SU894308A1

SU894308A1 - Rotary furnace spill-over heat exchanger

Info

Publication number: SU894308A1
Application number: SU802869288A
Authority: SU
Inventors: Владимир Иванович Махряев
Original assignee: за витель НСЩН Зрг.Л); аАГЕНТНО13 fEXWWBt ;Afe В. И. Махр ев
Priority date: 1980-01-08
Filing date: 1980-01-08
Publication date: 1981-12-30

Description

(54) ПЕРЕСЫПНОЙ ТЕПЛООБМЕННИК ВРАЩАЮЩЕЙСЯ ПЕЧИ(54) EXHAUST EXCHANGER OF ROTATING FURNACE

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Изобретение относитс к технике обжига цементного клинкера во вращающихс печах и может найти применение в цементной, металлургической, химической и других отрасл х промышленности.This invention relates to a technique for firing cement clinker in rotary kilns and can be used in the cement, metallurgical, chemical and other industries.

Известен пересыпной теплообменник вращающейс печи, содержащий прикрепленные к внутренней поверхности корпуса печи теплообменные элементы, выполненные в виде труб с вырезами дл входа и выхода материала с отверсти ми дл прохода газов 1 .A rotary kiln pouring heat exchanger is known, containing heat exchange elements attached to the inner surface of the furnace body, made in the form of tubes with cutouts for the material inlet and outlet with openings for the passage of gases 1.

Недостатком известного теплообменника вл етс то, что за половину оборота он перемещает и пересыпает материал соответственно на длину одного диаметра печи и на диаметр теплообменных труб, а в течение другой половины оборота труба находитс без материала, что сокращает срок службы теплообменника, а также снижает эффективность теплообменника.A disadvantage of the known heat exchanger is that in half a turn it moves and pours material, respectively, the length of one furnace diameter and the diameter of the heat exchange tubes, and during the other half turn the pipe is without material, which reduces the life of the heat exchanger and also reduces the efficiency of the heat exchanger .

Цель изобретени - интенсификаци теплообмена и увеличение срока службы теплообменных элементов.The purpose of the invention is to intensify heat exchange and increase the service life of heat exchange elements.

Указанна цель достигаетс тем, что в пересыпном теплообменнике вращающейс This goal is achieved by the fact that in the pouring heat exchanger

печи, содержащем прикрепленные к внутренней поверхности корпуса печи теплообменные элементы, выполненные в виде труб с вырезами дл входа и выхода материала и отверсти ми дл прохода газов, J теплообменные элементы снабжены размещенными по центру труб перегородками, прикрепленными к внутренней поверхности корпуса печи посредством крепежных устройств, на которых свободно установлены трубы , при этом вырезы дл вхо.аа и выходаfurnaces containing heat exchange elements attached to the inner surface of the furnace body, made in the form of pipes with cutouts for the material inlet and outlet and gas passage openings; J heat exchange elements are provided with partitions located in the center of the pipes attached to the internal surface of the furnace body by means of fixing devices, on which the pipes are freely installed, with cutouts for the inlet and outlet

10 материала выполнены на каждом конце трубы с противолежащих перегородке сторон, а отверсти дл прохода газов размещены равномерно по длине трубы со смещением противолежащих отверстий относительно друг друга.10 of the material is made at each end of the pipe with the sides opposite to the partition, and the holes for the passage of gases are placed evenly along the length of the pipe with the opposite holes being displaced relative to each other.

Claims

5 In addition, the fastening devices are made in the form of nests rigidly attached to the furnace body, in which the pipe partitions are freely installed, and the partitions are provided with limiters, some of which are rigidly attached to the partitions, and others by means of a detachable connection. FIG. I shows the installation of a single heat exchanger pipe, general view; in fig. 2 — node I in FIG. one; in fig. 3 shows section A-A in FIG. one; in fig. 4 is a view along arrow B in FIG. 2. The rotary kiln pouring heat exchanger contains a pipe 1 with a partition 2 placed in the center, cutouts 3 to grip the material, cutouts 4 to unload the material, openings 5 for the entrance of gases, openings 6 to exit the gases; the pipe 1 with the ends of the partition 2 is installed in the sockets 7, which are welded to the furnace body 8, mine lining 9. On the partition 2, eight limiters 10 and 11 are attached, of which four limiters 10 - by means of a detachable connection 12, and four limiters 11 - by welding. The pouring heat exchanger works as follows. When the furnace rotates, the material enters the pipe I through the notch 3, and through the notch 4 of the same end of the pipe 1 at the same time unloading occurs. When the furnace is rotated 180 °, the material that entered the cut-out 3 falls down and leaves the pipe 1 through step 4, blown with hot gases through the holes 5 and 6. At the same time, through the cut-out 3 of the same end of the pipe 1, loading takes place, etc. Since the pipes 1 are installed freely, they are shaken in the direction of the pipe 1 at each 180 ° rotation, and during horizontal positioning, the valve-1c is shaken in the direction perpendicular to the axis of the pipe 1. The proposed device significantly increases the circulation of the material and heat exchange between gas and ma erialom compared with the known heat exchanger since. in one turn he throws twice as much material through the gas and is thereby twice as safe from thermal wear. By increasing heat transfer, the proposed device significantly increases the productivity of the furnace. Claim 1. Rotary kiln heat exchanger containing heat exchanger elements attached to the inner surface of the furnace body, made in the form of tubes with cutouts for material inlet and outlet and gas passage openings, characterized in that in order to intensify heat exchange and increase service life heat exchange elements, the latter are provided with partitions placed in the center of the pipes attached to the inner surface of the furnace body by means of fixing devices on which pipes, with cutouts for the material inlet and outlet at each end of the pipe with opposite sides of the partition, and the holes for the passage of gases are spaced evenly along the length of the pipe with the opposite holes being displaced relative to each other.

2. The heat exchanger according to claim 1, characterized in that the fastening devices are made in the form of nests rigidly attached to the furnace body, in which the pipe partitions are freely installed, and the partitions are provided with limiters, some of which are rigidly attached to the partitions, and others are detachable compounds. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 706666, cl. F 27 В 7/16, 1978 1-prototype).

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