KR0175541B1 - Trash burner using waste gas - Google Patents

Abstract

The present invention relates to a waste gas incineration apparatus, which comprises an incinerator in which a plurality of burners are installed and a thermal storage type first ceramic bed is installed; A purge gas exhaust pipe installed in the incinerator and having an exhaust fan and a discharge damper; A plurality of oven odor gas inflow pipes installed in the incinerator and having inflow dampers; A new outboard inflow pipe installed with the incinerator and having a feeding damper; A plurality of the combustion air circulation tubes for burners provided with the inlet / outlet in the incinerator, the circulation fan, and a part of the combustion air circulation tubes for the burners installed in the first storage ceramic ceramic bed in the incinerator; A plurality of thermal storage type second ceramic beds provided with a part of the oven odor gas inlet pipe and a part of the combustion air circulation pipe for the burner; And a heat storage type third ceramic bed in which a part of the exhaust gas purifying exhaust pipe and a part of exhaust heat utilization pipe having an intake fan are installed.

Description

Waste gas incinerator

FIG. 1 is a block diagram showing a conventional waste gas incineration plant.

FIG. 2 is a block diagram showing a waste gas incineration plant according to the present invention. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

1, 10: Incinerator 1a, 11: Burner

3, 30: purge gas discharge pipe 4: heat exchanger

6, 40: oven odor gas inlet pipe 20: first ceramic bed

33: exhaust fan 42: new outboard fan inlet pipe

50: combustion air circulation pipe 60: second ceramic bed

70: tertiary ceramic bed 80: exhaust heat utilization pipe

The present invention relates to a waste gas incineration apparatus for incineration of waste gas (pollutant-accompanying gas), and more particularly, by using a semi-permanent thermal storage type ceramic bed to operate the incineration plant more efficiently, thereby minimizing energy loss, To a waste gas incineration apparatus.

Generally, waste gas is often generated when producing industrial products. For example, in the case of automobiles, waste gas incineration incinerators, which incinerate harmful gases generated during drying of a paint applied to a vehicle body, An incinerator (1) provided with a burner (6) and installed with a burner (1a); A purified gas circulation pipe 2 connected to an inlet / outlet of the incinerator 1 and having an inlet damper 2a and an intake fan 2b at an inlet thereof; A purge gas discharge pipe 3 branched from the purge gas circulation pipe 2 and equipped with a discharge damper 3a at a branching portion; A heat exchanger (4) installed at an outlet of the purification gas circulation pipe (2); And a fresh outboard inflow pipe 5 having an inlet connected to the heat exchanger 4 and an outlet connected to the incinerator 1 and having an intake fan 5a.

However, since the heat exchanger having a limited lifetime is used as described above, if the heat exchanger is aged, the maintenance cost is increased due to the repair of the trouble. In addition, environmental pollution problems are caused. In the case of replacing the aged heat exchanger, And the productivity is lowered. In addition, the operating cost of the incinerator is also increased.

In addition, since the waste gas incineration plant is installed per oven, there is a problem that the cost is raised.

Therefore, in consideration of the above problems, it is an object of the present invention to provide a waste heat recovery apparatus and a waste heat recovery apparatus, which can minimize the energy loss, reduce the operation cost, and prevent environmental pollution by operating the incineration plant more efficiently by using a semi-permanent thermal storage ceramic bed instead of the heat exchanger. It is intended to provide incineration facilities.

It is an object of the present invention to provide an incinerator in which a plurality of burners are installed and a thermal storage type first ceramic bed is incorporated therein; A purge gas exhaust pipe installed in the incinerator and having an exhaust fan and a discharge damper; A plurality of oven noxious gas inlet pipes installed in the incinerator and having an inflow damper; A new outboard inflow pipe installed in the incinerator and having a feeding damper; A plurality of the combustion air circulation tubes for burners provided with the inlet / outlet in the incinerator, the circulation fan, and a part of the combustion air circulation tubes for the burners installed in the first storage ceramic ceramic bed in the incinerator; A plurality of thermal storage type second ceramic beds provided with a part of the oven harmful gas inflow pipe and a part of the combustion air circulation pipe for the burner; And a heat storage type second ceramic bed in which a part of the purified gas exhaust pipe and a part of the exhaust heat utilization pipe having an intake fan are installed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 2 is a view showing a waste gas incineration plant according to the present invention.

The technical means of the waste gas incineration apparatus according to the present embodiment includes an incinerator 10 for incinerating harmful gases and the like, a means for transferring heat to the harmful gas for incinerating the high heat generated in the incinerator 10 to preheat the incinerator 10, , And means for increasing the energy efficiency by using the high heat of the incineration purified gas by heating or the like. However, since each of the above means can not be clearly distinguished, it can not be said that the functions are linked to each other and each function is sequentially performed, so that it is difficult to explain separately, and this will be explained together with each constituent element .

Briefly, the heat sources are provided in the incinerator 10, the heat transfer means are the first, second and third ceramic beds 20, 60, and 70, and the supply of the noxious gas The ozone is injected into the ozone gas inflow pipe 40, the noxious gas is burned out by the burning gas discharge pipe 30, and the air heating is performed by the exhaust heat utilization pipe 80.

On the other hand, the preheating of the noxious gas before incineration is due to the high temperature provided in the combustion air circulation pipe (50) connected to the incinerator.

The heat transfer means may be a metal material such as a copper plate. This is because the ceramic is made of a ceramic bed because of its high thermal conductivity and good thermal conductivity, compared with the difficulty of being easily damaged when exposed to high temperature for a long time.

As shown in the figure, in the incinerator of the present embodiment, two or more burners 11 are provided in the incinerator 10, and the ignition energy of the burner 11 can be LPG or the like. When this LPG or the like is called a combustion gas, the combustion gas circulates to the incinerator 10 by the combustion air circulation pipe 50.

The combustion air circulation pipe 50 is formed together with the circulation fan 51 from an exhaust port formed in a portion adjacent to the burner 11 to the outside and then enters the incinerator 10 and is returned to the outside, Is connected to the burner (11) via a portion adjacent to the inflow pipe (40).

As described above, the combustion air circulation pipe 50 serves to preheat the noxious gas. The noxious gas is supplied to the oven noxious gas inlet pipe 40 after receiving the high temperature from the incinerator 10 As the heat transfer means, a first ceramic bed 20 is formed in the incinerator 10, and a second ceramic bed 60 is formed in the furnace noxious gas inlet pipe 40, respectively.

That is, the first ceramic bed 20 collects the high temperature of the burner 11 and transfers it to the combustion air of the combustion air circulation pipe 50. The second ceramic bed 60 is connected to the combustion air circulation pipe 50, To the oven noxious gas inlet pipe (40) to preheat the noxious gas before it is incinerated.

Meanwhile, the oven noxious gas inlet pipe 40 supplies noxious gas in both directions of the burner 11 in order to increase the efficiency. Therefore, the combustion air circulation pipe 50 is also formed in the same number, The first ceramic bed 20 and the second ceramic bed 60 are formed in the same number as the combustion air circulation pipe 50 and the oven harmful gas inlet pipe 40.

The oven noxious gas inflow pipe 40 forms an inflow opening in an oven for drying the paint of the vehicle and is connected to the incinerator 10 via the second ceramic bed 60. In the middle of the incinerator 10, Is connected to the new outboard inflow pipe (42). An inflow damper 41a is formed at a portion communicating with the incinerator 10 to control an inflow amount.

The purge gas discharge pipe 30 is formed with a discharge port of the incinerator 10 together with a damper 31a so as to communicate with the outside of the discharge fan 33. In addition, And is connected to a residual gas discharging branch pipe 32 formed of a plurality of branch pipes. Therefore, the main pipe 31 is referred to as a portion connected from the incinerator 10 to the branch pipe 32 for discharging residual gas. The residual gas discharge branch pipe (32) is provided with a damper (32a) to adjust the discharge amount.

The reason why the purge gas discharge pipe 30 is connected to the residual gas discharge branch pipe 32 is that the residual gas which is incinerated in the incinerator 10 but is not discharged by the incinerator 10 is subjected to dynamic pressure And to discharge them together.

As described above, the exhaust heat utilization pipe (80) warms the water by using the heat in the purge gas discharge pipe (30) or warms the indoor air to increase the energy efficiency. This is because the pipe in which the filter 84 is formed is connected from the outside and is connected to the purge gas discharge pipe 30 and the heat transfer means and extends from the purge gas discharge pipe 30 to form the suction fan 81, Respectively. The water heating pipe 83 and the heating pipe 82 are provided with discharge dampers 82a and 83a, respectively. The heat transfer means collects the heat of the purge gas discharge pipe (30) as a third ceramic bed (70) and transfers it to the exhaust heat utilization pipe (80).

The main pipe 31 of the purge gas discharge pipe 30 and the discharge dampers 31a and 32a of the branch pipe 32 are installed in the incinerator 10 so that the oven harmful gas The inflow damper 41a of the integrated pipe 41 of the inflow pipe 40 and the inflow damper 42a of the inflow pipe 42 of the installed new outboard inflow pipe 42 are opened. In this state, when the operation switch of the waste gas incineration apparatus is turned on, the discharge fan 33 of the purified gas discharge pipe 30 is rotated by about 50% by a control device such as an inverter, Is introduced into the incinerator 10 through the integrated pipe 41 to be purified by incineration of the harmful elements, and then purified by the incinerator 10, Is discharged to the outside through the discharge fan (33) through the branch pipe (32) of the gas discharge pipe (30) and the main pipe (31).

The circulation fan 51 of the combustion air circulation pipe 50 for the burner is operated and the discharge damper 32a of the branch pipe 32 is closed so that the burner 11 of the incinerator 10 is operated, When the temperature of the first ceramic bed 20 in the incinerator 10 is increased to about 650 DEG C, the feeding damper 42a of the new outboard fan inlet pipe 42 is closed and the oven noxious gas is opened And flows into the incinerator 10 through the inflow damper 41a to start incineration.

At this time, the discharge fan 33 of the purge gas discharge pipe 30 is controlled by a control device such as an inverter so that the rotation speed becomes faster when the amount of the harmful gas of the oven is large, that is, And the purified gas incinerated through the main pipe 31 is discharged to the outside.

When the purification of the oven noxious gas is completed, the circulation fan 51 of the combustion air circulation pipe 50 for burner and the burner 11 of the incinerator 10 are stopped and closed, The feed damper 42a and the discharge damper 32a of the branch pipe 32 are opened.

On the other hand, the residual gas in the incinerator 10 through the discharge damper 31a of the opened main pipe 31 is discharged from the discharge fan 33 (see FIG. 1) of the purified gas discharge pipe 30 whose rotational speed is reduced by about 50% So that the incinerator 10 is purified.

The discharge fan 33 is stopped and the discharge damper 31a, 32a, the inlet damper 41a and the feeding damper 42a are opened and the incinerator is operated Lt; / RTI >

In the waste gas incineration apparatus of the present invention operated in this way, the incinerator 10 is heated by the burner 11 to about 820 DEG C and is heated to about 650 DEG C by the first ceramic bed 20 in the incinerator 10, 1 burner air circulation pipe 50 installed in the ceramic bed 20 is about 550 DEG C and is installed in the second ceramic bed 60. The combustion air circulation pipe 50 for burner is connected to the oven Deg.] C to about 280 [deg.] C at about 550 [deg.] C while depriving the oven noxious gas of about 100 [deg.] C flowing through the pipe 40. The oven noxious gas inlet pipe 40, The second ceramic bed 60 is heated to about 250 to 280 DEG C, and the second ceramic bed 60 stores about 400 DEG C of heat.

The third ceramic bed 70 stores heat of about 90 ° C to 100 ° C by the incineration purified air of about 200 ° C discharged through the main pipe 31 of the purge gas discharge pipe 30.

Thus, the incineration purified air is discharged to the outside while holding about 90 ° C of heat.

Since the heat of the semi-permanent second ceramic bed, which is to store the heat, affects the incinerator, energy is saved and the operation ratio of the incinerator is reduced. Since the second ceramic bed is semi-permanent, almost no failure occurs, The maintenance cost is reduced, and there is no need to replace it, so that the productivity is improved.

The waste gas incineration plant of the present invention can be used by connecting a plurality of ovens, which is advantageous in terms of cost reduction.

Claims (4)

The incinerator (10) comprises an incinerator (10) in which two or more burners (11) are installed; Is introduced into the incinerator 10 again with the aid of the circulation fan 51 from a discharge port formed in a portion adjacent to the burner 11 of the incinerator 10 and connected to the heat transfer means and extended to the outside of the burner 11 A combustion air circulation pipe (50) connected thereto; An oven harmful gas inflow pipe 40 connected to the combustion air circulation pipe 50 by heat transfer means and having an inlet formed in an oven for drying the paint of the vehicle and connected to the incinerator 10; The harmful gas introduced from the oven harmful gas inflow pipe 40 is exhausted from the incinerator 10 by burning the harmful substances and the exhaust port is formed on one side of the incinerator 10 together with the damper 31a, A purge gas discharge pipe (30) having a fan (33) so as to communicate with the outside; The pipe formed with the filter 84 extends from the outside to form the suction fan 81 and is connected to the water heating pipe 83 and the heating pipe 82, And an exhaust heat utilization pipe (80) for exhausting the waste gas. The waste incineration apparatus according to claim 1, wherein each of the heat transfer means is formed of ceramic beds (20, 60, 70). 2. The waste incineration apparatus according to claim 1, wherein the oven harmful gas inflow pipe (40) is connected to the new outboard inflow pipe (42) as an oxygen supply source of the burner in the middle connected to the incinerator (10). The waste incineration apparatus according to claim 1, wherein the purge gas discharge pipe (30) is connected to a residual gas discharge branch pipe (32) formed from a small pipe from both sides of the incinerator (10).