CN201529485U - Dust-removing and desulfuration device for coal firing boiler - Google Patents
Dust-removing and desulfuration device for coal firing boiler Download PDFInfo
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- CN201529485U CN201529485U CN2009202107718U CN200920210771U CN201529485U CN 201529485 U CN201529485 U CN 201529485U CN 2009202107718 U CN2009202107718 U CN 2009202107718U CN 200920210771 U CN200920210771 U CN 200920210771U CN 201529485 U CN201529485 U CN 201529485U
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- dust
- waste liquid
- egr
- boiler
- liquid absorption
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Abstract
The utility model discloses a dust-removing and desulfuration device for a coal firing boiler. The dust-removing and desulfuration device comprises a dust-removing desulfurizer with a two-stage double cyclone structure and a waste liquid absorption and circulating device; an input end of the dust removing desulfurizer is connected with a flue gas output end of a boiler; a waste liquid output end of the dust-removing desulfurizer is connected with the input end of the waste liquid absorption and circulating device; a first output end of the waste liquid absorption and circulating device is connected to a slag flushing opening of the boiler, and a second output end of the waste liquid absorption and circulating device is connected with a water inflow end of the dust-removing desulfurizer; the soda lye wet-type flue gas desulfurization technology is adopted, the waste liquid absorption and circulating device can utilize waste soda lye as a supplemented soda lye source in light of local conditions, to realize waste recycling; at the same time, the waste liquid absorption and circulating device can be taken into a water power slag discharging system of the boiler according to a practical situation, so as to realize the purpose of the dust-removing and desulfuration device.
Description
Technical field
This novel practical technology relates to a kind of dust-removing desulfurating apparatus, and particularly a kind of industry coal-boiler that is applicable to can collect dedusting, desulfurization, dewatering integrated dust-removing desulfurating apparatus.
Background technology
At present, the kind of the flue gas purifying equipment that uses in industry coal-boiler has a lot, and wherein dust-remover device structure occupies bigger proportion.In this class dust-remover device, only include dedusting function and do not have desulfurizing function, function ratio is more single, is difficult to the environmental requirement that reaches current.
And when adopting the dust-remover device, problems such as burn into fouling, obstruction and the flue gas with water of ubiquity equipment if solve badly, will influence the normal operation of entire equipment, thus the purification function of restriction equipment.
The utility model content
The purpose of this utility model is to provide a kind of dust-removing desulfurating apparatus of coal-burning boiler, remedies the deficiency of existing dust-remover device, has unique twin-stage bispin wind structure, applied widely (10t/h～60t/h), compact conformation, technology advanced person, anticorrosion antiwear, reliable, easy to maintenance.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of dust-removing desulfurating apparatus of coal-burning boiler is characterized in that, it is absorbed by dust-removing desulfurizing device with twin-stage bispin wind structure and spray liquid and EGR constitutes.The input of described dust-removing desulfurizing device is connected with the flue gas output of boiler, the spray waste liquid output of described dust-removing desulfurizing device absorbs with described waste liquid and the input of EGR is connected, first output of described waste liquid absorption and EGR is connected to the flushing cinder mouth of boiler, and described waste liquid absorbs and second output of EGR is connected with the water inlet end of described dust-removing desulfurizing device.
In an embodiment of the present utility model, described dust-removing desulfurizing device is made of first cylindrical shell and second cylindrical shell, be connected by variable diameter passage between described first cylindrical shell and second cylindrical shell, described first cylindrical shell and second inner barrel are provided with the nozzle that some annular radial distribute by pipeline.
In an embodiment of the present utility model, described spray liquid absorption and EGR are by detritus tank, elevator pump, modified pond, settling tank, depositing reservoir and circulating pump constitute, described detritus tank, elevator pump, modified pond, settling tank, depositing reservoir and circulating pump are connected to each other successively, the spray waste liquid output of described dust-removing desulfurizing device is connected to described detritus tank, described lifting delivery side of pump is connected as first output of described waste liquid absorption and EGR and with the flushing cinder mouth of boiler, and described circulation delivery side of pump is connected as second output of described waste liquid absorption and EGR and with the water inlet end of described dust-removing desulfurizing device.
In an embodiment of the present utility model, the dust-removing desulfurating apparatus of described coal-burning boiler also comprises a computer control system, the control end of described computer control system absorbs with waste liquid with described dust-removing desulfurizing device respectively and each part of EGR is connected, and described computer control system also is connected with warning device.
Advantage of the present utility model is:
1, described dust-removing desulfurizing device adopts the ZJC-SS type desulfurizing dust-collector of granite double shell bispin wind structure, has compact conformation, and anticorrosion antiwear is reliable, easy to maintenance, characteristics such as long service life; Can increase gas-liquid during operation and effectively stop time of contact, help the natural subsidence of tiny water smoke and inter coagulation mutually, its desulfurization degree can reach more than 85%.
2, utilization gas-liquid rotational flow separation and inertial collision condensation principle, the eddy flow plate dehydrating demisting device of efficient low-resistance is installed near the output of described dust-removing desulfurizing device, this demist dewater unit selects for use grouan material to make, have sturdy and durable, be difficult for stopping up, the characteristics that dehydrating demisting efficient is high are innovation and the development in practice of dehydrating demisting technology.
3, in described spray waste liquid absorption and EGR, adopt tube settling, PH automatic control technology, guarantee to spray absorption liquid and keep clean, prevent that shower nozzle from stopping up; Reduced the fresh water consumption significantly,, compared 150,000 tons of annual using water wisely with original water film dedusting through measuring and calculating.
4, use advanced computer control system (PLC) reliably, form, can carry out effective monitoring safe, the normal operation of boiler desulfurization dust pelletizing system by Central Control Room host computer and the switch board that is arranged on the scene.At the deduster handling characteristics, be provided with the duty that comprises each desulfurizing dust-collector exhanst gas outlet temperature, circulated sprinkling pump, PH measuring pump, coagulant elevator pump, mixer etc., the water level of several main treatment ponds, the flow of pipeline and hydraulic pressure, one has fault to report to the police immediately, and on process chart the display alarm state, to guarantee to carry out effective real-time remote monitoring.
The dust-removing desulfurating apparatus of coal-burning boiler of the present utility model adopts soda lye wet flue gas desulfurization technology, and the spray waste liquid absorbs and EGR also can suit measures to local conditions to utilize spent lye to do to replenish alkali source, the treatment of wastes with processes of wastes against one another; Also can include the waterpower slag-tapping system of boiler in spraying waste liquid absorption and EGR simultaneously, realize the purpose of this utility model according to actual conditions.
Description of drawings
Fig. 1 is the structure and the process flow diagram of dust-removing desulfurating apparatus of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, the dust-removing desulfurating apparatus of coal-burning boiler of the present utility model, it is absorbed by dust-removing desulfurizing device 10 with twin-stage bispin wind structure and waste liquid and EGR 20 constitutes, the input 11 of dust-removing desulfurizing device 10 is connected with the flue gas output 31 of boiler 30, the waste liquid output 12 of dust-removing desulfurizing device 10 absorbs with waste liquid and the input 201 of EGR 20 is connected, first output 202 of waste liquid absorption and EGR 20 is connected to the flushing cinder mouth of boiler, and waste liquid absorbs and second output 203 of EGR 20 is connected with the water inlet end 13 of dust-removing desulfurizing device 10.
In the utility model, the ZJC-SS type desulfurizing dust-collector of dust-removing desulfurizing device 10 granite double shell bispin wind structures, constitute by first cylindrical shell and second cylindrical shell, be connected by the variable diameter passage tangent line between described first cylindrical shell and second cylindrical shell, described first cylindrical shell and second inner barrel are provided with the nozzle that some annular radial distribute by pipeline, because ZJC-SS type desulfurizing dust-collector is that the existing product concrete structure just has not been described in detail at this.
The flue gas of boiler 30 through economizer at first tangent line enter first cylindrical shell of dust-removing desulfurizing device 10, be provided with the nozzle that annular radial distributes in the dust-removing desulfurizing device 10, the soot dust granule thing in the flue gas, SO
2The atomizing shape soda absorption liquid that produces Deng exhaust emission and nozzle collides mutually in the rotation contact process and is blocked, absorbs.Obtain cooling off flue gas with preliminary purification is provided with nozzle then from the bottom variable diameter passage again subtangent enter second cylindrical shell, fine mist is condensed into big drop, flue gas is through the eddy flow plate then, reverse and the top-down soda absorption liquid range of atomization of bringing up through the multilayer nozzle carries out sufficient gas-liquid and contacts, with very high mass transfer rate and the SO in the flue gas
2Deng the acidic materials hybrid reaction, generate NaSO
3, NaHSO
3Etc. product, after flue gas purifies through chemical absorbing (simultaneously also with Physical Absorption), held back a large amount of water droplets by the throttle flaies in the dust-removing desulfurizing device 10 at last after, by output 14 by blower fan 40, chimney 50 qualified discharges.
In the utility model, waste liquid absorption and EGR 20 are by detritus tank 21, elevator pump 22, modified pond 23, settling tank 24, depositing reservoir 25 and circulating pump 26 constitute, detritus tank 21, elevator pump 22, modified pond 23, settling tank 24, depositing reservoir 25 and circulating pump 26 are connected to each other successively, the waste liquid output 12 of dust-removing desulfurizing device 10 is connected to detritus tank 21, the output of elevator pump 22 is connected as first output 202 of waste liquid absorption and EGR 20 and with the flushing cinder mouth of boiler, and the output of circulating pump 26 is connected as second output 203 of waste liquid absorption and EGR 20 and with the water inlet end 13 of dust-removing desulfurizing device 10.
Carrying the sluiceway the remittance boiler waterpower slag-tapping system such as soot dust granule through nozzle spray atomizing back absorption liquid from dust-removing desulfurizing device 10, in a plurality of detritus tanks 21, carry out liquid-solid separation after the flushing cinder system is got back in elevator pump 22 pressurizations one tunnel then by sedimentation, sieving; Another road promptly is introduced into modified pond 23, enters the settling tank 24 of inclined tube after adjusting by the stirring of dosing (alkali lye or flocculating agent) band, further carries out liquid-solid separation, purifies water.The water that overflows from the settling tank 24 of inclined tube enters depositing reservoir 25 subsequently and does further to purify, to avoid the nozzle in the dust-removing desulfurizing device 10 blocked, the clear liquid that finally is purified in the depositing reservoir 25 is squeezed in the desulfurizing dust-collector 10 by nozzle again through 26 pressurizations of spray circulating pump.Absorption liquid like this circulation in each process procedure of the modified-sedimentation defecate and purify-pressurization spray-absorption desulfurization (dedusting) that absorbs that desulfurization (dedusting)-the sedimentation sieving-Jia alkali adds coagulant gone round and begun again continually.
In the utility model, the dust-removing desulfurating apparatus of described coal-burning boiler also comprises a computer control system, the control end of described computer control system absorbs with waste liquid with dust-removing desulfurizing device 10 respectively and each part of EGR 20 is connected, and described computer control system also is connected with warning device.
Described computer control system is to dust-removing desulfurizing device 10 and waste liquid absorbs and the safety of EGR 20, normal operation implements to carry out effective monitoring, all control modules are carried out automation control and are manually controlled and combine, the Distributed Control System that described computer control system adopts FPGA control and Central Control Room host computer to form, can monitor process continuously, the instant ruuning situation that can reflect every dust-removing desulfurating apparatus on the display screen, comprise spray absorption liquid pH value, each desulfurizing dust-collector exhanst gas outlet temperature, the circulated sprinkling pump, the PH measuring pump, the coagulant elevator pump, the duty of mixer etc., the water level of several main treatment ponds, the flow of pipeline and hydraulic pressure, one has fault to report to the police immediately, and on process chart the display alarm state, to guarantee to carry out effective real-time remote monitoring.
On March 10th, 2008, detect through Minhang District environmental monitoring two stations, the concentration of emission of improved 5 boilers of dust-removing desulfurating apparatus of process coal-burning boiler of the present utility model all meets Shanghai City " emission standard of air pollutants for boilers DB31/387-2007 ", obtains good regulation effect.
1, flue dust measured concentration 19～69mg/m
3, conversion concentration average out to 76.4mg/
3
2, sulfur dioxide measured concentration 50～89mg/m
3, conversion concentration average out to 103.2mg/m
3
3, nitrogen oxide measured concentration 178～203g/m
3, conversion concentration average out to 289mg/m
3
The concrete data of 5 dust-removing desulfurizing devices 10 are as follows:
| Sequence number | Project | The 1# stove | The 2# stove | The 3# stove | The 4# stove | The 5# stove | Mean value |
| 2 | Water capacity | 8.3 | 9.2 | 8.3 | 8.5 | 7.3 | |
| 3 | Oxygen content % | 12.9 | 13.2 | 13.8 | 14.1 | 12.7 | |
| 4 | Mark dry flue gas amount | 24600 | 24500 | 29900 | 31200 | 46000 |
| Sequence number | Project | The 1# stove | The 2# stove | The 3# stove | The 4# stove | The 5# stove | Mean value |
| 6 | The actual measurement dust concentration | 19 | 28 | 69.2 | 56 | 64 | 47.2 |
| 7 | The conversion dust concentration | 30 | 46 | 112 | 104 | 90.2 | 76.4 |
| 8 | Actual measurement SO 2Concentration | 75 | 70 | 58 | 50 | 89 | 68.4 |
| 9 | Conversion SO 2Concentration | 108 | 104 | 94 | 85 | 125 | 103.2 |
| 10 | Actual measurement NO xConcentration | 196 | 192 | 178 | 179 | 203 | 189.6 |
| 11 | Conversion NO xConcentration | 282 | 286 | 288 | 303 | 286 | 289.0 |
To open 20 a tons/h, compare its SO under the nominal situation of two 10 tons/h boilers
2Discharge capacity reduce to present 7.5kg/h from original 45.7kg/h, rate of descent is 83.6%.
| Project | Concentration (mg/m before transforming 3) | Discharge capacity (kg/h) before transforming | Transform back concentration (mg/m 3) | Transform back discharge capacity (kg/h) | CER (kg/h) |
| Flue dust | 112～122 | 6.1 | 30～104 | 5.44 | 0.66 |
| Sulfur dioxide | 876～880 | 45.7 | 85～125 | 7.5 | 38.2 |
The dust-removing desulfurating apparatus of coal-burning boiler of the present utility model is effective to the control boiler waste gas to the influence of environment, can reach " emission standard of air pollutants for boilers " GB13271-2001 of country and Shanghai City provincial standard DB31/387-2007, result of use is good.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the dust-removing desulfurating apparatus of a coal-burning boiler, it is characterized in that, it is absorbed by dust-removing desulfurizing device with twin-stage bispin wind structure and waste liquid and EGR constitutes, the input of described dust-removing desulfurizing device is connected with the flue gas output of boiler, the waste liquid output of described dust-removing desulfurizing device absorbs with described waste liquid and the input of EGR is connected, first output of described waste liquid absorption and EGR is connected to the flushing cinder mouth of boiler, and described waste liquid absorbs and second output of EGR is connected with the water inlet end of described dust-removing desulfurizing device.
2. dust-removing desulfurating apparatus as claimed in claim 1, it is characterized in that, described dust-removing desulfurizing device is made of first cylindrical shell and second cylindrical shell, be connected by variable diameter passage between described first cylindrical shell and second cylindrical shell, described first cylindrical shell and second inner barrel are provided with the nozzle that some annular radial distribute by pipeline.
3. dust-removing desulfurating apparatus as claimed in claim 1, it is characterized in that, described waste liquid absorption and EGR are by detritus tank, elevator pump, modified pond, settling tank, depositing reservoir and circulating pump constitute, described detritus tank, elevator pump, modified pond, settling tank, depositing reservoir and circulating pump are connected to each other successively, the waste liquid output of described dust-removing desulfurizing device is connected to described detritus tank, described lifting delivery side of pump is connected as first output of described waste liquid absorption and EGR and with the flushing cinder mouth of boiler, and described circulation delivery side of pump is connected as second output of described waste liquid absorption and EGR and with the water inlet end of described dust-removing desulfurizing device.
4. dust-removing desulfurating apparatus as claimed in claim 1, it is characterized in that, the dust-removing desulfurating apparatus of described coal-burning boiler also comprises a computer control system, and the control end of described computer control system absorbs with waste liquid with described dust-removing desulfurizing device respectively and each part of EGR is connected.
5. dust-removing desulfurating apparatus as claimed in claim 4 is characterized in that described computer control system also is connected with warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202107718U CN201529485U (en) | 2009-10-15 | 2009-10-15 | Dust-removing and desulfuration device for coal firing boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202107718U CN201529485U (en) | 2009-10-15 | 2009-10-15 | Dust-removing and desulfuration device for coal firing boiler |
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| Publication Number | Publication Date |
|---|---|
| CN201529485U true CN201529485U (en) | 2010-07-21 |
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|---|---|---|---|
| CN2009202107718U Expired - Fee Related CN201529485U (en) | 2009-10-15 | 2009-10-15 | Dust-removing and desulfuration device for coal firing boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485321A (en) * | 2010-12-06 | 2012-06-06 | 张步芳 | Industrial fire coal boiler smoke desulphurization dedusting device |
| CN103785255A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Efficient fuel gas treatment system for boiler |
| CN103791510A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Boiler flue gas treatment system |
| CN105013268A (en) * | 2014-04-30 | 2015-11-04 | 刘炎军 | Process system for improving dust removal, desulfurization and demercuration efficiency of boiler flue gas |
-
2009
- 2009-10-15 CN CN2009202107718U patent/CN201529485U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485321A (en) * | 2010-12-06 | 2012-06-06 | 张步芳 | Industrial fire coal boiler smoke desulphurization dedusting device |
| CN103785255A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Efficient fuel gas treatment system for boiler |
| CN103791510A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Boiler flue gas treatment system |
| CN105013268A (en) * | 2014-04-30 | 2015-11-04 | 刘炎军 | Process system for improving dust removal, desulfurization and demercuration efficiency of boiler flue gas |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20121015 |