CN101936537B - Boiler powder generation system for burning lignite in power station gas duct and cooling tower machine - Google Patents
Boiler powder generation system for burning lignite in power station gas duct and cooling tower machine Download PDFInfo
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- CN101936537B CN101936537B CN2010105011574A CN201010501157A CN101936537B CN 101936537 B CN101936537 B CN 101936537B CN 2010105011574 A CN2010105011574 A CN 2010105011574A CN 201010501157 A CN201010501157 A CN 201010501157A CN 101936537 B CN101936537 B CN 101936537B
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- black furnace
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- cigarette
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- 239000003077 lignite Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 title abstract description 4
- 238000001816 cooling Methods 0.000 title abstract 5
- 239000000428 dust Substances 0.000 claims abstract description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 31
- 239000000779 smoke Substances 0.000 claims description 23
- 238000003801 milling Methods 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a boiler powder generation system for burning lignite in a power station gas duct and cooling tower machine, which relates to a boiler powder generation system. The aim of the invention is to solve the problem that lignite in a bitumite-combusting boiler in the conventional thermal power generation causes a great safety hazards. An outlet end of a first pipe is communicated with a gas duct and cooling tower through a dust collector for electrical appliances and a draught fan in turn; the inlet end of a cold boiler gas duct is communicated with the first pipe; the communication part of the cold boiler gas duct and the first pipe is positioned between the draught fan and the gas duct and cooling tower; a cold boiler gas insulating baffle plate and a cold boiler gas regulating baffle plate are arranged from the inlet end of the cold boiler gas duct to the outlet of the cold boiler gas duct in turn; the outlet end of the cold boiler gas duct is communicated with an inlet air duct; the outlet end of the inlet air duct is communicated with the inlet end of a primary fan; the outlet end of the primary fan is communicated with the inlet end of a second pipe; and the outlet end of the second pipe is communicated with the cold end of an air preheater. The invention is used in technology for burning lignite in the power station gas duct and cooling tower machine.
Description
Technical field
The present invention relates to a kind of boiler milling system.
Background technology
Along with the variation of coal market, more and more enterprises can't obtain enough design coals in recent years, must replenish a large amount of brown coal.Because brown coal have than high-volatile, easily catch fire, the characteristics that burning-point is low, especially when entering coal pulverizer high temperature inlet, easilier catch fire, explode, exist great potential safety hazard so the method for operation of burning brown coal is mixed by present thermal power generation corporations, based on this consideration, must carry out necessary transformation to boiler milling system, to satisfy the long-run development of enterprise.Some thermal power generation corporations are located in extremely frigid zones simultaneously, and winter operation is also being undertaken the task to social heat supply, and whether the safety of boiler winter operation, are directly connected to the stable of regional resident.
Summary of the invention
The objective of the invention is to use bituminous coal fired boiler in the thermal power generation and mix the problem that burning brown coal exists great potential safety hazard, proposed a kind of boiler milling system that power station cigarette tower unification unit is mixed burning brown coal that is used in order to solve.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: described system comprises air preheater, the electrical equipment dust arrester, air-introduced machine, the cigarette tower, primary air fan, primary air fan inlet air channel, first pipeline and second pipeline, the black furnace flue gas body port of export of boiler is communicated with the arrival end of first pipeline by the hot junction of air preheater, the port of export of first pipeline is communicated with the cigarette tower by electrical equipment dust arrester and air-introduced machine successively, described system also comprises black furnace cigarette isolating baffle, black furnace cigarette controllable register and black furnace smoke pipe road, the arrival end in black furnace smoke pipe road and first pipeline connection, black furnace smoke pipe road is communicated with the place between air-introduced machine and cigarette tower with first pipeline, be provided with black furnace cigarette isolating baffle and black furnace cigarette controllable register in the black furnace smoke pipe road successively from arrival end to the port of export, the port of export in black furnace smoke pipe road is communicated with the inlet air channel, the port of export in inlet air channel is communicated with the arrival end of primary air fan, the port of export of primary air fan is communicated with the arrival end of second pipeline, and the port of export of second pipeline is communicated with the cold junction of air preheater.
The present invention has following beneficial effect: 1. the present invention utilizes air-introduced machine to extract the low temperature of boiler discharge, low dust black furnace flue gas body, wherein black furnace flue gas body is replenishing drying medium in the pulverized coal preparation system, improve the pulverized coal preparation system drying simultaneously and exert oneself, increased the boiler milling system safety in operation; 2. utilize the high characteristics of inert media content in the black furnace flue gas body, reduced the terminal oxygen content of pulverized coal preparation system, because the protection of inert gas, brown coal are nonflammable, reduced the possibility of blast, increased the boiler milling system safety in operation; 3. the present invention has simple in structurely, and operation expense is cheap, and system is reliable, advantage that can long-time running.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, the system of present embodiment comprises air preheater 2, electrical equipment dust arrester 3, air-introduced machine 4, cigarette tower 5, primary air fan 6, primary air fan inlet air channel 7, first pipeline 11 and second pipeline 12, the black furnace flue gas body port of export of boiler 1 is communicated with the arrival end of first pipeline 11 by the hot junction of air preheater 2, the port of export of first pipeline 11 is communicated with cigarette tower 5 by electrical equipment dust arrester 3 and air-introduced machine 4 successively, described system also comprises black furnace cigarette isolating baffle 8, black furnace cigarette controllable register 9 and black furnace smoke pipe road 10, the arrival end in black furnace smoke pipe road 10 is communicated with first pipeline 11, black furnace smoke pipe road 10 is communicated with the place between air-introduced machine 4 and cigarette tower 5 with first pipeline 11, black furnace smoke pipe road 10 interior black furnace cigarette isolating baffle 8 and the black furnace cigarette controllable registers 9 of being provided with successively from arrival end to the port of export, the port of export in black furnace smoke pipe road 10 is communicated with inlet air channel 7, the port of export in inlet air channel 7 is communicated with the arrival end of primary air fan 6, the port of export of primary air fan 6 is communicated with the arrival end of second pipeline 12, and the port of export of second pipeline 12 is communicated with the cold junction of air preheater 2.Wherein the cold side outlet of air preheater 2 is communicated with the inlet of coal pulverizer.
10 low-temperature furnace smokes that extract mix after air preheater 2 enters coal pulverizer with the cold wind of primary air fan 6 inlets through black furnace smoke pipe road, this structure has been utilized the high advantage of air preheater 2 inlet medium temperatures, the cold side metal temperature of air preheater 2 improves, and will slow down the corrosion of air preheater 2 cold side metal; The reduction of the raising of coal pulverizer outlet temperature and coal pulverizer wind powder mixture moisture content will improve the boiler coal-ash ignition condition, help the raising of boiler combustion efficiency.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the black furnace smoke pipe road 10 of present embodiment is a carbon steel piping; Black furnace cigarette isolating baffle 8 and black furnace cigarette controllable register 9 are outsourcing piece, select according to black furnace smoke pipe road 10.Other composition and annexation are identical with the specific embodiment one.
Operation principle: the black furnace flue gas body that boiler 1 is discharged enters first pipeline 11, utilize the high advantage of air-introduced machine 4 discharge heads, a part of black furnace cigarette is sent into black furnace smoke pipe road 10, another part enters in the cigarette tower 5, the black furnace flue gas body that enters black furnace smoke pipe road 10 with enter primary air fan 6 after the cold wind that is entered by inlet air channel 7 mixes, the port of export by primary air fan 6 enters second pipeline 12, enters coal pulverizer through air preheater 2.Establish black furnace cigarette isolating baffle 8 and black furnace cigarette controllable register 9 in black furnace smoke pipe road 10, purpose is to strengthen reliability of system operation and control characteristic; Wherein utilize the outlet blast of air-introduced machine 4, overcome the resistance of the cold smoke pipeline of increase, realize replenishing the boiler milling system drying medium.
Claims (2)
1. one kind is used for the boiler milling system that power station cigarette tower unification unit is mixed burning brown coal, described system comprises air preheater (2), electrical equipment dust arrester (3), air-introduced machine (4), cigarette tower (5), primary air fan (6), primary air fan inlet air channel (7), first pipeline (11) and second pipeline (12), the black furnace flue gas body port of export of boiler (1) is communicated with the arrival end of first pipeline (11) by the hot junction of air preheater (2), the port of export of first pipeline (11) is communicated with cigarette tower (5) by electrical equipment dust arrester (3) and air-introduced machine (4) successively, it is characterized in that described system also comprises black furnace cigarette isolating baffle (8), black furnace cigarette controllable register (9) and black furnace smoke pipe road (10), the arrival end in black furnace smoke pipe road (10) is communicated with first pipeline (11), black furnace smoke pipe road (10) is positioned between air-introduced machine (4) and the cigarette tower (5) with the place of connection of first pipeline (11), interior black furnace cigarette isolating baffle (8) and the black furnace cigarette controllable register (9) of being provided with successively from arrival end to the port of export in black furnace smoke pipe road (10), the port of export in black furnace smoke pipe road (10) is communicated with inlet air channel (7), the port of export in inlet air channel (7) is communicated with the arrival end of primary air fan (6), the port of export of primary air fan (6) is communicated with the arrival end of second pipeline (12), and the port of export of second pipeline (12) is communicated with the cold junction of air preheater (2).
2. unify the boiler milling system that unit is mixed burning brown coal according to the described power station cigarette tower that is used for of claim 1, it is characterized in that black furnace smoke pipe road (10) is a carbon steel piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105011574A CN101936537B (en) | 2010-10-09 | 2010-10-09 | Boiler powder generation system for burning lignite in power station gas duct and cooling tower machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105011574A CN101936537B (en) | 2010-10-09 | 2010-10-09 | Boiler powder generation system for burning lignite in power station gas duct and cooling tower machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101936537A CN101936537A (en) | 2011-01-05 |
| CN101936537B true CN101936537B (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105011574A Expired - Fee Related CN101936537B (en) | 2010-10-09 | 2010-10-09 | Boiler powder generation system for burning lignite in power station gas duct and cooling tower machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101936537B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777456A (en) * | 1966-07-22 | 1973-12-11 | B Lund | Extracting water from the atmosphere |
| DE4002741A1 (en) * | 1990-01-31 | 1991-08-01 | Rwe Energie Ag | System for operating coal fired power station plant - in which slurry from system is fed into furnace with coal to lower ash fusion point |
| CN2807009Y (en) * | 2005-05-31 | 2006-08-16 | 刘登云 | Three-no-boiler |
| CN101165405A (en) * | 2007-08-17 | 2008-04-23 | 中国神华能源股份有限公司 | Smoke-discharging tower integration device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082732A (en) * | 1999-09-16 | 2001-03-30 | Minoru Yoshimoto | Waste gas cooler for combustioin furnace |
| CN201875730U (en) * | 2010-10-09 | 2011-06-22 | 黑龙江省电力科学研究院 | Boiler pulverizing system for the combustion of brown coal in set combined power station with smoke tower |
-
2010
- 2010-10-09 CN CN2010105011574A patent/CN101936537B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777456A (en) * | 1966-07-22 | 1973-12-11 | B Lund | Extracting water from the atmosphere |
| DE4002741A1 (en) * | 1990-01-31 | 1991-08-01 | Rwe Energie Ag | System for operating coal fired power station plant - in which slurry from system is fed into furnace with coal to lower ash fusion point |
| CN2807009Y (en) * | 2005-05-31 | 2006-08-16 | 刘登云 | Three-no-boiler |
| CN101165405A (en) * | 2007-08-17 | 2008-04-23 | 中国神华能源股份有限公司 | Smoke-discharging tower integration device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-82732A 2001.03.30 |
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| Publication number | Publication date |
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| CN101936537A (en) | 2011-01-05 |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121017 |
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Effective date of registration: 20121017 Address after: 150030 Xiangjiang Road, Xiangfang District, Heilongjiang, No. 7, No. Patentee after: HEILONGJIANG ELECTRIC POWER Research Institute Patentee after: State Grid Corporation of China Address before: 150030 Xiangjiang Road, Xiangfang District, Heilongjiang, No. 7, No. Patentee before: Heilongjiang Electric Power Research Institute |
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Granted publication date: 20111102 |