CN103438474B - The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system - Google Patents
The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system Download PDFInfo
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- CN103438474B CN103438474B CN201310414777.8A CN201310414777A CN103438474B CN 103438474 B CN103438474 B CN 103438474B CN 201310414777 A CN201310414777 A CN 201310414777A CN 103438474 B CN103438474 B CN 103438474B
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Abstract
The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system, its a kind of utilization system, is specifically related to the weary gas of a kind of boiler milling system part and participates in pulverized coal carried by hot air utilization system.The present invention in order to after solving intermediate storage-type pulverized coal preparation system blending coal slime at high proportion, the problem that ature of coal moisture is higher.The present invention includes warm-air pipe, coal, pulverulent fuel mixer, primary air piping, wear resistance ceramic tube, header, the liaison tube of recirculation and header and recirculation pipe, warm-air pipe is connected with coal, pulverulent fuel mixer air inlet, the air outlet of coal, pulverulent fuel mixer is connected with primary air piping, warm-air pipe is connected with header by wear resistance ceramic tube, and header is connected with recirculation pipe with the liaison tube of header by recirculation.The present invention is used for boiler powder process field.
Description
Technical field
The present invention relates to a kind of utilization system, be specifically related to the weary gas of a kind of boiler milling system part and participate in pulverized coal carried by hot air utilization system.
Background technology
Existing intermediate storage-type pulverized coal preparation system is only suitable for bituminous coal and ature of coal total moisture is the coal of 5.2%, and when arriving 12% for ature of coal total moisture, drying capacity of pulverizer and ventilation are exerted oneself and occurred wretched insufficiency phenomenon; And existing pulverized coal preparation system tertiary air pressure is higher, causes tertiary-air velocity to strengthen, tertiary-air pipe wearing and tearing aggravation, high speed tertiary air will cause furnace flame center to move down, impact burning.
Summary of the invention
The present invention is after solving intermediate storage-type pulverized coal preparation system blending coal slime at high proportion, the problem that ature of coal moisture is higher, and then proposes boiler milling system part weary gas participation pulverized coal carried by hot air utilization system.
The present invention is the technical scheme taked that solves the problem: the present invention includes warm-air pipe, coal, pulverulent fuel mixer, primary air piping, wear resistance ceramic tube, header, the liaison tube of recirculation and header and recirculation pipe, warm-air pipe is connected with coal, pulverulent fuel mixer air inlet, the air outlet of coal, pulverulent fuel mixer is connected with primary air piping, warm-air pipe is connected with header by wear resistance ceramic tube, and header is connected with recirculation pipe with the liaison tube of header by recirculation.
The invention has the beneficial effects as follows: invention increases First air band powder amount, flame kernel improves, overheavy firing, reduce furnace outlet oxygen content, decrease chemical and that machinery is imperfect combustion heat loss, reduce unburned carbon in flue dust, reduce heating surface wear, reduce blower fan power consumption, improve boiler efficiency; The present invention reduces powder process tertiary air pressure, reduces the wearing and tearing of tertiary-air pipe and recirculating line, improves mill exhauster operating condition, improve coal pulverizer inlet negative pressure, increase the input of dry-heat air, avoid and regulate desiccant temperature with cold wind, powder process is leaked out few, improves Mill output; The present invention is owing to enhancing burning, furnace outlet gas temperature is greatly improved, water-cooling wall, front screen, rear screen, finishing superheater, reheater caloric receptivity increases, main reheater temperature is improved, simultaneously because evaporation capacity improves, the tube wall of front and back screen finishing superheater is cooled, is reduced the generation of overtemperature of tube wall; Due to the raising of steam initial temperature, steam efficiency is improved, reduce the corrosion to last stage vane of steam turbine.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, the weary gas of boiler milling system part described in present embodiment participates in pulverized coal carried by hot air utilization system and comprises warm-air pipe 1, coal, pulverulent fuel mixer 2, primary air piping 3, wear resistance ceramic tube 4, header 6, the liaison tube 7 of recirculation and header and recirculation pipe 9, warm-air pipe 1 is connected with coal, pulverulent fuel mixer 2 air inlet, the air outlet of coal, pulverulent fuel mixer 2 is connected with primary air piping 3, warm-air pipe 1 is connected with header 6 by wear resistance ceramic tube 4, and header 6 is connected with recirculation pipe 9 with the liaison tube 7 of header by recirculation.
Detailed description of the invention two: composition graphs 1 illustrates present embodiment, the weary gas of boiler milling system part described in present embodiment participates in pulverized coal carried by hot air utilization system and also comprises the first Circular ventilation door 5 and the second Circular ventilation door 8, first Circular ventilation door 5 is arranged on wear resistance ceramic tube 4, and the second Circular ventilation door 8 is arranged on recirculation with on the liaison tube 7 of header.Other composition and annexation identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 illustrates present embodiment, the diameter that the weary gas of boiler milling system part described in present embodiment participates in the warm-air pipe 1 of pulverized coal carried by hot air utilization system is 480mm, the thickness of pipe wall of warm-air pipe 1 is 3mm, the diameter of primary air piping 3 is 450mm, the thickness of pipe wall of primary air piping 3 is 10mm, and the diameter of wear resistance ceramic tube 4 is 325mm, and the thickness of pipe wall of wear resistance ceramic tube 4 is 8mm, the diameter of recirculation pipe 9 is 720mm, and the thickness of pipe wall of recirculation pipe 9 is 5mm.Other composition and annexation identical with detailed description of the invention one.
Claims (1)
1. the weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system, it comprises warm-air pipe (1), coal, pulverulent fuel mixer (2), primary air piping (3), wear resistance ceramic tube (4), header (6), the liaison tube (7) of recirculation and header and recirculation pipe (9), warm-air pipe (1) is connected with coal, pulverulent fuel mixer (2) air inlet, the air outlet of coal, pulverulent fuel mixer (2) is connected with primary air piping (3), warm-air pipe (1) is connected with header (6) by wear resistance ceramic tube (4), header (6) is connected with recirculation pipe (9) with the liaison tube (7) of header by recirculation, described system also comprises the first Circular ventilation door (5) and the second Circular ventilation door (8), first Circular ventilation door (5) is arranged on wear resistance ceramic tube (4), second Circular ventilation door (8) is arranged on recirculation with on the liaison tube (7) of header, it is characterized in that: the diameter of warm-air pipe (1) is 480mm, the thickness of pipe wall of warm-air pipe (1) is 3mm, the diameter of primary air piping (3) is 450mm, the thickness of pipe wall of primary air piping (3) is 10mm, the diameter of wear resistance ceramic tube (4) is 325mm, the thickness of pipe wall of wear resistance ceramic tube (4) is 8mm, the diameter of recirculation pipe (9) is 720mm, the thickness of pipe wall of recirculation pipe (9) is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310414777.8A CN103438474B (en) | 2013-09-12 | 2013-09-12 | The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310414777.8A CN103438474B (en) | 2013-09-12 | 2013-09-12 | The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system |
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| Publication Number | Publication Date |
|---|---|
| CN103438474A CN103438474A (en) | 2013-12-11 |
| CN103438474B true CN103438474B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310414777.8A Active CN103438474B (en) | 2013-09-12 | 2013-09-12 | The weary gas of boiler milling system part participates in pulverized coal carried by hot air utilization system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556026B (en) * | 2015-09-30 | 2019-10-11 | 邸生才 | Air delivery pipe coal dust weight measurement instrument and multiple pipeline equilibrium powder supply control systems |
| CN111748395A (en) * | 2020-07-02 | 2020-10-09 | 煤科院节能技术有限公司 | Method for preparing coal powder by using coal slime |
| CN113154433B (en) * | 2021-05-28 | 2023-02-21 | 西安热工研究院有限公司 | Power station boiler negative pressure cooperative control method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0327914A2 (en) * | 1988-02-08 | 1989-08-16 | General Signal Corporation | Calorimetry system |
| CN101596980A (en) * | 2009-06-24 | 2009-12-09 | 哈尔滨工业大学 | Hot blast and exhaust gas double-medium powder delivery method and weary gas and hot air mixer |
| CN201589289U (en) * | 2010-02-05 | 2010-09-22 | 哈尔滨工业大学 | Exhaust gas and hot air double-medium powder delivery system |
-
2013
- 2013-09-12 CN CN201310414777.8A patent/CN103438474B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0327914A2 (en) * | 1988-02-08 | 1989-08-16 | General Signal Corporation | Calorimetry system |
| CN101596980A (en) * | 2009-06-24 | 2009-12-09 | 哈尔滨工业大学 | Hot blast and exhaust gas double-medium powder delivery method and weary gas and hot air mixer |
| CN201589289U (en) * | 2010-02-05 | 2010-09-22 | 哈尔滨工业大学 | Exhaust gas and hot air double-medium powder delivery system |
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| CN103438474A (en) | 2013-12-11 |
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