SU1274737A1 - Apparatus for wet dust trapping - Google Patents

Abstract

SUBSTANCE: invention relates to arranging stations for wet dust removal and allows continuous discharge of dry dust collectors working with both neutral and explosive gases under pressure, eliminating the emission of dust and gas into the atmosphere, ensuring safe work with harmful explosive gases and increasing the efficiency of the dust collector to maximum value. The device contains a nozzle I of the feed inlet connected to the hopper 3 of a dry dust collector and to a sealed receiving wetting chamber 4 in which the water in the bath serves as a hydraulic lock to prevent rada from escaping into the atmosphere. At the top of the hour (L ti receiving chamber 4 wetting mouth

Description

A double-slot ring distributor 5 is connected to the water inlet 7 to eliminate the build-up of dust at the dry and wet interface. In the conical part of the wetting receptacle 4, a nozzle 8 of the pulp outlet is installed, having a conical seat and supplying a shut-off emergency valve 10 of the float type, which, in an emergency position, overlaps it, forming a hydraulic lock, the height of water in which does not depend on the pressure in the cell. The wetting receiving chamber 4 has a water level regulating device 12 in the form of a discharge pipe 13, at one end of which a float regulator 14 is installed, and the other end is connected above the conical seat to the nozzle 8 of the slurry outlet into the sludge collector 15 with the sludge line 16 and a pump 17. I Il.

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The invention relates to gas cleaning and dust collection and can be used in the metallurgical industry and in other sectors of the national economy as a hydraulic device for hydraulic traps with a hydraulic system for removing ash or dust.

The purpose of the invention is to provide continuous unloading of dust from a dry dust collector that works with both neutral and explosive gases under pressure, and to increase reliability of operation by eliminating the accumulation of dust at the dry and wet boundary.

The drawing shows a device for wet dust removal, a general view.

The wet dust removal device contains a BBozja pipe nozzle 1 connected through a locking device 2 to a dry dust collector 3, and a sealed wetting chamber 4, which serves as a hydraulic gate to prevent water from escaping into the atmosphere from the pressure working dust collector. In the upper part of the wetting chamber 4, a double-slotted ring distributor 5 is installed, connected via a check valve 6 to a water inlet 7 to eliminate dust from the dry and wet boundary. In the conical part of the wetting chamber 4 there is a pulp outlet 8 that has a conical seat 9 and fitted with a shut-off emergency valve 10 of the float type.

installed in the guides 1-1 and allowing the hydraulic seal to be filled, the height of the water in which does not depend on the pressure in the dust collector working with an explosive gas. When working with a neutral gas, the emergency safety valve 10 may be excluded.

The wetting receiving chamber 4 has a water level regulating device 12 in the form of a discharge pipe 13, one end of which has a float regulator 14 for flow, and the other end is connected to a pulp outlet port 8 above the conical seat 9. The outlet pipe 8 of the pulp is brought into the collection tank 15, connected through shlamoprovod 16 pump; 17. The gas pressure above the mirror of the water in the bath allows, depending on the operating conditions of the device, to transport the spam through the sludge line 16 without the sludge collector 15 and the pump 17. For better wettability, surfactants can be added to the water depending on composition of dust.

The device works as follows.

Claims (1)

Water is continuously supplied to the wetting receiving chamber 4 through a water inlet nozzle 7 with a check valve 6 and a double-slotted ring distributor 5 by two continuous streams, one of which cuts off dry dust from the walls of the wetting receiving chamber 4, and the other walls, washes them. Dry dust, which is uninterruptedly flowing into the receiving chamber 3, wetting through the dust inlet 1 from the dust collector bin 3, wetted in a water bath, is discharged in the form of pulp (sludge) into the collector 15 through an annular gap formed between the working part of the shut-off valve valve 10 and the outlet pipe 8 of the pulp, when the level of the water bath rises above the shut-off emergency valve 10, which, moving along the guides 11, takes its upper position. The maximum level of the water bath (water seal) fluctuates between positions A and B and is controlled by the float flow control 14. When the water bath level is equal to position A, the flow regulator 14 closes the outlet of the first pipe 13, and the slurry is discharged through an annular gap, the water carrying capacity of which is less than that of the water inlet 7, and therefore after some time the water level bath rises to position B, at which the flow controller 14 opens the discharge pipe 15, and the slurry enters the sludge collector 15 not only through the annular gap, but also from the leading pipeline 13. Their total capacity for water above Than throughput pas deckhouse 7 I water. As a result of their joint work, the level of the water bath drops to position A. At 374 emergency shutdown of the water supply to the wetting receiving chamber 4, the water bath level drops below position A and the shut-off emergency valve 10, moving in the guides I1, is lowered by the working member the conical saddle 9 of the nozzle 8 of the pulp outlet and, by shutting it down, prevents a further decrease in the water level of the hydraulic seal. At the same time, the locking device 2 closes the dust inlet 1. An invention for a wet dust removal apparatus comprising a wetting receiving chamber and nozzles for introducing a pypi inlet; and a pulp outlet, characterized in that, in order to continuously discharge dust from a dry pressure pulverizer, and to improve reliability by eliminating sticking Pipi at the boundary of the dry and wet receiving wetting chamber is equipped with an annular distributor connected to the water inlet fitting, with a water level regulating device made in the form of a discharge pipe at the inlet end q is oriented float regulating water flow controller, and the other end connected to the output pipe of the pulp, which is provided with a conical seat and an emergency shut-off valve.