SU71594A2 - Cyclone furnace for burning fine fuel on the fly - Google Patents

Description

BASIC Auth. St. N ° 71593 describes a cyclone furnace for burning fine fuel on the fly, made in the form of a circular section with a fuel supply from the top and air from the bottom. Air channels are placed in the hearth of the furnace to create a spiral flow of combustible fuel.

In the middle of the hearth there is a cone of refractory material, which serves to sap out freshly loaded fuel from the middle of the hearth to the mouths of the air tangential channels.

The proposed cyclone furnace for burning fine fuel on the fly is characterized in that dampers, valves, etc., are located to regulate the outflow of air from the channels.

FIG. i schematically shows a horizontal section of the furnace; in fig. 2 shows a section along AB of FIG. one; in fig. 3 - section along / - / fig. 2; in fig. 4 and 5 - sections of lo // - // FIG. 3-device for regulating the air supply in two versions.

Vertical round the curve of 1 of refractory material at the bottom

parts has a cone 2 also of refractory material. The main amount of air is supplied to the shaft by a low pressure fan through two channels 4, the inlets of which between the cone 2 and the shaft / are tangentially directed, which creates two streams in the shaft running in a spiral from bottom to top.

The main gas-air flow is removed from the inlet to the afterburning under-boiler chamber 3 (heat pipe, normal combustion chamber under the water-tube boiler) through expansion channel 7 and S tangentially connected to the mine (diffuser). Part of the flow branches off and creates a backward vortex from top to bottom through the vacuum zone.

The shaft vault is cooled by a small regulated amount of secondary air, directed through outlet 9 to the flare, which starts at the mouth of channel 5 and passes into the afterburner chamber 3. The fuel is fed to the furnace (using an adjustable feeder 10) through the opening 11 in the shaft vault.

To change the angle of exit of the blast air are rotary

nozzles 5 (fig. 4) or dampers 6 (fig. 5), which create the necessary turbulence of the gas flow, which ensures the combustion of fuel particles in the mine. The nozzles or screen kn are located in the channels 4 and are controlled by a handle 12 located outside the furnace, mounted on the axis 13.

Subject invention

The form of the cyclone furnace for burning fine fuel on the fly by author. St. No. 71593, ex;; so that, in order to regulate the air outlet from the channels, in the latter there are dampers, valves, etc.