SU752127A2 - Cellular heat-exchanger for rotary furnace - Google Patents

Description

This invention relates to a heat exchange technique in rotating cells and can be used in industrial building materials.

A cell heat exchanger is known that revolves a furnace according to the main ed. St. N ° 635.376, containing parallel axes of curing, formed by internal partitions placed evenly over the cross section of the furnace, in which the discharge end of each cell is curved along the CI.NTOVOY line against the direction of rotation of the furnace.

The disadvantages of the known heat exchanger are increased lyleo.obrazovanie in the discharge part due to the twisting of the gas flow and increased aerodynamic backspotting.

The aim of the invention is to reduce dust generation and aerodynamic resistance.

This goal is achieved by the fact that the rotating heat treatment unit is unloading in the heat exchange cell; the convection of each cell is made in the form of open trays.

FIG. 1 shows a heat exchanger; longitudinal section; on the flg. 2 shows section A-A in FIG. ; in fig. 3 is a section through BB in FIG. one.

Inside the inclined rotary kiln /, a heat exchanger 2 cell type with cells a, b, c, d, e, j, g, h is installed parallel to the axis of the furnace and in section L, where L is determined by heat calculation.

On the unloading side, each a and h cell ends in a Li + Lo section by a v. 3 tray with a screw direction against the direction of rotation of the furnace /. The section LI of the entry of the screw tray 3 inside the cell a – h of the heat exchanger 2 is determined by calculating from the condition that no material was poured into the OSI cure 1 that did not fit into this tray 3 after further rotation.

15

The length of the section L2, on which the tray 3 rotates, is 180 °, and consequently, the twist angle of the screw tray a is determined by calculation / of the condition that the material 3 does not lift by tray 3 (the lifting angle of the screw tray 3 should be greater than the angle of repose of the material) .

Cross Section Sizes of Tray 3

25 are determined by the calculation from the absence of a joint or of material that is pushed into tray 3 in the direction perpendicular to the axis of the cure}.

The exchange device works as follows.

The material 1 of the furnace / enters the cells a- / Z of the heat exchanger 2 in the section L and moves with the floor and rise above the axis of the furnace /.

When the screw tray 3 is reached, the material falls into the last one and during the arastei lechi 1 is poured along it without flowing into the gas flow. The material that has fallen on the LI section ъ tray 3 at this turn is further distant (the rotation moves through the cells a-h moving to the right, BUT can refer to the tray gas and, since the center of the furnace cell a-h is LI longer, therefore considered

Lo.rtsi material Charez Ooorot falls into the lot. K 3 without pouring into the gas flow.

.The use of this heat exchanger will reduce the co-current, appearance, dust formation and increase the efficiency of heat exchange.

Form m U l and invented and

Cell heat: bmennik Rotary. With. Furnaces by author. St. No. 635376, about and with the fact that, in order to reduce dust formation and aerodynamic resistance, the discharge end of each Cell is made in the form of open trays.

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Claims (1)

Form m u la invented and I < Rotary 10-cell heat exchanger. av. No. 635376, due to the fact that, in order to reduce dust formation and aerodynamic drag, the discharge end of each cell is made in the form of open trays. -s Material yield hr rig./ L-a Figure 2