KR20170060667A

KR20170060667A - Dust collector

Info

Publication number: KR20170060667A
Application number: KR1020150164983A
Authority: KR
Inventors: 박군수
Original assignee: 박군수
Priority date: 2015-11-24
Filing date: 2015-11-24
Publication date: 2017-06-02

Abstract

The present invention relates to a stack-type dust collecting apparatus for discharging clean gas to the outside after treating dust from various kinds of waste gas discharged from a general industrial site such as a waste incinerator, a cement manufacturing plant, a steel mill, and the like.
The present invention relates to an exhaust gas purification apparatus, which comprises a tubular duct for introducing waste gas, a main body for purifying the waste gas introduced through the duct, a discharge unit for guiding purified gas purified from the main body, The dust collecting apparatus according to claim 1, wherein the stack is vertically disposed in the main body. The main body includes a circulation room into which waste gas flows, a filtration chamber to filter out dust, and a stacking room for downwardly guiding and removing dust, The filtering chamber is partitioned by partition walls, and a bag filter is densely built in. The pulsating unit for supplying compressed air into the filtration chamber is disposed at the upper end of the main body. At the bottom of the main body, A scraping unit is disposed to remove accumulated dust.
With this configuration, it is possible to have a much smaller installation area than the conventional equipment, and it is possible to exhibit the improved function than the previous one with a comparatively simple configuration, thereby lowering the product price and greatly reducing the production and operation cost. It is possible to efficiently treat accumulated dust.

Description

Stack Integrated Dust Collector {DUST COLLECTOR}

The present invention relates to a stack-type dust collecting apparatus for discharging clean gas to the outside after treating dust from various kinds of waste gas discharged from a general industrial site such as a waste incinerator, a cement manufacturing factory, a steel mill, and the like.

As is known, a conventional dust collecting facility collects and removes harmful components or dust contained in contaminated air or waste gas generated in various industrial sites, and therefore, a facility for discharging only purified clean gas to the outside And can be divided into gravity type, washing type, filtration type, and electric type depending on the design specification and function.

The gravity type dust collecting facility is a method of separating dust by using a natural sedimentation method. However, since the efficiency is low, it is rarely used in a continuous incinerator. The waste gas is removed by contact with the droplet or the liquid film, and most of the water or the specific solution is used. Since the structure is relatively simple and easy to operate, the waste water treatment facility must be installed together, .

In addition, the filtration type dust collecting facility is a method of separating dust by passing a waste gas through a fabric filter. In the past, corrosion due to sulfur oxide (SOx), hydrogen chloride (HCl) (Dioxin) treatment has been increasingly used since it is rarely used in incinerators for garbage disposal. The electric dust collector is charged with dust by Corona discharge, and at the same time, the Coulomb force Coulomb force), the dust emission efficiency is improved to below 0.02g / Nm3 and the operation cost is considerably low.

In addition to the above-mentioned facilities, there is known a cyclone method in which the separation rate of dust and gas becomes larger as compared with the sedimentation due to the weight, as the acceleration of the waste gas containing dust is further increased by the centrifugal force, The pressure loss is relatively large, on the order of 50 to 150 mmAq, and when the dust particles contained in the waste gas are small or light, they are discharged as they are.

Meanwhile, a bag filter, which is widely applied to a filtration type dust collecting facility, is capable of collecting the various kinds of dust that have been separated in the box while filtering the fine dust through a filter so as to discharge purified air, The dust introduced through the dust chamber is configured to be partially adhered to the filter, and at the same time, collected in the dust box by the load, so that only the purified gas is discharged to the outside.

However, since the dust adheres to the inside of the bag filter, the gas flow is interrupted and the bag filter needs to be replaced frequently to perform the function. In addition to stopping the operation of the bag when replacing the bag filter, Which is not only costly but also occupies at least three to four times the installation area of the cyclone device.

Regarding such facilities, for example, domestic patent No. 0348516 discloses a method for simultaneously treating acid gas (HCl, SOx, HF, H ₂ S) and particulate pollutants contained in an incinerator exhaust gas, (SOx), hydrogen chloride (HCl), and the like, which are emitted from boiler combustion and post-incineration treatment processes of various industries, and a non-oxidizing material Can be removed at the same time.

Patent No. 0769667 discloses that an SCR catalyst tower for removing harmful substances such as NOx, SOx, HCl, dioxin, fly ash, and the like generated during operation of an incinerator is not separately formed in the incineration and combustion processing system Patent Document No. 0890803 discloses a technique for replacing the filter with a dust collecting device. Patent Document 0890803 discloses a washing device having a rotating means inside a bag cage and a dust removing means to remove dust adhering to the outer surface of the filter. A technique for preventing air pollution as well as prolonging filter life is disclosed.

However, in the conventional art as described above, the drift phenomenon is caused in the flow process of the waste gas, and the filter is torn or damaged due to the concentrated injection into a part of the filter. As a result, the life is shortened, The problem is that it causes air pollution because it is released.

In addition, since a bag filter device having a plurality of structures and a smoke trap are separately constructed, a considerable installation space is occupied and an additional mechanical device is required. Therefore, the overall maintenance cost is increased .

Korean Registered Patent No. 0348516 (Registered Jul. 30, 2002) Title of the invention: Exhaust gas treatment device in which a semi-cylindrical reactor and a bag filter are integrated. Korean Registered Patent No. 0623854 (Registered on Sep. 6, 2006) Name of invention: Integrated semi-automatic reactor and electric dust collector. Korean Registered Patent No. 0769667 (Registered on October 17, 2007) Name of invention: Batch processing system for exhaust gas in incineration and combustion furnace. Korean Registered Patent No. 0890803 (Registered Mar. 20, 2009) Title of invention: Rotary bag filter device of dust collector.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dust collecting apparatus for collecting and collecting waste gas generated by combustion and arranging a stack at a central portion thereof, The present invention provides a stack-integrated dust collecting facility.

Another object of the present invention is to reduce the load on the equipment itself by making it possible to perform the pulsing function in the divided filtration room and to make it relatively simple in comparison with the previous equipment, The present invention provides a stack-type dust collecting apparatus capable of exhibiting an effect.

It is another object of the present invention to provide a stack-type dust collecting apparatus capable of efficiently processing dust by combining a turntable function in a lower part of the main body.

According to an aspect of the present invention, there is provided a stack-type dust collecting apparatus for collecting and removing dust from waste gas discharged from an industrial site such as a waste incinerator or a steel mill, comprising: a tubular duct for introducing waste gas; A main body for purifying the waste gas introduced through the duct, a discharge unit for guiding the cleaned gas purified from the main body, and a stack vertically disposed at the center of the body connected to the discharge unit, A filtering chamber for filtering the dust, and a loading chamber for guiding and removing the dust downward are vertically and downwardly partitioned, and the inside of the filtering chamber is divided by a partition wall, And the upper end of the main body is provided with a perforated tube for providing compressed air into the filtration chamber, And a scraping unit for removing dust accumulated on the floor of the loading room is disposed at the lower end of the main body.

The pulsating unit may include a ring-shaped horizontal tube for supplying compressed air generated by the operation of the blowing fan, and a vertical tube connected to a connection hole of the filtering chamber, And a damper for opening and closing the flow hole.

The scraping unit is composed of a motor, a movable shaft and a turntable which are rotated by the operation of the motor, and a fixing plate for scraping off dust accumulated on the bottom of the loading room connected to the connecting piece mounted on the lower portion of the turntable .

In addition, a chute for discharging dust to the outside is provided on one side of the bottom of the loading room.

In the present invention having the above-described characteristics, the integrated stack is disposed at the central portion of the main body of the dust collecting facility, so that the clean air can be discharged to the outside. Therefore, It is advantageous.

In addition, since the damper installed to open and close the respective filtering chambers does not receive the resistance due to the gas flow during the pulsing operation, it is possible to increase the dust removal efficiency, and the function can be further improved by the relatively simple structure It can lower the price of the product and can greatly reduce production and operation costs.

In addition, since the turntable function is incorporated in the lower part of the main body, the dust can be more effectively processed at the bottom of the main body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic view showing a stack-type dust collector according to the present invention;
FIG. 2 is a diagram showing the internal configuration of FIG. 1,
3 is a diagram schematically showing flows of waste gas and clean gas,
Figures 4a and 4b are enlarged views of a plane and a portion of a filtration chamber,
Figure 5 is a partial perspective view, excerpted from a single configuration of the filtration chamber,
6 is a diagram showing the configuration of the pulsing unit,
7 is a view showing a configuration of a cylinder and a damper,
8 is a view showing the construction of the scraping unit.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. These specific structures and functions are merely examples of the present invention, and thus the present invention is not limited to the embodiments described herein.

1 through 8 are views for explaining a stack-type dust collecting apparatus according to the present invention. As shown in these drawings, the present invention includes a cylindrical duct 110 into which waste gas flows, A main body 120 for purifying the waste gas introduced into the duct 110, a discharge unit 130 for guiding purified gas purified in the main body 120, And an integrated stack 140 for discharging the clean gas to the outside.

1 to 3, since the total height of the dust collecting apparatus itself is approximately 20 to 30 m and the peripheral diameter is close to 7 m, a parapet H must be provided between the outer layers of the respective facilities, and curved or straight stairs (S1, S2) are installed so that the manager W can walk for facility inspection and maintenance.

In the case of the tubular duct 110, a waste gas generated by the pre-processing of a reaction tower or a combustion facility (not shown) flows and flows into the main body 120, So that dust can be removed and clean purified gas can be discharged.

That is, the main body 120 includes a circulation room 121 through which the waste gas flowing through the tubular duct 110 is rotated, a filtration chamber 122 for collecting the dust, And is divided into upper and lower three-tiered structures by a room 123.

5A and 5B, the filtration chamber 122 is partitioned by a partition wall 124a. In each filtration chamber 122, a plurality of tubular bag filters 125 are closely packed and built in. A connection hole 126a is formed at one end of each filtration chamber 122, and a flow hole 126b is formed at one side of the side surface.

The filtration chamber 122 may be suitably divided into eight to sixteen depending on the capacity of the waste gas to be treated.

The waste gas flows into the circulation room 121 provided at the upper end of the main body 120 through the duct 110 at the upper end of the main body 120 and at the same time the dust passes through the respective filtration chambers 122, (125) or dropped to the bottom of the loading room (123) by its own weight.

The exhaust unit 130 has an exhaust passage 131 formed between the filtration chamber 122 and the stack 140 and connected to the flow hole 126b of the filtration chamber 122, 131 and the outlet pipe 132b are sequentially connected to the front end of the stack 140. A purified gas including waste gas is supplied to the stack 140 between the inlet pipe 131a and the outlet pipe 131b, And a suction fan 133 for guiding the refrigerant to the suction side.

The waste gas flowing into the circulation room 121 from the tubular duct 110 is purified while passing through the bag filter 125 mounted in each filtration chamber 122 and then discharged through the discharge unit 130 and the stack 140), only the clean gas is discharged to the outside.

A pulsing unit 150 is provided on the outer side of the upper end of the main body 120 to intermittently supply strong compressed air toward the filtering chamber 122 in the main body 120, The function of the bag filter 125 can be maintained.

6 and 7, the pulsating unit 150 supplies the compressed air generated by the operation of the blowing fan 151 through the ring-shaped horizontal pipe 152, And a vertical pipe 153 connected to the connection hole 126a and a damper 155 for vertically expanding and contracting by the operation of the cylinder 154 is installed on the inner side of the upper end of the main body 120, The pulsing operation can be performed by opening / closing the flow hole 126b formed at the upper end of the chamber 122.

In the case of the pulsing unit 150, the pressure applied to the filtration chamber 122 in the main body 120, that is, the pressure change due to the accumulation of dust, is sensed and reaches a predetermined value, or a timer, Is opened at a predetermined cycle to inject compressed air.

A scrapping unit 160 is disposed at the lower end of the main body 120 so that the dust collected at the bottom of the loading room 123 can be collected and taken out through the respective filtering rooms 122 Consists of.

8, the scraping unit 160 includes a motor 161 and a drive shaft 162 and a turntable 163 that rotate in engagement with gears mounted on the shaft of the motor 161, And a fixing plate 165 connected to the connecting pieces 164a and 164b mounted on the lower portion of the base plate 163.

With this configuration, the dust accumulated on the floor of the loading room 123 can be scratched off as the fixing plate 164 rotates at the time of operating the motor 161, and the dust installed on one side of the loading room 123 The dust can be taken out to the outside through the chute 166.

3, various kinds of waste gas discharged from a general industrial site flows into the circulation room 121 of the main body 120 through the tubular duct 110, and the waste gas And flows into the bag filter 125 mounted in each of the filtration chambers 122 divided by the partition 124a.

At this time, the flow holes 126b formed in the respective filtration chambers 122 are kept open by the operation of the cylinders 154 and the dampers 155, while the inflow pipe 132a and the outflow pipes 132b The waste fan 133 is operated to generate a flow force of air so that the waste gas is discharged to the stack 140 via the circulation room 121, the filtration chamber 122, and the exhaust passage 131 And the operation is continuously performed.

This is because the dust having a relatively large specific gravity falls down directly to the bottom of the loading room 123 while the waste gas is passing through the bag filter 125 in the filtering room 122 while a conventional dust collecting function is performed, The small dust is collected by the bag filter 125, which is concentrated in each filtration chamber 122.

The purified gas purified while passing through the filtration chamber 122 flows downward along the exhaust path 131 through the flow hole 126b and flows through the inlet pipe 132a and the outlet pipe 132b and the stack 140 It can be released to the outside.

Meanwhile, when the pressure gradually increases to reach the set value while the dust is continuously attached to the bag filter 125 in the filtration chamber 122 due to the elapse of time, the pressure in each filtration chamber 122, A normal pulsing operation is performed.

That is, when the blower fan 151 is operated in a state in which the damper 155 closes the flow hole 126b of each filtration chamber 122 by the operation of the cylinder 154 constituting the pulsing unit 150, The compressed air is supplied into the respective filtration chambers 122 through the ring-shaped horizontal pipe 152 and the vertical pipe 153 to perform the intermittent pulsing operation. Thus, the dust collected in the bag filter 125 is temporarily So that it can be removed.

Accordingly, the dust is dropped toward the bottom of the loading room 123, and when a considerable amount of dust accumulates, the scraping unit 160 is operated.

In the case of the scraping unit 160, the movable shaft 162 and the turntable 163 engaged with the gear are rotated while the motor 161 is operated, and the fixed plate 165 mounted on the lower ends of the connecting pieces 164a and 164b, So that the dust accumulated on the bottom of the loading room 123 can be taken out through the chute 166 to the outside.

As described above, according to the stack-type dust collector according to the present invention, since the integrated stack is disposed at the central portion of the main body constituting the dust collecting facility, clean air can be discharged to the outside, It is advantageous that the facility can be constructed only by the space.

In addition, since the damper installed to open and close the respective filtering chambers does not receive the resistance due to the gas flow during the pulsing operation, it is possible to increase the dust removal efficiency, and the function can be further improved by the relatively simple structure It can lower the price of the product and can significantly reduce production and operation costs.

Furthermore, since the turntable function is incorporated in the lower part of the main body, the dust can be more efficiently processed at the bottom of the main body.

Although the present invention has been fully described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the present invention is not limited thereto. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

110: tubular duct 120: main body
121: circulation room 122: filtration room
123: loading room 124a: bulkhead
125: Bag filter 126a: Connection hole
126b: flow hole 130: exhaust unit
131: exhaust path 132a: inlet pipe
132b: Outflow pipe 133: Suction fan
140: Stack 150: Pulsing unit
151: blower fan 152: ring-shaped horizontal tube
153: Vertical tube 154: Cylinder
155: Damper 160: Scraping unit
161: motor 162: movable shaft
163: Turntable 164a, 164b: Connection
165: Fixing plate 165: Chute

Claims

A stack integrated type dust collecting apparatus for collecting and removing dust from waste gas discharged from an industrial site such as a waste incinerator or a steel mill,
A main body 120 for purifying the waste gas introduced through the duct, a discharge unit 130 for guiding the cleaned gas purified from the main body, And a stack 140 connected to the unit and vertically disposed at the center of the body,
The main body 120 includes a circulation chamber 121 through which waste gas flows, a filtration chamber 122 through which dust is filtered, and a loading chamber 123 through which the dust is guided downwardly, At the same time, the inside of the filtration chamber 122 is divided by the partition wall 124a, and the bag filter 125 is densely built in,
A pulsating unit 150 for supplying compressed air into the filtration chamber 122 is disposed at the upper end of the main body 120 and a dust accumulated on the bottom of the loading chamber 123 is removed from the lower end of the main body 120. [ Wherein a scraping unit (160) is disposed in the stack.

The apparatus of claim 1, wherein the pulsing unit (150) is connected to a ring-shaped horizontal pipe (152) for supplying compressed air generated by the operation of the blowing fan (151) And a damper 155 for opening and closing the flow hole 126b of the filtration chamber 122 while being operated in the vertical direction by the operation of the cylinder 154 including the straight pipe 153. [ Dust collection facility.

The scraping unit (160) according to claim 1, wherein the scraping unit (160) comprises a motor (161), a movable shaft (162) and a turntable (163) rotated by the operation of the motor, And a fixing plate (165) for continuously scraping dust accumulated on the bottom of the loading room (123).

The stack-type dust collector according to claim 3, wherein a chute (166) for discharging dust to the outside is provided at one side of the bottom of the stacking room (123).