CN106979529B - Combustion treatment apparatus - Google Patents

Combustion treatment apparatus Download PDF

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Publication number
CN106979529B
CN106979529B CN201611093307.6A CN201611093307A CN106979529B CN 106979529 B CN106979529 B CN 106979529B CN 201611093307 A CN201611093307 A CN 201611093307A CN 106979529 B CN106979529 B CN 106979529B
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combustion
exhaust gas
heating portion
treatment
combustion heating
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CN201611093307.6A
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Chinese (zh)
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CN106979529A (en
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山本俊辅
川端健介
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Chugai Ro Co Ltd
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Chugai Ro Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/10—Nitrogen; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/10—Nitrogen; Compounds thereof
    • F23J2215/101—Nitrous oxide (N2O)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/40—Carbon monoxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/10—Catalytic reduction devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chimneys And Flues (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

A combustion treatment apparatus has a first combustion heating portion and a second combustion heating portion; the first combustion heating portion is provided with a first combustion device that performs combustion in a non-oxidized state in which an air ratio is less than 1; the second combustion heating portion is provided with a second combustion device that performs combustion in a state in which an air ratio is greater than 1; collecting the first combustion exhaust gas and the second combustion exhaust gas, and treating the first combustion exhaust gas and the second combustion exhaust gas in an exhaust gas treatment unit containing a three-way catalyst; the first combustion exhaust gas contains an unburned component generated in the first combustion heating portion by combustion in the first combustion device; the second combustion exhaust gas contains a NOx component generated in the second combustion heating portion by the combustion of the second combustion device.

Description

Combustion treatment apparatus
Technical Field
The present invention relates to a combustion processing apparatus. In particular, the present invention relates to a combustion treatment apparatus having a first combustion heating section and a second combustion heating section, which is characterized in that a first combustion exhaust gas and a second combustion exhaust gas can be efficiently treated to a safe state without damaging the environment and then discharged; the first combustion heating portion is combusted by the first combustion device in a non-oxidized state in which an air ratio (actual air amount/theoretical air amount) is less than 1; the second combustion heating portion is combusted by a second combustion device in a state where an air ratio is greater than 1; the first combustion exhaust gas contains an unburned component produced by the first combustion heating portion; the second combustion exhaust gas contains NOx components produced by the second combustion heating portion.
Background
Conventionally, as a combustion processing device, a device that performs combustion in a non-oxidation state in which an air ratio is less than 1 or a device that performs combustion in an oxidation state in which an air ratio is greater than 1 when fuel is combusted by a combustion apparatus has been used.
Here, in the above-described combustion processing facility, when combustion is performed in a non-oxidized state in which the air ratio is less than 1, the object to be processed is not oxidized and the generation of NOx can be suppressed, but there is a problem that unburned components such as CO and Hydrocarbons (HC) remain in the combustion exhaust gas. Further, in the case where combustion is performed in an oxidation state in which the air ratio is greater than 1, NOx is generated during combustion, and the amount of NOx in the combustion exhaust gas increases.
Therefore, in the case where the unburned components such as CO and hydrocarbons remain in the combustion exhaust gas as described above, conventionally, the combustion exhaust gas is usually combusted to oxidize the unburned components such as CO and hydrocarbons remaining in the combustion exhaust gas into CO2Or H2And O, forming the combustion waste gas into a safe state and then discharging the combustion waste gas.
In addition, when the amount of NOx contained in the combustion exhaust gas increases as described above, conventionally, for example, as shown in patent document 1, the following is proposed: after purifying a combustion exhaust gas containing a large amount of NOx generated by combustion in a radiant tube burner (Japanese: ラジアントチューブバーナー) by a nitrogen oxide reduction catalyst, air was added to the obtained NOx purified gas, and unburned components were removed by oxidation in an oxidation catalyst.
However, conventionally, in each combustion treatment facility, in order to treat and discharge combustion exhaust gas containing unburned components such as CO and hydrocarbons generated by residual combustion and combustion exhaust gas containing a large amount of NOx separately as described above, different treatment facilities are required for each combustion treatment facility, and there are problems that facility space and facility cost are increased and operating cost for treating combustion exhaust gas is also increased.
Conventionally, as shown in patent document 2, the following is proposed: in the radiant tube burners provided with the regenerative burners at both ends of the radiant tube, when each regenerative burner is burning, the flow of the combustion exhaust gas and the combustion air is controlled, and the air ratio of the combustion air to the fuel is also controlled, thereby reducing the amounts of CO and NOx in the combustion exhaust gas.
However, the proposal shown in patent document 2 is a proposal for reducing the amounts of CO and NOx in the combustion exhaust gas in one radiant tube burner, and even in the above case, it is difficult to sufficiently reduce the amounts of CO and NOx in the combustion exhaust gas, respectively. In particular, in recent years, there has been a demand for further reduction in the amount of NOx in the combustion exhaust gas, but in order to meet such a demand, there has been a problem that the amount of CO in the combustion exhaust gas increases.
Patent document
Patent document 1: japanese patent laid-open No. 2001-241619
Patent document 2: japanese patent laid-open No. 11-223316.
Disclosure of Invention
Technical problem to be solved by the invention
The subject of the invention is: the problem described above when a combustion exhaust gas containing an unburned component such as CO or hydrocarbons remaining in a combustion processing device that performs combustion in a non-oxidation state with an air ratio of less than 1 and a combustion exhaust gas containing a large amount of NOx in the combustion exhaust gas generated in a combustion processing device that performs combustion in an oxidation state with an air ratio of more than 1 are treated and discharged is solved.
That is, the present invention has as its object: that is, the combustion exhaust gas containing a large amount of NOx contained in the combustion exhaust gas and the combustion exhaust gas containing a large amount of unburned components such as CO and hydrocarbons can be treated in a collective and efficient manner to be safe without damaging the environment, and the combustion exhaust gas can be appropriately discharged.
Technical scheme for solving technical problem
In order to solve the above-described problems, the combustion treatment facility of the present invention includes a first combustion heating portion and a second combustion heating portion; the first combustion heating portion is subjected to combustion in a non-oxidized state with an air ratio of less than 1 by a first combustion device; the second combustion heating portion is combusted by a second combustion device in a state where an air ratio is greater than 1; introducing a first combustion exhaust gas and a second combustion exhaust gas together into an exhaust gas treatment unit housing a three-way catalyst, and treating the combustion exhaust gases in the exhaust gas treatment unit; the first combustion exhaust gas contains an unburned component generated in the first combustion heating portion by combustion in the first combustion device; the second combustion exhaust gas contains a NOx component generated in the second combustion heating portion by the combustion of the second combustion device.
In this way, when the first burned gas and the second burned gas are introduced into the exhaust gas treatment unit housing the three-way catalyst and treated together, the first burned gas and the second burned gas pass through the three-way catalystCO and hydrocarbons contained in the first combustion exhaust gas, which are unburned components, are oxidized into CO2、H2O; and the NOx component contained in the second combustion exhaust gas is reduced to N2(ii) a The first combustion exhaust gas contains an unburned component produced by the first combustion heating portion; the second combustion exhaust gas contains NOx components produced by the second combustion heating portion.
Here, in the combustion treatment facility, the second combustion exhaust gas may be introduced into the exhaust gas treatment portion housing the three-way catalyst together with the first combustion exhaust gas; the second combustion exhaust gas contains an NOx component generated in the radiant tube by combustion of the radiant tube burner using the radiant tube burner as a second combustion device in the second combustion heating section; the first combustion exhaust gas contains an unburned component generated in the first combustion heating portion by the combustion of the first combustion device.
In the combustion processing apparatus, when the first combustion heating portion and the second combustion heating portion are provided, a sealing portion may be provided between the first combustion heating portion and the second combustion heating portion, the first combustion heating portion and the second combustion heating portion may be provided in series, and the object to be processed, which is formed of a continuous band, may be introduced from one combustion heating portion to the other combustion heating portion through the sealing portion to continuously heat-treat the object to be processed.
In the above combustion treatment facility, it is preferable that an oxidation treatment device is provided at a position on a downstream side in a discharge direction of the combustion exhaust gas than the exhaust gas treatment unit accommodating the three-way catalyst; the oxidation treatment device oxidizes unburnt substances remaining in the combustion exhaust gas discharged from the exhaust gas treatment unit. In this way, even when CO and hydrocarbons as unburned components remain without being sufficiently oxidized in the exhaust gas treatment unit housing the three-way catalyst, the appropriate oxidation of such unburned components by the oxidation treatment device can reliably prevent the combustion exhaust gas containing the unburned components from being discharged to the outside, and safety can be further improved.
Effects of the invention
In the combustion processing apparatus of the present invention, since the first combustion exhaust gas and the second combustion exhaust gas are introduced together into the exhaust gas processing unit housing the three-way catalyst as described above, CO and hydrocarbons which are unburned components contained in the first combustion exhaust gas are oxidized into CO by the action of the three-way catalyst2、H2O; and the NOx component contained in the second combustion exhaust gas is reduced to N2(ii) a The first combustion exhaust gas contains an unburned component produced by the first combustion heating portion; the second combustion exhaust gas contains NOx components produced by the second combustion heating portion.
The result is: in the combustion treatment facility of the present invention, the exhaust gas treatment unit housing the three-way catalyst is configured to collect and treat efficiently the combustion exhaust gas containing NOx and the combustion exhaust gas containing unburned components such as CO and hydrocarbons, to bring the combustion exhaust gas into a safe state without damaging the environment, and to appropriately discharge the combustion exhaust gas.
Drawings
Fig. 1 is a schematic explanatory view showing a state in which, in a combustion treatment facility according to an embodiment of the present invention, a first combustion heating unit and a second combustion heating unit are provided in series, a treatment object formed of a continuous band is introduced from one combustion heating unit to the other combustion heating unit through a sealing unit provided between the first combustion heating unit and the second combustion heating unit, and a first combustion exhaust gas generated by the first combustion heating unit and a second combustion exhaust gas generated by the second combustion heating unit are introduced into an exhaust gas treatment unit housing a three-way catalyst and treated during a heating treatment.
Fig. 2 is a schematic explanatory view showing a state in which an oxidation treatment device is provided at a position on the downstream side in the discharge direction of the combustion exhaust gas from the exhaust gas treatment unit housing the three-way catalyst in the combustion treatment facility of the embodiment described above; the oxidation treatment device oxidizes unburnt substances remaining in the combustion exhaust gas discharged from the exhaust gas treatment unit.
Fig. 3 is a schematic explanatory view showing a first modification example in which the first combustion heating portion and the second combustion heating portion are separately provided in the combustion processing facility of the foregoing embodiment.
Fig. 4 is a schematic explanatory view showing a second modification example in which the first combustion heating portion and the second combustion heating portion are provided separately in the combustion processing facility of the foregoing embodiment.
Detailed Description
Hereinafter, a combustion processing apparatus according to an embodiment of the present invention will be specifically described with reference to the drawings. However, the combustion processing equipment of the present invention is not limited to the following embodiments, and can be implemented by being appropriately modified within the scope not changing the gist of the present invention.
In the combustion processing apparatus of this embodiment, as shown in fig. 1, a sealing section 30 is provided between a first combustion heating section 10 that performs combustion by a first combustion device 11 in a non-oxidized state in which an air ratio μ is less than 1 and a second combustion heating section 20 that performs combustion by a second combustion device 21 in a state in which the air ratio μ is greater than 1, the first combustion heating section 10 and the second combustion heating section 20 are provided continuously, and a workpiece W formed of a continuous strip is introduced from the first combustion heating section 10 to the second combustion heating section 20 through the sealing section 30 to perform continuous heat processing on the workpiece W.
In this combustion processing facility, as the first combustion device 11 of the first combustion heating unit 10, a direct flame burner (japanese: direct flame バーナー)11A is used, which mixes and burns the fuel gas supplied from the fuel supply pipe 11A and the combustion air supplied from the combustion air supply pipe 11 b. The air ratio mu of the combustion air to the fuel gas is controlled to be less than 1.0 (mu < 1.0) so as not to oxidize the surface of the object W to be treated composed of the strip. When the air ratio μ of the combustion air to the fuel gas is less than 1.0 and combustion is performed by the direct flame burner 11A, the first combustion exhaust gas generated by the first combustion heating portion 10 contains unburned components including CO and hydrocarbons to some extent.
The first combustion exhaust gas containing such an unburned component to some extent is introduced from the first combustion heating portion 10 to the exhaust gas treatment portion 32 housing the three-way catalyst through the exhaust gas conduit 31.
In the second combustion heating unit 20, a radiant tube burner 21A having a burner 21b provided at one end of a radiant tube 21A is used as the second combustion device 21. The radiant tubes 21A of the radiant tube burners 21A are arranged in the second combustion heating unit 20.
The fuel gas supplied from the fuel supply pipe 21c and the combustion air supplied from the combustion air supply pipe 21d are mixed so that the air ratio μ becomes larger than 1.0(μ > 1.0), introduced into the burner 21b provided at one end of the radiant tube 21a, and burned by the burner 21 b. Thus, when the air ratio μ is larger than 1.0 and combustion is performed, the second combustion exhaust gas contains harmful NOx components to some extent.
The second combustion exhaust gas containing the NOx component is introduced from the other end side of the radiant tube 21a where the burner 21b is not provided, into the exhaust gas treatment section 32 housing the three-way catalyst through the exhaust gas conduit 31, similarly to the first combustion exhaust gas.
Here, when the first combustion exhaust gas containing the unburned components and the second combustion exhaust gas containing the NOx components are introduced into the exhaust gas treatment unit 32 housing the three-way catalyst and these combustion exhaust gases are treated by the three-way catalyst housed in the exhaust gas treatment unit 32, CO and hydrocarbons as the unburned components contained in the first combustion exhaust gas are oxidized into CO2、H2O; and the NOx component contained in the second combustion exhaust gas is reduced to N2The unburned components contained in the first combustion exhaust gas and the NOx components contained in the second combustion exhaust gas are collected and efficiently handled to a safe state without damaging the environment.
The combustion exhaust gas treated in the exhaust gas treatment unit 32 housing the three-way catalyst and brought into a safe state without damaging the environment is introduced into the chimney 33 and discharged.
In the combustion processing apparatus of this embodiment, even after the first combustion exhaust gas containing unburned components and the second combustion exhaust gas containing NOx components are processed in the exhaust gas processing unit 32 housing the three-way catalyst, unburned components remain in the processed combustion exhaust gas, and when the combustion exhaust gas is discharged from the stack 33 with the unburned components remaining, these unburned components accumulate and explode.
Therefore, as shown in fig. 2, it is preferable that an oxidation treatment device 34 is provided on the downstream side in the exhaust direction of the combustion exhaust gas from the exhaust gas treatment unit 32 housing the three-way catalyst, and the oxidation treatment device 34 oxidizes the unburned components remaining in the combustion exhaust gas discharged from the exhaust gas treatment unit 32. Here, the oxidation treatment device 34 may be provided with, for example, a post-combustion device for combusting unburned components remaining in the combustion exhaust gas, or an oxidation treatment unit containing an oxidation catalyst.
In the combustion treatment facility in the above-described embodiment, the first combustion heating unit 10 and the second combustion heating unit 20 are provided continuously with the sealing unit 30 interposed therebetween, and the object W to be treated, which is formed of a continuous band, is introduced from the first combustion heating unit 10 to the second combustion heating unit 20 through the sealing unit 30 to continuously heat-treat the object W, but the first combustion heating unit 10 and the second combustion heating unit 20 may be provided separately, and the object W to be treated may be heated in the first combustion heating unit 10 and the second combustion heating unit 20; the first combustion heating portion 10 is combusted in a non-oxidized state with an air ratio μ less than 1 by the first combustion means 11; the second combustion heating portion 20 is combusted by the second combustion device 21 in a state where the air ratio μ is greater than 1.
For example, as shown in fig. 3, the first combustion heating portion 10 and the second combustion heating portion 20 may be provided separately; the first combustion heating section 10 is the first combustion heating section 10 of the first combustion device 11 that performs combustion in a non-oxidized state with an air ratio μ less than 1 using the direct flame burner 11A similar to the above-described embodiment; the second combustion-heating portion 20 is a second combustion-heating portion 20 in which the second combustion device 21 is combusted in a state where the air ratio μ is greater than 1 using the radiant tube burner 21A similar to that of the above-described embodiment.
Therefore, even in this case, while the first combustion exhaust gas containing an unburned component generated by the first combustion heating unit 10 is introduced from the first combustion heating unit 10 into the exhaust gas treatment unit 32 housing the three-way catalyst via the exhaust gas conduit 31, the second combustion exhaust gas containing an NOx component discharged from the other end side of the radiant tube 21a of the second combustion heating unit 20 where the burner 21b is not provided is introduced into the exhaust gas treatment unit 32 housing the three-way catalyst via the exhaust gas conduit 31 in the same manner as the first combustion exhaust gas, and is treated by the three-way catalyst in the exhaust gas treatment unit 32.
In this case, as in the case of the above-described embodiment, CO and hydrocarbons as unburned components contained in the first combustion exhaust gas are oxidized into CO2、H2O; and the NOx component contained in the second combustion exhaust gas is reduced to N2The combustion exhaust gas is introduced into the stack 33 to be discharged in a safe state without damaging the environment.
When the first combustion heater portion 10 and the second combustion heater portion 20 are separately provided, as shown in fig. 4, the first combustion heater portion 10 may be provided with a direct flame burner 11A that performs combustion by controlling the air ratio μ to less than 1.0 as in the foregoing embodiment, as a first combustion device 11 that performs combustion in a non-oxidized state in which the air ratio μ is less than 1; in the second combustion heating portion 20, the direct flame burner 21B is used as the second combustion device 21 that performs combustion in a state where the air ratio μ is greater than 1, and the combustion is performed such that the air ratio μ is greater than 1.0; the direct flame burner 21B is a direct flame burner 21B that mixes and burns the combustion air supplied from the combustion air supply pipe 21d and the fuel gas supplied from the fuel supply pipe 21 c.
Therefore, while the first combustion exhaust gas containing an unburned component generated by the first combustion heating portion 10 is introduced from the first combustion heating portion 10 into the exhaust gas treatment portion 32 housing the three-way catalyst through the exhaust gas conduit 31, the second combustion exhaust gas containing an NOx component generated by the second combustion heating portion 20 is introduced into the exhaust gas treatment portion 32 housing the three-way catalyst through the exhaust gas conduit 31 in the same manner as the first combustion exhaust gas, and these combustion exhaust gases are treated by the three-way catalyst in the exhaust gas treatment portion 32.
In this case, as in the case of the above-described embodiment, CO and hydrocarbons as unburned components contained in the first combustion exhaust gas are oxidized into CO2、H2O; and said second combustion exhaust gas stationThe NOx-containing component is reduced to N2The combustion exhaust gas is introduced into the stack 33 to be discharged in a safe state without damaging the environment.
Even when the first combustion heating portion 10 and the second combustion heating portion 20 are separately provided as shown in fig. 3 and 4, it is preferable that the oxidation treatment device 34 is provided at a position downstream in the direction of discharging the burned exhaust gas from the exhaust gas treatment portion 32 housing the three-way catalyst as shown in fig. 2; the oxidation treatment device 34 oxidizes unburnt substances remaining in the combustion exhaust gas discharged from the exhaust gas treatment unit 32.
Although not shown in the drawings, it is needless to say that flow rate adjustment valves for adjusting the air ratio and the like may be provided in the fuel supply pipes 11a and 21c and the combustion air supply pipes 11b and 21 d.
Description of the symbols
10: first combustion heating part
11: first combustion device
11A: direct flame burner
11 a: fuel supply pipe
11 b: air supply pipe for combustion
20: second combustion heating part
21: second combustion device
21A: radiant tube burner
21B: direct flame burner
21 a: radiant tube
21 b: burner nozzle
21 c: fuel supply pipe
21 d: air supply pipe for combustion
30: sealing part
31: exhaust gas duct
32: exhaust gas treatment unit
33: chimney
34: oxidation treatment device
W: object to be treated

Claims (3)

1. A combustion treatment apparatus has a first combustion heating portion and a second combustion heating portion; the first combustion heating part is used for heating the processed object by combusting the processed object in a non-oxidation state with an air ratio less than 1 through a first combustion device; the second combustion heating portion performs combustion in a state where an air ratio is greater than 1 by a second combustion device to heat the object to be treated; introducing a first combustion exhaust gas and a second combustion exhaust gas together into an exhaust gas treatment unit housing a three-way catalyst, and treating the combustion exhaust gases in the exhaust gas treatment unit; the first combustion exhaust gas contains an unburned component generated in the first combustion heating portion by combustion in the first combustion device; the second combustion exhaust gas contains a NOx component generated in the second combustion heating portion by the combustion of the second combustion device;
a sealing section is provided between the first combustion heating section and the second combustion heating section, the first combustion heating section and the second combustion heating section are provided in series, and a treatment target object formed of a continuous strip is introduced from one combustion heating section to the other combustion heating section through the sealing section to continuously heat-treat the treatment target object.
2. The combustion treatment apparatus according to claim 1, wherein a second combustion exhaust gas is introduced into the exhaust gas treatment portion that houses a three-way catalyst together with a first combustion exhaust gas; the second combustion exhaust gas contains an NOx component generated in the radiant tube by combustion of the radiant tube burner using the radiant tube burner as a second combustion device in the second combustion heating section; the first combustion exhaust gas contains an unburned component generated in the first combustion heating portion by the combustion of the first combustion device.
3. The combustion treatment facility according to claim 1 or 2, wherein an oxidation treatment device is provided at a position on a downstream side in a discharge direction of the combustion exhaust gas than the exhaust gas treatment portion that houses the three-way catalyst; the oxidation treatment device oxidizes unburnt substances remaining in the combustion exhaust gas discharged from the exhaust gas treatment unit.
CN201611093307.6A 2016-01-15 2016-12-01 Combustion treatment apparatus Active CN106979529B (en)

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JP6525908B2 (en) * 2016-03-15 2019-06-05 中外炉工業株式会社 Radiant tube burner equipment

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JP5431677B2 (en) * 2008-02-25 2014-03-05 ヤンマー株式会社 Exhaust gas purification device
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CN103363534A (en) * 2013-07-30 2013-10-23 中冶南方(武汉)威仕工业炉有限公司 Novel catalytic combustion industrial furnace
CN105003912A (en) * 2015-07-24 2015-10-28 湖南高华环保股份有限公司 Low-NOx combustion method and low-NOx combustion system
CN105157020A (en) * 2015-09-25 2015-12-16 中国神华能源股份有限公司 Oxygen-enriched combustion system and method

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