KR101873464B1 - Waste incinerator treatment system - Google Patents

Abstract

A condensing wastewater treatment system of high concentration sludge according to the present invention comprises a dryer for drying sewage sludge, a condenser for cooling the exhaust gas at a high concentration generated in drying the sewage sludge in the dryer, an incinerator And a waste incinerator to which the incineration process liquid of the incineration process liquid storage tank is injected. The waste incinerator includes a waste incinerator, A secondary combustion chamber disposed above the primary combustion chamber so as to be connected to the primary combustion chamber for secondary combustion of the primary combustion product generated by combustion of the waste in the primary combustion chamber, Chamber and the connection of the primary combustion chamber and the secondary combustion chamber. And an air injection port for injecting air between the primary combustion chamber and the secondary combustion chamber and an air injection port for forming an air curtain by injecting air between the primary combustion chamber and the secondary combustion chamber A pump connected to the nozzle so as to pressurize the incineration process liquid of the incineration process liquid storage tank by a nozzle; and an air compressor connected to the nozzle to pressurize the air with the nozzle.

Description

{WASTE INCINERATOR TREATMENT SYSTEM}

The present invention relates to a high concentration sludge condensate wastewater treatment system, and more particularly, to a high concentration sludge condensate wastewater treatment system that injects an incineration process liquid such as a high concentration sewage sludge condensed wastewater into an appropriate location of an incinerator into which waste is burnt and incinerates, The present invention relates to a high concentration sludge condensate wastewater treatment system.

Various wastes including wastes have been treated by landfill in the past, but in recent years, they have gradually been changed to incineration due to the difficulty of selecting a landfill.

In the method of incineration of waste, a method of charging wastes into the incinerator and supplying air and burning the waste is mainly used.

If the waste is incinerated, exhaust gas is generated in the combustion process. Exhaust gas contains air pollutants such as dust, hydrogen chloride (HCl), sulfur oxides (SOx), nitrogen oxides (NOx), heavy metals including mercury, or dioxins. These harmful components must be removed for environmental protection.

 These harmful substances pollute the soil as well as the atmosphere and water quality, and also the health of the residents near the incinerator and the safety of pets and trees. Therefore, a device for removing harmful substances from the exhaust gas is installed in the incinerator dedicated to household garbage.

In general incinerators for household garbage, leachate is sprayed with a nozzle to regulate the temperature of the exhaust gas, and nitrogen oxides contained in the exhaust gas are designed to be removed by catalytic reaction by injecting ammonia into a selective catalytic reduction reactor (SCR) .

As an example of such an incineration apparatus, Japanese Patent Registration No. 1056662 (Aug. 12, 2011) discloses incineration plants in which a primary combustion chamber and a secondary combustion chamber are arranged vertically. The incinerator disclosed in the above publication includes an incinerator for incineration of waste, a primary combustion chamber provided at one side of the incinerator for burning heat or flame incinerated in the incinerator in a primary combustion, a primary combustion chamber disposed in the upper portion of the primary combustion chamber, And a secondary combustion chamber which completely burns the primary waste heat again. In the secondary combustion chamber, an injection nozzle for injecting urea water reducing agent as a nitrogen oxide reduction device is installed.

However, when the incineration process liquid (urea water reducing agent or the like) is injected directly into the secondary combustion chamber as in the conventional incineration apparatus described above, clinker is likely to form on the wall surface of the secondary combustion chamber, and such clinker promotes deterioration of the wall surface of the secondary combustion chamber . Therefore, the combustion efficiency in the secondary combustion chamber is lowered and the refractory is detached due to the deterioration of the wall, so that the water tube is likely to be exposed in the secondary combustion chamber.

On the other hand, when the incineration process liquid is injected into the primary combustion chamber, there arises a problem that the waste in the primary combustion chamber becomes wet and the incineration efficiency becomes poor.

In addition, among the methods of treating sewage sludge and the like, it is treated by a method such as drying, incineration, landfill, etc., but a high concentration of exhaust gas is generated during the drying process. In order to prevent such exhaust gas from flowing into the atmosphere, Condensate wastewater of high concentration is generated during cooling. Therefore, facilities for treating such high concentration of condensate wastewater are required.

Patent Registration No. 1056662 (Aug. 12, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a method and apparatus for reducing the temperature of a combustion gas and reducing the production of nitrogen oxides by using a high concentration sewage sludge condensate wastewater, Which is capable of reducing the generation of clinker in the secondary combustion chamber and reducing the generation of nitrogen oxides by spraying the secondary sludge between the secondary combustion chamber and the secondary combustion chamber.

According to an aspect of the present invention, there is provided a high concentration condensed wastewater treatment system comprising: a dryer for drying sewage sludge; A condenser for cooling exhaust gas at a high concentration generated in drying the sewage sludge in the dryer; An incineration process liquid storage tank in which condensed wastewater of high concentration cooled in the condenser is supplied; A urea water supply unit for supplying urea water to the incineration process liquid storage tank; And a waste incinerator into which the incineration process liquid of the incineration process liquid storage tank is injected, wherein the incinerator has a primary combustion chamber in which waste is charged and the waste is primarily combusted; A secondary combustion chamber disposed above the primary combustion chamber so as to be connected to the primary combustion chamber for secondary combustion of the primary combustion product generated when the waste is combusted in the primary combustion chamber; An incinerating process liquid jetting port provided at a connecting portion between the primary combustion chamber and the secondary combustion chamber for injecting and discharging the incineration process liquid of the incineration process liquid storage tank between the primary combustion chamber and the secondary combustion chamber, A nozzle having an air ejection opening for ejecting air between the secondary combustion chambers to form an air curtain; A pump connected to the nozzle so that the incineration process solution of the incineration process liquid storage tank can be sent to the nozzle; And an air compressor connected to the nozzle so as to pressurize the air with the nozzle.

Here, it is preferable that the air injection port of the nozzle is provided so as to surround the injection port of the incineration process.

It is preferable that the nozzle has a jetting portion exposed to the inside of the incinerator in a curved shape corresponding to the inner surface of the incinerator, and the jetting port and the air jetting port are disposed in the jetting portion.

In addition, it is preferable that the plurality of burning process liquid ejection openings and the plurality of air ejecting openings provided in the nozzle are arranged alternately one on the left and one on the right.

It is preferable that the urea water supply unit controls the amount of urea water supply by controlling the concentration of nitrogen oxides on the exhaust gas of the waste incineration apparatus measured by the chimney automatic meter.

The high concentration sludge condensate wastewater treatment system according to the present invention is characterized in that silver is injected between a primary combustion chamber and a secondary combustion chamber of an incinerator by injecting an incineration process liquid with a nozzle, . These air curtains allow the air in the primary combustion chamber to remain in the primary combustion chamber sufficiently to increase the waste combustion efficiency in the primary combustion chamber.

In addition, the high concentration sludge condensed wastewater treatment system of the present invention can effectively treat condensate wastewater by using high concentration of condensed wastewater generated in the process of condensing high concentration exhaust gas generated in a sewage sludge dryer as an incineration process solution.

Particularly, since condensate wastewater and urea water are mixed and used as an incineration process solution, the amount of urea water used can be reduced compared with the case where only urea water is used in the past, and the cost can be reduced.

In addition, since the waste incinerator is sufficiently mixed with the air passing through the air curtain in the process of entering the secondary combustion chamber such as the combustion gas generated in the primary combustion chamber, the combustion efficiency of the primary combustible material is improved in the secondary combustion chamber. In addition, since the high-temperature combustion gas rising from the primary combustion chamber to the secondary combustion chamber passes uniformly through the air curtain while being evenly mixed with the incineration process liquid, the generation of nitrogen oxides is suppressed and the problem of generating clinker in the secondary combustion chamber is reduced .

In addition, since waste incinerators eject the incineration process liquid at the liquid injection port of the nozzle, and air is injected from the air injection port (secondary air), the air injected from the air injection port serves to cool the nozzle do. Therefore, there is no need for a separate cooling device for cooling the nozzle for spraying the incineration process liquid as in the conventional case.

1 is a schematic view of a high concentration sludge condensate wastewater treatment system according to an embodiment of the present invention.
Fig. 2 schematically shows the waste incineration plant of Fig.
3 is a cross-sectional view of the connection between the primary combustion chamber and the secondary combustion chamber of the incinerator of the waste incineration apparatus shown in FIG.
4 is a cross-sectional view illustrating a connection between a primary combustion chamber and a secondary combustion chamber of an incinerator of a waste incineration apparatus according to another embodiment of the present invention.
5 is a cross-sectional view illustrating a connection between a primary combustion chamber and a secondary combustion chamber of an incinerator of a waste incineration apparatus according to another embodiment of the present invention.

Hereinafter, a high concentration sludge condensate wastewater treatment system according to the present invention will be described in detail with reference to the drawings.

1 schematically shows a high concentration sludge condensate wastewater treatment system according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the connection between the primary combustion chamber and the secondary combustion chamber of the incinerator shown in Fig.

1 to 3, a highly concentrated condensed wastewater treatment system according to an embodiment of the present invention includes a drier 10 for drying sewage sludge, a condenser 20 for cooling exhaust gas at a high concentration generated in the drier 10 ), A cabbage pit (30) for collecting condensed wastewater cooled in the condenser (20), an incineration process liquid storage tank (40) for storing an incineration process solution containing condensate wastewater of the drainage pit (30) A urea water supply unit 50 for replenishing the urea water with the storage tank 40, and a waste incineration apparatus 100 for incinerating the waste.

In the dryer (10), the collected sewage sludge is dried and treated. That is, the sewage sludge having a water content of approximately 83% is transported to the tanker, stored in a sludge storage tank (not shown), and supplied to the dryer 10 through the feed pump.

In the dryer 10, the moisture is dried to a moisture content of 10% or less by using the waste heat of the waste incineration apparatus 100. In this process, a high concentration of exhaust gas is generated.

The high concentration of exhaust gas generated in the drying process of the sewage sludge in the dryer 10 is transferred to the condenser 20 installed in the discharge line 13. [

The condenser 20 is an indirect condenser, and a high concentration of condensed water wastewater (T-N: 1,200 mg / L, hereinafter referred to as "condensed water wastewater") is generated by cooling the exhaust gas at a high concentration as an indirect condenser. The condensate wastewater generated by cooling in the condenser 20 is collected in the drainage pit 30.

The condensate wastewater collected in the drainage pit 30 is pumped to the incineration process liquid storage tank 40 by the transfer pump 35 installed in the condensate wastewater supply line 37 and is supplied and stored.

The incineration process liquid storage tank 40 stores the condensed wastewater transferred by the above method and the incineration process solution in which the urea water supplied from the urea water supply unit 50 is diluted.

The urea water supply unit 50 includes a urea water tank 51, a urea water supply pump 53, and a urea water supply line 55. The urea water supply line 55 connects the urea water tank 51 and the process liquid storage tank 40. The urea water supply pump 53 is provided in the urea water supply line 55 to supply the urea water of the urea water tank 51 to the incineration process liquid storage tank 40. At this time, the urea water supply amount in the urea water supply unit 50 is controlled in proportion to the nitrogen oxide concentration on the exhaust gas measured by the automatic chimney meter 70. Therefore, the ammonia nitrogen component of the process solution containing the condensed wastewater can be maintained at a certain concentration and sprayed into the incinerator. That is, when the NOx is detected more than the reference value, the supply amount of the urea water is increased, and if the NOx detection amount is less than the reference value, the supply amount of the urea water is controlled to be proportionately controlled.

The waste incinerator 100 includes an incinerator 110 in which waste is injected and incinerated first and then incinerated and a nozzle installed in the middle of the incinerator 110 to supply the incineration process liquid and air into the incinerator 110 A pump 130 for supplying an incineration process liquid to the nozzle 120, and an air compressor 140 for supplying air to the nozzle 120. Here, the incineration process liquid may be various liquids that are injected into the incinerator 110 to lower the temperature of the combustion gas or cause a catalytic reaction in the combustion gas to reduce the production of nitrogen oxides. In the embodiment of the present invention As described above, it is preferable to use a process solution that dilutes the condensate wastewater and urea water generated in the drying and condensation process of the sewage sludge.

The incinerator 110 is for incinerating the waste, and includes a lower primary combustion chamber 111 and an upper secondary combustion chamber 112. The waste is firstly combusted in the primary combustion chamber 111, and the primary combustible material such as combustion gas generated by combustion of the waste in the primary combustion chamber 111 is secondarily combusted in the secondary combustion chamber 111.

The primary combustion chamber 111 is disposed below the incinerator 110 and primarily burns the spent waste. The waste injection unit 113 is connected to one side of the primary combustion chamber 111. Waste can be introduced into the primary combustion chamber 111 through the waste input portion 113. An incinerator discharge portion 114 is connected to the other side of the primary combustion chamber 111. The solid incineration products that have been burned in the primary combustion chamber 111 can be discharged through the incineration water discharge section 114. The bottom surface of the primary combustion chamber 111 is disposed downwardly from the waste input portion 113 toward the incineration water discharge portion 114. A primary combustion air supply zone 115 is provided on the bottom surface side of the primary combustion chamber 111 and air can be supplied to the primary combustion chamber 111 through the primary combustion air supply zone 115.

The secondary combustion chamber 112 is disposed above the primary combustion chamber 111 so as to be connected to the primary combustion chamber 111. The secondary combustion chamber 112 secondary combusts the primary combustible material generated by combustion of the waste in the primary combustion chamber 111. The secondary combustion chamber 112 is provided with an exhaust gas discharge portion 116 for discharging exhaust gas resulting from combustion of waste. The exhaust gas discharge portion 116 may be connected to an exhaust gas filtering device (gas phase and particulate matter removal device) capable of filtering the exhaust gas.

A water pipe for recovering waste heat from the waste combustion heat may be installed on the wall of the incinerator 110 surrounding the primary combustion chamber 111 and the secondary combustion chamber 112. A refractory capable of withstanding high temperatures is disposed on the inner surface of the incinerator 110 to protect the water pipe.

The nozzle 120 is installed in the incinerator 110 and injects the incineration process liquid and air into the incinerator 110. The nozzle 120 is connected to the pump 130 so as to inject the incineration process solution. The pump 130 pumps the incineration process solution to the nozzle 120 through the incineration process solution supply pipe 131. The nozzle 120 is connected to the air compressor 140 so as to inject air. The air compressor 140 pumps air to the nozzle 120 through the air supply pipe 141.

The nozzle 120 is disposed between the primary combustion chamber 111 and the secondary combustion chamber 112 of the incinerator 110, that is, the portion where the primary combustion chamber 111 and the secondary combustion chamber 112 are connected. In the conventional incinerator, the incineration process liquid such as urea water reducer and waste leachate was injected directly into the secondary combustion chamber. In this case, the clinker is likely to be formed on the wall surface of the secondary combustion chamber, the deterioration of the wall surface of the secondary combustion chamber is promoted, the combustion efficiency in the secondary combustion chamber is lowered, and the refractory is detached due to deterioration of the wall and the water tube is exposed to the secondary combustion chamber . The nozzle 120 may be disposed at the connection portion between the primary combustion chamber 111 and the secondary combustion chamber 112 so that the injection region of the incineration process liquid may flow between the primary combustion chamber 111 and the secondary combustion chamber 112 The problem as in the prior art can be solved.

The nozzle 120 has a jetting portion 121 exposed to a connection space between the primary combustion chamber 111 and the secondary combustion chamber 112 inside the incinerator 110. The jetting section 121 is provided with an incinerating process liquid jetting section 122 for jetting the incineration process liquid and an air jetting port 124 for jetting air. The incinerating process liquid injecting section 122 is projected to the inside of the incinerator 110 more than the portion where the air injection port 124 is formed on the injecting section 121 and the incinerating process liquid injecting opening 123 is formed in the incinerating process liquid injecting section 122 Respectively.

The air jet opening 124 is disposed so as to surround the incinerating process liquid jetting section 122. The air injection port 124 injects air around the incineration process liquid injection port 123 so that the incineration process liquid injected from the incineration process liquid injection port 123 is uniformly mixed in the air injected from the air injection port 124, 111) and the secondary combustion chamber (112). Air is supplied into the incinerator 110 through the air injection port 124 of the nozzle 120 so that a secondary combustion air supply zone 117 is formed at the connection between the primary combustion chamber 111 and the secondary combustion chamber 112 . Air can be supplied evenly from the lower side of the secondary combustion chamber 112 to the secondary combustion chamber 112 through the secondary combustion air supply zone 117.

 The air injected through the air injection port 124 forms an air curtain C1 between the primary combustion chamber 111 and the secondary combustion chamber 112. The air curtain (C1) allows the air in the primary combustion chamber (111) to sufficiently stay in the primary combustion chamber (111), thereby improving the combustion efficiency in the primary combustion chamber (111). In addition, primary combustion products such as combustion gases generated in the primary combustion chamber 111 are sufficiently mixed with the air while passing through the air curtain C1, thereby improving the combustion efficiency in the secondary combustion chamber 112. Also, the high-temperature combustion gas rising from the primary combustion chamber 111 to the secondary combustion chamber 112 can be cooled while being mixed with the incineration process liquid while passing through the air curtain C1. Therefore, the generation of nitrogen oxides in the secondary combustion chamber 112 is suppressed, and the problem of generating clinker in the secondary combustion chamber 112 is reduced.

In the waste cautery apparatus 100 according to the present invention, the secondary air injected through the air injection port 124 cools the incinerating process liquid spraying unit 122. Therefore, there is no need for a separate cooling device for cooling the nozzle for spraying the incineration process liquid as in the conventional case.

Hereinafter, the operation of the waste incineration apparatus 100 having the above-described structure will be described.

Air is supplied to the primary combustion chamber 111 through the primary combustion air supply zone 115 when the waste is introduced into the primary combustion chamber 111 of the incinerator 110 through the waste input portion 113, The waste is firstly combusted in the combustion chamber 111. The waste material is burnt and the remaining combustible material is transferred to the incineration water discharge part 114 on one side of the primary combustion chamber 111 and discharged through the incineration water discharge part 114. In addition, the high-temperature primary combustible material such as the combustion gas generated by combustion of the waste in the primary combustion chamber 111 rises toward the secondary combustion chamber 112.

On the other hand, when the waste is firstly combusted in the primary combustion chamber 111, the incineration process liquid and air are injected between the primary combustion chamber 111 and the secondary combustion chamber 112 through the nozzle 120, An air curtain C1 containing an incineration process liquid is formed between the secondary combustion chamber 111 and the secondary combustion chamber 112. [ The air curtain C1 allows the air to be supplied to the primary combustion chamber 111 from the primary combustion air supply zone 115 to sufficiently stay in the primary combustion chamber 111 to improve the waste combustion efficiency in the primary combustion chamber 111 Increase.

The primary combustible material generated in the primary combustion chamber 111 flows into the secondary combustion chamber 112 through the air curtain C1. The combustion efficiency of the secondary combustion chamber 112 is improved by flowing the primary combustible material into the secondary combustion chamber 112 while being mixed with air while passing through the air curtain C1. Also, the high-temperature combustion gas rising from the primary combustion chamber 111 to the secondary combustion chamber 112 can be evenly cooled while being mixed with the incineration process liquid while passing through the air curtain C1. Thus, the generation of nitrogen oxides in the secondary combustion chamber 112 is suppressed and the problem of generating clinker is reduced.

The exhaust gas remaining after the primary combustion in the secondary combustion chamber 112 is burned secondarily is discharged through the exhaust gas discharge portion 116 on one side of the secondary combustion chamber 112.

Further, in order to reduce high-temperature corrosion and nitrogen oxides, it is necessary to keep the temperature of the incinerator 110 constant. To this end, an incinerating process liquid flow rate controller 80 for controlling the supply amount of the incineration process liquid is further provided. The incineration process fluid flow control unit 80 includes a recovery line 81 and a flow control valve 83. The flow control valve 83 controls the flow of the incineration process liquid that has passed through the pressure feeding pump 130, To the recovery line (81) for recovering the waste water to the waste water treatment plant (40). The degree of opening and closing of the flow control valve 83 is proportionally controlled in accordance with the temperature condition inside the incinerator 110 so that the amount of the incineration process liquid is adjusted through the injector 120, The temperature can be kept constant.

Further, by controlling the urea water supply amount in the urea water supply unit 50 in proportion to the concentration of nitrogen oxides on the exhaust gas measured by the automatic choke measuring apparatus 70 in the incinerator 110, the ammonia concentration of the high concentration exhaust gas wastewater It becomes possible to control the spraying of the nitrogen component at a constant concentration.

As described above, according to the high concentration sludge condensed wastewater treatment system of the present invention, the condensed wastewater of high concentration is injected into the incinerator 110 as the incineration process solution to perform stable wastewater treatment. In addition, by replacing the conventional wastewater with condensate wastewater that used conventional water as dilution water for urea water, it is possible to reduce stable nitrogen oxides and chemicals (urea water) when mixed with ammonia nitrogen (NH3-N) There is an advantage that usage can be reduced.

FIG. 4 shows a waste incinerator 200 according to another embodiment of the present invention. Specifically, FIG. 4 illustrates a connection between a primary combustion chamber and a secondary combustion chamber of an incinerator.

The waste incinerating apparatus 200 shown in FIG. 4 is a modification of the structure of the nozzle 210 as compared with the waste incinerating apparatus 100 described above.

The nozzle 210 shown in FIG. 4 is connected to the pump 130 (see FIG. 2) through the incineration process liquid supply pipe 131 and to the air compressor 140 (see FIG. 2) through the air supply pipe 141. The nozzle 210 has a jetting portion 211 exposed to the inside of the incinerator 110. The jetting section (211) is formed in a bent shape corresponding to the inner surface of the incinerator (110). The jetting section (211) is provided with a plurality of incineration process liquid jetting ports (212) for jetting the incineration process liquid and a plurality of air jetting ports (213) for jetting air. When a plurality of incineration process liquid ejection openings 212 and a plurality of air ejection openings 213 are disposed in the bent portion 211 corresponding to the inner surface of the incinerator 110 as described above, And the angle of ejection of the air ejection openings 213 can be varied. Therefore, the incineration process liquid and air can be more uniformly injected into the space between the primary combustion chamber 111 and the secondary combustion chamber 112, and a more uniform air curtain C2 can be formed.

As shown in the drawing, the incineration process liquid ejection port 212 and the air ejection port 213 are arranged alternately one on the left and one on the right. When the incineration process liquid injection port 212 and the air injection port 213 are alternately arranged, the incineration process liquid injected from the incineration process liquid injection port 212 can be evenly mixed in the air injected from the air injection port 213, It is possible to more evenly distribute the incineration process liquid in the air curtain C2 formed by the incineration process. Of course, the number of the incineration process liquid ejection openings 212, the number of the air ejection openings 213, and the arrangement structure may be variously changed on the ejection section 211.

5 is a cross-sectional view illustrating a connection between a primary combustion chamber and a secondary combustion chamber of an incinerator of a waste incineration apparatus according to another embodiment of the present invention.

The waste incinerator 300 shown in Fig. 5 has a nozzle 310 having another structure.

The nozzle 310 shown in FIG. 5 is connected to the pump 130 (see FIG. 2) through the incineration process liquid supply pipe 131 and to the air compressor 140 (see FIG. 2) through the air supply pipe 141. The nozzle 310 has a jetting section 311 exposed to the inside of the incinerator 110. The jetting section 311 is formed in a bent shape corresponding to the inner surface of the incinerator 110. The jetting section 311 is provided with an incinerating process liquid jetting section 312 for jetting the incineration process liquid and an air jetting port 314 for jetting air. The incinerating process liquid spraying section 312 protrudes inside the incinerator 110 more than the portion where the air jetting port 314 is formed on the jetting section 311 and the incinerating process liquid jetting port 313 is formed in the incinerating process liquid jetting section 312 Respectively. By disposing the incineration process liquid ejection port 313 and the air ejection port 314 in the bent portion 311 corresponding to the inner surface of the incinerator 110 as described above, the ejection angle of the incineration process liquid ejection ports 313 It is possible to vary the injection angle of the air ejection holes 314. Therefore, the incineration process liquid and air can be more uniformly injected into the space between the primary combustion chamber 111 and the secondary combustion chamber 112, and a more uniform air curtain C3 can be formed.

As shown in the drawing, the air injection ports 314 are arranged so as to surround the incineration process liquid injection portion 312 so that the air injection port 314 injects air around the plurality of incineration process liquid injection ports 313, The incineration process liquid injected from the process liquid injection ports 313 can be evenly mixed in the air injected from the air injection holes 314 and spread evenly in the space between the primary combustion chamber 111 and the secondary combustion chamber 112. Of course, the number of the incineration process liquid ejection openings 313 and the number of the air ejection openings 314, and the arrangement structure may be variously changed on the ejection section 311.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited to those described and illustrated above.

For example, although one nozzle is disposed between the primary combustion chamber 111 and the secondary combustion chamber 112 of the incinerator 110, the primary combustion chamber 111 and the secondary combustion chamber 112 are shown in the figure, The number of nozzles provided in the connection portion between the nozzle and the nozzle may be variously changed.

Also, the number of process liquid ejection openings and air ejection openings provided in the nozzle is not limited to the illustrated one, and may be changed to one or more various numbers.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will appreciate that numerous modifications and variations can be made in the present invention without departing from the spirit and scope of the appended claims.

10: dryer 20: condenser
30: drainage pit 40: incineration process liquid storage tank
50: urea water supply unit 70: chimney automatic meter
80: Incineration process liquid recovery unit
100, 200, 300: waste incinerator 110: incinerator
111: primary combustion chamber 112: secondary combustion chamber
113: Waste input part 114: Incineration water discharge part
115: Primary combustion air supply zone 116: Exhaust gas outlet
117: secondary combustion air supply zone 120, 210, 310: nozzle
121, 211, 311: jetting section 122, 312: incinerating process liquid jetting section
123, 212, 313: Incinerating process liquid jetting port 124, 213, 314: Air jetting port
130: Pump 131: Incineration process liquid supply pipe
140: air compressor 141: air supply pipe
C1, C2, C3: Air curtain

Claims (5)

A dryer for drying the sewage sludge;
A condenser for cooling exhaust gas at a high concentration generated in drying the sewage sludge in the dryer;
An incineration process liquid storage tank in which condensed wastewater of high concentration cooled in the condenser is supplied;
A urea water supply unit for supplying urea water to the incineration process liquid storage tank;
And a waste incinerator for burning and discharging the charged waste, and a waste incineration device into which the incineration process liquid of the incineration process liquid storage tank is injected,
Wherein the waste incinerator has:
A primary combustion chamber in which waste is charged and the waste is primarily combusted;
A secondary combustion chamber disposed above the primary combustion chamber so as to be connected to the primary combustion chamber for secondary combustion of the primary combustion product generated when the waste is combusted in the primary combustion chamber;
An incinerating process liquid jetting port provided at a connecting portion between the primary combustion chamber and the secondary combustion chamber for injecting and discharging the incineration process liquid of the incineration process liquid storage tank between the primary combustion chamber and the secondary combustion chamber, A nozzle having an air ejection opening for ejecting air between the secondary combustion chambers to form an air curtain;
A pump connected to the nozzle so that the incineration process solution of the incineration process liquid storage tank can be sent to the nozzle; And
And an air compressor connected to the nozzle so as to pressurize the air with the nozzle,
The nozzle
A jetting portion protruding in a curved shape as a connection space between the primary combustion chamber and the secondary combustion chamber and having an air ejection port for ejecting compressed air; and an ejection portion protruding from the ejection portion and surrounded by the air ejection port, And an incinerating process liquid ejection port for ejecting the liquid,
Wherein the incinerating process liquid ejection port is cooled by air ejected from the air ejection port,
The formed air curtain is mixed with the air passing through the primary combustible material containing the combustion gas generated in the primary combustion chamber to increase the combustion efficiency in the secondary combustion chamber and to increase the combustion efficiency of the primary combustion chamber to the secondary combustion chamber Characterized in that the high-concentration sludge condensate wastewater treatment system comprises a high-temperature sludge condensation wastewater treatment system, wherein the high-concentration sludge condensation wastewater treatment system is cooled while being mixed with the incineration process solution while passing through a high-temperature combustion gas. delete delete delete The method according to claim 1,
Wherein the urea water supply unit regulates the amount of urea water supplied in proportion to the concentration of nitrogen oxides on the exhaust gas of the waste incineration apparatus measured by the automatic chimney meter.

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