SU1526840A1 - Dust collector-heat exchanger - Google Patents

Abstract

The invention relates to gas cleaning devices for dust, used in gas cleaning plants, in which gas is required to be pre-cooled and cleaned before cleaning gas in bag filters, and reduces the energy costs of cleaning. Inside the dust precipitation chamber a confused-diffuser dust separator is placed, the walls of which have cavities for the circulation of heated air, connected by channels to the collecting air collector, and by means of overflow pipes to the internal cavities of the tubular heat exchangers forming the longitudinal walls of the dust-collecting chamber. 2 Il.

Description

The invention relates to a technique for cleaning gases from dust and can be applied in gas cleaning plants, when prior to cleaning gases in bag filters, pre-cooling and reduction of dust concentration is required,

The purpose of the invention is to reduce the energy costs of cleaning, the possibility of utilizing the heat of heated air, reducing labor intensity in the manufacture of the device and increasing the degree of purification.

Fig, 1 shows a dust collector-heat exchanger, cross section; Fig. 2 shows the layout of the distribution and collection collectors;

The pepeulopile heat exchanger consists of wasps. The shield chamber 1, inside which a confused-diffusor two-stage dust collector is installed, consists of 1 diffusers 2, equipped with confusors 3 on the gas inlet side. The longitudinal sides of the sedimentation chamber are formed by tubular heat exchange chambers 4, inside which heat exchange tubes 5 are installed. , At the top of the pipe 5, exit to the distribution manifolds 6. In the upper part of the apparatus, there is a collecting collector 7 of heated air. Below the collecting collector 7 there is a distributing collector 8 of dusty gas, washed from all sides with cooling air supplied through the channels 9. The tubular chambers 4 are connected by overflow pipes 10 to the internal cavities 11 of the chambers. The tubular chambers 4 are provided with partitions 12, providing cross-flow of air, which is fed into the internal cavity of the heat exchange chambers through distributing collectors 13,

Collectors can be located either inside the chamber or inside the chamber. At the bottom

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portions of the heatpipe pipes enter the gas collection manifolds 14 for the gas through which the cooled and purified gases are removed from the apparatus.

Collecting collectors for ha and sablep hoppers 15 with a device 16 for dust dusting.

At the bottom of the chamber there is a bunker 17 with a device 18 for continuously removing the pan.

Dust collector heat exchanger works in the following 1 and 1 way.

Under the action of a vacuum created by a fan (not shown), the gas flow from the distributing manifold 8 is dust-fed into the end of the separator 3, where the flow is somewhat compressed, and the particles are picking out towards the center. From the confuser, the flow with BHCOKOII speed enters the diffuser part 2 of the first stage of the psheuscore. In the diffuser, the flow is expanded, while the largest dust particles retain their trajectory and, together with part of the gas flow, the confuser 3 of the second stage of the dust separator enters. The gases cleaned due to expansion come out through the gap between the mouth of the diffuser and the confuser into the cavity of the dust-collecting chamber 1. Under the condition of rarefaction, gases rise to the upper part of the pyro-insulating chamber 1, giving up their heat to the inside of the walls of the heat exchangers. chambers and outer walls of the copfusor-diffuser unit of the nepBofi stage. The passage through the slots between the overflow pipes 10, the gas releases its heat to the air passing inside the pipes and enters the distribution manifolds 6. This also enters the gas flow, the output of which is from the second stage diffuser.

The gases cleaned in the confuser-diffusor dust separator pass through the heat exchange tubes 5 and transfer their heat to the air circulating between the tubes. The exit from the heat exchanging pipes, the gas flow changes direction from the descending to the horizontal, while releasing a certain amount of piercing, which accumulates, in the bunkers 15. From the bunkers, dust is periodically removed through the pressing devices 16. The dust deposited in the chamber 1 accumulates in the bunker 17, from where it is continuously removed by the dust-removing device 18. Air, not from p. Ii to precipitate gases, enters through the collector Ji Uie collectors 13 into the internal cavities of the heat exchanger chambers 4, passes through the heater tubes and enters the flow clean nozzles 10. From the nozzles, air enters the internal cavity of 11 con (; the diffuser of the first stage separator. From there, through the channels 9, it flows into the co-section (.: 1st collector 7. During the air flow, the internal nozzles confused diffuser dust separator

and additional heat transfer is made to the collecting manifold. The heated air comes out of the collection manifold 7 and can be

used for heating or

technological purposes. The mutual arrangement of the dispensing manifold 8 of the injected gas and the collecting manifold 7 of the heated air

(Fig.2) makes it possible to maintain high gas and air velocities in the collectors, ITO promotes intensive heat exchange. The technical and economic efficiency of the invention, compared to the known one, lies in the fact that we propose; The amrate allows the use of heat from the air, moreover, the economic efficiency is attained due to a higher degree of dust collection, resulting in a decrease in the number of regenerations in the bag filter, and consequently, the service life of the sleeves and

reduced flow rates; compressed air.

Claims (1)

Invention Formula The dust collector is a heat exchanger that is compiled from distributing and collecting collectors of dusty gas and preheated air, precipitation and heat exchange chambers and for collecting dust from one another in order to reduce energy costs on cleaning, the possibility of utilizing the heat of heated air, reducing labor intensity in the manufacture and increasing the degree of purification, the sedimentation chamber is equipped with a confusion-diffuser dust separator, made with hollow walls, and the cavity of the walls of the joint: collector preheated air, and when using overflow pipes - with internal heat exchange cavities chambers equipped with heat exchange tubes, forming longitudinal CTeir ki precipitating chamber. sixteen bozdukh FIG. g