WO2001038788A1 - Structure de pile - Google Patents

Structure de pile Download PDF

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Publication number
WO2001038788A1
WO2001038788A1 PCT/JP2000/008146 JP0008146W WO0138788A1 WO 2001038788 A1 WO2001038788 A1 WO 2001038788A1 JP 0008146 W JP0008146 W JP 0008146W WO 0138788 A1 WO0138788 A1 WO 0138788A1
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WO
WIPO (PCT)
Prior art keywords
exhaust gas
carbon dioxide
structure according
stack
chimney structure
Prior art date
Application number
PCT/JP2000/008146
Other languages
English (en)
Japanese (ja)
Inventor
Yoshikazu Kitano
Original Assignee
Kabushiki Kaisha Maruki
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 Kabushiki Kaisha Maruki filed Critical Kabushiki Kaisha Maruki
Publication of WO2001038788A1 publication Critical patent/WO2001038788A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • 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
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • 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
    • F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
    • F23G7/085—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/02—Linings; Jackets; Casings
    • F23J13/025—Linings; Jackets; Casings composed of concentric elements, e.g. double walled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation

Definitions

  • the present invention relates to a chimney structure capable of halving the height of a chimney and removing harmful carbon dioxide from combustion gas.
  • Carbon dioxide itself is also a major component of the atmosphere, and has not been a problem since it did not have a direct adverse effect on the human body as did Daidai Toxin and other harmful substances. Carbon dioxide is rapidly increasing and is facing a very serious problem of global warming.
  • a porous stack is provided in a pipe having a base end communicating with a combustion chamber and an exhaust gas port provided at a front end to form a combustion gas flow path. It was arranged. Therefore, with such a stack, a dream pipe effect accompanied by heat transport is produced, the temperature of the chimney outlet can be significantly reduced, and secondary generation of dioxin can be prevented. Therefore, it can be used for small incinerators and the like, and even for large incinerators, the height of the chimney to be constructed can be reduced and the construction cost can be reduced.
  • the pipe is bent in an inverted U-shape, and a porous stack is disposed in a combustion gas flow path formed in the pipe. Therefore, the height of the chimney can be made lower, and even if the exhaust gas outlet is close to the surface of the ground, the stack also has a dream pipe effect with heat transport due to the arrangement of the stack. Can be significantly reduced, and there is no danger of the adverse effects of smoke and high-gas.
  • the base end of the inner cylindrical body having an open upper end is communicated with the combustion chamber, and the upper end is closed so as to include the inner cylindrical body, and the exhaust gas port is formed in the middle of the cylindrical body.
  • the formed outer cylinder is disposed, and a combustion gas flow path is formed by communicating a tubular flow path inside the inner cylinder with an annular flow path formed between the inner cylinder and the outer cylinder.
  • a porous stack was installed in the combustion gas channel. Therefore, the chimney to be constructed has a double structure that can reduce the height by half while securing the required length of the exhaust gas flow path, and can reduce the height and the construction cost.
  • the arrangement of the stack produces a dream pipe effect accompanied by heat transport, which can significantly reduce the temperature of the smoke outlet. There is no risk of adverse effects due to gas.
  • a double pipe structure consisting of a tubular flow path and an annular flow path is used. The frequency of the generated sound can be canceled out, and silence can be achieved.
  • a filter is provided in the combustion gas flow path. Therefore, soot and dust can be adsorbed, and clean exhaust gas can be obtained.
  • the exhaust gas device is connected to the exhaust gas processing means. Therefore, there is no need to worry about environmental pollution because the exhaust gas is clean.
  • a blower is provided in the exhaust gas port. Therefore, the exhaust gas from the combustion chamber can be efficiently guided to the exhaust gas treatment means.
  • the sock is formed of a porous ceramic. Therefore, the existing material can be used as the stack, and the stack can be easily obtained, and the dream pipe effect can be further enhanced.
  • the exhaust gas treating means is a gas generating unit that generates a methane gas by causing a reduction reaction of carbon dioxide with water using a photocatalyst. Therefore, by replacing this with methane gas without emitting carbon dioxide into the atmosphere, it can be effectively used as an external energy source such as a power source or a heat source.
  • the gas generating unit includes: a combustion gas storage chamber; a water tank connected to the combustion gas storage chamber; and a methane gas purification chamber connected to the water tank.
  • a photocatalyst in which palladium was supported on the surface of titanium oxide was dispersed in the part.
  • a solid-state semiconductor photocatalyst that can utilize water as a reducing agent and that can accumulate multiple electrons, carbon dioxide can be efficiently reduced, and the efficiency of producing menthane gas can be improved.
  • the exhaust gas treatment means is a carbon dioxide recovery tank containing a processing solution in which calcium hydroxide is dissolved, and the carbon dioxide contained in the combustion gas can be recovered as calcium carbonate. did. Therefore, carbon dioxide generated by combustion can be recovered in a stable state.
  • the inside of the carbon dioxide recovery tank is maintained at a negative pressure. Therefore, the combustion gas can be effectively drawn into the carbon dioxide capture tank.
  • the exhaust gas treatment means separates the exhausted gas into nitrogen and carbon dioxide via a NOx decomposition catalyst, and generates the separated carbon dioxide and a hydrogen generator. By reacting with hydrogen, methanol could be produced. Therefore, by replacing methanol with methanol without emitting carbon dioxide to the atmosphere, it can be effectively used as an external energy source such as a power source or a heat source.
  • the exhaust gas treatment means separates the exhausted gas into nitrogen and carbon dioxide via a NOx decomposition catalyst, and generates the separated carbon dioxide and the hydrogen from the hydrogen generator. By reacting with hydrogen, carbon could be generated. Therefore, it can be replaced with pure carbon as a resource without emitting carbon dioxide into the atmosphere.
  • a cooling circuit for cooling the surface of the stack is provided. Therefore, the exhaust gas temperature can be efficiently reduced.
  • FIG. 2 is a schematic explanatory view of a chimney structure according to the first embodiment.
  • FIG. 8 is a schematic explanatory view of a chimney structure according to a second embodiment.
  • FIG. 9 is a schematic explanatory view of a chimney structure according to a third embodiment.
  • FIG. 9 is a schematic explanatory view of a chimney structure according to a fourth embodiment.
  • FIG. 8 is an explanatory view showing a modified example of the exhaust gas processing means in the embodiment c.
  • FIG. 14 is a schematic explanatory view of a chimney structure according to a fifth embodiment.
  • FIG. 4 is an explanatory diagram of a stack cooling unit. BEST MODE FOR CARRYING OUT THE INVENTION
  • a porous stack is disposed in a pipe in which a base end communicates with a combustion chamber, an exhaust gas port is provided at a tip end, and a combustion gas flow path is formed.
  • the tube may have an upright structure or a slightly inclined structure.
  • the high-grade exhaust gas can be cooled down to about room temperature near the smoke outlet by the dream pipe effect, and the secondary daisy toxin is generated. That is to prevent that.
  • soot and dust can be captured by the stack.
  • the chimney can be made relatively low, and the construction cost can be greatly reduced.
  • Such a structure can be adopted for a small incinerator or the like, and can be easily installed in a school or other facilities.
  • tubular body may be bent in an inverted U-shape, and the porous stack described above may be disposed in a combustion gas flow passage formed in the tubular body.
  • the above-mentioned stack can be formed of porous ceramics.
  • existing materials such as a catalyst disposed in an exhaust pipe of an automobile can be used as a sock, so that the material can be easily obtained and the dream pipe effect can be further enhanced.
  • the above-mentioned tubular body may be bent in an inverted U-shape, and the porous stack described above may be provided in a combustion gas flow path formed in the tubular body. If this chimney structure is bent in a U-shape, the height of the chimney can be further reduced.In addition, since the tip, which is the exhaust gas outlet, is also located near the ground, construction costs can be reduced. It can be greatly reduced.
  • a configuration having a cooling circuit for cooling the surface of the stack may be employed.
  • Such a rejection circuit allows the exhaust gas temperature to be reduced more efficiently.Furthermore, the exhaust gas can be communicated with the exhaust gas treatment means, and the harmful substances contained in the exhaust gas are removed and then discharged to the atmosphere. You can also. At this time, if the temperature of the exhaust gas at the inlet of the exhaust gas treatment means is as high as about 300 ° C, it is reported that a large amount of dioxin is generated in the treatment means. According to Ming, it will also be effective in controlling daisies.
  • a special filter for soot and dust as well as a stack can be provided in the pipe.
  • the placement location may be located at either the top or bottom of the stack or at both locations as required.
  • the combustion chamber is configured to be capable of high-temperature combustion at 1000 to 1500 ° C, it is possible to remove dioxin, which has recently become a problem, in the combustion chamber.
  • a blower can be provided in the exhaust gas port. That is, the exhaust gas from the combustion chamber is forcibly sucked by the blower and can be efficiently guided to the exhaust gas treatment means.
  • the present invention particularly provides carbon dioxide, which causes global warming, to the atmosphere. Since it also has the purpose of preventing discharge, the exhaust gas treatment means can have the following configuration.
  • the exhaust gas processing means is a gas generating unit that generates a methane gas by causing a reduction reaction of carbon dioxide with water using a photocatalyst.
  • the gas generating section includes a combustion gas storage chamber, a water tank communicating with the combustion gas storage chamber, and a methane gas purification chamber communicating with the water tank.
  • a photocatalyst carrying palladium on the surface is dispersed, water can be used as a reducing agent and a solid-state photocatalyst capable of accumulating multiple electrons can be used to efficiently reduce carbon dioxide. It can be reduced and the efficiency of menthol gas generation can be improved.
  • carbon dioxide can be effectively used as an external energy source such as a power source or a heat source by replacing it with methane gas without discharging carbon dioxide into the atmosphere.
  • the chimney to be constructed is short, which can reduce construction costs and eliminate the concern of environmental pollution. Also, since the temperature of the smoke outlet can be greatly reduced, there is no danger of soot or high-grade gas even if the exhaust gas outlet is close to the ground.
  • the above-mentioned dream pipe effect has been analyzed by thermoacoustic theory, which has been studied in recent years.
  • the exhaust gas treatment means is a carbon dioxide recovery tank containing a treatment solution in which calcium hydroxide is dissolved, and carbon dioxide contained in the combustion gas can be recovered as carbon dioxide.
  • Carbon dioxide is known to react with calcium hydroxide to form calcium carbonate and water.
  • Calcium carbonate acts as a reservoir for carbon dioxide and exists naturally in a stable form as calcite.
  • the carbon dioxide generated by combustion can be recovered in a stable state without being released to the atmosphere.
  • calcium carbonate which can be used as an absorbent for use in the desulfurization apparatus, in this case, it is reacted with SO x in the exhaust gas Plaster can also be obtained as a by-product.
  • the inside of the carbon dioxide recovery tank is maintained at a negative pressure, and the combustion gas from the combustion chamber passing through the inverted U-shaped pipe is effectively drawn in even if the above-mentioned blower device or the like is not particularly provided. be able to.
  • the exhausted gas is separated into nitrogen and carbon dioxide through the decomposition catalyst of ⁇ , and the separated carbon dioxide and hydrogen generated from the hydrogen generator are separated. It can be reacted to produce a methyl alcohol.
  • the exhaust gas is separated into nitrogen and carbon dioxide via the decomposition catalyst of ⁇ , and the separated carbon dioxide reacts with the hydrogen generated from the hydrogen generator to produce carbon. Can be generated.
  • a base end of an inner cylindrical body having an open upper end is communicated with the combustion chamber, and the upper end is closed so as to include the inner cylindrical body.
  • An outer cylinder having an exhaust slot formed in the middle thereof is provided, and a tubular channel inside the inner cylinder communicates with an annular channel formed between the inner cylinder and the outer cylinder.
  • a combustion gas flow path may be formed to form a porous stack in the combustion gas flow path.
  • the stack described above can be provided, and by providing such a stack, a dream pipe effect accompanied by heat transport is exhibited, and the temperature at the chimney outlet is significantly reduced. Even if the exhaust gas outlet is located as low as possible near the surface of the ground, there is no risk of adverse effects from soot and high-gas.
  • the chimney structure of the present embodiment has a characteristic double structure of the inner cylinder and the outer cylinder, so that the noise generated due to the above-described dream pipe effect is reduced by the tubular flow path of the inner cylinder, The noise generated from the annular flow path formed between the inner cylinder and the outer cylinder interferes with each other, and the frequencies are offset, so that noise can be greatly reduced and the surrounding environment can be disturbed. Absent.
  • FIG. 1 is a schematic explanatory view showing a chimney structure according to the first embodiment.
  • reference numeral 1 denotes a combustion chamber of a refuse incinerator, which includes a first combustion chamber 11 as an incinerator for directly charging a substance to be burned, a second combustion chamber 12, which performs the most combustion in two stages, and a third combustion chamber.
  • the combustion chamber is divided into chambers 13, and the combustion temperature is controlled in each of the combustion chambers 11, 12, 13, so that generation of harmful substances is suppressed as much as possible.
  • reference numeral 14 denotes a burner device provided in each of the combustion chambers 11, 12, and 13, and reference numeral 15 denotes a communication path connecting the first combustion chamber 11 and the second combustion chamber 12.
  • Reference numeral 3 denotes a chimney which is a main part of the present invention.
  • the stack 30 has a base 30a communicating with the combustion chamber 1 and a discharge gas slot 30b provided at the end to form a combustion gas flow path R, and a porous stack is provided therein.
  • the feature is that 4 are arranged.
  • the base end 30a of the pipe 30 is connected to the third combustion chamber 13 so as to extend directly upward, and the outlet 30b is positioned at a height h from the parner device 14 of the third combustion chamber 13. .
  • a plurality of porous stacks 4 are arranged inside the pipe 30 at appropriate intervals, and the combustion gas discharged from the combustion chamber 1 is passed through the pipe 30 through the stack 4. I have.
  • the stack 4 is made of porous ceramics used as an exhaust gas treatment catalyst in an exhaust pipe of an automobile and molded into a shape that can be disposed inside the chimney 3.
  • the number and position of the stacks 4 may be determined by experimentally finding the optimum number and the optimum position.In the present embodiment, three stacks 4 are connected to the third combustion chamber 13. It is arranged at a distance of h / 4 from the banner device 14.
  • the above-mentioned chimney structure can be used for both large refuse incinerators and small incinerators that can be used in schools and homes.
  • a chimney suitable for reduced environmental protection can be provided.
  • FIG. 2 is a schematic explanatory view showing a chimney structure according to the second embodiment.
  • 1 is a combustion chamber of a refuse incinerator, to which a desulfurization unit 2 is attached.
  • the combustion chamber 1 according to the present embodiment is configured to be capable of burning at a high temperature of about 125 ° C. to about 150 ° C. in order to suppress the generation of dyes.
  • a sub-combustion chamber may be provided to suppress combustion at around 800 ° C in combustion chamber 1 and burn at high temperature in the sub-combustion chamber to convert incinerated ash and fly ash into molten slag. .
  • the feature of the present embodiment is that the pipe 30 of the chimney 3 is extended upward and is bent in the middle in a substantially inverted U-shape to form a substantially inverted U-shaped pipe. That is, the porous stack 4 described above is disposed in the middle of the first vertical portion 31 and the second vertical portion 32 of the device 30, respectively.
  • the exhaust gas port 30b which is located at a height close to the ground, is connected to an exhaust gas treatment It communicates with the steps.
  • 31 is a first vertical portion
  • 32 is a second vertical portion
  • .33 is a bent portion.
  • the height of the inverted U-shaped portion of the chimney 3 is about 15 m.
  • the arrangement position of each stack 4 may be determined by experimentally finding the optimum position.
  • the height position H of the stack 4 arranged in the first vertical portion 31 is determined based on the height position H.
  • Position 3 to 8 m from the position of end 3 Oa, Arrangement position D of stack 4 to be arranged in second vertical portion 32 is set to 3 to 8 m from the upper end of bent portion 33 .
  • a filter 5 for removing dust and ash is provided on the lower side of the stack 4.
  • the location of the filter 5 and the number of the filters 5 may be determined as appropriate, and are not particularly limited to the present embodiment.
  • the combustion gas discharged from the combustion chamber 1 passes through the inverted U-shaped pipe 30 while passing through the stack 4 and the filter 5, and the dream pipe formed by the stack 4 Due to the effect, the temperature is reduced to nearly the normal temperature.
  • the exhaust gas concentration at the entrance of the exhaust gas treatment means is lowered, it is possible to prevent the secondary production of daisy toxin and the like in the exhaust gas treatment means.
  • the stack 4 and the filter 5 allow the exhaust gas subjected to the primary treatment from which soot and dust has been removed to flow into the exhaust gas processing means, thereby reducing the processing load of the exhaust gas processing means.
  • the primary treatment effect of the exhaust gas can be further enhanced.
  • Exhaust gas treatment means other removal of harmful substances die old Xing, in particular, for the purpose of carbon dioxide that causes global warming (C 0 2) is prevented from being discharged into the atmosphere
  • the gas generating unit 6 functions as a gas generating unit 6 that generates a methane gas by inducing a reduction reaction of carbon dioxide with water using a photocatalyst.
  • a photocatalyst 63 in which palladium is supported on the surface of titanium oxide is dispersed in the water tank 61.
  • 62a is a methane gas outlet.
  • the photocatalyst 63 is a solid-state photocatalyst capable of accumulating multiple electrons
  • water can be used as a reducing agent as shown in the following formula, and carbon dioxide can be efficiently reduced to improve the menthol gas generation efficiency. Can be done.
  • the following shows the reaction formula for producing methane gas by reduction of carbon dioxide.
  • the generated methane gas can be effectively used as power generation and heating energy.
  • a large amount of carbon dioxide is not emitted into the atmosphere, which can greatly contribute to the prevention of global warming, and the carbon dioxide generated by combustion is converted into methane gas.
  • energy can be effectively used as an external energy source such as a power source or a heat source, and energy can be saved.
  • FIG. 3 shows a modified example of the exhaust gas treatment means for obtaining methane gas from the generated carbon dioxide.
  • V1 is a drain drain.
  • reaction tank T2 Fe, Ru, Ni -Al 2 0 3, Si and the like as a catalyst, methane gas is generated by the following reaction.
  • the temperature and pressure in the reaction tank T2 are appropriately set depending on the catalyst used.
  • Reference numeral 66 denotes a reducing agent tank that accommodates urea water as a reducing agent and allows the urea water to be sprayed into the exhaust gas treatment flow path S via a relevance 66v, and is disposed on the upstream side of the catalyst chamber 65.
  • Reference numeral 67 denotes a nitrogen separation tank connected to and connected to the liquefaction tank T1.
  • 67V is a liquid nitrogen discharge valve
  • 68 is a hydrogen generation unit which is connected to the reaction tank T2 via a valve V2.
  • water is electrolyzed or hydrogen is obtained by a reaction between water and a metal.
  • the flow path on the lower side of the catalyst chamber 65 and the liquefaction tank T1 maintain the temperature at 31 ° C. or less and the pressure at 72.8 atm.
  • a blower for forcibly drawing the exhaust gas from the chimney 3 into the exhaust gas treatment channel S is provided at a connection portion between the chimney 3 and the exhaust gas treatment channel S.
  • the exhaust gas treatment unit is obtained by enabling recovery of carbon dioxide contained in the exhaust gas as calcium carbonate (C a C 0 3) .
  • the exhaust gas treatment means in the present embodiment is a carbon dioxide recovery tank 7 containing a treatment liquid 70 in which hydroxylic acid (slaked lime) is dissolved, and the carbon dioxide contained in the exhaust gas.
  • hydroxylic acid soda lime
  • Calcium carbonate plays a role as a store of carbon dioxide on the earth, and naturally exists as calcite in a stable form.
  • the carbon dioxide generated by the combustion can be recovered in a stable state without being discharged to the atmosphere.
  • the inside of the carbon dioxide recovery tank 7 is maintained at a negative pressure, so that the exhaust gas from the combustion chamber 1 passing through the inverted U-shaped pipe 30 can be effectively drawn in without a blower device or the like. it can.
  • P is a vacuum pump provided to make the inside of the carbon dioxide capture tank 7 a negative pressure, and is provided in the middle of an exhaust pipe 71 extending from the ceiling wall of the carbon dioxide capture tank 7.
  • Reference numeral 72 denotes a calcium carbonate outlet formed on the bottom wall of the carbon dioxide recovery tank 7, and reference numeral 73 denotes an open / close valve connected to the outlet 72.
  • a plurality of such carbon dioxide collecting tanks 7 can be provided in series according to the amount of treatment. In this case, the end of the exhaust pipe 71 may be extended, and inserted deep into the second tank 7 'for connection.
  • a die-cut xin treatment chamber 8 using supercritical water there may be provided a die-cut xin treatment chamber 8 using supercritical water.
  • Supercritical water is obtained by applying a certain pressure to water and applying a certain temperature to the boundary between the liquid and the gas. It is known to decompose and detoxify.
  • the chimney structure according to the third embodiment is as described above.
  • a large amount of carbon dioxide is not emitted into the atmosphere, which is great for preventing global warming.
  • FIG. 5 shows a modification of the exhaust gas treatment means in the third embodiment.
  • the pipe 30 is made upright as a single body, and in the second and third embodiments, the inverted U-shaped pipe 30 is formed into an upright shape having a double cylindrical structure. It is composed.
  • the configuration of the exhaust gas treatment means connected to the chimney 3 may be any of those shown in the second and third embodiments described above, and may be the configuration described later. Others may be adopted.
  • the combustion chamber 1 in the present embodiment includes a first combustion chamber 11 as an incinerator for directly injecting a substance to be burned, and a second combustion chamber for performing the most combustion in two stages thereafter. 12 and the third combustion chamber 13.
  • the chimney 3 in this embodiment connected to the combustion chamber 1 described above communicates with the combustion chamber 1 through a base end 35b of an inner cylindrical body 35 having an open upper end 35a, and includes the inner cylindrical body 35.
  • An outer cylinder 36 having an upper end closed and an exhaust gas port 36a formed in the middle of the cylinder is disposed, and the inner cylinder 35 and the outer cylinder 36 are formed from the tubular flow path R1 inside the inner cylinder 35.
  • the combustion gas flow path R is formed by communicating with the annular flow path R2 formed therebetween, and the porous stack 4 is disposed in the combustion gas flow path R.
  • an exhaust gas port 36a formed in the outer cylindrical body 36 is connected to the exhaust gas processing means as described in the first and second embodiments.
  • 36b is the closed upper end of the outer cylinder 36.
  • Reference numeral 5 denotes a filter disposed on the lower side of the stack 4.
  • the shape of the stack 4 and the filter 5 is formed into a cylindrical shape or a donut shape, respectively, according to the shape of the tubular flow path R1 or the annular shape R2.
  • the arrangement of the stack 4 in the combustion gas flow path R produces a dream pipe effect accompanied by heat transport, and the smoke outlet temperature, that is, the outer cylindrical body
  • the smoke outlet temperature that is, the outer cylindrical body
  • the temperature downstream from the 36 exhaust gas ports 36a can be greatly reduced, and even if the exhaust gas ports 36a are located as low as possible near the surface of the earth, there is no danger of adverse effects due to soot and high-temperature gas.
  • the stack 4 is disposed as a double-structured upright type comprising the inner cylinder 35 and the outer cylinder 36 without bending the chimney 3 as in the first and second embodiments, and combustion is performed.
  • the height of the chimney 3 can be reduced by almost half with respect to the length of the flow path R while securing the length of the combustion gas flow path R necessary for lowering the temperature of the gas.
  • the chimney 3 has a characteristic double pipe structure of the inner cylinder 35 and the outer cylinder 36, thereby providing a calming effect.
  • the double pipe structure causes the sounds generated from the tubular flow path and the annular flow path to interfere with each other, canceling out the frequencies, and greatly reducing the noise. That can be reduced. Therefore, with the chimney structure according to the present embodiment, there is no risk of disturbing the environment around the installation.
  • the number of the stacks 4 to be arranged and their intervals and arrangement positions can be appropriately set from the length of the combustion gas flow path R.
  • the height position of the exhaust gas port 36a communicating with the exhaust gas treatment means can be set freely. Therefore, even when constructing equipment that will be used as an exhaust gas treatment device after installing the chimney 3, it is necessary to provide the exhaust gas port 36a at the optimum position in consideration of the installation conditions of the equipment and the installation conditions of the combustion chamber 1. It becomes possible.
  • the chimney structure in this embodiment can reduce the height of the chimney 3 and can be installed in a small space, thereby reducing construction costs and quieting expected noise.
  • the exhaust gas treatment means shown in FIGS. 7 and 8 can generate methanol from carbon dioxide in exhaust gas.
  • the one shown in FIG. 7 basically has the configuration shown in FIG. During, V 2 0 with 6 -Ti 0 2 provided catalyst chamber 65 where the cracking catalyst accommodated in the NOx such as, downstream thereof, to vaporize the liquefied tank ⁇ for liquefying separation of carbon dioxide and nitrogen, carbon dioxide A reaction tank T2 for reacting hydrogen with hydrogen and a methanol tank T4 for containing methanol generated by the reaction between carbon dioxide and hydrogen are arranged in series. V3 is a methanol extraction valve.
  • methane gas is generated in the reaction tank T2 by the following reaction.
  • the one shown in FIG. 8 further separates carbon dioxide generated by the configuration shown in FIG. 7 into carbon monoxide and water, and reacts the obtained carbon monoxide with hydrogen to produce methanol. I'm trying to get.
  • T5 is a carbon monoxide tank, which is connected to the hydrogen generator 68 via a valve V2 '.
  • FIG. 9 shows a configuration in which pure exhaust gas is obtained by means of an exhaust gas treatment means, and is basically configured as shown in FIG. B is a blower that forcibly draws exhaust gas from chimney 3 into exhaust gas treatment channel S.
  • the exhaust gas treatment flow path S which communicatively connected to the chimney 3, V 2 0 5 - together with Ti 0 2 provided catalyst chamber 65 where the cracking catalyst accommodated in the NOx such as, downstream thereof, carbon dioxide and nitrogen
  • a liquefaction tank T1 for liquefaction and separation of carbon dioxide, a reaction tank T2 for vaporizing carbon dioxide and reacting with hydrogen, and a carbon tank T6 for containing carbon generated by the reaction between carbon dioxide and hydrogen are arranged in series. ing.
  • the chimney 3 has a double pipe structure composed of an inner cylindrical body 35 and an outer cylindrical body 36 as in the fourth embodiment, and the stack 4 is used as a stack cooling means for forcing; ; Rejection circuit F is provided.
  • the cooling circuit F includes a cooling tank F1 having a pump for storing cooling water and being capable of forcibly circulating, and a piping portion F2 forming a circulation flow path.
  • a member having a high thermal conductivity In this embodiment, a copper pipe is used.
  • a high heat conductivity material such as a copper plate can be interposed between the contact portion F2 'and the stack 4.
  • the cooling tank F1 is provided outside the chimney 3, but in order to improve the external appearance, the cooling tank F1 is configured to be sufficiently insulated, and the inner cylinder 35 and the outer cylinder It may be arranged between the body 36, that is, inside the chimney 3.
  • exhaust gas treatment means and the like do not necessarily need to be installed, and the configuration is not necessarily limited to the above embodiments. Absent.
  • cooling circuit F that forcibly rejects the stack 4 described above can also be applied to the above-described first to fourth embodiments.
  • the present invention is implemented in the form as described above, and has the following effects.
  • the porous stack is disposed in a pipe in which the base end communicates with the combustion chamber, the exhaust gas port is provided at the front end, and the combustion gas flow path is formed.
  • a dream pipe effect accompanied by heat transport can be achieved, the chimney exit angle can be greatly reduced, and secondary production of daisy toxin can be prevented. But Therefore, it can be suitably used for small incinerators, etc., and even for large incinerators, the height of the chimney to be constructed can be reduced and the construction cost can be reduced.o
  • the pipe body is bent in an inverted U-shape, and a porous stack is disposed in a combustion gas flow path formed in the pipe body, so that the stack
  • the construction cost can be reduced by lowering the construction cost, and even if the exhaust gas outlet is close to the surface of the ground, the stack arrangement also produces a dream pipe effect that involves heat transport. Can be significantly reduced, and there is no risk of adverse effects due to smoke and hot gases.
  • the base end of the inner cylindrical body having an open upper end is communicated with the combustion chamber, and the upper end is closed so that the inner cylindrical body is included.
  • An outer cylinder forming an exhaust gas port is provided, and a combustion gas flow is formed by communicating a tubular channel inside the inner cylinder with an annular channel formed between the inner cylinder and the outer cylinder.
  • the exhaust gas from the combustion chamber can be more efficiently guided to the exhaust gas treatment means.
  • the exhaust gas treatment means is a gas generating unit that generates a methane gas by causing a reduction reaction of carbon dioxide with water using a photocatalyst, thereby reducing By replacing this with methane gas without emitting carbon dioxide to the outside, it can be effectively used as an external energy source such as a power source or heat source.
  • the gas generating unit includes a combustion gas storage chamber, a water tank communicating with the combustion gas storage chamber, and a methane gas purification chamber communicating with the water tank.
  • the exhaust gas treatment means is a carbon dioxide recovery tank containing a treatment liquid in which calcium hydroxide is dissolved, and the carbon dioxide contained in the combustion gas is calcium carbonate.
  • the exhaust gas treatment means separates the exhausted gas into nitrogen and carbon dioxide via a NOx decomposition catalyst, and separates the separated carbon dioxide and hydrogen
  • the hydrogen generated from the device instead of emitting carbon dioxide to the atmosphere, it can be replaced with methanol to provide energy to external sources such as power sources and heat sources. Can be used effectively as a source
  • the exhaust gas treatment means separates the exhausted gas into nitrogen and carbon dioxide via a NOx decomposition catalyst, and separates the separated carbon dioxide and water.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chimneys And Flues (AREA)

Abstract

Cette invention a trait à une structure de pile à même d'empêcher que du dioxyde de carbone responsable du réchauffement planétaire ne s'échappe dans l'atmosphère. Une pile poreuse est placée dans un corps de tuyau dont une base est en communication avec une chambre de combustion dont une extrémité comporte un orifice d'évacuation. Cette chambre de combustion comporte un trajet de cheminement des gaz de combustion. Le corps de tuyau peut également être cintré et avoir la forme d'un U inversé, la pile poreuse étant placée dans le trajet de cheminement des gaz de combustion.
PCT/JP2000/008146 1999-11-19 2000-11-17 Structure de pile WO2001038788A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP11/330600 1999-11-19
JP33060099 1999-11-19
JP2000079042 2000-03-21
JP2000-79042 2000-03-21
JP2000203546 2000-07-05
JP2000-203546 2000-07-05

Publications (1)

Publication Number Publication Date
WO2001038788A1 true WO2001038788A1 (fr) 2001-05-31

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PCT/JP2000/008146 WO2001038788A1 (fr) 1999-11-19 2000-11-17 Structure de pile

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CN (1) CN1391642A (fr)
WO (1) WO2001038788A1 (fr)

Cited By (1)

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WO2021171731A1 (fr) * 2020-02-28 2021-09-02 荏原環境プラント株式会社 Dispositif et procédé de traitement de matériau d'alimentation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9266051B2 (en) 2005-07-28 2016-02-23 Carbon Sink, Inc. Removal of carbon dioxide from air
CA2644676C (fr) 2006-03-08 2015-02-10 Global Research Technologies, Llc Collecteur d'air avec membrane a echange d'ions fonctionnalisee pour capturer le co2 ambiant
US7708806B2 (en) 2006-10-02 2010-05-04 Global Research Technologies, Llc Method and apparatus for extracting carbon dioxide from air
AU2008242845B2 (en) 2007-04-17 2012-08-23 Carbon Sink, Inc. Capture of carbon dioxide (CO2) from air
CA2715874C (fr) 2008-02-19 2019-06-25 Global Research Technologies, Llc Extraction et sequestration de dioxyde de carbone
CN102233233A (zh) * 2010-09-12 2011-11-09 任安煜 废气定向锁定下排放烟囱顶端帽罩回收废气转换系统环保装置核心技术
WO2019161114A1 (fr) 2018-02-16 2019-08-22 Carbon Sink, Inc. Extracteurs à lit fluidisé pour la capture de co2 à partir d'air ambiant
CN108295574A (zh) * 2018-03-13 2018-07-20 刘仲明 捕获co2发电

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JPH0463115A (ja) * 1990-06-28 1992-02-28 Hitachi Ltd 炭酸ガスの光還元電極および還元装置
JPH04346816A (ja) * 1991-05-21 1992-12-02 Mitsubishi Heavy Ind Ltd 排ガスの処理方法
JPH1137449A (ja) * 1997-07-14 1999-02-12 Kubota Corp 排ガス減温塔
JPH11193918A (ja) * 1997-12-29 1999-07-21 Tokyo Gas Co Ltd 未燃分吸着酸化手段を有する燃焼装置

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Publication number Priority date Publication date Assignee Title
JPH0463115A (ja) * 1990-06-28 1992-02-28 Hitachi Ltd 炭酸ガスの光還元電極および還元装置
JPH04346816A (ja) * 1991-05-21 1992-12-02 Mitsubishi Heavy Ind Ltd 排ガスの処理方法
JPH1137449A (ja) * 1997-07-14 1999-02-12 Kubota Corp 排ガス減温塔
JPH11193918A (ja) * 1997-12-29 1999-07-21 Tokyo Gas Co Ltd 未燃分吸着酸化手段を有する燃焼装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021171731A1 (fr) * 2020-02-28 2021-09-02 荏原環境プラント株式会社 Dispositif et procédé de traitement de matériau d'alimentation

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