SU1308810A2 - Heat exchanging apparatus for thermal processing of loose materials - Google Patents

Abstract

The invention relates to the heat treatment of materials (M) and m. used in the chemical industry. The invention allows to intensify the processes of heat treatment and classification. Spring palyts 1 10 heat exchanger-separator (TS) are equipped with perforated sloping visors (K) 11, located along the entire length of the fingers. A longitudinal plate 14 is attached to each pipe 6 of the vehicle. The plates 14 allow you to set the gaps 15. The size of the latter can be chosen according to the size of the particles to be processed. The vehicle is installed in the compartment for small particles M. Particles of the fines fraction are eliminated on the upper vehicle. They enter the downstream vehicle, where they continue to move along surfaces K 11, moving to gaps 15 And intensively interact with air entering through perforations K p 11. Meeting arriving at high speed through gaps 15 air flow, particles are weighed again. thrown onto the K 11 surface. 3 Il. S (L ffch (t ×) co oo oo / -. G and 11 .11 1 to

Description

The invention relates to the heat treatment of bulk materials, can be used in the chemical and other sectors of the industry. It is an improvement of the apparatus according to the author. St. No. 1173137.

The purpose of the invention is to intensify the processes of heat treatment and classification.

FIG. 1 schematically shows the proposed apparatus; FIG. 2 shows a tubular heat exchanger-separator; in fig. 3 shows section A-A in FIG. 2

The heat exchanger contains a vertical casing 1, divided by partition 2 into compartments 3 and 4 for small and large particles, made as screen heat exchangers-separators 5, consisting of fixed pipes 6, interconnected by collectors 7 and 8, respectively. for input and output of water, and fingers 10 spring-loaded by means of springs 9 with perforated inclined visors 11 installed along the entire length of fingers 10 For fixing fingers 10 there are angles 12 and 13. A longitudinal plate 14 is attached to each pipe 6, forming The outer edge of the adjacent goat 11 is a longitudinal gap 15, the size of which can be set in accordance with the particle size of the material being processed. The loading nozzle 16 has obliquely installed guide plates 17. In the upper part of the apparatus there is a pneumatic chamber 18 with curved shelves 19, the lower of which has a spring-loaded valve 20. Compartment 4 for heat treatment of large particles has perforated shelves 21 and flap 22 . In the lower part of the apparatus, nozzles 23 and 24 are provided for the removal of small and large particles from the apparatus.

The apparatus for heat treatment of bulk materials works as follows.

Particles of the fine fraction, sifted out on the upper heat exchanger-separator 5, through the system of inclined guide plates 17 enter the compartment 3 on the underlying heat exchanger-separator 5, where they continue to move along perforated inclined surfaces of the visors 11 mounted on spring-loaded fingers 10 The material particles on these surfaces move down to the gaps 15, intensively interacting with the air flow moving through the perforations of the visors 11. The air flow entering through the gaps 15 with a large velocity growth, the particles are weighted and are thrown back on the inclined surface of the perforated peaks 11, where they continue their movement. As a result of this movement of air and material, the residence time of the material on the heat exchanger-separator 5 is increased, the material is more intensively in contact with the air flow 45, as a result of which a deeper heat treatment of the material is achieved. Part of the heat is transferred by the material or perceived upon contact with the side surfaces of the longitudinal plates 14

Polydisperse material is fed

into the housing along the loading nozzle 16, 50 and the heat exchanging tubes 6. accelerates along a system of guides

plates 17 and enters the upper large particles, the passage of the upper

heat exchanger-separator 5, where section heat exchanger-separator 5, fall

It is divided into three fractions and partly in-compartment 4, the smallest fraction

is processed by the upward flow of air-55 is carried by the air flow to dust and dust. Attached to the pipes to the bottom of the chamber 18, the chamber 18, and from it into the cyclin plates 14 allow installation. The smallest particles to form gaps 15 between the bottom edge of the material being processed, which are pop-perforated peaks 11 and the side edges give the space between the curved

O

0 35

The surfaces of the plates 14 are constant over the entire length of the heat exchanger-separator 5, which makes it possible to more efficiently classify the source polydisperse material into large and small fractions. When the pieces of the processed material strike the fingers 10, the latter are caused to oscillate due to the deformation of the springs 9 fixed on the corners 13. The corners 12 are installed to prevent the springs 9 from clogging on them. I The oscillations of the fingers 10 contribute to the movement and turning of the material particles on the heat exchanger-separator This is at the same time the role of an effective screen. The magnitude of the gaps 15 is established based on a predetermined separation boundary of the processed polydisperse material into fractions.

Particles of the fine fraction, sifted out on the upper heat exchanger-separator 5, through the system of inclined guide plates 17 enter the compartment 3 on the underlying heat exchanger-separator 5, where they continue to move along the perforated inclined surfaces of the visors 11 mounted on the spring-loaded fingers 10. The material particles on these surfaces move down to the gaps 15, intensively interacting with the air flow moving through the perforations of the visors 11. The air flow entering through the gaps 15 with a large velocity growth, the particles are weighted and are thrown back on the inclined surface of the perforated peaks 11, where they continue their movement. As a result of this movement of air and material, the residence time of the material on the heat exchanger-separator 5 is increased, the material is more intensively in contact with the air flow 45, as a result of which a deeper heat treatment of the material is achieved. Part of the heat is transferred by the material or perceived upon contact with the side surfaces of the longitudinal plates 14

five

thirty

40

313088

the shelves 19 and the housing 1 are periodically overloaded, creating the necessary pressure on the spring-loaded valve 20.

Claims (1)

Invention Formula five Heat exchanger for heat treatment of bulk materials. Aut. St. No. 1173137, characterized by the fact that, in order to intensify 18 19 104 heat treatment and classification processes, the heat exchanger-separator's green fingers are provided with perforated inclined visors located along the entire length of the fingers, and a longitudinal plate is attached to the caazda tube of the heat exchanger-separator, passing between the respective adjacent visors. 22 23 (rig.1 iiii Water ig.2 Editor O. Golovach Compiled by Y. Martinchik Tehred L. Oleinik Order 1788/31 Circulation 637. Subscription VNIIPY USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4  r f I Water Proofreader M. Peugeot