SU103406A1 - A device for heating gases solid granular coolant - Google Patents

Description

Various designs of air heaters are known that are designed to use heat from the exhaust flue gases. However, most of these designs do not provide sufficiently deep use of Ten: ia, while others are cumbersome. Designs of air heaters of heat exchangers using a moving coolant layer are also known, however, due to structural disadvantages, they have not been commercialized.

The present device for heating gases is free from these disadvantages.

FIG. 1 shows a longitudinal section of the device; in fig. 2 - its side view.

The device is a metal shaft / square section, which has four rows of grooves 2 and 3. The top two rows of grooves are separated from the bottom two rows by a horizontal partition 4 in which the flow pipes 5 are located. The ends of the legs on one side are combined with collectors 6 and 7, located on the outside of the Schachta, and on the opposite side freely lie inside the mine.

All free space of the mine is filled with a granular inert material-coolant.

Any granular material with a grain size of 8–10 mm that has sufficient mechanical strength and thermal stability, such as stone casting balls (cast contact), can be taken as the heat transfer agent.

With the help of a bucket e.tvator 8, the granulated materal-tenl carrier is taken from the chute 9 and mixed into the upper part of the shaft than a, o, the constant circulation of the shaft. In order to ensure an even split: a granular material across the shaft section, a device of 10 d of flow leveling is provided in its lower part.

This device is a group of funnels, arranged in such a way that the upper row, consisting of the main non-diverging funnels, spits the coolant into the additional funnels of the lower row, which are poured it further into one lower funnel.

The hot waste gases after the furnace or boiler enter the collector 6, from where they are evenly distributed along the channels 2 to the coolant layer r. Pass the coolant.

the gases give up their heat to it, after which they enter the upper row of gutters 3 and the collector 7, from where they are removed outside using a fan //.

The cold air enters the lower row of grooves 2, passes through a layer of coolant where it is heated, and then enters the grooves 3 and the collector 7, from where it is blown into the firebox by means of a fan 12.

The circulation of the coolant is established on the basis of ensuring the creation in the device of the heat exchange surface necessary to achieve a given degree of heat utilization of the exhaust gases.

Prev Invention

1. A device for heating gases by a solid free-flowing coolant, made in the form of a square shaft, inside which flow pipes are located, characterized in that, in order to improve heat exchange between the gas and solid coolant, four rows of troughs are located inside the shaft, Yes, which are separated from the two lower rows by a horizontal partition (which is a grate for overflow pipes), with the ends of the grooves on one side being joined by manifolds located outside the shaft, and on the other, opposite side Our gutters lie loosely inside the mine. 2. The device according to claim 1, characterized in that, in order to equalize the flow of solid coolant, for receiving and directing the latter in the lower part of the shaft under the main inflowing funnels are placed additional grinders that guide the coolant to the underlying funnel, from which it flows There is a grain elevator for return to the cycle.