CN103894039B - For coal fired power plant flue fall dirty can online weighing sorbent injection device - Google Patents
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- CN103894039B CN103894039B CN201410070186.8A CN201410070186A CN103894039B CN 103894039 B CN103894039 B CN 103894039B CN 201410070186 A CN201410070186 A CN 201410070186A CN 103894039 B CN103894039 B CN 103894039B
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Abstract
A kind of for coal fired power plant flue fall dirty can online weighing sorbent injection device: comprise the pressure-air import (2), valve (3), pressure regulator valve (4), flowmeter (5) and the air dryer (6) that connect successively with pipeline, after air dryer (6), pipeline is divided into two: one is pressure piping (15), is communicated to the adsorbent charging device (1) that is provided with weighing device after first flow control valve (7); Another is conveying pipeline, is communicated to the playpipe (14) stretching in flue after second adjustable valve (8), gate valve (12) and gas flowmeter (13); Described adsorbent charging device (1) is equipped with the discharge hole for discharge of outlet valve (10) to the conveying pipeline between second adjustable valve (8) and gate valve (12), the external high-pressure air source of pressure-air import (2). The present invention can on-line monitoring sorbent injection mass flow, and simple in structure, applicable to the coal-burning power plant of various site environments.
Description
Technical field
The present invention relates to a kind of for coal fired power plant flue fall dirty can online weighing sorbent injection device, its clothPut on boiler of power plant flue, can store absorbent powder material and by technological requirement quantitatively, stable, equablySpray adsorbent, and there is online weighing and monitor in real time the function of injection flow.
Background technology
Along with the raising to environmental requirement, country promulgates new thermal power plant's pollutant emission standard(GB13223-2011), wherein conventional coal-fired dirty about coal-burning boiler dust, sulfur dioxide, nitrogen oxide etc.Dye thing more strict, and the limit value of the concentration of emission of newly-increased mercury and mercuric compounds, therefore thermal power plant need to take respectivelyKind method further reduces pollutant emission. Spraying adsorbent to coal-burning power plant's back-end ductwork pollutes to reach to reduceThing discharge is a kind of method of economical and efficient wherein. At present, comparatively similar techniques have power plant's coal dust, flying dust defeatedSend system, thermal power plant's coal dust, dust conveying system mainly adopt strength to carry: coal powder conveying system is mainly by grindingCoal machine, primary air fan, pressure fan, coordinate the air-introduced machine that is arranged in boiler back end ductwork to carry coal to boiler furnacePowder, can fed distance far away, but system is huge, equipment is complicated, cost of investment is huge; Dust conveying system willFlying dust is sent in the air-flow of high-speed cruising, under the drive of air-flow, flying dust is sent in grey storehouse, can not supervise in real timeControl, when advancing into the flying dust gross mass of storehouse pump, cannot accurately be controlled and carry flying dust flow, and cost of investment is also larger.
For coal-burning power plant, along with environmental requirement is more and more stricter, environmental protection expenditure is more and more higher, simultaneously present stageGeneral rate of load condensate is lower, and coal price goes up, and causes profit space more and more narrow, and therefore development system is simple, economicalCheap, remove the significant sorbent injection device of pollutant effect and become a kind of urgent demand. And along withThe increase of boiler capacity, boiler structure more voluminous compactness, the injection apparatus therefore installing additional needs floor space little,Can suit measures to local conditions, flexible arrangement, convenient management, cleanliness without any pollution.
Generally, air-transport system only possesses traffic monitoring, finally draws conveying quality by calculating,Can not intuitively reflect the mass change of material in induction system, the air-transport system of some maximization as coal dust,Dust conveying system is difficult to change into instantaneous convey materials quality by feed flow, thereby can only determine a certainThe mean value of time period. In pollutant control draining technology, adjust in real time absorption by pollutant situation of changeThe jet quality of agent, realizes when environmental protection is produced and reduces operating cost, has important engineering practical value.
Summary of the invention
Technical problem to be solved by this invention, be just to provide a kind of for coal fired power plant flue fall dirty can be onlineThe sorbent injection of weighing device, it can on-line monitoring sorbent injection mass flow, and simple in structure, can fitFor the coal-burning power plant of various site environments.
Solve the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
For coal fired power plant flue fall dirty can an online weighing sorbent injection device, it is characterized in that: compriseThe pressure-air import 2, valve 3, pressure regulator valve 4, flowmeter 5 and the air dryer 6 that connect successively with pipeline,The rear pipeline of air dryer 6 is divided into two: one is pressure piping 15, after first flow control valve 7, is communicated withTo the adsorbent charging device 1 that is provided with weighing device; Another is conveying pipeline, through second adjustable valve 8,After gate valve 12 and gas flowmeter 13, be communicated to the playpipe 14 stretching in flue; The reinforced dress of described adsorbentPut 1 discharge hole for discharge that outlet valve 10 is housed to the conveying pipeline between second adjustable valve 8 and gate valve 12Upper, the described external high-pressure air source of pressure-air import 2.
Pressure regulator valve, flowmeter and the valve installing additional before air dryer is in order to stablize air inlet pipeline pressure and precision regulatingJoint air demand; Before conveying pipeline and pressure piping, all install flow control valve additional, be used for fine adjustment branch road air feedAmount, thus reach the object that regulates sorbent injection mass flow.
Described adsorbent charging device 1, for being provided with the tank body of feed hopper and discharging opening, comprises: enter from top to bottomHopper 101, ellipse head 105, straight barrel 102, conical head 107 and discharging flange 108, the end of tank bodyPortion with tripodia bracing frame 103 support, inside is equipped with in adsorbable flue gas pollutant as heavy metal, sulfur dioxide etc.Adsorbent; Safety valve 104 is equipped with at ellipse head 105 tops, and control feeding device internal pressure is no more than establishesDefinite value; Described adsorbent charging device 1 has also installed Pressure gauge 106 additional, monitoring tank body internal pressure situation of change,Regulate with control piper;
Described feed hopper 101 is sealing state in the time that adsorbent charging device 1 is worked, described conical headBe preferably cone-apex angle and be the standard sealing head of 60 °.
LOAD CELLS 9, LOAD CELLS are equipped with respectively in the bottom of described adsorbent charging device 1 bracing frameBe connected with signal processor 11 by data wire, reflect in real time the quantity of sorbent in feeding device, in order to control sprayPenetrate adsorbent changes in flow rate.
Described playpipe outlet is stretched in flue, is provided with three playpipes, opens three puff prots on every pipe,Jet distributes as net shape in square flue, and sorbent injection direction is along flue gas flow direction.
Three described playpipe levels stretch into flue, apart from flue sidewall position difference 0.75L, 0.5L, 0.25L,Jet position on every playpipe is apart from flue bottom 0.25W, 0.5W, 0.75W; L is flue length,W is the flue degree of depth.
Beneficial effect of the present invention is:
Of the present inventionly fall and dirty can utilize weighing and sensing by online weighing sorbent injection device for coal fired power plant flueDevice is measured the quality signal of adsorbent, and the mass flow of adsorbent is sprayed in monitoring in real time, according to entering hearth combustionCoal in pollutant situation of change and be discharged into airborne pollutant level and adjust in real time sorbent injection deviceInjection flow, thus reach the production requirement of coal-burning power plant's environmental protection and economy; The present invention is simple in structure, is convenient to safeguard,Cost is low, and pollutant removing effect is high, and can spray adsorbent mass changes in flow rate, maximum by controlling in real timeChange and reduce the environmental protection cost increasing because removing pollutant, reduce equipment investment and operating cost, greatly improved sprayPenetrate the economy of adsorbent.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 be coal fired power plant of the present invention for coal fired power plant flue fall dirty can online weighing sorbent injection dressPut composition and annexation schematic diagram;
Fig. 2 is composition and the annexation schematic diagram of adsorbent charging device of the present invention;
Fig. 3 is that the bracing frame of adsorbent charging device of the present invention is arranged schematic diagram;
Fig. 4 is the playpipe layout drawing in the flue of adsorbent charging device of the present invention.
Description of reference numerals: 1, adsorbent charging device; 2, pressure-air import; 3, valve; 4, pressure regulationValve; 5, flowmeter; 6, air dryer; 7, first flow control valve; 8, second adjustable valve; 9,LOAD CELLS; 10, outlet valve; 11, signal processor; 12, gate valve; 13, gas flowmeter; 14,Playpipe; 15, pressure piping; 16, conveying pipeline; 101, feed hopper; 102, straight barrel; 103, supportFrame; 104, safety valve; 105, ellipse head; 106, Pressure gauge; 107, conical head; 108, discharging methodBlue.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, embodiment of the present invention are described in further detail.
The embodiment of the present invention as shown in Figure 1, the pressure-air import 2 connecting successively with pipeline, valve 3, tunePressure valve 4, flowmeter 5 and air dryer 6, the rear pipeline of air dryer 6 is divided into two: one is pressure inletRoad 15 is communicated to adsorbent charging device 1 pressurization gas that is provided with weighing device after first flow control valve 7Entrance; Another is conveying pipeline, after second adjustable valve 8, gate valve 12 and gas flowmeter 13, connectsPass to the playpipe 14 stretching in flue; The discharge hole for discharge that adsorbent charging device 1 is equipped with outlet valve 10 extremelyOn conveying pipeline between second adjustable valve 8 and gate valve 12, the external high-pressure air source of pressure-air import 2.
Compressed air enters from pressure-air import 2, and air mass flow is by valve 3, pressure regulator valve 4 and flowmeter 5Regulate, concrete adjustable range is required to determine by smoke property and pollutant removing; Air is through air dryer 6Dry, remove airborne moisture, in order to avoid cause feeding device and conveying pipeline humidity to cause that adsorbent stops up.Dried air is divided into two-way, and a road is pressure piping 15, enters in feeding device 1, can adjust by flowPressure gauge 106 on joint valve and feeding device 1 coordinates to control the flow and the pressure that enter feeding device gas, mendsFill the gas in feeding device and the local fluidization that promotes adsorbent in injection phase; An other road is conveying pipeline16, air carries adsorbent to playpipe 14, can control the air stream that enters conveying pipeline by flow control valve 8Amount, thus reach the object of carrying adsorbent flow. Before playpipe 14, also add gate valve 12 and flowmeter 13,Measure and control the sorbent injection flow of playpipe 14, concrete adjustable range is by flue gas in flue character and pollutionThing level determines.
Referring to Fig. 2 and Fig. 3, adsorbent charging device 1 main body is by ellipse head 105, straight barrel 102 and taperEnd socket 107 is welded. The straight length of the eccentric part of ellipse head 105 is furnished with feed hopper 101; Along straight tubeBody 102 circumference have Pressure gauge 106 and supercharging gas interface. The preferred cone-apex angle of conical head 107 is 60 °,Under be furnished with discharging flange 108. Entirety feeding device is by three bracing frame 103 supports upright. Adsorbent warpEnter feeding device by feed hopper 101, determine that by LOAD CELLS 9 and signal processor 11 adsorbent stores shapeState. Adsorbent from discharging flange 108 out, is controlled discharging speed through outlet valve 10, enters conveying pipeline 16.
LOAD CELLS 9 is arranged on respectively the bottom of bracing frame 103, is connected to signal processor 11 through holding wireIn, reflect in real time adsorbent mass situation of change in course of injection. After injection phase starts, adsorbent enters stoveThorax, flue gas pollutant level declines, along with the variation and the boiler operating parameter that enter to carry in stove fire coal pollutant becomeChange, burner hearth pollutant level also changes thereupon, can be according to setting needed adsorbent mass after comprehensive analysis,Regulate valve and flow control valve on pipeline, the data that LOAD CELLS 9 is obtained reach setting value, fromAnd realize the optimum spray regime of adsorbent, reach the production requirement of economic environmental protection.
As shown in Figure 4, power plant's flue is rectangular flue, establishes three playpipes, and every pipe is provided with three injectionsMouthful. Three playpipe levels stretch into flue, apart from flue sidewall position difference 0.75L, 0.5L, 0.25L, everyJet position on playpipe is apart from flue bottom 0.25W, 0.5W, and 0.75W(L is flue length, WFor the flue degree of depth), described jet method for arranging can make adsorbent evenly be injected in flue, abundant with flue gasContact.
Claims (4)
- One kind for coal fired power plant flue fall dirty can online weighing sorbent injection device, it is characterized in that: comprise the pressure-air import (2), valve (3), pressure regulator valve (4), flowmeter (5) and the air dryer (6) that connect successively with pipeline, after air dryer (6), pipeline is divided into two: one is pressure piping (15), is communicated to the adsorbent charging device (1) that is provided with weighing device after first flow control valve (7); Another is conveying pipeline, is communicated to the playpipe (14) stretching in flue after second adjustable valve (8), gate valve (12) and gas flowmeter (13); Described adsorbent charging device (1) is equipped with the discharge hole for discharge of outlet valve (10) to the conveying pipeline between second adjustable valve (8) and gate valve (12), the external high-pressure air source of pressure-air import (2);Described adsorbent charging device (1) is for being provided with the tank body of feed hopper and discharging opening, comprise from top to bottom: feed hopper (101), ellipse head (105), straight barrel (102), conical head (107) and discharging flange (108), tripodia bracing frame for the bottom of tank body (103) supports, adsorbent is equipped with in inside; Safety valve (104) is equipped with at ellipse head (105) top, and adsorbent charging device (1) has also installed Pressure gauge (106) additional.
- According to claim 1 for coal fired power plant flue fall dirty can online weighing sorbent injection device, it is characterized in that: described feed hopper (101) is sealing state in the time that adsorbent charging device 1 is worked, it is the standard sealing head of 60 ° that described conical head is preferably cone-apex angle.
- According to claim 2 for coal fired power plant flue fall dirty can online weighing sorbent injection device, it is characterized in that: LOAD CELLS (9) is equipped with in the bottom of described adsorbent charging device (1) bracing frame, and LOAD CELLS is connected with signal processor (11) by data wire.
- According to claim 3 for coal fired power plant flue fall dirty can online weighing sorbent injection device, it is characterized in that: the outlet of described playpipe is stretched in flue, be provided with three playpipes, on every pipe, open three puff prots, jet distributes as net shape in square flue, and sorbent injection direction is along flue gas flow direction; Three described playpipe levels stretch into flue, and apart from flue sidewall position difference 0.75L, 0.5L, 0.25L, the jet position on every playpipe is apart from flue bottom 0.25W, 0.5W, 0.75W; L is flue length, and W is the flue degree of depth.
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| CN201410070186.8A CN103894039B (en) | 2014-02-27 | 2014-02-27 | For coal fired power plant flue fall dirty can online weighing sorbent injection device |
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| CN201410070186.8A CN103894039B (en) | 2014-02-27 | 2014-02-27 | For coal fired power plant flue fall dirty can online weighing sorbent injection device |
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| CN103894039B true CN103894039B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104826453A (en) * | 2015-04-10 | 2015-08-12 | 长兴新川高温材料有限公司 | Flue gas purifier |
| CN110940752B (en) * | 2019-12-17 | 2022-08-05 | 陕西延长石油（集团）有限责任公司 | Multi-element low-carbon hydrocarbon adsorption and desorption evaluation device and method |
Citations (4)
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|---|---|---|---|---|
| CN202497799U (en) * | 2011-12-16 | 2012-10-24 | 国电环境保护研究院 | Fire coal flue gas adsorption mercury removal device |
| CN102794080A (en) * | 2012-08-30 | 2012-11-28 | 北京国电清新环保技术股份有限公司 | Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven |
| CN203886390U (en) * | 2014-02-27 | 2014-10-22 | 广东电网公司电力科学研究院 | Online-weighing adsorbent jetting device for reducing pollution of coal-fired power plant |
| CN204247073U (en) * | 2014-11-24 | 2015-04-08 | 彭峻 | Diesel engine selective-catalytic-reduction-based flue gas denitrifying device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202497799U (en) * | 2011-12-16 | 2012-10-24 | 国电环境保护研究院 | Fire coal flue gas adsorption mercury removal device |
| CN102794080A (en) * | 2012-08-30 | 2012-11-28 | 北京国电清新环保技术股份有限公司 | Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven |
| CN203886390U (en) * | 2014-02-27 | 2014-10-22 | 广东电网公司电力科学研究院 | Online-weighing adsorbent jetting device for reducing pollution of coal-fired power plant |
| CN204247073U (en) * | 2014-11-24 | 2015-04-08 | 彭峻 | Diesel engine selective-catalytic-reduction-based flue gas denitrifying device |
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee after: North China Electric Power University Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee before: North China Electric Power University Patentee before: Electrical Power Research Institute of Guangdong Power Grid Corporation |
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