SU77079A1 - Charcoal cyclone firebox - Google Patents

Description

The invention relates to a pulverized cyclone furnace and aims to increase its separating effect.

The proposed pulverized cyclone furnace is shown in FIG. 1-4.

The furnace consists of two cyclone chambers 1 and 2, which are interconnected by means of a tangential channel 3. Both chambers are placed vertically and parallel to one another. In the hearth of the main cyclone chamber /, a circular (for example, turbulent) burner 4 is installed, through which the gas flows into the chamber / dust and air.

In chamber 1, at a certain height from the burner 4, sectioned secondary air flows tangentially along the periphery of the cylinder along channels 5. The discharge of hot gases from chamber 1 is carried out tangentially through channel 5 into an additional cyclone chamber 2 above the common bottom at the bottom of these chambers.

Chamber 2 does not have a burner or air ducts. Chamber 1 is a vertically mounted cylinder formed from vertical screen tubes. In the lower part of this cylinder there is a hot underneath with a central round burner, and at the top, at a certain height, a hot arch is installed with a central opening or with an air nozzle (for tertiary air).

Channel 3 is formed by appropriate pipe routing. Chamber 2 is also a vertical cylinder, but of smaller diameter, formed from vertical pipes. At a certain height, chamber 2 with its vertical pipes passes into a multi-tube beam 6 of intensive cooling, which receives the required number of additional pipes from screen and boiler collectors.

Screen tubes of chambers 1 to 2 are coated with metal spikes welded to the tubes.

Slag removal is carried out at the bottom of the chambers through the slab receiving slab inlet Liquid slag removal continuous.

A two-stage cyclone furnace with liquid slag removal can be structurally designed for newly designed boilers, as well as attached to reconstructed boilers with furnaces for dry granulation of ash.

365

FIG. Figure 2 shows a group consisting of two pairs of chambers 1 and 2 having a common dividing wall 7 of two-sided illumination tubes, with the tubes being coated on both sides with metal coating. Both chambers have a common under and one gullet slag receiving shaft, which is common to the entire group of cyclone chambers.

The firebox can be made: from half of the group, i.e. from two cyclone chambers (Fig. 3); from several pairs of cyclone chambers set separately; with the peripheral placement of several small cyclone combustion chambers around one central large chamber (Fig. 4).

With reference to existing two-stage boiler units, a liquid slag cyclone furnace is added as follows:

Claims (3)

1) chamber 2 is installed under a cold funnel instead of a slag bunker; 2) the chamber 2 is connected to the firebox on the section of the front slope of the cold funnel with the help of the embrasure; 3) the chamber 2 is connected to the front or side walls of the furnace also by means of an embrasure. (In this case, the furnace of an existing boiler is converted into a cooling chamber). In addition to the design of chambers of vertical pipes shown in the drawings, the design of horizontal coil pipes is not excluded. The screens of chambers 1 and 2 can be included in the boiler circulation system, as well as in the form of upstream surfaces of a water economizer (or steam superheater), or elements of boilers with forced circulation. It is also possible that the system of chambers made of smeared pipes with refractory coating as the elements of the air heater is used. Subject invention . A pulverized cyclone firebox, with a torch rotating in a spiral, and supplying secondary air to the combustion chamber through tangentially separated channels in the walls, characterized in that, in order to increase the separating effect of this firebox, it is attached to a sequentially installed additional cyclone chamber burnout and additional trapping of liquid slag, communicated with the main combustion chamber through a tangentially located channel. 2. The form of execution of the furnace p. I, characterized in that it is made dual in both part of the main combustion chambers and in the part of additional chambers of burning and additional trapping of liquid scrap metal with output of combustion products from the main chambers to additional chambers at common dividing wall between the chambers. 3. Form of execution of the firebox pop. 1 and 2, characterized in that a burner installed in the hearth of the main combustion chamber is used to supply the airspray and air, and a hole is provided in the chamber arch for the tertiary air oppositely directed relative to the torch.