CN111853828A - Exhaust gas guide-out nozzle - Google Patents
Exhaust gas guide-out nozzle Download PDFInfo
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- CN111853828A CN111853828A CN202010315980.XA CN202010315980A CN111853828A CN 111853828 A CN111853828 A CN 111853828A CN 202010315980 A CN202010315980 A CN 202010315980A CN 111853828 A CN111853828 A CN 111853828A
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- Prior art keywords
- exhaust gas
- flow path
- temperature
- discharge nozzle
- corrosive
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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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
- F23J13/00—Fittings for chimneys or flues
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chimneys And Flues (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Provided is an exhaust gas discharge nozzle capable of preventing the occurrence of stress corrosion cracking at a fixed part and a part in the vicinity thereof. An exhaust gas discharge nozzle (10) for discharging exhaust gas (8) from an exhaust gas flow path (5), wherein the exhaust gas flow path (5) is supplied with high-temperature exhaust gas (8), and the high-temperature exhaust gas (8) generates corrosive liquid when the temperature is below an acid dew point, the exhaust gas discharge nozzle (10) comprising: an outer cylinder (11) that is inserted through a through-hole (20a) in a wall (20) of the exhaust gas flow path (5) and is fixed to the wall (20); an inner cylinder (12) inserted through the outer cylinder (11) with a gap therebetween; and a seal structure (13) that seals the gap. A non-corrosive portion (15) of the inner cylinder (12) is fixed to the outer cylinder (11), and the non-corrosive portion (15) is a portion of the inner cylinder (12) where the temperature of the exhaust gas (8) that is led out is higher than the boiling point of the corrosive liquid.
Description
Technical Field
The present invention relates to an exhaust gas discharge nozzle.
Background
Various nozzles are provided in an exhaust gas flow path of the waste incineration apparatus. For example, in the refuse incineration facility described in patent document 1, an injection nozzle for injecting a chemical into the exhaust gas flow path is provided. On the other hand, exhaust gas from a known waste incineration facility is corrosive. Therefore, in the waste incineration apparatus, the blowing nozzle is covered with a protection pipe, thereby avoiding corrosion of the surface of the blowing nozzle.
Patent document 1: japanese laid-open patent publication No. 2003-080116
In the exhaust gas flow path of the waste incineration facility, for example, a nozzle for leading out a gas for pressure measurement from the exhaust gas flow path may be provided in order to monitor the pressure of the exhaust gas. In this case, stress corrosion cracking may occur in the nozzle. Even if stress corrosion cracking occurs in the nozzle, if the inside of the exhaust passage is designed to have a negative pressure, the exhaust gas does not leak to the outside, and this problem does not immediately become a serious problem. However, the pressure monitoring may not be possible. This problem is a problem common to combustion equipment that generates corrosive high-temperature exhaust gas, and to nozzles that discharge exhaust gas regardless of the application. Further, since some residual stress due to processing is generated at the fixing portion, this problem is also a problem common to fixing methods other than welding.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object thereof is to provide an exhaust gas lead-out nozzle capable of preventing stress corrosion cracking from occurring at a fixed portion and a portion in the vicinity thereof.
The present inventors have conducted extensive studies on an exhaust gas discharge nozzle for discharging a gas for pressure measurement from an exhaust gas flow path in a waste incineration facility. As a result, the following findings were obtained.
As shown in fig. 3, the exhaust gas discharge nozzle 41 is provided, for example, in a through hole in the wall 20 of the exhaust gas flow path 5 so as to be inserted into the through hole. The exhaust gas discharge nozzle 41 is fixed to the metal casing 21 of the wall 20 by welding (fillet welding) 42, and the tip thereof is connected to a pressure pipe (not shown) for pressure measurement.
When the exhaust gas 8 is, for example, combustion exhaust gas of garbage, in this state, when the exhaust gas 8 flows through the exhaust passage 5, the exhaust gas 8 having passed through the exhaust gas discharge nozzle 41 is cooled and condensed by heat dissipation downstream. This generates a corrosive liquid. Here, since the exhaust gas 8 contains sulfurous acid gas, when the exhaust gas 8 is cooled to the acid dew point (for example, 140 ℃) of the exhaust gas or lower, dew condensation occurs, and sulfuric acid is generated as a corrosive liquid. Then, the sulfuric acid flows down from the pressure guide pipe toward the exhaust flow path 5.
Here, the following 3 conditions are satisfied: i) a tensile stress exists in the target part; ii) the subject site is in an environment that is subject to corrosion; and iii) stress corrosion cracking occurs when the object is a material having low stress corrosion cracking resistance.
The condition i) is satisfied because the tensile stress generated by the weld 42 remains in the vicinity of the weld 42 of the exhaust gas discharge nozzle 41. The condition of ii) is satisfied because a corrosive liquid is generated. The condition of iii) is satisfied because the exhaust gas discharge nozzle 41 is made of a material such as a general stainless steel or carbon steel in view of cost.
Therefore, the stress corrosion crack 43 is generated in the vicinity of the weld 42 of the exhaust gas discharge nozzle 41 by the sulfuric acid flowing down.
On the other hand, with respect to the conditions of ii), sulfuric acid is evaporated at a boiling point of 337 ℃ or higher. Therefore, the sulfuric acid flowing down further beyond the vicinity of the weld joint 42 gradually evaporates as it approaches the exhaust gas flow path 5 through which the exhaust gas 8 of 700 to 900 ℃. Therefore, the portion of the exhaust gas discharge nozzle 41 close to the exhaust gas flow path 5 is in an environment where corrosion does not occur.
Therefore, the present inventors have conceived to weld a portion of the exhaust gas discharge nozzle 41 in such a non-corrosive environment.
The fixing method of the exhaust gas outlet nozzle 41 is not limited to welding, and the finding can be applied to all fixing methods in which residual stress is generated at a fixed portion. The use of the exhaust gas discharged from the exhaust gas discharge nozzle 41 is not particularly limited. Further, the type of corrosive liquid differs depending on the nature or type of the exhaust gas 8, but only the portion of the exhaust gas discharge nozzle 41 in the environment where corrosion does not occur differs in accordance with this, and this finding can be applied regardless of the nature or type of the exhaust gas 8.
The present invention has been completed based on such findings.
An exhaust gas discharge nozzle according to an aspect (aspect) of the present invention is an exhaust gas discharge nozzle for discharging exhaust gas from an exhaust gas flow path through which the exhaust gas having a high temperature that generates a corrosive liquid when the temperature is equal to or lower than an acid dew point, the exhaust gas discharge nozzle including: an outer cylinder inserted through a through hole in a wall of the exhaust gas flow path and fixed to the wall; an inner cylinder inserted through the outer cylinder with a gap therebetween; and a sealing structure for sealing the gap, wherein a non-corrosive portion of the inner tube, which is a portion of the inner tube where the temperature of the exhaust gas to be led out is higher than the boiling point of the corrosive liquid, is fixed to the outer tube. Here, the fixing method of the inner cylinder to the outer cylinder is not particularly limited. Further, the use of the exhaust gas discharged from the exhaust gas discharge nozzle is not particularly limited.
According to this configuration, the non-corrosive portion of the inner tube is welded to the outer tube fixed to the wall of the exhaust gas flow path, and the temperature of the exhaust gas in the non-corrosive portion is higher than the boiling point of the corrosive liquid. Therefore, even if the exhaust gas condenses downstream of the exhaust gas discharge nozzle to form a corrosive liquid and the exhaust gas flows down, the exhaust gas evaporates in the non-corrosive portion. Therefore, stress corrosion cracking can be prevented from occurring at the fixing portion of the inner tube of the exhaust gas discharge nozzle and the vicinity thereof.
The inner cylinder may be divided into a 1 st part including the non-erosion portion and a 2 nd part which is a remaining part of the inner cylinder after the 1 st part is removed.
According to this configuration, although the 2 nd part needs to be replaced with a new one when the 2 nd part is thinned by the corrosive liquid flowing down, the 2 nd part can be easily replaced by fixing the 2 nd part to a detachable appropriate place in such a manner that tensile stress does not occur.
When the corrosive liquid is sulfuric acid, a portion of the inner cylinder where the temperature of the exhaust gas is higher than 337 ℃ may be fixed to the outer cylinder, and when the corrosive liquid is hydrochloric acid, a portion of the inner cylinder where the temperature of the exhaust gas is higher than 110 ℃ may be fixed to the outer cylinder.
According to this configuration, when the corrosive liquid generated when the temperature of the exhaust gas is equal to or lower than the acid dew point is sulfuric acid or hydrochloric acid, stress corrosion cracking can be reliably prevented from occurring at the fixed portion of the inner tube of the exhaust gas discharge nozzle and the vicinity thereof.
The non-corrosive portion of the inner tube may be fixed to the outer tube by welding.
With this configuration, a fixed state with good heat resistance can be obtained.
The front end of the inner cylinder is connected to a device that uses the exhaust gas that is conducted out.
According to this configuration, even if the exhaust gas is cooled by heat dissipation and condensed in the flow path of the exhaust gas before reaching the device using the exhaust gas, and a corrosive liquid is generated and flows down, it is possible to prevent the occurrence of stress corrosion cracking at the fixing portion of the inner tube of the exhaust gas discharge nozzle and the vicinity thereof.
The exhaust gas flow path may be an exhaust gas flow path of a waste incineration facility, a biomass fuel combustion facility, or a byproduct of a chemical plant.
According to this configuration, the exhaust gas in the exhaust gas flow path of the waste incineration facility, the biomass fuel combustion facility, or the by-product of the chemical plant is corrosive and high-temperature exhaust gas, and therefore the present invention can exert a particularly significant effect.
The present invention has an effect of providing an exhaust gas discharge nozzle capable of preventing the occurrence of stress corrosion cracking at a fixed portion and a portion in the vicinity thereof.
Drawings
Fig. 1 is a schematic diagram showing an outline of a waste incineration facility provided with an exhaust gas discharge nozzle according to embodiment 1.
Fig. 2 is a sectional view showing the structure of the exhaust gas delivery nozzle of fig. 1.
Fig. 3 is a sectional view showing the structure of an exhaust gas discharge nozzle of a comparative example.
Fig. 4 is a sectional view showing the structure of the exhaust gas discharge nozzle according to embodiment 2.
Description of the reference symbols
1: an incinerator; 2: a waste heat boiler; 3: an energy saver; 4: a garbage input unit; 5: an exhaust gas flow path; 6: a superheater tube; 8: exhausting; 10: an exhaust gas discharge nozzle; 11: an outer cylinder; 12: an inner barrel; 12A: part 1; 12B: part 2; 13: a sealing structure; 15: a non-corrosive portion; 16: welding (plug welding); 20: a wall; 20 a: a through hole; 21: a housing; 22: a refractory wall; 41: an exhaust gas discharge nozzle (before countermeasure); 42: welding (fillet welding); 43: stress corrosion cracking; 100: a refuse incineration device.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, the same or corresponding elements are denoted by the same reference numerals throughout the drawings, and redundant description thereof will be omitted. The present invention is not limited to the following embodiments.
(embodiment mode 1)
< exhaust gas flow path >
First, an exhaust gas flow path provided with the exhaust gas discharge nozzle according to embodiment 1 will be described. The exhaust gas flow path is not particularly limited as long as it is a flow path through which high-temperature exhaust gas that generates a corrosive liquid when the temperature is equal to or lower than the acid dew point flows. Examples of such an exhaust gas flow path include an exhaust gas flow path of a waste incineration facility, a biomass fuel combustion facility, and a byproduct of a chemical plant. Hereinafter, the exhaust gas discharge nozzle will be described by taking an exhaust gas flow path of the waste incineration facility as an example. The use of the exhaust gas discharged from the exhaust gas discharge nozzle is not particularly limited.
< garbage incineration facility >
Fig. 1 is a schematic diagram showing an outline of a waste incineration facility provided with an exhaust gas discharge nozzle according to embodiment 1.
Referring to fig. 1, the waste incineration apparatus 100 includes a waste input unit 4. An incinerator 1 is provided below the garbage input portion 4 to burn the garbage input from the garbage input portion 4. A waste heat boiler 2 is provided above the incinerator 1. The waste heat boiler 2 is provided with an exhaust gas flow path 5 communicating with the incinerator 1, and exhaust gas 8 generated by combustion of garbage flows through the exhaust gas flow path 5 to absorb heat. A superheater tube 6 and an economizer 3 are provided in the middle of the exhaust passage 5. The economizer 3 is provided with a heat transfer pipe (not shown) that exchanges heat with the exhaust gas 8, and the heat of the exhaust gas 8 is recovered therein. The exhaust gas 8 having passed through the economizer 3 is further guided to a downstream facility (not shown), and is finally discharged to the atmosphere from a stack (not shown).
The walls 20 of the incinerator 1 and the waste heat boiler 2 are made of refractory walls 22, and the surfaces of the refractory walls 22 are covered with a metal casing 21 (see fig. 2). An exhaust gas outlet nozzle 10 is provided at an appropriate position of the exhaust passage 5. A fan (not shown) that sucks and discharges the exhaust gas 8 is disposed downstream of the economizer 3 in the exhaust flow path 5. Therefore, the inside of the exhaust passage 5 is negative pressure with respect to the outside.
< exhaust gas discharge nozzle >
[ Structure ]
Fig. 2 is a sectional view showing the structure of the exhaust gas delivery nozzle 10. Referring to fig. 2, a wall 20 of the exhaust passage 5 is composed of a refractory wall 22 and a metal casing 21 covering the surface of the refractory wall 22. The structure of the wall 20 is not particularly limited.
The wall 20 is provided with a through hole 20 a. The through hole 20a is provided to extend obliquely upward through the wall 20 from the inner surface toward the outer surface of the wall 20. The through-hole 20a may be oriented in any direction. The outer cylinder 11 is inserted through the through hole 20 a. In fig. 2 it is shown that both ends of the outer barrel 11 are coplanar with both faces of the wall 20, but the ends of the outer barrel 11 may also protrude from the outer and/or inner surface of the wall 20. The outer cylinder 11 is fixed to the wall 20 by suitable means. Here, the outer cylinder 11 is fixed to the housing 21 by welding (not shown).
An inner cylinder 12 is inserted through the outer cylinder 11 with a gap from the outer cylinder 11. The inner cylinder 12 has a base end (lower end) connected to the exhaust passage 5 and a tip end connected to a device (not shown) utilizing the exhaust gas 8. The base end (lower end) of the inner cylinder 12 may be coplanar with the outer cylinder 11 or may protrude from the outer cylinder 11. The device that utilizes the exhaust gas 8 is here a pressure measuring device that measures the pressure of the exhaust gas 8. The pressure measuring instrument and the tip of the inner cylinder 12 are connected by a pressure pipe (not shown) for measuring pressure. The connection destination of the tip of the inner tube 12 is not particularly limited.
The inner cylinder 12 is fixed to the outer cylinder 11 by welding 16. The exhaust gas 8 generated by burning the garbage contains corrosive gas. Therefore, when the temperature of the exhaust gas 8 is below the acid dew point, a corrosive liquid is generated. When the property of the exhaust gas 8 is a temperature equal to or lower than the acid dew point, for example, when sulfuric acid is produced, the acid dew point of the exhaust gas 8 is 140 ℃. On the other hand, the temperature of the exhaust gas 8 flowing through the exhaust gas flow path 5 is, for example, approximately 800 ℃. Therefore, the base end portion of the inner tube 12 is at a temperature higher than the boiling point of the corrosive liquid of the exhaust gas 8. The boiling point of the corrosive liquid is e.g. 337 c in case the corrosive liquid is sulphuric acid. Hereinafter, the portion 15 of the inner tube 12 where the temperature of the exhaust gas 8 is higher than the boiling point of the corrosive liquid generated by condensation of the exhaust gas 8 is referred to as a non-corrosive portion. The non-corroded portion 15 is fixed to the outer tube 11 by welding 16, for example. The weld 16 is, for example, a plug weld. The method of fixing the non-corroded portion 15 to the outer cylinder 11 is not particularly limited. For example, when the temperature of the exhaust gas 8 is low, the fixation may be performed using heat-resistant putty or the like. On the other hand, when the solder 16 is used as the fixing method, a fixed state with good heat resistance can be obtained.
The inner cylinder 12 has a higher temperature at a portion closer to the exhaust passage 5. This is because the temperature of the exhaust gas 8 flowing in the inner tube 12 becomes lower as the exhaust gas 8 is farther from the exhaust passage 5. Therefore, the non-erosion portion 15 exists in the inner tube 12 within a range of a constant (certain) distance from the exhaust gas flow path 5. The fixed distance varies depending on the properties, temperature, and the like of the exhaust gas 8 in the exhaust passage 5. The fixed distance differs depending on the type of the exhaust gas 8 corresponding to the type of the facility that generates the exhaust gas 8 (the type of the waste incineration facility, the biomass fuel combustion facility, the chemical plant, and the like).
In the present embodiment, in order to take these circumstances into consideration, in order to locate the portion of the inner tube 12 where the welding 16 is performed at the non-erosion portion 15, for example, when the temperature of the exhaust gas 8 in the exhaust gas flow passage 5 is 700 to 900 ℃, the welding 16 is performed at a portion of the inner tube 12 where the temperature of the exhaust gas 8 is higher than 337 ℃.
Further, when the property of the exhaust gas 8 is a property of generating hydrochloric acid at a temperature equal to or lower than the acid dew point, since the boiling point of hydrochloric acid is 110 ℃, a portion of the exhaust gas 8 having a temperature higher than 110 ℃ is a non-corrosive portion 15, and the non-corrosive portion 15 is welded 16.
The outer cylinder 11 and the inner cylinder 12 are made of a material such as stainless steel or carbon steel.
The gap between the outer cylinder 11 and the inner cylinder 12 is sealed by a seal structure 13. The sealing structure 13 is not particularly limited as long as it can seal the gap between the outer cylinder 11 and the inner cylinder 12 and has heat resistance. Here, as the seal structure 13, a heat-resistant seal material is applied to the entrance of the gap.
[ Effect ]
Next, the operational effects of the exhaust gas outlet nozzle 10 configured as described above will be described in comparison with a comparative example. Fig. 3 is a sectional view showing the structure of the exhaust gas discharge nozzle 41 of the comparative example. Fig. 3 schematically shows the exhaust gas delivery nozzle 41 (not shown in cross section) for easy understanding. The exhaust gas discharge nozzle 41 is formed of a single pipe. The exhaust gas discharge nozzle 41 is fixed to the casing 21 of the wall 20 by welding (fillet welding) 42. The other configuration is the same as that of the exhaust gas discharge nozzle 10 of the present embodiment.
In the comparative example, the exhaust gas 8 having passed through the exhaust gas discharge nozzle 41 is cooled by heat dissipation in a pressure pipe (not shown) for pressure measurement, and the exhaust gas 8 forms dew to generate a corrosive liquid. The corrosive liquid flows down along the pressure pipe to reach the vicinity of the weld 42. Since the tensile stress generated by the weld 42 remains in the vicinity of the weld 42 of the exhaust gas discharge nozzle 41, the corrosive liquid causes stress corrosion cracking 43 in the vicinity.
In contrast, in the exhaust gas outlet nozzle 10 of the present embodiment, the non-corrosive portion 15 of the inner tube 12 is fixed by welding 16 to the outer tube 11 fixed to the wall 20 of the exhaust gas flow path 5, and the temperature of the exhaust gas 8 in the non-corrosive portion 15 is higher than the boiling point of a corrosive liquid (here, sulfuric acid or hydrochloric acid) generated when the temperature of the exhaust gas 8 is equal to or lower than the acid dew point. Therefore, even if the exhaust gas 8 is at a temperature equal to or lower than the acid dew point downstream of the exhaust gas discharge nozzle 10 to generate a corrosive liquid and the corrosive liquid flows down, the corrosive liquid evaporates in the non-corrosive section 15. Therefore, stress corrosion cracking can be prevented from occurring in the portion of the exhaust gas discharge nozzle 10 where the welding 16 is performed and in the vicinity thereof.
(embodiment mode 2)
Fig. 4 is a sectional view showing the structure of the exhaust gas discharge nozzle according to embodiment 2.
Referring to fig. 4, in the exhaust gas outlet nozzle 10 according to embodiment 2, the inner tube 12 is divided into a 1 st portion 12A including the non-erosion portion 15 and a 2 nd portion 12B which is the remaining portion of the inner tube 12 after the 1 st portion 12A is removed. The base end (lower end) of the 2 nd part 12B abuts the tip end (upper end) of the 1 st part 12A. The part of the 2 nd part 12B projecting from the outer cylinder 11 is for example detachably fixed to the housing 21 of the wall 20 by suitable fixing means which do not generate tensile stress. The other configuration is the same as that of the exhaust gas discharge nozzle 10 according to embodiment 1.
According to embodiment 2, when the 2 nd portion 12B is thinned by the corrosive liquid flowing down, it is necessary to replace it with a new one, but the 2 nd portion 12B can be easily replaced.
(other embodiments)
In the above-described embodiment, the case where the exhaust gas lead-out nozzle of the present invention is applied to the exhaust gas flow path of the waste incineration facility has been exemplified, but the exhaust gas lead-out nozzle of the present invention can be applied to an exhaust gas flow path other than the waste incineration facility. For example, the exhaust gas discharge nozzle of the present invention can be applied to an exhaust gas flow path of a biomass fuel combustion facility, an exhaust gas flow path of a byproduct of a chemical plant, and the like.
From the above description, it will be apparent to those skilled in the art that many modifications and other embodiments are possible. Accordingly, the foregoing description should be construed as exemplary only.
The exhaust gas discharge nozzle of the present invention is useful as an exhaust gas discharge nozzle capable of preventing stress corrosion cracking from occurring at a fixed portion and a portion in the vicinity thereof.
Claims (6)
1. An exhaust gas discharge nozzle for discharging exhaust gas from an exhaust gas flow path through which the exhaust gas having a high temperature that generates a corrosive liquid when the temperature is below an acid dew point,
The exhaust gas discharge nozzle includes:
an outer cylinder inserted through a through hole in a wall of the exhaust gas flow path and fixed to the wall;
an inner cylinder inserted through the outer cylinder with a gap therebetween; and
a sealing structure that seals the gap,
the non-corrosive portion of the inner tube is fixed to the outer tube, and the non-corrosive portion is a portion of the inner tube where the temperature of the discharged exhaust gas is higher than the boiling point of the corrosive liquid.
2. The exhaust gas delivery nozzle according to claim 1,
the inner tube is divided into a 1 st part including the non-erosion part and a 2 nd part which is a remaining part after the 1 st part is removed from the inner tube.
3. The exhaust gas delivery nozzle according to claim 1 or 2,
when the corrosive liquid is sulfuric acid, a portion of the inner cylinder where the temperature of the exhaust gas is higher than 337 ℃ is fixed to the outer cylinder, and when the corrosive liquid is hydrochloric acid, a portion of the inner cylinder where the temperature of the exhaust gas is higher than 110 ℃ is fixed to the outer cylinder.
4. The exhaust gas delivery nozzle according to claim 1,
the non-corrosive portion of the inner tube is fixed to the outer tube by welding.
5. The exhaust gas delivery nozzle according to claim 1,
the front end of the inner cylinder is connected to a device that uses the exhaust gas that is conducted out.
6. The exhaust gas delivery nozzle according to claim 1,
the exhaust gas flow path is an exhaust gas flow path of a waste incineration facility, a biomass fuel combustion facility, or a byproduct of a chemical plant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-083964 | 2019-04-25 | ||
| JP2019083964A JP7265925B2 (en) | 2019-04-25 | 2019-04-25 | Exhaust gas discharge nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111853828A true CN111853828A (en) | 2020-10-30 |
| CN111853828B CN111853828B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010315980.XA Active CN111853828B (en) | 2019-04-25 | 2020-04-21 | Exhaust gas leading-out nozzle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7265925B2 (en) |
| CN (1) | CN111853828B (en) |
Citations (11)
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| JPS5535255A (en) * | 1978-09-05 | 1980-03-12 | Fuji Electric Co Ltd | Sampling filter collector for exhaust gas |
| JPH1163480A (en) * | 1997-08-11 | 1999-03-05 | N K K Plant Kensetsu Kk | Method for preventing local corrosion at dew point generated at branched pipe of exhaust gas flue |
| CN1315627A (en) * | 2000-03-30 | 2001-10-03 | 株式会社神户制钢所 | High-temp waste gas temp controller and temp controlling method |
| JP2002357314A (en) * | 2001-06-01 | 2002-12-13 | Daido Steel Co Ltd | Duct for exhaust gas |
| JP2003080116A (en) * | 2001-09-14 | 2003-03-18 | Takuma Co Ltd | Nozzle for blowing |
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| JP2015175597A (en) * | 2014-03-12 | 2015-10-05 | 中国電力株式会社 | Exhaust gas sampling apparatus, and cleaning method for sampling tube |
| CN205560784U (en) * | 2016-01-22 | 2016-09-07 | 抚顺石油机械有限责任公司 | Four unification sulfur recovery waste heat utilization processing apparatus |
| CN107741167A (en) * | 2017-09-16 | 2018-02-27 | 深圳供电局有限公司 | Corrosion-resistant heat exchanger |
| CN207316951U (en) * | 2017-10-16 | 2018-05-04 | 滨州学院 | A kind of Environment protection chimney of condensate water-proof corrosion |
| CN109396777A (en) * | 2018-11-16 | 2019-03-01 | 上海蜂云航空科技有限公司 | A method of for preventing pressure vessels for the chemical industry nozzle erosion from cracking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532934Y2 (en) * | 1977-12-15 | 1980-08-05 | ||
| JPH04175592A (en) * | 1990-11-07 | 1992-06-23 | Komu:Kk | Pipe mounting device |
| JP3964270B2 (en) * | 2002-06-18 | 2007-08-22 | 中外炉工業株式会社 | Regenerative burner having an inert gas introduction path connected to a fuel supply path and its operating method |
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2019
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535255A (en) * | 1978-09-05 | 1980-03-12 | Fuji Electric Co Ltd | Sampling filter collector for exhaust gas |
| JPH1163480A (en) * | 1997-08-11 | 1999-03-05 | N K K Plant Kensetsu Kk | Method for preventing local corrosion at dew point generated at branched pipe of exhaust gas flue |
| US20030108838A1 (en) * | 1999-12-07 | 2003-06-12 | Rene Bidart | Injector for use in a device for combustion of corrosive products |
| CN1315627A (en) * | 2000-03-30 | 2001-10-03 | 株式会社神户制钢所 | High-temp waste gas temp controller and temp controlling method |
| JP2002357314A (en) * | 2001-06-01 | 2002-12-13 | Daido Steel Co Ltd | Duct for exhaust gas |
| JP2003080116A (en) * | 2001-09-14 | 2003-03-18 | Takuma Co Ltd | Nozzle for blowing |
| JP2015175597A (en) * | 2014-03-12 | 2015-10-05 | 中国電力株式会社 | Exhaust gas sampling apparatus, and cleaning method for sampling tube |
| CN205560784U (en) * | 2016-01-22 | 2016-09-07 | 抚顺石油机械有限责任公司 | Four unification sulfur recovery waste heat utilization processing apparatus |
| CN107741167A (en) * | 2017-09-16 | 2018-02-27 | 深圳供电局有限公司 | Corrosion-resistant heat exchanger |
| CN207316951U (en) * | 2017-10-16 | 2018-05-04 | 滨州学院 | A kind of Environment protection chimney of condensate water-proof corrosion |
| CN109396777A (en) * | 2018-11-16 | 2019-03-01 | 上海蜂云航空科技有限公司 | A method of for preventing pressure vessels for the chemical industry nozzle erosion from cracking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111853828B (en) | 2023-07-18 |
| JP7265925B2 (en) | 2023-04-27 |
| JP2020180742A (en) | 2020-11-05 |
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