CN104204671A - Exhaust gas treatment method, and exhaust gas treatment apparatus - Google Patents
Exhaust gas treatment method, and exhaust gas treatment apparatus Download PDFInfo
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- CN104204671A CN104204671A CN201380016611.9A CN201380016611A CN104204671A CN 104204671 A CN104204671 A CN 104204671A CN 201380016611 A CN201380016611 A CN 201380016611A CN 104204671 A CN104204671 A CN 104204671A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 105
- 239000000203 mixture Substances 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 130
- 238000002156 mixing Methods 0.000 claims description 28
- 239000002912 waste gas Substances 0.000 claims description 27
- 238000003672 processing method Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101100008048 Caenorhabditis elegans cut-4 gene Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical group CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
-
- 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
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- 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
-
- 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
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- 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
- B01F23/10—Mixing gases with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
- B01F25/423—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components
- B01F25/4231—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components using baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2115—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2211—Amount of delivered fluid during a period
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
Abstract
Provided are an exhaust gas treatment method by which organic components contained in exhaust gas can be efficiently removed while degradation of a catalyst is suppressed, and an exhaust gas treatment apparatus. The exhaust gas treatment apparatus is provided with: a heat-treatment chamber (1) that heats a gas to be treated; an air mixture unit (2) that mixes air into heat-treated gas heat-treated in the heat-treatment chamber (1); and a catalyst treatment chamber (3) for treating the air-mixed gas by contacting the gas with a catalyst. The exhaust gas treatment apparatus is also provided with a stirrer mechanism (23) for homogenizing the air-mixed gas by stirring the air-mixed gas sent to the catalyst treatment chamber (3). The exhaust gas treatment apparatus is also provided with: a temperature detection means (22) that detects the temperature of the air-mixed gas prior to the catalyst treatment chamber (3); and a control valve (21) that controls the amount of air that is mixed into the heat-treated gas in the air mixture unit (2) in accordance with the temperature detected by the temperature detection means (22).
Description
Technical field
The present invention relates to waste gas processing method and emission-control equipment, more specifically, relate to waste gas processing method and emission-control equipment for the treatment of the waste gas that comprises the organic principle that should remove, this organic principle is that multilayered ceramic body stacked to the ceramic component such as ceramic raw material moulding is obtained, ceramic green sheet etc. and that form is heat-treated and carries out producing in the operations such as debinding agent.
Background technology
For example, in the manufacturing process of ceramic electronic component etc., when and the multilayered ceramic body that form etc. stacked to the ceramic component such as ceramic raw material moulding is obtained, ceramic green sheet etc. burns till, organic substance incomplete decomposing or the burnings such as adhesive that in ceramic mouldings, multilayered ceramic body, comprise, thereby it is (following to produce decomposition gas, burning gases etc., referred to as " organic principle "), and then produce the waste gas that comprises this organic principle.And this waste gas is harmful, or there is stench, therefore, conventionally need to carry out appropriate processing.
Treating apparatus as the waste gas for the treatment of comprising this odor pollutant, proposition has catalyst-type emission-control equipment 101 (with reference to patent documentation 1) as shown in figure 11, in the thermal treatment zone (Z1), untreated exhaust gas (processed gas) is heated to set point of temperature, make it by possessing the reaction zone (Z2) of catalyst 104, thereby the harmful rotten composition under the existence of catalyst 104, processed gas being comprised carries out oxidizing fire or purified treatment is carried out in thermal decomposition.
And, in this catalyst-type emission-control equipment 101, hydrocarbon concentration while utilizing 105 pairs of gas sensors that processed waste gas (processing gas) is discharged to outside detects, when its concentration is during lower than predefined purification benchmark concentration, in being no more than the scope that purifies benchmark concentration, make the caloric value of heater (burner) 103 reduce, when its concentration is when purifying benchmark concentration, the caloric value of burner 103 is increased until become below benchmark purified concentrations, thereby the minimum temperature that purifies benchmark concentration to meet is carried out purified treatment, alleviate the temperature load of catalyst.
Yet, in this emission-control equipment, there are the following problems: the parameter that the caloric value of control heater is controlled gas temperature is the organic gas concentration (hydrocarbon concentration) determining in the downstream of catalyst, therefore, if there is no certain organic gas (hydrocarbon) in the waste gas after catalyst treatment, cannot obtain for controlling the information of the caloric value of heater.
In addition,, in this emission-control equipment, utilize the organic gas concentration in the waste gas after catalyst treatment, control the caloric value of heater, therefore, the EGT during by catalyst reaches the temperature of destroying catalyst sometimes, may cause the deteriorated of catalyst.
Prior art document
Patent documentation
Patent documentation 1: Japanese patent laid-open 10-267248 communique
Summary of the invention
Invent technical problem to be solved
The present invention is used for addressing the above problem, and its object is to provide and suppresses the deteriorated of catalyst, and can efficiently remove waste gas processing method and the emission-control equipment of the organic principle comprising in waste gas.
The technical scheme that technical solution problem adopts
In order to address the above problem, waste gas processing method of the present invention is characterised in that, comprising:
Heating treatment step, in this heating treatment step, the processed gas that the state to contain the organic principle of answering resolution process is sent from the preceding working procedure of stipulating heats;
Air mixed processes, in this air mixed processes, is mixed in the heat treated gas after heat treated by air, and the temperature of air gas mixture is become below set point of temperature; And
Catalyst treatment operation in this catalyst treatment operation, is processed described air gas mixture in internal configurations has the catalyst treatment chamber of catalyst.
In addition, in waste gas processing method of the present invention, preferably include agitating procedure, in this agitating procedure, described air gas mixture is stirred, make described air gas mixture even.
By above-mentioned agitating procedure is set, can reduce reliably the deviation of catalyst treatment operation to the load of catalyst, can make the present invention more effective.
In addition, preferably be configured to, front in described catalyst treatment chamber is detected the temperature of described air gas mixture, according to the temperature of detected described air gas mixture, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, controls.
In the situation that possessing said structure, the temperature that is provided to the air gas mixture in catalyst treatment operation can be controlled to the temperature that the load of catalyst is not increased, can make the present invention more effective.
In addition, preferably be configured to, than the stirring region of described air Mixture, more leaning on downstream part, temperature to described air gas mixture detects, according to the temperature of detected described air gas mixture, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, control.
In the situation that possessing said structure, the temperature that the state with stirring homogenising can be provided to the air gas mixture in catalyst treatment operation is controlled to the temperature that the load of catalyst is not increased reliably, can make the present invention more effective.
In addition, emission-control equipment of the present invention is characterised in that and comprises:
Heat treatment chamber, in Gai heat treatment chamber, the processed gas that the state to contain the organic principle of answering resolution process is sent from the preceding working procedure of stipulating heats;
Air mixing portion, in this air mixing portion, is mixed in air the heat treated gas that has carried out heat treated in described heat treatment chamber, and the temperature of air gas mixture is become below set point of temperature; And
Catalyst treatment chamber, in this catalyst treatment chamber, contacts the air gas mixture of having mixed air in described air mixing portion to process with catalyst.
In addition, at emission-control equipment of the present invention, preferably include rabbling mechanism, this rabbling mechanism stirs described air gas mixture, makes described air gas mixture even.
By above-mentioned rabbling mechanism is set, can reduce reliably the deviation of catalyst treatment operation to the load of catalyst, can make the present invention more effective.
; waste gas in being sent to catalyst treatment operation (air gas mixture) is in the situation that temperature, oxygen concentration, answer the aspects such as concentration of the organic principle of resolution process to have deviation; the load locality of catalyst is increased, and its result can cause the deteriorated of catalyst.And, by extending the stream of air gas mixture, eliminate in the situation of the deviations such as temperature, oxygen concentration, organic principle concentration of this air gas mixture, can cause the maximization of device.
To this, be configured in the situation that possesses above-mentioned rabbling mechanism, can not cause device to maximize because extending the stream of air gas mixture, can make efficiently air gas mixture even.
Consequently, without device is maximized, just the deteriorated of catalyst can be suppressed, exhaust-gas treatment can be carried out efficiently.
In addition, emission-control equipment of the present invention preferably includes:
Temperature detecting unit, this temperature detecting unit detects the temperature of described air gas mixture in the front of described catalyst treatment chamber; And
Control valve, this control valve is according to by the detected temperature of described temperature detecting unit, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, controls.
In the situation that possessing said structure, the temperature that is provided to the air gas mixture in catalyst treatment chamber can be controlled to the temperature that the load of catalyst is not increased, can make the present invention more effective.
In addition, preferably include: temperature detecting unit, this temperature detecting unit detects the temperature of described air gas mixture in the downstream of described rabbling mechanism; And control valve, this control valve is according to by the detected temperature of described temperature detecting unit, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, controls.
In the situation that possessing said structure, the temperature that the state with stirring homogenising can be provided to the air gas mixture in catalyst treatment chamber is controlled to the temperature that the load of catalyst is not increased reliably, can make the present invention more effective.
Invention effect
As mentioned above, waste gas processing method of the present invention comprises: the heating treatment step of processed gas being carried out to heat treated; Air is mixed in to the air mixed processes of heat treated gas; And the catalyst treatment operation of air gas mixture being carried out to catalyst treatment, therefore, can suppress the deteriorated of catalyst in catalyst treatment operation, and can efficiently remove the organic principle that waste gas comprises.
In addition, as mentioned above, emission-control equipment of the present invention comprises: the heat treatment chamber that processed gas is carried out to heat treated; Air is mixed in to the air mixing portion of heat treated gas; And catalyst treatment chamber, the inside of this catalyst treatment chamber is equipped with catalyst and in this catalyst treatment chamber, air gas mixture is processed, therefore, can suppress the deteriorated of catalyst in catalyst treatment operation, and can efficiently remove the organic principle that waste gas comprises.
In addition, according to the present invention, in the situation that answer the organic principle concentration of resolution process higher and while directly carrying out catalyst treatment the load of catalyst likely larger, also can be in heat treated (single treatment) operation, the conditions such as heating-up temperature are adjusted, thereby regulate the degree of decomposition of organic principle, and air is mixed in the heat treated gas after heat treated, thereby it is excessive that the load of can be reliably and suitably controlling catalyst can not be increased to the load of the catalyst in catalyst treatment (after-treatment) operation, can the extending catalyst life-span.
Accompanying drawing explanation
Fig. 1 is the figure that schematically shows the structure of the related emission-control equipment of one embodiment of the present invention.
Fig. 2 has carried out the curve map of movement in the situation of gas treatment, that catalyst performance reduces with the related emission-control equipment of one embodiment of the present invention.
Fig. 3 schematically shows that other embodiment of the present invention is related, the figure of the structure of the emission-control equipment that possesses rabbling mechanism.
The figure of the structure of the rabbling mechanism that Fig. 4 means is that the emission-control equipment of Fig. 3 is used, a side member and opposite side member are combined, (a) is the top view of rabbling mechanism, is (b) upward view of rabbling mechanism.
Fig. 5 means the stereogram of the rabbling mechanism that the emission-control equipment of Fig. 3 is used.
Fig. 6 means the figure of position in gas flow path, that temperature and oxygen concentration are measured.
Fig. 7 means the figure of the temperature deviation state when possessing and not possessing rabbling mechanism.
Fig. 8 means the figure of the oxygen concentration deviation state when possessing and not possessing rabbling mechanism.
Fig. 9 means the figure of the structure of emission-control equipment rabbling mechanism, that other embodiment of the present invention is related that possesses different structure.
Figure 10 means the figure of the structure of emission-control equipment rabbling mechanism, that another other embodiment of the present invention is related that possesses different structure.
Figure 11 means the figure of the structure of existing catalyst-type emission-control equipment.
The specific embodiment
Hereinafter show embodiments of the present invention, so that feature of the present invention is described in detail.
[embodiment 1]
Fig. 1 is the figure that schematically shows the structure of the related emission-control equipment of one embodiment of the present invention.
In embodiment 1, the following emission-control equipment of take describes as example, this emission-control equipment is processed for should process the waste gas of organic principle to comprising, this waste gas produces when multilayered ceramic body being heat-treated in the manufacturing process of laminated ceramic capacitor and carrying out debinding agent, and wherein this multilayered ceramic body forms by laminated ceramic raw cook.
As shown in Figure 1, the emission-control equipment A1 of this embodiment 1 comprises: heat treatment chamber 1, and the processed gas that 1 pair of this heat treatment chamber comprises the organic principle of answering resolution process being caused by adhesive heats to carry out heat treated (single treatment); Air mixing portion 2, this air mixing portion 2 is mixed in air the heat treated gas that has carried out heat treated in heat treatment chamber 1; And catalyst treatment chamber 3, this catalyst treatment chamber 3 contacts the air gas mixture of having mixed air in air mixing portion 2 with catalyst, be further processed (after-treatment).
Above-mentioned heat treatment chamber 1 is heated to waste gas the mechanism of uniform temperature, and its concrete structure is not particularly limited.In addition, the heating-up temperature in heat treatment chamber 1 according to will organic principle being decomposed into which kind of degree in heating treatment step changes.In addition, be preferably, the heating-up temperature in heat treatment chamber 1 is conventionally at 500～650 ℃.
In addition, air is mixed in to the air mixing portion 2 that has carried out the heat treated gas after heat treated in heat treatment chamber 1 and heat treated gas and air is mixed to the region of (heat treated gas is diluted), comprise control valve 21, for the import volume of the air to heat treated mixed gases, control.
In addition, in air mixing portion 2, mixed position gas flow path 5,3 fronts, catalyst treatment chamber that the air gas mixture after air is passed through, configuration temperature detecting unit 22,22 pairs of temperature that are sent to the air gas mixture of catalyst treatment chamber 3 of this temperature detecting unit detect.
In addition, this embodiment 1 is configured to, and utilizes the temperature of the detected air gas mixture of the temperature detecting unit 22 of the position be disposed at 2 fronts, catalyst treatment chamber, and the aperture of control valve 21 is adjusted.Thus, the temperature that offers the air gas mixture of catalyst treatment chamber 3 can be controlled as following temperature, the temperature that the load causing for catalyst can be not excessive.
In addition, the inside in catalyst treatment chamber 3, has taken in following catalyst as catalyst,, carries the catalyst of noble metal catalyst on the carrier of pottery manufacture that is.In addition, in this embodiment, the carrier of manufacturing as pottery, is used honeycomb.Yet carrier structure is not limited to this.
Catalyst treatment chamber 3 is undertaken heat insulation by heat-barrier material and outside, but heating unit can be set especially.Yet, from improving the aspect of the temperature controlled free degree, can be also the structure that possesses heating unit.
In addition, the emission-control equipment A1 of this embodiment 1 is configured to, and make to contact with the catalyst of 3 inside, catalyst treatment chamber by the air gas mixture of catalyst treatment chamber 3, thereby the organic principle that should remove is almost all decomposed and removes.
Use has the emission-control equipment A1 of said structure, and the waste gas producing in the manufacturing process of laminated ceramic capacitor, when multilayered ceramic body is heat-treated to slough adhesive is processed.
In addition, in exhaust-gas treatment, the internal temperature of heat treatment chamber 1 is maintained to 500～650 ℃, temperature is adjusted into the degree that can decompose the organic principle in heat treated (single treatment).
In addition, about the air import volume of air mixing portion 2, to the aperture adjustment of control valve 21, make the detected detected temperatures of temperature detecting unit 22 reach 350～450 ℃ and import air.
Then, proceed exhaust-gas treatment, the movement of catalyst performance (deterioration state) is investigated.
The curve map of Fig. 2 illustrate the exhaust-gas treatment time (during) and the deteriorated prediction of catalyst performance and the relation between measured value.In addition, as the movement that catalyst performance is reduced, give prominence to the appreciation condition presenting, to implement exhaust-gas treatment with the excess space speed of approximately 3 times of the common space velocity ratio of catalyst volume (gas flow that passed through of each unit interval with), the catalyst performance shown in the longitudinal axis of the curve map of Fig. 2 is equivalent to the amount of each organic principle constantly, that each unit interval decomposes under this situation.
Afterwards, moment of 50% regulation that catalyst performance value is reached to initial value is catalyst life, now, based on actual measurement the catalyst life that obtains by prediction, is about 42 months.This catalyst life of 42 months, for the catalyst life of noble metal bearing type, is the life-span of growing.
[embodiment 2]
Fig. 3 means the figure of the emission-control equipment A2 that other embodiment of the present invention is related.
The emission-control equipment A2 of present embodiment 2 possesses rabbling mechanism 23 near the outlet of air mixing portion 2, and the air gas mixture that 23 pairs of this rabbling mechanisms have carried out air mixing in air mixing portion 2 stirs, for making air gas mixture even.Other structure is identical with the emission-control equipment A1 of above-mentioned embodiment 1.
In the emission-control equipment A2 of this embodiment 2, as rabbling mechanism 23, possess a side member 23a and opposite side member 23b are combined and the rabbling mechanism 23 of formation shown in Fig. 4 (a), (b) and Fig. 5.In addition, Fig. 4 (a) is the top view of rabbling mechanism 23, and Fig. 4 (b) is upward view.
In addition, a side member 23a who forms rabbling mechanism 23 is square tabular component, has 4 gases having implemented cutting perk (cutting) processing and formed and passes through the 24a of portion.Each gas comprises tilting to cut sheet 25a by the 24a of portion, by welding standing upright sheet 26a, the peristome 27a engaging.
And during from in-plane, 4 gas configures upwards separating equal intervals week by the 24a of portion.
In addition, opposite side member 23b is also square tabular component, possesses and implements to cut 4 24b of gas via-hole portion that processing forms.Each gas by the 24b of portion, comprise cut sheet 25b, by welding standing upright sheet 26b and the peristome 27b engaging.
During from in-plane, in this opposite side member 23b, 4 gases upwards also separate equal intervals by the 24b of portion in week and configure.Yet, the allocation position (plan-position) of 4 gases in opposite side member 23b by the 24b of portion with respect to the gas of a side member 23a by the 24a of portion, in the position skew upwards in week with 30 °.
Rabbling mechanism 23 performances of an above-mentioned side member 23a and opposite side member 23b being fitted in mode shown in Fig. 4 (a), (b) and Fig. 5 and forming are without the function of the static mixer of drive division, the function that possesses the 24a of the portion that passes through, the 24b performance guiding wing that cuts sheet 25a, 25b, standing upright sheet 26a, 26b and peristome 27a, 27b and form, when air gas mixture is passed through the 24a of portion, 24b, change angle to produce rotating flow, in the situation that the distance of gas flow path 5 is shorter, also can efficiently and reliably stir.; in the situation that possessing rabbling mechanism 23; even if the axial distance of gas flow path 5 is shorter, also can produce rotating flow; thereby efficiently air gas mixture is stirred, can be by temperature, oxygen concentration, should decompose the aspects such as organic principle concentration and do not have gas devious to offer catalyst treatment chamber 3.
With the situation of embodiment 1 similarly, utilize the emission-control equipment A2 that possesses rabbling mechanism as above to process the waste gas producing in the manufacturing process of laminated ceramic capacitor, when multilayered ceramic body is heat-treated to slough adhesive.
And, to the position of 3 fronts, catalyst treatment chamber of gas flow path 5, with the face of the flow direction quadrature of air gas mixture on regulation a plurality of positions, be that (1), (2), (3), (4) of Fig. 6, temperature and the oxygen concentration of each position of (5) are investigated, thereby the deviation state of temperature and oxygen concentration is observed.In order to evaluate, the gas (gas before mixing air) that passes through of heat treatment chamber 1 is all made as to nitrogen herein.In addition, in order to compare, for the emission-control equipment that does not possess rabbling mechanism, investigated temperature and the oxygen concentration of position air gas mixture.This result shown in Fig. 7 and Fig. 8.
As shown in Figures 7 and 8, confirmed following situation: compare with the emission-control equipment A1 that does not possess rabbling mechanism, when use possesses the emission-control equipment A2 of this embodiment 2 of rabbling mechanism 23, the temperature of air gas mixture and the deviation of oxygen concentration are greatly improved.
In addition, as the concrete structure of rabbling mechanism 23 that does not possess the static mixer performance function of drive division, being not particularly limited, as long as can improve the temperature of air gas mixture and the deviation of oxygen concentration, can be various structures.
Use in the situation of emission-control equipment A2 of this embodiment 2, can significantly alleviate the deviation to the load of catalyst, therefore, compare with the situation of embodiment 1, further the extending catalyst life-span.
[embodiment 3]
Fig. 9 (a) means the figure of structure of the major part of the emission-control equipment A3 that another other embodiment of the present invention (embodiment 3) is related, and Fig. 9 (b) means the figure of the pressed sheet using for the rabbling mechanism of the emission-control equipment of pie graph 9 (a).
In the emission-control equipment A3 of this embodiment 3, near the outlet of air mixing portion 2, also possess for stirring the rabbling mechanism 23 of air gas mixture.
And, as shown in Fig. 9 (b), 2 pressed sheet 33a, 33b being formed with a plurality of through hole 34a, 34b are separated to predetermined distance on the flow direction of air gas mixture and configure, thereby form rabbling mechanism 23.Other structure is identical with the situation of above-mentioned embodiment 2.
In addition, preferably pressed sheet 33a, 33b staggered positions are configured, through hole 34a, 34b can not faced each other mutually.In addition preferably size of aperture opening ratio, through hole etc. is adjusted, to guarantee certain pressure loss.
In addition, also 3 above pressed sheets can be combined to use, in this case, stirring efficiency is also improved, but the pressure loss increases, therefore, the ability of the fan that preferably consideration is blown to heat treated gas etc. decides the sheet number of used pressed sheet.
As the emission-control equipment A3 of this embodiment 3, possess in the situation of the rabbling mechanism 23 that 2 pressed sheet 33a, 33b are combined, also can stir efficiently air gas mixture, can not have air gas mixture devious to offer catalyst treatment chamber 3 aspects such as temperature, oxygen concentration, can carry out stable gas treatment.
Thereby, use in the situation of emission-control equipment A3 of this embodiment 3, also can alleviate the deviation to the load of catalyst, compare with the situation of embodiment 1, further the extending catalyst life-span.
[embodiment 4]
Figure 10 (a) means the figure of structure of the major part of the emission-control equipment A4 that another other embodiment of the present invention (embodiment 4) is related, and Figure 10 (b) means for forming the figure of the demarcation strip that the rabbling mechanism of the emission-control equipment of Figure 10 (a) uses.
In the emission-control equipment A4 of this embodiment 4, the rabbling mechanism 23 of Figure 10 (a) is formed by 2 demarcation strip 43a, 43b.At length, the mode that the peristome 44a forming in gas flow path 5 with 2 demarcation strip 43a, 43b, 44b are positioned at side opposite each other separates predetermined distance by 2 demarcation strip 43a, 43b and configures and form on the flow direction of air gas mixture.Other structure is identical with the situation of above-mentioned embodiment 2.
As this embodiment 4, possess in the situation of the rabbling mechanism 23 that demarcation strip 43a, 43b are combined, also can stir efficiently air gas mixture, can not have air gas mixture devious to offer catalyst treatment chamber 3 aspects such as temperature, oxygen concentration, can carry out stable gas treatment.
In addition, configuration sheet number for demarcation strip is not particularly limited, but configuration sheet number is more, stirring efficiency is also higher, but the pressure loss increases, therefore the ability that, is preferably as required, considers fan that heat treated gas is blown etc. decides the sheet number of the demarcation strip of use.
The method that consists of rabbling mechanism this demarcation strip is compared with the situation of above-mentioned embodiment 2 and 3, comparatively simple and easy, if the aspects such as temperature, oxygen concentration allow in the situation of certain deviation, can be used as cheap agitating unit and uses.
Use in the situation of emission-control equipment A4 of this embodiment 4, also can alleviate the deviation to the load of catalyst, compare with the situation of embodiment 1, can the extending catalyst life-span.
The invention is not restricted to the respective embodiments described above, in scope of the present invention, in year, the structure of the control valve of the structure of the concrete structure of Ke Dui heat treatment chamber, air mixing portion, catalyst treatment chamber, temperature detecting unit, rabbling mechanism and configuration mode, control air supply amount etc. is carried out various application, is applied distortion.
Label declaration
1 heat treatment chamber
2 air mixing portions
3 catalyst treatment chambers
5 gas flow paths
21 control valves
22 temperature detecting units
23 rabbling mechanisms
23a mono-side member
23b opposite side member
The gas of 24a mono-side member passes through portion
The gas of 24b opposite side member passes through portion
25a mono-side member cut sheet
25ba opposite side member cut sheet
The standing upright sheet of 26a mono-side member
The standing upright sheet of 26b opposite side member
33a, 33b pressed sheet
34a, 34b through hole
43a, 43b demarcation strip
44a, 44b peristome
A1, A2, A3, A4 emission-control equipment
Claims (8)
1. a waste gas processing method, is characterized in that, comprising:
Heating treatment step, in this heating treatment step, the processed gas that the state to contain the organic principle of answering resolution process is sent from the preceding working procedure of stipulating heats;
Air mixed processes, in this air mixed processes, is mixed in the heat treated gas after heat treated by air, and the temperature of air gas mixture is become below set point of temperature; And
Catalyst treatment operation in this catalyst treatment operation, is processed described air gas mixture in internal configurations has the catalyst treatment chamber of catalyst.
2. waste gas processing method as claimed in claim 1, is characterized in that, comprises agitating procedure,
In this agitating procedure, described air gas mixture is stirred, make described air gas mixture even.
3. waste gas processing method as claimed in claim 1 or 2, is characterized in that,
Front in described catalyst treatment chamber is detected the temperature of described air gas mixture, according to the temperature of detected described air gas mixture, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, controls.
4. waste gas processing method as claimed in claim 2, is characterized in that,
Than the stirring region of described air gas mixture, more leaning on downstream part, temperature to described air gas mixture detects, according to the temperature of detected described air gas mixture, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, control.
5. an emission-control equipment, is characterized in that, comprising:
Heat treatment chamber, in Gai heat treatment chamber, the processed gas that the state to contain the organic principle of answering resolution process is sent from the preceding working procedure of stipulating heats;
Air mixing portion, in this air mixing portion, is mixed in air the heat treated gas that has carried out heat treated in described heat treatment chamber, and the temperature of air gas mixture is become below set point of temperature; And
Catalyst treatment chamber, in this catalyst treatment chamber, contacts the air gas mixture of having mixed air in described air mixing portion to process with catalyst.
6. emission-control equipment as claimed in claim 5, is characterized in that, comprises rabbling mechanism,
This rabbling mechanism stirs described air gas mixture, makes described air gas mixture even.
7. the emission-control equipment as described in claim 5 or 6, is characterized in that, comprising:
Temperature detecting unit, this temperature detecting unit detects the temperature of described air gas mixture in the front of described catalyst treatment chamber; And
Control valve, this control valve is according to by the detected temperature of described temperature detecting unit, to be mixed in the amount of the air of described heat treated gas in described air mixing portion, controls.
8. emission-control equipment as claimed in claim 6, is characterized in that, comprising:
Temperature detecting unit, this temperature detecting unit detects the temperature of described air gas mixture in the downstream of described rabbling mechanism; And
Control valve, this control valve is according to by the detected temperature of described temperature detecting unit, to be mixed in the quantity delivered of the air of described heat treated gas in described air mixing portion, controls.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012077329 | 2012-03-29 | ||
| JP2012-077329 | 2012-03-29 | ||
| PCT/JP2013/052563 WO2013145867A1 (en) | 2012-03-29 | 2013-02-05 | Exhaust gas treatment method, and exhaust gas treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104204671A true CN104204671A (en) | 2014-12-10 |
Family
ID=49259152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380016611.9A Pending CN104204671A (en) | 2012-03-29 | 2013-02-05 | Exhaust gas treatment method, and exhaust gas treatment apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2013145867A1 (en) |
| KR (1) | KR20140126364A (en) |
| CN (1) | CN104204671A (en) |
| WO (1) | WO2013145867A1 (en) |
Cited By (6)
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| CN104689734A (en) * | 2015-01-12 | 2015-06-10 | 华中科技大学 | Gas mixing device for atmospheric environment temperature simulation experiment in high-altitude flight |
| CN105180180A (en) * | 2015-09-24 | 2015-12-23 | 北京建筑材料科学研究总院有限公司 | Combustion device and method for waste gas treatment |
| CN107366923A (en) * | 2017-09-11 | 2017-11-21 | 山东保蓝环保工程有限公司 | One kind catalysis burning bed and its catalytic combustion method |
| CN107504506A (en) * | 2017-07-11 | 2017-12-22 | 福州大学 | One kind catalysis burning purification technique and its device |
| TWI721547B (en) * | 2018-08-31 | 2021-03-11 | 日商三菱日立電力系統股份有限公司 | Exhaust purification device |
| CN115531963A (en) * | 2017-09-19 | 2022-12-30 | 株式会社村田制作所 | Filtering device and filtering method |
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| US20170335734A1 (en) * | 2016-05-19 | 2017-11-23 | General Electric Company | Tempering Air System For Gas Turbine Selective Catalyst Reduction System |
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Also Published As
| Publication number | Publication date |
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| JPWO2013145867A1 (en) | 2015-12-10 |
| KR20140126364A (en) | 2014-10-30 |
| WO2013145867A1 (en) | 2013-10-03 |
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Application publication date: 20141210 |