JPS6010672Y2 - gas treatment tower - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas treatment tower that performs cleaning or adsorption with water or a chemical solution.

There is a cleaning method to remove harmful components from exhaust gas, and depending on the type of harmful components, water washing, chemical washing, etc. are performed, but in this case, conventionally, separate water washing towers,
A chemical washing tower was installed and treated.

Since this method is relatively expensive in terms of installation space and cost, most single-tower treatments9 are used, such as alkaline cleaning or water cleaning.The former is effective against acidic harmful components such as HCI, but NH3 It has no effect on alkaline harmful ingredients such as.

The latter is effective against substances that are easily absorbed by water, such as NH3, but is incomplete and has little effect on other harmful components.

The present invention provides an exhaust gas treatment device using a compact cleaning method that can remove harmful isomeric components in one tower.

The present invention is an exhaust gas treatment device in which the internal structure of the tower is doubled, and the inner cylinder and outer cylinder are made independent.

According to this structure, water washing, alkaline washing, and pickling can be selected from two types depending on the purpose, depending on the harmful components in the exhaust gas.
It is compact and can perform two-liquid processing with less installation space and cost.

Moreover, at least one of the inner cylinder part and the outer cylinder part can also be used as an adsorbent packed column.

It is also possible to treat a homogeneous thick liquid with a thin liquid in order to increase the gas absorption rate.

Figure 1 shows an embodiment of the present invention, and Figure 2 shows the I of Figure 1.
-I arrow view.

In FIGS. 1 and 2, 1 is an exhaust gas introduction pipe,
2 is an outer cylindrical chamber for performing primary treatment, 3 is a filling material, 4 is a liquid spray nozzle, 4' is a replenishment liquid nozzle, and 5 is a demister 1
Reference numeral 7 denotes an inner cylindrical chamber for performing secondary treatment, which is introduced from the outer cylindrical chamber 2 through a conduit 6.

8 is the filling in the inner cylinder chamber, 9 is a liquid spray nozzle, 9'
1 is a replenishing liquid nozzle (4' and 9' are not necessary for purposes other than water cleaning), 10 is a demister, and 11 is an exhaust gas discharge pipe.

14 is a liquid supply pipe, which is supplied to the nozzle 4.

12 is a discharge pipe for the outer cylinder liquid, and 15 is a supply pipe for the inner cylinder liquid, which is supplied to the nozzle 9.

13 is a discharge pipe for the inner cylinder liquid.

The exhaust gas introduced through the exhaust gas introduction pipe 1 is brought into sufficient air flow contact with the liquid sprayed from the spray nozzle 4 (H2O for water washing, NaO2 liquid for alkaline washing, etc.) by the counterflow filling 3. After that, it is guided to the inner cylinder chamber (secondary processing cylinder) via the demister 5 and the conduit 3.

In between, the mist, hium, by demister and filling,
Dust is removed simultaneously with gas treatment.

Action inside the inner cylinder chamber 7 (for secondary treatment and chemical washing, use NaOH,
Solutions such as H2SO4 and HCl0) are also the same as those in the outer cylinder chamber 2, and after harmful components are removed from the exhaust gas exhaust pipe 11,
It is discharged.

The liquid discharged from the outer cylinder chamber 2 is circulated from the discharge pipe 12 through the pump to the liquid supply pipe 14, and the liquid discharged from the inner cylinder chamber 7 is similarly circulated to the nozzle of the supply pipe 15 through an independent pump.

Manipulation of these liquids is similar to conventional methods.

According to the present invention, since the two-component treatment method can be effectively implemented depending on the harmful components in the exhaust gas, the harmful gas can be completely processed.

In addition, since it is a two-stage process, mist, fume, and dust can be removed more completely, and because it is a front-end process, it can be made more compact, reducing the installation area and lowering costs.

[Brief explanation of the drawing]

FIG. 1 is an elevational view of one embodiment, and FIG. 2 is a cross-sectional view thereof. 2... Outer cylinder chamber, 6... Conduit, 7...
...Inner cylinder chamber.

Claims (1)

[Claims for Utility Model Registration] In a gas treatment tower with a double concentric structure, the internal structure of the tower is doubled and the part between the outer inner cylinder and the inner cylinder (hereinafter referred to as the outer cylinder) is provided independently from each other. ) and the inside of the inner cylinder (hereinafter referred to as the inner cylinder chamber), absorption areas or adsorption areas provided in the outer cylinder chamber and the inner cylinder chamber, one end side of the outer cylinder chamber and one end of the inner cylinder chamber. an exhaust gas passage connecting the outer cylinder chamber and the inner cylinder chamber in series, and has means for supplying different liquids to the outer cylinder chamber and the inner cylinder chamber. A gas processing tower characterized by: