KR20210012225A - Efficient drying system of living and flammable waste - Google Patents

Abstract

The present invention relates to an efficient drying system of domestic and flame-retardant wastes, capable of reducing the moisture content of the flame-retardant waste. The efficient drying system of domestic and flame-retardant wastes of the present invention comprises: an incinerator (200); a transfer case (610); a rotation shaft (610c); a transfer screw (620) formed on an outer circumferential surface of the rotation shaft so that the incinerator ash introduced into an incinerator ash inlet port (610a) can be transferred in the direction of an incinerator ash outlet port (610b); a cooler (600); a rotation drum (410); a discharge pipe (450); and a mixer compression machine (500).

Description

Efficient drying system of living and flammable waste}

The present invention relates to an efficient drying system for living and flame-retardant waste, and more particularly, in order to mix and incinerate flame-retardant wastes such as household waste and food waste in one system, life and flame retardancy that lowers the moisture content contained in the flame-retardant waste. It relates to an efficient drying system of waste.

Urban waste is waste discharged from the city, mainly household waste and commercial waste, including urban sewage treatment sludge, street tree waste, and construction waste.

The generation rate of urban waste is increasing year by year due to the mass production trend and population increase due to the recent industrial development, and the types of urban waste are also very diversified.

These various municipal wastes can be largely divided into combustible wastes (hereinafter referred to as'household wastes') and food wastes, sewage sludge, livestock manure, and other flame-retardant wastes, roughly 80-85% of all municipal wastes, and flame retardant. Waste accounts for about 15-20%.

These household wastes and flame-retardant wastes are generally collected separately and incinerated in different systems.

This is because the flame retardant waste has a moisture content of about 50 to 90%.Since the leachate generated from the flame retardant waste can pollute the environment such as soil and water, a drying process, a process that reduces the moisture content before incineration, is essential. It must be incinerated and landfilled after it has been rough.

As such, household waste and flame-retardant waste had different properties and had to be separately incinerated and buried in different systems.This is because when the incinerator of household waste is mixed and incinerated, it is incomplete due to the high moisture content of the fire-retardant waste. This is because large amounts of dioxin and air pollutants are generated by combustion.

For this reason, conventional household waste and flame-retardant waste have to be treated separately, and when both wastes are treated separately, various problems as follows occur.

First, since separate facilities and places are required for household waste and flame-retardant waste, this has a problem of increasing the overall cost of waste treatment facilities.

Second, the domestic waste is incinerated in the incinerator and discharged as incineration ash. As a result, the heat and unburnt unburned powder retained by the incineration ash are discarded as it is, thereby reducing energy efficiency and combustion efficiency.

Third, in order to dry the flame-retardant waste, a separate heating means is required, and there is a problem that a separate raw material for heating must be supplied.

The matters described as the above-described background art are only for enhancing understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art.

An object of the present invention is to provide an efficient drying system for living and flame-retardant wastes that lowers the moisture content of the flame-retardant waste so that the domestic waste and the flame-retardant waste can be simultaneously incinerated in order to solve such conventional problems.

An efficient drying system of living and flame-retardant waste according to the present invention for achieving this object is an incinerator; A transfer case having an incineration ash inlet at one side and an incineration ash outlet at the other side so that the household waste incinerator transferred from the incinerator can be introduced; A rotation shaft rotatably mounted inside the transfer case;

A transfer screw formed on the outer circumferential surface of the rotation shaft so that the incineration material introduced into the incineration material inlet port can be transferred in the direction of the incineration material outlet port; A cooler including a cooling unit including a cooling water spray nozzle mounted on one side of the incinerator inlet and an inner water cooling chamber penetrating the inside of the rotating shaft so as to cool the incineration material flowing into the incineration material inlet, the transfer screw, and the transfer case. ; One side is provided with a waste gas inlet pipe through which the high-temperature exhaust gas generated from the incinerator flows in and a flame-retardant waste inlet pipe through which the flame-retardant waste transferred from the flame-retardant waste storage is introduced, and an inorganic ceramic coating layer is formed on the inner side thereof, and the rotation A rotating drum in which a plurality of guide lifters bent in the rotation direction of the drum are formed at predetermined intervals in the direction of the inner circumferential surface thereof; A discharge pipe provided on the other side of the rotating drum to separately discharge dried flame-retardant waste and dry exhaust gas; A supply unit into which household waste incinerator supplied from the cooler and dried flame-retardant waste supplied from the discharge pipe are separately input; The supply unit is provided on one side, and the mixing case is provided with a mixture discharge port on the other side, the first and second rotating shafts are rotatably installed inside the mixing case and are arranged parallel to each other, and the household waste and incinerated incinerated while interacting with each other are dried. A mixing compression unit including first and second compression plates protruding from the first and second rotating shafts so as to mix, press, and transport the flame-retardant waste; Includes; a power source for providing power to the mixed compression unit; including a mixed press.

A first extinguishing water spray nozzle is mounted on one side of the rotating drum, a second extinguishing water spray nozzle is mounted on one side of the discharge pipe, and the first extinguishing water spray nozzle and the second extinguishing water spray nozzle are operated in an emergency. To do.

The heat quantity of the dry exhaust gas discharged from one side of the discharge pipe is used to heat the water of the waste heat boiler.

The present invention can obtain the following effects due to the above-described technical configuration.

First, the moisture content of the flame-retardant waste is reduced, and there is an advantage that domestic waste and flame-retardant waste can be treated in one incineration system.

Second, there is an advantage in that the energy efficiency of the system is improved by drying the flame-retardant waste by using the waste heat of the exhaust gas generated from the incinerator.

Third, there is an advantage of reducing fuel costs for drying flame retardant waste.

Fourth, it is possible to repeatedly reduce the moisture content of the flame-retardant waste by using the high temperature of the household waste incineration material injected into the mixing press, thereby improving the energy efficiency of the entire system.

1 is an overall configuration diagram of a living and flame-retardant waste mixed incineration system to which the present invention is applied,
2 is a side view of an incinerator that is an essential part of a mixed incineration system for living and flame retardant waste to which the present invention is applied,
3 is a perspective view of a fixed grate and a cooling water supply pipe of an incinerator, which is an essential part of a living and flame retardant waste mixed incineration system to which the present invention is applied;
4 is a view showing an installation state of a driving grate of an incinerator, which is an essential part of a mixed incineration system for living and flame retardant waste to which the present invention is applied;
5 is a view showing an installation state of a cooling water supply pipe of an incinerator, which is an essential part of a living and flame retardant waste mixed incineration system to which the present invention is applied;
6 is a view showing a flame-retardant waste storage and an unmanned automatic quantitative feeder of waste, which is an essential part of a living and flame-retardant waste mixed incineration system to which the present invention is applied
7 is a view showing a nozzle device dedicated to a living and flame-retardant waste mixing incinerator that transfers and sprays combustible gas and dehydration filtrate to the incinerator, which is an essential part of the living and flame-retardant waste mixed incineration system to which the present invention is applied.
8 is an efficient drying system of living and flame-retardant waste of the present invention,
9 is a view showing an incineration ash cooling tank for use as a flame retardant waste combustion accelerator that is an essential part of the living and flame retardant waste mixed incineration system to which the present invention is applied;
10 is a side view of a mixing compactor that is an integral part of the present invention,
11 is a front view of a mixing compactor that is an integral part of the present invention,
12 is a cross-sectional view taken along the AA direction of FIG. 11;
13 is a plan view of a mixing press that is an integral part of the present invention,
14 is a view showing an air supply system for combustion, which is an essential part of a mixed incineration system for living and flame retardant waste to which the present invention is applied
15 is a cross-sectional view taken along the AA direction of FIG. 14;
16 is a flow chart of a method for incineration of living and flame retardant wastes to which the present invention is applied,
17 is a flow chart of one main part of a method for incineration of mixed and incineration of living and flame-retardant waste to which the present invention is applied,
18 is a view showing a semi-dry reaction tower that is an essential part of a mixed incineration system for living and flame retardant waste to which the present invention is applied.

Hereinafter, in order to describe a drying system for mixing and incineration of living and flame-retardant waste according to a preferred embodiment of the present invention with reference to the accompanying drawings, and a preferred embodiment of the present invention, mixing of living and flame-retardant waste to which the present invention is applied The incineration system and its method will be described.

1 is a block diagram of a living and flame retardant waste mixed incineration system to which the present invention is applied. As shown in FIG. 1, the mixed incineration system for living and flame-retardant waste includes a household waste storage 100, an incinerator 200, a flame-retardant waste storage 300, and a dryer 400.

The household waste storage 100 is buried underground, but it is preferable that the upper end of the waste storage 100 is buried so that it protrudes from the ground by about 30 cm. To visually check the amount of household waste stored in the household waste storage 100, a see-through port (not shown) may be formed on one side thereof, and the household waste stored in the household waste storage 100 is unmanned automatic waste determination It is transferred to the incinerator 200 by the feeder 10. It is preferable that the amount of household waste to be transferred is measured in advance in consideration of the state of the incinerator 200 and the like.

With reference to FIGS. 2 to 5, an incinerator, which is an essential part of the efficient drying system for living and flame-retardant waste of the present invention, will be described.

The incinerator 200 receives household waste from a household waste storage (refer to FIG. 1) and serves to incinerate it, and appropriately determines the structure and material of the grate in consideration of incineration efficiency.

The incinerator of the mixed incineration system for household and flame retardant waste has a water-cooled grate with a four-stage structure.

2 and 3, the water-cooled grate having a four-stage structure includes a lower water cooling jacket 210 forming the bottom of the incinerator, a fixed grate 220, a driving grate 230, and a cooling pipe 240. Include.

The lower water cooling kit 210 is formed to be inclined. At one side of the inclined lower water cooling jacket 210, a fixed grate 220 is fixedly installed in a horizontal direction, and this fixed grating 220 has a four-stage structure.

That is, the fixed grating 220 is a first fixed grating 222, a second fixed grating 224, a third fixed grating 226 and a first fixed grating installed at regular intervals in the vertical direction of the inclined lower water cooling jacket 210. It includes 4 fixed grate 228, and this fixed grate 220 is made of refractory material.

In addition, the first fixed grate 222, the second fixed grate 224, the third fixed grate 226, and the fourth fixed grate 228 have a stepped structure with respect to the inclined lower water cooling jacket 210, This is to divide the incineration process into 4 stages.

The incineration material is sequentially moved to the first fixed grate 222, the second fixed grate 224, the third fixed grate 226 and the fourth fixed grate 228 by driving of the driving grate 230 to be described later. Afterwards, it is finally discharged from the incinerator 200.

In more detail, when household waste (or a mixture of household waste and flame retardant waste) is introduced into the incinerator 200, such household waste moves to one side of the inclined lower water cooling jacket 210 of the incinerator 200. .

The section from the upper end of the inclined lower water cooling jacket 210 to the first fixed grate 222 is a section D1 in which household waste is preliminarily dried by radiant heat inside the incinerator. The domestic waste sufficiently dried while passing through the preliminary drying section D1 is accumulated in the first fixed grate 222, and is moved to the next section by the driving grate 230, which will be described later.

The section from the first fixed grate 222 to the second fixed grate 224 is a re-drying and primary combustion section (D2), and re-drying household waste that has not been sufficiently dried in the pre-drying section (D1) is Of course, it is a section in which household waste is primarily burned using radiant heat inside the incinerator. In this re-drying and primary combustion section (D2), household wastes in which the re-drying and combustion processes have been sufficiently advanced are also moved to the next section by the driving grate 230 to be described later.

The section from the second fixed grate 224 to the third fixed grate 226 is a secondary combustion section D3 in which the combustion process is in full swing.

In the secondary combustion section (D3), most of the household waste is incinerated, and the incinerated household waste is accumulated in the third fixed grate 226, and this incinerator is moved to the next section by the driving grate 230 again. .

The section from the third fixed grating 226 to the fourth fixed grating 228 is a post combustion section D4. In other words, the post-combustion section (D4) is a section in which household waste that has not been burned in the secondary combustion section (D3) is completely burned, and the incinerator completely burned through the post-combustion process (D4) is It is discharged from 200.

Hereinafter, a fixed grate will be described with reference to FIGS. 2 and 4.

2 and 4, the driving grate 230 is in a horizontal direction (parallel to the fixed grating) on one side of the inclined lower water cooling jacket 210 to push out the waste accumulated in the fixed grate 220. It is installed to be movable.

The driving grate 230 is a first driving grate 232, a second driving grate 234, a third driving grate 236 so as to correspond to the first, second, third, and fourth fixed gratings 222,224,226,228, and It is preferable to include a fourth driving grate 238.

That is, the first, second, third, and fourth fixed gratings 222, the second fixed grating 224, the third fixed grating 226, and the fourth fixed grating 228 have a stepped structure. A first driving grate 232, a second driving grate 234, a third driving grate 236 and a fourth driving grate 238 corresponding to the grates 222,224,226,228 are installed. That is, from the top of the inclined lower water cooling jacket 210, the first driving grate 232, the first fixing grate 222, the second driving grate 234, the second fixing grate 234, the third driving grate ( 236), the third fixed grate 226, the fourth driving grate 238, and the fourth fixed grate 228 is arranged in the order.

Therefore, when the household waste pre-dried in the pre-drying section D1 is sufficiently accumulated in the first fixed grate 222, the first driving grate 232 moves and pushes out the pre-dried household waste, and the pre-dried household waste Silver is accumulated in the second fixed grate 224 after being re-dried and burned while passing through the re-drying and primary combustion section D2.

In addition, when the re-dried and primary burned household waste is sufficiently accumulated in the second fixed grate 224, the second driving grate 234 is operated to push it out, and the household waste is secondarily burned and then the third fixed again. It is accumulated in the grate 226, and if the incineration ash is accumulated in the fourth fixed grate 228 again after secondary combustion, the incineration ashes can be discharged to the incineration ash outlet 200a according to the operation of the fourth driving grate 238.

The first, second, third, and fourth driving gratings 232, 234, 236, and 238 have the same configuration, and the specific configuration will be described with the first driving grate 232 as an example.

The first driving grate 232 is a cylinder 232a fixedly installed outside the incinerator 200, coupled with the cylinder 232a, and a cylinder rod 232b passing through one side of the lower water cooling jacket 210 and the cylinder rod It is coupled to the end of (232b), including a push plate (232c) for pushing the incineration material accumulated on the fixed grate 220 when the cylinder rod (232b) is moved, and a push plate inside one side of the penetrating lower water cooling jacket (210) A guide rail 212 may be installed to prevent separation of the 232c.

In addition, the moving distance of the first driving grate 232 is preferably the same as the distance in which the first fixed grate 222 protrudes from one side of the lower water cooling jacket 210.

The fixed grate 220 is constructed as a refractory material on the inner surface of the lower water cooling jacket 210, and functions to prevent the unburned powder or fine waste from moving to the next section in a state in which drying or combustion is not completed. This is to minimize the amount of incineration ash discharged from the incinerator 200 through the incineration ash outlet (200a), and to meet the facility installation standard for reduction of ignition.

In addition, the combustion of waste proceeds not only on the fixed grate 220 but also on the cooling water supply pipe 240, and the burnt ash after combustion is vertically dropped at intervals formed between several auxiliary pipes partially protruding from the fixed grating 220. And move to the next section.

Meanwhile, as shown in FIGS. 2 and 3, it is preferable that the incinerator 200 is provided with a cooling water supply pipe 240. The cooling water supply pipe 240 includes a first cooling water supply pipe 242 and a second cooling water supply pipe 244 corresponding to the first fixed grating 222, the second fixed grating 224 and the third fixed grating 226. ), the 3rd cooling water supply pipe 246, the 1st, 2nd, 3rd cooling water supply pipes 242, 244, 246 to circulate the cooling water phase changed into steam to the outside of the incinerator (waste heat boiler, etc.) It includes a recovery pipe 248 and an upper cooling water supply pipe 249 interposed between the first cooling water supply pipe 242.

The cooling water supply pipe 240 is manufactured using a material having both durability and heat resistance so as to sufficiently withstand corrosion by heat and gas, and its thickness must be designed in consideration of corrosion by gas sufficiently.

Each of the first cooling water supply pipe 242, the second cooling water supply pipe 244, and the third cooling water supply pipe configuration 246 are the same bar. Hereinafter, the first cooling water supply pipe 242 is used as an example. The configuration of the supply pipe 240 will be described.

The first cooling water supply pipe 242 cools the first fixed grating 222 which is a refractory material, thereby preventing thermal corrosion of the first fixed grating 222. The first cooling water supply pipe 242 is installed in front of the first rear pipe 242a and the first fixed grate 222 inserted into the lower water cooling jacket 210, which is the rear surface of the first fixed grate 222. The first front pipe 242b installed in parallel with the first rear pipe 242a and the first fixed grating 222 made of refractory by branching from the first front pipe 242b in the direction of the first fixed grating 222 It includes several first auxiliary pipes (242c) inserted and installed.

As shown in FIG. 2, cooling water is supplied from the lower post-combustion section of the incinerator and circulates through each section while moving upward. By circulating from the post-combustion section with the highest temperature, thermal deformation and thermal corrosion of the cooling water pipe are prevented. It can be prevented as much as possible.

3 and 5, a circulation path of the cooling water will be described.

The cooling water supplied from the third rear pipe 246a passes through the third front pipe 246b, and some of the cooling water is branched from the third front pipe 246b and inserted into the third fixed grating 226. It is supplied through the auxiliary pipe 246c to cool the third fixed grating 226 and the post combustion section (see FIG. 2).

In addition, the cooling water that has cooled the third fixed grate 226 and the post-combustion section is branched from the second rear pipe 244a, the second front pipe 244b, and the second front pipe 244b to form a second fixed grating 224. ) To prevent thermal corrosion of the second fixed grate 224 by cooling the second fixed grating 224 and the secondary combustion section (see FIG. 2) while circulating in order with the second auxiliary pipe 244c inserted in the do.

Subsequently, the cooling water that has passed through the second fixed grate 224 and the secondary combustion section is branched from the first rear pipe 242a, the first front pipe 242b, and the first front pipe 242b, and the first fixed grate ( While circulating in the order of the first auxiliary pipe 242c inserted and installed in the 222, the bar passes through the first fixed grating 222 and the re-drying and primary combustion section (see FIG. 2), and finally the lower water cooling jacket 210 After passing through the pre-drying section (see FIG. 2) by moving to the upper cooling water supply pipe 249 built in the unit, it is moved to the waste heat boiler or the like through the recovery pipe 248.

Meanwhile, as shown in FIG. 1, the flame-retardant waste storage 300 is buried underground (PIT structure), similar to the above-described household waste storage 100, but the upper end thereof is buried to protrude about 30 cm from the ground. desirable. The flame-retardant waste stored in the flame-retardant waste storage 300 is transferred to the dryer 400 through several processes to be described later.

1 and 6, a flame retardant waste storage and an automatic flame retardant waste transfer machine will be described.

The flame-retardant waste storage 300 includes a hopper 310 with an open top. The hopper 310 includes an inclined portion 312 whose lower portion is inclined downward inward, and a vertical portion 314 formed vertically upward from the upper end of the inclined portion 312, and the upper portion thereof is opened.

Therefore, when the flame-retardant waste is introduced into the hopper 310 through the vertical portion 314, it is accumulated in the center of the inside of the hopper 310 riding the inclined portion 312.

In addition, the upper end of the hopper 310 is sealed with a cover 320 so that the odor generated by decaying the flame-retardant waste cannot escape through the open upper portion of the hopper 310.

The flame-retardant waste stored in the flame-retardant waste storage 300 is transported using the unmanned automatic quantitative feeder 10 for waste.

The waste unmanned automatic quantitative feeder 10 is a hollow horizontal frame casing 12 located at a certain interval from the top of the hopper 310 sealed with a cover 320, from one side of the horizontal frame casing 12 downward The first vertical frame casing 14, which is located in the center of the upper end of the hopper 310 and communicates with the inside of the hopper 310, and the second formed to extend downward from the other side of the horizontal frame casing 12 The vertical frame casing (16), the horizontal frame casing (12) is installed horizontally through the inside of the running rail (18) and the running rail (18) to move on the flame-retardant waste storage (300) to remove the It includes a conveying means 19 for carrying out to the outside through the two vertical frame casing 16.

The transfer means 19 includes a hoist 19a installed to be movable on the running rail 18 and a grab bucket 19b coupled to the hoist 19a so as to be elevating, and close to the grab bucket 19b. By installing a sensor (not shown), the proximity sensor detects the flame-retardant waste, and thus the degree of elevation of the transfer means 19 can be adjusted.

When the hoist 19a moves along the running rail 18 installed inside the horizontal frame casing 12 to reach the first vertical frame casing 14, the movement of the hoist 19a stops, and the grab bucket 19b Descend. This grab bucket (19b) passes through the inside of the first vertical frame casing (14) and enters the inside of the hopper (310) sealed with the cover (320).When it descends further to reach the flame-retardant waste position, the grab bucket (19b) The proximity sensor mounted in the sensor detects this and further descending of the grab bucket 19b is stopped.

The grab bucket 19b collects flame-retardant waste in the stopped state, and rises again by the hoist 19a. When the ascending operation is completed to the set position, the hoist 19a travels in the horizontal direction along the travel rail 18 and stops the driving operation when it is positioned on the second vertical frame casing 16. At the same time, the hoist 19a starts a lowering operation and moves down to the inlet of the dehydrator 20, and when it comes to the set position, the lowering operation of the hoist 19a is stopped, and at the same time, the grab bucket 19b is opened to remove flame-retardant waste. It is put into the dehydrator 20.

All of these operations are fully automatic and continuous operation by a limit switch (not shown) installed at a set position, and the above operations are repeatedly performed according to the number of times of injection according to the amount of one-time injection of flame-retardant food waste.

By this unmanned automatic operation, it is possible to unmannedly automate the injection of the flame-retardant waste into the dehydrator 20, as well as to input a quantity.

On the other hand, the flame-retardant waste is decayed in the flame-retardant waste storage 300 to generate combustible gas. In order to further promote the generation of such combustible gas, it is preferable that a catalyst supplier 330 is installed in the hopper 310.

The catalyst supplier 330 sprays a catalyst on the flame retardant waste accumulated in the flame retardant waste storage 300 to increase bacteria.

By accelerating, it promotes the production of flammable gases such as carbon and hydrogen, which are volatile organic compounds. This combustible gas is transferred to the incinerator 200 and used as auxiliary fuel for the incinerator 200, and a description of this process will be described later.

As shown in FIG. 1, it is preferable to separate the dehydration liquid contained in the flame-retardant waste using a dehydrator 20 before the flame-retardant waste is transferred to the dryer 400.

In addition, if the flame-retardant waste is food waste, it is preferable that the dehydrator 20 includes a tearing function to tear the garbage bag containing the food waste.

The dehydrator 20 receives flame-retardant waste from the unmanned automatic quantitative feeder 10 and separates the dehydration liquid contained in the flame-retardant waste. The dewatered filtrate is sent to the dewatered filtrate storage tank 900, and the flame-retardant waste from which the dewatered filtrate is separated is sent to the dryer 400. Since the flame-retardant waste itself has a high moisture content, transferring it directly to the dryer 400 and performing the drying process not only lowers energy efficiency, but also pollutes the environment such as dioxin in the process of being transferred to the incinerator 200 and incinerated later. There is a problem that a large number of substances may be generated.

In this way, the dehydration filtrate separated by the dehydrator 20 is stored in the dehydration filtrate storage tank 900, and the flame-retardant waste from which the dehydration filtrate is separated is transferred to the dryer 400, thereby improving energy efficiency and reducing the generation of environmental pollutants. It becomes possible to suppress it.

In addition, apart from the flame-retardant waste transferred to the dryer 400, if the dehydrated filtrate stored in the dewatered filtrate storage tank 900 is dumped into the soil or ocean as it is, serious environmental pollution is generated, so it is transferred to the incinerator 200, It is preferable to dry.

In this way, the combustible gas generated in the flame-retardant waste storage 300 and the dehydrated filtrate collected in the dehydration liquid storage tank 900 are transferred to the incinerator 200, and the combustible gas is an auxiliary fuel when the dehydration filtrate is incinerated in the incinerator 200. It is used as, and the dehydration filtrate is incinerated at high temperature in the incinerator 200.

With reference to FIGS. 1 and 7, a nozzle device 30 dedicated to a mixed incinerator 30 for living and flame-retardant waste that transfers and sprays combustible gas and dehydration liquid to the incinerator will be described.

The nozzle device 30 dedicated to the incinerator for mixing household and flame-retardant wastes allows combustible gas and dewatered filtrate to be sprayed on the secondary combustion section (see Fig. 2) in consideration of the incineration effect of the dehydration filtrate using combustible gas used as auxiliary fuel. It is preferable to be installed on one side of the incinerator to be able to.

The nozzle device 30 dedicated to the living and flame-retardant waste mixing incinerator is an inner casing 32 that supplies the dehydration liquid separated from the flame-retardant waste, and such an inner casing 32 is inserted between the outer circumferential surface of the inner casing 32 and its inner circumferential surface. The outer casing 34 having a certain distance, the mixing casing 36 in communication with one side of the outer casing 34, the air nozzle 36a branched from the mixing casing 36, the gas nozzle 36b, and the inner casing ( 32) and one end of the outer casing 34 includes a spray nozzle 38 coupled.

One end of the gas nozzle 36b is communicated with the flame retardant waste storage 300, and the combustible gas and odor generated from the flame retardant waste are transferred through the gas nozzle 36b. Compressed air is used to push these combustible gases and odors toward the incinerator. Compressed air having a pressure of about 5 to 6 kg/ is supplied through the air nozzle 36a. These compressed air and combustible gases And the odor is mixed in the mixing casing 36 and is directed toward the incinerator 200 through the outer casing 34 by receiving a strong driving force by compressed air.

In addition, the dehydration liquid separated from the flame-retardant waste is transferred in the direction of the incinerator 200 through the inner casing 32 connected to the dehydration liquid storage tank 900 at one end. Like combustible gas and odor, a pump (not shown) You can use your back to apply momentum.

The injection nozzle 38 is coupled to both ends of the outer casing 34 and the inner casing 32, and the transferred combustible gas and odor, and the dewatering liquid are transferred into the incinerator 200 through the injection nozzle 38. It is injected, and the combustible gas is used as auxiliary fuel when the dehydration liquid is incinerated in the incinerator 200, and the dehydration filtrate is incinerated at high temperature inside the incinerator 200.

Even if the dehydrated filtrate is supplied to the inside of the incinerator 200, the outlet temperature of the incinerator 200 satisfies the facility installation standard, and a separate supporting device (not shown) is not required. The combustible gas serving as an auxiliary fuel is supplied to the incinerator 200 at the same time as the dehydrated filtrate is supplied, and is subjected to high-temperature incineration, and serves to increase the outlet temperature of the incinerator 200. However, when the temperature at the outlet of the incinerator 200 rises above, it is possible to protect the facilities of the incinerator 200 by controlling the injection amount of the dehydration liquid, and suppress the propagation of air pollutants (nitrogen oxides, etc.).

That is, if only the dehydration liquid is incinerated inside the incinerator 200, the outlet temperature of the incinerator 200 may decrease, but the combustible gas, which is an auxiliary fuel, is simultaneously supplied to the incinerator 200, thereby preventing such a problem. .

The flame-retardant waste from which the dewatered filtrate is separated is transferred to a dryer, and the flame-retardant waste is dried using a heat source of waste gas generated in the incinerator.

With reference to FIGS. 1 and 8, a dryer, which is an essential part of an efficient drying system for living and flame-retardant waste, of the present invention will be described.

The dryer 400 includes a rotating drum 410, an inorganic ceramic coating layer 420 deposited on the inner circumferential surface of the rotating drum 410, a flame-retardant waste inlet pipe 430 and a waste gas inlet pipe separately provided on one side of the rotating drum 410 (440), including a discharge pipe 450 provided on the other side of the rotating drum 410.

The rotating drum 410 is installed to be rotatable with a pair of support rollers 460, and is rotated by a driving motor 470. At this time, the flame-retardant waste and waste gas introduced into the rotary drum 410 through the flame-retardant waste inlet pipe 430 and the waste gas inlet pipe 440 are mixed with each other, and the flame-retardant waste is dried using the waste gas as a heat source. In this process, the inorganic ceramic coating layer 420 deposited on the inner circumferential surface of the rotary drum 410 generates radiant heat using high-temperature waste gas, so that the flame-retardant waste is dried by transferring radiant heat to the inside as well as the skin. , Function to lower the moisture content.

Therefore, since the moisture content of the flame-retardant waste that has passed through the dryer 400 is reduced to 20% or less, it is possible to incinerate the flame-retardant waste by mixing it with household waste.

On the inner surface of the rotating drum 400, a plurality of guide lifters 480 are spaced at regular intervals in the circumferential direction so that the drying process can be performed while the flame-retardant waste is uniformly distributed throughout the inner circumferential surface of the rotating drum 410. It protrudes.

Therefore, when the rotating drum 410 rotates, the flame-retardant waste is evenly located between the guide lifters 480 that are adjacent to each other by centrifugal force, and in this state, the high temperature flowing inside the rotating drum 410 By being evenly exposed to the waste gas, the flame-retardant waste can be uniformly dried.

The sufficiently dried flame-retardant waste and the drying gas generated in the drying process move to the discharge pipe 450 provided on the other side of the rotating drum 410, and the dry gas passes through the drying gas discharge port 452 provided on the upper part of the discharge pipe 450. It is transferred to a waste heat boiler or the like, and the dried flame-retardant waste is moved to a mixing compactor 500 to be described later.

On the other hand, if the rotating drum 410 malfunctions or does not operate continuously, if high-temperature waste gas and flame-retardant waste are continuously introduced, there is a risk of fire. One side of the rotating drum 410 and the outlet 450 ) It is preferable to install the first extinguishing water spray nozzle 412 and the second extinguishing water spray nozzle 454, respectively.

In order to further lower the moisture content of the dried flame-retardant waste and to incinerate more smoothly in the incinerator 200, it is preferable to use the incineration ash discharged from the incinerator 200 as a combustion accelerator for the flame-retardant waste. The mixing compactor 500 makes this possible by mixing incineration ash with flame retardant waste.

Since the incineration ash discharged from the incinerator 200 maintains a high temperature of about 500° C., if such incineration ash is mixed with flame retardant waste as it is, the risk of fire is very high. In addition, since various foreign substances such as iron pieces are mixed in the incineration ash, the risk of failure of the mixer is very high if this is put into the mixing press 500 as it is.

Therefore, in order to recycle the incineration ash discharged from the incinerator 200 as a combustion accelerator for flame-retardant waste in the mixing compactor 500, it is preferable to cool the incineration ash using the cooler 600 before supplying it to the mixing compactor 500. Do.

Hereinafter, a cooling tank for use as a flame retardant waste combustion accelerator will be described with reference to FIGS. 1 and 9.

1 and 9, the cooler 600 for use as a flame retardant waste combustion accelerator, a transfer case 610 provided with an incinerator inlet 610a on one side and an incineration ash outlet 610b on the other side , The rotation shaft 610c rotatably installed inside the transfer case 610, the transfer screw 620 formed by spirally coupled or integrated with the rotation shaft 610c, and the cooling water spray nozzle 630 installed at the incinerator inlet 610a ).

When the incineration ash discharged from the incinerator 200 flows into the incineration ash inlet 610a provided on one side of the transfer case 610, cooling water is sprayed from the cooling water spray nozzle 630 to instantly cool the incineration ash at about 500°C.

At this time, the amount of cooling water injected from the cooling water spray nozzle 630 is preferably adjusted to such an extent that the cooling water can be vaporized by the sensible heat of the incineration ash.If the cooling water is injected excessively, the moisture content of the incineration ash increases, so that the mixed press Problems may arise when mixing with flame retardant waste dried at 500. That is, it is possible to fade the drying process of the flame-retardant waste proceeding in the dryer 400 when the amount of cooling water spray is excessive.

Even if the incineration ash at about 500 °C is rapidly cooled, the incineration ash still maintains a high temperature state. Therefore, in the process of transferring the incineration material, the rotation shaft 610c, the transfer screw 620, etc. may be thermally deformed.To prevent this, a water cooling chamber 640 is mounted inside the rotation shaft 610c to prevent the rotation shaft 610c. ), of course, cools the transfer screw 620.

In addition, it is preferable to install a water cooling chamber 612 in the transfer case 610 to recool the incineration ash that has been first cooled by the cooling water spray nozzle 630 to perform secondary cooling.

In this way, hot water or steam generated in the process of cooling and transporting the incineration ash discharged from the incinerator 200 is discharged from the transfer case furnace 610 and used again in a waste heat boiler, and the cooled incineration ash is passed through the incineration ash outlet 610b. It is discharged from the transfer case 610.

On the other hand, at the end of the incinerator outlet 610b, one end of the iron piece separation duct 710 in communication with the incineration material outlet 610b is coupled, and a magnetic separator 700 is installed inside the iron piece separation duct 710. Such a magnetic separator 700 may be installed directly on one side of the incinerator outlet 610b.

Based on the magnetic separator 700, the other end of the iron piece separation duct 710 is divided into an iron piece movement path 712 and an incineration ash movement path 714, and the incineration ash movement path 714 is a material through which the incinerator that is discarded again moves. It is divided into 1 incineration ash moving path 714a and a second incineration ash moving path 714b connected to the mixing press 500, and passing through the first incineration ash moving path 714a and the second incinerator moving path 714b. In order to control the amount of movement of the incineration material, the slide gate 720 is coupled to the first and second incineration material movement paths 714a and 714b so as to be able to open and close.

The magnetic separator 700 installed on the inside of the iron piece separation duct 710 is connected and rotated through a rotating motor 730 and a pulley (P), and a magnet 740 is coupled to one side thereof to separate the iron pieces from the incineration material. . It is preferable that a scraper 750 is formed on the outer peripheral surface of the magnetic separator 700 to guide the separated iron pieces to the iron piece moving path 712.

Through this process, the sufficiently cooled incineration ash is metered to achieve an optimum mixing ratio with the dried flame-retardant waste supplied to the mixing compactor 500 and supplied to the mixing compactor 500 through the second incinerator moving path 714b. do.

With reference to FIGS. 1 and 10 to 13, a mixing compactor 500, which is an essential part of an efficient drying system for living and flame retardant waste according to the present invention, will be described.

As shown in FIGS. 1 and 10, the mixing compactor 500 includes an incineration ash input duct 500a on one side so that the incineration ash supplied from the cooler 600 and the flame-retardant waste supplied from the dryer 400 can be supplied. The mixing case 510 in which the flame-retardant waste input duct 500b is separately provided, is installed to be rotatable in the longitudinal direction inside the mixing case 510, and is installed parallel to each other at regular intervals, and one end is the mixing case ( One end of the first rotation shaft 520 and the second rotation shaft 530 protruding to the outside through 510, the first rotation shaft 520 and the second rotation shaft 530 protruding to the outer surface of the mixing case 510 And a power source 540 connected via a first driving wheel 522 and a second driving wheel 532, a first driving wheel 522 and a driving pulley P1 which are respectively coupled to each other but whose outer circumferential surfaces are engaged with each other. .

Looking at the power transmission process of the mixing compactor 500, the power generated from the power source 540 is transmitted to the first driving wheel 522 through the driving pulley P1, and accordingly, the second driving wheel 532 is also interlocked. As a result, the first rotation shaft 520 and the second rotation shaft 530 are also rotated in the mixing case 510.

As shown in FIG. 11, a first fixing pin 524 is formed protruding from the outer circumferential surface of the first rotation shaft 520, and a first compression plate 526 is rotatably coupled to the first fixing pin 524. do. These first fixing pins 524 and the first compression plate 526 are three to form a pair, it is preferable to install several pairs at regular intervals.

In addition, the three first fixing pins 524 and the first crimping plate 526 forming a pair are installed at an interval of 120° in the circumferential direction of the first rotation shaft 520, but not on the same outer circumferential surface, but to stagger each other. It is desirable to install.

As shown in FIGS. 12 and 13, a second fixing pin 534 protrudes also on the outer circumferential surface of the second rotation shaft 530, and a second compression plate 536 rotates on the second fixing pin 534 It is possible to combine the bar, such that the second fixing pin 534 and the second compression plate 536 are also three to form a pair, it is preferable to install several pairs at regular intervals.

In addition, like the first fixing pin 524 and the first compression plate 526, the second fixing pin 534 and the second compression plate 536 forming a pair are in the circumferential direction of the second rotation shaft 530 It should be installed at intervals such as 120°, but it is desirable to install them so that they are not on the same outer circumferential surface, but staggered.

In this way, by installing the first pressing plate 526 and the second pressing plate 536, the empty space inside the mixing case 510 can be minimized, so that incineration ash and flame-retardant waste can be crushed, mixed, and compressed. Of course, the compressed mixture can be transferred while the first pressing plate 526 and the second pressing plate 536 rotate around the first fixing pin 524 and the second fixing pin 534.

Here, the pressure side plate has a considerable degree of wear in the process of mixing, transporting, and pressing the incinerator and flame-retardant waste, so it is preferable to be made of a wear-resistant material.By improving the durability of the mixing press 500, the incinerator 200 It can meet the conditions of complete combustion within.

The pulverized, mixed, and compressed mixture has a lower moisture content than conventional flame-retardant waste, and incineration ash acts as a combustion accelerator for flame-retardant waste, increasing combustion efficiency and suppressing the generation of dioxin due to moisture.

The mixture exits through the mixture outlet (500c, see FIG. 11) provided on the other side of the mixing case 510, is transferred to the above-described household waste storage 100 through a mixture transfer conveyor, etc., to be incinerated in the incinerator 200. It can be.

Meanwhile, a press-in blower 800 is installed in the incinerator to supply combustion air required for waste combustion. In addition, when a wave is given to the combustion air supplied to the incinerator and a high concentration of oxygen anions is supplied in a state in which such a wave is maximized, the combustion efficiency of the incinerator 200 receiving such combustion air can be maximized.

Hereinafter, a combustion air supply system will be described with reference to FIGS. 14 and 15.

As shown in FIG. 14, the combustion air supply system includes a press-in blower 800, a high magnetic field generator 810, and a high concentration cluster oxygen anion generator 820.

In order to maximize the wave of combustion air supplied to the incinerator 200 and supply of negative ions, the high magnetic field generator 810 and the high concentration cluster oxygen anion generator 820 are preferably installed closest to the incinerator side.

The high magnetic field generator 810 faces the neodymium permanent magnet 812 surrounding the outer circumferential surface of the combustion air supply pipe, and the sealing cover 814 and the neodymium permanent magnet 812 accommodating the neodymium permanent magnet 812 It includes an electromagnet 816 that exists in a position where the power is turned on and off, and generates a magnetic field according to whether the power is turned on or off.

When the electromagnet 816 is periodically turned on/off, the magnetic flux density is changed by the neodymium permanent magnet 812, and three mechanical changes of gravity, buoyancy and magnetic force are accompanied, thereby maximizing the combustion air wave. In other words, by periodically changing the magnetic field generation to make the air wave as irregular as possible, the wave is maximized.

In addition, as shown in FIG. 15, a plurality of guide vanes 42 are installed on the inside of the combustion air supply pipe 40 corresponding to the mounting portion of the neodymium permanent magnet 812 so that vortex is generated in the air flow. Preferably, the structure can be installed in a structure in which the designer can maximize the generation of eddy currents through an optimal design.

As shown in Fig. 14, the combustion air whose wave is maximized through the high magnetic field generator 810 is supplied to the incinerator 200 by receiving the high concentration cluster oxygen anions supplied from the high concentration cluster oxygen anion generator 820. .

The high-concentration cluster oxygen anion has a size of about 60 times that of ordinary oxygen particles, and when the high-concentration cluster oxygen anion is diffused in the incinerator 200, there is an advantage of improving combustion performance. In addition, these high-concentration cluster oxygen anions have the effect of removing organic substances such as formaldehyde and volatile organic compounds (VOCS), and have the effect of suppressing the generation of mold spores, bacteria, bacteria, and odors charged with positive ions. It is also desirable to radiate such a high concentration cluster oxygen anion around (200).

The combustion air that has been supplied with the high concentration cluster anions from the high concentration cluster oxygen anion generator 820 is branched from the combustion air supply pipe 40, penetrates the side wall of the incinerator, and is connected to the incinerator 200 through the air supply nozzle 44. Is supplied as

Hereinafter, with reference to FIGS. 16 and 17, a description will be given of an embodiment of a method for incineration of mixed living and flame retardant waste to which the present invention is applied.

In addition, descriptions of the overlapping parts in the living and flame-retardant waste mixed incineration system of the present invention described above will be replaced with the above description.

As shown in FIG. 16, the method of incineration of mixed living and flame-retardant waste includes a household waste storage process (S100), an incineration process (S200), a flame-retardant waste storage process (S10), and a drying process (S20).

The household waste storage process (S100) is a process of receiving and storing household waste from a vehicle carrying in household waste. The stored household waste is transferred to the incinerator through the household waste transfer process (S150) by various means.

In addition, the flame-retardant waste storage process (S10) is a process of receiving and storing the flame-retardant waste from a vehicle carrying in the flame-retardant waste, and this process is performed separately from the household waste storage process (S100). This process may be performed sequentially or simultaneously with the household waste storage process (S100).

In the incinerator, the incineration process (S200) of incineration of the transferred household waste is performed. At this time, since the flame-retardant waste has a high moisture content, if it is incinerated directly in the incinerator, it not only lowers the combustion efficiency of the incinerator, but also generates environmental pollutants such as dioxin, so that the moisture content goes through a separate process before being brought into the incinerator. Should be lowered.

The drying process (S20) is a process of collecting waste heat from exhaust gas generated during incineration of domestic waste in the incinerator and using this to reduce the moisture content of the flame retardant waste.

Dried flame-retardant waste may be directly put into the incinerator and incinerated, but if the household waste incinerator generated in the incinerator is used as a combustion accelerator for the dried flame-retardant waste, the combustion efficiency in the incinerator can be increased. This process is a mixed compression process (S500), and the living and flame-retardant waste mixture incineration method of the present invention preferably includes a mixed compression process (S500).

The mixing and compression process (S500) is a process of mixing and compressing a certain amount of incineration ash incinerated in the incinerator and the flame-retardant waste dried in the drying process (S20).In this process, incineration ash and flame-retardant waste are mixed and compressed, and The moisture content of the flame-retardant waste decreases due to the slight heat present, and the unburnt components in the incineration ash discharged below the amount of heat loss are mixed with the flame-retardant waste and compressed, thereby promoting combustion in the incinerator.

On the other hand, since the incineration ash taken out of the incinerator is at a high temperature of about 500° C. or higher, if it is put into the mixing and compression process (S500) as it is, it reacts abruptly with the flame-retardant waste to increase the amount of dioxin, as well as the risk of fire. There is a high problem. Therefore, after cooling the incineration ash carried out from the incinerator to a certain temperature or less, it is preferable to put it into the mixing and compression process (S500).

In this way, the process of lowering the incineration ash discharged from the incinerator below a certain temperature is the cooling process (S300). The cooling process (S300) is a process of lowering the temperature of the incinerator by spraying a certain amount of cooling water after transferring the incineration ash discharged from the incinerator using various conveying means such as a conveying conveyor. The amount of cooling water should be adjusted to a level that can lower the temperature of the incineration ash, and if more than that is injected, the moisture content of the incineration ash is increased, so the combustion accelerator function may decrease when mixing with the flame retardant waste in the mixing process (S500). have.

After the cooling process (S300) is in progress, the mixed compression process (S500) must be performed. Before proceeding with this mixed compression process (S500), the iron strip removal process (S400) for separating the iron pieces mixed with the cooled incineration ash is preceded. It is desirable. If the incineration ash mixed with iron pieces is supplied to the mixing compression process (S500), it may cause mechanical failure of the mixer in which the mixing compression process (S500) proceeds, and even if the mechanical failure does not occur, iron pieces are non-combustible materials. Therefore, there is a problem that it is not incinerated.

Therefore, it is preferable to separate and remove non-combustible materials such as iron pieces through the iron piece removal process (S400). Thereafter, a separation process (S450) of separating the incineration ash from which the iron pieces have been removed is performed.

The separation process (S450) is a process of measuring and separating the amount of incineration ash supplied to the mixing and compression process (S500) and the incineration ash to be discarded. This is to obtain optimal combustion efficiency in the incinerator by putting a certain amount of pure incineration ash into the mixing and pressing process (S500) in consideration of the amount of dried flame retardant waste.

On the other hand, such a living and flame-retardant waste mixed incineration method further includes a dewatered filtrate storage process (S30) and a catalyst supply process (S12), and the dehydration filtrate and catalyst supply process of the flame-retardant waste separated in the dewatered filtrate storage process (S30) ( It is preferable to transfer and supply the combustible gas increased through S12) to the incinerator to be used in the incineration process (S200).

As described above, when the flame-retardant waste is incinerated as it is, environmental pollutants such as dioxin are generated, and there is a need to separate and store the dehydrated filtrate from the flame-retardant waste. This process is the dehydration filtrate storage process (S10).

If the dehydrated dewatered waste separated and stored through the dehydration filtrate storage process (S10) is discarded, this may contaminate the soil as well as the water quality.This problem can be solved by transferring the dehydrated filtrate to the incinerator and incineration at high temperature. have.

In addition, the gas generated when the flame-retardant waste decays is a combustible gas, and it is preferable to increase the amount of the combustible gas generated through the catalyst supply process (S12). The combustible gas generated through this process is transferred to the incinerator and used as an incinerator auxiliary fuel, thereby improving combustion efficiency.

It is preferable that the mixed incineration method of domestic and flame-retardant waste further includes a process of supplying combustion air.

As shown in FIGS. 16 and 17, the combustion air supply process (S600) is a process of supplying combustion air into the incinerator in order to maximize the incineration efficiency of the incinerator. This combustion air supply process (S600 ) Is more preferably subdivided into the blowing process (S610), the air wave process (S620), and the negative ion supply process (S630) when considering the combustion efficiency of the incinerator.

Combustion air supplied through the blowing process (S610) has a certain wave. If the wave is applied to the combustion air through the air wave generation process (S620), combustion efficiency in the incinerator may be improved. As a method of giving a wave to the combustion air, a magnetic field can be used. In particular, when the magnetic field is irregularly deformed, such a wave can be maximized, and the electromagnet can be used in this manner as described above.

By mixing anion oxygen clusters through an anion supply process (S630) to the combustion air in which the wave is maximized through the air wave generation process (S620) and supplying it to the incinerator, the combustion efficiency of the incinerator can be further improved.

An embodiment of a system for recycling waste heat recovered from a dryer will be described with reference to FIGS. 1 and 16.

The exhaust gas waste heat discharged from the incinerator 200 is supplied to the dryer 400 and is partially used for drying flame-retardant waste, and the exhaust gas waste heat in the state of steam or hot water is used for the operation of the waste heat boiler 50. The waste heat boiler 50 is provided with a separate water supply facility 70, and the water supplied to the water supply facility 70 is steam or hot water recovered from the dryer 400, and the incinerator ( 200) It is covered with high-temperature cooling water discharged from the water cooling jacket and cooler 600. That is, the city water is partially supplemented with steam or hot water recovered from the dryer as much as the amount required and evaporated from the waste heat boiler 50, and the rest is transferred to the incinerator 200 and the lower water cooling jacket 210 and the cooler 600 It is supplemented by receiving the high-temperature cooling water discharged from it.

Therefore, the energy recovery efficiency can be further maximized by using the waste heat boiler 50.

The exhaust gas discharged from the incinerator or waste heat boiler contains acidic gas components such as hydrogen chloride, and is transferred to the semi-dry reaction tower 60 to remove such gas.

In the semi-dry reaction tower 60, a liquid slaked lime slurry is injected to neutralize the acid gas. The semi-dry reaction tower 60 includes a liquid slaked lime slurry supplying facility 62 for supplying the liquid slaked lime slurry. The neutralized exhaust gas is discharged from the chimney 99 to the atmosphere by the manned blower 90 after removing the dust through the filter dust collector 80.

In addition, such a gas is cooled in the process of being diluted with cold air in the atmosphere with heated humid air to cause a white smoke phenomenon. This phenomenon can be prevented by passing the gas through the white smoke prevention facility 95 before discharging the gas to the chimney.

Referring to FIG. 18, a semi-dry reaction tower, which is an essential part of a mixed incineration system for living and flame retardant wastes to which the present invention is applied, will be described in more detail.

The semi-dry reaction tower 60 used in the present system is formed so that the exhaust gas can react with the liquid slaked lime slurry in multiple stages.

This semi-dry reaction tower includes a first chamber 62, a second chamber 64, and a third chamber 66.

The first chamber 62 is adjacent to the second chamber 64 and the second chamber 64 is adjacent to the third chamber 66. An exhaust gas inlet 62a is formed at an upper end of the first chamber 62 so that exhaust gas can be introduced, and a first liquid slaked lime slurry injection nozzle 62N is installed at one side of the exhaust gas inlet 62a.

In addition, a second liquid slaked lime slurry spraying nozzle 64N and a third liquid slurry spraying nozzle 66N are installed at upper ends of the second chamber 64 and the third chamber 66, respectively.

First, second, and third reactant outlets 62b, 64b and 66b are formed at the lower ends of the first, second, and third chambers 62, 64, and 66, respectively.

The first chamber 62 and the second chamber 64 adjacent to each other are divided by a first separation wall 63, and the second chamber 64 and the third chamber 66 are divided into a second separation wall 65. And a first exhaust gas outlet 63a is formed under the first separation wall 63 so that the first chamber 62 and the second chamber 64 can communicate with each other, and the second separation wall 65 A second exhaust gas outlet 65a is formed in the upper part of) so that the second chamber 64 and the third chamber 66 can pass through. In addition, a third exhaust gas outlet 66a through which exhaust gas is finally discharged is formed at one side of the third chamber 66.

The process of reacting the exhaust gas by this semi-dry reaction tower will be briefly described.

The liquid slaked lime slurry stored in the liquid slaked lime storage tank L is supplied to the first, second, and third liquid slaked lime slurry spray nozzles 62N, 64N, 66N by the pump P.

At the same time as the flue gas is introduced through the flue gas inlet 62a, the liquid slaked lime slurry is sprayed from the first liquid slaked lime slurry injection nozzle 62N, thereby first neutralizing the acid flue gas containing SOX and HCl. At this time, the reactant is a solid material The exhaust gas is discharged to the first reactant outlet 62b, and the primary neutralized exhaust gas moves to the second chamber 64 through the first exhaust gas outlet 63a formed in the first separation wall 63.

The primary neutralized exhaust gas moves to the second chamber 64 and is secondary neutralized while reacting with the liquid slaked lime slurry supplied from the second liquid slaked lime slurry spray nozzle 64N.

At this time, the generated reactant is discharged as a solid material to the second reactant outlet 64b, and the secondary neutralized exhaust gas is transferred to the third chamber 66 through the second exhaust gas outlet 65a formed in the second separation wall 65. Move.

The secondary neutralized exhaust gas moves to the third chamber 66 again and reacts with the liquid slaked lime slurry supplied from the third liquid slaked lime slurry spray nozzle 66N, and is thirdly neutralized.At this time, the generated reactant is also the third The exhaust gas is discharged to the reactant discharge port 66b, and the third neutralized exhaust gas is discharged to the outside through the third exhaust gas outlet 66a, and is supplied to the filter dust collector 80.

In this way, by passing the exhaust gas through the first, second, and third chambers 62, 64, 66, the time for the exhaust gas to stay in the semi-dry reaction tower 60 increases, as well as vortex generation in this process, Since the contact area with the liquid slaked lime slurry is widened, the collection efficiency can be improved. In addition, since the flow of the exhaust gas changes downward, upward and downward, the contact with the liquid slaked lime slurry and the reaction time are extended, so that the collection efficiency is further improved.

In a typical semi-dry reactor, about 60 to 70% of the harmful gas is collected, and about 30 to 40% is discharged into the atmosphere, but the exhaust gas collection efficiency can be improved to 90% or more by using a multistage reaction.

As such, the increase in collection efficiency not only reduces the loss of liquid slaked lime slurry, but also improves the efficiency by reducing the load of the filter dust collector 80 installed at the rear end, and reduces the discharge of fly ash, making management and maintenance simple. There is an advantage.

Although the present invention has been illustrated and described with reference to specific embodiments, it is understood in the art that the present invention can be variously improved and changed within the scope of the technical spirit of the present invention provided by the following claims. It will be obvious to a person of ordinary knowledge.

10: unmanned automatic quantitative feeder for waste 20: dehydrator
30: Nozzle device exclusively for household and flame retardant waste mixing incinerator
40: combustion air supply pipe 50: waste heat boiler
60: semi-dry reaction tower 70: water supply facility
80: filter dust collector 90: manned blower
100: household waste storage 200: incinerator
210: lower water cooling jacket 220: fixed grate
230: driving grate 240: cooling water supply pipe
300: flame retardant waste storage 310: hopper
320: cover 330: catalyst feeder
400: dryer 410: rotating drum
420: inorganic ceramic coating layer 430: flame retardant waste inlet pipe
440: waste gas inlet pipe 450: discharge pipe
460: support roller 470: drive motor
480: guide lifter 500: mixing press
510: mixing case 520: first rotating shaft
530: second rotation shaft 540: power source
600: cooler 610: transfer case
620: moving screw 630: cooling water spray nozzle
700: magnetic separator 710: iron piece separation duct
720: slide gate 730: rotary motor
740: magnet 750: scraper
800: press-in blower 810: magnetic field generator
820: negative ion generator 900: dehydration liquid storage tank

Claims (3)

Incinerator 200; A transfer case 610 provided with an incinerator inlet port 610a on one side and an incinerator outlet port 610b on the other side so that the household waste incinerator transferred from the incinerator 200 can be introduced; A rotation shaft 610c rotatably mounted inside the transfer case 610; A transfer screw 620 formed on the outer circumferential surface of the rotating shaft so that the incineration material introduced into the incineration material inlet 610a can be transferred in the direction of the incineration material outlet 610b; A cooling water spray nozzle 630 and the rotation shaft 610c mounted on one side of the incineration material inlet 610a to cool the incineration material flowing into the incineration material inlet 610a and the transfer screw 620 and the transfer case 610 A cooler 600 including an inner water cooling chamber 640 penetrating the inside of the unit; One side is provided with a waste gas inlet pipe 440 through which the high-temperature exhaust gas generated from the incinerator 200 flows in, and a flame-retardant waste inlet pipe 430 through which the flame-retardant waste transferred from the flame-retardant waste storage 300 is introduced. A rotating drum 410 having an inorganic ceramic coating layer formed thereon, and a plurality of guide lifters 480 bent in the rotational direction on the inner wall thereof at predetermined intervals in the direction of the inner circumferential surface thereof; A discharge pipe 450 provided on the other side of the rotary drum 410 to separately discharge dried flame retardant waste and dry exhaust gas; On one side, an incineration ash input duct 500a and a flame retardant waste input duct 500b are provided so that the domestic waste incineration material supplied from the cooler 600 and the dried flame-retardant waste supplied from the discharge pipe 450 can be separately input. The mixing case 510 provided with the mixture discharge port 500c on the side, the first and second rotational shafts 520 and 530 which are rotatably installed inside the mixing case 510 but are arranged parallel to each other, and incinerated while interacting with each other Power to the first and second compression plates (526, 536) protruding from the first and second rotary shafts (520, 530) and the first and second rotary shafts (520, 530) so as to mix, compress, and transport household waste and dried flame-retardant waste. Power source 540 to provide a; mixing compactor 500 containing; containing, an efficient drying system of living and flame-retardant waste. The method according to claim 1,
A first extinguishing water spray nozzle 412 is mounted on one side of the rotating drum 410, a second extinguishing water spray nozzle 454 is mounted on one side of the discharge pipe 450, and the first extinguishing water spray nozzle ( 412) and the second extinguishing water spray nozzle 454 is characterized in that it is operated in an emergency, an efficient drying system of living and flame-retardant waste. The method according to claim 1,
An efficient drying system for living and flame-retardant waste, characterized in that the heat quantity of the dry exhaust gas discharged from one side of the discharge pipe 450 is used to heat the water of the waste heat boiler 50.

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