US20070117055A1 - Combustion apparatus for treating dry distillation gas - Google Patents
Combustion apparatus for treating dry distillation gas Download PDFInfo
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- US20070117055A1 US20070117055A1 US10/582,199 US58219904A US2007117055A1 US 20070117055 A1 US20070117055 A1 US 20070117055A1 US 58219904 A US58219904 A US 58219904A US 2007117055 A1 US2007117055 A1 US 2007117055A1
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- Prior art keywords
- gas
- pipe
- dry distillation
- combustion
- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/02—Structural details of mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/50—Cleaning devices therefor
Definitions
- the present invention relates to a combustion apparatus for combusting and treating dry distillation gas generated during a waste treatment by means of dry distillation.
- a waste treatment system comprising a combustion apparatus for treating waste by means of dry distillation in a pyrolysis furnace, with which dry distillation gas generated during the waste treatment is burnt for detoxification and resultant heat is extracted for recycling, is disclosed in patent document 1 filed by the applicant of the present application. (Japanese published patent application No.2001-108210)
- the waste treatment system disclosed in said patent document comprises a pyrolysis furnace, an inert gas generator, and a generated gas treatment device. Dry distillation residue caused by the dry distillation treatment of waste in the pyrolysis furnace is transferred to the inert gas generator and inert gas generated from the dry distillation residue is returned to the pyrolysis furnace.
- the dry distillation gas generated during the waste treatment by means of the dry distillation is burnt in the generated gas treatment device to be extracted as heat for recycling, or if the generated gas is high in heat quantity, to be reformed and recovered as oil.
- the dry distillation gas is less susceptible to dust contamination than combustion gas generated by incineration of waste, and thus it is beneficial in that combustion atmosphere can be maintained at high temperature while at the same time a level of exhaust gas can be kept low.
- the waste treatment by means of dry distillation is thus more advantageous than ordinary incineration treatment in the areas of exhaust gas detoxification and thermal recycling.
- This type of waste treatment apparatus is required to be equipped with a means of preventing a fire and an explosion.
- the dry distillation gas can still get contaminated with a small amount of dust resulting from treating various types of waste and such dust would problematically block feed openings. It is ineffectual to simply enlarge the apertures of the porous nozzle in order to solve this problem, since it would cause backfiring that would blow back through the feed openings to the pyrolysis furnace and set off an explosion.
- a flow volume and a flow rate of the dry distillation gas may change at intake openings and the feed openings where a flow channel of the dry distillation gas varies in width and direction, thus the dust contained in the dry distillation gas would become solated and remain on the wall.
- the solated material accumulated over an extended time period of continuous running of the apparatus becomes solid as time progresses, making it difficult to be removed. This can result in defects such as blocking of the feed openings, which consequently causes turbulent flow of the dry distillation gas to be supplied to the combustion chamber.
- an amount of the dry distillation gas to be supplied to the combustion chamber widely fluctuates, because of irregular generation of the dry distillation gas as a result of treating a mixture of various wastes.
- the flow rate of the dry distillation gas thus becomes turbulent, which could result in backfiring.
- the present invention intends to provide an improved combustion apparatus with a low risk of a fire and an explosion, in which a nozzle is prevented from being blocked with dust contained in dry distillation gas so that backfiring would not be caused.
- a combustion apparatus for treating dry distillation gas as defined in claim 1 comprises: a gas pipe for supplying a combustion chamber with dry distillation gas generated during a waste treatment by means of dry distillation; an air pipe for supplying a front edge of said gas pipe with combustion air; and a combustion nozzle formed at said front edge of said gas pipe; wherein, said air pipe is centrally placed inside said gas pipe so as to construct a coaxial double pipe, and said combustion nozzle is formed as a circular combustion nozzle at said front edge of said gas pipe.
- said air pipe is supported to be axially rotatable, and scrapers are further provided with blades of said scrapers being in contact with a circumference surface of said air pipe.
- an inner circumferential surface of said front edge of said gas pipe is beveled inward at predetermined angle to form a narrowed portion, and said air pipe is supported to be movable back-and-forth relative to said narrowed portion.
- FIG. 1 is a side view of a combustion apparatus for treating dry distillation gas according to the present invention.
- FIG. 2 is a partially sectional plain view of the combustion apparatus for treating dry distillation gas according to the present invention.
- FIG. 3 is a sectional view of FIG. 2 along the line F-F.
- FIG. 4 is a sectional view of FIG. 2 along the line A-A.
- FIG. 5 is a sectional view of FIG. 2 along the line C-C.
- FIG. 6 is a sectional view of FIG. 5 along the line B-B.
- FIG. 7 is a sectional view of FIG. 2 along the line D-D.
- FIG. 8 is a partially enlarged view of FIG. 2 .
- FIG. 9 is a side view of a back-and-forth shifting apparatus.
- FIG. 1 is a side view of a combustion apparatus for treating dry distillation gas 1 according to the present invention
- FIG. 2 is a partially sectional plain view of the combustion apparatus for treating dry distillation gas 1 .
- the combustion apparatus for treating dry distillation gas 1 consists of a gas feeding unit 3 and an air feeding unit 4 with an air pipe 5 running through both the feeding units.
- the gas feeding unit 3 is comprised of a gas pipe 30 and a gas feeding tower 31 .
- the air pipe 5 is placed inside the gas pipe 30 in order to form a coaxial double pipe, which is inserted into a combustion chamber 20 to form a combustion nozzle.
- the air feeding unit 4 comprises an outer cylinder 40 , to which an air feeding tower 43 is jointed.
- the air feeding unit 4 is located so as that it shields air feeding apertures 50 made on the air pipe 5 .
- a fixed base 10 and a movable base 11 facing each other are placed underneath the rear section of the air pipe 5 .
- the movable base 11 is sidably connected to the fixed base 10 via a back-and-forth shifting apparatus 6 .
- a support frame 12 and a set of four support rollers 13 are provided at each end of the movable base 11 . As shown in FIG. 3 , the rotatable support rollers 13 mounted on the support frame 12 hold a roller guide 14 that is provided on the air pipe 5 .
- FIG. 4 further shows a motor 15 mounted on the movable base 11 and a guide 51 provided around the air pipe 5 , between which a transmission means 16 such as a heat-proof belt is rolled over to allow the air pipe 5 to rotate.
- a transmission means 16 such as a heat-proof belt
- FIG. 5 is a sectional view of the gas feeding unit 3 along the line C-C and FIG. 6 is a sectional view of the gas feeding tower 31 along the line B-B.
- the gas feeding unit 3 is constructed with the gas feeding tower 31 being jointed on the circumference of the gas pipe 30 .
- the gas pipe 30 is inserted into a nozzle inserting port 21 of a combustion furnace 2 .
- a circular gap A is formed between the gas pipe 30 and the air pipe 5 coaxially placed in the gas pipe 30 .
- Dry distillation gas is supplied from the gas feeding tower 31 and runs through a cylindrical gap between the gas pipe 30 and the air pipe 5 to be finally infused into the combustion chamber 20 from the circular gap A at the front edge of the gas pipe 30 .
- a risk of backfiring can be decreased by elongating a distance between the gas feeding tower 31 and the front edge of the gas pipe 30 , since the dry distillation gas infused from the circular gap A would be more stable as said distance gets longer than it is actually required depending on gas density or flow resistance rate.
- Finders 35 are mounted on the circumference of the gas pipe 30 with an angle relative to a tangent for the purpose of viewing a state of dust adhering.
- the gas feeding tower 31 is also provided with the finders 35 .
- the finders 35 may be equipped with cleaning nozzles for cleaning a pipe wall in the dry distillation gas atmosphere.
- a pair of scrapers 33 is supported by a supporting member 32 built in the gas feeding tower 31 and blades of the scrapers 33 are in contact with the circumference of the air pipe 5 .
- the scrapers 33 are positioned so as that they are double-tiered but without having scraping areas overlap each other. As the air pipe 5 rotates, the dust accumulated on the circumference of the air pipe 5 can be scraped off.
- a tank B equipped with a seal damper 34 is located on the lower side of the gas feeding tower 31 .
- a sliding seal damper 34 is used for sealing the tank B from the gas feeding tower 31 that is under the dry distillation gas atmosphere.
- the tank B is further provided with a vent. As the tank B can be sealed off with the seal damper 34 , scraped dust pieces in the tank B can be regularly taken out from the vent even when the combustion chamber is running.
- the seal damper 34 can take forms other than sliding type, such as a butterfly type.
- FIG. 7 is a sectional view of the air feeding unit 4 along the line D-D.
- the air feeding unit 4 comprises the outer cylinder 40 and the air feeding tower 43 .
- the outer cylinder 40 is sectioned into an upper outer cylinder 41 and a lower outer cylinder 42 , and the air feeding tower 43 is integrally connected to the lower outer cylinder 42 .
- the air pipe 5 has the air feeding apertures 50 , which are dividing the circumference of the air pipe 5 into 5 segments in the embodiment of FIG. 5 .
- the upper outer cylinder 41 and the lower outer cylinder 42 are jointed together to cover said air feeding apertures 50 .
- Combustion air is supplied from the air feeding tower 43 and passes through the air feeding apertures 50 to enter into the air pipe 5 .
- the combustion air then runs through the air pipe 5 and is eventually delivered into the combustion chamber 20 via an air feeding port 52 .
- the combustion air and the dry distillation gas are thus blended to be burnt together, and generate an inert gas such as carbon dioxide.
- FIG. 8 is a partially sectional plain view of a nozzle.
- the aforesaid gas pipe has its front inner circumference beveled inward to form a narrowed portion.
- a corner of the combustion chamber at the nozzle inserting inlet 21 is alternatively formed with an angle ⁇ , but the gas pipe 30 may instead be formed with an angle at its front edge to form the narrowed portion.
- the air pipe 5 also has its front edge beveled inward with an angle ⁇ , which is smaller than the angle ⁇ . The opening width of the circular gap A can be adjusted by these angles ⁇ and ⁇ together with the back-and-forth shifting apparatus 6 , whose details will be explained later.
- a packing stopper 36 is provided on the inner wall of the gas pipe 30 .
- a packing 38 is impregnated with a substance such as carbon so that it achieves heat resistance along with decay resistance, and is fitted into the circular gap A. The packing 38 is then pressed with a presser flange to be bonded by pressure.
- the packing 38 is used for sealing a jointed region of the upper outer cylinder 41 and the lower outer cylinder 42 as well as a contact site of the air pipe 5 and the outer cylinder 40 so as to form a so called “swivel” structure.
- the dry distillation gas and the combustion air would not only contain toxic components, but also they could reach a very high temperature. It is therefore necessary that areas being under the dry distillation gas atmosphere or the combustion air atmosphere be blocked from outside air by means such as the packing 38 .
- the dry distillation gas and the combustion air in fact reach a few hundreds degrees C. in temperature, and thus the belt used as the transmission means 16 and the packing 38 need to be provided with sufficient heat resistance and decay resistance.
- FIG. 9 is a side view of the back-and-forth shifting apparatus 6 .
- the back-and-forth shifting apparatus 6 has a handled screw shaft 60 .
- the movable base 11 can be moved back-and-forth relative to the fixed base by turning the handled screw shaft 60 .
- This back-and-forth movement is transmitted via the support rollers 13 and shifts the air pipe 5 back-and-forth as well, thereby adjusting the opening width of the circular combustion nozzle.
- the dry distillation gas is supplied from the gas feeding unit 3 and runs through a cylindrical gap between the gas pipe 30 and the air pipe 5 to be finally infused into the combustion chamber 20 from the circular gap A at the front edge of the gas pipe 30 .
- the combustion air is supplied from the air feeding tower 43 and passes through the air feeding apertures 50 to enter into the air pipe 5 .
- the combustion air then runs through the air pipe 5 and is eventually delivered into the combustion chamber 20 via an air feeding port 52 , where the combustion air and the dry distillation gas are blended and burnt together.
- the amount of the dry distillation gas to be generated would largely fluctuate depending on types and conditions of waste, but the amount of the dry distillation gas to be supplied can be stabilized by adjusting the width of the circular gap A with the aid of the angle ⁇ and ⁇ given at the front edge of the gas pipe 30 together with the back-and-forth shifting apparatus 6 .
- the finders 35 are mounted on the circumference of the gas pipe 30 , enabling viewing of the pipe wall to which the dust contained in the dry distillation gas would adhere.
- the finders 35 may be equipped with the cleaning nozzles so that the pipe wall under the dry distillation gas atmosphere can be cleaned when the combustion apparatus is not in operation.
- the present invention is arranged with the scrapers 33 being in contact with the circumference of the air pipe 5 that is rotatably supported by way of the support rollers 13 mounted on the movable base 11 , the motor 15 , and the transmission means 16 , and therefore the dust accumulated on the pipe wall of the air pipe 5 can be scrapped off even while the dry distillation treatment is being operated.
- the dust so scraped from the pipe wall are dropped in the tank B that is located on the lower side of the gas feeding tower 31 , and can be regularly or continuously taken out therefrom.
- the combustion air as previously described may be replaced by high-temperature steam.
- the dry distillation gas When the dry distillation gas is exposed to the high-temperature steam, it becomes separated and generates inert gas such as carbon dioxide, thereby producing the identical effects of the combustion air.
- the volume of the gas to be finally exhausted can be significantly reduced, since the high-temperature steam does not contain nitrogen.
- the present invention is constructed in a double pipe structure so that it forms the circular combustion nozzle, thereby achieving the feed opening for the dry distillation gas with sufficient width.
- a large amount of the dry distillation gas can be evenly supplied and a blockage of the feed opening with dust pieces can be prevented, thereby lowering a danger of backfiring.
- the present invention is constructed with the rotatable air pipe and the scrapers, with which the dust accumulated on the pipe wall can be scraped off while the apparatus is continuously being in operation.
- the dry distillation gas can be stably supplied from the feed opening without any turbulence, thereby preventing backfiring.
- the present invention is constructed with the air pipe that is movable back-and-forth so that the width of the circular combustion nozzle can be adjusted in proportion to the amount of the generated dry distillation gas.
- the dry distillation gas can be supplied from the feed opening at a constant flow volume and a flow rate, thereby preventing backfiring.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
Abstract
The present invention intends to provide an improved combustion apparatus with a low risk of a fire and an explosion, in which a nozzle is prevented from being blocked with dust contained in dry distillation gas so that backfiring would not be caused. A combustion apparatus for treating dry distillation gas is thus constructed with a gas pipe for supplying a combustion chamber with dry distillation gas generated during a waste treatment by means of dry distillation and an air pipe for supplying a front edge of the gas pipe with combustion air, wherein the air pipe is placed inside the gas pipe to construct a coaxial double pipe so that it forms a circular combustion nozzle at the front edge of the gas pipe.
Description
- The present invention relates to a combustion apparatus for combusting and treating dry distillation gas generated during a waste treatment by means of dry distillation.
- A waste treatment system comprising a combustion apparatus for treating waste by means of dry distillation in a pyrolysis furnace, with which dry distillation gas generated during the waste treatment is burnt for detoxification and resultant heat is extracted for recycling, is disclosed in
patent document 1 filed by the applicant of the present application. (Japanese published patent application No.2001-108210) - The waste treatment system disclosed in said patent document comprises a pyrolysis furnace, an inert gas generator, and a generated gas treatment device. Dry distillation residue caused by the dry distillation treatment of waste in the pyrolysis furnace is transferred to the inert gas generator and inert gas generated from the dry distillation residue is returned to the pyrolysis furnace. The dry distillation gas generated during the waste treatment by means of the dry distillation is burnt in the generated gas treatment device to be extracted as heat for recycling, or if the generated gas is high in heat quantity, to be reformed and recovered as oil.
- The dry distillation gas is less susceptible to dust contamination than combustion gas generated by incineration of waste, and thus it is beneficial in that combustion atmosphere can be maintained at high temperature while at the same time a level of exhaust gas can be kept low. The waste treatment by means of dry distillation is thus more advantageous than ordinary incineration treatment in the areas of exhaust gas detoxification and thermal recycling.
- This type of waste treatment apparatus is required to be equipped with a means of preventing a fire and an explosion.
- Conventionally, multiple nozzles with small diameter are bundled to act as a porous nozzle and used for burning the dry distillation gas. Combustion air is infused from the circumference space of each nozzle into the combustion chamber so that it mixes with the dry distillation gas and increases combustion temperature. With this arrangement, backfiring can be prevented by using the nozzles with small diameter.
- Disadvantageously, however, the dry distillation gas can still get contaminated with a small amount of dust resulting from treating various types of waste and such dust would problematically block feed openings. It is ineffectual to simply enlarge the apertures of the porous nozzle in order to solve this problem, since it would cause backfiring that would blow back through the feed openings to the pyrolysis furnace and set off an explosion.
- Also disadvantageously, a flow volume and a flow rate of the dry distillation gas may change at intake openings and the feed openings where a flow channel of the dry distillation gas varies in width and direction, thus the dust contained in the dry distillation gas would become solated and remain on the wall.
- The solated material accumulated over an extended time period of continuous running of the apparatus becomes solid as time progresses, making it difficult to be removed. This can result in defects such as blocking of the feed openings, which consequently causes turbulent flow of the dry distillation gas to be supplied to the combustion chamber.
- Still disadvantageously, an amount of the dry distillation gas to be supplied to the combustion chamber widely fluctuates, because of irregular generation of the dry distillation gas as a result of treating a mixture of various wastes. The flow rate of the dry distillation gas thus becomes turbulent, which could result in backfiring.
- The present invention intends to provide an improved combustion apparatus with a low risk of a fire and an explosion, in which a nozzle is prevented from being blocked with dust contained in dry distillation gas so that backfiring would not be caused.
- In order to achieve this objective, a combustion apparatus for treating dry distillation gas as defined in
claim 1 comprises: a gas pipe for supplying a combustion chamber with dry distillation gas generated during a waste treatment by means of dry distillation; an air pipe for supplying a front edge of said gas pipe with combustion air; and a combustion nozzle formed at said front edge of said gas pipe; wherein, said air pipe is centrally placed inside said gas pipe so as to construct a coaxial double pipe, and said combustion nozzle is formed as a circular combustion nozzle at said front edge of said gas pipe. - In the combustion apparatus for treating dry distillation gas as defined in
claim 2, said air pipe is supported to be axially rotatable, and scrapers are further provided with blades of said scrapers being in contact with a circumference surface of said air pipe. - In the combustion apparatus for treating dry distillation gas as defined in
claim 3, an inner circumferential surface of said front edge of said gas pipe is beveled inward at predetermined angle to form a narrowed portion, and said air pipe is supported to be movable back-and-forth relative to said narrowed portion. -
FIG. 1 is a side view of a combustion apparatus for treating dry distillation gas according to the present invention. -
FIG. 2 is a partially sectional plain view of the combustion apparatus for treating dry distillation gas according to the present invention. -
FIG. 3 is a sectional view ofFIG. 2 along the line F-F. -
FIG. 4 is a sectional view ofFIG. 2 along the line A-A. -
FIG. 5 is a sectional view ofFIG. 2 along the line C-C. -
FIG. 6 is a sectional view ofFIG. 5 along the line B-B. -
FIG. 7 is a sectional view ofFIG. 2 along the line D-D. -
FIG. 8 is a partially enlarged view ofFIG. 2 . -
FIG. 9 is a side view of a back-and-forth shifting apparatus. - The present invention would be better understood when explained with references to the attached drawings.
FIG. 1 is a side view of a combustion apparatus for treatingdry distillation gas 1 according to the present invention, andFIG. 2 is a partially sectional plain view of the combustion apparatus for treatingdry distillation gas 1. - The combustion apparatus for treating
dry distillation gas 1 consists of agas feeding unit 3 and anair feeding unit 4 with anair pipe 5 running through both the feeding units. - The
gas feeding unit 3 is comprised of agas pipe 30 and agas feeding tower 31. Theair pipe 5 is placed inside thegas pipe 30 in order to form a coaxial double pipe, which is inserted into acombustion chamber 20 to form a combustion nozzle. - The
air feeding unit 4 comprises anouter cylinder 40, to which anair feeding tower 43 is jointed. Theair feeding unit 4 is located so as that it shieldsair feeding apertures 50 made on theair pipe 5. - A
fixed base 10 and amovable base 11 facing each other are placed underneath the rear section of theair pipe 5. Themovable base 11 is sidably connected to thefixed base 10 via a back-and-forth shiftingapparatus 6. - A
support frame 12 and a set of foursupport rollers 13 are provided at each end of themovable base 11. As shown inFIG. 3 , therotatable support rollers 13 mounted on thesupport frame 12 hold aroller guide 14 that is provided on theair pipe 5. -
FIG. 4 further shows amotor 15 mounted on themovable base 11 and aguide 51 provided around theair pipe 5, between which a transmission means 16 such as a heat-proof belt is rolled over to allow theair pipe 5 to rotate. -
FIG. 5 is a sectional view of thegas feeding unit 3 along the line C-C andFIG. 6 is a sectional view of thegas feeding tower 31 along the line B-B. - The
gas feeding unit 3 is constructed with thegas feeding tower 31 being jointed on the circumference of thegas pipe 30. Thegas pipe 30 is inserted into anozzle inserting port 21 of acombustion furnace 2. A circular gap A is formed between thegas pipe 30 and theair pipe 5 coaxially placed in thegas pipe 30. - Dry distillation gas is supplied from the
gas feeding tower 31 and runs through a cylindrical gap between thegas pipe 30 and theair pipe 5 to be finally infused into thecombustion chamber 20 from the circular gap A at the front edge of thegas pipe 30. - A risk of backfiring can be decreased by elongating a distance between the
gas feeding tower 31 and the front edge of thegas pipe 30, since the dry distillation gas infused from the circular gap A would be more stable as said distance gets longer than it is actually required depending on gas density or flow resistance rate. -
Finders 35 are mounted on the circumference of thegas pipe 30 with an angle relative to a tangent for the purpose of viewing a state of dust adhering. Thegas feeding tower 31 is also provided with thefinders 35. Thefinders 35 may be equipped with cleaning nozzles for cleaning a pipe wall in the dry distillation gas atmosphere. - A pair of
scrapers 33 is supported by a supportingmember 32 built in thegas feeding tower 31 and blades of thescrapers 33 are in contact with the circumference of theair pipe 5. Thescrapers 33 are positioned so as that they are double-tiered but without having scraping areas overlap each other. As theair pipe 5 rotates, the dust accumulated on the circumference of theair pipe 5 can be scraped off. - A tank B equipped with a
seal damper 34 is located on the lower side of thegas feeding tower 31. In an embodiment illustrated inFIGS. 5 and 6 , asliding seal damper 34 is used for sealing the tank B from thegas feeding tower 31 that is under the dry distillation gas atmosphere. The tank B is further provided with a vent. As the tank B can be sealed off with theseal damper 34, scraped dust pieces in the tank B can be regularly taken out from the vent even when the combustion chamber is running. Theseal damper 34 can take forms other than sliding type, such as a butterfly type. -
FIG. 7 is a sectional view of theair feeding unit 4 along the line D-D. Theair feeding unit 4 comprises theouter cylinder 40 and theair feeding tower 43. Theouter cylinder 40 is sectioned into an upperouter cylinder 41 and a lowerouter cylinder 42, and theair feeding tower 43 is integrally connected to the lowerouter cylinder 42. Theair pipe 5 has theair feeding apertures 50, which are dividing the circumference of theair pipe 5 into 5 segments in the embodiment ofFIG. 5 . The upperouter cylinder 41 and the lowerouter cylinder 42 are jointed together to cover saidair feeding apertures 50. - Combustion air is supplied from the
air feeding tower 43 and passes through theair feeding apertures 50 to enter into theair pipe 5. The combustion air then runs through theair pipe 5 and is eventually delivered into thecombustion chamber 20 via anair feeding port 52. - The combustion air and the dry distillation gas are thus blended to be burnt together, and generate an inert gas such as carbon dioxide.
-
FIG. 8 is a partially sectional plain view of a nozzle. - The aforesaid gas pipe has its front inner circumference beveled inward to form a narrowed portion. In the illustrated embodiment, a corner of the combustion chamber at the
nozzle inserting inlet 21 is alternatively formed with an angle α, but thegas pipe 30 may instead be formed with an angle at its front edge to form the narrowed portion. Theair pipe 5 also has its front edge beveled inward with an angle β, which is smaller than the angle α. The opening width of the circular gap A can be adjusted by these angles α and β together with the back-and-forth shifting apparatus 6, whose details will be explained later. - In the
gas feeding unit 3, a packingstopper 36 is provided on the inner wall of thegas pipe 30. A packing 38 is impregnated with a substance such as carbon so that it achieves heat resistance along with decay resistance, and is fitted into the circular gap A. The packing 38 is then pressed with a presser flange to be bonded by pressure. - Also in the
air feeding unit 4, the packing 38 is used for sealing a jointed region of the upperouter cylinder 41 and the lowerouter cylinder 42 as well as a contact site of theair pipe 5 and theouter cylinder 40 so as to form a so called “swivel” structure. - The dry distillation gas and the combustion air would not only contain toxic components, but also they could reach a very high temperature. It is therefore necessary that areas being under the dry distillation gas atmosphere or the combustion air atmosphere be blocked from outside air by means such as the packing 38. The dry distillation gas and the combustion air in fact reach a few hundreds degrees C. in temperature, and thus the belt used as the transmission means 16 and the packing 38 need to be provided with sufficient heat resistance and decay resistance.
-
FIG. 9 is a side view of the back-and-forth shifting apparatus 6. - The back-and-
forth shifting apparatus 6 has a handledscrew shaft 60. Themovable base 11 can be moved back-and-forth relative to the fixed base by turning the handledscrew shaft 60. This back-and-forth movement is transmitted via thesupport rollers 13 and shifts theair pipe 5 back-and-forth as well, thereby adjusting the opening width of the circular combustion nozzle. - The present invention constructed as described above will operate as follows.
- The dry distillation gas is supplied from the
gas feeding unit 3 and runs through a cylindrical gap between thegas pipe 30 and theair pipe 5 to be finally infused into thecombustion chamber 20 from the circular gap A at the front edge of thegas pipe 30. - The combustion air is supplied from the
air feeding tower 43 and passes through theair feeding apertures 50 to enter into theair pipe 5. The combustion air then runs through theair pipe 5 and is eventually delivered into thecombustion chamber 20 via anair feeding port 52, where the combustion air and the dry distillation gas are blended and burnt together. - The amount of the dry distillation gas to be generated would largely fluctuate depending on types and conditions of waste, but the amount of the dry distillation gas to be supplied can be stabilized by adjusting the width of the circular gap A with the aid of the angle α and β given at the front edge of the
gas pipe 30 together with the back-and-forth shifting apparatus 6. - The
finders 35 are mounted on the circumference of thegas pipe 30, enabling viewing of the pipe wall to which the dust contained in the dry distillation gas would adhere. Thefinders 35 may be equipped with the cleaning nozzles so that the pipe wall under the dry distillation gas atmosphere can be cleaned when the combustion apparatus is not in operation. At the same time, however, the present invention is arranged with thescrapers 33 being in contact with the circumference of theair pipe 5 that is rotatably supported by way of thesupport rollers 13 mounted on themovable base 11, themotor 15, and the transmission means 16, and therefore the dust accumulated on the pipe wall of theair pipe 5 can be scrapped off even while the dry distillation treatment is being operated. - The dust so scraped from the pipe wall are dropped in the tank B that is located on the lower side of the
gas feeding tower 31, and can be regularly or continuously taken out therefrom. - The combustion air as previously described may be replaced by high-temperature steam. When the dry distillation gas is exposed to the high-temperature steam, it becomes separated and generates inert gas such as carbon dioxide, thereby producing the identical effects of the combustion air. Even advantageously, the volume of the gas to be finally exhausted can be significantly reduced, since the high-temperature steam does not contain nitrogen.
- As defined in
claim 1, the present invention is constructed in a double pipe structure so that it forms the circular combustion nozzle, thereby achieving the feed opening for the dry distillation gas with sufficient width. With this arrangement, a large amount of the dry distillation gas can be evenly supplied and a blockage of the feed opening with dust pieces can be prevented, thereby lowering a danger of backfiring. - As defined in
claim 2, the present invention is constructed with the rotatable air pipe and the scrapers, with which the dust accumulated on the pipe wall can be scraped off while the apparatus is continuously being in operation. With this arrangement, the dry distillation gas can be stably supplied from the feed opening without any turbulence, thereby preventing backfiring. - As defined in
claim 3, the present invention is constructed with the air pipe that is movable back-and-forth so that the width of the circular combustion nozzle can be adjusted in proportion to the amount of the generated dry distillation gas. With this arrangement, the dry distillation gas can be supplied from the feed opening at a constant flow volume and a flow rate, thereby preventing backfiring.
Claims (3)
1. (canceled)
2. A combustion apparatus for treating dry distillation gas, comprising: a gas pipe for supplying a combustion chamber with dry distillation gas generated during a waste treatment by means of dry distillation; an air pipe for supplying a front edge of said gas pipe with combustion air; and a combustion nozzle formed at said front edge of said gas pipe; wherein, said air pipe is centrally placed inside said gas pipe so as to construct a coaxial double pipe, said combustion nozzle is formed as a circular combustion nozzle at said front edge of said gas pipe, said air pipe is supported to be axially rotatable, and scrapers are further provided with blades of said scrapers being in contact with a circumference surface of said air pipe.
3. A combustion apparatus for treating dry distillation gas, comprising: a gas pipe for supplying a combustion chamber with dry distillation gas generated during a waste treatment by means of dry distillation; an air pipe for supplying a front edge of said gas pipe with combustion air; and a combustion nozzle formed at said front edge of said gas pipe; wherein, said air pipe is centrally placed inside said gas pipe so as to construct a coaxial double pipe, said combustion nozzle is formed as a circular combustion nozzle at said front edge of said gas pipe, an inner circumferential surface of said front edge of said gas pipe is beveled inward at predetermined angle to form a narrowed portion, and said air pipe is supported to be movable back-and-forth relative to said narrowed portion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003411733 | 2003-12-10 | ||
JP2003-411733 | 2003-12-10 | ||
PCT/JP2004/018686 WO2005057084A1 (en) | 2003-12-10 | 2004-12-08 | Combustion device for treating carbonization gas |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070117055A1 true US20070117055A1 (en) | 2007-05-24 |
Family
ID=34675004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/582,199 Abandoned US20070117055A1 (en) | 2003-12-10 | 2004-12-08 | Combustion apparatus for treating dry distillation gas |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070117055A1 (en) |
EP (1) | EP1701093A1 (en) |
JP (1) | JPWO2005057084A1 (en) |
KR (1) | KR20060126496A (en) |
CN (1) | CN1890507A (en) |
CA (1) | CA2548789A1 (en) |
NO (1) | NO20063201L (en) |
TW (1) | TW200523506A (en) |
WO (1) | WO2005057084A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2494310C1 (en) * | 2012-04-26 | 2013-09-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Burner device for combustion of industrial wastes |
RU2494311C1 (en) * | 2012-04-26 | 2013-09-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Industrial wastes combustion method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104896472A (en) * | 2015-06-18 | 2015-09-09 | 绵竹市三友机械设备制造厂 | Adjustable spray gun |
CN112923360B (en) * | 2021-02-02 | 2021-08-17 | 东莞粤丰环保电力有限公司 | Rotary combustion system based on automatic control |
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US5125227A (en) * | 1990-07-10 | 1992-06-30 | General Electric Company | Movable combustion system for a gas turbine |
US5768893A (en) * | 1994-01-25 | 1998-06-23 | Hoshino; Kenzo | Turbine with internal heating passages |
US5919493A (en) * | 1992-10-13 | 1999-07-06 | Ushers, Inc. | Apparatus for producing shaped articles |
US20040173128A1 (en) * | 2003-03-05 | 2004-09-09 | Advanced Burner Technologies Corporation | Balancing damper |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5699209U (en) * | 1979-12-26 | 1981-08-05 | ||
JP2740201B2 (en) * | 1988-09-05 | 1998-04-15 | バブコツク日立株式会社 | Pulverized coal burner |
JPH09243027A (en) * | 1996-03-12 | 1997-09-16 | Mitsui Eng & Shipbuild Co Ltd | Combustion burner and combustion method |
JPH10205722A (en) * | 1997-01-16 | 1998-08-04 | Mitsui Eng & Shipbuild Co Ltd | Gas burner structure of combustion melting furnace and waste treatment device |
-
2004
- 2004-11-25 TW TW093136346A patent/TW200523506A/en unknown
- 2004-12-08 KR KR1020067011491A patent/KR20060126496A/en not_active Application Discontinuation
- 2004-12-08 WO PCT/JP2004/018686 patent/WO2005057084A1/en not_active Application Discontinuation
- 2004-12-08 EP EP04807045A patent/EP1701093A1/en not_active Withdrawn
- 2004-12-08 CA CA002548789A patent/CA2548789A1/en active Pending
- 2004-12-08 CN CNA200480036734XA patent/CN1890507A/en active Pending
- 2004-12-08 US US10/582,199 patent/US20070117055A1/en not_active Abandoned
- 2004-12-08 JP JP2005516236A patent/JPWO2005057084A1/en active Pending
-
2006
- 2006-07-10 NO NO20063201A patent/NO20063201L/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5125227A (en) * | 1990-07-10 | 1992-06-30 | General Electric Company | Movable combustion system for a gas turbine |
US5919493A (en) * | 1992-10-13 | 1999-07-06 | Ushers, Inc. | Apparatus for producing shaped articles |
US5768893A (en) * | 1994-01-25 | 1998-06-23 | Hoshino; Kenzo | Turbine with internal heating passages |
US20040173128A1 (en) * | 2003-03-05 | 2004-09-09 | Advanced Burner Technologies Corporation | Balancing damper |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2494310C1 (en) * | 2012-04-26 | 2013-09-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Burner device for combustion of industrial wastes |
RU2494311C1 (en) * | 2012-04-26 | 2013-09-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Industrial wastes combustion method |
Also Published As
Publication number | Publication date |
---|---|
CN1890507A (en) | 2007-01-03 |
EP1701093A1 (en) | 2006-09-13 |
JPWO2005057084A1 (en) | 2007-08-23 |
CA2548789A1 (en) | 2005-06-23 |
NO20063201L (en) | 2006-07-10 |
TW200523506A (en) | 2005-07-16 |
WO2005057084A1 (en) | 2005-06-23 |
KR20060126496A (en) | 2006-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |