CN216726237U

CN216726237U - Dust treatment device for boiler

Info

Publication number: CN216726237U
Application number: CN202123353201.4U
Authority: CN
Inventors: 刘志明; 陈航; 周飞; 胡挺
Original assignee: Hubei Yunhuaan Chemical Co ltd
Current assignee: Hubei Yunhuaan Chemical Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-14
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a dust treatment device for boiler belongs to synthetic ammonia technical field. The dust collector comprises a box body, a pattern plate, a plurality of cloth bags and dust buckets, wherein the bottom of each dust bucket is connected with the dust warehouse through a pipeline with a warehouse pump; only part of the bag type dust collector works; a pre-spraying nozzle is arranged at the upper part in the box body and below the pattern plate, and is connected with the ash bucket through a spraying pipeline with a fan and a first control valve; the outlet of each bin pump is uniformly divided into N conveying pipelines for output, one conveying pipeline is output to an ash bin, the other N-1 conveying pipelines are respectively output to the upper parts of ash buckets of the other N-1 bag-type dust collectors, and each conveying pipeline is provided with a second control valve; the dust in the ash bucket of the working bag type dust collector can be sent to the bag type dust collector ready for starting to work to pre-spray the cloth bag. Before the dust remover is used, the surface of the cloth bag is coated with dust in other dust removers to protect the cloth bag.

Description

Dust treatment device for boiler

Technical Field

The utility model belongs to the technical field of synthetic ammonia, in particular to a dust treatment device for a boiler.

Background

Ammonia (Ammonia), an inorganic compound of the formula NH₃Molecular weight of 17.031, colorless, and strong pungent smell. Is easily liquefied into colorless liquid. It can be liquefied by pressurizing at room temperature (critical temperature 132.4 deg.C, critical pressure 11.2 MPa, 112.2 atm).

The industrial production of ammonia is mostly carried out by synthesis from nitrogen and hydrogen at high pressure and temperature in the presence of a catalyst. The nitrogen mainly comes from air; hydrogen is derived primarily from synthesis gas containing hydrogen and carbon monoxide. Generally, industrial ammonia production typically includes the following sections: supply auxiliary workshop section: providing pulverized coal, low-pressure steam, medium-pressure steam, high-pressure steam, circulating water and the like, wherein the main equipment comprises a boiler, a water cooling tower, a ball mill, a bag type dust collector and the like; a gasification section: the mixed gas is used for reacting the carbon powder with water to obtain the mixed gas of carbon monoxide and hydrogen; a purification section: the hydrogen purifying device is used for purifying the mixed gas to obtain hydrogen with higher purity; an air separation section: used for processing air to obtain nitrogen; a synthesis section: the ammonia gas is obtained by reacting nitrogen and hydrogen and is liquefied; a filling section: the device is used for storing liquid ammonia and loading liquid ammonia, and comprises an ammonia tank, a loading pump, a loading crane pipe and the like.

In the case of the bag type dust collector, the applicant found that smoke generated during charging of coal and smoke generated during removal of the oven door contain a small amount of viscous substances such as fly ash, tar and other oily particles. Once the sticky substances are bonded on the cloth bag of the cloth bag dust remover, the resistance of the dust remover is increased, and the cloth bag is hardened finally after long-term operation, so that the dust remover loses the function. In addition, as the sticky substances are all combustible and are bonded on the cloth bag, the fire risk of the cloth bag in the dust remover catching fire is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the embodiment of the utility model provides a dust treatment device for boiler, before the dust remover uses in the sack surface with the dust spraying coating in other dust removers in order to protect the sack. The technical scheme is as follows:

the embodiment of the utility model provides a dust treatment device for boiler, the device includes ash storehouse 1 and N bag collector 2, N is more than or equal to 2 integer, bag collector 2 includes box 3, the interior card of upper portion of box 3, in the box 3 and fix a plurality of sacks and the ash bucket 4 of box 3 bottom in the card downside in the box 3, the bottom of each ash bucket 4 is connected with ash storehouse 1 through the pipeline of taking storehouse pump 5; only part of the bag house 2 works; at least one pre-spraying nozzle is arranged at the upper part in the box body 3 and below the pattern plate, and the pre-spraying nozzle is connected with the upper part or the middle part of the ash bucket 4 through a spraying pipeline 9 with a fan 6 and a first control valve 7; the outlet of each bin pump 5 is uniformly divided into N conveying pipelines for output, one conveying pipeline is output to the ash bin 1, the other N-1 conveying pipelines are respectively output to the upper parts of the ash hoppers 4 of the other N-1 bag-type dust collectors 2, and each conveying pipeline is provided with a second control valve 8; the dust in the dust hopper 4 of the bag collector 2 in operation can be sent to the bag collector 2 ready for operation to pre-coat the cloth bag.

Specifically, the number of the bag house 2 in the embodiment of the present invention is three, and three bag houses 2 constitute one or two or one or two.

Preferably, the middle part of the ash bucket 4 in the embodiment of the present invention and the position where the pre-spraying amount is satisfied are provided with the visible window 10.

Further, the embodiment of the utility model provides an upper portion outside of box 3 is equipped with annular duct 11, the spraying nozzle passes through communicating pipe and is connected with annular duct 11 in advance, annular duct 11 and spraying pipeline 9 intercommunication, communicating pipe outwards passes box 3 and its and 3 sealed fixed connection of box.

Specifically, the embodiment of the present invention provides a case 3 which is a rectangular case and has at least one pre-spraying nozzle on four sides.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the embodiment of the utility model provides a dust treatment device for boiler, before the flue gas gets into the dust remover inside, will be just storing in the dust remover of work dust remover dust (dry powder, keep apart effectually) through the pipeline spray-feed to the dust remover inside, make dust remover sack surface form one deck dust spraying layer. Therefore, the viscous smoke dust firstly contacts with the coating after entering the bag-type dust collector, so that the viscous smoke dust loses the bonding property, and the bag is protected. In addition, when the dust can not be stored in the dust warehouse, the dust can be sent to an idle dust hopper to be stored.

Drawings

Fig. 1 is a schematic structural diagram of a dust treatment device for a boiler according to an embodiment of the present invention.

In the figure: 1 ash storehouse, 2 bag collector, 3 boxes, 4 ash buckets, 5 storehouse pumps, 6 fans, 7 first control valves, 8 second control valves, 9 spraying pipelines, 10 visual windows, 11 annular pipes and 12 third control valves.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the embodiment of the present invention provides a dust treatment device for a boiler, which includes an ash silo 1 and N bag-type dust collectors 2, where N is an integer greater than or equal to 2. The bag type dust collector 2 comprises a box body 3 (specifically, a rectangular box body, an air inlet is formed in the lower portion of the box body, an air outlet is formed in the top of the box body), a pattern plate on the inner upper portion of the box body 3, a plurality of cloth bags fixed on the lower side of the pattern plate in the box body 3, ash buckets 4 (specifically, conical structures with the large upper portions and the small lower portions) at the bottom of the box body 3 and the like, and the bottom of each ash bucket 4 is connected with an ash bin 1 through a pipeline (one of the pipeline) with a bin pump 5. The structure is basically the same as that of the existing dust processing device: the difference lies in that: only part of the bag house 2 works, and for practical production, only part of the bag house 2 works normally, such as one use and one spare. The upper portion just is equipped with at least one spraying nozzle in advance (the most common nozzle can (like the duckbilled nozzle) below that is located the card in box 3, and the spraying effect requirement to the dust is not high in this embodiment), and spraying nozzle in advance passes through the spraying pipeline 9 that takes fan 6 and first control valve 7 (close when not spraying) and is connected with the upper portion or the middle part of ash bucket 4 (adsorb the dust in the ash bucket 4 through the negative pressure, is located the top that reaches the position that satisfies the spraying quantity in advance optimally). The outlet of each bin pump 5 is equally divided into N conveying pipelines for outputting, one conveying pipeline is output to the ash storehouse 1 to convey dust to the ash storehouse 1 for storage, the other N-1 conveying pipelines (the second control valve 8 on the other conveying pipelines is closed under normal conditions) are respectively output to the upper parts (convenient for dust raising and convenient for conveying) of the ash hoppers 4 of the other N-1 bag type dust collectors 2, and each conveying pipeline is provided with the second control valve 8 to gate the conveying pipeline. The dust in the ash hopper 4 of the working bag-type dust collector 2 can be sent to the bag-type dust collector 2 ready for starting to pre-coat the cloth bag (at this time, the first control valve 7 is opened, and the fan 6 works). Further, a third control valve 12 is arranged on a pipeline between the inlet of the bin pump 5 and the discharge hole at the bottom of the ash bucket 4 for control.

Specifically, the number of the bag house 2 in the embodiment of the present invention is three (three bag houses 2 are disposed side by side), and the three bag houses 2 constitute one or two or one or two.

Preferably, referring to fig. 1, a visual window 10 is provided at a position in the middle of the ash hopper 4 to satisfy the amount of the pre-spraying dust in the embodiment of the present invention so as to observe the amount of the pre-spraying dust. If the bag type dust collector 2 needs 2 cubes of dust for pre-spraying, a visual window 10 is arranged at the position of the lower part of the dust hopper 4, which is just used for containing 2 cubes of dust. The visual window 10 can be observed manually, and a photoelectric sensor can be arranged at the visual window 10 for automatic control.

Further, referring to fig. 1, an annular pipe 11 is disposed on the outer side of the upper portion of the box body 3 in the embodiment of the present invention; the annular tube 11 is in particular rectangular and is fixed to the outer wall of the tank 3. The pre-spray nozzle is connected with the annular pipe 11 through a communicating pipe, and sprays dust towards the upper part of the cloth bag. The annular pipe 11 is communicated with the spraying pipeline 9, and the communicating pipe outwards penetrates through the box body 3 and is fixedly connected with the box body 3 in a sealing mode. When the cloth bag is pre-sprayed, both the air inlet and the air outlet of the box body 3 can be closed, and the spraying pipeline 9 and the box body 3 form circulation.

Specifically, the embodiment of the present invention provides a case 3 which is a rectangular case and has at least one pre-spraying nozzle on four sides. Specifically, the number of the pre-spray nozzles is four, and one pre-spray nozzle is provided at the middle of each side of the case 3.

In this embodiment, "first", "second", and "third" only have a distinguishing function, and have no other special meaning.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust treatment device for a boiler comprises an ash storehouse (1) and N bag-type dust collectors (2), wherein N is an integer greater than or equal to 2, each bag-type dust collector (2) comprises a box body (3), a pattern plate on the upper part in the box body (3), a plurality of cloth bags fixed on the lower side of the pattern plate in the box body (3) and an ash bucket (4) at the bottom of the box body (3), and the bottom of each ash bucket (4) is connected with the ash storehouse (1) through a pipeline with a storehouse pump (5); it is characterized in that only part of the bag type dust collector (2) works; at least one pre-spraying nozzle is arranged at the upper part in the box body (3) and below the pattern plate, and the pre-spraying nozzle is connected with the upper part or the middle part of the ash bucket (4) through a spraying pipeline (9) with a fan (6) and a first control valve (7); the outlet of each bin pump (5) is respectively output by N conveying pipelines, one conveying pipeline is output to the ash bin (1), the other N-1 conveying pipelines are respectively output to the upper parts of the ash hoppers (4) of the other N-1 bag-type dust collectors (2), and each conveying pipeline is provided with a second control valve (8); the dust in the ash bucket (4) of the working bag type dust collector (2) can be sent to the bag type dust collector (2) ready for starting to work to pre-spray the cloth bag.

2. A dust handling arrangement for a boiler according to claim 1, characterized in that the number of bag house (2) is three, three bag houses (2) constituting one or two.

3. A dust disposal device for boiler as defined in claim 1, wherein a visual window (10) is provided in the middle of said hopper (4) at a position satisfying the amount of said preliminary spraying.

4. The dust treatment device for the boiler according to claim 1, wherein an annular pipe (11) is arranged on the outer side of the upper part of the box body (3), the pre-spraying nozzle is connected with the annular pipe (11) through a communicating pipe, the annular pipe (11) is communicated with the spraying pipeline (9), and the communicating pipe penetrates through the box body (3) outwards and is fixedly connected with the box body (3) in a sealing way.

5. A dust handling arrangement for a boiler according to claim 1, characterized in that the box (3) is a rectangular box and is provided with at least one pre-spray nozzle on each of its four sides.