JP3167609B2 - Soot purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soot purification apparatus formed so as to purify soot discharged into the atmosphere from a chimney of, for example, a thermal power plant, a steel plant, or a plant for incinerating industrial waste. More specifically, the present invention relates to a soot purification device formed so that smoke is passed through a spray liquid to remove suspended matters such as carbon particles, nitrogen oxides and sulfur dioxide, and air pollutants contained in the smoke.

[0002]

2. Description of the Related Art Conventionally, this type of apparatus is, for example, one formed so as to separate carbon particles and the like contained in soot by gravity, inertia force or centrifugal force, or purifies gas by removing it through a filter or a filtration step. And a filter formed by using a liquid as a separating agent for purification.

[0003]

The conventional apparatus has advantages and disadvantages depending on the processing structure, but in the first place, this kind of apparatus purifies soot which causes air pollution and environmental pollution, and protects the natural environment and generates pollution. As a precaution, the operation of the device must not pollute the environment. Conventionally, however, in this type of apparatus in which soot is purified using a liquid, it is customary to discharge the discharged wastewater as it is or to discharge water after filtration. Therefore, if this type of device is used in the past, not only the contamination of rivers and the like could not be avoided, but also the use of a large amount of purification liquid,
There was a problem that running cost was required.

The present invention is intended to solve such a problem of the conventional product. Therefore, the technical problem of the present invention is to reduce the running cost as well as to prevent the environmental pollution caused by operation in a soot purification device of a type in which soot is passed through a spray liquid to separate and remove suspended particles and the like in the soot. The cost can be reduced and soot can be purified efficiently .
Is to provide a soot cleaning apparatus so that formation can be achieved also space saving.

[0005]

The present invention employs the following technical means to solve the above-mentioned problems. That is, the present invention provides a soot flow pipe 2 provided with a suction device 1, and a plurality of showers provided at regular intervals along the longitudinal direction of the flow pipe 2 with the ejection surface 6 a facing the flow pipe 2. Nozzle 6
And a tank 7 for collecting purified water spouted from the shower nozzle 6. The flow pipe 2 for soot is protruded from the vertical part 2a in a multistage manner in series with the flow of soot. The suction device 1 is accommodated in the vertical portion 2a, and the bottom surface of the circulation pipe 2 is formed with a downward slope on the side of the duct 11 that communicates with the tank 7 described above. A storage unit 7b for storing purified water filtered by the filtration unit 7a, and a water level maintaining mechanism 7c for constantly maintaining the water level of the purified water in the storage unit 7b. It is characterized in that the purified water in the storage section 7b is supplied to the shower nozzle 6 by a pump 13.

In this case, according to the present invention, the smoke flow pipe 2 is
At least three steps project from the straight part 2a, and the vertical part 2a
It is preferable that the inside is partitioned by a partition 2c.

Further, according to the present invention, the shower nozzle 6 is connected to the flow pipe 2.
May be arranged at the apex position T of the zigzag bending line along the longitudinal direction of. In this case, the purified water is sprayed from the opposite direction alternately, and the spray particles are easily cross-diffused. Therefore, the degree of the combination of the suspended substances in the soot and the spray particles with the spray particles is increased, and the purified gas is cleaned accordingly. it can.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a suction machine, 2 is this suction machine 1
It is a soot distribution pipe provided with. Inflow port 3 of this distribution pipe 2
Is provided with a joint flange 3a for easy connection to the flue 4 or the like. The distribution pipe 2 is supported by a support 5. Further, in this embodiment, the flow pipe 2 is placed horizontally and formed in two stages.

[0009] Incidentally, FIG. 10 shows a case where the flow tube 2 is a four-stage, 11 is a case where it is formed into the multi-stage over five stages.

Reference numeral 2a denotes a vertical portion of the flow pipe 2. In the suction device 1, in this embodiment, a motor 1a is provided at an upper outer surface position of a vertical portion 2a, and a total of eight rotating blades 1b provided at upper and lower positions are provided in the vertical portion 2a. In this case, the rotation shaft 1c is arranged at the axial center position of the vertical portion 2a. 1d is a bearing for supporting the lower end of the rotating shaft 1c.

In this embodiment, the outlet 2b of the flow pipe 2
A fan as the suction device 1 is also provided on the vertical portion 2a on the side. 1e is a drive motor of this fan, and 1f is a drive belt. In the case of the present invention, the suction device 1 is a motor 1
a and 1e may be accommodated in the vertical portion 2a. When three or more flow pipes 2 protrude from the vertical portion 2a as shown in FIGS. 10 and 11, the inside of the vertical portion 2a is partitioned by a partition wall 2c so that the smoke flows smoothly.

Reference numeral 6 denotes a plurality of shower nozzles provided at regular intervals along the longitudinal direction of the flow pipe 2 with the ejection surface 6a facing the flow pipe 2. This shower nozzle 6
As shown in FIG. 7 and the like, is provided with a pressure adjusting valve 6b for changing and adjusting the particle diameter and the ejection range of water, and a flared joint pipe 6c used for disposing the flow pipe 2. . The joint pipe 6c and the nozzle main body 6e are, for example, set screws 6d
Are linked by In this embodiment, the shower nozzle 6 is disposed at the apex position T of the zigzag bending line along the longitudinal direction of the flow pipe 2 as shown in FIG.

Reference numeral 7 denotes a tank for collecting purified water jetted from the shower nozzle 6. The tank 7 includes a collection part 7a for collecting the collected liquid, a storage part 7b for storing purified water filtered by the filtration part 7a, and a water level maintaining mechanism for constantly maintaining the water level of the purified water in the storage part 7b. 7c.

The filtering section 7a includes, for example, a hollow fiber membrane, a reverse osmosis membrane, or a porous material such as ceramics as a filtering material. The storage section 7b is adjacent to the filtration section 7a so as to store purified water flowing out of the filtration section 7a. The water level maintaining mechanism 7c includes a float 8, and a control valve 10 that opens the water pipe 9 of the clean water in conjunction with the float 8 when the float 8 drops below a predetermined position.

Incidentally, the water level maintaining mechanism 7c is not limited to this, and further includes, for example, an electromagnetic valve for opening and closing the water pipe 9, and this electromagnetic valve is formed so as to be turned on / off, driven, and stopped by the operation of the float 8. May be. 7d (see FIG. 10 and the like) is a viewing window, 11 is a duct, and 12 is a flange for a joint. The bottom surface of the flow pipe 2 is formed with a downward slope toward the duct 11.

A pump 13 supplies purified water in the storage section 7b to the shower nozzle 6. This pump 1
The third suction pipe 13a is disposed in the storage part 7b, and the discharge pipe 13b is connected to the shower nozzle 6 through the water supply pipe 14 in a communicating manner. In addition, 15 is a pressure adjusting valve, and 16 is a water distributor.

Next, the operation of the present invention will be described. First, as shown in FIG. 4, purified water is sprayed from the shower nozzle 6,
The soot is sucked by the suction device 1 and passed through the purified water in this state, as indicated by an arrow in FIG. Then, carbon particles and the like in the smoke are combined with the particles of the mist-like purified water, and suspended particles, nitrogen oxides and the like in the smoke are separated.

Next, the water particles are liquefied, flow down along the bottom surface of the flow pipe 2, and are collected in the tank 7. The recovered liquid is filtered by the filtration unit 7a of the tank 7, and the purified water after filtration is stored in the storage unit 7b.

The purified water in the storage section 7b is supplied to the pump 13
The pressure is supplied to the shower nozzle 6 by the
Is sprayed into the distribution pipe 2 again. In the device of the present invention,
When the purified water naturally decreases due to evaporation or the like, and the water level in the storage portion 7b becomes lower than a preset position, the water level is maintained from the water pipe 9 by the water level maintaining mechanism 7c, and the water level is kept constant.

[0020]

As described above, the present invention sprays purified water from a shower nozzle to separate suspended substances and the like in soot with the purified water, filters the water through a filtration section of a tank, and stores the filtered water in a storage section. Then, the water is maintained at a constant water level by a water level maintaining mechanism, and the pressure is supplied to the shower nozzle by a pump from the reservoir and sprayed into the flow pipe again. Therefore, according to the present invention, it is only necessary to replenish fresh water by an amount that is naturally reduced by evaporation or the like, so that running costs can be reduced and not only can soot be efficiently purified, but also dirty soil including suspended substances and the like in soot can be obtained. Since water is circulated and used without dripping, there is an effect that the environment is not polluted.

Further, according to the present invention, the soot flow pipe is protruded from the vertical portion thereof in a multi-stage manner in series with the flow of the soot so as to be laterally arranged, a suction device is housed in the vertical portion, and the flow pipe is provided. The bottom surface is formed with a downward slope on the side of the duct leading to the tank. Therefore, according to this, it is possible to save the space of the installation location, and it is possible to provide this kind of apparatus having a large purification processing ability even if the installation area is small.

According to the third aspect of the present invention, since the shower nozzle is disposed at the apex of the zigzag bending line along the longitudinal direction of the flow pipe, the use of the shower nozzle makes it possible to spray all over the flow pipe. Since the mist state can be averaged and equalized, the degree of separation of suspended substances and the like can be increased accordingly, and the purification rate can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a device of the present invention.

FIG. 2 is a perspective view of the same device with a part cut away.

FIG. 3 is a plan view of a main part of a flow pipe for explaining an arrangement location of a shower nozzle.

FIG. 4 is a longitudinal sectional view of a main part, partially cut away, for explaining the operation of the above device.

FIG. 5 is an exploded perspective view of the suction device.

FIG. 6 is an exploded perspective view of a suction device provided at an outlet of the distribution pipe.

FIG. 7 is an exploded perspective view of the shower nozzle.

FIG. 8 is a perspective view of a main part of a water level maintaining mechanism.

FIG. 9 is a perspective view of a water distributor.

FIG. 10 is a partially omitted perspective view showing another embodiment of the device of the present invention.

FIG. 11 is a partially omitted perspective view showing still another embodiment of the same device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction machine 2 Flow pipe 6 Shower nozzle 6a Jetting surface 7 Tank 7a Filtration part 7b Storage part 7c Water level maintenance mechanism 13 Pump

Claims (2)

(57) [Claims] 1. A flow pipe for soot provided with a suction device, a plurality of shower nozzles provided at regular intervals along a longitudinal direction of the flow pipe with an ejection surface facing the flow pipe, and the shower nozzle And a tank for collecting purified water spouting from the tank .
Along with being protruded in multiple stages in a state in series with the flow and placed horizontally, a suction device is housed in the vertical part, and the bottom surface of the flow pipe is formed with a downward slope on the side of the duct leading to the tank, Further, the tank is formed with a filtration section for the recovered liquid, a storage section for storing purified water after filtration in the filtration section, and a water level maintaining mechanism for constantly maintaining the water level of the purified water in the storage section. A soot purifying apparatus, wherein purified water in the storage section is supplied to the shower nozzle by a pump. 2. A shower nozzle soot purifier according to claim 1, characterized by being arranged at vertexes of the zigzag bent line along the longitudinal direction of the flow pipe.