CN103375796A - Particle thermal medium heater with narrow-screening fire coal circulating fluidized beds - Google Patents
Particle thermal medium heater with narrow-screening fire coal circulating fluidized beds Download PDFInfo
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- CN103375796A CN103375796A CN2012101074959A CN201210107495A CN103375796A CN 103375796 A CN103375796 A CN 103375796A CN 2012101074959 A CN2012101074959 A CN 2012101074959A CN 201210107495 A CN201210107495 A CN 201210107495A CN 103375796 A CN103375796 A CN 103375796A
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Abstract
The main body of a particle thermal medium heater with narrow-screening fire coal circulating fluidized bed consists of a high-speed fluidized bed, a low-speed fluidized bed, a lean-phase zone, a high-temperature cyclone separator, a J-shaped valve and a communicated discharging device.
Description
Affiliated technical field
The present invention is the fire coal circulating fluid bed particle heat medium heater of a kind of fire coal circulating fluid bed particle heat medium heater, particularly a kind of narrow-size distribution.
Background technology
About 30%～40% in the heat that fire coal circulating fluid bed stove internal combustion produces, the flue gas that is produced by burning and for guaranteeing necessary excessive approximately 15%～25% the air of good combustion with 800 ℃～1050 ℃ band flake hearth-tappings, the other heat carrier of all the other caloric requirements of 60%～70% absorb to realize fire box temperature suitably.Be hot cigarette wind furnace by more excess air absorber; Be hot water or steam boiler by hot water or vapor absorption person; Be heat-conducting oil furnace by the conduction oil absorber; And be the particle heat medium heater by particle heat carrier absorber.The high-temperature particle heat carrier has two main applications, and the first is by media such as heating surface indirect hot water.When heat hot water in fluid bed, because of heat transfer coefficient far above the radiant heat transfer in the burner hearth, the heating surface thermic load will improve 2～3 times, the surface wear that can keep from heat, furnace volume heat release rate also can increase substantially; Another purposes of high-temperature particle heat carrier is direct heating, and it is used for adding hot-air can obtain to be higher than 500 ℃ high temperature air; When being used for the high humility powder drying, heat transfer and mass transfer effect are fine.When being used for directly heating, wish that particle is narrow-size distribution.Particle diameter is excessive, is unfavorable for fluidisation and conveying; Particle diameter is too small, is unfavorable for and the heating feed separation.
Summary of the invention
The present invention screens the narrow-size distribution particle by the fluid bed that two different gas speed are set in fire coal circulating fluid bed particle heat medium heater.It is coal-fired fluidized bed that coal and Low Temperature Thermal carrier at first are admitted to high speed, less than the coal of certain particle size and heat carrier by elutriation to the top dilute-phase zone, heat carrier is heated intensification.The gas speed of dilute-phase zone is low, the part particle falls into low speed circulating fluidized bed, the particle that flue gas carries separates in high temperature cyclone separator and is recycled to low speed bedly, and the duff grain burns away low speed bed, depends on low speed bed gas speed from the minimum particle size that is positioned at the heat carrier that low speed bed bottom discharging mouth discharges.Low speed bed existence makes the high-temperature particle heat carrier that a memory space be arranged, and is conducive to stable supply.Be the UNICOM's discharge device that comprises L shaped valve and riser below discharge gate, can control discharge capacity.
Description of drawings
Fig. 1 is the system diagram of this invention;
Wherein respectively representative of numbering: (1) high-velocity fluidized bed, (2) low speed circulating fluidized bed, (3) dilute-phase zone, (4) high temperature cyclone separator, (5) L shaped valve, (6) J-shaped valve, (7) riser, (8) UNICOM discharge device, (9) flue gas, (10) high-temperature particle heat carrier, (11) coal, (12) Low Temperature Thermal carrier.
The specific embodiment
The present invention is achieved in that the fire coal circulating fluid bed particle heat medium heater of narrow-size distribution main body is comprised of (1) high-velocity fluidized bed, (2) low speed circulating fluidized bed, (3) dilute-phase zone, (4) high temperature cyclone separator, (5) J-shaped valve and (8) UNICOM discharge device.(11) coal feeds from (1) high-velocity fluidized bed emulsion zone top, and (12) Low Temperature Thermal carrier feeds from (1) high-velocity fluidized bed emulsion zone bottom or middle part.(1) high-velocity fluidized bed top dilute-phase zone mark attitude gas speed is 0.5～1.5m/s.(2) low speed bed bed is arranged side by side at a high speed with (1), top (3) dilute-phase zone UNICOM, the high 0.4～1m of (13) midfeather higher speed bed emulsion zone.Burner hearth (9) exhanst gas outlet is above low speed bed, and it is low speed bed that the particle that separates from (4) high temperature cyclone separator returns (2) by (5) J-shaped valve, and (2) low speed bed mark attitude empty tower gas velocity is 0.2～0.6m/s.The maximum particle diameter of high-temperature particle heat carrier depends at a high speed bed gas speed; Minimum grain size depends on low speed bed gas speed.(10) the high-temperature particle heat carrier is discharged from being positioned at low speed bed bottom discharging mouth, is (8) UNICOM discharge device that comprises (6) L shaped valve and (7) riser below discharge gate, can control discharge capacity.
Claims (3)
1. feature of the present invention is: the fire coal circulating fluid bed particle heat medium heater of narrow-size distribution main body is comprised of high-velocity fluidized bed, low speed circulating fluidized bed, dilute-phase zone, high temperature cyclone separator, J-shaped valve and UNICOM's discharge device.
2. according to claim 1, coal feeds from high-velocity fluidized bed emulsion zone top, and the Low Temperature Thermal carrier feeds from high-velocity fluidized bed emulsion zone bottom or middle part.High-velocity fluidized bed top dilute-phase zone mark attitude gas speed is 0.5～1.5m/s.Low speed bed with bed is arranged side by side at a high speed, top dilute-phase zone UNICOM, the high 0.4～1m of midfeather higher speed bed emulsion zone.The burner hearth exhanst gas outlet is above low speed bed, and the particle that separates from high temperature cyclone separator returns low speed bed by the J-shaped valve, and low speed bed mark attitude empty tower gas velocity is 0.2～0.6m/s.The maximum particle diameter of high-temperature particle heat carrier depends at a high speed bed gas speed; Minimum grain size depends on low speed bed gas speed.
3. according to claim 1, the high-temperature particle heat carrier is discharged from being positioned at low speed bed bottom discharging mouth, is the UNICOM's discharge device that comprises L shaped valve and riser below discharge gate, can control discharge capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101074959A CN103375796A (en) | 2012-04-13 | 2012-04-13 | Particle thermal medium heater with narrow-screening fire coal circulating fluidized beds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101074959A CN103375796A (en) | 2012-04-13 | 2012-04-13 | Particle thermal medium heater with narrow-screening fire coal circulating fluidized beds |
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| Publication Number | Publication Date |
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| CN103375796A true CN103375796A (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101074959A Pending CN103375796A (en) | 2012-04-13 | 2012-04-13 | Particle thermal medium heater with narrow-screening fire coal circulating fluidized beds |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949135A (en) * | 2015-06-30 | 2015-09-30 | 霍奇志 | Multi-temperature particle heat source drying device and method |
| CN113154370A (en) * | 2021-03-15 | 2021-07-23 | 张绪祎 | Combustion and heating system for producing high-temperature heat carrier particles and supporting combustion by high-concentration oxygen |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4579070A (en) * | 1985-03-01 | 1986-04-01 | The M. W. Kellogg Company | Reducing mode circulating fluid bed combustion |
| CN2136934Y (en) * | 1992-09-07 | 1993-06-23 | 周瑞熊 | Double-bed double-stage circulation boiling combustion boiler |
| CN1370952A (en) * | 2001-02-21 | 2002-09-25 | 张�诚 | L-shaped pneumatic fluidizing slag-off valve |
| CN1513952A (en) * | 2003-06-27 | 2004-07-21 | 诚 张 | Bispeed circulation fluidized bed coal gas generator |
| CN1959207A (en) * | 2005-11-03 | 2007-05-09 | 中国石油大学(北京) | Method for burning petroleum coke or gasified remained coke, and inner mixed type combustion equipment |
| US20090283445A1 (en) * | 2008-05-14 | 2009-11-19 | Tammera Robert F | FCC reactor and riser design for short contact-time catalytic cracking of hydrocarbons |
| CN101949535A (en) * | 2010-09-28 | 2011-01-19 | 哈尔滨工业大学 | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof |
| CN101982225A (en) * | 2010-09-10 | 2011-03-02 | 中国石油大学(北京) | Improved two-stage regeneration method and equipment for catalytic cracking catalyst |
-
2012
- 2012-04-13 CN CN2012101074959A patent/CN103375796A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4579070A (en) * | 1985-03-01 | 1986-04-01 | The M. W. Kellogg Company | Reducing mode circulating fluid bed combustion |
| CN2136934Y (en) * | 1992-09-07 | 1993-06-23 | 周瑞熊 | Double-bed double-stage circulation boiling combustion boiler |
| CN1370952A (en) * | 2001-02-21 | 2002-09-25 | 张�诚 | L-shaped pneumatic fluidizing slag-off valve |
| CN1513952A (en) * | 2003-06-27 | 2004-07-21 | 诚 张 | Bispeed circulation fluidized bed coal gas generator |
| CN1959207A (en) * | 2005-11-03 | 2007-05-09 | 中国石油大学(北京) | Method for burning petroleum coke or gasified remained coke, and inner mixed type combustion equipment |
| US20090283445A1 (en) * | 2008-05-14 | 2009-11-19 | Tammera Robert F | FCC reactor and riser design for short contact-time catalytic cracking of hydrocarbons |
| CN101982225A (en) * | 2010-09-10 | 2011-03-02 | 中国石油大学(北京) | Improved two-stage regeneration method and equipment for catalytic cracking catalyst |
| CN101949535A (en) * | 2010-09-28 | 2011-01-19 | 哈尔滨工业大学 | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949135A (en) * | 2015-06-30 | 2015-09-30 | 霍奇志 | Multi-temperature particle heat source drying device and method |
| CN113154370A (en) * | 2021-03-15 | 2021-07-23 | 张绪祎 | Combustion and heating system for producing high-temperature heat carrier particles and supporting combustion by high-concentration oxygen |
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Application publication date: 20131030 |
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