CN105402746A - Membrane type wall tube screen tube-bending device for forming smoke exhaust opening and smoke gas mixing method - Google Patents
Membrane type wall tube screen tube-bending device for forming smoke exhaust opening and smoke gas mixing method Download PDFInfo
- Publication number
- CN105402746A CN105402746A CN201510984095.XA CN201510984095A CN105402746A CN 105402746 A CN105402746 A CN 105402746A CN 201510984095 A CN201510984095 A CN 201510984095A CN 105402746 A CN105402746 A CN 105402746A
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- China
- Prior art keywords
- membrane type
- type wall
- membrane panel
- flue gas
- smoke
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- 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)
- Treating Waste Gases (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a membrane type wall tube screen tube-bending device for forming a smoke exhaust opening and a smoke gas mixing method. Discharge amount of NOx grows with each passing day, NOX pollution can form acid rain and photochemical smoke to damage an ecological environment, and the influence is increasingly concerned and taken seriously by people; the discharge amount, at the present stage, of NOx of some old thermal power plants is relatively high, does not meet the requirements of the discharge amount of NOx according to the national laws and regulations, so that the old thermal power plants are required to modify to reduce the discharge amount of NOx. According to the membrane type wall tube screen tube-bending device, the middle part of a rear smoke flue membrane type wall tube screen is provided with a bent tube (2) outside a furnace every one pitch; a smoke extraction opening (3) is formed in the bent tube; the outer side of the rear smoke flue membrane type wall tube screen is provided with a sealing bent plate (4); the outer side of the rear smoke flue membrane type wall tube screen is provided with a sealing plate (5); and the bent tube on the rear smoke flue membrane type wall tube screen is provided with an anti-abrasion plate. The membrane type wall tube screen tube-bending device is applied to solving the problem of extracting smoke gas from the rear smoke flue membrane type wall tube screen when a coal economizer bypass is additionally arranged on a flue gas denitrification device.
Description
technical field:
the present invention relates to a kind of membrane panel smoking mouth swan neck system and mixed flue gas method.
background technology:
according to China's power planning, estimate 2015-2020, NO
x
discharge capacity will more than SO
2
discharge capacity, becomes the first acid contaminant of China, and therefore, country forcibly administers the NO of thermal power plant by regulation
x
discharge capacity, along with the development of China's power industry, NO
x
discharge capacity grow with each passing day, as everyone knows, NO
x
pollution can form acid rain, photochemical fog, destroys ecological environment, and its impact more and more causes concern and the attention of people, some old power plant NO of present stage
x
discharge capacity relatively high, do not meet national legislation NO
x
the requirement of discharge capacity, need to carry out transformation and install out of stock device additional, to reduce NO
x
discharge capacity, the flue-gas temperature of existing economizer bypass place used does not reach the temperature needed for out of stock device, and it is insufficient that this just makes denitration reaction carry out, and denitration effect is very undesirable.
summary of the invention:
the object of this invention is to provide a kind of membrane panel smoking mouth swan neck system and mixed flue gas method.
above-mentioned object is realized by following technical scheme:
a kind of membrane panel smoking mouth swan neck system, its composition comprises: rear pass membrane panel, be equipped with to the bend pipe outside stove every a pitch in the middle part of described rear pass membrane panel, described bend pipe forms smoking mouth, outside described rear pass membrane panel stove, sealing bent plate is housed, outside described rear pass membrane panel stove, sealing plate is housed, the bend pipe on described rear pass membrane panel is equipped with wear strip.
the mixed flue gas method of described membrane panel smoking mouth swan neck system, by high-temperature flue gas is extracted out to the bend pipe outside stove by membrane panel when this device uses, mix with the low-temperature flue gas of economizer bypass place, make mixed flue-gas temperature can reach flue-gas temperature needed for denitration, thus the denitration reaction of the flue gas entering denitrification apparatus can be carried out smoothly, by the NO in flue gas
x
slough, solve the problem that need extract flue gas when equipment for denitrifying flue gas installs economizer bypass additional from rear pass membrane panel.
beneficial effect of the present invention:
1. the present invention before being initiated, the flue-gas temperature of economizer bypass place did not reach the temperature needed for out of stock device originally, at this moment the flue gas at the higher rear pass place extracting high-temperature of flue-gas temperature is just needed, mix with flue gas herein and reach out of stock required flue-gas temperature, by high-temperature flue gas is extracted out to the bend pipe outside stove by membrane panel when this device uses, mix with the low-temperature flue gas of economizer bypass place, make mixed flue-gas temperature can reach flue-gas temperature needed for denitration, thus the denitration reaction of the flue gas entering denitrification apparatus can be carried out smoothly, by the NO in flue gas
x
slough, solve the problem that need extract flue gas when equipment for denitrifying flue gas installs economizer bypass additional from rear pass membrane panel.
the change of structure of the present invention is little, is convenient to site operation; Smoking mouth tube panel have also been obtained good solution by the problem that flue gas weares and teares simultaneously.
the present invention be in the relevant position of rear pass membrane panel every a pitch pipe to bend pipe outside stove, thus form smoking mouth, to solve the problem extracting flue gas from rear pass membrane panel.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is top views of accompanying drawing 1.
accompanying drawing 3 is structural representations of the present invention one pipe joint.
detailed description of the invention:
embodiment 1:
the present invention's composition comprises: rear pass membrane panel (1), be equipped with to the bend pipe (2) outside stove every a pitch in the middle part of described rear pass membrane panel, described bend pipe forms smoking mouth (3), sealing bent plate (4) is housed outside described rear pass membrane panel stove, outside described rear pass membrane panel stove, sealing plate (5) is housed, the bend pipe on described rear pass membrane panel is equipped with wear strip (6).
embodiment 2:
a kind of mixed flue gas method utilizing membrane panel smoking mouth swan neck system described in embodiment 1, by high-temperature flue gas is extracted out to the bend pipe outside stove by membrane panel when this device uses, mix with the low-temperature flue gas of economizer bypass place, make mixed flue-gas temperature can reach flue-gas temperature needed for denitration, thus the denitration reaction of the flue gas entering denitrification apparatus can be carried out smoothly, by the NO in flue gas
x
slough, solve the problem that need extract flue gas when equipment for denitrifying flue gas installs economizer bypass additional from rear pass membrane panel.
Claims (2)
1. a membrane panel smoking mouth swan neck system, its composition comprises: rear pass membrane panel, it is characterized in that: be equipped with to the bend pipe outside stove every a pitch in the middle part of described rear pass membrane panel, described bend pipe forms smoking mouth, outside described rear pass membrane panel stove, sealing bent plate is housed, outside described rear pass membrane panel stove, sealing plate is housed, the bend pipe on described rear pass membrane panel is equipped with wear strip.
2. one kind utilizes the mixed flue gas method of the membrane panel smoking mouth swan neck system described in claim 1, it is characterized in that: by high-temperature flue gas is extracted out to the bend pipe outside stove by membrane panel when this device uses, mix with the low-temperature flue gas of economizer bypass place, make mixed flue-gas temperature can reach flue-gas temperature needed for denitration, thus the denitration reaction of the flue gas entering denitrification apparatus can be carried out smoothly, by the NO in flue gas
xslough, solve the problem that need extract flue gas when equipment for denitrifying flue gas installs economizer bypass additional from rear pass membrane panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984095.XA CN105402746B (en) | 2015-12-24 | 2015-12-24 | Membrane panel smoking mouth swan neck system and mixed flue gas method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984095.XA CN105402746B (en) | 2015-12-24 | 2015-12-24 | Membrane panel smoking mouth swan neck system and mixed flue gas method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105402746A true CN105402746A (en) | 2016-03-16 |
| CN105402746B CN105402746B (en) | 2018-04-27 |
Family
ID=55468400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510984095.XA Active CN105402746B (en) | 2015-12-24 | 2015-12-24 | Membrane panel smoking mouth swan neck system and mixed flue gas method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105402746B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202452688U (en) * | 2012-02-06 | 2012-09-26 | 广州迪森家用锅炉制造有限公司 | Smoke discharge tube for gas-fired heating and hot water boiler or gas water heater |
| CN204063081U (en) * | 2014-04-15 | 2014-12-31 | 国家电网公司 | The flue structure that a kind of SCR flue gas denitrification system inlet flue gas temperature is adjustable |
| CN104759206A (en) * | 2015-03-31 | 2015-07-08 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitrification device provided with temperature-raising flue gas mixer |
| CN204710105U (en) * | 2015-02-04 | 2015-10-21 | 刘炎军 | A kind of full load equipment for denitrifying flue gas of Industrial Boiler |
| CN205351359U (en) * | 2015-12-24 | 2016-06-29 | 哈尔滨锅炉厂有限责任公司 | A diaphragm type wall tube panel smoking mouthful swan neck system |
-
2015
- 2015-12-24 CN CN201510984095.XA patent/CN105402746B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202452688U (en) * | 2012-02-06 | 2012-09-26 | 广州迪森家用锅炉制造有限公司 | Smoke discharge tube for gas-fired heating and hot water boiler or gas water heater |
| CN204063081U (en) * | 2014-04-15 | 2014-12-31 | 国家电网公司 | The flue structure that a kind of SCR flue gas denitrification system inlet flue gas temperature is adjustable |
| CN204710105U (en) * | 2015-02-04 | 2015-10-21 | 刘炎军 | A kind of full load equipment for denitrifying flue gas of Industrial Boiler |
| CN104759206A (en) * | 2015-03-31 | 2015-07-08 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitrification device provided with temperature-raising flue gas mixer |
| CN205351359U (en) * | 2015-12-24 | 2016-06-29 | 哈尔滨锅炉厂有限责任公司 | A diaphragm type wall tube panel smoking mouthful swan neck system |
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| Publication number | Publication date |
|---|---|
| CN105402746B (en) | 2018-04-27 |
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