CN219693224U - Premixing low-nitrogen steam generator - Google Patents
Premixing low-nitrogen steam generator Download PDFInfo
- Publication number
- CN219693224U CN219693224U CN202222763355.9U CN202222763355U CN219693224U CN 219693224 U CN219693224 U CN 219693224U CN 202222763355 U CN202222763355 U CN 202222763355U CN 219693224 U CN219693224 U CN 219693224U
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- premixing
- heat exchange
- air
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003546 flue gas Substances 0.000 claims abstract description 32
- 239000002737 fuel gas Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000002912 waste gas Substances 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model provides a premixing low-nitrogen steam generator, which comprises: the gas-air mixing device comprises a premixing mechanism, a combustion heat exchange mechanism and a flue gas condensing mechanism, wherein the premixing mechanism mixes gas and air and sends the gas and air into the combustion heat exchange mechanism; the combustion heat exchange mechanism comprises: the gas and air are mixed and then enter the combustion chamber to burn, and the heat exchange device exchanges heat in the combustion chamber to heat water and generate steam; the flue gas condensing mechanism receives the waste gas generated in the combustion chamber and performs cooling treatment; further comprises: and the premixing mechanism is connected to the air preheating mechanism. According to the utility model, the pre-mixed air is used for carrying out the pre-heating treatment, so that the mixing effect of the air and the fuel gas is improved, and meanwhile, the mixed fuel gas with higher temperature enters the combustion chamber, so that the combustion stability in the combustion chamber can be improved.
Description
Technical Field
The utility model relates to the field of steam generator equipment, in particular to a premixing low-nitrogen steam generator.
Background
The utility model discloses a premixing low-nitrogen steam generator, which integrates combustion and heat exchange into a whole, controls the combustion temperature through a medium in a heat exchange tube, the temperature in the existing steam generator is also influenced by the air temperature, the mixing effect of air and fuel gas is greatly influenced by the temperature, and the combustion in the combustion chamber is unstable.
Disclosure of Invention
In view of the foregoing background, the present utility model provides a premixed low-nitrogen steam generator, including: a premixing mechanism, a combustion heat exchange mechanism and a flue gas condensing mechanism,
the premixing mechanism mixes the fuel gas with air and sends the fuel gas and the air into the combustion heat exchange mechanism;
the combustion heat exchange mechanism comprises: the gas and air are mixed and then enter the combustion chamber to be combusted, and the heat exchange device exchanges heat in the combustion chamber to heat water and generate steam;
the flue gas condensing mechanism receives the waste gas generated in the combustion chamber and performs cooling treatment;
further comprises: and the premixing mechanism is connected to the air preheating mechanism.
As a preferred embodiment of the present utility model, the premixing mechanism includes: the gas-fired boiler comprises a premixing box and a premixing fan, wherein a first end of the premixing box is connected with a gas pipe, a second end of the premixing box is connected to the combustion chamber through a butt joint pipe, a fireproof valve is arranged in the butt joint pipe, and the premixing fan is arranged on the side of the premixing box.
As a preferred embodiment of the present utility model, the heat exchange device includes: the heat exchange device comprises an upper water collecting pipe, a lower water collecting pipe, heat exchange pipes and a steam drum, wherein the upper water collecting pipe and the lower water collecting pipe are respectively provided with a plurality of heat exchange pipes which are respectively arranged on the upper side and the lower side of the combustion chamber, the heat exchange pipes are vertically arranged in the combustion chamber, and the upper end and the lower end of each heat exchange pipe respectively penetrate through the combustion chamber and are respectively communicated with the upper water collecting pipe and the lower water collecting pipe.
As a preferable scheme of the utility model, the flue gas condensing mechanism is arranged on the right side of the combustion chamber, the flue gas condensing mechanism is communicated with the combustion chamber, a heat exchange condensing pipe is arranged in the flue gas condensing mechanism, two sides of the flue gas condensing mechanism are respectively connected to the front end and the rear end of the lower water collecting pipe through a first water pump and a third water pump, a second water pump is also arranged on the front side of the flue gas condensing mechanism, and the first water pump, the second water pump and the third water pump are all controlled through a control system.
As a preferable scheme of the utility model, the steam drum 8 is provided with a liquid level meter, a steam outlet and a safety valve.
As a preferable scheme of the utility model, the air preheating mechanism comprises a preheating pipe, an exhaust port is arranged at the top of the flue gas condensing mechanism, the preheating pipe penetrates through the exhaust port, and the end part of the preheating pipe is communicated with the premixing fan.
Compared with the prior art, the utility model provides the premixed low-nitrogen steam generator, which has the following beneficial effects:
1. according to the utility model, the pre-mixed air is used for carrying out the pre-heating treatment, so that the mixing effect of the air and the fuel gas is improved, and meanwhile, the mixed fuel gas with higher temperature enters the combustion chamber, so that the combustion stability in the combustion chamber can be improved.
2. According to the utility model, the waste heat at the smoke discharge port is utilized to heat the air and the air is mixed with the fuel gas through the premixing fan, so that the energy utilization rate is improved.
Drawings
Fig. 1 is a schematic perspective view of the front side of a premixed low nitrogen vapor generator.
Fig. 2 is a schematic perspective view of the rear side of a premixed low nitrogen vapor generator.
Wherein: 1-a premix tank; 2-premixing a fan; 3-interfacing tube; 4-preheating pipes; 5-combustion chamber; 6-an upper water collecting pipe; 7-a lower water collecting pipe; 8-steam drum; 9-a flue gas condensing mechanism; 901-an exhaust port; 10-a first water pump; 11-a second water pump; 12-a third water pump.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
As shown in fig. 1-2, the present utility model provides a premix low nitrogen steam generator comprising: premixing mechanism, burning heat transfer mechanism, flue gas condensation mechanism still include: and the premixing mechanism is connected to the air preheating mechanism. According to the utility model, the pre-mixed air is subjected to pre-heating treatment, so that the mixing effect of the air and the fuel gas is improved, meanwhile, the mixed fuel gas with higher temperature enters the combustion chamber, so that the combustion stability in the combustion chamber can be improved, and meanwhile, the waste heat at the smoke discharge port is utilized to heat the air and mix the air with the fuel gas through the pre-mixed fan, so that the energy utilization rate is improved.
The premixing mechanism mixes fuel gas and air and sends the fuel gas and the air into the combustion heat exchange mechanism, and the premixing mechanism comprises: the gas-fired boiler comprises a premixing box 1 and a premixing fan 2, wherein a first end of the premixing box 1 is connected with a gas pipe, a second end of the premixing box 1 is connected to a combustion chamber 5 through a butt joint pipe 3, a fireproof valve is arranged in the butt joint pipe 3, and the premixing fan 2 is arranged on the side of the premixing box 1.
The combustion heat exchange mechanism of the present utility model comprises: combustion chamber 5, heat transfer device, gas and air enter into combustion chamber 5 after mixing and burn in, heat transfer device carries out the heat transfer in the combustion chamber, heats water and produces steam, and heat transfer device includes: the upper water collecting pipe 6, the lower water collecting pipe 7, the heat exchange pipe and the steam drum 8 are respectively provided with a plurality of upper water collecting pipes 6 and lower water collecting pipes 7 which are respectively arranged on the upper side and the lower side of the combustion chamber 5, the heat exchange pipe is provided with a plurality of groups of heat exchange pipes which are vertically arranged in the combustion chamber 5, and the upper end and the lower end of the heat exchange pipe respectively penetrate through the combustion chamber 5 and are respectively communicated with the upper water collecting pipe 6 and the lower water collecting pipe 7. The steam drum 8 is provided with a liquid level meter, a steam outlet and a safety valve, wherein the safety valve, the steam outlet and the liquid level meter on the steam drum 8 are arranged on the current steam generator.
The flue gas condensing mechanism receives the waste gas generated in the combustion chamber 5 and carries out cooling treatment, the flue gas condensing mechanism is arranged on the right side of the combustion chamber 5 and is communicated with the combustion chamber 5, a heat exchange condensing pipe is arranged in the flue gas condensing mechanism, two sides of the flue gas condensing mechanism are respectively connected to the front end and the rear end of the lower water collecting pipe 7 through a first water pump 10 and a third water pump 12, a second water pump 11 is also arranged on the front side of the flue gas condensing mechanism, and the first water pump 10, the second water pump 11 and the third water pump 12 are all controlled through a control system; the second water pump 11 controls external water supplementing to enter the flue gas condensing mechanism, the first water pump controls water in the lower water collecting pipe 6 to enter the flue gas condensing mechanism, and the third water pump 12 controls water in the flue gas condensing mechanism to enter the lower water collecting pipe 6.
The air preheating mechanism of the utility model specifically comprises a preheating pipe 4, an exhaust port 901 is arranged at the top of a flue gas condensing mechanism 9, the preheating pipe 4 penetrates through the exhaust port 901, and the end part of the preheating pipe is communicated with a premixing fan 2.
The outside water inlet enters the flue gas condensing mechanism through the second water pump 11, flows into the combustion chamber 5 through the third water pump after preliminary heat exchange, then is recycled back into the flue gas condensing mechanism after heat exchange in the combustion chamber 5, ensures that the temperature in the combustion chamber is stable, the liquid level is detected through the liquid level meter, the liquid level can be controlled through the second water pump 11, the first water pump 10 and the third water pump 12, the water in the heat exchange pipe is at about 80 ℃, the flue gas in the combustion chamber 5 and the heat exchange pipe enable the water therein to be changed into steam after heat exchange to rise through the upper water collecting pipe to enter the steam drum, and the steam is output through the steam outlet.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.
Claims (6)
1. A premix low nitrogen steam generator comprising: a premixing mechanism, a combustion heat exchange mechanism and a flue gas condensing mechanism,
the premixing mechanism mixes the fuel gas with air and sends the fuel gas and the air into the combustion heat exchange mechanism;
the combustion heat exchange mechanism comprises: the combustion device comprises a combustion chamber (5) and a heat exchange device, wherein fuel gas and air are mixed and then enter the combustion chamber (5) for combustion, and the heat exchange device exchanges heat in the combustion chamber, heats water and generates steam;
the flue gas condensing mechanism receives waste gas generated in the combustion chamber (5) and performs cooling treatment;
characterized by further comprising: and the premixing mechanism is connected to the air preheating mechanism.
2. The premix low nitrogen steam generator of claim 1, wherein said premixing mechanism comprises: the gas-fired boiler comprises a premixing box (1) and a premixing fan (2), wherein a first end of the premixing box (1) is connected with a gas pipe, a second end of the premixing box (1) is connected to a combustion chamber (5) through a butt joint pipe (3) to be communicated, a fireproof valve is installed in the butt joint pipe (3), and the premixing fan (2) is installed on the side of the premixing box (1).
3. A premix low nitrogen steam generator as in claim 2, wherein said heat exchange means comprises: go up collector tube (6), collector tube (7), heat exchange tube, steam drum (8) down, go up collector tube (6) and collector tube (7) branch down all have many install respectively the upper and lower both sides of combustion chamber (5), the heat exchange tube has the multiunit to install vertically in combustion chamber (5), the upper and lower both ends of heat exchange tube run through combustion chamber (5) respectively and with last collector tube (6), collector tube (7) intercommunication down respectively.
4. A premixed low-nitrogen steam generator according to claim 3, wherein the flue gas condensing mechanism is arranged on the right side of the combustion chamber (5), the flue gas condensing mechanism is communicated with the combustion chamber (5), a heat exchange condensing pipe is arranged in the flue gas condensing mechanism, two sides of the flue gas condensing mechanism are connected to the front end and the rear end of the lower water collecting pipe (7) through a first water pump (10) and a third water pump (12) respectively, a second water pump (11) is further arranged on the front side of the flue gas condensing mechanism, and the first water pump (10), the second water pump (11) and the third water pump (12) are controlled through a control system.
5. A premix low nitrogen steam generator as in claim 4, wherein said drum (8) is provided with a level gauge, a steam outlet, a safety valve.
6. The premixed low-nitrogen steam generator according to claim 5, wherein the air preheating mechanism comprises a preheating pipe (4), an exhaust port (901) is formed in the top of the flue gas condensing mechanism (9), the preheating pipe (4) penetrates through the exhaust port (901), and the end of the preheating pipe is communicated with the premixing fan (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763355.9U CN219693224U (en) | 2022-10-20 | 2022-10-20 | Premixing low-nitrogen steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763355.9U CN219693224U (en) | 2022-10-20 | 2022-10-20 | Premixing low-nitrogen steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219693224U true CN219693224U (en) | 2023-09-15 |
Family
ID=87964133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222763355.9U Active CN219693224U (en) | 2022-10-20 | 2022-10-20 | Premixing low-nitrogen steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219693224U (en) |
-
2022
- 2022-10-20 CN CN202222763355.9U patent/CN219693224U/en active Active
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