CN101975402A - Boiler combustion energy-saving and emission-reducing system - Google Patents
Boiler combustion energy-saving and emission-reducing system Download PDFInfo
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- CN101975402A CN101975402A CN201010539802.1A CN201010539802A CN101975402A CN 101975402 A CN101975402 A CN 101975402A CN 201010539802 A CN201010539802 A CN 201010539802A CN 101975402 A CN101975402 A CN 101975402A
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Abstract
The invention relates to a boiler combustion energy-saving and emission-reducing system which comprises a storage hopper, wherein the bottom of the storage hopper is connected with a bran combustion premixing device which is connected with an air inlet of a fan, an air outlet pipe of the fan is communicated with a hearth at the bottom of the boiler, the hearth of the boiler is internally provided with a smoke outlet, the smoke outlet is communicated with a smoke inlet at the lower part of a water film dust removing tower through a flue, a smoke outlet pipe at the top of the water film dust removing tower is communicated with a smoke inlet at the top of a dust settling tower, a smoke discharging hole is arranged at the bottom of the dust settling tower, the smoke discharging hole is communicated with the fan, a water drainage hole at the bottom of the water film dust removing tower is communicated with a sewage treatment tank through a water drainage pipe, the water drainage pipe at the bottom of the sewage treatment tank is communicated with a circulating water pump, and the circulating water pump is communicated with a water spraying device in the water film dust removing tower. The invention greatly reduces the energy consumption cost, improves the economic benefit, decreases the emission of greenhouse gas, and has no smoke and SO2 emission, thereby obtaining huge benefit to the environment protection.
Description
Technical field
The present invention relates to a kind of emission-reducing system, especially relate to a kind of boiler combustion energy-saving and emission-reduction system.
Background technology
Environmental protection is the problem that the whole mankind should draw attention.The human energy 90% that uses at present is oil, natural gas and coal.The forming process of these fuel needs 1 years, is non-renewable resource.In China's energy consumption structure, coal has accounted for 69%, can discharge a large amount of greenhouse gases during coal burning, cause greenhouse effects, and greenhouse effects will cause sea-level rise, many densely populated areas (as the most island on coastal area of china area and the Pacific and Indian oceans) all will not had by water logging, and the rising of temperature also will bring crops and the ecosystem and have a strong impact on.And coal burning also can discharge the pernicious gas that contains SO2 in a large number, severe contamination atmosphere, and formation acid rain.Acid rain can not only be strong the corrosion building, also make soil acidification, cause trees withered or died, crop production reduction, lake water quality souring, fishes and shrimps death.According to statistics, China is because of a large amount of coal fuel that use, and the annual economic loss that causes owing to the acid rain pollution reaches about 20,000,000,000 yuan.
In agricultural byproducts, cavings is a kind of renewable resource, the big and price steadiness of apparent availability.Though some boilers are also arranged now by transforming, can be fuel with cavings, because its burning, conveying device design are unreasonable, cause the cavings burning insufficient, combustion heat value is lower, so it is applied and is subjected to certain limitation.
Summary of the invention
The purpose of this invention is to provide a kind of boiler combustion energy-saving and emission-reduction system, existing boiler combustion is undue to be relied on non-renewable, heavy-polluted coal and is technical problems such as the boiler combustion of fuel is insufficient, combustion efficiency is limited with cavings to solve.
Technical problems such as it is limited that the present invention has simultaneously also solved existing emission reduction device emission reduction effect, and harmful gas emission is big.
In order to solve above technical problem, the technical solution used in the present invention is: this combustion energy saving emission-reducing system comprises storage hopper, blower fan, boiler, water film dust removal device, wastewater treatment equipment; Described storage feed hopper bottom is connected with cavings burning pre-mixing apparatus, cavings burning pre-mixing apparatus is connected with the air inlet of blower fan, the discharge pipe of blower fan is communicated with the burner hearth of boiler bottom, be provided with outlet flue in the boiler furnace, outlet flue is communicated with the mouth that advances of water film dedusting tower bottom by flue, the pipe of water film dedusting top of tower is communicated with the mouth that advances that top of tower falls in dirt, dirt falls tower bottom and is provided with exhaust opening, exhaust opening is communicated with air exhauster, the discharge outlet of water film dedusting tower bottom is communicated with purification tank for liquid waste by drainpipe, the drainpipe of this purification tank for liquid waste bottom is communicated with water circulating pump, and the interior water injector of water circulating pump and water film dedusting tower is connected.
As preferably, described wastewater treatment equipment is made up of level Four sedimentation basin and clear water reserviors, is one-way flow between sedimentation basin and the sedimentation basin, and wherein the discharge outlet of water film dedusting tower bottom is connected with the one-level sedimentation basin, and clear water reserviors are connected with water circulating pump.
As preferably, described cavings burning pre-mixing apparatus comprises a cube housing, conveying pipeline, housing is provided with charging aperture and discharging opening, is provided with " old bell " shape diffuser in the housing, and the osculum of this diffuser is towards charging aperture, big mouthful of diffuser towards discharging opening, the conveying pipeline that is connected with the housing discharging opening is provided with the inlet scoop, is covered with air door on the inlet scoop, and the inlet scoop has arc and quickens cover, arc quickens to be covered with a lot of back taper pores, is provided with the plug-in type baffle plate in the discharge nozzle in the place ahead, inlet scoop.
As preferably, be provided with three layers of sparge pipe in the described water film dedusting tower, and all have the water spray aperture bottom every layer of sparge pipe, three layers of sparge pipe are connected with the upper, middle and lower end of gas wash tower distributing pipe outward respectively, and distributing pipe is connected with water circulating pump through piping.
The present invention has characteristics such as cavings sufficient combustion, energy-saving effect is outstanding, emission reduction effect is remarkable by replacing coal-fired the use with this green pure natural of cavings, reproducible agricultural byproducts.Because the effect of cavings burning pre-mixing apparatus in the system, cavings is detonation in boiler furnace, can reach abundant burning, therefore greatly reduces energy consumption cost, has improved economic benefit.And after the cavings burning, through water film dedusting tower, purification tank for liquid waste, dirt the acting in conjunction of equipment such as tower is fallen, its waste water COD declines to a great extent when coal-fired than using, from before 80mg/L dropped to about 14mg/L; The concentration of SO2 is then by 820mg/m
3Drop to 7mg/m
3, facts have proved, use native system, can reduce the discharging of greenhouse gases, and not have flue dust, no SO2 discharging, therefore the benefit to environmental protection also is huge undoubtedly.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is a cavings burning pre-mixing apparatus structural representation shown in Figure 1.
Fig. 3 is a B shown in Figure 2 place structure enlarged drawing.
Fig. 4 is an A-A cutaway view shown in Figure 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Fig. 1 is an overall structure schematic diagram of the present invention.As shown in Figure 1, this combustion energy saving emission-reducing system comprises storage hopper 1, blower fan 6, boiler 9, water film dust removal device, wastewater treatment equipment, wherein stores hopper 1 bottom and is connected with cavings burning pre-mixing apparatus 3 by discharge nozzle 2.
Fig. 2 is a cavings burning pre-mixing apparatus structural representation shown in Figure 1.By Fig. 2 further as can be known, cavings burning pre-mixing apparatus 3 comprises cube housing 32, conveying pipeline 4, housing 32 is provided with charging aperture 31 and discharging opening 34, be provided with " old bell " shape (Ancient Chinese is for the great bell shape) diffuser 33 in the housing 32, the osculum 330 of this diffuser 33 is towards charging aperture 31, big mouthful 332 towards discharging opening 34, and also is provided with inlet scoop 35 on the conveying pipeline 4 that housing 32 discharging openings 34 are connected, is covered with air door 36 on the inlet scoop 35.Inlet scoop 35 has arc and quickens cover 38, and arc quickens cover 38 and is provided with a lot of back taper pores 381 (as shown in Figure 3), and this back taper pore 381 helps forming pressure reduction.Be provided with plug-in type baffle plate 37 on the conveying pipeline 4 in 35 the place aheads, inlet scoop, this baffle plate 37 is used for regulating the amount of carrying cavings 100.
Conveying pipeline 4 on the cavings burning pre-mixing apparatus be connected with air inlet 5 blower fan 6, the discharge pipe 7 of blower fan 6 is communicated with the burner hearth 8 of boiler 9 bottoms, be provided with outlet flue 10 in the burner hearth 8, this outlet flue 10 is communicated with the mouth 13 that advances of water film dedusting tower 14 bottoms by flue 12.The pipe 17 at water film dedusting tower 14 tops is communicated with the mouth that advances that tower 20 tops fall in dirt, and dirt falls bottom, 20 ends of tower and is provided with exhaust opening 22, and this exhaust opening 22 is communicated with air exhauster 23.
After blower fan 6 work, under the effect of blower fan 6 suction, cavings 100 in the storage hopper 1 is inhaled in " old bell " shape diffuser 33 after by feed pipe 3, thereby make cavings 100 disperse in diffuser 33, expand, the cavings 100 after the dispersion forms " cavings stream " by discharging opening 34 and enters in the conveying pipeline 4.
When " cavings stream " in the conveying pipeline 4 quickens to cover 38 through arc, being subjected to arc to quicken after the extruding of cover 38 flow velocity accelerates and produces negative pressure herein, so a large amount of air is inhaled into arc by back taper pore 381 and quickens in the cover 38, mix with " cavings stream " laggardly to go in the blower fan 6, by the pump pressure of blower fan 6, enter the burner hearth 8 interior fully burnings of boiler 9 bottoms then.When concrete the application, can be according to the combustion position of burner hearth 8, the angle that control air door 36 is opened is to regulate intake.Utilize this device, boiler 9 can save other combustion fans, so not only environmental protection, but also helps reducing cost.
Be provided with three layers of sparge pipe 15 in the water film dedusting tower 14, and every layer of sparge pipe 15 bottom all have the water spray aperture, three layers of sparge pipe 15 are connected with the upper, middle and lower end of the outer distributing pipe 16 of gas wash tower 14 respectively.Water film dedusting tower 14 bottoms are communicated with purification tank for liquid waste 25 by drainpipe 10, this purification tank for liquid waste 25 is made up of level Four sedimentation basin a1, a2, a3, a4 and a clear water reserviors a5, by Fig. 4 further as can be known, be provided with check valve 21 between sedimentation basin and the sedimentation basin, therefore can only one-way flow, the drainpipe 24 of clear water reserviors a5 bottom is connected with water circulating pump 19, and the middle part that water circulating pump 19 passes through the interior distributing pipe 16 of pipeline 18 and water film dedusting tower 14 is connected.
The waste water of water film dedusting tower 14 bottoms is communicated with one-level sedimentation basin on the purification tank for liquid waste 25 by outlet pipe 11, waste water at first enters one-level sedimentation basin a1 and carries out preliminary sedimentation, because of being one-way flow between sedimentation basin and the sedimentation basin, then waste water enters second-level settling pond a2 successively, three grades of sedimentation basin a3, level Four sedimentation basin a4 precipitate, and dust and particle mass-energy in its waste water are separated effectively.Enter clear water reserviors a5 at last through the waste water of post precipitation, the water in the clear water reserviors a5 is transported in the distributing pipe 16 in the water film dedusting tower 14 by water circulating pump 19, and by distributing pipe 16 with three layers of sparge pipe 15 of moisture dispensing.Water in the sparge pipe 15 is sprayed water downwards by the water spray aperture, forms the curtain of rain, effectively dust in the flue dust and particulate matter is dammed in water.By after the damming of three layers of sparge pipe 15, the flue gas of discharge enters into dirt from the pipe 17 at water film dedusting tower 14 tops and falls tower 20 tops.Fall in the tower 20 at dirt, after residual a small amount of flue dust obtained further sedimentation in the flue gas, under the effect of air exhauster 23 suction, clean gas discharged by the exhaust opening 22 of its underpart.
The present invention is by the continuous said process that repeats, thus the purpose of realization energy saving of system environmental protection.
Claims (4)
1. a boiler combustion energy-saving and emission-reduction system comprises storage hopper, blower fan, boiler, water film dust removal device, wastewater treatment equipment; It is characterized in that described storage feed hopper bottom is connected with cavings burning pre-mixing apparatus, cavings burning pre-mixing apparatus is connected with the air inlet of blower fan, the discharge pipe of blower fan is communicated with the burner hearth of boiler bottom, be provided with outlet flue in the boiler furnace, outlet flue is communicated with the mouth that advances of water film dedusting tower bottom by flue, the pipe of water film dedusting top of tower is communicated with the mouth that advances that top of tower falls in dirt, dirt falls tower bottom and is provided with exhaust opening, exhaust opening is communicated with air exhauster, the discharge outlet of water film dedusting tower bottom is communicated with purification tank for liquid waste by drainpipe, the drainpipe of this purification tank for liquid waste bottom is communicated with water circulating pump, and the interior water injector of water circulating pump and water film dedusting tower is connected.
2. boiler combustion energy-saving and emission-reduction according to claim 1 system, it is characterized in that described wastewater treatment equipment is made up of level Four sedimentation basin and clear water reserviors, be one-way flow between sedimentation basin and the sedimentation basin, wherein the discharge outlet of water film dedusting tower bottom is connected with the one-level sedimentation basin, and clear water reserviors are connected with water circulating pump.
3. boiler combustion energy-saving and emission-reduction according to claim 1 and 2 system, it is characterized in that described cavings burning pre-mixing apparatus comprises a cube housing, conveying pipeline, housing is provided with charging aperture and discharging opening, be provided with " old bell " shape diffuser in the housing, the osculum of this diffuser is towards charging aperture, big mouthful of diffuser towards discharging opening, the conveying pipeline that is connected with the housing discharging opening is provided with the inlet scoop, be covered with air door on the inlet scoop, the inlet scoop has arc and quickens cover, arc quickens to be covered with a lot of back taper pores, is provided with the plug-in type baffle plate in the discharge nozzle in the place ahead, inlet scoop.
4. boiler combustion energy-saving and emission-reduction according to claim 1 and 2 system, it is characterized in that being provided with in the described water film dedusting tower three layers of sparge pipe, and every layer of sparge pipe bottom all has the water spray aperture, three layers of sparge pipe are connected with the upper, middle and lower end of gas wash tower distributing pipe outward respectively, and distributing pipe is connected with water circulating pump through piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010539802A CN101975402B (en) | 2010-10-31 | 2010-10-31 | Boiler combustion energy-saving and emission-reducing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010539802A CN101975402B (en) | 2010-10-31 | 2010-10-31 | Boiler combustion energy-saving and emission-reducing system |
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| CN101975402A true CN101975402A (en) | 2011-02-16 |
| CN101975402B CN101975402B (en) | 2012-08-29 |
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| CN201010539802A Expired - Fee Related CN101975402B (en) | 2010-10-31 | 2010-10-31 | Boiler combustion energy-saving and emission-reducing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104857792A (en) * | 2015-05-29 | 2015-08-26 | 湖州环清环保科技有限公司 | Tube array type tail gas environmental protection treatment device |
| CN106390534A (en) * | 2016-10-27 | 2017-02-15 | 中交公局第二工程有限公司 | Device for four-stage sedimentation treatment of concrete curing water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104857792A (en) * | 2015-05-29 | 2015-08-26 | 湖州环清环保科技有限公司 | Tube array type tail gas environmental protection treatment device |
| CN106390534A (en) * | 2016-10-27 | 2017-02-15 | 中交公局第二工程有限公司 | Device for four-stage sedimentation treatment of concrete curing water |
| CN106390534B (en) * | 2016-10-27 | 2019-02-15 | 中交一公局第二工程有限公司 | A kind of concrete curing water level Four precipitation treatment device |
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| Publication number | Publication date |
|---|---|
| CN101975402B (en) | 2012-08-29 |
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Granted publication date: 20120829 Termination date: 20211031 |