CN104266179A - Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler - Google Patents
Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler Download PDFInfo
- Publication number
- CN104266179A CN104266179A CN201410532376.7A CN201410532376A CN104266179A CN 104266179 A CN104266179 A CN 104266179A CN 201410532376 A CN201410532376 A CN 201410532376A CN 104266179 A CN104266179 A CN 104266179A
- Authority
- CN
- China
- Prior art keywords
- limestone
- lime stone
- batcher
- lime
- cfb boiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
Abstract
The invention provides a limestone two-stage adding system for a CFB (Circulating Fluid Bed) boiler. The limestone two-stage adding system comprises a pneumatic conveying system connected and communicated with a limestone powder preparation system and a mechanical conveying system composed of a bucket type elevator, a limestone hopper and a feeder (3), wherein the bucket type elevator is used for outputting limestone to the limestone hopper; and the outlet end of the limestone hopper is connected and communicated with the feeding end of the feeder (3); the feeder (3) is driven by a feeder driving device (1), the discharge end of the feeder (3) is connected with a discharge pipeline (4), and the limestone outputted from the discharge pipeline (4) falls onto a coal conveying belt of a belt type conveyor (5). Due to the adoption of the limestone two-stage adding system, the type selection and the output of an original limestone power preparation system and an original pneumatic conveying system can be effectively reduced, the initial cost and the running expense of the limestone power preparation system and the pneumatic conveying system can be reduced, the energy-saving and consumption-reducing level of the CFB boiler can be improved; the limestone two-stage adding system has the outstanding advantages of simple structure, low investment cost, high reliability and the like.
Description
Technical field
The present invention relates to CFB boiler technology field, especially relate to a kind of CFB boiler lime stone two-stage add-on system.
Background technology
CFB (English full name Circulating Fluidized-bed Boiler common at present, CFBB) boiler is coal boiler, in the boiler course of work, normal employing lime stone removes the sulphur composition in fire coal, to alleviate environmental pollution.
First the raw limestone of existing CFB boiler, normally utilize agstone preparation system to make agstone, then by air-transport system, agstone sent into boiler furnace.But because the sulfur content of part power plant fire coal used is high, being in great demand to agstone, therefore, lime stone consumption is larger, this must cause increase of exerting oneself, the type selecting difficulty of agstone preparation system and air-transport system, and the cost of investment of air-transport system itself compared with high, to run power consumption large, be unfavorable for energy-saving and cost-reducing and reduce the operating cost of CFB boiler.
Summary of the invention
The technical problem to be solved in the present invention is: for prior art Problems existing, provides a kind of CFB boiler lime stone two-stage add-on system, reduces the energy consumption of agstone preparation system and air-transport system, improves the economy of CFB boiler operatiopn.
The technical problem to be solved in the present invention realizes by the following technical solutions: a kind of CFB boiler lime stone two-stage add-on system, comprise the air-transport system that to be connected with agstone preparation system and to communicate and by bucket elevator, the mechanical conveying system of lime stone hopper and batcher composition, described bucket elevator exports lime building stones in lime stone hopper, described lime stone hopper outlet end is connected with batcher feeding end and communicates, described batcher is driven by batcher drive unit, its discharge end connects drainage line, the lime building stones exported from drainage line fall into the coal conveyer belt of ribbon conveyer.
Preferably, the connecting pipe between described lime stone hopper outlet end and batcher feeding end arranges gate.
Preferably, described gate is electric gate valve.
Preferably, described batcher adopts Weighing type batcher.
Preferably, described batcher drive unit adopts motor.
Preferably, the maximum particle diameter of lime building stones that described bucket elevator exports in lime stone hopper is less than or equal to 10mm.
Compared with prior art, the invention has the beneficial effects as follows: owing to adding lime stone mechanical conveying system on the basis of CFB boiler original conventional stage lime stone Geldart-D particle add-on system, this lime stone mechanical conveying system structure is simple, cost of investment is cheaper compared to the air-transport system of routine, and reliability is higher.Therefore, for the CFB boiler that lime stone consumption is larger, after adopting lime stone two-stage add-on system, the type selecting that effectively can reduce former agstone preparation system and air-transport system is exerted oneself, thus reduce initial cost and the operating cost of agstone preparation system and air-transport system, improve the energy-saving and cost-reducing level of CFB boiler.
Accompanying drawing explanation
Fig. 1 is the structural map of a kind of CFB boiler of the present invention lime stone two-stage add-on system.
Mark in figure: 1-batcher drive unit, 2-gate, 3-batcher, 4-drainage line, 5-ribbon conveyer.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of CFB boiler lime stone two-stage add-on system as shown in Figure 1, mainly comprise air-transport system and mechanical conveying system, mechanical conveying system wherein forms primarily of bucket elevator, lime stone hopper, batcher 3, at the feeding end of described batcher 3, discharge end, all pipeline coupling flange is set, described lime stone hopper outlet end is communicated with being connected by pipeline between batcher 3 feeding end, and lime stone hopper outlet end pipeline arranges a gate 2; Described batcher 3 is driven by batcher drive unit 1, the discharge end of batcher 3 connects drainage line 4, described drainage line 4 outlet is arranged in above the coal conveyer belt of the ribbon conveyer 5 of CFB coal delivery of boiler system, directly can drop into coal conveyer belt along drainage line 4 from the lime building stones of batcher 3 discharge end output.The lime building stones fallen on coal conveyer belt directly mix with the coal-fired powder on coal conveyer belt, are then delivered to boiler furnace by coal conveyer belt through feeder.Described air-transport system is connected by pipeline with agstone preparation system, boiler furnace respectively and communicates, lime building stones are first processed into powder through agstone preparation system, boiler furnace is delivered to again by air-transport system, both agstone material and fire coal Thorough combustion in boiler furnace had been conducive to, improve desulfurized effect and limestone utilization, powdered lime building stones are also convenient to Geldart-D particle simultaneously, are conducive to the energy consumption reducing air-transport system.
Above-mentioned batcher drive unit 1 can select motor, described gate 2 can select electronic coal gate, motor, electronic coal gate are convenient to by electrified control system centralized Control, so just can realize the electrification even Automated condtrol of CFB boiler lime stone two-stage add-on system, be conducive to saving manpower.Batcher 3 wherein can adopt Weighing type batcher, by the detection of weighing to lime building stones supply, the supply rate of lime building stones can be regulated easily, to improve the utilization rate entering the lime building stones of boiler furnace, improve the economy of CFB boiler operatiopn.
The present invention is applicable to the design of the larger CFB boiler lime stone handling system of lime stone consumption, the maximum particle diameter of the lime building stones that lime stone mechanical conveying system is wherein carried is less than or equal to 10mm, to ensure desulfuration efficiency higher in the Effec-tive Function of lime stone mechanical conveying system and CFB Boiler Furnace.If the limestone particle size of machinery conveying is excessive, the utilization rate of lime building stones in CFB boiler can be reduced, cause lime stone consumption to increase; If the limestone particle size of machinery conveying is too small, the agstone dust concentration of leakage may be caused in course of conveying to increase fast, thus cause larger potential safety hazard, also be unfavorable for environmental protection.Air-transport system is wherein the existing conventional scheme of CFB boiler controller system, the lime building stones carried need to carry out crushing grinding through agstone preparation system, the particle diameter of the agstone after grinding is at below 1mm, so that the efficient conveying of air-transport system.
The course of work of the mechanical conveying system increased is: first, adopts bucket elevator to be delivered to by lime building stones in lime stone hopper temporary; Secondly, when needs add lime building stones to boiler furnace, open gate 2, namely the lime building stones be in lime stone hopper drop on Weighing type batcher 3 by pipeline; Then, the lime building stones dropped on Weighing type batcher 3, under the driving effect of drive unit 1, are delivered to drainage line 4 by Weighing type batcher 3, and directly drop on the coal conveyer belt of ribbon conveyer 5 along drainage line 4; Finally, the lime building stones that coal-fired powder on coal conveyer belt falls on coal conveyer belt mix with the coal-fired powder on coal conveyer belt, and be delivered to boiler furnace by coal conveyer belt through feeder, wherein, the coal-fired powder on described coal conveyer belt is delivered on coal conveyer belt by thin coal breaker as shown in Figure 1.
Compared with only adopting the one-level lime stone Geldart-D particle add-on system of routine, the present invention utilizes the air-transport system of original routine except boiler furnace conveying lime building stones except continuing, also increasing utilizes mechanical conveying system to CFB boiler furnace adding portion lime building stones, so not only can reduce the lime stone consumption of air-transport system conveying, reduce exerting oneself of agstone preparation system and air-transport system, be conducive to the Selection and Design of agstone preparation system and air-transport system, and significantly reduce initial cost and the operating cost of agstone preparation system and air-transport system, be conducive to the energy-saving and cost-reducing level improving CFB boiler.In addition, due to the mechanical conveying system simple structure increased, easy to maintenance, it is cheaper compared to the initial cost cost of air-transport system, reliability is also higher, not only can ensure the lime stone consumption needed for CFB boiler, also effectively can reduce the cost of investment of CFB boiler, thus effectively improve the economy of CFB boiler operatiopn.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, it should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a CFB boiler lime stone two-stage add-on system, comprise and be connected with agstone preparation system the air-transport system communicated, it is characterized in that: also comprise by bucket elevator, the mechanical conveying system that lime stone hopper and batcher (3) form, described bucket elevator exports lime building stones in lime stone hopper, described lime stone hopper outlet end is connected with batcher (3) feeding end and communicates, described batcher (3) is driven by batcher drive unit (1), its discharge end connects drainage line (4), the lime building stones exported from drainage line (4) fall into the coal conveyer belt of ribbon conveyer (5).
2. CFB boiler lime stone two-stage add-on system according to claim 1, is characterized in that: the connecting pipe between described lime stone hopper outlet end and batcher (3) feeding end is arranged gate (2).
3. CFB boiler lime stone two-stage add-on system according to claim 2, is characterized in that: described gate (2) is electric gate valve.
4. the lime stone two-stage add-on system of the CFB boiler according to any one of claim 1-3, is characterized in that: described batcher (3) adopts Weighing type batcher.
5. the lime stone two-stage add-on system of the CFB boiler according to any one of claim 1-3, is characterized in that: described batcher drive unit (1) adopts motor.
6. the lime stone two-stage add-on system of the CFB boiler according to any one of claim 1-3, is characterized in that: the maximum particle diameter of the lime building stones that described bucket elevator exports in lime stone hopper is less than or equal to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532376.7A CN104266179A (en) | 2014-10-11 | 2014-10-11 | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532376.7A CN104266179A (en) | 2014-10-11 | 2014-10-11 | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104266179A true CN104266179A (en) | 2015-01-07 |
Family
ID=52157730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410532376.7A Pending CN104266179A (en) | 2014-10-11 | 2014-10-11 | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104266179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776425A (en) * | 2015-04-17 | 2015-07-15 | 贵州电力试验研究院 | Over-temperature prevention device for CFB (circulating fluid bed) boiler after addition and burning of peat and control method of over-temperature prevention device |
| CN106731944A (en) * | 2016-12-29 | 2017-05-31 | 华中科技大学 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
| CN107051689A (en) * | 2017-01-16 | 2017-08-18 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of lime stone dry grinding prepares arrangement |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156327A (en) * | 1982-03-12 | 1983-09-17 | Sumitomo Heavy Ind Ltd | Desulfurization of exhaust gas |
| CN1302683A (en) * | 2000-01-05 | 2001-07-11 | 浙江大学 | Two-segment desulfurizing method for high-temp combustion |
| CN202725020U (en) * | 2012-04-26 | 2013-02-13 | 上海美亚金桥能源有限公司 | Calcium carbonate composite addition dry desulfurization system of circulating fluidized bed boiler (CFBB) |
| CN103285726A (en) * | 2013-06-21 | 2013-09-11 | 山西平朔煤矸石发电有限责任公司 | Circulating fluidized bed boiler desulfurization method |
| CN103453538A (en) * | 2013-08-06 | 2013-12-18 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-low emission circulating fluidized bed boiler with three stages of desulfurization systems |
| CN203549871U (en) * | 2013-08-06 | 2014-04-16 | 中国华能集团清洁能源技术研究院有限公司 | Novel ultra-low emission circulating fluidized bed boiler |
| CN203695172U (en) * | 2013-11-25 | 2014-07-09 | 镇江市电站辅机厂有限公司 | Limestone pulverizing system |
| CN204084347U (en) * | 2014-10-11 | 2015-01-07 | 中国电力工程顾问集团西南电力设计院 | A kind of CFB boiler lime stone two-stage add-on system |
-
2014
- 2014-10-11 CN CN201410532376.7A patent/CN104266179A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156327A (en) * | 1982-03-12 | 1983-09-17 | Sumitomo Heavy Ind Ltd | Desulfurization of exhaust gas |
| CN1302683A (en) * | 2000-01-05 | 2001-07-11 | 浙江大学 | Two-segment desulfurizing method for high-temp combustion |
| CN202725020U (en) * | 2012-04-26 | 2013-02-13 | 上海美亚金桥能源有限公司 | Calcium carbonate composite addition dry desulfurization system of circulating fluidized bed boiler (CFBB) |
| CN103285726A (en) * | 2013-06-21 | 2013-09-11 | 山西平朔煤矸石发电有限责任公司 | Circulating fluidized bed boiler desulfurization method |
| CN103453538A (en) * | 2013-08-06 | 2013-12-18 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-low emission circulating fluidized bed boiler with three stages of desulfurization systems |
| CN203549871U (en) * | 2013-08-06 | 2014-04-16 | 中国华能集团清洁能源技术研究院有限公司 | Novel ultra-low emission circulating fluidized bed boiler |
| CN203695172U (en) * | 2013-11-25 | 2014-07-09 | 镇江市电站辅机厂有限公司 | Limestone pulverizing system |
| CN204084347U (en) * | 2014-10-11 | 2015-01-07 | 中国电力工程顾问集团西南电力设计院 | A kind of CFB boiler lime stone two-stage add-on system |
Non-Patent Citations (1)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委员会: "《注册环保工程师专业考试复习教材（修订版）（第一分册）》", 31 May 2008, 中国环境科学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776425A (en) * | 2015-04-17 | 2015-07-15 | 贵州电力试验研究院 | Over-temperature prevention device for CFB (circulating fluid bed) boiler after addition and burning of peat and control method of over-temperature prevention device |
| CN106731944A (en) * | 2016-12-29 | 2017-05-31 | 华中科技大学 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
| CN106731944B (en) * | 2016-12-29 | 2019-10-08 | 华中科技大学 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
| CN107051689A (en) * | 2017-01-16 | 2017-08-18 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of lime stone dry grinding prepares arrangement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104190243B (en) | The coal-burning boiler method of carbide slag desulfurization and equipment thereof | |
| CN104266179A (en) | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler | |
| CN204777659U (en) | Limestone flour addition system for desulfurization in circulating fluidized bed boiler stove | |
| CN201125092Y (en) | Short stage dust conveying facility for dry type dust removing equipment | |
| CN204084347U (en) | A kind of CFB boiler lime stone two-stage add-on system | |
| CN204675383U (en) | A kind of adjustable air-transport system of exerting oneself | |
| CN201473058U (en) | Conveying device in positive-negative integrated multifunctional pump system | |
| CN206126329U (en) | Coal slime transport structure of mutual formula of cutting | |
| CN203281221U (en) | Dry fine continuous desulfurization device for CFB (Circulating fluid bed) boiler | |
| CN102009851A (en) | Conveying method for bottom discharge bin pump | |
| CN202988157U (en) | Wet type submerged scraper conveyor slag removal system with jigging conveyer | |
| CN203695244U (en) | Novel coal ash sorting device | |
| CN204127946U (en) | The lime stone conveying device of CFBB | |
| CN202098871U (en) | Pebble coal mechanical conveying system | |
| CN204642888U (en) | Unpowered automatic control chute anti-block apparatus | |
| CN202902321U (en) | Boiler feed conveyer | |
| CN206814026U (en) | A kind of pulverized limestone induction system for calcium injection and desulfurization boiler | |
| CN201100652Y (en) | Boiler combustion feeding device | |
| CN207748408U (en) | A kind of lime stone carries material distribution storage device | |
| CN207786790U (en) | A kind of apron feeder | |
| CN102886297A (en) | Automatic feeder | |
| CN107654997B (en) | Circulating ash control system and method for circulating fluidized bed boiler | |
| CN211040984U (en) | Limestone bin intercommunication incineration device | |
| CN204513373U (en) | Mechanical type boiler bed material add-on system | |
| CN203461944U (en) | Pulverized fuel low-pressure conveying system for small and medium-sized glass furnaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION TO: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |
|
| RJ01 | Rejection of invention patent application after publication |