SU1004726A1

SU1004726A1 - Rotary kiln spill-over heat exchanger

Info

Publication number: SU1004726A1
Application number: SU813333140A
Authority: SU
Inventors: Винцас Винцович Монтвила
Priority date: 1981-09-04
Filing date: 1981-09-04
Publication date: 1983-03-15

Description

Изобретение относится к вращающимся печам барабанного типа, а именно к теплообменным устройствам, и может быть использовано для перемешивания материала.The invention relates to rotary kilns of a drum type, namely to heat exchange devices, and can be used to mix the material.

Известен пересыпной теплообменник 5 вращающейся печи, состоящий из полых усеченных конусов, установленных внутри печи расширенным концом в сторону направления ее вращения Г1Known overflow heat exchanger 5 of a rotary kiln, consisting of hollow truncated cones installed inside the furnace with an expanded end in the direction of rotation G1

Наиболее близким к изобретению Ю по технической сущности и достигаемому эффекту является пересыпной теплообменник, содержащий полые усеченные конусы, установленные на внутренней поверхности печи расширенным '5 концом в сторону ее вращения и расположенные по винтовой линии £2 Недостатком устройства является неудовлетворительный теплообмен.Closest to the invention of Yu in terms of technical essence and the achieved effect is a bulk heat exchanger containing hollow truncated cones mounted on the inner surface of the furnace with an expanded '5 end towards its rotation and located along a helical line £ 2 The disadvantage of the device is poor heat exchange.

Целью изобретения является повыше- ²⁰ние эффективности теплообмена.The invention aims to ²⁰ An increase of the heat exchange efficiency.

Указанная цель достигается тем, что в пересыпном теплообменнике вра- щающейся печи, содержащем полые усеченные конусы, установленные на внут· ренней поверхности печи расширенным концом в сторону ее вращения и расположенные по винтовой линии, высота каждого конуса направлена перпендикулярно к образующей корпуса печи, при этом конусы установлены с касанием между собой.This goal is achieved by the fact that in the overflow heat exchanger of a rotary kiln containing hollow truncated cones mounted on the inner surface of the kiln with the expanded end to the side of its rotation and located along a helical line, the height of each cone is directed perpendicular to the generatrix of the furnace body, while the cones are set with touching each other.

На фиг. 1 показано крепление теплообменника к корпусу печи; на фиг. 2вид А на фиг. 1; на фиг. 3 “ вид Б на фиг. 1.In FIG. 1 shows the fastening of a heat exchanger to a furnace body; in FIG. 2 view A in FIG. 1; in FIG. 3 “view B in FIG. 1.

Пересыпной теплообменник вращающейся печи содержит на внутренйей поверхности корпуса 1 печи с футеровкой 2 прикрепленные посредством кронштейнов 3 теплообменные элементы, выполненные в виде полых усеченных конусов 4. Полые конусы внутри печи установлены расширенным концом в сто рону направления ее вращения с касанием между собой и ступенчатыми рядами по многозаходной винтовой линииThe rotary kiln overflow heat exchanger contains on the inner surface of the furnace body 1 with a lining 2 heat exchange elements attached by brackets 3 made in the form of hollow truncated cones 4. The hollow cones inside the furnace are installed with the expanded end in the direction of its rotation with touching each other and step rows along multi helix

Ступени в рядах образованы смещением конусов относительно друг друга на протяжении винтовой линии. При этом высота ступени составляет 0,1-1,0 длины усеченных конусов. По длине 5 лечи в ступени установлен не менее, Чем один усеченный конус.The steps in the rows are formed by the displacement of the cones relative to each other along the helix. The height of the step is 0.1-1.0 the length of the truncated cones. Along the length of 5 lie down in a step set at least, than one truncated cone.

Высота каждого конуса направлена перпендикулярно к образующей корпуса .печи. ЮThe height of each cone is directed perpendicular to the generatrix of the furnace body. YU

Работа пересыпного теплообменника заключается в следующем.The operation of the bulk heat exchanger is as follows.

При'вращении печи теплообменные элементы внутренней конусной поверхностью поднимают материал, который 15 затем через нижнее отверстие конуса λ высыпается в пространство печи. Благодаря касанию между собой конусы образуют с футеровкой 2 дополнительные карманы 5, в которых материал поднима~2о ется вместе с материалом, находящимся в усеченных конусах 4·. При высыпании материала из усеченных конусов 4 и карманов 5 в процессе повоПри этом высыпание материала из усеченных конусов 4 и обрушение зависающего материала между конусами происходит ступенчато, что существенно улучиает теплообмен в печи.When the furnace is rotated, the heat-exchange elements by the inner conical surface lift the material, which 15 then pours out through the lower opening of the cone λ into the furnace space. Due to the contact between themselves, the cones form additional pockets 5 with the lining 2, in which the lifting material is ~ 2o and the material located in the truncated cones 4 ·. When the material is precipitated from the truncated cones 4 and pockets 5 during the process, the material is precipitated from the truncated cones 4 and the hanging material collapses between the cones in steps, which significantly improves the heat transfer in the furnace.

Claims

The invention relates to rotary drum-type furnaces, namely heat exchangers, and can be used for mixing the material. A rotary furnace pouring heat exchanger is known, consisting of hollow truncated cones, installed inside the furnace with its expanded end in the direction of its rotation Cl 3. The closest to the invention in technical essence and the achieved effect is a pour-over heat exchanger containing hollow truncated cones mounted on the internal surface of the furnace with an expanded co It is located in the direction of its rotation and located along the helix f2 3. The disadvantage of the device is the inadequate heat transfer. The aim of the invention is to increase the heat exchange efficiency. This goal is achieved by the fact that in a pouring heat exchanger of a rotary kiln containing hollow truncated cones mounted on the inner surface of the furnace with an extended end towards its rotation and arranged along a helical line, the height of each cone is directed perpendicular to the generator of the furnace body, while the cones are mounted with touch between themselves. FIG. 1 shows the attachment of the heat exchanger to the furnace body; in FIG. 2, view A in FIG. one; in Fig. 3, view B in Fig. 1, the pour-on heat exchanger of the rotary kiln contains, on the inside surface of the body 1 of the kiln with lining 2, heat exchange elements attached by means of brackets 3, made in the form of hollow truncated cones k. Hollow cones inside the furnace are installed with an expanded end in the direction of its rotation with contact between themselves and stepped rows along a multiple helix. 310 Steps in rows are formed by shifting the cones relative to each other over a helix. The height of the step is 0.1-1.0 the length of the truncated cones. The length of the furnace in the step is set at least, i4eM one truncated cone. The height of each cone is directed perpendicularly to the generator of the casing of the furnace,. The operation of the pour-off heat exchanger is as follows. Adding heat to the furnace, the internal conical surface lifts the material, which then pours into the furnace space through the lower opening of the cone. When the cones touch each other, they form with lining 2 additional pockets 5, in which the material rises together with the material that is in truncated cones. When the material is poured out of truncated cones C and pockets 5, the material slips between the cones It also moves along the lining. Thus, an additional part of the material rises, and with an increase in the angle of its rise, the mixing is improved. 6 At the same time, the material is poured out of truncated cones and collapses freely. The material between the cones occurs in steps, which significantly increases the heat transfer in the furnace. Claims of the Invention Rotary kiln heat exchanger containing hollow truncated cones mounted on the inner surface of the furnace with an expanded end in the direction of its rotation and arranged along a helical line, characterized in that, in order to increase the efficiency of heat exchange, the height of each cone is directed perpendicular to the cone forming furnace, while the cones are installed with a touch between them. Sources of information taken into account in the examination 1. USSR author's certificate number 395688, class, F 27 V 7/16, 1971. 2, USSR author's certificate number 796631, class F 27 V 7/16, 1979 (prototype).