tangential nozzles 2 primary blowing, the axes of which are directed tangentially to the corresponding conventional circle, as well as the fuel injector 3. In addition, the device contains an air head 4 located around the combustion chamber 1 and having a perforated wall 5 in the form a conical funnel, as well as an afterburning chamber 6 installed coaxially with the combustion chamber 1, the perforation of the wall 5 is made in several rows, and on the inner surface of the wall 5 between the rows of perforations there are reinforced ring rings fuel distributors 7, connected to the fuel manifold 8, placed in the cavity of the air jacket 4. On the annular fuel distributors 7, nozzles 9 of additional fuel supply are strengthened, while the axes of the nozzles 3 of all fuel distributors 7 lie in a conical surface with a generator parallel to the generator surface a conical funnel and fuel distributors passing through the centers of sections 7. The length of each to cage 9 is at least 1.5 times its diameter, and the diameters of conditional circles tangential to which In addition to the axis of the nozzles 9, add a different toppive feed, for each fuel distributor 7, the following ratio is calculated: d - cK d, n g (0 4 0.45) dxi - drpi) - - (o t dip)

where dx is the diameter of the circle passing through the centers of the cross sections of the fuel distributor

dip is the diameter of the cross section of the fuel distributor;

 and d p | - respectively, the re diameters for the fuel distributor, which follows from the center to the periphery behind the fuel distributor, for which the diameter of the conventional circle is calculated.

The furnace works as follows. Part of the air from the air jacket 4 enters the combustion chamber 1 through the tangential nozzles 2 of the primary blow. Through the fuel injector 3 into the combustion chamber 1

fuel is also supplied, resulting in reliable flame stabilization and burnout of a portion of the fuel. Combustion products from chamber 1 enter chamber 6

afterburning, the remaining part of the air comes from the air jacket 4 through the perforation in the wall 5, made in the form of a conical funnel. Fuel from fuel manifold 8 is supplied

The distributors 7 and further through the nozzles 9 of the additional fuel supply comes to the afterburner, where it ignites and burns in length. The axis of the nozzles 3 additional fuel supply is directed to

5 tangent to the corresponding conditional circle and equally or in different directions for the adjacent fuel distributors 7. The provided characteristic features of the device make it possible to intensify

Claims (1)

0 processes of mixing fuel with an oxidizing agent, which makes it possible to improve the quality of combustion. Formula of the invention. A furnace containing a combustion chamber with a fuel injector and tangential 5 nozzles of primary blowing, an air jacket placed around the combustion chamber and having a perforated wall in the form of a conical funnel, as well as a chamber installed coaxially with the combustion chamber 0 afterburners with additional fuel supply accidents, with the axes of the primary blowing nozzles and the additional fuel supply nozzles being tangential to the corresponding conventional circumferences, 5 characterized in that, in order to improve the quality of combustion, the perforation of the conical funnel is made in several rows, and the nozzles for additional fuel supply are located on annular heavy distributors, additionally fixed on the inner surface of the conical funnel between the perforation rows and connected to the fuel manifold located in the cavity of the air handle of the head, while the axes of the nozzles of all the distributors are located in the conical surface with a generator parallel to the generator surface of the conical funnel passing through the centers of the cross-section of the heating distributors, the length of each nozzle is at least 1.5 times its diameter, and the diameters of conventional circles along the tangent axes to which the axes of the additional fuel supply nozzles are directed, 5 for each fuel distributor is calculated using the following relationship: d dK + dTp + (0.4 ... 0.45) - dTpi) - - (o + dip), where dk is the diameter of the circle passing through the centers of the cross sections of the fuel distributor. dtp is the diameter of the fuel distributor cross section, diq and dTpi are respectively the same diameters for the fuel distributor, next to the center of the periphery, after the fuel distributor for the nozzles of which the diameter of the conventional circle is calculated. tifff eight FIG. g