JPS59186628A - Cleaning-up device of gas - Google Patents

Abstract

PURPOSE:To reduce the size of a cleaning-up device for gas by providing one tank provided with devices for feeding and discharging gas and liquid and the 2nd tank provided with a communicating passage which opens and closes in the bottom so as to introduce the gas to be cleaned up from the gaseous phase part of said tank into the absorbent liquid. CONSTITUTION:If an absorbent liquid is supplied through a pipe by a pump 8 into a tank 3 by shifting an operating rod 15 in an up position, the absorbent liquid supplied into the tank 3 is supplied through a flow passage 5 into a tank 4. Since the tanks 3 and 4 are communicated with the outdoor air through the air passage 29 of the rod 15 and a pipe 22, the absorbent liquid can be put in the tanks 3, 4 at the same liquid level. An opening 5a is closed by lowering fully the rod 15 and the outdoor air in the tanks is shut off by a packing 21 in the stage of cleaning-up gas to be cleaned up, the gas is introduced through pipes 11, 13 in series into the tanks 3, 4 by which the effective components can be efficiently removed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas purification device that removes harmful components from a gas containing harmful components, such as various combustion exhaust gases, through an absorption liquid.

Conventional configuration and its problems When purifying exhaust gas containing a large amount of ammonia, alkaline gas, or acidic gas, before introducing the exhaust gas into the oxidation catalyst tank or nitrogen oxide absorbent tank, water, acidic liquid, A method is adopted in which the ammonia and the like are absorbed using an alkaline liquid. In this case, the absorption efficiency can be increased by providing two stages of tanks containing the absorption liquid and introducing the gas to be purified into these tanks in series.

According to this configuration, the absorption efficiency is improved, but if a liquid supply/drainage device is attached to each tank for replacing the absorbent liquid with a new absorbent liquid when it becomes saturated, there is a problem that the apparatus becomes dependent.

OBJECTS OF THE INVENTION The present invention provides a small-sized gas purification device in which liquid is easily supplied and drained to both tanks by a liquid supply and drain device provided in one tank.

Structure of the Invention The gas purification apparatus of the present invention includes a first tank that accommodates an absorption liquid and is provided with a gas introduction means for introducing a gas to be purified into the absorption liquid; The bottoms of both tanks are communicated with a second tank provided with a gas introduction means for introducing the gas to be purified into the absorption liquid from the gas phase part and further provided with a gas discharge means for discharging the gas from the gas phase part to the outside. A liquid passageway, an opening/closing means for opening and closing the liquid passageway, an opening/closing means for opening/closing an air passageway communicating the gas phase portion of the first tank with the outside in conjunction with the opening/closing means, and a first tank. It has a liquid supply/drainage means provided in the.

Description of examples The figure shows a gas purification device according to the invention.

1 is a tank body, and a partition wall 2 separates a first tank 3 and a second tank.
It is divided into tank 4 and tank 4. Reference numeral 5 designates a liquid passageway that communicates the bottoms of both tanks, and 6 and 7 designate lids that close the openings of the tanks 3 and 4, respectively. A liquid suction/drainage pipe 9 having a pump 8 is attached to the lid 6, from which an absorption liquid 10 for absorbing harmful gases is injected into the tank.

Reference numeral 11 denotes a gas introduction pipe for introducing the gas to be purified into the absorption liquid in the first tank s, and has a bubbler 12 having a large number of vent holes at its tip. A pipe 13 introduces the gas to be purified from the gas phase in the tank 3 into the absorption liquid in the tank 4, and has a bubbling device 14 at its tip.

Reference numeral 15 designates an operating rod having a knob 16 at the upper end, a valve 17 at the lower end for closing the opening of the liquid passage 5 in the tank 3, and a screw hole 18 in the lid 6 screwed into the second part. Threaded part 19
When the operating rod 15 is lowered all at once, the valve 17 closes the opening S5a, and the banking 21 closes the screw hole. Although the valve 17 is in close contact with the opening edge of the valve 18 to block the outside air from the tank 3, when the valve 17 is separated from the opening 5a as shown in the figure, the tank 3 is communicated with the outside air through the ventilation path 20. 22 is an exhaust pipe that exhausts the gas in the tank 4 to the outside.

This gas purification device is used, for example, as a primary purification device for purifying the exhaust gas of a dental wax incinerator, and the gas introduction pipe 11 is connected to the incinerator, and the gas discharge pipe 2
2 is connected to an oxidation catalyst tank for oxidizing hydrocarbons and carbon dioxide gas and a nitrogen oxide absorbent tank, and gas suction means is provided on the pipe 22 side. In that case, water is used as the absorbing liquid 10 to absorb a large amount of ammonia, but it can be applied to various uses such as using an alkaline liquid to absorb acidic gas or an acidic liquid to absorb alkaline gas. can.

Now, as shown in the figure, if the operating rod 15 is in the raised position and the pump 8 supplies the absorption liquid into the tank 3 through the pipe, the absorption liquid supplied into the tank 3 will be transferred into the tank 4 through the liquid passage 5. Since the tanks 3 and 4 are in communication with the outside air through the ventilation passage 2° of the operating rod 15 and the pipe 22, it is possible to store the absorption liquid in the tanks 3 and 4 at the same liquid level. . Further, liquid can be easily drained through the pipe 9 in the same manner as described above.

Next, when purifying the gas, the operating rod 16 is lowered all at once to close the opening 5a, and the inside of the tank 3 is isolated from the outside air by the backing 21.
is introduced into the tanks 3 and 4 in series, and harmful components can be efficiently removed.

Effects of the Invention As described above, according to the present invention, it is possible to obtain a small-sized gas purification device with high absorption efficiency and easy supply and drainage of absorption liquid.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view showing an embodiment of the gas purification apparatus of the present invention. 2.3...Tank, 5...Liquid passage, 6
a...Opening, 9...Liquid supply/drainage pipe, 1
0... Absorption liquid, 11° 13... Gas introduction pipe, 15... Operating rod, 17... Valve,
20...Vent passage, 22...Exhaust pipe.

Claims (1)

[Claims] a first tank that accommodates the absorption liquid and is provided with gas introduction means for introducing the gas to be purified into the absorption liquid; and a first tank that accommodates the absorption liquid and absorbs the gas to be purified from the gas phase portion of the first tank; a second tank provided with a gas introduction means for introducing into the liquid and further provided with a gas discharge means for discharging the gas from the gas phase portion to the outside; a liquid passageway that communicates the bottoms of both tanks; and this liquid passageway. An opening/closing means for opening/closing, an opening/closing means for opening/closing an air passage connecting the gas phase part of the first tank with the outside in conjunction with the opening/closing means, and a liquid supply/drainage means provided in the first tank. Gas purification equipment with.