SU792048A1 - Rotary furnace heat exchanger - Google Patents

Description

(54) ROTATING FURNACE HEAT EXCHANGER

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The invention relates to heat exchanging devices rotating for the production of cement clinker and can be used in the cement industry.

Known cell, unit and other types of heat exchangers 1 ..

All these heat exchangers are located in the flow of hot gases, which leads to their intensive wear, moreover, intensive dusting occurs when the material is poured, therefore, to ensure a given furnace performance, more feed mixture is required, so that heat exchangers become irrational.

The closest in technical essence and the achieved result to the invention is the heat exchanger of the wrenching furnace, which contains radial blades placed evenly over the furnace section and located in the gap between the radial blades and the furnace casing of additional loops-25 and 21.

A disadvantage of the known heat exchanger is intensive dusting due to the air flow being poured in through the gap.

the blades and the furnace body of the material, which leads to a decrease in the efficiency of heat exchange.

The aim of the invention is to reduce the formation of heat and increase the efficiency of heat transfer.

This goal is achieved by the fact that in a rotary kiln heat exchanger containing radiators blades placed evenly across the kiln and additional blades located in the gap between the radial blades and the furnace body, the latter are hinged on the furnace body against the radial blades on their first in the course of the oven side.

FIG. 1 shows a furnace, a longitudinal section; in fig. 2 - oven with heat exchanger, cross section.

Inside the furnace 1, on the brackets 2 and 3, the radial blades of the heat exchanger 4 are fixed, on the first side of which the stops 5 are mounted on the side of rotation.

Against each radial blade 4, the blade 6 is hinged; it completely fixes the gap between the blade 4 and the furnace body 1.

All dimensions of the heat exchanger are determined by calculation depending on the required heat exchange, and the gap between the blades 4 and the furnace 1 is from. condition partial immersion of the blade 4 into the material.

The heat exchanger works as follows.

When the blade is bent in the lower position, it lies on the furnace body 1 and does not prevent the passage of part of the material under the blade 4. With a lower rotation after the upper position has passed, the blade b contacts the stop 5.

During further rotation, the material collected by the blade 4 is poured to the furnace body 1g but the blade b closes, the gap between the blade 4 and the furnace 1, preventing material from falling into the gas stream.

The use of the proposed heat exchanger reduces dust generation and, as a result, increases the efficiency of heat exchange.

Claims (2)

1. Koderov, EI. Cement Industry Furnaces, L., Stroyizdat 1968, p. 59-95. 2. USSR author's certificate for application number 2594433 / 29-33, cl. F 27 V 7/16, OOOZ.78.