KR100966116B1 - Apparatus for treating ammonia-containing gas - Google Patents

Abstract

The present invention relates to a waste gas incineration treatment apparatus containing ammonia (NH3), and more specifically, the flame hole 12 for the flame injection of the burner to one side of the main body 11 consisting of a refractory material and the waste gas injection hole on the outside ( 13, the discharge hole 14 on the other side and the rectangular combustion chamber 15 is formed inside, the combustion chamber 15 is left and right combustion chamber (15a) by the partition wall portion 20 is formed through a plurality of connection holes in the center ( A first incinerator 10 partitioned into 15b); A second incinerator (32) connected to the first incinerator and having an inlet (32) and a lower outlet (33) for injecting additional incinerators in the upper part of the main body (31) formed of a refractory material and a rectangular combustion chamber (35) therein ( 30); Between the cooling vessel 40 connected to the outlet 33 of the second incinerator 30 to cool the exhaust gas by the cooling water therein, and separating the water and gas containing foreign matter from the discharged exhaust gas By providing a cron separator 50 and a dust collector (60) to remove the foreign substances of the exhaust gas and the exhaust gas through the water spray (65) to discharge the water and the foreign matter separated and discharged again, containing ammonia The purpose is to exhaust the waste gas in a clean state by satisfying the high temperature pyrolysis combustion conditions to suppress the emission of NOx as well as to suppress the emission of various foreign substances.

 Ammonia, Waste Gas, Incineration, Incinerator, Complete Combustion, Clean, NOX

Description

Incinerator for waste gas containing ammonia {APPARATUS FOR TREATING AMMONIA-CONTAINING GAS}

The present invention relates to an apparatus for incineration of waste gas containing ammonia (NH 3), and more particularly, to decomposing ammonia into N 2 and H 2 by pyrolyzing waste gas containing ammonia (NH 3) at high temperature under oxygen-free conditions. And H2 are combined with O2, and some are incinerated, thereby suppressing NOx emissions and suppressing the emission of various foreign substances, and related to the incineration treatment apparatus of waste gas containing ammonia (NH3), which is discharged in a clean state.

Generally, a large amount of waste liquid / waste gas containing ammonia (NH 3) is emitted from petrochemical plants and semiconductor plants.

The waste liquid / waste gas containing ammonia (NH 3) causes serious social problems due to bad smell, deterioration of water quality, and many research and developments have been carried out for its treatment.

In particular, when incineration of the waste gas containing ammonia (NH3) generally generates a large amount of FUEL NOX, but when ammonia (NH3) is thermally decomposed at a high temperature (1200 ℃) in the absence of oxygen (O2) ammonia (NH3) Is decomposed into N2 and H2, and it is completely burned again so as not to generate FUEL NOX.

However, the conventional incineration plants do not achieve complete combustion of waste gas, but rather contain harmful substances such as dioxins and NOx in the exhaust gases, causing another environmental pollution problem.

The present invention has been invented to solve all the problems of the prior art, by decomposing ammonia into N2 and H2 by pyrolyzing waste gas containing ammonia (NH3) at high temperature under oxygen-free conditions, N2 is discharged and H2 is The purpose is to prevent the generation of NOX because it combines with O2 and incinerates some.

The present invention has an object of preventing the environmental pollution problem by exhausting clean gas by suppressing the emission of various foreign substances as well as suppressing the emission of NOX by making a complete combustion to increase the contact efficiency of the burner flame and ensure a long residence time. .

The present invention is to completely process the waste gas containing ammonia by a simple installation, but the general waste gas containing no ammonia is used to go through a separate simple combustion process, the purpose is to maximize the use efficiency.

This invention,

The injection hole for injecting waste gas containing ammonia in the flame hole and the outside of the flame hole for the flame injection of the burner on one side of the main body composed of the refractory material, the discharge hole on the other side and a rectangular combustion chamber is formed inside, the combustion chamber has a plurality of connection holes in the center A first incinerator divided into right and left combustion chambers by a partition wall formed therethrough;

A second incinerator connected vertically with the first incinerator and forming an inlet and a lower outlet and a rectangular combustion chamber therein for injecting additional incinerators into the upper portion of the main body made of refractory materials;

A cooling vessel connected to the outlet of the second incinerator for cooling the exhaust gas by the cooling water therein; A cyclone separator for separating moisture including gas and foreign matters from the discharged exhaust gas; It is characterized in that it comprises a; dust collector to remove the foreign matter of the exhaust gas and the exhaust gas again discharged by separating the water and foreign matter through the water spray.

The partition wall portion of the combustion chamber is characterized in that it is formed by forming a checker brick of the circular tube shape formed through the connection hole (Checker Bric).

The present invention is characterized in that the water containing the foreign matter in the cyclone separator is configured to recover to the cooling vessel through the recovery pipe.

In the present invention, ammonia-containing waste gas and flame are burned in stages in the first and second incinerators, and the first incinerator is completely pyrolyzed under high temperature in the rare condition of oxygen, thereby suppressing the emission of NOX as well as various It has the effect of suppressing the discharge of foreign substances in a clean state.

In addition, the waste gas containing ammonia is completely combusted and treated in the first and second incinerators by a simple facility, but the general waste gas containing no ammonia is subjected to the simple combustion process by the second incinerator, thereby increasing the use efficiency. It has the effect of maximizing.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

That is, the apparatus for incineration of waste gas containing ammonia of the present invention is as shown in FIGS. 1 to 4.

Flame hole 12 for flame injection of the burner to one side of the main body 11 made of fireproof material, injection hole 13 for injecting waste gas containing ammonia to the outside, discharge hole 14 to the other side and a rectangular combustion chamber inside Form (15),

The combustion chamber 15 is divided into left and right by partition walls 20 having a plurality of connection holes penetrated at the center thereof, and is configured to discharge through the right combustion chamber 15b after thermal decomposition of waste gas in the left combustion chamber 15a. 10,

An inlet 32 and a lower outlet 33 and a rectangular combustion chamber 35 formed therein for injecting additional incineration into an upper portion of the main body 31 which is vertically connected to the first incinerator 10 and made of a refractory material. 2 incinerators (30),

Between the cooling vessel 40 connected to the outlet 33 of the second incinerator 30 to cool the exhaust gas by the cooling water therein, and separating the water and gas containing foreign matter from the discharged exhaust gas It consists of a cron separator 50, and a dust collector (60) for removing the foreign matter of the exhaust gas again by passing through the water spray (65) to discharge the discharge gas to separate the water and foreign matter.

At this time, since the left combustion chamber 15a of the first incinerator 10 has a structure partially blocked by the partition wall 20, the high temperature pyrolysis condition for the complete combustion of the waste gas (1200 ° C., oxygen (O2)) is achieved. Lean conditions).

In addition, the partition wall 20 of the first incinerator 10 is configured to form a checker brick (25) of a circular tube shape through which the connection hole 26 is formed.

And the water containing the foreign matter in the cyclone separator 50 is configured to recover to the cooling vessel 40 through the recovery pipe (55).

As reference numerals, 18 and 28 represent confirmation windows provided in the incinerators 10 and 30.

Next will be a look at the operation and action of the present invention configured as described above.

The present invention is to completely discharge the waste gas containing ammonia (NH3) generated in a petrochemical plant, a semiconductor plant, etc. to clean state.

First, the main body 11 of the first incinerator 10 is sprayed to the combustion chamber 15, especially the left combustion chamber 15a through the flame hole 12 by a burner not shown.

In this state, a waste gas containing ammonia (NH 3) is introduced through the injection hole 13 of the main body 11 of the first incinerator 10 to perform a combustion operation.

At this time, the left combustion chamber 15a of the first incinerator 10 is partially blocked by the partition wall 20 formed by forming a checker brick 25 in the form of a circular tube having a connection hole 26 therethrough. It is formed as a space.

Accordingly, waste gas containing flame and ammonia (NH 3) injected into the left combustion chamber 15a of the first incinerator 10 may be subjected to high temperature pyrolysis conditions (1200 ° C., lean oxygen (O 2)) in the left combustion chamber 15a. ) And maximization of thermal contact efficiency and flame stagnant and heating to high temperature, so complete decomposition of ammonia.

As described above, some of the waste gas from which the ammonia NH is completely decomposed in the left combustion chamber 15a of the first incinerator 10 is slowly discharged to the right combustion chamber 15b through the partition 20.

At this time, the flame and the waste gas passing through the connection hole 26 formed in the checker brick 25 of the partition 20 are to increase the combustion efficiency by mutual thermal contact efficiency.

In this way, the flame and the waste gas discharged to the right combustion chamber 15b through the partition 20 are subjected to the combustion process again and then to the combustion chamber 35 of the second incinerator 30 which is vertically connected to the first incinerator 10. Will be discharged.

In this way, the flame and the waste gas discharged to the combustion chamber 35 of the second incinerator 30 are subjected to a combustion process again. In this case, the second incinerator 30 has ammonia through the inlet 32 above the main body 31. Waste gas or other incinerators that do not contain this will be subjected to the combustion process.

As described above, the present invention performs combustion and contact in multiple stages by adjusting waste heat containing ammonia (NH3) at high temperature in the first and second incinerators, so that NH3 is thermally decomposed into N2 and H2 and discharged. However, the H 2 is combined with O 2 to release the incineration water.

In addition, foreign substances such as various dusts are generated during the combustion process.

In addition, waste gas containing no ammonia (NH 3) is completely burned by the second incinerator.

As such, the clean gas discharged during the combustion process through the second incinerator 30, foreign substances such as dust, incineration water, etc. pass through the cooling vessel 40 under the main body 31, and cools and filters foreign substances by the cooling water. Will be discharged.

And the exhaust gas passed through the cooling vessel again separates the foreign matters, such as clean gas and dust, incineration water from the cyclone duster (50) to discharge the clean gas separately, foreign matters such as dust, incineration water, etc. 55) to the cooling vessel.

In addition, the clean gas discharged through the cyclone duster 50 passes through the water spray 65 of the dust collector 60 again, and again filters the foreign substances of the exhaust gas together with the cooling process to discharge the exhaust gas at room temperature in a clean state. Will be discharged.

Meanwhile, the waste gas incineration treatment apparatus of the present invention maximizes the thermal contact efficiency by ensuring sufficient residence time in the combustion chamber of the waste gas containing flame and ammonia (NH 3), as described above, even when only the first incinerator 10 is used. Since the stagnant and heated to a high temperature state is achieved a complete combustion can be discharged in a clean state.

1 is a block diagram showing the overall configuration of the present invention.

Figure 2 is an enlarged configuration diagram showing the configuration of the first incinerator of the present invention.

3 is a sectional view of the main portion of FIG. 2;

Figure 4 is a perspective view showing the present invention fire brick.

5 is an operational state diagram of the present invention.

** Description of the symbols for the main parts of the drawings **

10: first incinerator 11: main body

12: Fireman 13: Injector

14: outlet hole 15: combustion chamber

20: partition 25: firebrick

15a, 15b: left and right combustion chambers

30: second incinerator 31: main body

32: inlet 33: outlet

35: combustion chamber 40: cooling vessel

50: cyclone separator 55: recovery pipe

60: dust collector 65: water spray

Claims (4)

In the apparatus for incineration of waste gas, Flame hole 12 for flame injection of the burner to one side of the main body 11 made of fireproof material, injection hole 13 for injecting waste gas containing ammonia to the outside, discharge hole 14 to the other side and a rectangular combustion chamber inside Form (15), The combustion chamber 15 is divided into left and right by partition walls 20 having a plurality of connection holes penetrated at the center thereof, and is configured to discharge through the right combustion chamber 15b after thermal decomposition of waste gas in the left combustion chamber 15a. 10, An inlet 32 and a lower outlet 33 and a rectangular combustion chamber 35 formed therein for injecting additional incineration into an upper portion of the main body 31 which is vertically connected to the first incinerator 10 and made of a refractory material. 2 incinerators (30), Between the cooling vessel 40 connected to the outlet 33 of the second incinerator 30 to cool the exhaust gas by the cooling water therein, and separating the water and gas containing foreign matter from the discharged exhaust gas Ammonia is characterized by consisting of a cron separator (50) and a dust collector (60) for removing the foreign matter of the exhaust gas again by passing through the water spray (65) the discharge gas to separate and discharge the water and foreign matter Incineration apparatus for containing waste gas. In the apparatus for incineration of waste gas, Flame hole 12 for flame injection of the burner to one side of the main body 11 made of fireproof material, injection hole 13 for injecting waste gas containing ammonia to the outside, discharge hole 14 to the other side and a rectangular combustion chamber inside Form (15), The combustion chamber 15 is configured to be discharged through the right combustion chamber 15b after thermal decomposition of the waste gas from the left combustion chamber 15a by partitioning from side to side by the partition wall 20 through which a plurality of connecting holes are formed. Incineration apparatus for waste gas containing ammonia. The method according to claim 1 or 2, The partition wall portion 20 of the combustion chamber 15 is formed by forming a checker brick (25) in the form of a circular tube formed through a connection hole 26 of the ammonia-containing waste gas, characterized in that Incinerator. The method of claim 1, The ammonia-containing waste gas incineration treatment apparatus, characterized in that the water containing the foreign matter in the cyclone separator (50) is configured to recover to the cooling vessel (40) through the recovery pipe (55).

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