CN105485706A - Boiler smoke cyclone separation recycling device and smoke recycling method thereof - Google Patents
Boiler smoke cyclone separation recycling device and smoke recycling method thereof Download PDFInfo
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- CN105485706A CN105485706A CN201510809478.3A CN201510809478A CN105485706A CN 105485706 A CN105485706 A CN 105485706A CN 201510809478 A CN201510809478 A CN 201510809478A CN 105485706 A CN105485706 A CN 105485706A
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Abstract
The invention relates to a boiler smoke cyclone separation recycling device and a smoke recycling method thereof. According to the technical scheme, the device is characterized in that a flue of a boiler with a return feeder is provided with an electric bag dust remover, two parallel cyclone separators are arranged between the flue of the boiler and the electric bag dust remover, first discharging valves are arranged at the discharging ends of the cyclone separators, a pipeline below the first discharging valves is communicated with a first bin pump, a second discharging valve and a second bin pump are arranged at the discharging end of the electric bag dust remover, a discharging port pipeline of the first bin pump and a discharging port pipeline of the second bin pump are connected in series to be communicated with a dust pipeline, the two ends of the dust pipeline are communicated with the return feeder and a dust field of the boiler respectively, the discharging port pipeline of the first bin pump is connected to the end, close to the return feeder of the boiler, of the dust pipeline, and the discharging port pipeline of the second bin pump is connected to the end, away from the return feeder of the boiler, of the dust pipeline; and the first bin pump and the second bin pump are connected to a compressed air pipe so that controllable compressed air can be introduced; and a control valve a and a control valve b are arranged at the two ends of a joint of the dust pipeline and the discharging port pipeline of the first bin pump.
Description
Technical field
The present invention relates to a kind of method of boiler smoke cyclonic separation recycle device and fume recovery utilization thereof, belong to a kind of environmental protection equipment.
Background technology
Only be provided with the CFBB flue gas processing device of electric bag dedusting, because dust concentration in flue gas is large, the load that dust removal process causes electrostatic fabric filter is large, and fault rate is high.And in the flue gas of discharging, dust concentration is also high, can not meet environmental protection production requirement.
CFBB flue gas concentration is large, and in the flue gas of discharge, phosphorus content is high, illustrates that the combustion rate of fuel is low, and exhaust gas temperature low needs passes into more fuel, and energy consumption is high, and it is also serious that dust does other process wastes after only collecting.
Summary of the invention
The object of this invention is to provide a kind of method of boiler smoke cyclonic separation recycle device and fume recovery utilization thereof, solve and discharge the high problem of flue dust China Grey dust concentration, improve energy utilization rate simultaneously.
For achieving the above object, the technical solution used in the present invention is:
A kind of boiler smoke cyclonic separation recycle device, flue with the boiler of material returning device is provided with electrostatic fabric filter, it is characterized in that, two cyclone separators arranged side by side are established between boiler flue and electrostatic fabric filter, the discharging end of cyclone separator establishes the first baiting valve, the below pipeline of the first baiting valve passes in the first storehouse pump, the discharging end of electricity bag dedusting establishes the second baiting valve and the second storehouse pump, first storehouse pump is connected with the discharge opening pipeline of the second storehouse pump and is passed into dust pipeline, dust pipe ends passes into material returning device and the Hui Chang of boiler respectively, the discharge opening pipeline of the first storehouse pump is connected to the nearly boiler return feeder end of dust pipeline, the discharge opening pipeline of the second storehouse pump connects the boiler return feeder end far away of dust pipeline, first storehouse pump and the second storehouse pump access compression gas pipe respectively and pass into controlled compressed air, and dust pipeline establishes control valve a and control valve b at the two ends of the first storehouse pump discharge opening pipeline access place.
As preferably, the flue of described boiler passes into the entrance of two cyclone separators respectively, passes into electrostatic fabric filter after the outlet of two cyclone separators accesses same flue.
As preferably, the diameter of described cyclone separator is 3m.
As preferably, described dust pipeline uses abrasion-proof earthenware duct.
Boiler smoke cyclonic separation recycle device is utilized to carry out the method for fume recovery utilization, comprise the following steps:
Flue gas in boiler flue was carried out dust separation by cyclone separator before electric cleaner, and the most dusts in flue gas are separated postprecipitation through cyclone separator, and the flue gas that dustiness is less passes into electrostatic fabric filter and continues process;
Dust after previous step is separated enters in the first storehouse pump by the first baiting valve after unlatching first baiting valve;
When boiler needs to improve smoke temperature, opening controlling valve a, closed control valve b, be delivered in the material returning device of boiler through pump by dust after in the first storehouse pump, dust passes into Compressed Gas, and the dust be delivered in boiler return feeder passes in the lower furnace portion of boiler and burns;
When boiler does not need to improve smoke temperature, opening controlling valve b, closed control valve a, be delivered to grey field through pump by dust after dust passes into Compressed Gas in the first storehouse pump.
The invention has the advantages that:
The dust got off by cyclone collection enters fire box by storehouse transport pump to material returning device ash discharging pipe section, reduces smoke density, reduces unburned carbon in flue dust, improve upper furnace temperature, strengthen heat absorption power, improve boiler thermal output, improve furnace outlet flue gas and material returning device outlet temperature.Decrease the wearing and tearing of electrostatic fabric filter cloth bag, improve the efficiency that lime stone uses.
Accompanying drawing explanation
Fig. 1 is each parts connection diagram of the present invention.
1, boiler, 2, flue, 3, cyclone separator, 4, electrostatic fabric filter, 5, chimney, 6, cold air separator, 7, material returning device, 8, dust pipeline, 9, control valve a, 10, the first baiting valve, 11, the first storehouse pump, 12, control valve b, 13, compression gas pipe, 14, the second baiting valve, the 15, second storehouse pump.
Detailed description of the invention
Each modular construction figure of the present invention is as Fig. 1
Boiler smoke cyclonic separation recycle device, flue with the boiler of material returning device is provided with electrostatic fabric filter, two cyclone separators arranged side by side are established between boiler flue and electrostatic fabric filter, the discharging end of cyclone separator establishes the first baiting valve, the below pipeline of the first baiting valve passes in the first storehouse pump, the discharging end of electricity bag dedusting establishes the second baiting valve and the second storehouse pump, first storehouse pump is connected with the discharge opening pipeline of the second storehouse pump and is passed into dust pipeline, dust pipe ends passes into material returning device and the Hui Chang of boiler respectively, the discharge opening pipeline of the first storehouse pump is connected to the nearly boiler return feeder end of dust pipeline, the discharge opening pipeline of the second storehouse pump connects the boiler return feeder end far away of dust pipeline, first storehouse pump and the second storehouse pump access compression gas pipe respectively and pass into controlled compressed air, and dust pipeline establishes control valve a and control valve b at the two ends of the first storehouse pump discharge opening pipeline access place.
The flue of boiler passes into the entrance of two cyclone separators respectively, passes into electrostatic fabric filter after the outlet of two cyclone separators accesses same flue.The diameter of cyclone separator is 3m.Dust pipeline uses abrasion-proof earthenware duct.
Utilize boiler smoke cyclonic separation recycle device to carry out the method for fume recovery utilization, comprise the following steps:
Flue gas in boiler flue was carried out dust separation by cyclone separator before electric cleaner, and the most dusts in flue gas are separated postprecipitation through cyclone separator, and the flue gas that dustiness is less passes into electrostatic fabric filter and continues process;
Dust after previous step is separated enters in the first storehouse pump by the first baiting valve after unlatching first baiting valve;
When boiler needs to improve smoke temperature, opening controlling valve a, closed control valve b, be delivered in the material returning device of boiler through pump by dust after in the first storehouse pump, dust passes into Compressed Gas, and the dust be delivered in boiler return feeder passes in the lower furnace portion of boiler and burns;
When boiler does not need to improve smoke temperature, opening controlling valve b, closed control valve a, be delivered to grey field through pump by dust after dust passes into Compressed Gas in the first storehouse pump.
Operation operation principle of the present invention: the dust got off by cyclone collection enters fire box by storehouse transport pump to material returning device ash discharging pipe section, effectively smoke density can be reduced after dust enters fire box, because the particle diameter of dust is little, fully can contact with oxygen in burner hearth, sufficient combustion, effectively reduces unburned carbon in flue dust, and dust burning can improve upper furnace temperature, improve boiler thermal output, improve furnace outlet flue gas and material returning device outlet temperature simultaneously.The ash discharge dust concentration of boiler reduces, and this can reduce the wearing and tearing of electrostatic fabric filter cloth bag, improves the efficiency that lime stone uses.Reduce operating cost and the fuel consumption of equipment on the whole.
For 260t/h CFBB one, first between CFBB flue gas semi-dry desulphurization tower and electrostatic fabric filter, set up 2 cyclone separators, between cyclone separator and material returning device ash discharging pipe section.Connect with wear-resistant ceramic pipeline, described wear-resistant ceramic pipeline is provided with storehouse pump one, butterfly valve, each one of flowmeter.The flue dust that cyclone collection gets off is delivered to material returning device ash discharging pipe through wear-resistant ceramic pipeline and enters lower furnace portion burning.
Actual investment improvement expenses of the present invention is 200,000 yuan.
The comparative analysis of boiler operating state before and after repacking:
As can be seen from the table:
(1) before and after 260t/h boiler improvement, under equal load condition, steam pressure and variations in temperature not quite, all reach design load,
(2) furnace outlet gas temperature improves more, improves about 80 DEG C,
(3) also corresponding raising is more for material returning device temperature, and about 75 DEG C, this plays great role to the minimizing of unburned carbon in flue dust,
(4) unburned carbon in flue dust reduces to 4% by original 12%, reduces 8%.Calculate after tested and can save about 5700 tons, raw coal every year,
(5) smoke density is by original 20mg/m
3be down to 10mg/m
3,
(6) improve lime stone service efficiency, reduce desulphurization cost,
In a word, a kind of CFBB Novel cyclone separating device flue dust recovery device achieves good economic benefit and social benefit in the application of 260t/h CFBB.
Claims (5)
1. a boiler smoke cyclonic separation recycle device, flue (2) with the boiler (1) of material returning device (7) is provided with electrostatic fabric filter (4), it is characterized in that, two cyclone separators (3) arranged side by side are established between the flue (2) of boiler (1) and electrostatic fabric filter (4), the discharging end of cyclone separator (3) establishes the first baiting valve (10), the below pipeline of the first baiting valve (10) passes in the first storehouse pump (11), the discharging end of electrostatic fabric filter (7) establishes the second baiting valve (14) and the second storehouse pump (15), first storehouse pump (11) is connected with the discharge opening pipeline of the second storehouse pump (15) and is passed into dust pipeline (8), dust pipeline (8) two ends pass into the material returning device (7) of boiler and grey field respectively, the discharge opening pipeline of the first storehouse pump is connected to the nearly boiler return feeder end of dust pipeline, the discharge opening pipeline of the second storehouse pump (15) connects boiler return feeder far away (7) end of dust pipeline (8), first storehouse pump (11) and the second storehouse pump (15) access compression gas pipe (13) respectively and pass into controlled compressed air, and dust pipeline establishes control valve a(9 at the two ends of the first storehouse pump discharge opening pipeline access place) and control valve b(12).
2. boiler smoke cyclonic separation recycle device according to claim 1, it is characterized in that, the flue (2) of described boiler (1) passes into the entrance of two cyclone separators (3) respectively, passes into electrostatic fabric filter (4) after the outlet of two cyclone separators (3) accesses same flue (2).
3. boiler smoke cyclonic separation recycle device according to claim 1 and 2, is characterized in that, the diameter of described cyclone separator (3) is 3m.
4. boiler smoke cyclonic separation recycle device according to claim 3, is characterized in that, described dust pipeline (8) uses abrasion-proof earthenware duct.
5. utilize arbitrary described boiler smoke cyclonic separation recycle device in claim 1-4 to carry out a method for fume recovery utilization, it is characterized in that, comprise the following steps:
Flue gas in boiler flue was carried out dust separation by cyclone separator before electric cleaner, and the most dusts in flue gas are separated postprecipitation through cyclone separator, and the flue gas that dustiness is less passes into electrostatic fabric filter and continues process;
Dust after previous step is separated enters in the first storehouse pump by the first baiting valve after unlatching first baiting valve;
When boiler needs to improve smoke temperature, opening controlling valve a, closed control valve b, be delivered in the material returning device of boiler through pump by dust after in the first storehouse pump, dust passes into Compressed Gas, and the dust be delivered in boiler return feeder passes in the lower furnace portion of boiler and burns;
When boiler does not need to improve smoke temperature, opening controlling valve b, closed control valve a, be delivered to grey field through pump by dust after dust passes into Compressed Gas in the first storehouse pump.
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| CN201510809478.3A CN105485706A (en) | 2015-11-20 | 2015-11-20 | Boiler smoke cyclone separation recycling device and smoke recycling method thereof |
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| CN201510809478.3A CN105485706A (en) | 2015-11-20 | 2015-11-20 | Boiler smoke cyclone separation recycling device and smoke recycling method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361687A (en) * | 2018-04-11 | 2018-08-03 | 山西沁新能源集团股份有限公司 | A kind of boiler dusting ash extracorporal circulatory system guarantee flue gas ultra-clean exhaust system |
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| JPH05156268A (en) * | 1991-10-24 | 1993-06-22 | Toa Netsuken Kk | Method for recycling and utilizing heavy oil ash collected with electric dust collector |
| CN1718556A (en) * | 2004-07-09 | 2006-01-11 | 河北理工大学 | Predecomposition kiln by pass air relief and coal gangue dewatering technology |
| CN203030157U (en) * | 2013-01-29 | 2013-07-03 | 嘉兴新嘉爱斯热电有限公司 | Smoke-dust treating device of biomass-fired boiler |
| CN103542407A (en) * | 2013-10-28 | 2014-01-29 | 凤阳海泰科能源环境管理服务有限公司 | Flying ash recirculating device and flying ash recirculating method for circulating fluidized bed boiler |
| CN203757728U (en) * | 2013-12-30 | 2014-08-06 | 川崎重工业株式会社 | Stocker type incinerator |
| CN104531232A (en) * | 2014-12-30 | 2015-04-22 | 中国天辰工程有限公司 | Novel process for removing ashes from synthetic gas and recovering washing heat |
| CN205174413U (en) * | 2015-11-20 | 2016-04-20 | 张建存 | Boiler smoke whirlwind separation recycle device |
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2015
- 2015-11-20 CN CN201510809478.3A patent/CN105485706A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05156268A (en) * | 1991-10-24 | 1993-06-22 | Toa Netsuken Kk | Method for recycling and utilizing heavy oil ash collected with electric dust collector |
| CN1718556A (en) * | 2004-07-09 | 2006-01-11 | 河北理工大学 | Predecomposition kiln by pass air relief and coal gangue dewatering technology |
| CN203030157U (en) * | 2013-01-29 | 2013-07-03 | 嘉兴新嘉爱斯热电有限公司 | Smoke-dust treating device of biomass-fired boiler |
| CN103542407A (en) * | 2013-10-28 | 2014-01-29 | 凤阳海泰科能源环境管理服务有限公司 | Flying ash recirculating device and flying ash recirculating method for circulating fluidized bed boiler |
| CN203757728U (en) * | 2013-12-30 | 2014-08-06 | 川崎重工业株式会社 | Stocker type incinerator |
| CN104531232A (en) * | 2014-12-30 | 2015-04-22 | 中国天辰工程有限公司 | Novel process for removing ashes from synthetic gas and recovering washing heat |
| CN205174413U (en) * | 2015-11-20 | 2016-04-20 | 张建存 | Boiler smoke whirlwind separation recycle device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361687A (en) * | 2018-04-11 | 2018-08-03 | 山西沁新能源集团股份有限公司 | A kind of boiler dusting ash extracorporal circulatory system guarantee flue gas ultra-clean exhaust system |
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Application publication date: 20160413 |
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