CN220321358U - Novel air preheater - Google Patents
Novel air preheater Download PDFInfo
- Publication number
- CN220321358U CN220321358U CN202322284891.5U CN202322284891U CN220321358U CN 220321358 U CN220321358 U CN 220321358U CN 202322284891 U CN202322284891 U CN 202322284891U CN 220321358 U CN220321358 U CN 220321358U
- Authority
- CN
- China
- Prior art keywords
- section
- pressure condensing
- condensing section
- supercooling
- low
- 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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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004781 supercooling Methods 0.000 claims abstract description 27
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims description 4
- 239000010813 municipal solid waste Substances 0.000 abstract description 14
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 238000010248 power generation Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 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 discloses a novel air preheater, which is internally divided into a high-pressure condensing section, a low-pressure condensing section and a supercooling section from left to right, wherein the inlet of the high-pressure condensing section is connected with main steam, the outlet of the high-pressure condensing section is connected with the inlet of a water collection control tank, the water collection control tank is communicated with the supercooling section through a pipeline, saturated water is conveyed to the supercooling section through the pipeline by the water collection control tank, the supercooling section is used for cooling the saturated water, and the saturated water is conveyed into a deaerator by the supercooling section. And an inlet of the low-pressure condensing section is connected with an air outlet of the steam turbine, and the low-pressure condensing section is communicated with the deaerator. The air preheater after transformation improves the temperature of primary air, is favorable for drying, firing and burning garbage, thereby improving the combustion working condition in the furnace and reducing the burning rate of the fire grate.
Description
Technical Field
The utility model relates to the technical field of air preheaters, in particular to a novel air preheater.
Background
The low power generation heating value of part of the garbage means that the energy of combustible substances contained in the garbage is low, and heat which is high enough for power generation cannot be generated effectively. This situation may have a certain influence on the energy recovery system such as garbage incineration power generation.
The reason for the lower power generation heating value of the garbage may be the following:
composition of the waste: different components in the waste have different heating values. For example, organic waste (e.g., food waste) generally has a relatively high calorific value, while combustible waste such as paper, plastic, etc. has a relatively low calorific value.
The lower heating value of garbage power generation may have some influence on garbage disposal and energy recovery, including:
the power generation efficiency is lowered: the low heat value of the garbage power generation means that less heat energy is generated in the incineration process, so that enough steam cannot be generated to drive the generator, thereby reducing the power generation efficiency.
The energy recovery amount is reduced: low heating value waste means that the energy recovered from the waste is reduced. Energy recovery is one of the important targets of garbage disposal, and if the calorific value in garbage is low, the energy in garbage cannot be fully utilized.
The combustion process is more complex: during incineration, low heating value materials in the waste may cause unstable combustion conditions, and additional fuel or combustion auxiliary equipment may be required to maintain combustion temperature and stability.
The environmental impact increases: since more fuel is consumed to supplement the heat of the low heating value garbage, more exhaust gas and pollutants may be released during the incineration process, increasing adverse effects on the environment.
The economic benefit is reduced: low heating value waste may lead to reduced economic efficiency of the power plant. Because less energy is generated, the demand cannot be met, and additional fuel input or other ways to make up for the energy gap may be required.
Aiming at the condition that the heat value of the generated power of part of garbage is lower, in order to ensure the temperature of the flue gas and improve the incineration efficiency, the temperature of primary air can be improved by reforming the air preheater.
Disclosure of Invention
The utility model aims to solve the problems of the background art and provides a novel air preheater.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a novel air heater, from left to right divide into high pressure condensing section, low pressure condensing section and supercooling section in the air heater, the import of high pressure condensing section inserts main steam, the export of high pressure condensing section connects the import of catchment control jar, catchment control jar passes through pipeline and supercooling section intercommunication, catchment control jar passes through the pipeline with saturated water and carries extremely supercooling section, supercooling section is used for cooling down saturated water, supercooling section carries saturated water to the deoxidizer in.
As a further scheme of the utility model: and an inlet of the low-pressure condensing section is connected with an air outlet of the steam turbine, and the low-pressure condensing section is communicated with the deaerator.
The utility model has the beneficial effects that: the air preheater after transformation improves the temperature of primary air, is favorable for drying, firing and burning garbage, thereby improving the combustion working condition in the furnace and reducing the burning rate of the fire grate.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of the present utility model.
In the figure: 1. an air preheater; 101. a high pressure condensing section; 102. a low pressure condensing section; 103. a supercooling section; 2. a deaerator; 3. a water collection control tank.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the novel air preheater comprises an air preheater 1, wherein the inside of the air preheater 1 is divided into a high-pressure condensing section 101, a low-pressure condensing section 102 and a supercooling section 103 from left to right, the inlet of the high-pressure condensing section 101 is connected with main steam, the outlet of the high-pressure condensing section 101 is connected with the inlet of a water collection control tank 3, the water collection control tank 3 is communicated with the supercooling section 103 through a pipeline, the water collection control tank 3 conveys saturated water to the supercooling section 103 through a pipeline, the supercooling section 103 is used for cooling the saturated water, and the supercooling section 103 conveys the saturated water to the deaerator 2.
The inlet of the low-pressure condensing section 102 is connected to the air outlet of the steam turbine, and the low-pressure condensing section 102 is communicated with the deaerator 2.
The air preheater 1 is divided into a high-pressure condensing section 101, a low-pressure condensing section 102 and a supercooling section 103, the inlet of the high-pressure condensing section 101 is connected with high-temperature and high-pressure steam (main steam) from a steam drum, the outlet of the high-pressure condensing section is connected with a water collection control tank 3, saturated water from the water collection control tank 3 enters an inlet header of the supercooling section 103 at about 260 ℃, micro supercooling water with the temperature reduced to about 160 ℃ after the water is cooled is discharged, and then enters the deaerator 2 after passing through an outlet throttling depressurization orifice plate and a manual regulating valve.
The outlet temperature of the current air preheater is about 210 ℃, and the outlet temperature can be increased to be more than 240 ℃ through the upgrading of a hydrophobic system.
In another embodiment, the air preheater 1 is divided into a high-pressure condensing section 101, a low-pressure condensing section 102 and a supercooling section 103, the inlet of the high-pressure condensing section 101 is connected with high-temperature and high-pressure steam (main steam) from a steam drum, the outlet is connected with a water collection control tank 3, saturated water from the water collection control tank 3 enters an inlet header of the supercooling section 103 at about 260 ℃, micro supercooling water with the temperature reduced to about 160 ℃ after the drainage is cooled is introduced into a drainage main pipe after passing through an outlet throttling depressurization orifice plate and a manual regulating valve.
The outlet temperature of the current air preheater is about 210 ℃, and the outlet temperature can be increased to be more than 240 ℃ through the upgrading of a hydrophobic system.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All such equivalent changes and modifications as come within the scope of the following claims are intended to be embraced therein.
Claims (2)
1. The utility model provides a novel air preheater, its characterized in that, air heater (1) is interior from left to right to divide into high pressure condensing section (101), low pressure condensing section (102) and supercooling section (103), the import of high pressure condensing section (101) inserts main steam, the import of water collection control jar (3) is connected to the export of high pressure condensing section (101), water collection control jar (3) are through pipeline and supercooling section (103) intercommunication, water collection control jar (3) is with saturated water through pipeline transport extremely supercooling section (103), supercooling section (103) are used for cooling down saturated water, supercooling section (103) are with saturated water transport to deaerator (2) in.
2. The novel air preheater according to claim 1, wherein the inlet of the low-pressure condensing section (102) is connected to the air outlet of the steam turbine, and the low-pressure condensing section (102) is communicated with the deaerator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284891.5U CN220321358U (en) | 2023-08-24 | 2023-08-24 | Novel air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284891.5U CN220321358U (en) | 2023-08-24 | 2023-08-24 | Novel air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220321358U true CN220321358U (en) | 2024-01-09 |
Family
ID=89425071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322284891.5U Active CN220321358U (en) | 2023-08-24 | 2023-08-24 | Novel air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220321358U (en) |
-
2023
- 2023-08-24 CN CN202322284891.5U patent/CN220321358U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |