JPH08327035A - Organic matter-containing residue incinerator - Google Patents

Abstract

PURPOSE: To obtain an organic matter-containing residue incinerator facilitating a reduction in an installing space, operation and maintenance management and having excellent thermal efficiency. CONSTITUTION: This organic matter-containing residue incinerator comprises a dehydrator 10 for separating into solid content and liquid containing mainly water content in shochu or a clear distilled liquor distilled residue, a concentrating can 20 for heating to evaporate the liquid taken out by the dehydrator 10 to take out the liquid containing the solid content remaining in the liquid as the concentrated liquid and taking out the vapor, a fluidized bed incinerating furnace 30 for incinerating the concentrated liquid from the can 20 and the solid content and the liquid from the dehydrator 10, and a catalytic burner 43 for burning the organic content in the vapor from the can. The furnace 30 has a waste heat boiler 37 having combustion waste heat as a heat source and air preheaters 35, 38. The vapor generated from the waste heat boiler is introduced to the heater 22, the high temperature air preheated by the preheaters 35, 38 is introduced to an assist burner 39. Further, the burner 43 has a vapor preheater 44 from the can 20 with the waste heat by the combustion as the heat source and an air preheater 45 for burning the vapor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for incineration of organic matter-containing residues such as alcohol-containing residues, for example, in the process of producing shochu such as rice shochu, barley shochu, buckwheat shochu, etc. The present invention relates to an incinerator for an organic substance-containing residue such as so-called shochu distillation residue, which is the residue discharged from the bottom of the distilling pot when the raw sake is obtained.

[0002]

2. Description of the Related Art Shochu distillation residue (sometimes referred to simply as shochu residue or shochu waste liquid or shochu lees or residue solution) as an organic substance-containing residue is a grain of rice or wheat or buckwheat (soba) or potatoes. It is a high water content waste liquid discharged from the bottom of a distillation pot, which is composed of solid contents (organic substances) and organic substances such as water and alcohols such as ethyl alcohol, and contains about 90% of the water. Since such a waste liquid has a high BOD (biochemical oxygen demand), it cannot be directly discharged to rivers or seawater. Therefore, conventionally, the processing of the distilled spirits distillation residue is performed by first supplying the distilled spirits distillation residue to a concentration canister and heating the distilled spirits distillation residue at the concentration can to evaporate a part of liquid components such as alcohols and water. A concentrated cake liquid containing solids such as grains is taken out, and the vapor containing the evaporated alcohols and water is cooled in a condenser to be condensed, and then the condensed liquid is treated with an activated sludge method or the like. The so-called biological treatment such as the so-called so-called drainage treatment is performed to lower the BOD value and discharge into rivers and the like, and the concentrated cake liquid is further processed through a drying process to be produced as livestock feed or the like. It was In the concentration canister, the solid content which is the organic matter of the shochu distillation residue and the organic matter such as water and alcohols are separated, and the BOD value of the water and alcohols is lowered to such an extent that waste water can be treated.

[0003]

However, the waste liquid having a high water content, which is the above-mentioned shochu distilled residue, is directly supplied to an evaporator to evaporate a part of the liquid components such as alcohols and water to contain solid components. In the method of taking out the concentrated liquid, the amount of heat required for evaporation becomes excessive. That is, the evaporator requires steam as a heating source, but the steam amount becomes too large, and the fuel amount such as heavy oil required for the steam generating source, such as a boiler, becomes too large. Further, since the high-water-content waste liquid which is the shochu distillation residue is directly charged into the condensing can, all the solid contents which are grains such as rice or wheat contained in the shochu distilling residue are contained in the heating part of the condensing can. Since it is heated in, the problem such as charring occurs in the concentrating can.

Further, in order to take out alcohol vapor or water vapor generated in the evaporator and to treat the wastewater, the vapor is cooled and condensed in a condenser, but a large amount of cooling water is required for this and a high temperature is required. Since the steam is cooled, heat loss is also caused. On the other hand, the BOD value of the condensate to be treated by wastewater is set to a predetermined low value, and the BO is further increased to such an extent that it can be discharged to a river or the like by the wastewater treatment.
Although it is possible to lower the D value, the treatment equipment for the wastewater treatment requires a large aeration tank, a reaction tank for anaerobic treatment, and auxiliary equipment such as pumps for them, so that the installation space becomes large. The installation cost is also high, and since it is a biological treatment method, temperature control and PH control are required,
It was complicated in terms of management and the operating cost was high.

Since the concentrated cake liquid is made into a feed through a drying step, a separate amount of heat for drying is also required. And, in the conventional shochu distillation residue treatment method consisting of the above-mentioned waste liquid concentration step, the condensation step of the steam discharged therefrom and the wastewater treatment step of the condensed liquid and the concentrated cake liquid drying step, in particular, the required heat amount However, due to the large fuel cost, the high operation and maintenance costs, and the like, the shochu distillation residue eventually had to be dumped into the ocean without such treatment. .

The present invention has been made in view of the above problems of the conventional apparatus for treating organic substance-containing residues such as shochu distillation residue, and the installation space can be reduced and operation and maintenance management can be performed. It is also an object of the present invention to obtain an incineration treatment apparatus for organic substance-containing residues such as a distilled spirits distillation residue which is easy and has a small amount of fuel required for the treatment and has high thermal efficiency.

[0007]

In order to achieve the above object, the organic substance-containing residue incineration apparatus of the present invention comprises:

(1) A dehydrator in which a residue containing an organic substance is charged and separated into a liquid mainly containing solids and water in the residue and a liquid mainly containing water, and the dehydrator A concentrating can that heat-evaporates a liquid mainly composed of water to take out a liquid containing a solid content remaining in the liquid as a concentrating liquid and takes out evaporated vapor, a concentrating liquid taken out from the concentrating can, and the dehydration It comprises a fluidized bed incinerator for incinerating a solid content and a liquid mainly composed of water taken out from the vessel, and a catalytic combustor for burning the organic content in the vapor taken out from the concentrating can.

(2) In the organic substance-containing residue incinerator of (1) above, the fluidized bed incinerator is equipped with a waste heat boiler and an air preheater, each of which uses waste heat from combustion as a heating source. The steam generated in the waste heat boiler is guided to the feed liquid heating section of No. 2 and the high temperature air preheated by the air preheater is guided to the auxiliary combustion burner of the fluidized bed incinerator.

(3) In the organic substance-containing residue incineration apparatus of (2) above, the catalytic combustor uses a waste heat from combustion as a heating source, and a preheater for steam taken out from the concentrating can and a combustion of the steam. It was configured with an air preheater for use.

[0011]

In the configuration of (1) above, for example, a shochu distillation residue as an organic substance-containing residue is first charged into a dehydrator, where it is separated into a liquid mainly containing solids and water and a liquid mainly containing water. Taken out. Since the liquid mainly composed of the water has a reduced solid content such as grains, B
The OD value is lowered by a predetermined value and the water content is reduced by a predetermined amount, and this liquid is supplied to the concentrating can. In the concentrating can, the feed liquid is heated in the heating unit, and a part of water and organic substances such as alcohols in the liquid are evaporated to vapor,
The vapor is taken out from the concentrating can, supplied to the catalytic combustor in the next step, and burned as it is. On the other hand, a so-called concentrated liquid in which a part of water and alcohols are evaporated and removed to increase the solid content concentration is taken out from the concentrated can. Then, the concentrated liquid taken out and the liquid mainly composed of solid content and water taken out from the dehydrator are put into a fluidized bed incinerator and incinerated and deodorized,
Detoxified.

[0012] However, since the distilled liquor distillation residue has a predetermined amount of liquid such as water content removed by the dehydrator before being supplied to the concentrating can, the amount of heat supplied to the heating part of the concentrating can is small. Fuel such as heavy oil as a steam generation source supplied to the heating unit is small. In addition, since the liquid supplied to the condensing can from the dehydrator removes most of the solid content contained in the shochu distillation residue, there is little burning of the solid in the condensing can and operation is smooth. Be seen. Moreover, in this catalytic combustion, it is not necessary to cool the alcohol vapor generated in the condensing can, and the generated vapor is burned as it is.
Since it is possible to maintain the predetermined combustion temperature as much as possible by the heat of combustion due to the rapid combustion of the organic vapor such as alcohol itself, an auxiliary combustion amount for combustion is hardly required, and the organic component such as alcohol can be efficiently heat-treated. Is burned and rendered harmless.

A gas in which combustion air is mixed with organic vapor such as alcohol vapor and steam is introduced into the catalytic combustor, and the organic vapor is formed on the surface of a catalyst such as a platinum catalyst provided in the catalytic combustor. It is burned all at once and an oxidative combustion reaction is carried out. It is completely burned and converted into carbon dioxide gas and water vapor and deodorized. On the other hand, the water vapor introduced into the catalyst combustor passes through the catalyst as it is, is introduced into the space above the catalyst of the combustor, and is deodorized in a high temperature atmosphere. The carbon dioxide gas and steam generated by the oxidative combustion and the steam that has passed through the catalyst are discharged from the upper space of the combustor to the outside and released to the atmosphere. However, the catalytic combustor can be formed compactly as compared with the waste water treatment device as in the prior art, so that the installation space is small and the operation is easy. Further, this catalytic combustion does not require cooling water for condensing steam unlike the conventional device.

With the configuration (2), steam obtained by waste heat of the exhaust gas of the fluidized bed incinerator is used as the heating source of the concentrating can, and fluidized bed incineration is used for the auxiliary burner of the fluidized bed incinerator. By supplying the combustion air that has been preheated by the waste heat of the exhaust gas from the furnace, the thermal efficiency of the incinerator as a whole for the residue containing organic matter such as the distilled spirits distillation residue is increased.

With the configuration (3), the steam and organic vapor such as alcohols discharged from the concentrator and supplied to the catalytic combustor are preheated by the waste heat of the combustor itself and the alcohols are also preheated. Since the air for combustion of the steam of the above is preheated by the waste heat of the combustor itself, this is combined with the fact that the combustion temperature is maintained by the combustion heat of the rapid combustion of the organic vapor such as alcohol itself, and the catalyst combustor is supported. The catalyst does not require fuel, the catalytic combustion is performed more efficiently, and the thermal efficiency of not only the catalytic combustor but also the entire incinerator of organic matter-containing residues such as shochu distillation residue is improved.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a flow diagram of an apparatus for incineration of shochu distillation residue as an organic matter-containing residue of the present invention and a schematic view (partially longitudinal sectional view) of each device constituting the present apparatus.

Reference numeral 1 is a tank for shochu distillation residue (hereinafter, simply referred to as a residual liquid), and 10 is a dehydrator, which is a screw decanter type in this embodiment. The residual liquid stored in the tank 1 is a solid content as an organic matter which is a grain such as rice, wheat, buckwheat (soba) or potato (solid suspension called suspension solid (also simply called cake or suspension)) and In this embodiment, the waste liquid is a high-water-content waste liquid consisting of water and an organic substance such as alcohols such as ethyl alcohol and containing about 89 to 92% of the water, and the residual liquid is passed through the supply pipe 2 through the supply pump to the dehydrator. Sent to 10.

In the dehydrator 10, a liquid mainly composed of the solid suspended matter and water in the residual liquid supplied to the dehydrator 10 [hereinafter,
Simply called a residue. This residue has a solid content of 20 in this example.
%, 80% water (containing a small amount of alcohols). ] And a liquid mainly composed of water [hereinafter, simply referred to as waste liquid]. In this embodiment, this waste liquid contains 91 to 95% of water (containing alcohols) and 9 to 5% of solid content which is leaked and discharged when the residue is taken out. ] And are separated and taken out. Reference numeral 3 is a waste liquid tank, and 4 is a residue tank, in which the waste liquid and the residue separated and taken out by the dehydrator 10 are temporarily stored, respectively.

From the waste liquid tank 3, waste liquid is sent to the concentrating can 20 through the supply pipe 5 having a supply pump interposed. The condensing can 20 has a heater 22 as a heating part of the condensing can and an evaporating can 21 for evaporating the waste liquid heated by the heating device 22. The upper part of the heater 22 and the body of the evaporating can 21 are heated with the heating liquid. The liquid supply pipe 23 is connected, and the bottom of the evaporator 21 and the heater 22 are connected by a liquid return pipe 24. 22a
Is a steam supply pipe connected to the heater 22, and 22b is a condensed water discharge pipe. The heater 22 is provided with a large number of heat exchange pipes arranged side by side in the vertical direction, the waste liquid passes through the pipes, and the outside of the pipes is heated by heating steam.

The supply end of the waste liquid supply pipe 5 is connected to the liquid return pipe 24, and the waste liquid is supplied from the waste liquid tank 3 to the concentrating can 20. The waste liquid joins with the liquid circulating from the evaporator 21 to the heater 22 in the liquid return pipe 24 and first flows into the heater 22 as a circulating liquid heating unit. A vapor extraction pipe 25 is connected to the top of the evaporation pipe 21, and the other end of this pipe is connected to a catalytic combustor 40 described later. At the upstream position of the return liquid flow from the connection point of the liquid return pipe 24 to the waste liquid supply pipe 5, a concentrated liquid take-out pipe 26 having a feed pump interposed is connected, and the other end of the pipe is connected to a fluidized bed incinerator 30. It is connected to the entrance hopper 7. On the other hand, the residue tank liquid 4 and the inlet hopper 7 of the fluidized bed incinerator 30 are connected by a residue supply pipe 6 having a supply pump.

Reference numeral 30 denotes a fluidized bed incinerator. The fluidized bed incinerator 30 has an air chamber 31 located at the lower portion thereof, and an air dispersion plate 32 having a large number of air dispersion pipes mounted on the upper portion thereof to interpose a fluidized combustion chamber 33. Are located and configured. An auxiliary burner 39 is attached to the side wall of the air chamber 31. F is a combustion fluidized bed formed by fluidizing a fluid medium such as sand by hot air blown up from the air chamber by the air dispersion plate 32. A dispersion nozzle 34 for the incineration object is attached to the side wall of the fluidized combustion chamber 33 at a position facing the upper part of the fluidized bed F, and the end of the incineration object supply passage provided in the central portion of the dispersion nozzle 34. The section and the discharge port of the feed feeder (screw pump) 8 below the inlet hopper 7 of the fluidized bed incinerator 30 are connected by an incinerator supply pipe 9 provided with an on-off valve. A supply passage for the dispersion vapor is provided around the outer periphery of the dispersion nozzle 34.

A high temperature air preheater 35 is attached to the combustion exhaust gas discharge port at the top of the fluidized combustion chamber 33 of the fluidized bed incinerator 30, and an exhaust gas duct 36 is connected to the gas downstream side of the exhaust gas duct 36. Inside the hanging portion, a waste heat boiler 37 is installed upstream of the exhaust gas flow, and a low temperature air preheater 38 is installed downstream thereof. A combustion air supply pipe 60 is connected to an air inlet of the low temperature air preheater 38,
The air inlet of the preheater 38 and the air inlet of the high temperature air preheater 35 are connected by a pipe 61 for supplying air preheated by the preheater 38, and further connected to the air outlet of the high temperature air preheater 35. A hot air supply pipe 62 is provided between the auxiliary combustion burners 39.
Have been contacted by. The air preheated by the low-temperature preheater 38 is supplied to the high-temperature air preheater 35 through the pipe 61, and further preheated by the preheater 35 to become high-temperature air, and the high-temperature air is passed through the pipe 62 to the auxiliary combustion burner 39. It is sent and used as combustion air.

Reference numeral 50 is a steam drum, 51 is a boiler water supply pipe for supplying water to the steam drum 50, and 56 is a steam extraction pipe for taking out steam generated from the steam drum 50. Between the steam drum 50 and the cooling water inlet of the cooling pipe inside the air dispersion plate 32 of the fluidized bed incinerator 30, a boiler circulation water extraction pipe 52 attached with a boiler circulation pump is attached, and further air dispersion is performed. A first circulating water return pipe 53 is attached between the cooling water outlet of the cooling pipe inside the plate 32 and the steam drum 50. The middle of the boiler circulating water extraction pipe 52 and the water supply inlet of the heat transfer pipe (boiler tube) of the waste heat boiler 37 are connected by a water supply pipe 54, and the water supply outlet of the heat transfer pipe of the waste heat boiler 37 and the steam are connected. A second circulating water return pipe 55 is attached between the drums 50.

Although not shown in the drawings, the vapor take-out pipe 56 attached to the steam drum 50 is not shown.
Is connected to the steam supply pipe 22a of the heater 22, the steam supply pipe of the auxiliary combustion burner 39 of the fluidized bed incinerator 30, and the steam supply pipe of the dispersion nozzle 34.

A bag filter 70 is installed downstream of the exhaust gas duct 36, and an exhaust gas exhaust pipe 71 is connected between the exhaust gas exhaust port and the chimney of the bag filter 70.
As a result, the ash in the exhaust gas is captured, and the clean gas is sent to the chimney 80 through the exhaust pipe 71 and is released to the atmosphere.

On the other hand, 40 is a catalytic combustion device, and the catalytic combustion device 40 is started to preheat the materials to be burned (alcohol vapor and water vapor discharged from the evaporation can 21 of the concentrating can 20) at the start of operation. A furnace 41 and a catalytic combustor 43 connected to the furnace 41 via a pipe 41b,
Inside the combustor 43, a highly active catalyst (platinum catalyst) 42 in which platinum is supported on a honeycomb-shaped carrier is provided. In the combustor 43, alcohol vapor and water vapor that are combusted substances enter inside from the lower surface of the catalyst 42, pass through the inside of the catalyst, and are discharged from the upper surface of the catalyst to the space above the catalyst.

The catalytic combustion device 40 is further provided with a preheater 44 of the combusted material provided on the upstream side of the exhaust gas of the combustion gas discharge pipe 46 of the combustor 43, and for combustion provided on the downstream side of the exhaust gas. It is configured with an air preheater 45. Reference numeral 45a is an intake pipe for combustion air, and 45b is an exhaust pipe for preheated air. The exhaust pipe 45b is connected in the middle of a vapor extraction pipe 25 connected to the vapor outlet of the evaporator 21.

Reference numeral 47 is a fan for attracting burned substances (alcohol vapor and water vapor), the suction port of which is connected to the other end of the vapor extraction pipe 25, and the exhaust port of which is a preheater 44 for the burned substance. A supply pipe 48 connected to the combustion object inlet is attached. Reference numeral 49 is a pipe for sending the preheated combustion object to the start-up furnace 41. Reference numeral 41a is a preheating burner provided in the start-up furnace 41, and a supply pipe for LPG or the like as auxiliary fuel is connected to the burner 41a.

Next, the operation of the shochu distillation residue incineration processing apparatus of the present embodiment configured as described above will be described. The residual liquid stored in the residual liquid tank 1 is composed of a solid content which is a grain such as rice, wheat, buckwheat (buckwheat) or potatoes and organic matter such as water and alcohols such as ethyl alcohol, and the water content is about 89- It is a waste liquid with a high water content containing 92%, and the residual liquid is supplied from the tank 1 to the dehydrator 10 through the supply pipe 2 by the supply pump.

In the dehydrator 10, a liquid mainly composed of the solid content and water in the residual liquid [hereinafter, simply referred to as a residue. This residue contains 20% solids and 80% water (containing a small amount of alcohols) in this example. ] And a liquid mainly composed of water [hereinafter, simply referred to as waste liquid]. In this embodiment, this waste liquid contains 91 to 95% of water (containing alcohols) and 9 to 5% of solid content which is leaked and discharged when the residue is taken out. ] And taken out, the residue is temporarily stored in the residue tank 4, and the waste liquid is temporarily stored in the waste liquid tank 3.

Waste liquid from the waste liquid tank 3 is sent by the supply pump through the supply pipe 5 into the liquid return pipe 24 of the concentrating can 20 and circulates together with the evaporation residual liquid discharged from the evaporation can 21 flowing in the liquid return pipe 24. Heater 22 as liquid heating unit
And is heated by the steam as a heating source supplied from the steam supply pipe 22a. The steam as the heating source is recovered by the steam steam drum 50 by the waste heat of the fluidized bed incinerator 30, and the steam extracted from the steam extraction pipe 56 is sent to the steam supply pipe 22a for use. In addition, the vapor as the heating source increases the amount of the residual liquid, so that the concentration can 2
When the required evaporation amount at 0 is increased, steam from another steam generating source is replenished and used as necessary.
The steam that has been used for heating the waste liquid by the heater 22 is discharged from the pipe 22b as condensed water.

When the waste liquid is heated by the heater 22, the solid content of the waste liquid is reduced by the separating action of the dehydrator 10, so that the waste liquid does not burn easily in the heat exchange tube and the operation is smooth. Done. The heat amount required as a heating source, that is, the required vapor amount, is smaller than that of the conventional method because the amount of liquid such as water in the waste liquid heated by the heater 21 is reduced by a predetermined amount due to the separating action of the dehydrator 10. Less is needed.

The heating waste liquid heated by the heater 22 and accompanied with a part of vapor is supplied to the evaporator 21 through the heating liquid feed pipe 23, where evaporation is promoted and the evaporated vapor is taken out from the vapor take-out pipe. Inflow to 25. The steam is steam of alcohols such as ethyl alcohol and steam, and the temperature is about 90 to 95 ° C. And the vapor of the alcohol has a concentration of about 15,000 pp.
It is m (1.5%). The remaining liquid (containing the solid content) separated from the vapor in the evaporator 21 is made into a so-called concentrated liquid having a high solid content concentration, and the concentration is about 20% solid content.
%, Water (including a small amount of alcohol) is about 80%,
The concentrated liquid flows into the liquid return pipe 24 and circulates therein, and then flows into the concentrated liquid discharge pipe 26 which is branched from the middle thereof and attached. The inside of the evaporator 21 is kept at a slight negative pressure (for example, -100 to -200 mmAq) by the action of the attracting fan 47 interposed in the vapor extraction pipe 25, and the evaporation action is effective here. Done.

Then, the vapor take-out pipe 25 from the evaporator 21
The steam of the alcohols and the steam (hereinafter, also referred to as combustible substances) flowing into the gas flow through the steam extraction pipe 25 by the induction fan 47 and are sent to the catalytic combustion device 40. In the vapor extraction pipe 25, the combustion air preheater 4 of the catalytic combustion device 40 is provided.
The combustion air preheated by 5 is sent through the pipe 45b, and the combustion target and the combustion air join together and flow into the pipe 48. Then, it is sent to the preheater 44 and preheated by the exhaust gas, and sent to the start-up furnace 41 of the catalytic combustion device 40 through the pipe 49. The combustion air is preheated twice by the preheater 45 and the preheater 44.

Further, in the start-up furnace 41, LPG is supplied to the preheating burner 41a as auxiliary fuel at the start of operation and burned to heat the catalyst 42 to a desired combustion reaction temperature.
During normal operation, the combustion temperature is maintained by the combustion heat of the alcohol vapor, so the preheating burner 41a of the start-up furnace 41 does not need to be operated. That is, during normal operation, the gas flowing into the start-up furnace 41 from the pipe 49 (combustion material, that is, the preheater 44
Alcohol vapor and steam that have been preheated in (1) and (combustion air) are supplied to the combustor 43 through the starter furnace 41.

The burned material passes through the start-up furnace 41 and passes through the combustor 4
3 flows into a platinum catalyst 42 provided inside, and vapors of alcohols in the burned material are burned all at once on the surface of the catalyst 42 to carry out an oxidative combustion reaction to completely burn carbon dioxide (CO 2 ₂ ) and steam (H ₂ O) to detoxify and deodorize. During operation, the temperature of the burned material in the portion passing through the start-up furnace 41 is maintained at about 350 ° C.
3 is maintained at about 400 ° C. On the other hand, the steam of the burned substance passes through the catalyst 42 as it is, is put into the upper space of the catalyst of the combustor 43, and is deodorized in a high temperature atmosphere. The carbon dioxide gas and steam generated by the oxidative combustion and the steam that has passed through the catalyst 42 are introduced from the combustor 43 to the combustion gas discharge pipe 46, and as described above, burned substances such as alcohol vapor and steam and combustion air are removed. After preheating, the temperature is lowered to 100-150 ° C. and released to the atmosphere.

In such catalytic combustion, however, the steam taken out from the evaporator 20 can be directly subjected to the oxidative combustion reaction and burned, so that the treatment can be performed very easily and the steam and the combustion air can be used. Is the combustor 43
Since the combustion temperature is maintained by being preheated by the waste heat of and the rapid combustion of alcohol itself in the steam, the auxiliary fuel in the catalytic combustion is not required, and the combustion with high thermal efficiency can be performed. In addition to the combustor 43, the catalytic combustor 40 including the combustor 43 can be made much more compact than the waste water treatment device of the prior art. Therefore, the installation space is small. Also,
The operation is easier than the wastewater treatment of the conventional method.
Further, this catalytic combustion does not require cooling water for condensing steam unlike the conventional device.

On the other hand, the concentrated liquid taken out of the concentrating can 20 through the pipe 26 by the supply pump and the residue taken out of the residue tank 4 through the pipe 6 by the supply pump (hereinafter, both may be referred to as incinerated substances). )
After being charged into the incineration hopper 7, mixed and temporarily stored, the screw pump 8 at the bottom of the hopper 7 is charged into the dispersion nozzle 34 via the incinerator supply pipe 9. In the dispersion nozzle 34, the substance to be incinerated is dispersed and ejected from the tip opening of the dispersion nozzle by the action of the steam introduced from the outer periphery and is supplied to the combustion fluidized bed F.

In the fluidized combustion chamber 33 of the fluidized bed incinerator 30, a fluidized medium such as sand is fluidized by the high temperature air supplied from the air chamber 31 to form a high temperature combustion fluidized bed F having a temperature of 750 to 800 ° C. The material to be incinerated dispersed by the dispersion nozzle 34 [a high water content material having a solid content of about 20% and a water content (including a small amount of alcohols) of about 80%] is supplied and burned and incinerated. . It should be noted that the material to be incinerated to be put into the combustion fluidized bed F is dewatered by the dehydrator 10 or the concentration can 20 to have a water content of about 80%. Is efficiently burned and incinerated and deodorized. A part of the liquid component is burned by the high temperature atmosphere in the freeboard (empty tower part) of the fluidized combustion chamber 33 until it is discharged from the dispersion nozzle 34 and charged into the combustion fluidized bed F.

The auxiliary burner 39 in the air chamber 39 is supplied with the hot air obtained by preheating by the low temperature air preheater 38 and the high temperature air preheater 35 through the pipe 62, and the heavy oil as the auxiliary fuel and the mixing. The auxiliary combustion burner 39 is heated by supplying the steam for use in the air chamber 3
High temperature air is generated at 9, and this high temperature air is generated by the air dispersion plate 3
2 to be dispersedly supplied into the fluidized combustion chamber 33 to form a combustion fluidized bed F.

The combustion exhaust gas passes through the freeboard of the fluidized combustion chamber 33, passes through the exhaust gas discharge port in the upper part, and flows into the high temperature air preheater 35 where it is used for preheating the combustion air. The exhaust gas from the preheater 35 is guided to the exhaust gas duct 36 and reaches the waste heat boiler 37, where the boiler circulating water is heated to generate steam. The exhaust gas discharged from the waste heat boiler 37 further flows into the low temperature air preheater 38, where the combustion air supplied from the pipe 60 is primarily preheated. After that, the exhaust gas is passed through the exhaust gas duct 36 and sent to the bag filter 70 to collect the ash in the exhaust gas. The clean gas from which the ash has been separated and removed is discharged from the stack (chimney) 80 to the atmosphere through the pipe 71.

On the other hand, in the air dispersion plate 32 heated to a high temperature, the boiler circulating water (cooling water) sent from the steam drum 50 through the pipe 52 is circulated and supplied to the cooling pipe arranged inside the cooling pipe. The heated boiler circulating water that has come out is returned to the steam drum 50. As a result, the air dispersion plate 3
2 is maintained at a predetermined low temperature. In addition, the waste heat boiler 3
The boiler circulating water heated by the waste heat of the exhaust gas of the incinerator 30 by 7 is returned to the steam drum 50 through the pipe 55. Steam is taken out of the steam drum 54 through the pipe 56, and as described above, the heater 2
2, or the dispersion nozzle 34, or the auxiliary combustion burner 39
Etc. are sent to be used.

As described above, in the apparatus of the present embodiment, the residual liquid containing a large amount of water is first separated into the residue mainly composed of solids and water and the waste liquid mainly composed of water by the dehydrator 10, and then
The residue is incinerated in a fluidized bed incinerator 30, the waste liquid is concentrated in a concentrating can 20 and a large amount of solid content is taken out as a concentrated liquid, while the remaining liquid content is taken out as steam (alcohol vapor and steam), Since the concentrated liquid was incinerated in the fluidized bed incinerator 30 and the vapor was burned in the catalytic combustor 40 for treatment, it had a high water content and had a high BOD and could not be discarded. Finally, all can be treated by incineration or combustion, and it does not require a wastewater treatment device that requires a large installation space and requires a large installation space as in the past, the installation space can be reduced, and operation and maintenance management is easy. Can be any device.

If a wastewater treatment equipment such as a biological treatment equipment is used instead of the catalytic combustion equipment 40 in the apparatus of this embodiment, the wastewater treatment equipment is, for example, 17 m × 12 m≈20.
Although an installation space of 0 m ² is required, the catalytic combustion device 40 of the present embodiment can be configured with an installation space of, for example, 6 m × 6 m = 36 m ² , and the installation area can be reduced to about 1/6.

In the apparatus of this embodiment, steam obtained by exhaust heat of exhaust gas from the fluidized bed incinerator 30 is used as a heat source for the concentrating can 20, and the auxiliary combustion burner 39 of the fluidized bed incinerator 30 is used. Fluidized bed incinerator 30
By supplying the combustion air preheated by the exhaust heat of the exhaust gas, the thermal efficiency of the entire shochu distillation residue incinerator is improved.

Further, in this embodiment, in the catalytic combustor 43, the steam and alcohol vapor discharged from the concentrating can 20 and supplied to the catalytic combustor 43 are preheated by the waste heat of the combustor 43 itself. At the same time, the combustion air of the alcohol vapor is preheated by the waste heat of the combustor 43 itself, and the combustion heat of the alcohol itself is used, so that auxiliary fuel (LPG, etc.) for the start-up furnace 41 is used. Is not necessary, and the thermal efficiency of not only the catalytic combustor 43 but also the shochu distillation residue incinerator as a whole is enhanced.

In the above embodiment of FIG. 1, the concentrated can 2
Shown is a case where steam recovered by exhaust heat is used as the heating source of No. 1, combustion air preheated by the air preheater 38 is used as the auxiliary combustion burner 39, and preheaters 44 and 45 are further attached to the catalyst combustor 43. However, in the present invention, this concentrated can 21
Steam generated by a separate boiler or the like may be used as a heating source for the air preheater 38.
It is not always necessary to use the air preheated in (1), and it is not always necessary to provide the preheaters 44, 45 of the catalytic combustor 43.

In the above embodiment, the catalytic combustion device 40 is used.
The starting furnace 41 and the combustor 43 are individually installed and connected by a pipe 41b.
The combustor 43 and the combustor 43 can be formed as an integrated furnace,
This makes it possible to make the catalytic combustion device more compact.

Further, in the above examples, the case where the organic matter-containing residue is a shochu distillation residue of an alcohol-containing residue having a high water content is shown. However, the present invention is a distillation residue of distilled liquor such as whiskey and brandy, or another alcohol. ,benzene,
It can also be applied to a residue containing an organic substance such as ethylene.

[0050]

As is apparent from the above description, the present invention has the following excellent effects.

In the first aspect of the present invention, for example, the shochu distilled residue as the organic matter-containing residue is removed by the dehydrator of a predetermined amount of liquid such as water before being supplied to the condensing can. The amount of heat supplied to the heating unit can be reduced, and the amount of steam supplied to the heating unit or the fuel such as heavy oil as the steam generation source can be reduced. In addition, since the liquid supplied to the condensing can from the dehydrator removes most of the solid content contained in the shochu distillation residue, it is possible to reduce the sticking of the solid content in the condensing can. Can be done smoothly.

Further, in this catalytic combustion, it is possible to burn the alcohol vapor generated in the condensing can as it is without generating the vapor generated at a predetermined high temperature.
Combustion heat generated by the rapid combustion of organic vapor such as alcohol itself can keep the combustion temperature at a prescribed level as much as possible, so that a supplementary amount of combustion is almost unnecessary and organic components such as alcohol are burned with good thermal efficiency. It can be treated to make it harmless.

Further, since the catalytic combustor can be formed more compactly than the conventionally used wastewater treatment equipment, the installation space can be reduced and the operation can be facilitated. . Further, this catalytic combustion does not require cooling water for condensing steam unlike the conventional device. In addition, since the organic substance-containing residue such as shochu distillation residue does not require a wastewater treatment device such as a biological treatment device and is entirely burned or incinerated, the entire device can be made compact.

In the structure of claim 2, in addition to the above effects,
The steam obtained from the waste heat of the exhaust gas of the fluidized bed incinerator is used as the heating source of the concentrator, and the combustion air preheated by the waste heat of the exhaust gas of the fluidized bed incinerator is used for the auxiliary combustion burner of the fluidized bed incinerator. Therefore, the thermal efficiency of the entire incinerator of organic substance-containing residues such as shochu distillation residue can be increased.

In addition to the above effects, the steam of the organic matter such as water vapor and alcohols discharged from the concentrating can and supplied to the catalytic combustor is preheated by the waste heat of the combustor itself. At the same time, the air for combustion of the organic vapor such as the alcohol is preheated by the waste heat of the combustor itself, so that the combustion temperature is maintained by the combustion heat due to the rapid combustion of the organic vapor such as the alcohol itself. In addition to being able to do so, it is possible to eliminate the need for auxiliary fuel for the catalytic combustor, and it is possible to perform catalytic combustion more efficiently, and not only the catalytic combustor but also the thermal efficiency of the entire incinerator of organic matter-containing residues such as shochu distillation residue. It can be further enhanced.

[Brief description of drawings]

FIG. 1 is a flow diagram of a shochu distillation residue incineration processing apparatus according to an embodiment of the present invention and a schematic view (partially vertical cross-sectional view) of each device constituting the present apparatus.

[Explanation of symbols]

 10 Dehydrator 20 Condenser Can 21 Evaporator Can 22 Heater 23 Heating Liquid Supply Pipe 24 Liquid Return Pipe 30 Fluid Bed Incinerator 31 Air Chamber 33 Fluid Combustion Chamber F Combustion Fluid Bed 34 Incinerator Dispersion Nozzle 35 High Temperature Air Preheater 37 Discharge Heat boiler 38 Low temperature air preheater 39 Auxiliary burner (fluidized bed incinerator) 40 Catalytic combustor 41 Starter furnace 42 Catalyst 43 Catalytic combustor 44 Combustion object preheater 45 Combustion air preheater 50 Steam drum 70 Bag filter 80 Chimney

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location F23G 5/02 ZAB F23G 5/02 ZABB ZABZ 5/46 ZAB 5/46 ZABA 7/06 ZAB 7/06 ZAB 105 105

Claims (3)

[Claims] 1. A dehydrator in which an organic substance-containing residue is charged and separated into a liquid mainly composed of solid content and water in the residue and a liquid mainly composed of water, and water extracted by the dehydrator. And a dehydrator, wherein a liquid containing mainly solids is heated and evaporated to take out a liquid containing a solid content remaining in the liquid as a concentrated liquid, and vaporized vapor is taken out, a concentrated liquid taken out from the concentrated can, and the dehydrator. It is characterized by comprising a fluidized bed incinerator for incinerating a solid content and a liquid mainly composed of water taken out from the reactor, and a catalytic combustor for burning the organic content in the steam taken out from the concentrator. Incinerator for residue containing organic matter. 2. The fluidized bed incinerator is provided with a waste heat boiler and an air preheater, each of which uses waste heat from combustion as a heating source, and is generated by the waste heat boiler in a feed liquid heating section of the concentrator. 2. The organic substance-containing residue incineration treatment apparatus according to claim 1, wherein the apparatus is configured to introduce the steam and the high temperature air preheated by the air preheater to the auxiliary combustion burner of the fluidized bed incinerator. 3. The catalytic combustor is provided with a preheater for steam taken out from the concentrating can and a preheater for air for burning the steam, each of which uses waste heat from combustion as a heating source. The organic substance-containing residue incineration treatment device according to claim 2.