SU104343A1 - Bituminous boiler - Google Patents

Description

Bitumen smelting boilers are known in which a heater, for example, flame tubes, is located in the lower part of the boiler.

In known boilers, various systems of mechanical mixing of bitumen during its heating are used to improve heat transfer. However, such systems cannot provide uniform heating of the whole mass of bitumen, which has low thermal conductivity and high viscosity.

To increase productivity by increasing heat transfer, the proposed boiler is equipped with a circulation system; It consists of a pump, suction pipes, injection pipes and nozzles, which ensure that the molten bitumen is pumped out of the KZ of the upper part of the boiler and is supplied under pressure in the form of a jet to unmelted bitumen pieces.

FIG. 1 shows a schematic longitudinal section of a bitumen boiler; in fig. 2 - its cross-section.

Boiler 1 has a loading hatch 2, a boiler 3 for cleaning the boiler, flue pipes 4, gas ducts 5 in the walls of the cat, a steam pipe, and a chimney 6 for exit

(exhaust gases. The circulating system for variable bitumen consists of a pump 7 with an electric motor 8, a suction pipe 9 sec. a hinge 10, a pressure pipe 11 and a circulation pipe 12 with direct nozzles 13.

During the boiler operation, heated bitumen is sucked through pipe .9, fed through pipes 11 and 12, and through sleep,; Hinge 1Q allows the suction pipe 9 to be installed at different heights, in accordance with the level of the LIQUID bitumen.

PRIORITY

The bitumen boiler is heated by the flame tubes in its part, in order to enhance the heat exchange, the boiler is equipped with a circulating, 1 zioin system consisting of a pump, suction pipes and nozzles, and providing pumping expanded bitumen and feed it under pressure in the form of a jet to unmelted pieces of bitumen.