CN204656191U - A kind of blowing is coated with bag-type dust collector - Google Patents
A kind of blowing is coated with bag-type dust collector Download PDFInfo
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- CN204656191U CN204656191U CN201520253387.1U CN201520253387U CN204656191U CN 204656191 U CN204656191 U CN 204656191U CN 201520253387 U CN201520253387 U CN 201520253387U CN 204656191 U CN204656191 U CN 204656191U
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- sack cleaner
- pipeline
- flue gas
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- spraying
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Abstract
The utility model discloses a kind of blowing and be coated with bag-type dust collector, it comprises: sack cleaner; It also comprises: intermediate bin, and its entrance is connected with the dust export of sack cleaner, malleation transfer pipeline, the outlet of itself and intermediate bin, and is connected with conveying fan, and described malleation transfer pipeline is provided with keying valve; Flue gas delivery pipe road, it is connected with the gas approach of described sack cleaner, and described flue gas delivery pipe road is provided with flue gas transfer valve; Pre-spraying pipeline, its one end is communicated with malleation transfer pipeline, and its other end is communicated with the pre-spraying mouth of sack cleaner, and described pre-spraying pipeline is provided with ash material transfer valve.Blowing described in the utility model is coated with bag-type dust collector, and it does not need outsourcing ash material, but utilizes the combustion by-products of unit to spray in advance as ash material, thus shortens the duration, reduces cost, decreases power consumption, and decrease the impact on environment.
Description
Technical field
The utility model relates to a kind of dust arrester, particularly relates to a kind of bag-type dust collector.
Background technology
According to new environmental requirement, boiler chimney can not over-emitting black exhaust.In order to adapt to new demand, in ignition of the boiler, unit starting process, need the sack cleaner that comes into operation.For preventing the filtrate of sack cleaner to be subject to oil pollution, extending the service life of sack cleaner, must spray in advance sack cleaner before ignition of the boiler, namely cover a grieshoch at the filter material surface of sack cleaner.In addition; when unit starting; flue gas contains a considerable amount of steam and other condensable gases; and the burning of fuel is also incomplete; the temperature of the filtrate of sack cleaner will lower than the dewpoint of steam at the beginning, therefore, when also not reaching stable operation temperature; the protection of pre-spraying to sack cleaner is very important, can prevent steam from causing the filter clogging of sack cleaner.
As shown in Figure 1, the pre-spraying method of the sack cleaner of current thermal power plant is all by outsourcing pulverized limestone, by transporting tank car 1 force feed of pulverized limestone to boiler flue 2, to be sent by boiler, filtrate 4 surface that pulverized limestone is coated in sack cleaner 3 by induced-draught fan equably in advance.The fully loaded ash material of a tank car 1 is greatly about about 10 tons, the spraying of a sack cleaner 3 can only be met, and the sack cleaner 3 of large thermal power plant is more than 6, the spray coating operations therefore completing whole sack cleaner 3 needs tank car 1 back and forth from ash material storehouse and on-the-spot round transport ash material.Utilize tank car 1 to transport ash material to carry out the method for pre-spraying long in time limit, cost is high, and power consumption is high, and has a certain impact to environment.
Utility model content
The purpose of this utility model is to provide a kind of blowing to be coated with bag-type dust collector, and it does not need outsourcing ash material, but utilizes the combustion by-products of unit to spray in advance as ash material, thus the reduction of erection time, reduce costs, reduce power consumption, and reduce the impact on environment.
To achieve these goals, the utility model provides a kind of blowing and is coated with bag-type dust collector, and it comprises: sack cleaner; It also comprises:
Intermediate bin, its entrance is connected with the dust export of sack cleaner,
Malleation transfer pipeline, the outlet of itself and intermediate bin, and be connected with conveying fan, described malleation transfer pipeline is provided with keying valve;
Flue gas delivery pipe road, it is connected with the gas approach of described sack cleaner, and described flue gas delivery pipe road is provided with flue gas transfer valve;
Pre-spraying pipeline, its one end is communicated with malleation transfer pipeline, and its other end is communicated with the pre-spraying mouth of sack cleaner, and described pre-spraying pipeline is provided with ash material transfer valve.
Blowing described in the utility model is coated with in bag-type dust collector, and the entrance and exit of described intermediate bin can open and close.Sack cleaner body is the feed bin of a negative pressure, therefore between itself and malleation transfer pipeline, arranges an intermediate bin, when intermediate bin charging, opens intermediate bin import, closes intermediate bin outlet; When middle warehouse discharging, close intermediate bin import, open intermediate bin outlet, can effectively the feed bin of negative pressure and malleation transfer pipeline be completely cut off like this, prevent the loss of conveying wind pressure.
Blowing described in the utility model is coated with bag-type dust collector to be had from spray pattern and dry ash take-back model two kinds of mode of operations.Before ignition of the boiler, open from spray pattern with protecting cloth bag dust collector; After spraying terminates, be switched to dry ash take-back model and also reclaimed with the dry ash in the discharge of filtering in unit starting process flue gas.Specifically, before ignition of the boiler, by closing the keying valve on malleation transfer pipeline and the flue gas transfer valve on flue gas delivery pipe road, and the ash material transfer valve opened on pre-spraying pipeline is opened from spray pattern, in this mode, intermediate bin must leave enough ash quantity, the dry ash in intermediate bin is used to replace outsourcing agstone, close intermediate bin entrance, open intermediate bin outlet, conveying fan is utilized to adopt the mode of strength malleation conveying, by malleation transfer pipeline with spray pipeline in advance, dry ash in intermediate bin is pushed back in sack cleaner by the pre-spraying mouth of sack cleaner the filtrate of sack cleaner is sprayed in advance, blocked by by oil pollution and steam to prevent the filtrate of sack cleaner, thus protecting cloth bag dust collector.After spraying terminates, by opening the keying valve on malleation transfer pipeline and the flue gas transfer valve on flue gas delivery pipe road, and the ash material transfer valve of cutting out on pre-spraying pipeline opens dry ash take-back model, in this mode, flue gas enters sack cleaner by the gas approach of sack cleaner, and the exhanst gas outlet from sack cleaner after the filtrate filtering dry ash of sack cleaner is discharged, sack cleaner carries out timing purging by arranging an impulse blowing device at an upper portion thereof to filtrate, thus is blown off by the dry ash be adsorbed on filtrate; Period carries out step: close intermediate bin outlet, open intermediate bin entrance, intermediate bin stores the dry ash fallen from the dust export of sack cleaner, when dry ash runs up to certain amount, close intermediate bin entrance, open intermediate bin outlet, utilize conveying fan to adopt the mode of strength malleation conveying, by malleation transfer pipeline, by the dry ash conveying in intermediate bin to storage and transport station; Repeat above-mentioned steps, also reclaimed with the dry ash in the discharge of filtering in unit starting process flue gas.It should be noted that dry ash take-back model need ensure there are the enough dry ash amounts from needed for spray pattern in intermediate bin switching back before spray pattern.
Blowing described in the utility model is coated with bag-type dust collector, and it does not need outsourcing ash material, but utilizes the combustion by-products of unit to spray in advance as ash material, thus shortens the duration, reduces cost, decreases power consumption, and decrease the impact on environment.
Further, in another kind of embodiment of the present utility model, described pre-spraying mouth and gas approach are set to same import, and the other end of described pre-spraying pipeline is connected on flue gas delivery pipe road.
Further, be coated with in bag-type dust collector in above-mentioned blowing, described ash material transfer valve is provided with two, and one of them is arranged near the tie point of pre-spraying pipeline and malleation transfer pipeline, and another one is arranged near the tie point on pre-spraying pipeline and flue gas delivery pipe road.
Further, be coated with in bag-type dust collector in blowing of the present utility model, between described intermediate bin and malleation transfer pipeline, be also connected with balance pipe.The effect of balance pipe is, balance intermediate bin pressure, prevents from forming negative pressure in dry ash conveying process.
Blowing described in the utility model is coated with bag-type dust collector, and it does not need outsourcing ash material, but utilizes the combustion by-products of unit to spray in advance as ash material, thus shorten the duration, reduce cost, decrease power consumption, and the impact decreased environment, specifically:
(1) efficiently utilize the combustion by-products of coal unit, save the cost of buying ash material;
(2) because the carrying capacity of tank car limits, completing pre-spraying needs tank car to transport ash material back and forth, and the vacuum phase that the utility model does not transport, substantially reduce the time of pre-spraying;
(3) need startup to send induced-draught fan and air preheater to coordinate time owing to spraying in advance, therefore the shortening of pre-spray time decreases the consumption of station service.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing bag-type dust collector under a kind of embodiment.
Fig. 2 is that blowing described in the utility model is coated with the structural representation of bag-type dust collector under a kind of embodiment.
Detailed description of the invention
Illustrate that being coated with bag-type dust collector with concrete embodiment to blowing described in the utility model is further explained explanation below in conjunction with accompanying drawing, but this explanation illustrates the improper restriction do not formed the technical solution of the utility model.
Fig. 2 illustrates blowing described in the utility model and is coated with the structure of bag-type dust collector under a kind of embodiment.
As shown in Figure 2, the blowing of present embodiment is coated with bag-type dust collector, and it comprises the sack cleaner 5 with gas approach D and exhanst gas outlet E, and its top has impulse blowing device 51, and its inside has filtrate 52; Intermediate bin 6, its entrance A is connected with the dust export C of sack cleaner by entrance door 61, malleation transfer pipeline 7, and it is communicated with by outlet portal 62 with the outlet B of intermediate bin 6, and is connected with conveying fan 8, and malleation transfer pipeline 7 is provided with and opens and closes valve 9; Flue gas delivery pipe road 10, it is connected with the gas approach D of sack cleaner 5, and flue gas delivery pipe road 10 is provided with flue gas transfer valve 11; Pre-spraying pipeline 12, its one end is communicated with malleation transfer pipeline 7, its other end is connected on flue gas delivery pipe road 10, thus be communicated with as the gas approach D spraying mouth in advance with while sack cleaner 5, pre-spraying pipeline 12 is provided with the first ash material transfer valve 13 near the tie point being arranged on pre-spraying pipeline 12 and malleation transfer pipeline 7, and is arranged on the second ash material transfer valve 14 near the pre-tie point spraying pipeline 12 and flue gas delivery pipe road 10; Balance pipe 15 is connected with between intermediate bin 6 and malleation transfer pipeline 7.
Please continue to refer to Fig. 2.In the present embodiment, the entrance A of intermediate bin 6 is opened and closed by entrance door 61, and the outlet B of intermediate bin 6 is opened and closed by outlet portal 62.The blowing of the present embodiment is coated with bag-type dust collector to be had from spray pattern and dry ash take-back model two kinds of mode of operations.Before ignition of the boiler, by closing the keying valve 9 on malleation transfer pipeline 7 and the flue gas transfer valve 11 on flue gas delivery pipe road 10, and the first ash material transfer valve 13 opened on pre-spraying pipeline 12 and the second ash material transfer valve 14 are opened from spray pattern, in this mode, intermediate bin 6 must leave enough ash quantity, the dry ash in intermediate bin 6 is used to replace outsourcing agstone, close intermediate bin 6 entrance A, open intermediate bin 6 and export B, the mode utilizing conveying fan 8 to adopt strength malleation to carry, by malleation transfer pipeline 7 and pre-spraying pipeline 12, dry ash in intermediate bin 6 is sprayed the filtrate 52 of sack cleaner 5 in advance by pushing back in sack cleaner 5 as the gas approach D spraying mouth in advance of sack cleaner 5, blocked by by oil pollution and steam to prevent the filtrate 52 of sack cleaner 5, thus protecting cloth bag dust collector 5.After spraying terminates, by opening the keying valve 9 on malleation transfer pipeline 7 and the flue gas transfer valve 11 on flue gas delivery pipe road 10, and dry ash take-back model opened by the first ash material transfer valve 13 of closing on pre-spraying pipeline 12 and the second ash material transfer valve 14, in this mode, the flue gas containing a large amount of dry ash that boiler coal-ash is formed after hearth combustion is after horizontal flue and back-end ductwork, sack cleaner 5 is entered by the gas approach D of sack cleaner 5, and the exhanst gas outlet E from sack cleaner 5 after the filtrate 52 filtering dry ash of sack cleaner 5 discharges, sack cleaner 5 carries out timing by impulse blowing device 51 pairs of filtrates 52 on its top and purges, thus the dry ash be adsorbed on filtrate 52 is blown off, period carries out step: close intermediate bin 6 and export B, open intermediate bin 6 entrance A, intermediate bin 6 stores the dry ash fallen from the dust export C of sack cleaner 5, when dry ash runs up to certain amount, close intermediate bin 6 entrance A, open middle 6 storehouses outlet B, the mode utilizing conveying fan 8 to adopt strength malleation to carry, by malleation transfer pipeline 7, by the dry ash conveying in intermediate bin 6 to storage and transport station, repeat above-mentioned steps, also reclaimed with the dry ash in the discharge of filtering in unit starting process flue gas.It should be noted that dry ash take-back model need ensure there are the enough dry ash amounts from needed for spray pattern in intermediate bin 6 switching back before spray pattern.
The blowing of the present embodiment is coated with bag-type dust collector, it uses the ash material in middle ash silo to replace outsourcing agstone, do not need outsourcing ash material, the combustion by-products of unit is utilized to spray in advance as ash material, thus shorten the duration, reduce cost, decrease power consumption, and decrease the impact on environment.
It should be noted that; the above-mentioned explanation of disclosed embodiment makes professional and technical personnel in the field can carry out multiple types like change and amendment for the present embodiment apparently; this similar change is that those skilled in the art directly can draw or be easy to all distortion of just associating from content disclosed in the utility model, all should belong to protection domain of the present utility model.Therefore the utility model can not be subject to the restriction of this embodiment.
Claims (4)
1. blowing is coated with a bag-type dust collector, and it comprises: sack cleaner; It is characterized in that, also comprise:
Intermediate bin, its entrance is connected with the dust export of sack cleaner,
Malleation transfer pipeline, the outlet of itself and intermediate bin, and be connected with conveying fan, described malleation transfer pipeline is provided with keying valve;
Flue gas delivery pipe road, it is connected with the gas approach of described sack cleaner, and described flue gas delivery pipe road is provided with flue gas transfer valve;
Pre-spraying pipeline, its one end is communicated with malleation transfer pipeline, and its other end is communicated with the pre-spraying mouth of sack cleaner, and described pre-spraying pipeline is provided with ash material transfer valve.
2. blowing as claimed in claim 1 is coated with bag-type dust collector, and it is characterized in that: described pre-spraying mouth and gas approach are set to same import, the other end of described pre-spraying pipeline is connected on flue gas delivery pipe road.
3. blowing as claimed in claim 2 is coated with bag-type dust collector, it is characterized in that: described ash material transfer valve is provided with two, one of them is arranged near the tie point of pre-spraying pipeline and malleation transfer pipeline, and another one is arranged near the tie point on pre-spraying pipeline and flue gas delivery pipe road.
4. blowing as claimed in claim 1 is coated with bag-type dust collector, it is characterized in that, is also connected with balance pipe between described intermediate bin and malleation transfer pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520253387.1U CN204656191U (en) | 2015-04-21 | 2015-04-21 | A kind of blowing is coated with bag-type dust collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520253387.1U CN204656191U (en) | 2015-04-21 | 2015-04-21 | A kind of blowing is coated with bag-type dust collector |
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| CN204656191U true CN204656191U (en) | 2015-09-23 |
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| CN201520253387.1U Active CN204656191U (en) | 2015-04-21 | 2015-04-21 | A kind of blowing is coated with bag-type dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224660A (en) * | 2018-10-10 | 2019-01-18 | 华南理工大学 | A kind of electrostatic fabric filter ash precoating device and its working method |
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2015
- 2015-04-21 CN CN201520253387.1U patent/CN204656191U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224660A (en) * | 2018-10-10 | 2019-01-18 | 华南理工大学 | A kind of electrostatic fabric filter ash precoating device and its working method |
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