EP3230654A1 - Waste treatment installation - Google Patents

Waste treatment installation

Info

Publication number
EP3230654A1
EP3230654A1 EP15826142.0A EP15826142A EP3230654A1 EP 3230654 A1 EP3230654 A1 EP 3230654A1 EP 15826142 A EP15826142 A EP 15826142A EP 3230654 A1 EP3230654 A1 EP 3230654A1
Authority
EP
European Patent Office
Prior art keywords
flue gas
pressurized air
water
gas pipeline
injection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15826142.0A
Other languages
German (de)
French (fr)
Other versions
EP3230654B1 (en
Inventor
Jari Jokela
Jussi YLIMÄKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evac Oy
Original Assignee
Evac Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evac Oy filed Critical Evac Oy
Publication of EP3230654A1 publication Critical patent/EP3230654A1/en
Application granted granted Critical
Publication of EP3230654B1 publication Critical patent/EP3230654B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B01F23/21321—High pressure atomization, i.e. the liquid is atomized and sprayed by a jet at high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/40—Portable or mobile incinerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/80—Quenching

Definitions

  • the present invention relates to a marine vessel waste treatment installation, which installation includes at least one waste receiving unit, at least one waste feeding unit, at least one incinerator unit provided with an outlet, and at least one flue gas pipeline, according to the pre-characterizing portion of claim 1 .
  • the present invention also relates to a method for flue gas cooling in a marine vessel waste treatment installation according to the pre-characterizing portion of claim 9.
  • Typical waste treatment installations also for treating wet waste such as food waste and so- called household waste, include a waste feeding hopper, from which waste is fed onto a transport screw which forwards the waste into an incinerator fur- nace. Burning of the waste takes place in the incinerator furnace e.g. at a temperature of 850 °C to 1200 °C.
  • An example of such an installation is known from EP 1 384 948 B1 .
  • flue gas resulting from the burning of the waste has a very high temperature which generates dioxin-like chemi- cals.
  • CN 102230627 discusses a land based refuse combustion furnace with a separate gas quenching cooling tower.
  • the cooling tower is provided with cooling water atomizers in order to lower the temperature of the flue gas.
  • CN 103644570 discloses another known land based solution where high pressure water mist is used for quenching flue gas in connection with the combustion furnace. These are technically complex and space requiring constructions.
  • EP 1 065 444 B1 discloses other exhaust gas cooling arrangements where high pressure water and high pressure air is in- troduced into a separate cooling chamber through a separate mixing device or high pressure hot water is introduced to an exhaust gas duct. These are technically complex constructions making them very expensive and apt to function- al failure.
  • the known solutions are space demanding making them unsuitable for marine vessels.
  • An object of the present invention is to avoid the drawbacks of prior art and to achieve an efficient marine vessel waste treatment installation with a simple flue gas cooling arrangement fulfilling the requirements of the relevant IMO Resolutions.
  • This object is attained by a marine vessel waste treatment installation according to claim 1 and a method for flue gas cooling in a marine vessel waste treatment installation according to claim 9.
  • the basic idea of the present invention is to effectively cool the flue gas within a short distance after the flue gas enters the flue gas pipeline from the outlet of the incinerator unit. This is achieved by an inline cooling arrangement that is installed in the flue gas pipeline.
  • the cooling arrangement includes a water injection device with a water discharge nozzle for feeding a water stream directly into the flue gas pipeline at a given location of the flue gas pipeline.
  • the cooling arrangement further includes a pressurized air injection device for feeding pressurized air into the water stream.
  • the advantage of the present invention is that no auxiliary cooling reactor is required. In addition, it is only necessary to provide the flue gas pipeline with a technically simple cooling arrangement and a temperature measuring arrangement. This is a technically advantageous and inexpensive measure, which requires no extra space onboard the marine vessel.
  • the pressurized air fed into the water stream disperses the water into mist that has a maximal surface to cool the flue gas within a given distance of about 2.5 m in the flue gas pipeline measured from the outlet of the incinerator unit.
  • the flue gas is cooled to a temperature under or about 250 °C.
  • pressurized air is fed into the water stream as it is discharged from the water discharge nozzle.
  • pres- surized air is fed into the water stream before it is discharged from the water discharge nozzle.
  • pressurized air is fed into the water stream after it is discharged from the water discharge nozzle.
  • the flue gas pipeline is advantageously provided with a temperature measuring unit located in the flue gas pipeline at a given distance from the outlet of the incinerator unit. This enables the control of the temperature at said given distance.
  • the given distance is advantageously about 2.5 m, whereby the prevailing norms can be accommodated.
  • the water injection device of the inline cooling arrangement is advantageously provided with a flow control means for adjusting a flow volume of the water stream based on a temperature measured by the temperature measuring unit. This enables adjustment of the cooling based on flue gas parameters.
  • the pressurized air feed connection of the inline cooling arrangement is provided with a pressure control means for adjusting a pressure of the pressurized air based on a temperature measured by the temperature measuring unit. This enables adjustment of the cooling based on flue gas parameters.
  • both the flow control means and the pressure control means can be used in combination for an optimized control of cooling the flue gas in view of the desired temperature of the flue gas at the given distance from the outlet of the incinerator unit.
  • Figs. 1 and 2 show a first embodiment of the present invention
  • Figs. 3 and 4 show a second embodiment of the present invention
  • Figs. 5 and 6 show a third embodiment of the present invention.
  • a marine vessel V waste treatment installation is indicated by reference numeral 1 .
  • the waste treatment installation 1 is installed on board a marine vessel V as indicated in Figures 1 , 3 and 5.
  • the waste treated onboard the marine vessel V waste treatment installation 1 is normally composed of a mixture of dry waste and wet waste.
  • dry waste according to IMO standards would be composed of about 40% of cardboard, 30 % of other packaging and paper, 20% of fibers and 10% of plastics.
  • wet waste would be composed of food waste and sludge with a maximum moisture content of about 80%. The purpose is to maintain average moisture content of the waste mixture at a level of about 50% or below in order to ensure that the waste mixture burns efficiently in an incinerator unit.
  • FIGS 1 and 2 illustrate a first embodiment of the present invention
  • figures 3 and 4 illustrate a second embodiment of the present invention
  • figures 5 and 6 illustrate a third embodiment of the present invention.
  • the main components of the waste treatment installation 1 include a waste receiving unit 2, a waste feeding unit 3, and an incinerator unit 4. Flue gas resulting from the burning of the waste in the incinerator unit 4 is discharged into a flue gas pipeline 8 from an outlet 7 of the incinerator unit 4. The flue gas pipeline 8 is directly connected to the outlet 7 of the incinerator unit 4.
  • the incinerator unit 4 may include a secondary burning chamber 6 with a flue gas channel 5 arranged before the actual outlet 7 of the incinerator unit 4.
  • the waste mixture is burned in the incinerator unit 4 where after the flue gases resulting from the burning of the waste or waste mixture are discharged through the outlet 7 into the flue gas pipeline 8.
  • the incinerator unit 4 includes a secondary burning chamber 6, an additional burning phase can take place in the secondary burning chamber 6 to ensure high fly-ash separation and a more complete burning of the flue gases. Such an arrangement would provide for a long gas retention time resulting in very clean burning.
  • the first section of the incinerator unit 4 and the secondary burning chamber 6 are advantageously connected by the flue gas channel 5.
  • the flue gas pipeline 8 is advantageously provided with a blower 9 in order to enhance the efficiency of discharge of the flue gas.
  • the marine vessel V waste treatment installation 1 includes an inline cooling arrangement 10 connected to the flue gas pipeline 8.
  • the inline cooling arrangement 10 includes a water injection device 1 1 with a water discharge nozzle 12 for feeding a water stream directly into the flue gas pipeline 8 at a given location A of the flue gas pipeline 8.
  • the water injection device 1 1 is directly connected to and installed in a casing 81 of the flue gas pipeline 8 so that the water discharge nozzle 12 is located inside the casing 81 , whereby the water can be fed directly into the flue gas discharged into and flowing in the flue gas pipeline 8.
  • the water injection device 1 1 receives line pressure water from a source of water 13 onboard the marine vessel V, the line pressure usually being approximately 4 bar, normally available on a marine vessel. Between the water injection device 1 1 and the source of water 13 there is a flow control means 14 for adjusting and controlling the volume of water flow.
  • the cooling arrangement 10 is provided with a pressurized air injection device 16 for feeding pressurized air into the water stream as the water is discharged from the water discharge nozzle 12 ( Figures 1 and 2), into the water as it flows through the water injection device ( Figures 3 and 4), or into the water after it is discharged from the water discharge nozzle 12 ( Figures 5 and 6).
  • Pressurized air is provided to the pressurized air injection device 16 from a source of pressurized air 17 onboard the marine vessel V. Between the source of pressurized air 17 and the pressurized air injection device 16 there is a pressure control unit 18.
  • the pressurized air used in this cooling arrangement is the pressurized air normally available in machinery rooms on a marine vessel.
  • the flue gas pipeline 8 is provided with a temperature measuring unit 20 at a given distance D from the outlet 7 of the incinerator unit 4. The given distance is under or about 2.5 m as discussed above.
  • the volume of water flow is controlled and adjusted based on the temperature measured by the temperature measuring unit 20 as indicated by broken lines in Figures 1-6.
  • the pressure of the pressurized air is controlled and adjusted based on the temperature measured by the temperature measuring unit 20 as indicated by broken lines in Figures 1-6.
  • the desired degree of cooling can be achieved, i.e. a flue gas tem- perature of under or about 250 °C in the flue gas pipeline 8 at the given distance of about 2.5 m from the outlet 7 of the incinerator unit 4.
  • the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding double hollow jacket.
  • the pressurized air injection device 16 is di- rectly connected to the interior of the hollow jacket of the water injection device 1 1 from the side of the water injection device 1 1 so that pressurized air is fed into and along the hollow jacket and into the water discharge nozzle 12, whereby pressurized air is introduced into the water discharge nozzle 12 so that the pressurized air encounters the water stream as it is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8.
  • the pressurized air could also be fed to the water discharge nozzle 12 e.g. through a separate tubing.
  • the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding jacket.
  • the pressurized air injection device 16 leads directly into the water channel through the jacket from the side of the water injection device 1 1 , whereby the pressurized air is introduced into the water stream already as it flows along the water channel and before the water is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8.
  • the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding jacket.
  • the pressurized air injection device 16 is directly connected to and installed in the casing 81 of the flue gas pipeline 8, separately from the water injection device 1 1 , so that the pressurized air injec- tion device 16 is partly located inside the casing 8.
  • the pressurized air injection device 16 is installed closely to the discharge nozzle 12 of the water injection device 1 1 . In this way, the pressurized air is fed directly into water after the water is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8.
  • the pressurized air fed into the water stream disperses the water into mist that has a maximal surface to cool the flue gas within the given distance of about 2.5 m in the flue gas pipeline measured from the outlet 7 of the incinerator unit 4.
  • the flue gas is cooled to a temperature about or under 250 °C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chimneys And Flues (AREA)
  • Incineration Of Waste (AREA)
  • Air Supply (AREA)

Abstract

A marine vessel (V) waste treatment installation (10), which includes at least one waste receiving unit (2), at least one waste feeding unit (3), at least one incinerator unit (4) provided with an outlet (7), and at least one flue gas pipeline (8) connected to the outlet (7). In order to provide for a desired cooling of the flue gas, the flue gas pipeline (8) is provided with an inline cooling arrangement (10) in order to cool the discharged flue gas to a given temperature. The cooling arrangement (10) includes a water injection device (11) with a water discharge nozzle (12) for feeding a water stream directly into the flue gas pipeline (8). The cooling arrangement (10) is also provided with a pressurized air injection device (16) for feeding pressurized air into the water stream.

Description

Waste treatment installation Technical field
The present invention relates to a marine vessel waste treatment installation, which installation includes at least one waste receiving unit, at least one waste feeding unit, at least one incinerator unit provided with an outlet, and at least one flue gas pipeline, according to the pre-characterizing portion of claim 1 . The present invention also relates to a method for flue gas cooling in a marine vessel waste treatment installation according to the pre-characterizing portion of claim 9. Background art
Various waste treatment installations are known from prior art. Typical waste treatment installations, also for treating wet waste such as food waste and so- called household waste, include a waste feeding hopper, from which waste is fed onto a transport screw which forwards the waste into an incinerator fur- nace. Burning of the waste takes place in the incinerator furnace e.g. at a temperature of 850 °C to 1200 °C. An example of such an installation is known from EP 1 384 948 B1 .
In such known waste treatment installations flue gas resulting from the burning of the waste has a very high temperature which generates dioxin-like chemi- cals.
In order to reduce the amount of generated dioxin-like chemicals a number of different solutions have been presented. CN 102230627 discusses a land based refuse combustion furnace with a separate gas quenching cooling tower. The cooling tower is provided with cooling water atomizers in order to lower the temperature of the flue gas. CN 103644570 discloses another known land based solution where high pressure water mist is used for quenching flue gas in connection with the combustion furnace. These are technically complex and space requiring constructions. EP 1 065 444 B1 discloses other exhaust gas cooling arrangements where high pressure water and high pressure air is in- troduced into a separate cooling chamber through a separate mixing device or high pressure hot water is introduced to an exhaust gas duct. These are technically complex constructions making them very expensive and apt to function- al failure. Furthermore, the known solutions are space demanding making them unsuitable for marine vessels.
Summary of invention
An object of the present invention is to avoid the drawbacks of prior art and to achieve an efficient marine vessel waste treatment installation with a simple flue gas cooling arrangement fulfilling the requirements of the relevant IMO Resolutions. This object is attained by a marine vessel waste treatment installation according to claim 1 and a method for flue gas cooling in a marine vessel waste treatment installation according to claim 9. The basic idea of the present invention is to effectively cool the flue gas within a short distance after the flue gas enters the flue gas pipeline from the outlet of the incinerator unit. This is achieved by an inline cooling arrangement that is installed in the flue gas pipeline. The cooling arrangement includes a water injection device with a water discharge nozzle for feeding a water stream directly into the flue gas pipeline at a given location of the flue gas pipeline. The cooling arrangement further includes a pressurized air injection device for feeding pressurized air into the water stream.
The advantage of the present invention is that no auxiliary cooling reactor is required. In addition, it is only necessary to provide the flue gas pipeline with a technically simple cooling arrangement and a temperature measuring arrangement. This is a technically advantageous and inexpensive measure, which requires no extra space onboard the marine vessel.
The pressurized air fed into the water stream disperses the water into mist that has a maximal surface to cool the flue gas within a given distance of about 2.5 m in the flue gas pipeline measured from the outlet of the incinerator unit. The flue gas is cooled to a temperature under or about 250 °C.
This particular requirement is based on the IMO Resolution MEPC 244(66), the Standard Specification for Shipboard Incinerators.
There are various advantageous arrangements for feeding the pressurized air into the water stream, which is fed directly into the flue gas pipeline. In a first arrangement, pressurized air is fed into the water stream as it is discharged from the water discharge nozzle. In another advantageous arrangement pres- surized air is fed into the water stream before it is discharged from the water discharge nozzle. In an alternative advantageous arrangement, pressurized air is fed into the water stream after it is discharged from the water discharge nozzle. The flue gas pipeline is advantageously provided with a temperature measuring unit located in the flue gas pipeline at a given distance from the outlet of the incinerator unit. This enables the control of the temperature at said given distance.
The given distance is advantageously about 2.5 m, whereby the prevailing norms can be accommodated.
The water injection device of the inline cooling arrangement is advantageously provided with a flow control means for adjusting a flow volume of the water stream based on a temperature measured by the temperature measuring unit. This enables adjustment of the cooling based on flue gas parameters. The pressurized air feed connection of the inline cooling arrangement is provided with a pressure control means for adjusting a pressure of the pressurized air based on a temperature measured by the temperature measuring unit. This enables adjustment of the cooling based on flue gas parameters.
Advantageously, both the flow control means and the pressure control means can be used in combination for an optimized control of cooling the flue gas in view of the desired temperature of the flue gas at the given distance from the outlet of the incinerator unit.
Further advantages features of the marine waste treatment installation are given in claims 2-8 and further advantageous features of the method for flue gas cooling in a marine waste treatment installation are given in claims 9-16.
Brief description of drawings
In the following the invention will be described, by way of example only, with reference to the accompanying schematic drawings, in which
Figs. 1 and 2 show a first embodiment of the present invention, Figs. 3 and 4 show a second embodiment of the present invention, and Figs. 5 and 6 show a third embodiment of the present invention. Detailed description
In figures 1 to 6 a marine vessel V waste treatment installation is indicated by reference numeral 1 . The waste treatment installation 1 is installed on board a marine vessel V as indicated in Figures 1 , 3 and 5.
The waste treated onboard the marine vessel V waste treatment installation 1 is normally composed of a mixture of dry waste and wet waste. Typically dry waste according to IMO standards would be composed of about 40% of cardboard, 30 % of other packaging and paper, 20% of fibers and 10% of plastics. Typically wet waste would be composed of food waste and sludge with a maximum moisture content of about 80%. The purpose is to maintain average moisture content of the waste mixture at a level of about 50% or below in order to ensure that the waste mixture burns efficiently in an incinerator unit.
Figures 1 and 2 illustrate a first embodiment of the present invention, figures 3 and 4 illustrate a second embodiment of the present invention, and figures 5 and 6 illustrate a third embodiment of the present invention. Generally the three embodiments comprise similar arrangements, whereby the main difference is in a cooling arrangement provided for the waste treatment installation, which is described separately in more detail below. The main components of the waste treatment installation 1 include a waste receiving unit 2, a waste feeding unit 3, and an incinerator unit 4. Flue gas resulting from the burning of the waste in the incinerator unit 4 is discharged into a flue gas pipeline 8 from an outlet 7 of the incinerator unit 4. The flue gas pipeline 8 is directly connected to the outlet 7 of the incinerator unit 4. The incinerator unit 4 may include a secondary burning chamber 6 with a flue gas channel 5 arranged before the actual outlet 7 of the incinerator unit 4. The waste mixture is burned in the incinerator unit 4 where after the flue gases resulting from the burning of the waste or waste mixture are discharged through the outlet 7 into the flue gas pipeline 8. In case the incinerator unit 4 includes a secondary burning chamber 6, an additional burning phase can take place in the secondary burning chamber 6 to ensure high fly-ash separation and a more complete burning of the flue gases. Such an arrangement would provide for a long gas retention time resulting in very clean burning. The first section of the incinerator unit 4 and the secondary burning chamber 6 are advantageously connected by the flue gas channel 5. The flue gas pipeline 8 is advantageously provided with a blower 9 in order to enhance the efficiency of discharge of the flue gas. In order to effectively cool the flue gas in the flue gas pipeline 8, the marine vessel V waste treatment installation 1 includes an inline cooling arrangement 10 connected to the flue gas pipeline 8. The inline cooling arrangement 10 includes a water injection device 1 1 with a water discharge nozzle 12 for feeding a water stream directly into the flue gas pipeline 8 at a given location A of the flue gas pipeline 8. The water injection device 1 1 is directly connected to and installed in a casing 81 of the flue gas pipeline 8 so that the water discharge nozzle 12 is located inside the casing 81 , whereby the water can be fed directly into the flue gas discharged into and flowing in the flue gas pipeline 8.
The water injection device 1 1 receives line pressure water from a source of water 13 onboard the marine vessel V, the line pressure usually being approximately 4 bar, normally available on a marine vessel. Between the water injection device 1 1 and the source of water 13 there is a flow control means 14 for adjusting and controlling the volume of water flow.
Further, the cooling arrangement 10 is provided with a pressurized air injection device 16 for feeding pressurized air into the water stream as the water is discharged from the water discharge nozzle 12 (Figures 1 and 2), into the water as it flows through the water injection device (Figures 3 and 4), or into the water after it is discharged from the water discharge nozzle 12 (Figures 5 and 6).
Pressurized air is provided to the pressurized air injection device 16 from a source of pressurized air 17 onboard the marine vessel V. Between the source of pressurized air 17 and the pressurized air injection device 16 there is a pressure control unit 18. The pressurized air used in this cooling arrangement is the pressurized air normally available in machinery rooms on a marine vessel. The flue gas pipeline 8 is provided with a temperature measuring unit 20 at a given distance D from the outlet 7 of the incinerator unit 4. The given distance is under or about 2.5 m as discussed above. The volume of water flow is controlled and adjusted based on the temperature measured by the temperature measuring unit 20 as indicated by broken lines in Figures 1-6. The pressure of the pressurized air is controlled and adjusted based on the temperature measured by the temperature measuring unit 20 as indicated by broken lines in Figures 1-6. By optimizing the volume of water flow and the pressure of the pressurized air the desired degree of cooling can be achieved, i.e. a flue gas tem- perature of under or about 250 °C in the flue gas pipeline 8 at the given distance of about 2.5 m from the outlet 7 of the incinerator unit 4.
In the embodiment of Figures 1 and 2, the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding double hollow jacket. The pressurized air injection device 16 is di- rectly connected to the interior of the hollow jacket of the water injection device 1 1 from the side of the water injection device 1 1 so that pressurized air is fed into and along the hollow jacket and into the water discharge nozzle 12, whereby pressurized air is introduced into the water discharge nozzle 12 so that the pressurized air encounters the water stream as it is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8. The pressurized air could also be fed to the water discharge nozzle 12 e.g. through a separate tubing.
In the embodiment of Figures 3 and 4, the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding jacket. The pressurized air injection device 16 leads directly into the water channel through the jacket from the side of the water injection device 1 1 , whereby the pressurized air is introduced into the water stream already as it flows along the water channel and before the water is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8. In the embodiment of Figures 5 and 6, the water injection device 1 1 is provided with a channel for the water stream coming from the source of water 13 and a surrounding jacket. In this embodiment, the pressurized air injection device 16 is directly connected to and installed in the casing 81 of the flue gas pipeline 8, separately from the water injection device 1 1 , so that the pressurized air injec- tion device 16 is partly located inside the casing 8. The pressurized air injection device 16 is installed closely to the discharge nozzle 12 of the water injection device 1 1 . In this way, the pressurized air is fed directly into water after the water is discharged from the water discharge nozzle 12 into the flue gas flowing in the flue gas pipeline 8. In all three embodiments, the pressurized air fed into the water stream disperses the water into mist that has a maximal surface to cool the flue gas within the given distance of about 2.5 m in the flue gas pipeline measured from the outlet 7 of the incinerator unit 4. The flue gas is cooled to a temperature about or under 250 °C.
The drawings and the description related thereto are only intended for clarification of the basic idea of the invention. The invention may vary in detail within the scope of the ensuing claims.

Claims

Claims
1 . A marine vessel (V) waste treatment installation (1 ), which includes at least one waste receiving unit (2), at least one waste feeding unit (3), at least one incinerator unit (4) provided with an outlet (7), and at least one flue gas pipeline (8) connected to the outlet (7), characterized in that the at least one flue gas pipeline (8) is provided with an inline cooling arrangement (10) in order to cool the discharged flue gas to a given temperature, that the inline cooling arrangement (10) includes a water injection device (1 1 ) with a water discharge nozzle (12) for feeding a water stream directly into the flue gas pipeline (8) and a pressurized air injection device (16) for feeding pressurized air into the water stream.
2. A marine vessel waste treatment installation according to claim 1 , characterized in that the pressurized air injection device (16) is connected to the water injection device (1 1 ) so that it is arranged to feed pressurized air into the water stream as it is discharged from the water discharge nozzle (12).
3. A marine vessel waste treatment installation according to claim 1 , characterized in that the pressurized air injection device (16) is connected to the water injection device (1 1 ) so that it is arranged to feed pressurized air into the water stream before it is discharged from the water discharge nozzle (12).
4. A marine vessel waste treatment installation according to claim 1 , characterized in that the pressurized air injection device (16) is connected to the flue gas pipeline (8) so that it is arranged to feed pressurized air into the water stream after it is discharged from the water discharge nozzle (12).
5. A marine vessel waste treatment installation according to any one of the preceding claims, characterized in that the flue gas pipeline (8) is provided with a temperature measuring unit (20) located in the flue gas pipeline (8) at a given distance (D) from the outlet (7) of the incinerator unit (4).
6. A marine vessel waste treatment installation according to any one of the preceding claims, characterized in that the given distance (D) is about 2.5 m.
7. A marine vessel waste treatment installation according to any one of the preceding claims, characterized in that the water injection device (1 1 ) is provided with a flow control means (14) for adjusting a flow volume of the water stream based on a temperature measured by the temperature measuring unit (20).
8. A marine vessel waste treatment installation according to any one of the preceding claims, characterized in that the pressurized air feed connection (16) is provided with a pressure control means (18) for adjusting a pressure of the pressurized air based on a temperature measured by the temperature measuring unit (20).
9. A method for flue gas cooling in a marine vessel (V) waste treatment installation (1 ), which installation includes at least one waste receiving unit (2), at least one waste feeding unit (3), at least one incinerator unit (4) provided with an outlet (7), and at least one flue gas pipeline (8) connected to the outlet (7), in which method the flue gas is discharged into the flue gas pipeline (8), characterized in that flue gas in the flue gas pipeline (8) is cooled to a given temperature by means of an inline cooling arrangement (10), by which inline cooling arrangement a water stream is fed directly into the flue gas pipeline (8) through a water injection nozzle (12) and by which inline cooling arrangement pressurized air is fed into the water stream.
10. A method according to claim 9, characterized in that pressurized air is fed into the water stream as it is discharged from the water injection nozzle
(12).
1 1 . A method according to claim 9, characterized in that pressurized air is fed into the water stream before it is discharged from the water injection noz- zle (12).
12. A method according to claim 9, characterized in that pressurized air is fed into the water stream after it is discharged from the water injection nozzle (12).
13. A method according to any one of claims 9-12, characterized in that the temperature of the flue gas in the flue gas discharge pipeline (8) is measured at a given distance (D) from the outlet (7).
14. A method according to any one of claims 9-13, characterized in that a flow volume of the water stream is adjusted based on the measured temperature of the flue gas.
15. A method according to any one of claims 9-14, characterized in that a pressure of the pressurized air is adjusted based on the measured temperature of the flue gas.
16. A method according to any one of claims 9-15, characterized in that the flue gas is cooled to a given temperature of under or about 250 °C at the time it reaches the given distance (D) from the outlet (7).
EP15826142.0A 2014-12-10 2015-12-10 Waste treatment installation Active EP3230654B1 (en)

Applications Claiming Priority (2)

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FI20146081A FI20146081A (en) 2014-12-10 2014-12-10 Waste Handling Equipment
PCT/FI2015/050868 WO2016092154A1 (en) 2014-12-10 2015-12-10 Waste treatment installation

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EP3230654A1 true EP3230654A1 (en) 2017-10-18
EP3230654B1 EP3230654B1 (en) 2020-03-25

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KR (1) KR102503369B1 (en)
CN (1) CN207962701U (en)
DE (1) DE212015000281U1 (en)
FI (2) FI20146081A (en)
WO (1) WO2016092154A1 (en)

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KR102255375B1 (en) * 2018-12-03 2021-05-25 이진호 Mist High-Pressure Jet Condensing System of Maximizing Deodorization and Condensation Efficiency of Discharging Vapor in Food Waste Treating Apparatus
CN110566970A (en) * 2019-09-05 2019-12-13 南通中远海运川崎船舶工程有限公司 Equipment with functions of generating inert gas and burning garbage

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JPH0391607A (en) * 1989-09-01 1991-04-17 Nippon Tsuuun Kk Dust incinerating ship
JP2565807Y2 (en) * 1992-09-02 1998-03-25 株式会社神戸製鋼所 Gas cooling chamber nozzle cleaning device
KR100345408B1 (en) 1999-01-18 2002-07-24 가부시키가이샤 다쿠마 Method and apparatus for cooling exhaust gases using heated water
JP2001269530A (en) * 2000-03-28 2001-10-02 Sumitomo Heavy Ind Ltd Water spray device and gas cooling system equipped therewith
EP1384948B1 (en) 2002-07-23 2006-05-24 Norsk Inova AS Method and device for processing wastes, in particular wet wastes in a combustion furnace
US7125007B2 (en) * 2003-06-25 2006-10-24 Spraying Systems Co. Method and apparatus for reducing air consumption in gas conditioning applications
FR2881209B1 (en) * 2005-01-21 2015-04-24 Snecma Moteurs GAS INCINERATOR INSTALLED ON A LIQUEFIED GAS TRANSPORT VESSEL
FI124473B (en) * 2009-12-15 2014-09-15 Wärtsilä Finland Oy Wiper Unit Arrangement and Method for Exhaust Gas Purification in Wiper Unit Arrangement
WO2012128721A2 (en) * 2011-03-22 2012-09-27 Keppel Offshore & Marine Technology Centre Pte Ltd Systems and methods for exhaust gas cleaning and/or ballast water treatment
CN102230627A (en) 2011-04-12 2011-11-02 安徽盛运环保设备有限公司 High-temperature tail gas quenching reaction tower of refuse combustion furnace
CN103644570A (en) 2013-12-24 2014-03-19 河南海力特机电制造有限公司 Efficient cooling device applied to rubbish incineration and achieving function through high-pressure water mist

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JP2017537297A (en) 2017-12-14
CN207962701U (en) 2018-10-12
FI20146081A (en) 2016-06-11
KR20170099938A (en) 2017-09-01
EP3230654B1 (en) 2020-03-25
FI11768U1 (en) 2017-08-25
KR102503369B1 (en) 2023-02-24
DE212015000281U1 (en) 2017-07-19
WO2016092154A1 (en) 2016-06-16

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