KR101573292B1 - Round Dust Collector - Google Patents

Abstract

The present invention relates to an integrated cylindrical dust collector which efficiently collects the dust in various harmful gases discharged from a general industrial site such as a waste incinerator, a cement manufacturing plant, and a still mill and discharges purified gases to the outside. The integrated cylindrical dust collect, which removes the dust from the gases discharged from the general industrial site, includes: a tubular duct drawing in polluted gases; a hopper unit which stores the duct therein while being mounted to the inner and lower part of the body; a filter unit which is arranged on top of the hopper unit to collect the dust; a gas flow unit which is arranged on the filter unit to induce the purified gases while providing a flow pressure for the gases; and an integrated stack is arranged on the gas flow unit to discharge the purified gases. The duct penetrates the center unit of the hopper unit from a side while having flow holes formed on the upper part at regular intervals. The filter unit includes filter rooms which are uniformly partitioned by partitions and include respective back filters therein.

Description

[0001] The present invention relates to an integrated cylindrical dust collecting apparatus,

The present invention relates to an integrated cylindrical dust collecting facility for efficiently collecting and treating various harmful gas dust discharged from a general industrial site such as a waste incinerator, a cement manufacturing factory, a steel mill, etc., and discharging the clean gas to the outside .

As is known, a conventional dust collecting facility collects and removes harmful components and dust contained in polluted air or waste gas generated in various industrial sites, and therefore, a facility for releasing 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 natural sedimentation. However, since it has a low efficiency, it is rarely used in a continuous incinerator. However, 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 separates the dust by passing the waste gas through the fabric filter. In the past, the corrosion due to the sulfur oxides (SOx) and the hydrogen chloride (HCl) (Dioxin) treatment has been increasingly used since it has been used almost exclusively in incinerators for garbage disposal. Recently, electric dust collecting facilities have been increasing the use of electric power by charging the dust by Corona discharge, Coulomb force), the dust collection 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, When the pressure loss is relatively large, on the order of 50 to 150 mmAq, and 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, a 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 span is shortened, The problem is that it causes air pollution because it is released.

In addition, since the bag filter device and the stack are constructed separately from each other, a considerable installation space is occupied and an additional mechanical device is required. Thus, 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 polluted gas generated by combustion, The present invention provides a single-piece cylindrical dust collecting apparatus capable of reducing the size of the dust collecting apparatus.

It is another object of the present invention to provide a dust bag which is capable of reducing the gas drift phenomenon by uniformly distributing gas inflow into the bag filter by buffering the gas flow during the flow of the polluted gas by applying the reverse bag, The present invention provides a single-piece cylindrical dust collecting apparatus capable of preventing a backwashing wear phenomenon caused by a backwash.

It is a further object of the present invention to provide a single-piece cylindrical dust collector capable of minimizing the number of mechanical devices required in conventional discharge equipment, .

According to an aspect of the present invention, there is provided an integrated cylindrical dust collecting apparatus for removing dust from a gas discharged from a waste incinerator or a steel mill, comprising: a tubular duct for introducing a polluted gas; A filtration unit disposed on the hopper section for collecting dust, a filter unit disposed on the filtration unit for introducing the clean gas and providing a flow pressure of the gas, And an integrated stack disposed on the gas distribution unit to discharge the clean gas. The tubular duct extends horizontally from the upper end of the hopper to the other end, And at the same time a cut-out portion is formed on the lower side so that the polluted gas can be guided And a slide gate and a rotary valve are respectively disposed on the outer surface of the hopper portion including a vibrator. The filtration unit includes a tubular inner side surface and an outer side surface, And a bag filter is densely installed in each of the filtration chambers. The gas distribution unit has a through-hole formed on the upper side of each of the filtration chambers, And the reverse air generated by the operation of the idle fan can be supplied into the respective filtration chambers through the horizontal pipe and the vertical pipe connected to each other via the connection pipe, , An outlet damper is provided, and a reverse damper is installed on the connecting pipe and the vertical pipe, respectively, And a measuring sensor is provided for forming a branch pipe so that clean gas flowing along the flow path can be discharged to the outside, and a pollution degree of the clean gas is confirmed on one side wall surface.

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Since the fan and the stack are integrally disposed at the central portion of the main body of the dust collecting facility, the present invention having the features described above can be installed with only about 30% of the installation area of the existing facility, There is an advantage.

In addition, since the outlet damper is closed at the time of pulsing (reverse air injection) applied to the filtration chamber, the dust removal efficiency is very high since it is not subjected to the resistance of the flow of the polluting gas introduced into the main body, Mechanical devices can be minimized, which can greatly reduce production and operating costs.

1 is a front view showing an overall configuration of an integrated cylindrical dust collector according to the present invention;
Fig. 2 is a sectional view excerpted from the main configuration of Fig. 1,
Figs. 3a and 3b are a schematic plan view and a partial enlarged view showing a partitioning state of the filtration unit,
4A and 4B are a schematic perspective view and a front view showing a single filtration room,
5 is a view schematically showing the flow of clean gas and the state of injection of reverse air.

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 to 5 are views for explaining an integrated cylindrical dust collecting apparatus according to the present invention. In the case of FIG. 1, since the total size of the equipment itself is more than approximately 20 to 30 m, curved and straight stairs (S1, S2) as well as the state where the handrail H is installed.

As shown in the respective figures, the present invention is characterized in that a tubular duct 110 into which polluted gas flows, an integral hopper section 120 for receiving the duct 110, A filtration unit 130 arranged at the upper end for collecting the dust, a gas circulation unit 140 for guiding purified gas purified through the filtration unit 130 or providing a flow pressure of the gas, And an integrated stack 150 for discharging the stack 150 to the outside.

The tubular duct 110 is for introducing various kinds of polluted gas discharged by the combustion process at the industrial site into the treatment facility. The remaining part of the tubular duct 110 passes through the central part of the hopper part 120, And at the upper end thereof, the flow holes 111 are arranged at regular intervals and the cut-off portion 112 is formed at the lower end thereof, so that the polluted gas can be circulated in the hopper portion 120.

The hopper unit 120 is disposed at a lower end of the main body 121 to receive the duct 110. A vibrator 122a for imparting vibration to both sides of the center of the outer side surface of the hopper unit 120, And 122b.

A common slide gate 123 and a rotary valve 124 are disposed at the lower end of the hopper part 120 to collect dust accumulated in the hopper part 120 in the collecting tank 125 by the worker W, It is possible to carry it out through the opening 126,

3A and 3B and FIGS. 4A and 4B, the filtration unit 130 includes an inner side surface 131a and an outer side surface 131b, and is evenly divided by the partition 132 between the inner side surface 131a and the outer side surface 131b. And a plurality of bag filters 135 are densely built in the upper end portion of each of the filtration chambers 133 so as to form a through hole 134 connected to the flow path 141, So that the dust can be collected from the polluted gas.

Although the filtration chambers 133 of the present invention are divided into sixteen, it is needless to say that the filtration chambers 133 can be appropriately adjusted according to the inflow amount of the polluted gas and the collection efficiency.

5, the gas circulation unit 140 includes a flow path 141 disposed corresponding to each of the filtration chambers 133 constituting the filtration unit 130 for guiding the clean gas And is configured to be able to supply the flow pressure of the gas by the operation of the idle fan 142, as well as to supply pulsing reverse air to the respective filtration chambers 133.

The air introduced by the ID fan 142 is supplied to the respective filtration chambers 133 through the horizontal pipe 144, the vertical pipe 145 and the flow passage 141 via the connection pipe 143 And an outlet damper 146a is installed in the flow path 141 and a reverse damper 146b is installed in the connection pipe 143 and the vertical pipe 145 to perform a normal pulsing function.

That is, when the pressure applied to the filtration chamber 133, that is, the dust is gradually accumulated in the bag filter 135, the sensor senses the pressure difference change in the filtration chamber 133 and exceeds the reference value, or a timer And may be arbitrarily set so that each of the filtering chambers 133 is performed individually or at a time.

The stack 150 is disposed integrally on the gas distribution unit 140 and installed to discharge clean gas flowing along the distribution channel 141 to the outside through the branch pipes 151a and 151b, The pollution degree of the clean gas and the like can be easily confirmed through the normal measurement sensor 152.

As shown in FIG. 2, the polluted gas discharged from a general industrial site flows into the tubular duct 110 as shown in FIG. 2. As a result, a part of the polluted gas flows into the respective filtration chambers 133 and some of them flow into the filtration chamber 133 while circulating around the duct 110 through the cut-out portion 112.

This is because the reverse damper 146b installed in the connecting pipe 143 or the vertical pipe 145 shown in Fig. 5 is closed and the outlet damper 146a provided in the flow passage 141 is opened A considerable pressure is applied to the duct 110, the hopper unit 120 and the filtration unit 130 itself as the idle fan 142 operates, thereby inducing the flow of the gas.

Accordingly, the polluted gas passes through the bag filter 135 in the filtration chamber 133, while dust having a relatively large specific gravity falls directly down to the lower end of the hopper part 120, while the dust having a small specific gravity falls into the filtration chamber 133 And is collected by the bag filter 135, which is densely packed.

The purified gas purified while passing through the filtration chamber 133 is divided into branch pipes 151a and 151b while moving along the flow passage 141 bounded by the through hole 134 at the upper end of the filtration chamber 133, (Not shown).

On the other hand, when the pressure in the filtration chamber 133 gradually increases due to the passage of time, the pulsing operation in the filtration chamber 133 is performed according to a sensor operation (not shown).

That is, in contrast to the above, the idle fan 142 is operated while the outlet damper 146a on the flow path 141 is closed by opening the reverse damper 146b provided in the connecting pipe 143 or the vertical pipe 145 A strong reverse air is supplied into each of the filtering chambers 133 through the connecting pipe 143, the horizontal pipe 144 and the vertical pipe 145 so that the normal pulsing operation is performed, It is possible to remove dust that has been collected in the dust collecting apparatus.

In the case of the hopper part 120, vibrations are applied according to the operation of the vibrators 122a and 122b, so that the dust accumulated on the inner inclined surface falls downward. When a considerable amount of dust is loaded, the slide gate 123 and the rotary valve The dust can be collected into the collecting tank 125 and taken out to the outside by a conventional apparatus such as a vacuum cleaner or the like.

As described above, according to the integrated cylindrical dust collector according to the present invention, since the fan and the stack are integrally disposed at the central portion of the main body constituting the dust collecting facility, they can be installed with a space of about 30% There are significant advantages in space utilization.

In addition, since the outlet damper is closed at the time of pulsing applied to the filtration chamber, the dust removal efficiency is very high since it is not subjected to the resistance against the flow of the pollution gas introduced into the main body, and the conveyor facility and the auxiliary machinery are minimized Thereby greatly reducing production and operating costs.

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 111:
112: cut-out portion 120: hopper portion
121: main body 122a, 122b: vibrator
123: slide gate 124: rotary valve
125: Collecting tank 126: Entrance
130: Filtration unit 131a: Inner side
131b: Outer side 132:
133: Filtration chamber 134: Through hole
135: bag filter 140: gas distribution unit
141: Distribution channel 142: ID Fan
143: connecting pipe 144: horizontal pipe
145: Vertical tube 146a: Outlet damper
146b: Reverse damper 150: Stack
151a, 151b: branch pipe 152: measuring sensor

Claims (5)

An integrated cylindrical dust collector for removing dust from pollutants discharged from a waste incinerator or a steel mill,
A hopper part 120 for receiving the duct and a lower part in the main body, a filtration unit 130 disposed on the hopper part for collecting dust, A gas distribution unit 140 disposed on the filtration unit for guiding the clean gas and providing a flow pressure of the gas and an integrated stack 150 disposed on the gas distribution unit for discharging the clean gas However,
The tubular duct 110 extends horizontally from one end of the hopper part 120 to the other end of the hopper part 120 and has a flow hole 111 formed on the upper side of the duct 110 at regular intervals And a cut-out portion 112 is formed on the lower side to guide the polluted gas,
A slide gate 123 and a rotary valve 124 are disposed on the outer surface of the hopper portion 120, including vibrators 122a and 122b,
The filtration unit 130 includes sixteen filtration chambers 133 that are formed by a tubular inner surface 131a and an outer surface 131b and are equally divided by partition walls 132 mounted between the inner and outer surfaces thereof And a bag filter 135 is closely packed in each of the filter chambers,
The gas circulation unit 140 has a through hole 134 formed in the upper side of each filtration chamber 133 and a flow passage 141 is mounted to allow the clean gas passing through the bag filter in the filtration chamber to be discharged to the outside through the stack 150 And the reverse air generated by the operation of the idle fan 142 can be supplied into the respective filtration chambers 133 via the horizontal pipe 144 and the vertical pipe 145 connected thereto via the connection pipe 143 An outlet damper 146a is installed in the flow path 141 and a reverse damper 146b is installed in the connection pipe 143 and the vertical pipe 145,
The stack 150 is provided with branch pipes 151a and 151b for discharging the clean gas flowing along the flow path 141 to the outside and a measurement sensor for checking the contamination degree of the clean gas on one side wall 152) are provided on the inner circumferential surface of the cylindrical cylindrical dust collecting apparatus. delete delete delete delete

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