SU1767293A1 - Device for removing ash - Google Patents

Abstract

Use: for removing ash from boiler units equipped with electrostatic precipitators. SUMMARY OF THE INVENTION: The installation of the boiler unit comprises a duct that discharges ash from the bunker of the electrostatic precipitator, a hydraulic ash removal system with a washing machine, a pneumatic ash removal system, an ash conductor, and a storage bunker. The channel is equipped with a device for drainage and supply of dry ash in the form of an ejector with the possibility of the passage of ash to hydrotransport. 1 il.

Description

The invention relates to a technique for removing ash from boiler units equipped with electrostatic precipitators and can be used in thermal power plants.

A known ash and slag removal system includes a device for removing and pneumatic conveying of ash, a slag bath, a screw conveyor for removing slag, a slag crusher and a slag dryer. Moreover, the screw conveyor is equipped with a drainage chamber with a filter and is removed outside the chamber for a distance that provides slag dehydration by 85-90%, and the slag crusher has a steam outlet and the slag dryer is connected to the ash transport unit 1.

The unit for collecting dry ash and transporting it to the bunker-filler using vacuum pumps, taken as a prototype, consists of a ash collector, into which ash is fed through a funnel installed in the bunker. Due to the vacuum created by the vacuum pump, ash is transported to precipitation chamber with a bag filter and then enters

storage bin, from where it is issued to motor transport.

The plant is additionally equipped with a hydraulic system for transporting ash when it is supplied to the ash wash unit via channel 2.

The disadvantage of it is the complexity of the design

The purpose of the present invention is to simplify the design and increase efficiency.

The goal is achieved by the fact that the ash removal plant, containing a channel that discharges ash from the electrostatic precipitator hopper and is connected by a hydraulic ash removal system to the ash removal unit, a pneumatic ash removal system, an ash line and a filler silo, is equipped with an ejector built into the channel and connected to the ash disposal and providing passage of ash into the system of hydraulic ash removal.

FIG. 1 shows a general installation diagram; Fig 2 - the device for the selection and supply of dry zone

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The ash removal and disposal unit consists of bunkers 1, an electrostatic precipitator 2, of which ash collected through the receiving funnel 3 of a device for collecting and feeding dry ash built into the gold pipe 4 is fed to the pressure pipe gold 6 by means of an ejector 5. the ashes are installed on each bunker and with the help of ash the ash is removed by common ash pipeline 6 to the ash depositor 7. Air from the ash settler 7 is sucked through the air duct b into the duct 9 smoke gases, and the ash SelfTime is lowered into the hopper 10 and through the stop valve 11 and the sawdust ntovy sleeve 12 is provided on vehicles equipped with the pneumatic system 13. Set consisting of a blower compressor 14, air manifold 15, a supply air conduit 16 present.

A dry ash extraction device is installed in the gold pipeline 4 in such a way that it ensures the passage of ash to the hydrotransport, including the gold washing device 17 and the ash channel 18.

The main working element of the device for the collection and supply of dry ash is an ejector 5 installed in channel 4 directly under the funnel 3, into which air is fed under pressure through the air line 16. Air, exit from the ejector at high speed (due to channel narrowing), it creates a rarefied area under the funnel where the ash flows through the funnel 3 and goes along the gold pipeline 6 to the consumer. When the pneumatic system is shut off, the ash through channel 4 passes freely to the washing machine 17 and is delivered to the consumer by hydraulic transportation.

The invention makes it possible to free the production space from the excessive accumulation of branch ducts, to reduce the costs of manufacturing, installing, operating and repairing equipment in a compact manner.

Claims (1)

Claims An installation for removing ashes, comprising a channel that discharges ash from the bunker of the electro-filter and is connected to the hydraulic ash disposal system with the ash removal unit, a pneumatic ash removal system, an ash line and a storage bunker, characterized in that, in order to simplify the design and increase efficiency, it is equipped with an ejector built into the channel, connected to the gold pipeline and ensuring the passage of ash into the hydraulic ash removal system. g 1 V SE2 iS 4 fibitfolbie - r & y & zdm, ash 4 .k: i €