KR100948784B1 - Sludge drying and carbonization apparatus - Google Patents

Abstract

The sludge and food waste titles of the present invention are summarized as organic materials.

When the organic material with water content is pulverized and dried quickly, the water content is reduced, and heat treatment is carried out in an anoxic reducing atmosphere in a carbonization furnace to produce carbon-fixed carbide in organic matter. This process is called carbonization. Carbide can be a product of different physical properties depending on the temperature (hereinafter, carbonization temperature) applied in the manufacturing process. Above 800 ° C, fine porous materials with charcoal-like properties are produced. High-temperature carbides are also black and have heat-absorbing properties, which can be used as soil amendments, adsorbents, snow melts and solid fuels.

In addition, it is possible to feed dehydrated food wastes in a floating drying furnace to induce pulverization and rapid drying to preserve the nutrients of organic matter, and to produce carbonized products after carbonization.

Drying technology of the present invention by supplying the hot air supplied to the lower side while performing the crushing and floating at the same time using the grinding and floating rotary blade equipped at the bottom of the organic material with the water content in the flotation drying, floating drying at the top With the upper rotary blade installed, the organic material is further finely pulverized and dried to inhale the gas and the dried and pulverized organic material with a manned blower installed at the rear stage. After implementation, the organic matter is discharged to the bottom and the gas is discharged to the top. The cyclone is formed at the rear of the specific gravity separation tank to separate the separated organic matters again, and the dry gas, odor and other gases are guided to the manned blower and supplied to the pyrolysis furnace for pyrolysis treatment.

Carbonization technology is a kind of pyrolysis technology that indirectly heats the outside of the heat medium pipe while passing the dried organic matter inside the heat medium pipe, heats and carbonizes in the oxygen deficient state, and thermally decomposes dry gas generated in the carbonization and drying process. It is recovered as a heat source and used as a heat source of the sludge carbonization furnace, while a waste heat boiler is operated with an excess heat source to produce steam, and a steam turbine is operated and used as electricity necessary for the process, and as a surplus heat source, pretreatment of carbonization is performed. The present invention relates to sludge drying and carbonization equipment including drying facilities used for drying facilities.

Carbonization, drying, heat medium, sludge, food waste, pyrolysis, gas

Description

Sludge drying and carbonization apparatus

The present invention relates to a sludge drying and carbonization apparatus, and more specifically, the high temperature supplied to one side of the lower side while simultaneously performing the grinding and flotation by using the grinding and flotation rotary blade equipped at the bottom of the organic material with water content in the flotation While supplying hot air, and grinding the organic matter more finely with the upper rotary blade installed on the upper part by flotation drying, while drawing the gas and drying and pulverized organic matter with the manned blower installed at the rear stage, After drying by supplying high temperature hot air from the drying furnace, organic matter is discharged to the lower part from the specific gravity separation tank and the gas is discharged to the upper part. A cyclone is formed at the rear of the specific gravity separation tank, and the separated organic matter is separated again. A method of carbonizing dried organic material discharged from specific gravity separation tank and cyclone by heating organic material inside the carbonization furnace at a temperature of 850 ℃ ~ 950 ℃ at reduced state and passing organic material through heat pipe. Carbonization is a method of carbonizing while feeding and transporting organic matter dried in the furnace to the heat medium pipe by the forced press method.The organic matter passing through the heat medium pipe indirectly by heating the heat medium pipe in the oxygen deficient state It is equipped with a carbonization device to make the solid fuel worth enough, and to cool the carbides passing through the heat medium pipe to prevent the burning of carbides. Pyrolysis at the upper part of the carbonization furnace (keeping the temperature inside the combustion chamber at 850 ~ 950 ℃). It is equipped with a furnace to dry gas (tar <liquid>), odors and other gases generated from carbonization and drying furnaces. After pyrolysis, it is recovered as a heat source of carbonization furnace and used again.The waste heat boiler is installed at the end of pyrolysis furnace to produce steam as surplus heat source, and after steam production, it is used as heat source for floating drying furnace and surplus gas after heat exchange. Other sources of heat and exhaust gases relate to sludge drying and carbonization equipment that allows the clean gas to be discharged to the outside after treatment in a bag filter.

Most developed countries have discouraged marine waste emissions, and marine emissions must be curbed through the continuous use of land treatment resources. In terms of domestic treatment related to sewage treatment, the amount of sewage sludge is increasing every year.

In order to prepare a long-term plan for the proper treatment of sewage sludge, it is necessary to establish land treatment facilities and to prepare measures according to the regulations of ocean emission.

In the past, many technologies have been developed in Korea for the sewage sludge land treatment, but there are still many problems in the treatment method.

First, in the drying process, sewage sludge has been landfilled, incinerated, and recycled as it contains moisture, but it is dried by various methods of sludge due to problems of landfill and deterioration of treatment efficiency. Although it has been treated with pretreatment technology, not the final treatment of the back sludge, it has been shown to be inefficient due to technical problems because of its low recycling value and high processing cost due to fluctuations in oil prices.

Secondly, thermally decomposing sludge with indirect heating of 400 ~ 500 ℃ in an oxygen-free or low oxygen atmosphere to produce amorphous carbon.Although carbides can be used for cement factory raw materials and activated carbon production, the characteristics of carbonized products are not stable. Difficulty in securing demand, advanced skill and operation management skills are required, and the reliability of products is required. The higher the reaction temperature of carbonization or the longer the reaction time, the higher the stability.However, in the case of carbonization at low temperature or short time, among the carbonization, there are many organic components that are not sufficiently pyrolyzed. Its low, carbides emit a strong odor and its properties are similar to dry sludge.

In addition, the carbonization method of the existing carbonization facilities has many problems due to frequent breakdowns due to clinker and mechanical heat deformation in the carbonization process, and the direct heating method prevents dust from being blown by drying with sludge. It is not inefficiently stable, causing problems with the equipment and reducing the recovered water.

Third, as a sludge solidification technology, it is a facility for mixing and granulating slag with quicklime and cement as a main component, and then drying, solidifying or fermenting in a molding apparatus to reduce the weight. As the pH rises, the efficiency and treatment cost vary depending on the generation of odor, the fear of leaching heavy metals from solidified products, and the type of solidifying agent.

Fourth, the incineration ash, which is reduced by burning the sludge with the oxygen in the air by burning the sludge and economically utilizing the heat of incineration, is buried and recycled. Compared with the generation, recycling, and landfill of secondary environmental pollutants, installation and operation costs are high, and operation management is difficult due to advanced technology.

The present invention has been made to solve the problems of the prior art, by inducing crushing and fast drying of food waste to maintain nutrients for use as feed, and carbonizing sludge, the hot carbide of the sludge is black and absorbs heat It can also be used as soil-improving material, adsorption material, snow melting material, etc. In the present invention, heating the heating medium provided in the carbonization furnace at a high temperature carbonization temperature of 850 ℃ ~ 950 ℃ or more, sludge into the heat medium pipe The method of carbonizing in the state of oxygen deficiency while passing through the forced press method eliminates the failure of the conveying device, cools the carbide passing through the heat medium pipe to make the solid fuel worth enough, and uses organic heat to dry organic matter and surpluses. It relates to sludge drying and carbonization equipment for energy recovery.

Sludge drying and carbonization apparatus of the present invention,

Floating and floating organic materials with water content by using the grinding and floating rotary blades at the bottom of the float drying at the same time to supply the high temperature hot air for drying supplied to the lower one side, the upper rotation mounted on the upper by floating drying After crushing the organic matter finely with a knife blade, the drying process is carried out quickly, while the gas and dried and pulverized organic matter are attracted and inhaled by a manned blower installed at the rear stage. In the specific gravity separation tank, organic matter is discharged to the bottom and gas is discharged to the top. The dry organic matter separated from the specific gravity tank and the cyclone is carbonized by feeding it to the input hopper.

In the case of the food waste, the value of the feed is sufficient by performing grinding and drying, and it is used as feed, and used as compost after carbonization.

Since the drying is carried out in the process of transporting the organic matter to the drying apparatus and the transfer pipe, to maintain the drying temperature is carried out to all the facilities.

The dry gas and odor and other gases are guided to a manned blower and supplied to a pyrolysis furnace for pyrolysis.

The organic material dried in the drying apparatus is introduced into the carbonization furnace hopper in a reduced state, and the introduced sludge is continuously introduced into the heat medium tube inlet by rotating the feed screw.

The sludge passed through the heat medium pipe is carbonized at a high temperature of the heated heat medium to be transferred to a cooling bath to discharge carbide, and the carbide is manufactured to be molded or used according to its use.

The carbonized dry gas (tar <liquid>) generated during carbonization and cooling is pyrolyzed in the pyrolysis furnace to recover high temperature heat and reused in the carbonization furnace.The excess heat source is connected to the waste heat boiler at the rear by pyrolysis to install steam. After production, part of the surplus heat source is supplied to the drying furnace and used as a drying heat source.

Some of the heat sources generated after the waste heat boiler are supplied to the drying furnace, and the remaining surplus heat source is used as the other heat source after heat exchange in the heat exchanger provided at the rear of the waste heat boiler. Discharge.

The present invention induces rapid drying with hot air supplied from one side of the lower portion by drying the fine particles while grinding the organic matter by using the rotational force of grinding and floating the organic matter with moisture, food waste to maintain the nutrient feed To provide sufficient value, to carbonize to produce carbonized products,

The sludge among the organic matters is dried to produce carbonized products, heating the heating medium and carbonizing the organic material while passing the organic material through the heating tube, while eliminating the trouble of the equipment of the transfer device, while the heating medium is made of ceramic-based material and thermally The high temperature carbonization without the mechanical deformation, without the clinker in the carbonization process, makes the solid fuel valuable and recovers the energy by using the extra heat.

Dioxins are not contained in the carbides, and hexavalent chromium is reduced to trivalent chromium, which also serves as a countermeasure for dissolution of heavy metals. Dioxins are pyrolyzed in a reducing atmosphere above 850 ° C, so dioxins are decomposed during carbonization. The reduced ash content is high due to the sticky or defective state of carbon in the reduced ash, and the reaction temperature of carbonization is high and the reaction time is sufficient.

The calorific value of most sludge carbonized solids is 2,000 ~ 4,000kcal / kg, and the solid fuel has a good value, but the sludge after digestion has low calorific value, so it can be used as soil reforming material, adsorbent and cement material.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

1 is a block diagram showing a sludge drying and carbonization apparatus according to the present invention.

As shown in Figure 1, the present invention,

Drying unit (D) for heating and grinding wet sludge to dry;

A carbonization part C for heating and carbonizing the dried sludge;

A waste heat recovery unit (E) for reusing the heat gas discharged from the carbonization unit;

An exhaust gas processing unit (F) for processing the surplus gas;

It consists of.

Figure 2 is a view of the 'carbide input device' in the sludge drying and carbonization apparatus according to the present invention.

As shown in FIG. 1 and FIG. 2, the carbonization part C is

A carbonization furnace 12 having a carbide input hopper 10 formed thereon and a supply screw 13 formed therein and a heat medium tube 18 communicating with the supply screw 13 therein;

A heat medium tube heating burner (19) installed in the carbonization furnace (12);

A gas pyrolysis furnace 31 for recovering the heat source generated in the carbonization furnace 12 and pyrolyzing the generated gas;

A heat recovery tube 34 and a heat recovery control damper 35 for supplying the heat source pyrolyzed in the pyrolysis furnace 31 to the carbonization furnace 12;

A heat recovery pipe 38 and a heat recovery control damper 39 for supplying waste heat discharged to the rear end of the waste heat boiler 37 to the drying furnace 44;

A chiller C-2 for cooling the carbonized carbonized product;

Carbide discharge cooling transport conveyor 26 for discharging the cooled carbonated product

It is configured to include.

As shown in the detailed carbide input of Figure 2, the first step of carbonization,

In the step of supplying the carbide to the heat medium tube (18) configured in the carbonization furnace (12), by inputting the carbide into the carbide input hopper 10 and supplying the carbide to the feed screw drive device 11 to the feed screw drive device (11) The drive screw 13 is driven by the drive device P to inject the carbide introduced from the feed roller drive device 11 into the heat medium tube 18.

The transfer of the carbide introduced into the heat medium tube 18 drives the supply screw 13 to the heat medium tube 18 to force continuous feeding, and continuously supplies the carbide to the heat medium tube 18.

In order to protect the supply screw 13 by heat, the supply screw cooling IN / OUT nozzle 14 is provided at one side to supply the cooling water supplied from the cooling tower 74 to always cool the supply screw 13. .

In order to maintain the rotational balance of the supply screw 13, the supply screw rotational balance bushing 14 surrounds the supply screw 13 and maintains the rotational balance.

In order to protect the supply screw rotation balance bushing 14 from heat, the IN / OUT nozzle 17 for cooling the rotation balance bushing is provided on one side to supply the coolant supplied from the cooling tower 74 to supply the supply screw rotation balance bushing 14. Always cool).

High pressure air is blown to the heat medium pipe flushing air nozzle 16 provided at the front end of the heat medium pipe 18 to clean the carbides which did not escape into the inside of the heat medium pipe 18 at the end of the work after carbonizing the carbide. In addition, the cleaning function of the heat medium tube 18 was further provided.

Since the air compressor for supplying the high pressure air is a known technique, detailed description thereof will be omitted.

3 is a view of the 'carbonization unit' in the sludge drying and carbonization apparatus according to the present invention.

3 is a detailed view of the carbonization furnace 12 and the cooling device C-2, and the carbide introduced as the second stage of carbonization generates gas while being carbonized, and the gas tries to escape toward the outlet of the heat medium tube 18. By having a force, the carbide together with the gas exits toward the outlet of the heat medium tube 18.

In addition, the carbonized product is transferred together with the gas toward the outlet of the heat medium tube 18 by the guide blower 71 installed at the rear end.

Carbonization of the carbide passing through the heat medium tube 18 provided at the inner center of the carbonization furnace 12 in an oxygen deficient state, and the heat medium tube heating burner 19 is attached to the carbonization furnace 12 at an appropriate angle. The tube 18 is heated to carbonize the carbide passing through the heat medium tube 18 by indirect heating.

LPG, biogas and other gases are used as energy for heating the heat medium tube 18, and for initial heating of the heat medium tube 18, the carbonization furnace 12, and the pyrolysis furnace 28. When the operating temperature drops, only the auxiliary heat source is supplied.

After heating the heat medium tube 18 in the carbonization furnace 12, the heat source is sent to the pyrolysis furnace 31, and dry gas (tar (oil-like liquid)) and other gases generated during organic material drying and carbide carbonization. And after the steam is transferred to the pyrolysis furnace 31 to thermally decompose the gas in the pyrolysis zone 33, a portion of heat is recovered through the heat recovery pipe 34 to recover a certain amount of heat to the heat recovery control damper 35 and the carbonization furnace again. Supply heat to (12) and reuse.

The pyrolysis heat source of the pyrolysis furnace 31 is used as a pyrolysis heat source by heating the heat medium 18 in the carbonization furnace 12 and then re-supplying to the pyrolysis furnace 31, when one of the pyrolysis furnace 31 when the pyrolysis temperature falls. Pyrolysis is performed by operating the auxiliary burner 32 provided.

In the pyrolysis furnace 31, the amount of gas is increased during the pyrolysis process, and the waste heat boiler 37 is provided at the rear end of the pyrolysis furnace 31 to be reused in the carbonization furnace 12 to produce steam. The heat recovery pipe is a waste heat source at the rear end of the waste heat boiler 37 after being used as a power source of the driving device included in the present invention by producing electricity with a steam turbine (a known technique is omitted in the present invention). (38) is connected to the heat recovery control damper (39) and sent to the hot air supply chamber (41) to supply the sludge drying heat source to the flotation drying furnace (44).

The dry gas generated in the drying apparatus and the carbonization furnace 12 is a gas which is burned and lacks oxygen in the gas, and is provided with an oxygen manufacturing apparatus 73 to replenish the amount of oxygen in order to induce complete thermal decomposition during pyrolysis. Pyrolysis is carried out by supplying oxygen to the gas inlet blower 66 and the gas supply pipe 67 connected to the upper one side of the pyrolysis furnace 31. The oxygen production apparatus is a known technique. Omitted.)

 In the heat medium tube 18, the carbonized carbonized product in the oxygen deficient state is cooled to meet the air and maintain the value of the solid fuel before being combusted. The cooling water chamber 21 is connected to the rear end of the heat medium tube 18. The cooling water supply nozzle 20 is provided at one side of the cooling water chamber 21 to supply the cooling water supplied from the cooling tower 74 to cool the carbide.

The carbonized product in the heat medium tube 18 is discharged to the lower portion of the carbonized product specific gravity separation tank 23, the carbonized gas is attracted by the rear end induction blower 71 is transferred to the pyrolysis furnace 31 to thermally decompose the gas.

The rear end of the cooling device (C-2) is provided with a specific gravity separation tank 23 for separating the gas and the carbonized product, the specific gravity separation tank 23 is a carbonization outlet is formed in the lower portion and the carbonized gas discharge pipe ( 30) is formed, the centrifugal force guide ben 24 provided in the center of the specific gravity separation tank 23 is given a delay using the gas centrifugal force when the carbonized gas exits the upper portion to separate the carbonized product to the lower, gas Is discharged to the top.

In order to prevent the carbonized product from being introduced into the gas drawn by the induction blower 71 together with the carbonized product, a carbon gas pressure control damper 29 is formed at the front end of the carbon gas discharge pipe 30 to adjust the discharged gas pressure. This prevents carbonized products from mixing.

The carbonized product discharged into the specific gravity separation tank 23 is supplied to the carbonized product discharge cooling transfer conveyor 26 by the carbonized product discharge rotary valve 25 to produce the final carbonized product after cooling.

The carbonated product discharge cooling transfer conveyor 26 is connected to the cooling water supply nozzle 27 to supply the cooling water supplied to the cooling tower 74 to cool the carbonized product.

4 is a view of the 'thermal medium pipe' in the sludge drying and carbonization apparatus according to the present invention.

The heat medium tube 18 shown in FIG. 4 is made of a ceramic-based material to increase thermal conductivity, has no thermal and mechanical deformation, and has a feature of removing a clinker inside the tube during carbonization.

5 is a view of the 'drying unit' in the sludge drying and carbonization apparatus according to the present invention.

1 and 5 are detailed views of the drying unit D,

Drying part (D),

An organic material supply hopper 45 for drying the sludge supplied to the carbonization furnace 12 and into which the sludge is introduced;

An organic material supply device 46 for supplying the injected sludge by a predetermined amount;

Floating drying furnace 44 for grinding and drying the supplied sludge;

A secondary drying chamber 51 for drying the pulverized sludge;

A specific gravity separation tank 56 for performing specific gravity separation of the sludge and the gas passing through the secondary drying chamber 51;

Cyclone 62 for collecting the gas separated in the specific gravity separation tank

It is configured to include.

The first step of drying to simultaneously pulverize and dry the moisture-containing organic material is flotation drying to preheat the hot air supply of the flotation drying furnace 44 to the preheating step. Connected hot air supply pipe 43, a crushing and rotating device 47 and a crushing and rotating blade 48 installed on the lower part of the floating drying furnace 44, and an upper crushing and installed on the upper part of the floating drying furnace 44 Rotary blade drive device 49 and the upper grinding rotary blade 50, the hot air supply blower 42 connected to the lower side of the hot air supply pipe 43, and the hot air supply chamber 41 connected to the hot air supply blower 42 And, it is provided by the hot air auxiliary burner 40 is installed in the hot air supply chamber 41 to heat, thereby supplying hot air to the floating drying furnace 44 to preheat.

In addition, the organic matter quantitative supply device 46 having the organic matter input hopper 45 is connected to the middle one side of the floating drying furnace 44, thereby injecting organic matter into the preheated floating drying furnace 44 in two steps.

6 is a view of the 'rotating flotation and grinding device' in the sludge drying and carbonization apparatus according to the present invention.

FIG. 6 is a detailed view of the rotary flotation and grinding device, which drives the grinding and flotation rotating device 47 formed at the bottom of the flotation drying furnace 44 at a high speed in the third step of drying and crushing the organic material, thereby By rotating the grinding and floating rotary blade 48 driven by the organic material is supplied from the organic matter quantitative supply device 46 and finely pulverized while the finely pulverized organic matter is floated to the top.

The floating organic material is dried at a high temperature at the same time the organic material floating by the high temperature hot air supplied from the hot air supply pipe (43).

In addition, the hot air supplied from the hot air supply blower 42 of the high temperature hot air helps to float the organic matter by the hot air under pressure.

The organic matter and dry gas dried while the organic matter floats are transferred to a gas induction blower 66 configured at a rear end thereof.

7 is a view of the rotary blade in the sludge drying and carbonization apparatus according to the present invention.

The upper grinding rotary blade 50 configured in the upper part of the floating drying furnace 44 is driven at a high speed by the upper grinding rotary blade driving device 49, and finer after grinding in the lower grinding and floating rotary blade 48. It helps to dry quickly by crushing.

In the drying step 4, the secondary drying chamber 51 is connected to the upper one side of the floating drying furnace 44 in order to perform drying once again the organic matter pulverized and dried in the floating drying furnace 44,

In order to receive the hot air for drying in the secondary drying chamber 51, the secondary drying hot air supply pipe 54 connected to the hot air supply chamber 41 is connected to the secondary drying chamber 51, and the secondary drying hot air supply pipe One side of the 54 is provided with a secondary drying hot air control damper 53, the other side is provided with a secondary drying hot air supply blower 55, the hot air of the hot air supply chamber 41 is secondary drying chamber 51 To be supplied.

The centrifugal force guide ben (52) is configured inside the secondary drying chamber (51), and drying proceeds while whirlwind rotation when dry matter and gas pass.

A specific gravity separation tank 56 is connected to the rear end of the secondary drying chamber 51 to discharge the dried product to the bottom and the gas to the top.

At this time, the centrifugal force guide ben (57) provided at the center of the specific gravity separation tank (56) gives a dry matter by using a gas centrifugal force when the dry gas passes out, and separates the dried product into the lower portion, and the gas is separated from the specific gravity separation tank (56). The gas is collected in the gas collecting chamber 58 provided inside the tank and discharged to the gas discharge pipe 60.

A gas pressure adjusting damper 61 is formed and connected to the rear end of the gas discharge pipe 60 so that the dried product is not introduced into the gas drawn by the gas induction blower 66 together with the dried product. It was not mixed.

After separating the dry matter from the specific gravity separation tank 56, a cyclone 62 is provided at the rear end of the gas discharge pipe 60 to separate the dry matter of the fine powder and connected to separate the dry matter of the fine powder and the dry gas is a gas transfer pipe 65. To be discharged.

The dry matter separated from the specific gravity separation tank 56 and the cyclone 62 is discharged to the dry matter cooling transfer conveyor 64 by opening the discharge rotary valves 59 and 63.

When the sludge is dried, the dried product is transferred to a carbide inflow hopper 10 of the carbonization furnace 12 to perform carbonization.

When the food waste is dried, the dried product is discharged from the dry food transport conveyor 64 and used as feed. In addition, when carbonized food waste is produced, carbonized products are produced after carbonization in a carbonization furnace.

The gas discharged from the gas transfer pipe 65 is attracted to the gas induction blower 66 and supplied to the pyrolysis zone 33 of the carbonization furnace 31 to thermally decompose dry gas, steam, odor, and other gases.

When the steam contained in the dry gas is introduced into a high temperature pyrolysis zone 33, when steam (moisture) is transferred to the heat of the pyrolysis zone 33 in a short time, the water becomes overheated and depending on the conditions, the liquid boils instantaneously and becomes liquid. Explosion occurs due to the rapid phase change from the gas phase to the gas phase, so that it can be recovered as energy in the pyrolysis state and used in the carbonization furnace 12 and the drying process.

The dry gas is a kind of synthetic gas (Syngas), which is used as a heat source of a carbonization furnace and a drying furnace after pyrolysis with odor in a pyrolysis zone (33).

1 is a block diagram showing a sludge drying and carbonization apparatus according to the present invention.

Figure 2 is a view of the 'carbide input device' in the sludge drying and carbonization apparatus according to the present invention.

3 is a view of the 'carbonization unit' in the sludge drying and carbonization apparatus according to the present invention.

4 is a view of the 'thermal medium pipe' in the sludge drying and carbonization apparatus according to the present invention.

5 is a view of the 'drying unit' in the sludge drying and carbonization apparatus according to the present invention.

6 is a view of the 'rotating flotation and grinding device' in the sludge drying and carbonization apparatus according to the present invention.

7 is a view of the rotary blade in the sludge drying and carbonization apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10: carbide input hopper 11: input roller drive device

12: carbonization furnace 13: supply screw

18: heat medium pipe 19: heat medium pipe heating burner

21; Cooling water chamber 23: specific gravity separation tank of carbide

31 gas pyrolysis furnace 33 pyrolysis zone

34: heat recovery pipe 37: waste heat boiler

41: hot air supply room 44: by air drying

45: organic matter supply hopper 47: grinding and floating rotary blade

51: secondary drying chamber 58: gas collection chamber

60 gas discharge pipe 62 cyclone

65 gas transfer pipe 66 gas manned blower

67: oxygen supply pipe 70: bag filter

72: stack 73: oxygen production apparatus

74: cooling tower

Claims (19)

Drying unit (D) for heating and grinding wet sludge to dry; A carbonization part C for heating and carbonizing the dried sludge; A waste heat recovery unit (E) for recovering and reusing the heat gas discharged from the carbonization unit; In the sludge carbonization and drying apparatus comprising a; exhaust gas processing unit (F) for processing excess gas, comprising: The drying unit (D), An organic material supply hopper 45 into which wet sludge is introduced; An organic material supply device 46 for supplying the injected sludge by a predetermined amount; Floating drying furnace 44 for grinding and drying the supplied sludge; A secondary drying chamber 51 for drying the pulverized sludge; A specific gravity separation tank 56 for performing specific gravity separation of the sludge and the gas passing through the secondary drying chamber 51; Sludge carbonization and drying apparatus comprising a cyclone (62) for collecting the gas separated in the specific gravity separation tank (56). delete The method of claim 1, Hot air supply pipe 43 connected to the lower portion of the floating drying furnace 44; A grinding and rotating device 47 and a grinding and rotary blade 48 installed below the floating drying furnace 44; An upper grinding and rotary blade driving device 49 and an upper grinding rotary blade 50 installed on the floating drying furnace 44; A hot air supply blower 42 connected to a lower side of the hot air supply pipe 43; A hot air supply chamber 41 connected to the hot air supply blower 42; Sludge carbonization and drying apparatus characterized in that the hot air supply chamber (41) installed in the hot air auxiliary burner (40) for heating to supply the hot air to the floating drying furnace 44 to preheat. The method of claim 3, wherein Sludge carbonization and drying apparatus, characterized in that the secondary drying chamber 51 is further installed to dry the pulverized and dried organic material on the upper side of the floating drying furnace (44). The method of claim 3, wherein By driving the grinding and flotation rotary device 47 configured at the lower portion of the flotation drying furnace 44 at high speed, the organic matter is fed from the organic matter quantitative supply device 46 by rotating the grinding and floating rotary blade 48 driven thereon. Sludge carbonization and drying apparatus characterized in that the organic matter pulverized by the rotational force is floated to the top while being finely pulverized at the same time. According to claim 3, The upper grinding rotary blade 50 configured in the upper part of the floating drying furnace 44 is driven at a high speed by the upper grinding rotary blade driving device 49, and finer after grinding in the lower grinding and floating rotary blade 48. Sludge carbonization and drying device, characterized in that to help high-speed drying by performing a crushing. The method of claim 4, wherein The secondary drying chamber 51 is connected to the secondary drying hot air supply pipe 54 connected to the hot air supply chamber 41 to receive the drying hot air, One side of the secondary drying hot air supply pipe 54 is provided with a secondary drying hot air control damper 53, Sludge carbonization and drying apparatus, characterized in that the hot air supply in the hot air supply chamber 41 is supplied to the secondary drying chamber 51 by the secondary drying hot air supply blower (55). The method according to claim 4 or 7, Sludge carbonization and drying apparatus, characterized in that the centrifugal force guide ben (52) is installed inside the secondary drying chamber (51) to allow drying while whirlwind rotation when the product and gas pass. The method of claim 8, Sludge carbonization and drying apparatus, characterized in that the rear end of the secondary drying chamber 51 is further provided with a specific gravity separation tank 56 for separating the dry sludge and dry gas. The method of claim 9, Sludge carbonization and drying apparatus, characterized in that the centrifugal force guide ben (57) is installed on the inner side of the specific gravity separation tank (56) to separate the dry matter by giving a retarder to dry matter by using a gas centrifugal force when the dry gas flows out. The method of claim 1, The carbonization part (C), A carbonization furnace 12 in which a carbide input hopper 10 is formed at an upper portion thereof, a supply screw 13 is formed therein, and a heat medium tube 18 communicating with the supply screw 13 is formed therein; A heat medium tube heating burner (19) installed in the carbonization furnace (12); A gas pyrolysis furnace 31 for recovering the heat source generated in the carbonization furnace 12 and pyrolyzing the generated gas; A heat recovery tube 34 and a heat recovery control damper 35 for supplying the heat source pyrolyzed in the pyrolysis furnace 31 to the carbonization furnace 12; A heat recovery pipe 38 and a heat recovery control damper 39 for supplying waste heat discharged to the rear end of the waste heat boiler 37 to the drying furnace 44; A chiller C-2 for cooling the carbonized carbonized product; Carbide discharge cooling transport conveyor 26 for discharging the cooled carbonated product Sludge carbonization and drying apparatus comprising a. The method of claim 11, An input roller driving device 11 is further installed inside the carbide input hopper 10, In order to maintain the rotational balance of the supply screw 13, the supply screw rotation balance bushing 14 is installed to surround the supply screw 13, In order to protect the supply screw rotational balance bushing 14 by heat, the IN / OUT nozzle 17 for cooling the rotational balance bushing is provided on one side to supply the coolant supplied from the cooling tower 74 to supply the supply screw rotational balance bushing ( Sludge carbonization and drying apparatus characterized in that for cooling 14). The method of claim 11, The heating medium pipe flushing air nozzle (16) is further provided at the front end of the heating medium pipe (18) to clean the carbides that did not escape into the heating medium pipe (18) by spraying high pressure air. Sludge carbonization and drying equipment. The method of claim 11, The cooling device (C-2) is formed in the rear end of the heat medium tube 18, the cooling water supply nozzle 20 is provided on one side and the cooling water chamber for supplying the cooling water supplied from the cooling tower 74 to cool the carbide ( Sludge carbonization and drying apparatus, characterized in that 21). The method of claim 11, After heating the heat medium tube 18 in the carbonization furnace 12, the heat source is sent to the pyrolysis furnace 31, and dry gas (tar (oil-like liquid)) and other gases generated during organic material drying and carbide carbonization. And after the steam is transferred to the pyrolysis furnace 31 to thermally decompose the gas in the pyrolysis zone 33, a portion of heat is recovered through the heat recovery pipe 34 to recover a certain amount of heat to the heat recovery control damper 35 and the carbonization furnace again. Sludge carbonization and drying apparatus to supply heat to (12) for reuse. The method of claim 14, The rear end of the cooling device (C-2) is provided with a specific gravity separation tank 23 for separating gas and carbonized products, The specific gravity separation tank 23 has a carbonized product outlet formed at a lower portion thereof and a carbonized gas discharge pipe 30 formed at an upper portion thereof. Separation, sludge carbonization and drying apparatus, characterized in that the centrifugal force guide ben 24 is installed so that the gas can be discharged to the top. The method of claim 16, Sludge carbonization and drying apparatus, characterized in that the carbonization gas pressure control damper 29 is further provided to adjust the gas pressure discharged to the front of the carbonization gas discharge pipe 30 so that the carbonized product is not mixed. The method of claim 11, The heat medium tube 18 provided at the inner center of the carbonization furnace 12 is made of a ceramic-based material, thereby eliminating clinker in the sludge carbonization process passing through the heat medium tube 18, and carbonizing in an oxygen deficient state. Sludge carbonization and drying apparatus, characterized in that. The method of claim 11, Sludge carbonization and drying apparatus characterized in that the waste heat discharged from the waste heat boiler 37 through the heat recovery tube 38 and the heat recovery control damper to recover the waste heat and supply it to the drying furnace 44 to use as a heat source for drying. .

Images