JPH09290131A - Gas treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the contamination from occurring by odor or a noxious gas on the periphery of a circulating tank without the necessity to install a tower for removing a harmful material and without releasing the air containing odor or a noxious gas into the atmosphere by connecting a circulating tank to a sealed pot with a new duct and at the same time, hermetically sealing the sealed pot. SOLUTION: A spray or a spraying pipe 2 for the circulating water is arranged atop a cooling/absorbing tower or a reaction tower 1 and an atmospheric open-type sealed pot 3 is arranged halfway through return piping 4 for the circulating water. In the gas treating device of the above configuration, piping 9 for the self-circulation of an exhaust is arranged anew to connect a circulating tank 5 to sealed pot 3 to hermetically seal the sealed pot 3. Consequently, when a liquid coming out of the tower 1 drops into the circulating tank 5 from the sealed pot 3 through the return piping 4, a large amount of gas is absorbed from the piping 9 for the self-circulation of an exhaust, entering into the circulating tank 5 from the outlet of the sealed pot 3. As the circulating tank is hermetically sealed, the liquid containing odor or a noxious gas sucked from the outlet of the sealed pot 3 is circulated through the piping 9 without any leakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cooling, absorbing or reacting a gas containing an odor, a harmful gas or an explosive gas with a liquid, and releasing the odor from the treated water after the treatment or corroding the equipment. The present invention relates to a gas treatment device for preventing the above.

[0002]

2. Description of the Related Art Generally, H ₂ , CO, H ₂ S, NH ₃ , and HC are contained in coke oven gas generated from a coke oven.
It contains flammable, toxic and odorous gases such as N and benzene, and it is very difficult to get these gases out of the system. Therefore, the conventional method will be described with reference to FIG. As shown in FIG. 2, when the liquid from the tower 1 drops from the seal pot outlet 3 through the circulating water pipe 4 from a high place (for example, about 5 m or more) into the circulation tank 5, the seal pot A large amount of air 10 is sucked in from the 3 outlet, and the odor, harmful, and explosive gas mixed in the liquid are entrained, and the circulation tank 5
Then, it was diffused around the circulation tank 5 to corrode the working environment for workers and the surrounding equipment. Furthermore, when these damages are severe, a detoxification tower is installed and the cleaning liquid 12 produces odor
Had removed harmful and explosive gas.

[0003]

As described above, according to the conventional method, the odor, harmful or explosive gas mixed in the liquid is entrained and diffused around the circulation tank to perform the work for the worker. There was a problem of corroding the environment and surrounding equipment.

[0004]

SUMMARY OF THE INVENTION The present invention provides a gas treatment that overcomes the problems discussed above. The gist of the invention is to have a means for introducing gas from outside the system in the lower part of the cooling / absorption tower or reaction tower, and to connect the upper part of the tower and the circulation tank to circulating water going pipe and the lower part of the tower. And a circulation tank are connected to each other by circulating water return pipes, a circulating water spattering means is arranged in the upper part of the tower, and an atmosphere open type seal pot is arranged in the middle of the circulating water return pipes. In the processing apparatus, the circulation tank and the seal pot are connected by a new pipe line, and the seal pot is hermetically sealed.

Hereinafter, the present invention will be described in detail. The present invention uses a liquid to cool a gas containing an odor and a harmful gas,
In a device that absorbs or reacts, a large amount of air sucked by a siphon action when falling into the atmosphere from a high place after the liquid is transiently or cyclically used contains odors, harmful, and explosive gases. It drops with saliva and contains odors and harmful gases, but by sealing the air containing these odors and harmful gases in the circulation tank after dropping, and using the siphon action again, self-suction circulation Since there is no introduction of air from the outside of the system unlike the conventional air-dissipating siphon, there is no need to release it into the atmosphere or install a detoxification tower, and pollution by odors and harmful gases around the circulation tank Can be prevented.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the embodiment shown in FIG. In the cooling, absorption or reaction tower 1, a gas containing an odor and a harmful gas flows upward from below. In order to cool, absorb or react the gas in the cooling, absorption or reaction tower 1, the liquid is cooled, absorbed or reacted from the upper part of the reaction tower 1,
It is sprayed from the spray or spray tube 2. The sprayed liquid is cooled, absorbed or comes into contact with the gas in the reaction tower 1 to cool,
After absorbing or reacting, the gas in the tower 1 is sealed from the tower 1 by the seal pot 3 installed outside, and then enters the circulation tank 5 via the circulating water return pipe 4. A part of the circulating liquid is discharged to the outside 6 of the system. The circulating water is sprayed to the tower 1 again via the circulating pump 7 and the circulating water pipe 8. When cooling or heating the gas in the tower 1, a cooler or a heater is installed at the outlet of the circulation pump 7.

Here, when the liquid from the tower 1 drops from the seal pot 3 through the circulating water return pipe 4 into the circulation tank 5, from the outlet of the seal pot 3 to a new gas pipeline. A large amount of gas is sucked from the exhaust self-circulation pipe 9 and enters the circulation tank 5. The circulation tank 5 is sealed, and the seal pot 3
The liquid containing odor and harmful gas sucked from the outlet passes through the exhaust self-circulation pipe 9 without leaking to the outside of the circulation tank 5,
Circulated.

[0008]

EFFECTS OF THE INVENTION In a device for cooling, absorbing or reacting a gas containing an odor, a harmful gas or an explosive gas with a liquid, the liquid may be transiently or after being circulated and used to reach a high place (for example, about 5 m or more).
The air that was sucked in a large amount by the siphon action when it was dropped from the atmosphere into the atmosphere drops together with the liquid containing odor and harmful gas,
Although it contains odors and harmful gases, the air containing these odors and harmful gases is sealed in the circulation tank after it falls, and it is released into the atmosphere by using the siphon action and self-suction circulation. In addition, it is not necessary to install a detoxification tower, and it is possible to prevent pollution by odors and harmful gases around the circulation tank.

[Brief description of drawings]

FIG. 1 is a diagram showing an equipment flow showing an embodiment according to the present invention.

FIG. 2 is a diagram showing an equipment flow of a conventional method.

[Explanation of symbols]

 1 Cooling, absorption or reaction tower 2 Spray or sprinkling pipe 3 Seal pot 4 Circulating water return pipe 5 Circulating tank 6 Outside system 7 Circulating pump 8 Circulating water going pipe 9 Exhaust self-circulating pipe 1 0 Air 1 1 Harmful tower 1 2 Cleaning liquid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Yamada, 59 Nikka Plant Design Co., Ltd., 46 Nakahara, Tobata-ku, Kitakyushu, Fukuoka Prefecture (72) Inventor Toshiya Higuchi 46, Nakahara, Tobata-ku, Kitakyushu, Fukuoka 59 Nippon Steel Co., Ltd. Machinery & Plant Division (72) Inventor Kiyoshi Ueno 46-59, Nakahara, Tobata-ku, Kitakyushu, Fukuoka Prefecture 59-59 Nippon Steel Co., Ltd. Machinery & Plant Division

Claims (1)

[Claims] 1. A cooling / absorption tower or a reaction tower is provided with a means for introducing gas from the outside of the system, an upper part of the tower and a circulation tank for circulating water, and a pipe above the lower part of the tower and a circulation tank. In the gas processing device, each of which is connected with a circulating water return pipe, is provided with a circulating water spraying means at the upper part of the tower, and is provided with an atmosphere open type seal pot in the middle of the circulating water return pipe.
A gas treatment apparatus, characterized in that the circulation tank and the seal pot are connected by a new pipe line and the seal pot is sealed.