SU41501A1 - Furnace for low-temperature distillation of combustible - Google Patents

Description

Nowadays, for the low-temperature distillation of shale, the design of tunnel kilns is recognized as the most technically perfect, both in terms of high productivity and quality of the resin produced, but tunnel kilns are intended exclusively for lumpy shale, while shale fines coming from RUDNIKI in large quantities (up to) cannot be serviced by them.

The proposed kiln is intended for low-temperature distillation of shale fines, milled peat and sanpoptv ey, respectively, processed bulk fuel; at; its distillation chamber is located one below the other trays, along which scraper conveyors for moving fuel are located, surrounded by zigzag-like flue tubes. The latter are connected to the furnace, into which the semi-coke enters from the distillation chamber.

In FIG. 1 shows a vertical longitudinal section of the furnace; FIG. 2 - vertical cross-section of the furnace; FIG. 3 is a side view of the furnace; FIG. 4 - horizontal section of the furnace.

The furnace is composed of the following elements; 1) the hopper 1, located PA top of the furnace; 2) feeder 2,

{20)

creating tightness between the distillation chamber and the outside air; 3) a distillation chamber 3, in which trays are located one above the other in height of the chamber, which are guide planes of carbon steel with sides 0.3 m high.

Scraper conveyors 6 are located along the trays for moving shale fines, each serving two trays and moving along the rail beams. Conveyors are surrounded by flame tubes 7 of corrugated carbon steel with a diameter of 0.5 N located in 22 rows along the length of the chamber and zigzag in the height of the chamber. To avoid overheating, there is a distance of 50 mm between the chutes and the flue tubes.

For exhaust flue gases, there is a collecting duct 4, which guides them into the chimney, and 1 to supply superheated steam to the pipe 5. To dispense semi-coke into the furnace 11, there is a feeder 13, which creates an airtight chamber from the outside air.

When the furnace is, chambers for cooling the flue gases to the desired temperature are then supplied to the collector 12 for distribution through the flue pipes 7. h. The discharge from the chamber of shale decomposition products is carried out through the pipe 10. The shale fines are fed to the bunker 1 from where the shale enters the feeder 2 and in certain portions is discharged into the distillation chamber on the upper tray 8, which is moved by means of the scraper conveyor 6. At the end of the tray, the slate is poured and dropped onto the underlying tray, where also with the help of scrapers ansportera moves in the other direction and so on. d. oversleeping shale fines from one tray to another, as well as shale fines spilling during moving the scraper conveyor of the tray must create good conditions for uniform heating throughout the thickness of the mass of oil shale. Thus, the shale fines, subjected to heat treatment, reaches the lower chute of the chamber already in the form of semi-coke and is poured into the hopper of the feeder 13, from which it enters the lower-lying slurry, resulting in heat treatment of the slate fines to ash for making living materials. In this case, the physical heat of the semi-coke is used to decompose oxa, and the use of absolutely dry semi-coke with a temperature of 450 as fuel (self-igniting in air) considerably simplifies the task of creating the design of the furnace and provides a greater effect of burning semi-coke both in terms of heat and perfection. burning the char to ash, which is very important, since the content of even a small amount of carbon in shale ash significantly worsens the properties of the ash. I From the firebox, the flue gases enter I into the cooling chambers and from there into the collector 12, evenly distributing j the flue gases through the flame tubes 7, through which the flue gases are sent; upward to meet the movement of the shale, I fall into the collection channel 4 worked; gases and go to the chimney. The movement of the conveyors is carried out by means of an electric motor 9. j To reduce the number of revolutions j, a gearbox is installed. The subject matter of the invention. I Furnace, for low-temperature re-burning of combustible, characterized in that I distillation chamber 3 is equipped with a zigzag figuratively surrounding conveyors 6 I with fire tubes 7 directly connected with furnace P.

// I / 1

ate g / a ,, v-a

. // v

FIG. 2

- /

 O-SrS and V j

i

Tr-ff4f-Tf- - .V-, r -; - f,

one;,.,..,

 .

jC & DGCCiC

4n

 Mwif

SchAl1

.PpiipQPl