JP2531343Y2 - Dust removal device - Google Patents

Description

[Detailed description of the invention]

[0001]

[0001]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device for removing dust and impurities such as particles and fine particles in exhaust gas discharged from an incinerator and a combustion furnace, and particles in the air and fine particles in a factory or the like. .

[0003]

[0002]

[0004]

2. Description of the Related Art Conventionally, as a device for separating dust and impurities such as particles and fine particles in exhaust gas and air, a device for washing impurities by removing water by spraying water from a nozzle onto a gas containing impurities and containing impurities. Dust and impurities are filtered by passing the gas through a filter, and the gas, dust and impurities are separated by a device such as a cyclone that separates the gas and dust and impurities using the inertia of the dust and impurities. There are devices, such as a device that causes dust and impurities to collide with a collision plate to eliminate the kinetic energy of the dust and impurities and drop.

[0005]

[0003]

[0006]

In the above-mentioned conventional apparatus for separating solid and gas, the apparatus for separating impurities in a gas by spraying requires a complicated spraying apparatus and high manufacturing cost. In the case where impurities in gas are filtered by a filter, energy loss is large due to a large air resistance due to the filter while the gas is flowing down, which requires a large operating cost, and the filter is quickly clogged. Time is also shorter. The cost of equipment that separates impurities in gas by cyclone is high due to the cylindrical shape of the equipment, which increases the production cost, and requires a powerful blower that blows dust-containing gas into the cyclone to increase the separation efficiency. Bulging. Further, when the high temperature exhaust gas is subjected to the separation treatment, there is a problem that the gas is discharged at a high temperature due to the high temperature of the apparatus, and it is not possible to separate the fine particles and the mist riding on the rising airflow of the gas.

[0007]

In order to solve the above problems, the present invention simplifies the structure of the dust removing device, reduces the manufacturing cost of the device, prolongs the life of the device, and efficiently removes dust and impurities in exhaust gas and air. It is an object of the present invention to provide a dust removing device characterized by being separated.

[0008]

[0005]

[0009]

In order to achieve the above object, in the dust removing apparatus of the present invention, a gas containing dust and impurities is introduced into one side of an upper wall of a sealed box-shaped separation tank. The untreated gas inflow pipe to be supplied is provided on the other side with a purified gas outflow pipe for discharging the gas from which dust and impurities are separated out of the separation tank, the lower part of the separation tank as an aqueous layer, the upper part as an air chamber,
In the air chamber, a space is provided between the untreated gas inlet pipe and the purified gas outlet pipe, between the tip of the partition plate extending from the upper wall or below the water surface and the water surface or the upper wall, and separated. The dust-containing gas passing through the air chamber of the tank was configured to flow while meandering up and down between the partition plates.

[0010]

[0006] The number of the partition plates is one or two or more, and the greater the number of the partition plates, the better the separating effect. other,
The partition plates may be alternately extended from the lateral direction so that the dust-containing gas meanders left and right.

[0011]

In order to circulate the water in the water layer below the separation tank, a water layer partition plate for vertically dividing the water layer is gently inclined downward from one of the front and rear side walls in the gas traveling direction to the opposite side wall. And extend to the lower part of the untreated gas inflow pipe or purified gas outflow pipe. Was.

[0012]

The drain is connected to a filter, then a pump and a water inlet of the separation tank by a circulation pipe. The supply of water from the water supply port into the water layer may be continuous or intermittent.

[0013]

The lower wall of the separation tank is inclined so as to be at the lowermost part of the separation tank below the opening formed between the tip of the water layer partition plate and the side wall, and an opening / closing valve for taking out sediment at the lowermost part. Was provided.

[0014]

[0010]

[0015]

The dust-containing gas blown out from the untreated gas inflow pipe of the separation tank of the dust removal apparatus constructed as described above flows downward, collides with the water layer surface at the bottom of the separation tank, turns, and turns upward. At that time, most of the particles and fine particles rush into the water by their own weight and inertial energy, are taken in by the water, and settle down in the water layer.
Some of the fine particles and impurities that rise on the surface of the water are cooled by the water surface and condensed, gradually lose their ability to ascend, and eventually fall under their own weight.

[0016]

Further, fine particles and impurities which rise with the gas and move upward also collide with the upper wall or the partition wall of the separation tank due to the inertia of the particles while rotating at the upper end of the partition plate, and lose inertial energy. Fall. The dust-containing gas swirling the partition plate pushed by the gas behind and colliding with the water layer surface again or rotating at the lower end of the partition plate loses inertial energy and particles and impurities are taken into the water at the same time. The gas contacts the water surface and is cooled.

[0017]

At this time, the smaller the distance between the tip of the partition plate and the water surface, the greater the loss of inertia energy of the particles and the greater the cooling effect of the gas. In this way, as many gas and particles as the number of partition plates,
The separation of dust and impurities is repeated, and the gas is discharged from the purified gas outlet pipe.

[0018]

On the other hand, particles and impurities that have fallen into the water layer settle down in the water layer, and the sediment is washed away by the flow of circulating water flowing from the water supply port of the water layer during the settling, and the sediment is removed from the separation tank. The sediment falling on the bottom wall or the water partition plate slides down due to the inclination of the bottom wall and the water partition plate, and settles at the bottom of the separation tank (which is also the bottom of the water layer).

[0019]

The circulating water in the water layer serves as cooling water to cool the entire separation tank, cool the high-temperature dust-containing gas flowing through the air chamber, and remove the high-temperature dust-containing gas blown out from the untreated gas inlet pipe. Prevent the boiling of water generated by heating the water in the layer.

[0020]

[0015]

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a dust removing device is not inserted into an upper wall near one side wall of a box-shaped separation tank 1 so as to be inserted downward through the upper wall. A processing gas inflow pipe 2 is provided, and a purification gas outflow pipe 3 is provided in an upper wall near the other side wall facing one side wall so as to penetrate downward through the upper wall.

[0022]

At the lower end of the separation tank 1, an untreated gas inflow pipe 2 and a purified gas outflow pipe 3 are provided at an appropriate distance from the water layer 4.
And the untreated gas inflow pipe 2 of the air chamber 5 above the water layer 4.
The partition plate 6 parallel to the side wall is alternately extended downward from the upper wall or upward from below the water surface of the water layer 4 so as to extend the tip of each partition plate 6 between the water surface and the upper surface. It was provided at an appropriate distance from the wall.

[0023]

With this configuration, the gas containing dust and impurities discharged from the garbage and waste incinerator passes through the duct and enters the air chamber 5 of the separation tank 1 of the dust remover through the untreated gas inlet pipe 2. The gas blown out from the unprocessed gas inflow pipe 2 collides with the water surface immediately below and turns, rises, turns the tip of the first partition plate 6 above, and is pushed by the gas behind or sucked forward. The lower part of the second partition plate 6 turns and rises while touching the water surface. The gas that has swirled at the upper end of the third partition plate 6 flows downward, passes through the purified gas outlet pipe 3 into the atmosphere or is sucked by a suction pump and discharged to another device.

[0024]

In order to circulate the water in the water layer 4 below the separation tank 1, the water layer partition plate 7, which divides the water layer 4 up and down, is moved downward from the side wall of the purified gas outlet pipe 3 toward the untreated gas inlet pipe 2. The water supply port 8 is provided at the upper part of the water layer partition plate 7, and the water outlet 9 is provided at the lower part of the water layer partition plate 7. As a structure provided on the three side walls, the water flowing into the water layer 4 from the water supply port 8 flows over the water layer partition plate 7 and turns through the opening below the untreated gas inflow pipe 2 to turn the water layer partition plate 7. To the drain 9 through the lower part of.

[0025]

The low wall ₁₀ of the separation tank 1 is inclined just below the untreated gas inlet pipe 2 so as to be at the lowermost part of the separation tank 1, and an opening / closing valve ₁₁ is provided at the lowermost part. The sedimented particles were allowed to settle at the bottom.

[0026]

At this time, most of the particles and impurities stop at the bottom of the separation tank 1 as a sediment, but a small amount of particles and impurities are carried by the circulating water and are discharged from the drain port 9 through the circulation pipe by the filter ₁₂ . The filtered circulating water enters the water layer 4 of the separation tank 1 from the water supply port 8.

[0027]

When the operation of the dust remover is completed and the sediment accumulates at the bottom of the separation tank 1, the on-off valve ₁₁ of the separation tank 1 is opened to take out the sediment and wash the inside of the separation tank 1.

[0028]

In the embodiment of the present invention, the purified gas outflow pipe 3 is provided on the water supply port 8 side and the untreated gas inflow pipe 2 is provided on the water level gauge ₁₄ side. 2 may be configured such that the purified gas outflow pipe 3 is provided on the water level gauge ₁₄ side.

[0029]

[0023]

[0030]

Since the present invention is configured as described above, the present invention has the following effects. Since the structure of the device is simple, the manufacturing labor is small and the cost is low. Further, it requires almost no repair, can withstand continuous operation for a long time, and has a small resistance to gas flow, so that the operating cost is low and the service life is long.

Since a water layer is provided at the lower part of the apparatus, it is effective for high-temperature gas.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a dust removing device.

FIG. 2 is a plan view showing an embodiment of the dust removing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Separation tank 2 Untreated gas inflow pipe 3 Purified gas outflow pipe 4 Water layer 5 Air chamber 6 Partition plate 7 Water layer partition plate 8 Water supply port 9 Drain port ₁₀ Bottom wall ₁₁ Open / close valve ₁₂ Filter ₁₃ Pump ₁₄ Water level gauge

Claims (1)

(57) [Scope of request for utility model registration] 1. An untreated gas inlet pipe (2) is provided at one end of an upper wall of a sealed box-shaped separation tank (1), and a purified gas outlet pipe (3) is provided at the other end thereof. A partition plate (6) for meandering the flow of gas is provided above the separation tank (1), an aqueous layer (4) is provided below the separation tank (1), and an aqueous layer separating the aqueous layer (4) up and down. A partition plate (7) is provided to be inclined downward from one of the side walls before and after the gas traveling direction and to a position just below the untreated gas inflow pipe (2) or the purified gas outflow pipe (3), and a water layer partition plate (7). A water supply port (8) is provided at an upper portion and a drainage port (9) is provided at a lower portion, and a filter (12), a pump (13), and a water supply port (9) are provided outside the separation tank (1). 8) and the bottom wall (10) of the separation tank (1).
A dust removing device, characterized in that the bottom of the separation tank (1) is provided below the opening at the tip of the water layer partition plate (7), and an opening / closing valve (11) is provided at the bottom.