CN111964469A

CN111964469A - Sintering ash handling equipment

Info

Publication number: CN111964469A
Application number: CN202010809408.9A
Authority: CN
Inventors: 解海波
Original assignee: Beijing Shougang International Engineering Technology Co Ltd
Current assignee: Beijing Shougang International Engineering Technology Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-11-20

Abstract

A sintering ash removal device belongs to the technical field of sintering production. The device comprises a grate rapping machine, a grate sweeper, a collecting hopper, a burning-1 belt, a bin pump and a dust removing bin. The grid section rapping machine and the grid section cleaning rack are arranged on a collecting hopper, and the collecting hopper is connected with a burning-1 belt through a chute; the bin pump is positioned below the large flue and the ash bucket of the circulating flue gas pipeline; the bin type pump is connected with the dust removal ash bin through a pipeline. The method has the advantages that the pneumatic conveying device is applied to the ash treatment system of the sintering main plant, the original small-grid hopper platform is omitted, and only the sintering machine and the head and tail frame foundation beams are left; the large flue height is lifted, the bottom plane space is purified, the ash belt is omitted, and the problem that people and vehicles are inconvenient to pass is solved.

Description

Sintering ash handling equipment

Technical Field

The invention belongs to the technical field of sintering production, and particularly relates to a sintering ash removal device.

Background

The sintering large flue and the flue gas circulation pipeline mainly fall dust by gravity, and the dust fall device has the advantages of low dust fall energy consumption, large dust amount, high sealing requirement, severe working environment and easy secondary dust raising. A double-layer ash discharge valve and an ash belt are arranged below the large flue, dust is conveyed to a plate feeder or a burning-1 belt conveyor and conveyed to a finished product grading system, most of the dust is collected again as environmental dust, and the dust is conveyed to a sintering and distributing chamber through a suction and discharge tank truck or a buried scraper conveyor or conveyed to a sintering and distributing chamber through pneumatic dust conveying. The equipment is more, the process is complex, and the interlocking relationship is complex; the same applies to the flue gas recirculation line. The pipeline is provided with a conical ash discharge hopper, an air locking ash discharge valve or a double-layer ash discharge valve and a buried scraper conveyor/ash belt below the pipeline, the conical ash discharge hopper, the air locking ash discharge valve or the double-layer ash discharge valve and the buried scraper conveyor/ash belt are poured onto the ash belt below the large flue, the process flow is lapped again, and dust of the environmental dust removal system is collected again and a subsequent sintering batching flow is completed. The sintering ash is returned to the ring operation, the operation rate of the ash conveying system is low, the control is complex, the maintenance is too frequent, the failure rate is high, the labor intensity is high, the environment is severe, and more factors such as labor protection and safety protection are considered. All of them are not beneficial to energy conservation and environmental protection and not beneficial to organized emission of dust.

Disclosure of Invention

The invention aims to provide a sintering ash removal device, which solves the problems of more bottom equipment, large occupied area and inconvenience in passing of a sintering main factory building; the air locking of the dust discharging device is bad, and secondary dust is raised.

A sintering ash removal device comprises a grid vibration machine 1, a grid sweeper 2, a collecting hopper 3, a burning-1 belt 4, a bin pump 5 and an ash removal bin 6. The grid section rapping machine 1 and the grid section sweeper 2 are erected on a collecting hopper 3, and the collecting hopper 3 is connected with a burning-1 belt 4 through a chute; the bin pump 5 is positioned below the large flue and the ash hopper of the circulating flue gas pipeline; the bin pump 5 is connected with the dust removal ash bin 6 through a pipeline.

The bin pump 5 is provided with a dome valve and has an inflation sealing function; the number of the bin pumps 5 depends on the length of the flue or the duct and the amount of ash.

The using method of the device comprises the following specific steps:

1. in the sintering production process, the grid vibration machine 1 is opened, and then the grid sweeper 2 is opened;

2. the small lattices produced in the production are rapped from the grate rapping machine 1, cleaned into a collecting hopper 3 by a grate sweeper 2, dropped onto a burning-1 belt 4 through a chute and sent to a finished product grading system;

3. the bin pump 5 is hung or arranged on the ground below the ash bucket of the large flue and the circulating flue gas pipeline, and the bin pump 5 pneumatically conveys the dedusting ash into the dedusting ash bin 6 in the batching chamber through the pipeline to participate in sintering batching.

The invention has the advantages that: the pneumatic conveying device is applied to an ash treatment system of a sintering main plant, an original small-grid hopper platform is omitted, and only a sintering machine and a head-tail frame foundation beam are left. The large flue height is lifted, the bottom plane space is purified, the ash belt is omitted, and the problem that people and vehicles are inconvenient to pass is solved. Meanwhile, the overall height of a sintering main workshop is reduced, capital construction investment is saved, the climbing difficulty of a mixed/bottom material laying belt is reduced, and design and production are facilitated. This is a single intensive, reduced improvement of the sintering process.

Drawings

Fig. 1 is a device connection diagram. Wherein, the grate rapping machine 1, the grate sweeper 2, the aggregate bin 3, the burning-1 belt 4, the bin pump 5 and the dust removing bin 6.

Detailed Description

The bin pump 5 is provided with a dome valve and has an inflation sealing function;

the using method of the device comprises the following specific steps:

In the attached drawing, a grid rapping machine 1 is arranged on the original first small grid hopper position of the return stroke of the trolley, and one or more sets of grid sweeping machines 2 are arranged respectively, so that small grid particles adhered to the grid or clamped and plugged in gaps on the side part can be thoroughly removed. The removed small lattices fall into the collecting hopper 3. The collecting hopper 3 can be used as an old small-grid hopper or can be manufactured again according to a newly-arranged ring beam. After that, the small-grid hopper is not arranged on the continuous return stroke, and the small-grid hopper platform can be cancelled. For installation and maintenance of sintering machine, elbow soft connection, maintenance of electric air door and auxiliary equipment, steel walking table can be additionally arranged. The small lattice materials are discharged from the collecting hopper 3 to a burning-1 belt 4 under the circular cooler through a chute, and are sent to a finished product granulating system together with the sintered cakes. The large flue and the ash bucket of the flue gas circulating pipe are connected with a bin type pump 5, and are arranged in series and in parallel in a segmented mode according to the processing capacity of the pump bin. The sintering ash is sent to a dedusting ash bin 6 of the batching chamber through a pipeline to participate in the sintering batching.

The bin pump 5 completes opening and closing actions by rotating the dome valve, and guarantees sealing effect through the inflatable sealing ring on the periphery of the dome. The pump bin body is provided with a high-low material level meter, the high level automatically pumps ash, and the low level automatically receives ash. The bin pump 5 is suitably fixedly hung below the ash bucket.

All metering data and equipment start and stop signals of the bin pump 5 are connected into the bin pump PLC system in an interlocking mode. And the sintering master control chamber is provided with a display.

The grate rapping machine 1 and the grate sweeper 2 do not participate in interlocking.

All equipment is operated continuously.

Claims

1. A sintering ash removal device is characterized by comprising a grate rapping machine (1), a grate sweeper (2), a collecting hopper (3), a burning-1 belt (4), a bin pump (5) and a dust removal ash bin (6); the grate bar rapping machine (1) and the grate bar sweeper (2) are erected on the aggregate bin (3), and the aggregate bin (3) is connected with a burning-1 belt (4) through a chute; the bin pump (5) is positioned below the large flue and the ash bucket of the circulating flue gas pipeline; the bin pump (5) is connected with the dust removal ash bin (6) through a pipeline.

2. The device according to claim 1, characterized in that said cartridge pump (5) is provided with a dome valve with an inflatable sealing function.

3. The device according to claim 1, wherein the method for using the device comprises the following specific steps:

1) in the sintering production process, the grid vibration machine (1) is opened, and then the grid sweeper (2) is opened;

2) the small lattices produced in the production are rapped from the grate bar rapping machine (1), are swept into a collecting hopper (3) by the grate bar sweeper (2), fall onto a burning-1 belt (4) through a chute and are sent to a finished product grading system;

3) a bin type pump (5) is hung or arranged on the ground below an ash bucket of the large flue and the circulating flue gas pipeline, and the bin type pump (5) pneumatically conveys dedusting ash into a dedusting ash bin (6) in the batching chamber through the pipeline to participate in sintering batching.