KR102454946B1 - dedusting System for exhaust gas - Google Patents

Abstract

Unlike a conventional winding type (roll type), a contaminant collection filter system according to the present invention has a simple structure, can be easily replaced for each filter and segment, has very high dust collection efficiency per unit area, has a negligible drop in pressure, is formed in a simple structure, and allows a filter to be continuously replaced automatically or manually while exhaust gas is purified during operation.

Description

Exhaust gas fine dust dust collector {dedusting System for exhaust gas}

The present invention relates to a device for purifying pollutants discharged through a chimney using a filter or a structural device, particularly by collecting dust, metal oxide (especially iron oxide), etc. contained in exhaust gas of thermal power generation or combined cycle power generation. It's about the removal device.

Waste gas is emitted from various facilities such as industrial facilities, power plants, and factories. The discharged waste gas contains an excessive amount of harmful particulate pollutants such as various kinds of dust and metal oxides. Accordingly, there is a need for an apparatus for purifying pollutants in order to prevent environmental pollution and provide a more comfortable environment.

There are two main types of pollutant purification devices: a cyclone method and a filter method.

The cyclone method has Korean registration Nos. 20-0473001, 10-1855113, 10-1653393, 10-0312816, and the like. This method has the same structure as FIG. 1, and is semi-permanent because there are no consumables, Since rotational or centrifugal force must be applied to the exhaust gas, expensive equipment with a complex structure and an expensive rotary motor capable of precise pressure control are required. The disadvantage is that it is difficult to replace.

On the other hand, the filter method can conveniently and effectively treat pollutants in the exhaust gas, but has a disadvantage in that the filter must be replaced frequently.

As a structure for filter replacement, conventionally, Korean Registration Nos. 10-1922518, 10-1997691, 10-1665209, 10-1839829, 10-1648153, 10-1870328, and 10-1665028 No., No. 10-1886690, No. 10-1744227, No. 10-1668015, No. 10-1749076, No. 10-1478806, No. 10-1246190, No. 10-1390602, etc., as in FIG. 2 It is a method of replacing the contaminated filter by installing rollers on both sides and moving the filter by driving the roller. Similarly, this method has a complicated structure because rollers and motors are installed on both sides, but it is difficult to use at high pressure or high flow rate, the filter is easily damaged by heat and pressure, the dust collection efficiency is low, and the process stops due to frequent failures. The damage of the filter is not easy to check, and when the filter is broken, there is no supplementary means, and since a fairly long roll must be manufactured, the unit price is high, it is difficult to install in a narrow space, and the contact area of the filter (non-woven fabric) per unit area is small , the use cycle is short, so the process for replacing the filter is frequently interrupted. There are downsides that don't exist.

In addition, as in FIG. 3 , there is a method of filtering the entire exhaust pipe by varying the height of each floor. In this method, a part of the stack (exhaust gas passage) is inevitably opened when the filter is replaced, and the exhaust gas is discharged as it is without being filtered There is a disadvantage in that it is difficult to replace the filter during operation due to the high exhaust temperature.

In addition, there are hybrid systems that simultaneously use centrifugal force and filters, such as Korean Registration Nos. 10-1653393, 10-1855113, and 10-1891510, and Korean Registration Nos. 10-2060441, 10-2287684, and Korean Publication There are Utility No. 20-2020-0000584, Korean Patent Publication No. 10-1999-0061860, etc., all of which do not stop the process and are not a method of easily replacing the filter, so it is very difficult to replace the filter, It costs a lot of money, and in most cases, inevitably, it is necessary to stop the operation to replace the filter.

In particular, in the case of the dust collector interposed between the stack of the exhaust heat recovery boiler as shown in FIG. 4 and the heat recovery equipment, there are a horizontal type and a vertical type. Inevitably, some filters are removed or the exhaust is piped, and the filter is installed and operated only during installation inspection or inspection, and the filter is removed and operated during actual operation. problems often arise.

On the other hand, in the case of Korean Registration No. 10-2084953, which is the previous application of the present applicant, the filter member of a small unit, which can be entered and exited freely in a sliding manner, is connected in a prefabricated manner, and the structure is simple, but it has excellent durability and dust collection efficiency. It is not suitable for a large stack or vertical type, and has the disadvantage of having to be replaced manually.

Accordingly, by improving the conventional dust collector, the filter can be easily replaced without stopping the operation, and the filter can be replaced automatically according to the contamination of the filter, the installation and operation cost is low, and the dust collection efficiency is high need to develop

Korean Registration No. 20-0473001 Korean Registration No. 10-1855113 Korean Registration No. 10-1653393 Korea Registration No. 10-0312816 Korean Registration No. 10-1922518 Korean Registration No. 10-1997691 Korean Registration No. 10-1665209 Korean Registration No. 10-1839829 Korean Registration No. 10-1648153 Korean Registration No. 10-1870328 Korea Registration No. 10-1665028 Korean Registration No. 10-1886690 Korean Registration No. 10-1744227 Korea Registration No. 10-1668015 Korean Registration No. 10-1749076 Korean Registration No. 10-1478806 Korea Registration No. 10-1246190 Korean Registration No. 10-1390602 Korean Utility Model Publication No. 1999-012000 Korean Registration No. 10-1891510 Korean Registration No. 10-2060441 Korean Registration No. 10-2287684 Korean Public Room No. 20-2020-0000584 Korean Patent Publication No. 10-199-0061860 Korean Registration No. 10-2084953

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The present invention, which was devised to improve the problems of the existing roller filter method or the drawn replacement filter method for each segment, has a simple structure, can be easily replaced, has low installation and operation costs, and can be easily replaced during operation. , to provide a new type of dust collection system with improved dust collection efficiency.

In order to solve this technical problem, the present invention has a filter supply unit, a first opening/closing unit, a filter filling unit, a second opening/closing unit, and optionally a third opening/closing unit, and has a first conveying unit and a second conveying unit in the filter filling unit, By enabling automatic or semi-automatic filter replacement during operation as well as during operation, it has a simple structure, excellent durability and dust collection efficiency, and is particularly useful for both vertical and horizontal dust collectors.

A first feature of the present invention is that it has a filter supply unit, a first opening/closing unit, a filter filling unit, a second opening/closing unit, and optionally a third opening/closing unit, so that the filter can be easily replaced automatically or semi-automatically during operation as well as during a stop.

A second feature of the present invention is that the filter filling unit has a first conveying unit and a second conveying unit, so that they work organically to enable automatic or semi-automatic filter replacement during operation as well as during stoppage.

A third feature of the present invention is that the structure and shape of the first transfer part and the second transfer part have a unique structure, so that the filter can be easily supported at a desired position, and the discharge is easy.

The filter supply unit of the present invention is installed on one side of the dust collector, the exhaust gas flows in the horizontal direction, and in the case of a vertical dust collector in which the filter is vertically disposed, it is installed at the upper or lower part, the exhaust gas flows in the vertical direction, and the filter In the case of a horizontal dust collector in which is horizontally arranged, it is installed on the left or right side.

The filter supply unit is provided with a filter filling box and a stationary pressing means added to one side thereof, and when automatically inserting a filter, the filter filling box is provided with additional first and second sliding pressing means, and manually A cover is provided when a filter is inserted. Only one filter filling box for automatic filter supply and one cover for manual filter supply can be installed, but both can be installed. If both are installed, it is normally operated automatically, but it can be operated manually only when necessary, so both the advantages of the automatic type and the manual type can be utilized.

In the case of the automatic type, the first sliding pressing means (piston, etc.) pressurizes the plurality of filters filled in the filter filling box, and the filters are put into the first spare space one by one toward the filling part, and the filters put into the first spare space In order to prevent the filter from being easily inserted into the filling part because it is not parallel to the filling part, the stationary pressing means presses one side of the filter so that the filter in the first preliminary space is aligned with the filter in the filling part in a straight line. This stationary pressing means can be set to operate automatically or manually even when the filter is manually filled in the cover.

After that, the first opening and closing part is opened, and the filter is put into the filter filling part. In the case of a vertical type and a filter supply part formed on the upper part, the filter may be input by gravity, but in this case, of course, including other cases, the filter is more A second sliding pressurizing means installed on one side of the filter filling box and in parallel with the filter filling part may apply pressure to insert the filter into the filter filling part so that the filter can be introduced smoothly.

The filters introduced into the filter filling unit are sequentially introduced into the filter filling unit one by one by the transfer means of the first conveying unit. Taking the vertical type in which the upper filter supply unit is formed as an example, the first conveying unit includes a speed reducer, and the second unit connected by a chain or a wire thereto. 1 While supporting the filter, the supporting member slowly moves toward the discharge part of the filter filling part one by one. When the first supporting member of the first transfer unit reaches the lower end or the end of the filter filling unit, it does not move any more at a certain height and is fixed to maintain its supporting force, or it is moved further and folded, thereby losing its supporting power to the filter.

When the sequential filling is completed and the first opening/closing part is closed, the filter of the filter filling part performs a purification action. The number of filters in one row filled in the filter filling unit is usually about 10 to 60, and is usually filled to a height of about 20 m. If the weight of one filter is about 1.3 kg, when 50 filters are filled, the load received by the filter filling part in one row is at least 65 kgf, and since frictional force exists during transport, the instantaneous load can be about twice as high, Each member of the device, particularly the first and second support members, is designed to have a thickness, strength and structure to withstand them. In particular, when the first and second supporting members have a L-shape or a L-shaped structure, and a shape and structure that withstands a high load, such as a C-shape or a S-shape, it is advantageous to withstand the load.

When operating after filter filling is complete, pressure sensing means are installed on both sides of the filter filling part, monitoring the pressure or flow rate drop (differential pressure) on both sides of the filter filling part and transmitting the result to the control unit installed outside the dust collector, and the differential pressure When this level exceeds a certain level, the control unit intervenes to automatically replace the filter, or transmits a signal that can be detected by a human to manually perform the filter replacement.

When replacing a filter for a quick filter change operation during a facility stop, all the filter discharge operations are performed first, all filters can be put in, and the filter discharge operation and the filter input operation can be performed one by one. When the filter discharge operation is performed all at once, the filter adjacent to the filter at the end to be discharged is supported and fixed by the pressure support means installed on the upper part of the second transfer unit, and then descends. of the first supporting member is folded to lose support for the filter, and then, as it is further transported, it continues to descend with the supporting force of the second supporting member of the second transport unit, and then as the second opening and closing part is opened, the second supporting member It loses support when folded. Accordingly, the filter at the end to be discharged is discharged through the outlet of the second opening/closing unit, and then the second opening/closing unit is closed again, and a third opening/closing unit is additionally installed if necessary, so that the discharged filter is completely discharged through the third outlet do. The reason for the additional provision of the third outlet is to strengthen the sealing characteristics of the filter filling part by performing double opening and closing, and to discharge the filter safely and easily by performing the filter discharge in multiple stages.

Then, while the second supporting member in the second transfer unit rises again, it reaches the vicinity of the pressure supporting means. After that, when the pressure is released from the pressure support means and the support force is lost, a moving pressure is applied to the filter by its own weight or the second sliding pressure means, and accordingly, while receiving the support of the second support member of the second transfer unit, the filter When the second support member is moved to a certain extent and the filter to be additionally discharged completely escapes the pressure support means, the pressure support means again applies pressure to the next filter to support and fix it.

Then, as before, the second supporting member is lowered and folded to lose support, and the second opening/closing part is opened, thereby further discharging the filter. If this discharge operation is continuously repeated, eventually all the filters of the filter filling part are discharged. After that, when the process of supplying filters to the filter filling unit is performed again as in the first time, the process of replacing all filters at once is completely performed.

The first to third opening/closing units may additionally include a separate bypass pipe to control the internal pressure within a predetermined range.

On the other hand, the method of replacing filters one by one due to filter differential pressure, etc. is mainly used when replacing filters during facility operation. After removing one filter from the second opening/closing unit or the third opening/closing unit, the pressure of the pressure supporting means is released to release the pressure of the second transfer unit. When the filter is moved using the second supporting member of Accordingly, a space in which one filter can be filled is formed in the filter filling unit on the filter supply side. The filter supply unit supplies the filter and opens the first opening/closing unit to supply an additional filter.

Thereafter, at the other end, the pressure is released from the pressure support means, and the process of additionally removing the filter from the second opening/closing unit using a second supporting member or the like is repeated. Filters can be sequentially replaced one by one while repeating one discharge, moving the filter module one by one from the filter filling unit, and supplying one additional filter from the filter supply unit. Although this process can be performed while the operation is stopped, the first, second, and third opening and closing parts are provided, so that exhaust gas does not leak into the filter supply part or the filter exhaust part, so it can be performed even during operation.

Auxiliary hoppers are installed at regular intervals in the filter filling part to collect falling metal oxides, and a large-capacity main hopper is installed at the bottom. By opening the heavy valve, the metal oxide inside can be easily removed or discharged.

Unlike the conventional winding type (roll type), the contaminant dust collector according to the present invention has a simple structure and can be easily replaced for each filter and segment, so whether it is a vertical type or a horizontal type, the heat recovery steam generator (Heat Recovery Steam Generator) ) can be installed in a narrow space of low differential pressure, high temperature, and high efficiency, so it is economical and inexpensive, and the filter replacement time is extended due to the large amount of collection, and both automatic and manual operation are possible. In particular, there is an advantage that the filter can be changed automatically.

The biggest advantage is that the contaminated filter can be exchanged during operation. In addition, it can be installed with a width of about 100mm or more, so there is no restriction on the installation space, the structure is simple, and the area of the filter frame is small, so the waste gas inside the heat recovery boiler is reduced. Of the moving internal area, the dust collection area occupied by the dust collection facility is about 85%, which maximizes the movement of waste gas and minimizes the pressure loss due to the resistance. The contact area is expanded up to %, and in the case of the conventional adhesive nonwoven roller system, the installation area of the filter unit is about 50 to 60% of the internal area of the heat recovery boiler, and the filter area is also about 50-60% due to the auxiliary devices such as rails Since it is about 70%, the ratio of the final contact area of the exhaust gas with the filter to the final dust collection area is only about 40% (60%x70%=42%), whereas in the system of the present invention, the filter area is about the same as the dust collection area. 85% and the contact area is about 400% of the filter area, so the ratio of the final contact area where the exhaust gas contacts the filter to the final dust collection area is about 340% (85%x400%=340%), which is very high. In addition, remote control and monitoring operation is possible in the field or in the control room. Using a glass fiber filter, the filter has excellent performance due to high temperature and acid/alkali resistance. It protects and reinforces the filter so that the filter is not damaged even by wind pressure and large impact. When the filter is dirty, it can be reused several times after cleaning, so the maintenance cost is low. Below, it is very small, so the gas turbine output drop is relatively small.

1 shows a conventional cyclone scheme.
2 shows a conventional roller filter method.
3 shows a conventional filter method.
4 shows the structure of a conventional exhaust heat recovery boiler, where the dust collector is added.
5 is a perspective view showing one embodiment of the dust collector and the stack according to the present invention, such as front and side surfaces.
6 schematically shows one embodiment of a dust collector for manually feeding a filter.
7 schematically shows one embodiment of a dust collector for automatically supplying a filter.
8 is an embodiment showing the first transfer unit, the second transfer unit, the second opening/closing unit, and the third opening/closing unit formed on the side or the lower side of the filter filling unit.
9 shows an embodiment in which the filter is discharged from one side of the filter filling part.
10 is an embodiment showing the detailed structure and operating principle of the first transfer unit and the second transfer unit.
11, 12, and 13 are one embodiment showing the principle that the first supporting member of the first conveying unit and the second supporting member of the second conveying unit support the filter and the principle that the supporting force is lost by rotating at the bottom.
14 is an embodiment schematically showing a system in which a filter is discharged to a filter collection device through the second opening/closing unit, the third opening/closing unit, and the discharge plate at the lower end of the first conveying unit and the second conveying unit.
15 is an embodiment schematically showing a filter filling unit, a plurality of auxiliary hoppers installed in the middle thereof, and a main hopper installed at the bottom thereof.
16 is one embodiment showing a system for supplying a filter from the top and discharging it from the bottom.
17 is one embodiment showing a system for supplying a filter from the bottom and discharging it from the top.
18 is one embodiment showing the sequential operation of a system for supplying a filter from the bottom and discharging it from the top.
19 is one embodiment showing a container belt system that can be used when supplying or discharging a filter.

The present invention mainly relates to a dust collector (8) of a heat recovery steam generator (HRSG), which is mainly installed in an exhaust gas dust collector of a cogeneration facility using gas as a fuel.

As shown in FIG. 4 , the dust collector is installed vertically between the stack and the heat recovery device or installed horizontally inside the stack 9 in the process of exhausting the exhaust gas from the exhaust gas through the heat recovery device to the stack. to be.

Exhaust gas contains a large amount of metal oxides, particularly iron oxide, as well as fine dust. Conventionally, a cyclone method as shown in FIG. 1 or a roller type as shown in FIG. 2 was used to recover it. Also, there was a problem that the operation had to be stopped when replacing the filter, and it was not advantageous in terms of cost. In addition, there is a method of disposing the filter in the same manner as in FIG. 3 and replacing the filter at once after moving the filter to one side during replacement, but it is also difficult to replace during operation. There was a problem.

According to an embodiment of the present invention devised to solve this problem, a filter is vertically disposed as shown in FIG. 5 , and a filter supply unit is located on one side and a filter discharge unit is located on the other side thereof. The overall system of the dust collector according to the present invention is shown in FIG. 6 .

As shown in FIG. 6 , the filter supply unit 10 has a filter filling box 101 for storing the filter, the filter is filled therein, and the cover 104 is formed on the opposite side, so that the filter is manually removed When a problem occurs in the input or the filter filling box 101 or the stationary pressurizing means 105, it is possible to take action.

The filters filled in the filter filling box 101 are pressurized by the first sliding pressing means 102, and are introduced into the filter input space at the upper end of the first opening/closing unit one by one. At this time, the inserted filter does not stand in parallel with the filter filling part, so the input may not be smooth. do.

After that, the first opening/closing part is opened and the filter is put in. If the filter supply part is installed in the upper part in a vertical type, the filter may be lowered by its own weight, but the movement is not smooth or the filter is horizontally typed on one side. When the supply unit is installed or the filter supply unit is installed at the bottom in a vertical type, the second sliding pressing means 103 for administering the filter to the filter filling unit may be additionally installed.

The filter 70 introduced into one end of the filter filling part through the first opening/closing part 20 is caught at the end of the first transfer part connected to the reducer, and thus slowly moves to the opposite side of the filter filling part. Dozens of these filters are continuously introduced, and the first supporting member 302 formed at the end of the first conveying part supports the large load of the filter and slowly descends, and when the filter input is completed, the The first inputted filter is supported by the first supporting member 302 , the second supporting member 325 at the end of the second conveying unit, or both of these members.

Preferably, the second supporting member 325 at the end of the second conveying unit supports the filter, and the pressure supporting means 310 also supports the filter in parallel if necessary, and the first supporting member of the first conveying unit supports the filter. In an unsupported state, it descends to the lowermost end, and the long plate is caught by the locking member 304 of FIG. Thereafter, the first opening/closing part is closed.

If the operation continues and the filter is clogged, a pressure drop (differential pressure) occurs on both sides of the filter. Sensors that measure pressure (flow) are installed on both sides of the filter. will send a signal to The control unit receives the differential pressure signal, and sends a signal that can be detected by a human to automatically or manually proceed with filter replacement.

Filter replacement is carried out by discharging the filter first and then putting it back in in the same way as before. It is possible to discharge the filter at once and insert a new filter at once, but it is also possible to alternately discharge and put in one by one in succession. .

In discharging the filter, the second supporting member formed on one side of the guide 324 moves while supporting the filter. When it moves to a certain position, the upper pressure supporting means 310 then supports and fixes the filter and is no longer It prevents movement, and the second opening/closing part 50 is opened. Then, while the second support member continues to descend, when it reaches the bent portion 3221 formed at the lower end of the upper support guide 322, the second support member 325 is hinged by the weight of the filter as shown in FIGS. 12 and 13 . is rotated, and accordingly, as the second support member is folded as shown in FIG. 11, the filter moves to the upper end of the second opening/closing part. The second opening/closing unit may be opened before the filter to be discharged is introduced into the second conveying unit, or may be opened just before the filter is discharged to the second conveying unit.

Afterwards, when the filter is discharged through the outlet of the second opening/closing part, the second supporting member rises again, moves to the upper end of the second conveying part, and the pressure of the pressure supporting means 310 at the upper part is released, so that the next filter is installed. While moving to the second supporting member, the lower end thereof is supported by the second supporting member. After that, when descending, the same discharge operation as before proceeds again.

The filter discharged through the second opening/closing unit prevents exhaust gas from leaking out and may be discharged through the discharge plate 401 and the third opening/closing unit 60 that may be additionally installed to facilitate replacement work. . Due to this additional configuration, when the second opening/closing unit is closed, the third opening/closing unit is opened, the filter is discharged through the discharge plate, and then the second opening/closing unit is opened again with the third opening/closing unit closed, and the filter moves into the discharge plate Therefore, even if replacement is made during operation, hot exhaust gas does not escape to the outside, so it is safe, and filtering is not stopped even while the filter is being replaced.

When this replacement operation is completed, since the filter filling unit is emptied, the reducer is rewound in reverse, and the first supporting member 302 and the reduction guide 301 are raised again with a chain or wire connected to the reducer, and the first After moving it to the vicinity of the opening/closing part, and repeating the previous filter input procedure, the replacement of the new filter is completed.

If the filters are replaced during operation as above, the exhaust gas is not purified for some time after it is discharged all at once before being put back in, and the pollutants collected from other filters or accumulated pollutants are removed from the filter. Contaminants can be discharged into the chimney into the empty space. Due to this, if the filter differential pressure rises during operation, the contaminated filter should be automatically replaced with a new filter without removing the filter. After the discharge process, the upper input process and the discharge process can be repeated in units of filters. In this case, since the filters are replaced one by one in a state in which the new filter and the conventional filter are in close contact, the replacement operation proceeds while the exhaust gas is continuously purified during operation.

Specifically, the method of replacing one by one during operation is described. First, the pressure support means 310 applies pressure to fix the filter, and presses the pressure so that the upper filters do not come down. Thereafter, the second opening/closing unit 50 is opened, and the filter is discharged to the filter discharge unit through the outlet of the second opening/closing unit while the filter moves downward by the second conveying unit. Thereafter, the second opening/closing part is closed, and the filter is completely discharged to the outside as the third opening/closing part is opened.

After that, the third opening/closing part is closed again, and the second supporting member of the second conveying part rises and waits, and thereafter, the first sliding pressing means 102 presses the filter to insert the filter. When the stationary pressing means 105 pressurizes the filter to set the filter after inputting the filter, the first opening/closing part is opened, and when the pressure of the pressure support means is released and the first support member is lowered by a certain amount, the pressure support means 310 ) is applied again to support and fix the next filter. Thereafter, the new filter input from the upper part is put into the filter filling part through the input groove of the first opening/closing part by its own weight or by the second sliding pressing means 103 . After that, when the first opening/closing part 20 is closed, the replacement work cycle for one filter is completed. Thereafter, the second opening/closing part 50 is opened, and the above cycle is repeated.

Meanwhile, when the filter is supplied to the filter supply unit, in order to prevent exhaust gas from leaking to the outside, the filter supply unit may also be provided with a double opening and closing unit like the filter discharge unit. In this case, a supply plate (not shown) similar to the discharge plate 401 and an auxiliary opening/closing part (not shown) similar to the third opening/closing part may be installed at the lower end of the first opening/closing unit. Most preferably, two or more opening and closing parts are installed in both the supply part and the exhaust part, so that the exhaust gas which is hot, high pressure and harmful to the human body does not leak to the outside during filter supply, replacement, and exhaust operation.

Additionally, the filter filling unit can collect metal oxides that fall through the filter by adding an auxiliary hopper at a certain height (or interval), and a relatively large-capacity main hopper is installed at the bottom of the filter to collect a large amount of metal oxides. can

On the other hand, the device of the present invention is preferably installed in a vertical type, and among them, it is preferable to insert the filter from the upper part and discharge the filter from the lower part, but as shown in FIGS. 16 to 18, a means for pushing the filter up from the lower part is provided Thus, it is possible to put the filter in from the bottom and discharge the filter from the top.

A further embodiment of the present invention is that the replacement filter module is vertically disposed, and the direction of movement is horizontal during input and replacement of the filter, so that the first and second conveying parts are omitted, and instead of optionally the third opening and closing part is also omitted, the second A transfer means for transferring the filter from the first opening/closing unit to the second opening/closing unit may be provided on the first opening/closing unit side.

Another additional embodiment of the present invention is that the second opening/closing part, the third opening/closing part, and the second transfer part are omitted, and if the first opening/closing part is opened and the filter is supplied from the filter supply part, the first end connected to the reducer of the first transfer part The first filter is supported on the supporting member, and the filters are sequentially filled into the filter filling part one by one. When the filling is completed, the first opening/closing part is closed, and when replacing it, the first opening/closing part is opened, and the reducer is reversely wound to filter one by one. to be removed from the filter supply.

In addition, various methods such as a conveyor belt method as shown in FIG. 16 as well as an actuator, a piston, and the like, may be used as the first sliding pressing means.

The filter is excellent in high temperature and acid/alkali resistance, has high dust collection efficiency, and uses a glass fiber material with excellent filter differential pressure. Aluminum mesh is additionally installed in front and behind the glass fiber filter to reinforce wind pressure and impact. The discharged filter can be easily regenerated several times with an air gun, etc., so it is economical and waste generation can be suppressed by waste control. In addition, when the filter is formed in a zigzag type, the contact area of exhaust gas per unit area is increased several times to lower the differential pressure, and the effect of installing the filter over a large area is expressed, which is very efficient.

In such a device, filter replacement may partially depend on manual operation, but may be performed completely automatically by a program of the control unit, so that the device according to the present invention significantly reduces the risk of safety accidents and the like when replacing the filter.

The present invention is basically applicable to thermal power generation, particularly, exhaust gas dust collection field of exhaust gas recovery boiler, as long as it is related to dust collection such as dust, it can be used in any field.

1 duct
2 generator
3 steam turbine
4 super heater
5 Steam drum
6 evaporator
7 water pump
8 Dust Collector
9 stack
10 filter supply
101 Filter Filling Box
102 Pressing means for the first sliding
103 Second pressing means for sliding
104 cover
20 first opening and closing part
30 Filter filling part
300 first transfer unit
301 deceleration guide
302 first support member
303 hinge
304 locking member
305 cover
306 auxiliary hopper
307 Main Hopper
308 reducer
310 Pressure support means
320 second transfer unit
321 guide rod
322 upper support guide
323 lower support guide
324 guide
325 second support member
326 hinge
327 cover
3221 bend
3222 slope
3231 fold
80 piston

Claims (15)

In the exhaust gas collecting device,
A filter supply unit that automatically or manually supplies filters one by one,
A filter filling part in which a plurality of individual filters are adjacently filled,
a first opening/closing unit located between the filter supply unit and the filter filling unit and opened when the filter is inserted;
a second opening/closing unit installed between the filter filling unit and the filter discharging unit and opened when the filter is discharged;
a third opening/closing unit installed downstream of the filter discharge unit, connected to the second opening/closing unit through the discharge plate, and operated in reverse with the second opening/closing unit;
A first transfer unit for controlling transfer of the filter when the filter is inserted in the filter filling unit,
Pressure support means formed on the discharge side of the filter filling part and supporting and fixing the next filter of the filter to be discharged when the filter is discharged;
It is formed near or adjacent to the pressure support means, and includes a second transfer unit for transferring the filter to be discharged,
The second transfer unit includes a second support member for transferring while supporting the filter and an upper support guide for guiding it,
An exhaust gas dust collector that can continuously replace individual dust filters even during operation.
The method according to claim 1,
and the filter supply unit includes a first sliding pressurizing means for moving the newly supplied filter on the same line as the filter of the filter filling unit.
The method according to claim 1,
The filter supply unit exhaust gas dust collector, characterized in that it comprises a stationary pressurizing means.
The method according to claim 1,
The filter supply unit exhaust gas dust collector, characterized in that it further comprises a cover.
The method according to claim 1,
The filter supply unit exhaust gas dust collecting device, characterized in that it further comprises a second sliding pressing means for moving the supplied filter to the first opening and closing unit.
The method according to claim 1,
Exhaust gas dust collecting device, characterized in that the first opening/closing unit and the opening/closing unit operate oppositely, and further comprising an auxiliary opening/closing unit which is formed at a front end of the first opening/closing unit to control the flow of the newly supplied filter moving to the first opening/closing unit.
The method according to claim 1,
The first transfer unit is connected to the reducer and the exhaust gas dust collecting device, characterized in that it comprises a first support member for supporting and transferring one end of the filter.
8. The method of claim 7,
The first supporting member has a side surface that can support the filter, and is hinged to one end of the reduction guide, so that it is folded while contacting the locking member at a certain point during movement.
delete The method according to claim 1,
The side of the first supporting member has a shape that can support the filter, the bent part is hinged to one end of the guide, and the upper support guide has an inclined portion formed at the lower end, so that the first support member reaches the inclined portion when moving. Exhaust gas dust collector, characterized in that the hinge portion rotates, losing support for the filter.
The method according to claim 1,
A sensor unit for measuring wind pressure or air flow rate on both sides of the filter filling unit,
Receive the measured values of the sensor unit and calculate their differential pressure,
When the differential pressure is greater than or equal to a set value, the exhaust gas dust collector further comprises a control unit that emits a specific signal or automatically performs a filter replacement operation.
delete delete In the filter replacement method of an exhaust gas collecting device in which a plurality of individual filters are integrated,
(1) a step of supporting and fixing a filter adjacent to a filter to be discharged from among the filters filled in the filter filling unit 30 filled with a plurality of filters with the pressure support means 310
(2) opening the second opening/closing part 50 located at the discharge side end of the filter filling part 30
(3) discharging the contaminated filter to be discharged through the second opening/closing unit 50
(4) closing the second opening/closing part 50
(5) releasing the support fixing of the pressure support means 310, and transferring the filters in the filling part to the second opening and closing part 50 one by one.
(6) the step of supporting and fixing the newly transferred filter by the pressure support means 310
(7) opening the first opening/closing unit located at the inlet end of the filter filling unit and supplying a new, uncontaminated filter
(8) thereafter, repeating the steps after (2) until the contaminated filter is replaced with a new filter.
15. The method of claim 14,
Filter replacement method of an exhaust gas collecting device, characterized in that the following steps are additionally performed between steps (4) and (5)
(4-1) located downstream of the second opening/closing unit 50, opening the third opening/closing unit 60 so as to discharge the contaminated filter discharged through the second opening/closing unit and transferred to the discharge plate 401 step
(4-2) discharging the contaminated filter to be discharged through the third opening/closing unit 60

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