CN217154226U - Transformation system for improving powder feeding medium temperature of storage type powder making system by extracting high-temperature furnace smoke - Google Patents
Transformation system for improving powder feeding medium temperature of storage type powder making system by extracting high-temperature furnace smoke Download PDFInfo
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- CN217154226U CN217154226U CN202220939542.5U CN202220939542U CN217154226U CN 217154226 U CN217154226 U CN 217154226U CN 202220939542 U CN202220939542 U CN 202220939542U CN 217154226 U CN217154226 U CN 217154226U
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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
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- 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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Abstract
The utility model discloses a transformation system for improving the temperature of powder feeding medium of a middle storage type powder making system by pumping high-temperature furnace smoke, which comprises a mixing fan, a high-temperature furnace smoke pipeline, a low-temperature furnace smoke pipeline, a furnace smoke air box and a mixing furnace smoke pipeline; the outlet of the low-temperature furnace smoke pipeline and the outlet of the high-temperature furnace smoke pipeline are communicated with the inlet of a mixing fan after being connected in parallel through pipelines, the outlet of the mixing fan is communicated with the inlet of a furnace smoke wind box, the outlet of the furnace smoke wind box is divided into two paths, and one path is communicated with a powder feeding pipeline through the mixing furnace smoke pipeline; the other path is communicated with the inlet of the coal powder mixer, and the system can improve the stable combustion capacity of the boiler under the low-load working condition.
Description
Technical Field
The utility model relates to a reform transform system, concretely relates to take out transformation system of storage powder process system powder feeding medium temperature in high temperature flue gas improves.
Background
The method aims to solve the problem of wind and light abandonment which is increasingly serious, improve the consumption capability of new energy and improve the operation flexibility of the thermal power generating unit.
The general coal-fired unit boiler can ensure stable combustion under the working condition of 40-50% THA, but when the working condition of below 40% THA is in deep peak regulation operation, because the steam flow of the boiler is small, the coal-fired quantity is small, the flame fullness of a hearth is low, the temperature level of the hearth is low, and the combustion stability is poor. Therefore, the key for realizing deep peak shaving operation of the unit is to ensure the stable combustion of the boiler under low load.
For the coal-fired boiler equipped with the intermediate storage type exhaust gas powder feeding and pulverizing system, the temperature of the powder feeding medium is improved, and the combustion ignition heat can be effectively reduced. After accounting, if the temperature of the powder feeding medium can be increased, the combustion ignition heat will be reduced, and the stable combustion capability of the boiler under low load can be greatly improved, however, similar technical support is not provided in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a take out high temperature flue gas and improve transformation system of storage formula powder process system powder feeding medium temperature, this system can improve the steady ability of firing of boiler under the low-load operating mode.
In order to achieve the above object, the system for improving the temperature of the powder feeding medium of the middle storage type powder making system by extracting high-temperature furnace smoke of the utility model comprises a hot air adjusting door, a cold air adjusting door, a mixed air adjusting door, an exhaust air baffle, a powder discharging fan, an exhaust air bellow, a coal powder mixer, a burner and a powder feeding pipeline;
the hot air pipeline is communicated with the inlet of the mixed air adjusting door through a hot air adjusting door, the cold air pipeline is communicated with the inlet of the mixed air adjusting door through a cold air adjusting door, the outlet of the mixed air adjusting door is communicated with the inlet of the powder discharge fan through a pipeline and a pipe, the exhaust air pipeline is provided with an exhaust air baffle, the outlet of the powder discharge fan is communicated with the inlet of an exhaust air bellows, the outlet of the exhaust air bellows is divided into two paths, one path is communicated with the powder feeding pipeline mixer, and the other path is communicated with the combustor through coal powder;
comprises a mixing fan, a high-temperature furnace smoke pipeline, a low-temperature furnace smoke pipeline, a furnace smoke air box and a mixing furnace smoke pipeline;
the outlet of the low-temperature furnace smoke pipeline and the outlet of the high-temperature furnace smoke pipeline are communicated with the inlet of a mixing fan after being connected in parallel through pipelines, the outlet of the mixing fan is communicated with the inlet of a furnace smoke wind box, the outlet of the furnace smoke wind box is divided into two paths, and one path is communicated with a powder feeding pipeline through the mixing furnace smoke pipeline; the other path is communicated with the inlet of the coal powder mixer.
The low-temperature furnace smoke pipeline is provided with a low-temperature furnace smoke adjusting door.
The mixing furnace smoke pipeline is provided with a first valve.
The outlet of the furnace smoke wind box is communicated with the coal powder mixer through a second valve.
When the boiler operates under the low-load working condition and the temperature of the powder feeding medium needs to be increased to improve the stable combustion capacity, mixed furnace smoke output by the high-temperature furnace smoke pipeline and the low-temperature furnace smoke pipeline is extracted by the mixing fan, then the mixed furnace smoke is fed into the furnace smoke air box and then is fed into the powder feeding pipeline through the mixed furnace smoke pipeline to improve the temperature of the powder feeding medium in the powder feeding pipeline.
The utility model discloses following beneficial effect has:
take out transformation system of storage formula powder process system powder feeding medium temperature in high temperature flue gas improves when concrete operation, need improve powder feeding medium temperature when improving the ability of surely firing, then through the mixed fan extraction by the mixed flue gas of high temperature furnace tobacco pipe way and low temperature furnace tobacco pipe way output, then send into the powder feeding pipeline via the mixed flue gas pipe way to improve the temperature of sending the powder medium in sending the powder pipeline, the stability of reinforcing burning, moreover, the steam generator is simple in structure, high durability and convenient operation.
Drawings
FIG. 1 is a schematic diagram of a conventional pulverizing system;
fig. 2 is a schematic diagram of the present invention.
Wherein, 1 is a hot air adjusting door, 2 is a cold air adjusting door, 3 is a mixed air adjusting door, 4 is a waste air baffle, 5 is a powder discharging fan, 6 is a waste air bellows, 7 is a coal powder mixer, 8 is a burner, 9 is a powder feeding pipeline, 10 is a high-temperature furnace smoke pipeline, 11 is a low-temperature furnace smoke pipeline, 12 is a low-temperature furnace smoke adjusting door, 13 is a furnace smoke bellows, 14 is a mixed furnace smoke pipeline, and 15 is a mixed fan.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the pulverizing system comprises a hot air adjusting door 1, a cold air adjusting door 2, a mixed air adjusting door 3, a waste air baffle 4, a powder discharging fan 5, a waste air bellow 6, a coal powder mixer 7, a burner 8 and a powder feeding pipeline 9;
the hot air pipeline is communicated with the inlet of the mixed air adjusting door 3 through a hot air adjusting door 1, the cold air pipeline is communicated with the inlet of the mixed air adjusting door 3 through a cold air adjusting door 2, the outlet of the mixed air adjusting door 3 and the exhaust air pipeline are communicated with the inlet of a powder discharge fan 5 through a pipeline and a pipe, an exhaust air baffle 4 is arranged on the exhaust air pipeline, the outlet of the powder discharge fan 5 is communicated with the inlet of an exhaust air bellows 6, the outlet of the exhaust air bellows 6 is divided into two paths, one path is communicated with a powder feeding pipeline 9, and the other path is communicated with a combustor 8 through a coal powder mixer 7;
during work, the original powder making system before modification is an exhaust gas powder feeding system, is limited by explosion-proof requirements, and is controlled to be 65-70 ℃. When the powder making system operates, the exhaust fan 5 extracts exhaust gas to enter the exhaust gas bellows 6, and the extracted exhaust gas is adjusted by the exhaust gas baffle 4. The exhaust gas is distributed in an exhaust gas air box 6 and then enters a powder feeding pipeline 9, and after being mixed with the coal powder in a coal powder mixer 7, the coal powder enters a hearth through a combustor 8 to be combusted. When the powder making system does not operate in a short time and only needs to carry out powder feeding, the powder discharge fan 5 extracts hot air to enter the exhaust air bellows 6 to complete the subsequent powder feeding process. The amount of hot air extracted is adjusted by a mixed air adjusting door 3, and the temperature of the hot air is adjusted by a hot air adjusting door 1 and a cold air adjusting door 2 together.
Referring to fig. 2, the system for improving the temperature of the powder feeding medium of the high temperature furnace smoke extraction and middle storage type powder making system of the present invention comprises a high temperature furnace smoke pipeline 10, a low temperature furnace smoke pipeline 11, a low temperature furnace smoke regulating door 12, a furnace smoke box 13 and a mixing furnace smoke pipeline 14;
the outlet of the low-temperature furnace smoke pipeline 11 and the outlet of the high-temperature furnace smoke pipeline 10 are communicated with the inlet of a mixing fan 15 after being connected in parallel through pipelines, the outlet of the mixing fan 15 is communicated with the inlet of a furnace smoke wind box 13, the outlet of the furnace smoke wind box 13 is divided into two paths, and one path is communicated with a powder feeding pipeline 9 through a mixing furnace smoke pipeline 14; the other path is communicated with the inlet of the coal powder mixer 7;
wherein, a low-temperature furnace smoke adjusting door 12 is arranged on the low-temperature furnace smoke pipeline 11; the mixing furnace smoke pipeline 14 is provided with a first valve, and the outlet of the furnace smoke wind box 13 is communicated with the coal powder mixer 7 through a second valve.
The utility model discloses a concrete working process does:
when the boiler operates under the low-load working condition and the temperature of the powder feeding medium needs to be increased to improve the stable combustion capacity, mixed furnace smoke output by the high-temperature furnace smoke pipeline 10 and the low-temperature furnace smoke pipeline 11 is extracted by the mixing fan 15 and is fed into the furnace smoke air box 13. The proportion of high-temperature and low-temperature flue gas in the mixed flue gas is adjusted by a low-temperature flue gas adjusting door 12. The mixed furnace smoke distributed by the furnace smoke air box 13 is sent into the powder feeding pipeline 9 through the mixed furnace smoke pipeline 14, and the high-temperature mixed furnace smoke and the low-temperature exhaust gas are mixed in the powder feeding pipeline 9, so that the temperature of a powder feeding medium in the powder feeding pipeline 9 is increased, and the combustion stability is enhanced.
Claims (5)
1. A transformation system for improving the temperature of a powder feeding medium of a middle storage type powder making system by pumping high-temperature furnace smoke comprises a hot air adjusting door (1), a cold air adjusting door (2), a mixed air adjusting door (3), an exhaust air baffle (4), a powder discharging fan (5), an exhaust air bellow (6), a coal powder mixer (7), a burner (8) and a powder feeding pipeline (9);
the hot air pipeline is communicated with an inlet of the mixed air adjusting door (3) through the hot air adjusting door (1), the cold air pipeline is communicated with an inlet of the mixed air adjusting door (3) through the cold air adjusting door (2), an outlet of the mixed air adjusting door (3) and an exhaust air pipeline are communicated with an inlet of the powder exhaust fan (5) through a pipeline and a pipe, an exhaust air baffle (4) is arranged on the exhaust air pipeline, an outlet of the powder exhaust fan (5) is communicated with an inlet of an exhaust air bellows (6), an outlet of the exhaust air bellows (6) is divided into two paths, one path is communicated with the powder feeding pipeline (9), and the other path is communicated with the combustor (8) through a coal powder mixer (7);
it is characterized by comprising a mixing fan (15), a high-temperature furnace smoke pipeline (10), a low-temperature furnace smoke pipeline (11), a furnace smoke air box (13) and a mixing furnace smoke pipeline (14);
the outlet of the low-temperature furnace smoke pipeline (11) and the outlet of the high-temperature furnace smoke pipeline (10) are communicated with the inlet of a mixing fan (15) after being connected in parallel through pipelines, the outlet of the mixing fan (15) is communicated with the inlet of a furnace smoke air box (13), the outlet of the furnace smoke air box (13) is divided into two paths, and one path is communicated with a powder feeding pipeline (9) through a mixing furnace smoke pipeline (14); the other path is communicated with the inlet of the coal powder mixer (7).
2. The system for improving the temperature of the powder feeding medium of a storage pulverizing system by extracting high-temperature furnace smoke according to claim 1, wherein the low-temperature furnace smoke regulating door (12) is arranged on the low-temperature furnace smoke pipeline (11).
3. The system for improving the temperature of a powder feeding medium of a storage pulverizing system by extracting high-temperature furnace smoke according to claim 1, wherein the mixing furnace smoke pipeline (14) is provided with a first valve.
4. The system for improving the temperature of the powder feeding medium of a storage pulverizing system by extracting high-temperature furnace smoke according to claim 3, wherein the outlet of the furnace smoke wind box (13) is communicated with the coal powder mixer (7) through a second valve.
5. The system for improving the temperature of the powder feeding medium of the storage pulverizing system by extracting high-temperature furnace smoke according to claim 1, wherein when the boiler is operated under low-load condition and the temperature of the powder feeding medium needs to be improved to improve the stable combustion capability during operation, the mixed furnace smoke output from the high-temperature furnace smoke pipeline (10) and the low-temperature furnace smoke pipeline (11) is extracted by the mixing fan (15), then the mixed furnace smoke is fed into the furnace smoke box (13), and then the mixed furnace smoke is fed into the powder feeding pipeline (9) through the mixed furnace smoke pipeline (14) to improve the temperature of the powder feeding medium in the powder feeding pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220939542.5U CN217154226U (en) | 2022-04-21 | 2022-04-21 | Transformation system for improving powder feeding medium temperature of storage type powder making system by extracting high-temperature furnace smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220939542.5U CN217154226U (en) | 2022-04-21 | 2022-04-21 | Transformation system for improving powder feeding medium temperature of storage type powder making system by extracting high-temperature furnace smoke |
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| Publication Number | Publication Date |
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| CN217154226U true CN217154226U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220939542.5U Active CN217154226U (en) | 2022-04-21 | 2022-04-21 | Transformation system for improving powder feeding medium temperature of storage type powder making system by extracting high-temperature furnace smoke |
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| CN (1) | CN217154226U (en) |
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- 2022-04-21 CN CN202220939542.5U patent/CN217154226U/en active Active
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