CN219588926U - Heat primary air cooling system of lean coal-to-bituminous coal boiler - Google Patents
Heat primary air cooling system of lean coal-to-bituminous coal boiler Download PDFInfo
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- CN219588926U CN219588926U CN202320808030.XU CN202320808030U CN219588926U CN 219588926 U CN219588926 U CN 219588926U CN 202320808030 U CN202320808030 U CN 202320808030U CN 219588926 U CN219588926 U CN 219588926U
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- primary air
- heat exchanger
- cooling system
- hot primary
- air cooling
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- 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
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a heat primary air cooling system of a lean coal-to-bituminous coal boiler, which comprises a turbine unit and a heat primary air pipe; the hot primary air pipe is provided with a heat exchanger component, and the steam turbine unit extends out to be connected with a condensation pipeline with the heat exchanger component. By adopting the hot primary air cooling system, the heat exchanger component is arranged on the hot primary air pipe, so that the temperature of the hot primary air is reduced to a safe range, and the safety of powder conveying and combustion is ensured.
Description
Technical Field
The utility model belongs to the technical field of boilers of thermal power units, and particularly relates to a heat primary air cooling system of a lean coal-to-bituminous coal boiler.
Background
In the field of thermal power generation, the boiler burns high-volatile bituminous coal, the combustion is more stable, the minimum stable combustion load can reach below 30% BMCR, and the requirements of current deep peak regulation and new energy consumption are met.
When the bituminous coal is burned, the lean coal pulverized coal boiler is limited by a hot air powder feeding design and the temperature of hot primary air is too high, so that a pulverized coal pipeline and a burner are easy to burn.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a heat primary air cooling system of a lean coal-to-bituminous coal boiler, so that the temperature of the heat primary air is reduced to a safe range, and the safety of powder conveying and combustion is ensured.
The utility model solves the problems by the following technical means:
a kind of lean coal changes the hot primary air cooling system of the bituminous coal boiler, including turbine group and hot primary air pipe; the hot primary air pipe is provided with a heat exchanger component, and the steam turbine unit is provided with a condensation pipeline connected with the heat exchanger component.
Further, the heat exchanger assembly includes a light pipe heat exchanger and a fin heat exchanger.
Further, the fin type heat exchanger is provided with a bypass valve.
Further, an acoustic soot blower is disposed at the location of the light pipe heat exchanger.
Further, an air cannon is disposed at the location of the fin heat exchanger.
Further, a waterway control valve is arranged on the condensate pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to a system for reducing the temperature of a hot primary air of a lean coal-to-bituminous coal boiler, which comprises a turbine unit and a hot primary air pipe; the hot primary air pipe is provided with a heat exchanger component, and the steam turbine unit is provided with a condensation pipeline connected with the heat exchanger component. By adopting the hot primary air cooling system, the heat exchanger component is arranged on the hot primary air pipe, so that the temperature of the hot primary air is reduced to a safe range, and the safety of powder conveying and combustion is ensured.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the embodiment discloses a system for reducing temperature of hot primary air of a lean coal-to-bituminous coal boiler, which comprises a turbine unit 1 and a hot primary air pipe 2; the hot primary air pipe is provided with a heat exchanger component, the steam turbine unit is provided with a condensate pipeline 6 connected with the heat exchanger component, and the condensate pipeline is provided with a waterway control valve through which water flow can be flexibly controlled.
The heat exchanger assembly comprises a light pipe type heat exchanger 4 and a fin type heat exchanger 7, and in the embodiment, a group of light pipe type heat exchangers and three groups of fin type heat exchangers are arranged.
In specific application, the condensed water led out from the turbine unit flows through the light pipe type heat exchanger and the fin type heat exchanger in sequence to exchange heat with the hot primary air, so that the hot primary air is cooled to a safe range. Preferably, the fin heat exchanger is provided with a bypass valve 8. Can be flexibly adjusted according to the temperature of the primary air, and ensures the reliable cooling of the hot primary air.
As a further improvement to the above technical solution, an acoustic wave soot blower 5 is arranged at the position of the light pipe type heat exchanger; an air cannon 3 is arranged at the position of the fin type heat exchanger. And (5) purging regularly to prevent dust accumulation and blockage.
Finally, it is 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 modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. A kind of lean coal changes the hot primary air cooling system of the bituminous coal boiler, including turbine group and hot primary air pipe; the method is characterized in that: the hot primary air pipe is provided with a heat exchanger component, and the steam turbine unit is provided with a condensation pipeline connected with the heat exchanger component.
2. The lean coal-to-bituminous coal boiler hot primary air cooling system according to claim 1, wherein: the heat exchanger assembly includes a light pipe heat exchanger and a fin heat exchanger.
3. The lean coal-to-bituminous coal boiler hot primary air cooling system according to claim 2, wherein: the fin type heat exchanger is provided with a bypass valve.
4. The lean coal-to-bituminous coal boiler hot primary air cooling system according to claim 3, wherein: an acoustic wave soot blower is arranged at the position of the light pipe type heat exchanger.
5. The lean coal-to-bituminous coal boiler hot primary air cooling system according to claim 4, wherein: an air cannon is arranged at the position of the fin type heat exchanger.
6. The lean coal-to-bituminous coal boiler hot primary air cooling system according to any one of claims 1 to 5, wherein: and a waterway control valve is arranged on the condensate pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320808030.XU CN219588926U (en) | 2023-04-13 | 2023-04-13 | Heat primary air cooling system of lean coal-to-bituminous coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320808030.XU CN219588926U (en) | 2023-04-13 | 2023-04-13 | Heat primary air cooling system of lean coal-to-bituminous coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219588926U true CN219588926U (en) | 2023-08-25 |
Family
ID=87689871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320808030.XU Active CN219588926U (en) | 2023-04-13 | 2023-04-13 | Heat primary air cooling system of lean coal-to-bituminous coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219588926U (en) |
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2023
- 2023-04-13 CN CN202320808030.XU patent/CN219588926U/en active Active
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