JPH02238209A - Combustion treatment device for waste refuse with synthetic resin attached apparatus for incinerating synthetic resin-including waste - Google Patents

Abstract

PURPOSE:To facilitate the recovery of the metal part and the treatment of the combustion gas to be discharged by installing a system of incineration divided into two steps wherein a primary incinerator synthetic resin attaching to waste is burned and in a secondary incinerator the gas is burned in a secondary manner without allowing it to stay stagnant in the furnace. CONSTITUTION:For the incineration in a primary incinerator 10, a vessel 16 made of a refractory material is loaded with matter for the treatment and put on a truck 15; a plurality of thus packed loads are sent into the furnace 10 through an entry; after the incineration, the trucks 15 are drawn out one by one through an exit. A secondary incinerator 20 provided in this system of incineration is cylindrical in outline and divided at an intermediate position inside into two vertically arranged chambers: a secondary combustion chamber 21 on the upper side and a heat-releasing chamber 22 on the lower side. When waste is incinerated, the part consisting of synthetic resin undergoes combustion at relatively low temperatures (approximately 800 deg.C) in the primary incinerator 10 and the combustion gas produced therefrom flows through a flue 11 into the secondary combustion chamber 21 in the secondary incinerator 20. The incineration results in efficient recovery of the metal part of the waste.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention mainly relates to an apparatus for incinerating waste in which synthetic resin has adhered to metal articles, and in particular to an apparatus for incinerating waste such as synthetic resin-coated wire scraps. This is a device that has been improved so that it can be processed effectively. Conventional technology: 1. Since then, industrial waste such as various types of unnecessary electric wires (cut ends of electric wires sent from electric wire manufacturing factories, rejected electric wires, etc.), old electric wires generated during electrical work, and electric wires attached to various types of equipment to be disposed of are The most efficient method of disposal is to collect this, incinerate it, and recover the copper wire and metal parts. However, salt-1 hibinyl resin is most commonly used as a wire coating material, and as a result, it generates harmful gases such as chlorine gas when incinerated, which reduces the durability of the incinerator due to exhaust gas treatment and damage to the furnace walls. There are various problems such as decline. In order to solve these problems, a device that incinerates waste with synthetic resin adhering to it has already been proposed and is being used in the river. Problems to be solved: In such industrial waste power treatment equipment,
Unlike large dust incinerators, it is necessary to combine them into a relatively small device (mainly installed as a dedicated incinerator and burial chamber), so it is difficult to build an excessively large structure, and it is difficult to produce harmful gases. In order to reduce emissions, increasing the temperature inside the incinerator will cause severe wear and tear on the incinerator walls, which tends to cause localized losses.In addition, it is necessary to treat harmful gas components contained in the exhaust gas after combustion. Also, the processing equipment is 7'2
It caused a lot of damage and required a large amount of treated water. In addition, if the waste to be treated is incinerated, IJC will
In order to take out the incinerated metal parts, it is difficult to process them continuously because the process is to take them out of the furnace after the incineration process is finished, and it is difficult to process them continuously. It was inconvenient to handle. Means for Solving the Problems: In the present invention, the incinerator is arranged in two stages, and the materials to be treated are placed on a trolley equipped with two heat-resistant receiving spaces, and the materials are dumped in the primary incinerator. Synthetic resin is incinerated, and the secondary incinerator burns the gas to prevent it from stagnation in the furnace.Then, the temperature of this combustion gas is lowered and sent to the gas cleaning section where it can be cleaned rationally. The remaining metal parts that have been incinerated in the primary incinerator are
After the required time has elapsed, it is sent outside the furnace, and a part of the cleaning water is used for washing and cooling treatment, and the treated water is used in a chain cycle, which allows for effective recovery of metal materials and reduces the durability of the inside of the furnace. The purpose of the present invention is to provide an incineration treatment device configured so that it can be operated without any problems. That is, the present invention provides an apparatus for incinerating industrial waste made of metal objects to which synthetic resin is attached: The incinerator includes: 1. a tunnel furnace type primary incinerator;
The cylindrical furnace body has two upper and lower chambers, the lower chamber is a secondary combustion chamber connected to the primary incinerator, and the lower chamber is a secondary incinerator formed into a heat radiation chamber. An exhaust gas cleaning device consisting of a tower-shaped scrubber consisting of a showering chamber and a packed bed combined above and below, and a washing water circulator next to it, is connected to the gas outlet of the heat radiation chamber of the secondary incinerator via a cyclone. The material is put into a ripening-resistant container 2'':i mounted on a trolley and sent to the primary incinerator, and the container taken out from the incinerator is
The system is characterized by a configuration in which the cooling process is performed using part of the circulating cleaning water of the exhaust gas cleaning system, and is located outside the outlet of the primary incinerator. The incinerator in the present invention has a tunnel furnace type primary incinerator and a cylindrical furnace wood divided into two upper and lower chambers, with the upper chamber serving as a secondary combustion chamber and the lower chamber serving as a heat dissipation chamber. The secondary incinerator has a gas inlet from the primary incinerator tangentially connected to the upper secondary combustion chamber, and the gas inlet is located near the gas inlet. A burner is arranged, and in the center of the secondary combustion chamber, there is a partially open conduction cylinder that stands upright so as to communicate with the heat radiation chamber, and inside the heat radiation chamber, there are many refractory blocks arranged in diagonal rows on a concentric circle. The body is provided intermittently. In addition, the partition wall that partitions the secondary combustion chamber and the heat dissipation chamber in the secondary incinerator is made of a partition wall with cooling water passages all over the inside.
The durability of the a-cut wall was increased.

Furthermore, the tower-shaped scrubber of the exhaust gas cleaning device according to the present invention has a cleaning chamber in the lowest layer, a packed bed chamber above it, and a sufficiently wide cleaning chamber above it,
The cleaning chamber is configured to have multiple spray nozzles that spray cleaning water radially and in multiple stages from a cleaning wood pipe placed in the center.

Function: In the incineration treatment equipment of the present invention, the materials to be treated are loaded onto a fire-resistant, open-topped container-mounted trolley, and then sent into a tunnel-type primary incinerator for incineration. The primary combustion gas generated in this primary incinerator is introduced into the secondary combustion chamber of the secondary incinerator, where it undergoes secondary combustion and decomposes harmful gas components at a higher temperature than the primary side. Let. In this combustion chamber, a swirling flow is given to the primary combustion gas introduced in order to enhance the combustion effect, and the swirling flow lengthens the residence time, and the primary combustion gas is re-burned by the burner, resulting in complete combustion. Let them do it. The high-temperature gas that burns in this secondary combustion chamber flows down from the upper opening of the conductor into the ripening chamber that communicates with it.
Communication between blocks placed in the heat dissipation chamber +1”+f
While moving, the gas exchanges heat with the block, and transfers from the gas outlet to the gas cleaning treatment device. The gas discharged from the outlet of the heat dissipation chamber of the secondary incinerator enters the cyclone, where the dust 1 is separated, and then enters the washing cavity of the column-shaped scrubber by 3', where it comes into contact with washing water. It will be gradually cooled and softened. i.e. the wash water and the filling that flows down while rising inside the packed bed? 4
The gas is gradually washed in contact with the surface, and then transferred to the washing chamber where it condenses on contact with washing water, descends in the packed bed, is collected, and is washed by the spray of washing water. teeth,
At the same time, the temperature drops and it is released into the atmosphere. Furthermore, since the cleaning water used in this cleaning treatment equipment is recycled, dust is gradually collected and the alkaline concentration decreases, so naturally new cleaning water must be replenished. However, the collected dust 1 becomes sludge and is difficult to dispose of, but in the present invention, the sludge does not settle and is disposed of, but the water with a high sludge concentration is taken out and subjected to primary incineration. The above-mentioned il7 slurry water is poured into the incinerated container mounted on the trolley pulled out from the furnace, and the container is used to cool the container. In this way, only the moisture evaporates through heat exchange when the sludge-containing water cools the high-temperature container and the metal objects left inside, and the dust 1 remains as it is, drying out. ．． Therefore, sludge water can be treated without separate treatment, and at the same time, incinerated metal residues can be quickly recovered and treated. Separately, the secondary incinerator is divided into upper and lower chambers, and a cooling water passage is installed in the land partition wall, and cooling water is constantly passed through it during operation to maintain the temperature inside the furnace. Even if the temperature rises, this partition wall will not accumulate heat. li'e-
》It can withstand long-term use even if exposed to high levels of tin. In addition, in the 1/2 channel type primary incinerator, the trolley carrying the containers to be treated is passed from one side to the other in a so-called "passing" manner, and the incinerated containers are output from the 1" side every required time. 7.You can pull out the cultivar and send in the new material to be processed from the entrance side in place of the 2nd h. Embodiment Hereinafter, one embodiment of the processing apparatus of the present invention will be explained with reference to the drawings.

Fig. 1 is a schematic diagram of the incineration processing apparatus of the present invention, in which 10 is a tunnel-type primary incinerator, 2f is a cylindrical secondary incinerator divided into two upper and lower chambers, and 16 is a tunnel-type primary incinerator. ．． 30 is an exhaust gas cleaning device, which includes a cyclone 31, an exhaust fan 32, a tower-shaped scrubber 35, and a cleaning 7}CQ% feeding ring a.
It consists of 40 horizontal sections. The primary incinerator 10 has a total length that can accommodate at least a plurality of container-mounted carts 15 into which the materials to be treated are loaded,
It is a tunnel type furnace with doors on the inlet and outlet sides.

When the material to be treated is sent to this primary incinerator 10 and incinerated, the material to be treated is made of heat-resistant material (for example, carbon steel plate, cast iron).
The container 16 is placed in a container 16 manufactured by
A number of sheets are loaded into the incinerator 10 from the entrance side and fed into the furnace, and after being incinerated, the cart 15 is pulled out one by one from the exit side for disposal. Incidentally, if the movable part of the cart 15 is dug into the floor of the furnace so that it is not easily exposed to direct flame, the loss fi will be reduced. Further, since the container 16 mounted on the trolley 15 will be used repeatedly, it may be lined with a fireproof material if necessary.
The secondary incinerator 20 is located at an intermediate position inside the furnace wood shaped like a circle.
It is divided into two upper and lower chambers, with the upper chamber serving as a secondary combustion chamber 21 and the lower chamber serving as a heat radiation chamber 22. The upper secondary combustion chamber 21 has a conductor [24] of an appropriate diameter erected from the partition wall 23 in the center, and the flue 11 from the upper part of the primary incinerator 10 is connected by narrowing the opening in the tangential direction. It is. Further, a burner 26 is arranged at a position appropriately away from the inlet 12 from the flue 11. Heat radiation chamber 22 at the bottom of the furnace body
is in communication with the secondary combustion chamber 21 through the conductive strip 2.1, and blocks 27 made of refractory material such as firebricks are disposed intermittently in a plurality of concentric rows inside. can be,
While the secondary combustion gas passes between the blocks 27,
It is designed to radiate heat and move to the gas outlet 28.

It is divided between the upper and lower parts of the secondary combustion furnace 20 like this:
The vertical wall 23 has a passage through which cooling water flows through the entire area except for the opening of the passage pipe 24, and the cooling water flows from the water passage pipe 23a. Cooling water is allowed to flow through the cooling l{ζ11-extension} 23c. Furthermore, if cooling water is allowed to pass through the block 27 in the heat radiation chamber 22, the heat exchange rate can be increased. The exhaust gas discharged from the heat radiation chamber 22 gas outlet 28 of the secondary incinerator 20 is transferred to the cycle 1 controller 31 of the exhaust gas cleaning treatment device 3o.
This cyclone 3 is sent through the duct 33.
The dust trapped in the exhaust gas in the exhaust gas is separated. This exhaust gas is sent through the ducts 1 and 34 by the exhaust fan 32 into the lowest cleaning chamber 36 of the tower-shaped scrubber 35. The tower-shaped scrubber 35 has, from the bottom, a cleaning chamber 36, a packed bed chamber 37 filled with Raschig rings, a cleaning chamber 38 for cleaning by spraying cleaning water, and a wire demister 39 to eliminate mistakes. The cleaning chamber 38 is assembled in the order of exhaust chambers 39 to collect and process the exhaust gas mistakes 1. Cleaning water injection pipe 38 with spray nozzles 38” radially attached
゜ is installed upright, and this wash water injection pipe 38' is connected to the wash water (4+, supply pipe 41
The well-known alkaline cleaning water is supplied, and the cleaning water that has been sprayed and gas-cleaned in the cleaning chamber 38 flows down from each hole in the perforated plate 37 and flows into the Raschig ring filling [37]. As it descends, a wetted surface is formed on the surface of the rash ring within the filling layer 37 to improve contact with the ascending exhaust gas. The cleaning water that has flown down the packed bed 37 flows directly into the cleaning chamber 36, is collected at the bottom of the cleaning chamber 36, and is returned to the water storage tank 42. At the bottom of this water storage tank 42, the dust 1. dropped by washing is allowed to settle and separate, and the highly concentrated sludge water that has become muddy is sent separately to the primary incinerator 45 through a pump 45.
Cooling water injection pipe 50 (second level 1
It is connected to the v-sho).・1.1 is a cleaning water filling ring 1 (a supply tank 1), which sucks the clarified 4ζ in the water storage tank 42, and connects it to the cooling water injection pipe 38' to supply water.

With this configuration, for example, electric wire scraps (including old electric wires, etc.) can be placed in the incineration container 1 (I) and placed in the white car 15.
and send it into the primary incinerator 10. In the primary incinerator 10, the synthetic resin portion is incinerated at a relatively low temperature (about 8 oC°). Combustion gas flows through the flue 11 into the secondary combustion chamber 21 of the secondary incinerator 20. On this occasion. Since the inlet l2 of the secondary combustion chamber 21 is configured in a tangential direction and with a narrowed opening, the primary combustion gas that has flowed into the secondary combustion chamber 21 becomes a swirling flow and does not stagnate in the secondary combustion chamber 21. The fuel flows and is re-burned by the burner 26 attached during this time. At this time, the flame of the burner 26 is ejected in an effective direction to come into contact with the inflowing gas, and can quickly react with the inflowing gas to increase the combustion rate. In this secondary combustion chamber 21, the combustion gas reaches a temperature of approximately 1200°C, and as is well known, harmful gas components are thermally decomposed. The combustion gas in the combustion chamber 21 rises while swirling, passes through the conductor tube 24 from the upper end opening of the conductor tube 24, and flows into the lower heat radiation chamber 22. In this radiation chamber 22, while the inflowing combustion gas swirls and flows between the blocks 27 provided intermittently in a plurality of concentric rows within the chamber, it comes into contact with the blocks 27, exchanges heat, and radiates the heat. Then, the gas temperature is lowered and the duct 1 is discharged from the outlet 28.
Move to 33. Therefore, if the cooling 71 is passed through the block 27 as described above, it is effective for lowering the gas temperature. This prevents heat from accumulating inside the walls through the walls, so even if there is a temperature difference between the upper and lower compartments,
Damage and wear can be prevented by controlling the temperature gradient using cooling water. The dust 1- contained in the exhaust gas sent out from the secondary incinerator 20 is first separated in the cyclone 31. The air is then sent into the lower cleaning chamber 36 of the tower-shaped scrubber 35 by the exhaust fan 32, passes through the packed bed chamber 37 and the cleaning chamber 38, and is discharged to the outside through the upper exhaust pipe. In this tower-shaped scrapper 35, in the cleaning chamber 38, a large number of spray nozzles 38° installed in the cleaning water injection pipe 38° installed in the center of the cleaning chamber 38 are spray-cleaned (TI water is applied to the Raschig rings in the packed bed 37). The exhaust gas flowing down through the cleaning chamber 38 and flowing countercurrent thereto comes into contact with the cleaning water and is subjected to desalination and desulfurization treatment by well-known means. The gas is supplemented by a wire demister 39 placed in the upper chamber of the cleaning chamber 38, and only the cleaned gas is discharged into the atmosphere. 117 type scrapper 35 The solids contained in the exhaust gas washed in the cleaning chamber 36 flow into the storage tank 42 through the drain pipe 36 at the bottom of the washing chamber 36, where they are sedimented and separated. A partition wall is provided in the water storage tank 42 so that the supernatant water can be pumped out using the Bonn Plu1. is separately sent to a cooling water injection part located outside the outlet of the primary incinerator 10 by a bomb 45, and is used to inject water into the incinerated container 16 taken out from the outlet of the primary incinerator 10 after incineration to cool it. The moisture in the cooling water containing sludge evaporates and only the solid matter remains in a dry state, adhering to containers and incinerated materials. Therefore, when collecting metal objects after this incineration process, the same amount of water is added to the exhaust gas. 'P solids can also be recovered, so they can be disposed of in the form of powder.Of course, dust collection means should be placed around this cooling water injection part to prevent it from dissipating as dust. It is preferable to use DIAL as the means. Effects of the invention: According to the present invention, when metal waste with synthetic resin attached is incinerated, the incineration process is performed in two stages to remove the metal parts. This is to facilitate the recovery and exhaust gas treatment of combustion gas, and in secondary incinerators, cooling water is passed through the QJ wall between the combustion chamber and the heat radiation chamber that lowers the gas temperature. We were able to create a device that reduces the loss of F's and increases the durability of the furnace body.Also, the sludge water such as Dust 1 generated in the exhaust gas cleaning process is used to collect metal scraps after incineration. By using it for cooling, it can be recovered as a dry solid, and the washing water can be recycled in a closed cycle.
This will allow for rationalization without the need for additional processing equipment for washing wastewater.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of the Uε waste incineration processing apparatus of the present invention;
Figure 2 is a plan view of the primary incinerator, Figure 1 is a plan cross-sectional view of the secondary combustion chamber of the secondary incinerator, and Figures 41 and 4 are plan cross-sectional views of the heat radiation chamber of the secondary combustion furnace. , No. 5 [2l is a partially enlarged cross-sectional view of the cut wall, and FIG. 10... Primary incinerator 11... Flue duct 12
...Combustion gas inlet 15...Dolly 16 for incineration of objects to be processed...Container 20 for incineration of objects to be processed...Secondary incinerator 21...Secondary combustion chamber 2
2... Heat dissipation chamber 23... Partition wall 23a
... Cooling water pipe 26 ... Burner 28 ... Gas outlet 31 ... Cyclone 33.3 = 1 ... Dak 1.36 ... Washing chamber 38 ... Washing chamber 38″...Spray nozzle 41]...Washing water circulation supply mechanism 41...Washing water supply pipe 44.45...Pump

Claims (1)

[Claims] 1. In an apparatus for incinerating industrial waste made of metal objects to which synthetic resin has adhered: The incinerator comprises a tunnel furnace-type primary incinerator and a cylindrical furnace body divided into two upper and lower chambers. , a secondary combustion chamber whose upper chamber is connected to the primary incinerator, and a secondary incinerator whose lower chamber is formed into a heat radiation chamber; An exhaust gas cleaning device consisting of a tower-shaped scrubber consisting of a showering chamber and a packed bed arranged above and below, and a cleaning water circulation mechanism is connected to the exhaust gas cleaning system; A mechanism is arranged outside the outlet of the primary incinerator to send the container to the primary incinerator, and to cool the container taken out from the incinerator using part of the circulating cleaning water of the exhaust gas cleaning device. ; An apparatus for incineration of waste adhering to synthetic resin. 2. In incineration equipment for industrial waste made of metal objects with synthetic resin attached: The incinerator consists of a tunnel-type primary incinerator, a cylindrical furnace body divided into two upper and lower chambers, and an upper chamber with a It consists of a secondary combustion chamber and a secondary incinerator whose lower chamber is formed as a heat radiation chamber; the secondary incinerator has a gas inlet from the primary incinerator connected to the upper secondary combustion chamber. is provided in the tangential direction, a burner is arranged near the gas inlet, and a conduction cylinder opening at the upper part is erected in the center of the secondary combustion chamber so as to communicate with the heat storage chamber. An apparatus for incineration of synthetic resin-adhered waste, characterized in that a large number of refractory blocks are disposed intermittently in double rows on concentric circles; 3. The incineration treatment apparatus for synthetic resin-adhered waste according to claim 2, wherein the partition wall between the secondary combustion chamber and the heat radiation chamber is provided with a cooling water passage therein for cooling.