KR101152613B1 - System for treating sludge or waste having a by-pass line - Google Patents

Abstract

PURPOSE: A device for treating sludge or waste having bypass line is provided to reduce air pollution by emitting only vapor after removing odor and VOC gas from a combustor without a separation facility. CONSTITUTION: A device for treating sludge or waste having bypass line comprises a combustor(200), a main drier(300), a carbonizing machine(400), a storing unit(600), a first line(L1), a second line(L2), and a bypass line(L4). A heat sensor is formed in a dry distillation gas inlet(211) of the combustor. A back fire protector is installed in a fifth line(L5) connected to a third line(L3). The third line connects a dry distillation gas outlet(413) and a dry distillation gas inlet.

Description

Sludge or waste treatment system with bypass line {System for treating sludge or waste having a by-pass line}

The present invention relates to a sludge or waste treatment system equipped with an energy-efficient and eco-friendly bypass line for treating food waste, various sludges, livestock waste, and various livestock wastes in large quantities by drying and carbonizing.

As the industry is advanced, the amount of food waste and various organic sludges is rapidly increased. Prohibited direct landfilling of various wastes (2003.7), most of the amount generated is treated with low-cost marine discharge (49%). However, sewage sludge and livestock manure are prohibited from dumping on January 1, 2012 and food waste from January 1, 2013. Accordingly, there is an urgent need for land treatment of sludge and various livestock wastes, and various studies have been conducted on environmentally-friendly and economical treatment methods to protect the environment. In particular, in recent years, a plan for recycling wastes into resources has been sought.

Representative methods of resourceization which are widely used in recent years are dry fuel, compost, and feed. Dry fueling is a method in which water from sludge and various livestock wastes is directly or indirectly heated to remove water and used as fuel. Depending on the type of waste, the calories produced by combustion after drying is different, so the calorific auxiliary materials must be mixed to secure stable calories, and there is a difficulty in storing due to the risk of odor, ignition, and hygroscopic ability.

Composting, which is a fermentation method using aerobic microorganisms in a state in which sludge and various livestock wastes contain appropriate moisture, requires considerable site, facility, and fermentation (fermentation) period, and thus economical efficiency is long due to prolonged treatment period. Second pollution such as odor and leachate is concerned, and the compost quality is different depending on the time and place of sludge and various livestock waste.

Feeding, which is widely used to treat food waste, is a method of treating dehydration, hot steaming, and drying. Source of origin There is a difference in composition and properties of food waste according to seasonal living standards, so it is difficult to homogenize the balance and quality of essential nutrients, and for this purpose, it is necessary to add insufficient effect aids through the component inspection of the final product, which leads to a problem of rising processing cost. have.

On the other hand, the final by-products can be used as adsorbents, sound absorbers, soil modifiers, cement raw materials, steel insulation, etc. According to the drying and carbonization method with high utilization and storage, sludge and livestock waste can be completely sterilized, odor, Dust, smoke, etc. do not occur, it is environmentally friendly and can reduce the possibility of civil complaints can solve the problems described above. On the other hand, the facilities for treating sludge and various livestock wastes are bulky and high in processing cost by drying and carbonization methods such as heat exchange facilities to reduce the treatment cost by improving thermal efficiency, and thermal oxidation facilities to remove odors and various generated gases. Holding it.

In general, the sludge and various livestock wastes are treated by the drying and carbonization process, and the sludge and various livestock wastes are dried at a water content of about 20% suitable for carbonization and carbonized in a carbonizer. In the drying process, the viscosity of the sludge and various livestock wastes decreases, causing adhesion to the transfer device and the wall of the dryer, causing the dryer to break down, and aggregating of sludge and various livestock wastes. Difficult to dry in a dry state. In order to overcome this problem, separate dry matter and additives may be mixed with wet sludge and various livestock wastes to solve sticking phenomenon or agglomeration phenomenon. This increases the amount of sludge and various livestock waste to be treated as well as a problem that a separate mixer must be installed before the drying process. In the carbonization process, high temperature hot air (800 ~ 1000 ℃) can partially incinerate sludge or dry matters of various livestock wastes to incinerate ash, and burn energy generated through the heat exchanger while burning and removing dry gas generated. In case of use, backflow of dry gas may occur due to backflow of gas and abnormal generation of dry gas. In addition, the carbonization temperature is not constant during the carbonization process, and thus it is impossible to make a high-quality carbide having a constant quality, thereby decreasing the utilization of carbides and deteriorating durability due to thermal deformation of the carbonizer. In addition, since a post-treatment facility is installed and operated to spray various kinds of harmful gases and foreign substances that are environmental pollutants generated in each process and collect dust, a large land is required. There is a problem that a double processing cost is required because it must be processed again.

The present invention is to improve the above-mentioned problems, it consists of a secondary dryer, a main dryer, a process leading to a carbonizer and the like. It is intended to simplify the equipment so that drying and carbonization can be performed only with the most basic equipment without the equipment necessary for the pretreatment of sludge or waste, the removal of odor and various harmful gases, and the post-treatment to remove environmental pollutants. In order to prevent the sticking and agglomeration of sludge or waste, the drying process is carried out in two stages in consideration of the drying characteristic, which increases in viscosity depending on the water content of sludge or waste. The indirect heat pass-through tube of the carbonizer using indirect heat has a double structure. The reason for this is to maintain a constant quality carbide. The dry gas generated in this process is purified by removing tar, chute, and water through the cyclone and cold trap, so that combustion can be efficiently performed in the combustor, thereby suppressing the production of environmental pollutants by incomplete combustion. The rational arrangement of each device and recovery of combustion of dry gas generated during carbonization process are used as energy source of drying process, maximizing energy efficiency, eliminating odor and VOC gas from combustor, and without pure wastewater treatment facility. It is to provide a sludge or waste treatment system that is eco-friendly and can be continuously driven by discharging only water vapor into the atmosphere, so that a large amount of sludge or waste can be economically, sanitarily and efficiently treated.

The present invention attempts to solve the problem of backfire due to the dry gas flowing into the combustor when the dry gas generated in the carbonizer is introduced into the combustor and used as an auxiliary fuel for generating heat used in the drying process. This is to improve durability by preventing thermal deformation of a screw and the like provided in the carbonization machine.

The present invention includes a burner 100 and a dry gas inlet 211 on one side, and a combustion waste heat inlet 221 on one side surrounding the combustion tube 210 and the combustion tube 210 having the combustion tube outlet 212 on the other side. Combustor 200 having a double cylindrical structure including an outer cylinder 220 having a hot air outlet 222 on the other side; A waste inlet 310 into which sludge or waste is introduced, a waste outlet 320 through which the sludge or waste introduced into the waste inlet 310 is dried, and a hot air inlet communicating with the combustion tube outlet 212 to introduce hot air ( 330, and a dry waste heat outlet 340 through which hot air introduced into the hot air inlet 330 flows out, and the main dryer 300 to which the introduced sludge or waste is dried; Dry matter inlet 411 through which the dried product is dried through the main dryer 300, a carbide outlet 412 through which the injected dry matter is carbonized, and dry gas discharge hole 413 for discharging dry gas generated during carbonization. And a carbonization pipe 410 including a first inlet 421 through which hot air flows in communication with the hot air outlet 222 of the combustor 200, and a second outlet 424 for discharging the introduced hot air. A carbonizer 400 including an outer barrel 420; And a carbide storage means 600 for storing carbides flowing out of the carbide outlets 412 of the carbonizer 400, wherein the hot air outlet 222 of the combustor 200 and the carbonizer 400 The first line (L1) for communicating the first inlet 421 and the second line (L2) provided on the side of the second discharge port (424) through which the hot air circulated inside the carbonizer 400 is discharged from each other. Bypass line is provided, characterized in that the bypass line (L4) for further communication.

On the other hand, the present invention has a burner 100 and a dry gas inlet 211 on one side and the combustion tube 210 and the combustion tube 210 having a combustion tube outlet 212 on the other side and the dry waste heat inlet 221 on one side Combustor (200) having a double cylindrical structure having an outer cylinder 220 having a hot air outlet 222 on the other side; A waste inlet 310 into which sludge or waste is introduced, a waste outlet 320 through which the sludge or waste introduced into the waste inlet 310 is dried, and a hot air inlet communicating with the combustion tube outlet 212 to introduce hot air ( 330, and a dry waste heat outlet 340 through which hot air introduced into the hot air inlet 330 flows out, and the main dryer 300 to which the introduced sludge or waste is dried; Dry matter inlet 411 through which the dried product is dried through the main dryer 300, a carbide outlet 412 through which the injected dry matter is carbonized, and dry gas discharge hole 413 for discharging dry gas generated during carbonization. Carbon tube 410 including a, and the first inlet 421, the first inlet 421 through which the hot air flows in communication with the hot air outlet 222 of the combustor 200, the first outlet 422 is discharged, the second Carbonizer 400 including an outer cylinder 420 including a second inlet 423 for re-introducing hot air discharged through the first outlet 422 and a second outlet 424 for discharging the re-introduced hot air. ); And a carbide storage means 600 for storing carbide flowing out of the carbide outlet 412 of the carbonizer 400, wherein the hot air outlet 222 and the first inlet 421 of the combustor 200 are stored. Bypass line for communicating the first line (L1) for communication and the second line (L2) provided on the side of the second discharge port 424 through which the hot air circulated inside the carbonizer 400 is discharged ( L4) is further provided.

The present invention further includes an auxiliary dryer 500 having a double cylinder structure including an inner cylinder 510 and an outer cylinder 520 surrounding the inner cylinder 510, wherein the inner cylinder 510 is sludge or Waste inlet 511 into which waste flows, waste dried by heating is flowed out, waste outlet 512 communicating with waste inlet 310 of the main dryer 300, and dry waste heat transfer of the main dryer 300. Auxiliary dry waste heat inlet 513 and auxiliary dry waste heat outlet 514 for introducing and draining the dry waste heat flowing out of the outlet 340, wherein the outer cylinder 520 is the second of the carbonizer 400 In communication with the outlet 424, the carbonized heat inlet 521 into which the carbonized heat discharged from the second outlet 424 of the carbonizer 400 flows in and the carbonized heat outlet 522 for releasing the introduced carbonized heat. It characterized in that it further comprises.

The upper portion of the carbonizer 400 of the present invention is further provided with a dry gas collection tank 430 for collecting the dry gas discharged from the dry gas discharge hole 413, in the dry gas collection tank 430 The dry gas discharged may flow into the dry gas inlet 211 of the combustor 200.

The present invention is further provided with a third line (L3) for communicating the dry gas discharge hole 413 and the dry gas gas inlet 211, the dry gas collection tank 430 on the third line (L3) A cyclone 1300 and a cold trap 1400 may be provided to purify the dry gas discharged from the gas.

Inside the combustion tube 210 of the present invention, a preheating space portion for raising a temperature suitable for ignition of the dry gas flowing into the combustion tube 210 from the dry gas inlet 211 to the inside of the combustion tube 210 and inducing a pressure above a predetermined pressure 213 may be further provided.

A heat sensor 230 is further provided at the dry gas inlet 211 side of the combustor 200 of the present invention, and a flashback arrestor 1700 for preventing backfire includes the dry gas discharge hole 413 and the dry gas inlet. It may be further provided through the fifth line (L5) connected to the third line (L3) for communicating with each other (211).

The outer cylinder 420 of the carbonizer 400 of the present invention is discharged to the first inlet 421 and the hot air discharged to the first outlet 422 and the first outlet 422 is discharged to the second inlet 423 ) May be partitioned into a first passage tube 425 and a second passage tube 426 so that the hot air flowing into the second outlet 424 and flowing out into the second discharge port 424 is not mixed inside the outer tube 420.

The guide plate 523 may be provided between the outer cylinder 520 and the inner cylinder 510 of the auxiliary dryer 500 of the present invention so that the introduced carbonized heat flows while drawing a spiral.

The present invention further includes a seventh line (L7) for transferring the carbide flowing out of the carbide outlet 412 of the carbonizer 400 to the carbide storage means 600, the seventh line (L7) Further comprising a screw (L7-2) for transporting carbide and a screw shaft (L7-1) for rotating it, water may be injected into the seventh line (L7).

The present invention can take full advantage of the energy produced in one burner. Although the amount and quality of dry gas recovered in the carbonization process vary depending on the type of sludge or waste to be dried and carbonized, the energy efficiency of the overall process is somewhat different. %) Improves waste disposal costs by about 60% compared to other facilities, and various facilities such as thermal oxidation (RTO) equipment to remove odors, exhaust gas purification facilities for environmental protection, and wastewater purification facilities. It is a drying and carbonization facility that simplifies the facility and reduces the cost of manufacturing and installing the facility by about 50% compared to other facilities.

Using the present invention specifically, the following effects can be obtained. First, since the sludge or waste is treated by a drying and carbonization method that can reduce the reduction rate by about 90%, the amount of sludge or waste can be drastically reduced, and by-products can be utilized. Second, processing efficiency is high because continuous driving is possible. Third, odor, harmful gas (VOC), dioxin and white smoke are removed without the use of fuel or thermal oxidation (RTO) facility, so that sludge or waste can be treated economically and environmentally. Fourth, most of the generated dust is adsorbed and removed from the wet dry matter of the auxiliary dryer to prevent environmental pollution, and the life of the cyclone can be extended, thereby reducing the repair cost. Fifth, the equipment cost is low due to the simplification of the process, and the sludge or waste disposal cost is reduced by maximizing energy efficiency due to the rational arrangement of the equipment.

In addition, the facility can be safely operated due to the heat sensor, the flashback arrestor and the bypass line, and the durability is high by preventing thermal deformation of the screw of the carbonizer.

1 is a conceptual diagram according to an embodiment of the present invention
2 is a conceptual diagram according to a second embodiment of the present invention;
3 is a conceptual diagram according to a third embodiment of the present invention;
4 is a flow chart of waste purification in a system according to the present invention.
5 is a flow chart of hot air in the system according to the present invention.
6 is a flow diagram of dry gas in the system according to the present invention.
7 is a conceptual diagram illustrating that the bypass line and the flashback arrestor are provided in the system according to the present invention.
8 is a conceptual diagram illustrating a carbonizer in a system according to the present invention.
9 is a conceptual diagram showing a configuration for preventing thermal deformation of the carbonizer in the system according to the present invention
10 is a conceptual diagram according to a fourth embodiment of the present invention.
11 is a conceptual diagram showing a carbide transport line of the present invention

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

Sludge or waste changes its properties and properties according to the water content, and in particular, the viscosity increases, so the drying method has to be adapted to the drying characteristics. In order to carbonize sludge or wastes effectively, the dried product after drying should not be aggregated but present in a finely crushed state. In general, in the high water content section with high water content, drying is conducted by using conductive heat, and in the low water content section, the waste may be dispersed to maximize the drying efficiency. In order to achieve this purpose, the drying process may be carried out by dividing into two parts, the main dryer 300 and the auxiliary dryer 500.

With reference to the accompanying drawings, it will be described for each of the components and then to the system they are interconnected.

The auxiliary dryer 500 will be described in detail.

Referring to FIG. 3, the auxiliary dryer 500 includes a cylindrical inner cylinder 510 and an outer cylinder 520 to simultaneously utilize direct heat and indirect heat. The guide plate 523 which is a long plate-shaped body was arrange | positioned spirally between the inner and outer cylinders 510 and 520.

Waste is introduced into the waste inlet 511 of the auxiliary dryer 500, dried, and then discharged to the waste outlet 512 via the inner cylinder 510.

Hot air having a temperature of about 500 ° C. from the second outlet 424 of the carbonizer 400 to be described later is introduced into the carbonized waste heat inlet 521 of the auxiliary dryer 500, and is discharged to the carbonized waste heat outlet 522. ) Can be used as indirect heat for drying wastes. In addition, the dry waste heat (300 ~ 400 ℃) flowing out of the dry waste heat outlet 340 of the main dryer 300 to be described later into the auxiliary dry waste heat inlet 513 of the auxiliary dryer 500, auxiliary dry waste heat outlet ( 514) to be used as direct heat for drying wastes.

The combustor 200 and the main dryer 300 will be described in detail.

1 to 3, the dry gas generated during the carbonization process in the carbonizer 400 is discharged from the dry gas discharge hole 413 of the carbonizer 400, and the dry gas inlet of the (exposure prevention) combustor 200 is prevented. Flows to 211. In the combustor 200, the heat of the burner 100 provided on one side flows, and the combustion tube 210, the main dryer 300 and the auxiliary dryer 500, or the main dryer (100) which burns dry gas by the heat of the burner 100. 300 is a dual structure consisting of an outer cylinder 220 having a hot air passage 224, that is, a space through which water vapor, odor, and various harmful gases generated during the drying process are passed (main dryer 300 of FIG. 1). Gas discharged from the dry waste heat outlet 340 may be introduced into the dry waste heat inlet 221, the gas discharged from the dry waste heat outlet 340 of the main dryer 300 of FIG. After flowing the inner cylinder 510 of 500 may be introduced into the dry waste heat inlet 221). The space between the combustion tube 210 and the outer cylinder 220 has a spiral spiral portion 223 to pass various materials generated during drying in the main dryer 300 and / or the auxiliary dryer 500. These materials cool the combustor 200 temperature of 1200-1300 ° C. to moderate carbonization. At the same time, water vapor from various materials introduced into the hot air passage 224 becomes superheated steam and flows out to the hot air outlet 222 and enters the first inlet 421 of the carbonizer 400 to be used as indirect heat of the carbonization process. .

Meanwhile, referring to the enlarged view of FIG. 2, a preheating space part 213 is provided inside the combustion tube 210 to adjust an amount of dry gas flowing into the combustion tube 210 from the dry gas inlet 211. do. The preheating space portion 213 is to increase the temperature of the gas flowing into the dry gas inlet 211 to a temperature suitable for ignition and to be allowed to flow into the combustion tube 210 side more than a predetermined pressure to complete combustion of dry gas. to be.

Referring to Figures 1 to 3, various harmful gases and odors are moved to a speed of 20m / sec in the hot air passage 224, it is preferably designed to stay about 3 seconds to remove most of the thermal decomposition. Dioxins, many of which are harmful to environmental pollutants, are destroyed by staying in the hot air passage 224 for two seconds or more in a high-temperature atmosphere of a combustor, so that only pure water vapor that does not pollute the air can be released into the atmosphere. Various gases injected may ignite past the flash point. In order to prevent the combustor from being damaged by the explosion pressure, it is preferable to narrow the space between the spiral portions 223 on the side of the dry gas inlet 211 and to widen the space between the spiral portions 223 on the hot air outlet 222 side. In addition, it is preferable that holes (not shown) are perforated in the spiral portion 223 to absorb the pressure of the high-pressure air that is expanded due to the high temperature in the hot air passage 224.

1 to 3, the main dryer 300 includes a waste inlet 310 through which sludge or waste is introduced, a waste outlet 320 through which waste that has been dried is discharged, and hot air into which the hot air of the combustor 200 flows. Inlet 330 and a dry waste heat outlet 340 for discharging the hot air used for drying.

Referring to FIG. 1 or 2, hot air generated by the combustion pipe 210 may be introduced through the hot air inlet 330 and discharged through the dry waste heat outlet 340, and then introduced into the dry waste heat inlet 221. . Alternatively, referring to FIG. 3, hot air generated by the combustion tube 210 is discharged through the dry waste heat outlet 340, introduced into the auxiliary dry waste heat inlet 513, and used as the direct heat of the auxiliary dryer 500. After it is discharged to the auxiliary dry waste heat outlet 514 may be introduced into the dry waste heat inlet 221 of the combustor 200.

A waste dispersion device (not shown) may be provided between the auxiliary dryer 500 and the main dryer 300. Through the waste dispersing apparatus (not shown), the sludge or waste having a large surface area is introduced into the waste inlet 310 of the main dryer 300. The injected waste has a water content of 15? In the main dryer 300 using hot air from the combustion pipe outlet 212 of the combustor 200. It is dried until it becomes about 20%.

The carbonizer 400 will be described in detail.

1 to 3, the carbonizer 400 surrounds the outer circumferential surface of the carbonization pipe 410 and the carbonization pipe 410 for carbonizing dry matter, and an outer cylinder 420 for allowing hot air to pass therebetween. It has a formed double structure. The carbonizer 400 is composed of two parts such as a screw 414 and a screw shaft 415 for discharging the dry matter flowing into the dry matter inlet 411 to the carbide outlet 412. In addition, the carbonizer 400 includes a dry gas discharge hole 413 for discharging the gas generated in the carbonization process and a dry gas collection container 430 for collecting the gas discharged from the dry gas discharge hole 413. It is provided. The dry gas discharged from the dry gas collection tank 430 and introduced into the dry gas inlet 211 is completely combusted in the combustor 200 to suppress the generation of carbon monoxide (CO), which is an air pollutant, and the auxiliary fuel during the drying process. Used as

The high temperature hot air passing through the hot air passage 224 of the combustor 200 flows into the first inlet 421 of the carbonizer 400, and the introduced hot air passes through the first through pipe 425. The incoming hot air is 800? It is about 950 degreeC.

Furthermore, referring to FIG. 8, inlet and outlet ports 415-1 and 415-2 are provided for inflow and outflow of external air into the screw shaft 415, thereby preventing thermal deformation of the screw 414 and the screw shaft 415. To prevent it. By introducing the cool outside air into the screw shaft 415 to prevent thermal deformation due to high heat to increase the durability of the carbonizer (400).

Meanwhile, referring to FIG. 1, in the case of the outer cylinder 420 of the carbonizer 400, the hot air flowing through the first inlet 421 passes through the first through tube 425 and the second through tube 426. It may be discharged to the second outlet 424. The discharged hot air may be introduced into the cyclone 700 to purify the discharge to the outside as shown in FIG. On the other hand, as shown in FIG. 2, the hot air flowing through the first inlet 421 is discharged to the first outlet 422 via the first passage 425. The discharged hot air may be introduced into the second inlet 423 provided in the outer cylinder 420, and then discharged into the second outlet 424 (see L6 of FIG. 2). It is to recycle the hot air from the outer cylinder (420).

The hot air discharged to the second outlet 424 may be directed to the cyclone 700 (see FIG. 1 or 2), or may be introduced into the carbonized waste heat inlet 521 of the auxiliary dryer 500 as illustrated in FIG. 3. .

In addition, it is preferable to use a flexible flange (not shown) in all the hot air line (L1) and the drying inlet line (line connected to the reference number 411) supplied to the carbonizer to prevent the degeneration of the carbonizer due to high heat.

Meanwhile, as illustrated in FIG. 9, the rail 441 is installed on the base 440 supporting the carbonizer 400 and the roller 450 is installed on the carbonizer 400. When stretched, it is possible to prevent thermal deformation of the carbonizer itself due to the roller 450 or the like.

The waste treatment process will be described in detail as follows.

The sorting machine 1000, the crusher 1100, etc. of FIG. 1 or 2 are difficult to be treated by the drying and carbonization process in the waste (various sludge, food waste, and livestock waste, etc., used in the same meaning below) by the drying and carbonization method. It is to increase the utilization of the equipment by adding a pretreatment process for removing foreign matters.

Referring to Figures 1 to 3, the movement route until the carbide is made as the final product of the waste is a pre-treatment process, that is, a process required to facilitate the drying process, that is, the sorter 1000, such as vinyl, cutlery Remove metals and the like. If the wastes are then agglomerated, the drying efficiency can be reduced. In order to increase the drying efficiency, the waste is shredded to a size suitable for drying by using the shredder 1100 and sent to the input hopper 900. The process of passing through the sorting machine 1000 and the crusher 1100 is limited to the case of processing food waste, and may not be applied in the case of dewatered sludge or animal waste.

Here, the sorter 1000 refers to various devices capable of removing foreign substances such as a vinyl sorter and a magnetic conveyor in the market. In addition, since the shredder 1100 for shredding is a general technique used throughout the industry, description thereof will be omitted. Various sludges and condensate other than food are brought in a dehydrated form with a water content of about 80%, and the amount of foreign matters is small, and the size of particles is relatively small and uniform, so that the selection and crushing process may be omitted.

Referring to Figure 4, the movement of the waste and the like from the input hopper 900 to the auxiliary dryer 500 is carried out by a screw (not shown) of the input hopper 900 is preferably quantitatively injected. Waste injected into the auxiliary dryer 500 from the input hopper 900 is manufactured to improve heat flow in the auxiliary dryer 500, and is mixed and transported by a horizontally installed screw (not shown) to increase viscosity and agglomeration. Dry up to about 55% moisture content to avoid the glue zone region. The dried product is dispersed into the main dryer 300 through a waste dispersing device (not shown), and dried to a water content of about 15 to 20%. In the case of using the auxiliary dryer 500, as shown in FIG. 3, the second line L2 continued from the second outlet 424 is connected to the waste heat inlet 521.

Here, when it is not necessary to go through the auxiliary dryer 500 in consideration of the water content of the waste of the input hopper 900, the waste may be introduced into the main dryer (300). In this case, as shown in FIG. 1 or 2, the second line L2 continued from the second outlet 424 side is connected to the cyclone 700.

1 to 4, the dry matter dried in the auxiliary dryer 500 and the main dryer 300 is stored in the hopper 1200 (which may be omitted if necessary), and the dry matter of the carbonizer 400 is determined by quantity. It is injected into the inlet 411. At this time, the hot air passing through the hot air passage 224 of the combustor 200 flows into the first inlet 421 and is utilized as indirect heat. The carbonized carbon discharged through the carbide outlet 412 is transferred to the carbide storage means 600.

On the other hand, the carbide carbonized and discharged through the carbide outlet 412 has a very low moisture content there is a risk of self-ignition. In order to prevent this, it is preferable to transfer to the carbide storage means 600 through a transfer screw (L7-2) with a water injection device. Referring to FIG. 11, a section from the carbonizer 400 to the carbide storage means 600, that is, the seventh line L7 for transferring the carbide to the carbide storage means 600 includes a screw L7-1 and It is preferable to have the screw shaft L7-2 for rotating it. As the screw L7-1 rotates, the carbide is transferred to the carbide storage means 600, and the moisture is supplied in the seventh line L7 to adjust the moisture content of the transferred carbide to about 6% to 8%. desirable. As a water supply method, as shown in FIG. 11, water is supplied to the screw L7-1 or the screw shaft L7-2 to pierce the screw L7-1 or the screw shaft L7-2 with rotation. Various methods, such as water to be injected into the hole (not shown), the method of supplying water to the inlet side of the seventh line (L7) to mix the water with the carbide with the rotation of the screw shaft (L7-2) Will be there.

The hot air flow that can maximize energy efficiency by making the most of the waste heat used in each process will be described in detail.

Referring to FIG. 5, hot air generated in the combustor 200 serves as direct heat of the main dryer 300 (1 in FIG. 5), and high temperature steam, dust, and various waste gases generated in the auxiliary dryer 500 may be used. In the process used as direct heat, the dust is adsorbed to the dry matter, the waste heat of the main dryer 300 is lost energy (2 in Figure 5). Again, these gases lost energy passes through the hot air passage 224 of the combustor (3 in Fig. 5). Energy is radiated by the radiant heat of the combustor 200 to carbonize the dry matter by indirect heat while passing through the first through pipe 425 of the carbonizer 400 (4 in FIG. 5). In addition, the waste heat generated after carbonization passes through the outer cylinder 520 of the auxiliary dryer 500 (⑤ in FIG. 5) to be used as indirect heat of the auxiliary dryer 500, and is discharged to the atmosphere through the cyclone 700 ( ⑥) in FIG. At this time, the temperature of the water vapor emitted to the atmosphere is about 250 ℃ does not generate white smoke, and since the discharge of the pure state in which various impurities are removed to the atmosphere it is possible to prevent environmental pollution.

In addition, the main dryer 300 may generate dust, water vapor, odor and various harmful gases (VOC) during the drying process. The generated dust is adsorbed and removed from the dry matter in the auxiliary dryer 500. Wet air including water vapor generated during the drying process of the main dryer 300 has a high dural heat transfer coefficient at a high temperature above the inversion point temperature, so that the drying speed is increased more than when using the air dryer. Increase the effect. Odor, harmful gases, etc. generated during the drying process are thermally decomposed in the radiant heat section of the hot air passage 224 between the combustion tube 210 and the outer cylinder 220 of the combustor 200 to be described later. Water vapor generated during the drying process passes over the hot air passage 224 between the combustion tube 210 and the outer cylinder 220 of the combustor 200 and becomes superheated steam and enters the first inlet 421 of the carbonizer 400. do. The superheated steam is used as indirect heat of the carbonizer 400 and then flows into the waste heat inlet 521 of the auxiliary dryer 500 to be used as indirect heat of the auxiliary dryer 500.

With reference to FIG. 10, another embodiment will be described. When treating waste with this plant, it is possible to make minor changes to the construction and energy flow of the drying and carbonization plant if it is not desired to use carbide as a by-product of the waste and to dry it for a specific purpose. In detail, all the processes up to the waste treatment by the main dryer 300 are as described above. The carbide storage means 600 may be utilized as a dry storage facility as it is. Alternatively, the hopper 1200 may be utilized as a dry storage facility. Referring to FIG. 10 for the flow of energy, the hot air passing through the hot air passage passage 224 of the combustor 200 may be used instead of using the indirect heat of the carbonization machine 400. 521), everything except that it is changed to be used as indirect heat is as described above. Of course, the phenomenon occurring in each process and the process of removing environmental pollutants are also the same as the waste drying and carbonization process.

The dry gas flow is further described.

Referring to FIG. 6, the dry gas generated in the carbonizer 400 passes through the dry gas collection tank 430 (① of FIG. 6), and a purification process for removing tar and chute included in the dry gas includes cyclone. 1300 and the cold trap 1400 are purified and flowed into the dry gas inlet 211 of the combustor 200 through the fan 1500 (2 in FIG. 6). The dry gas introduced into the combustor is combusted in the combustor 200 and mixed with the hot air of the combustor 200 to act as direct heat of the main dryer 300 (3 in FIG. 6), and high temperature steam, dust and In the process in which various waste gases are used as direct heat of the auxiliary dryer 500, dust is adsorbed to the dry matter, and the waste heat of the main dryer 300 loses energy (4 in FIG. 6). Again, the energy lost gas passes through the hot air passage 224 of the combustor (5 in FIG. 6) to obtain energy by radiant heat of the combustor 200, thereby opening the first pass pipe 425 of the carbonizer 400. While passing through the indirect heat carbonizes the dry matter (6 in Figure 6). In addition, the waste heat generated after carbonization passes through the outer cylinder 520 of the auxiliary dryer 500 (⑦ of FIG. 6) to be used as indirect heat of the auxiliary dryer 500, and is discharged to the atmosphere through the cyclone 700 ( ⑧) of FIG.

Environmental pollution should be prevented by suppressing the generation of environmental pollutants in the waste disposal process. The method for reducing important environmental pollutants will be described in detail. In the case of dioxins, the water is carbonized in a state where waste water is completely removed, and the inside of the carbonizer 400 is kept in a low oxygen reducing atmosphere to minimize the generation of dioxins. . Dioxin generated during the drying process is designed to be destroyed for 2 seconds or more in the hot air passage 224 of the combustor 200. Since carbon monoxide (CO) is mostly generated by incomplete incomplete combustion of a fuel for energy, it can be suppressed by supplying a sufficient amount of oxygen. In particular, in order to completely burn the dry gas recovered from the carbonizer 400, the air dehumidified from the outside is introduced to the combustor 200 to be burned together with the dry gas. The other exhaust gas is designed to stay in the hot air passage 224 of the combustor 200 at a rate of 20 m / sec for about 3 seconds to remove odor and harmful gases by thermal decomposition. Dust generated in each process is designed so that the dust flows to be mostly absorbed and removed by the dry matter of the auxiliary dryer 500, and the discharge to the outside is carried out through the cyclone 700 so that the cause of environmental pollution due to dust is removed. .

Meanwhile, referring to FIGS. 1 to 3, 6, and 7, the cyclone 1300, the cold trap 1400, and the third line L3 connect the dry gas discharge hole 413 and the dry gas gas inlet 211. Arrange the fan 1500. In addition, it is preferable that a valve 1600 is provided between the cold trap 1400 and the fan 1500 so as to introduce outside air, more preferably, dehumidified air. This is to remove the chute and tar contained in the dry gas generated during the drying process and then flow into the dry gas gas inlet 211.

Means for solving the problems that may be backfired in the combustor 200 are detailed.

Referring to FIG. 7, the dry gas generated in the carbonizer 400 passes through the dry gas collection tank 430 and then flows into the dry gas inlet 211 of the combustor 200 as described above. On the other hand, when flowing into the dry gas inlet 211, due to the heat of the combustor 200 of about 1200 ° C or more, the possibility of backfired to the third line (L3) side is sufficient.

Referring to FIG. 7, the first line L1 from the combustor 200 to the carbonizer 400 and the carbonizer 400 are connected to the auxiliary dryer 500 in preparation for backfire (the conditional regulator 500). Bypass line (L4) for interconnecting the second line (L2) which is not connected to the outside air can be communicated with) is provided. In addition, the heat detection sensor 230 is provided on the side of the dry gas inlet 211 of the combustor 200, and the dry gas discharge hole 413 or dry gas collection tank through which the dry gas generated in the carbonizer 400 is discharged. A pressure sensor 460 is provided on the outlet side of the 430. The flashback arrestor 1700 was installed to receive the numerical values of the thermal sensors and the pressure sensors 230 and 460 and adjust the flashback prevention based on the values.

When the burner 200 is backfired in the combustion process of the dry gas, or when the carbonization proceeds non-ideally carbonization during the carbonization of the dry matter, the heat sensor 230 and the pressure sensor 460 By primarily detecting this in the), the backfire prevention device 1700 may secure the stability of the backfire prevention and the carbonizer 400 by playing the following role.

Referring to FIG. 7, the valve V installed in the third line L3 is blocked to prevent dry gas from being supplied to the combustor 200 anymore, and the power of the fan 1500 of the third line L3 is blocked. At the same time as blocking the nitrogen in the flashback arrestor (1700) is injected into the combustor 200 instead of dry gas. The hot air injected into the carbonizer 400 is blocked through the first line L1 and supplied to the second line L2 through the bypass line L4.

After the hot air supplied to the carbonizer 400 is blocked, dry gas generated in the carbonizer 400 is discharged to the outside through a separate valve (not shown) installed in the cold trap 1400 (cold in FIG. 7). The trapped portion is shown by a dotted line), and nitrogen gas is injected into the carbonizer 400. Thereafter, the hopper 1200 blocks the dry matter from being supplied to the carbonizer 400.

The flashback arrestor 1700 and the bypass line L4 may operate simultaneously according to the operation of the heat sensor 230 and the pressure sensor 460, or in contrast, may operate according to a user's arbitrary operation.

Terms used in the present invention should not be interpreted in a conventional dictionary sense, but in a meaning consistent with the technical spirit of the present invention. In addition, it is to be understood that there are examples of various equivalent modifications that may be substituted for the contents described in the present invention.

100: burner 200: burner
300: main dryer 400: carbonization machine
500: auxiliary dryer 600: carbide storage means
700: cyclone
900: Input Hopper 1000: Separator
1100: shredder 1200: hopper

Claims (10)

A burner 100 and a dry gas inlet 211 are provided at one side and a combustion tube 210 having the combustion tube outlet 212 at the other side and the combustion tube 210 are provided at one side and a dry waste heat inlet 221 is provided at the other side. A combustor 200 having a double tubular structure including an outer cylinder 220 having a hot air outlet 222 therein;
A waste inlet 310 into which sludge or waste is introduced, a waste outlet 320 through which the sludge or waste introduced into the waste inlet 310 is dried, and a hot air inlet communicating with the combustion tube outlet 212 to introduce hot air ( 330, and a dry waste heat outlet 340 through which hot air introduced into the hot air inlet 330 flows out, and the main dryer 300 to which the introduced sludge or waste is dried;
Dry matter inlet 411 through which the dried product is dried through the main dryer 300, a carbide outlet 412 through which the injected dry matter is carbonized, and dry gas discharge hole 413 for discharging dry gas generated during carbonization. And a carbonization pipe 410 including a first inlet 421 through which hot air flows in communication with the hot air outlet 222 of the combustor 200, and a second outlet 424 for discharging the introduced hot air. A carbonizer 400 including an outer barrel 420; And
Carbide storage means 600 for storing the carbide flowing out of the carbide outlet 412 of the carbonizer 400,
Hot air circulated through the first line L1 for communicating the hot air outlet 222 of the combustor 200 and the first inlet 421 of the carbonizer 400 and the carbonizer 400 is discharged. Bypass line (L4) is further provided for communicating with each other the second line (L2) provided on the side of the second discharge port 424,
A heat detection sensor 230 is further provided on the side of the dry gas inlet 211 of the combustor 200, and a flashback arrestor 1700 for preventing backfire is provided with the dry gas discharge hole 413 and the dry gas inlet 211. Sludge or waste treatment system having a bypass line, characterized in that it is further provided through a fifth line (L5) connected to the third line (L3) for communicating with each other.
A burner 100 and a dry gas inlet 211 are provided at one side and a combustion tube 210 having the combustion tube outlet 212 at the other side and the combustion tube 210 are provided at one side and a dry waste heat inlet 221 is provided at the other side. A combustor 200 having a double tubular structure including an outer cylinder 220 having a hot air outlet 222 therein;
A waste inlet 310 into which sludge or waste is introduced, a waste outlet 320 through which the sludge or waste introduced into the waste inlet 310 is dried, and a hot air inlet communicating with the combustion tube outlet 212 to introduce hot air ( 330, and a dry waste heat outlet 340 through which hot air introduced into the hot air inlet 330 flows out, and the main dryer 300 to which the introduced sludge or waste is dried;
Dry matter inlet 411 through which the dried product is dried through the main dryer 300, a carbide outlet 412 through which the injected dry matter is carbonized, and dry gas discharge hole 413 for discharging dry gas generated during carbonization. Carbon tube 410 including a, and the first inlet 421, the first inlet 421 through which the hot air flows in communication with the hot air outlet 222 of the combustor 200, the first outlet 422 is discharged, the second Carbonizer 400 including an outer cylinder 420 including a second inlet 423 for re-introducing hot air discharged through the first outlet 422 and a second outlet 424 for discharging the re-introduced hot air. ); And
Carbide storage means 600 for storing the carbide flowing out of the carbide outlet 412 of the carbonizer 400,
The first line L1 for communicating the hot air outlet 222 and the first inlet 421 of the combustor 200 and the second outlet 424 through which hot air circulated inside the carbonizer 400 is discharged. The bypass line (L4) is further provided for communicating the second line (L2) provided on the side,
A heat detection sensor 230 is further provided on the side of the dry gas inlet 211 of the combustor 200, and a flashback arrestor 1700 for preventing backfire is provided with the dry gas discharge hole 413 and the dry gas inlet 211. Sludge or waste treatment system having a bypass line, characterized in that it is further provided through a fifth line (L5) connected to the third line (L3) for communicating with each other.
The method according to claim 1 or 2,
Further comprising an auxiliary dryer (500) having a double cylindrical structure including an inner cylinder (510) and an outer cylinder (520) surrounding the inner cylinder (510),
The inner cylinder 510 is a waste inlet 511 into which sludge or waste is introduced, a waste which is heated and dried is discharged, and a waste outlet 512 communicating with a waste inlet 310 of the main dryer 300, Auxiliary dry waste heat inlet 513 and auxiliary dry waste heat outlet 514 for introducing and draining the dry waste heat flowing out from the dry waste heat outlet 340 of the main dryer 300,
The outer cylinder 520 communicates with the second outlet 424 of the carbonizer 400, and the carbonized heat inlet 521 into which the carbonized heat discharged from the second outlet 424 of the carbonizer 400 flows. And a carbonization heat outlet (522) for releasing the introduced carbonization heat; and a sludge or waste treatment system having a bypass line.
The method according to claim 1 or 2,
The upper portion of the carbonizer 400 is further provided with a dry gas collection tank 430 for collecting dry gas discharged from the dry gas discharge hole 413,
Sludge or waste treatment system having a bypass line, characterized in that the dry gas discharged from the dry gas collection tank (430) flows into the dry gas inlet (211) of the combustor (200).
The method of claim 4, wherein
A third line L3 is further provided to communicate the dry gas discharge hole 413 and the dry gas gas inlet 211 with each other.
Sludge or waste provided with a bypass line on the third line (L3) is provided with a cyclone (1300) and cold trap (1400) for purifying dry gas discharged from the dry gas collection tank 430 Processing system.
The method according to claim 1 or 2,
An inner side of the combustion tube 210 further includes a preheating space 213 for increasing the temperature of the dry gas flowing into the combustion tube 210 from the dry gas inlet 211 and maintaining a pressure above a predetermined pressure. Sludge or waste treatment system having a bypass line, characterized in that the.
delete The method of claim 2,
The outer cylinder 420 of the carbonizer 400 is discharged to the first inlet 421 and discharged to the first outlet 422 and the hot air discharged to the first outlet 422 to the second inlet 423 The bypass line is divided into a first passage tube 425 and a second passage tube 426 so that the hot air flowing into and exiting the second discharge port 424 is not mixed inside the outer tube 420. Equipped sludge or waste disposal system.
The method of claim 3, wherein
Sludge or with a bypass line, characterized in that the guide plate 523 is provided between the outer cylinder 520 and the inner cylinder 510 of the auxiliary dryer 500 so as to flow in the spiral heat introduced into the spiral. Waste disposal system.
The method according to claim 1 or 2,
Further comprising a seventh line (L7) for transferring the carbide flowing out of the carbide outlet 412 of the carbonizer 400 to the carbide storage means 600,
The seventh line L7 further includes a screw L7-2 for conveying carbide and a screw shaft L7-1 for rotating it, wherein water is injected into the seventh line L7. Sludge or waste treatment system with bypass line.

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