CN214468720U - Novel biomass boiler flue gas treatment system - Google Patents
Novel biomass boiler flue gas treatment system Download PDFInfo
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- CN214468720U CN214468720U CN202120467712.XU CN202120467712U CN214468720U CN 214468720 U CN214468720 U CN 214468720U CN 202120467712 U CN202120467712 U CN 202120467712U CN 214468720 U CN214468720 U CN 214468720U
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- China
- Prior art keywords
- intercommunication
- flue gas
- flue
- biomass boiler
- boiler
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Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 49
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000002028 Biomass Substances 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004202 carbamide Substances 0.000 claims abstract description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 14
- 230000023556 desulfurization Effects 0.000 claims abstract description 14
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 12
- 239000012719 wet electrostatic precipitator Substances 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 22
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 20
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 14
- 230000002745 absorbent Effects 0.000 claims description 7
- 239000002250 absorbent Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract 2
- 239000000428 dust Substances 0.000 description 20
- 239000000446 fuel Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 2
- 241001553178 Arachis glabrata Species 0.000 description 2
- 235000010777 Arachis hypogaea Nutrition 0.000 description 2
- 235000018262 Arachis monticola Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000020232 peanut Nutrition 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of boiler flue gas is administered and specifically relates to a novel biomass boiler flue gas processing system, including biomass boiler, wherein, biomass boiler intercommunication has urea solution jar and first flue three-way valve, first flue three-way valve intercommunication has SCR denitrifier and second flue three-way valve, SCR denitrifier intercommunication has the ammonia jar and second flue three-way valve to be linked together, second flue three-way valve intercommunication has the sack to remove the sackThe dirt ware, sack cleaner intercommunication has the water bath desulfurizing tower, water bath desulfurizing tower intercommunication has wet electrostatic precipitator, wet electrostatic precipitator intercommunication has the chimney, the utility model discloses can improve denitration efficiency, reduce the secondary pollution that ammonia escape caused, desulfurization effect is showing, and it is especially obvious to inhalable particulate matter emission control effect, flue gas particulate matter, SO after this system handles2、NOxThe emission concentration achieves the effect of ultralow emission of the boiler, and the method has wide application prospect in the field of boiler flue gas treatment.
Description
Technical Field
The utility model belongs to the technical field of boiler flue gas treatment and specifically relates to a novel biomass boiler flue gas processing system.
Background
At present, a biomass fuel boiler flue gas treatment system is mainly used for a coal-fired boiler flue gas treatment system, the structure is relatively simple, the depth of flue gas treatment is insufficient, and the requirement of current environmental protection on ultralow emission of the boiler is difficult to meet. Moreover, the flue gas generated by the biomass fuel has characteristics of itself, for example, the specific gravity of the generated smoke is lighter compared with that of a coal-fired boiler, and fine particles can easily escape if a primary dust removal device is used independently. And NO in flue gas generated by burning different biomass fuels such as straw, peanut shell, wood chips and the likexThere is also some variation in the content, e.g. by fixing. If SNCR denitration is independently adopted in a traditional boiler, the efficiency is low, and ammonia escapes to cause secondary pollution; if the SCR denitration device is used independently, the catalyst consumption is high, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The method aims to solve the problems that the efficiency is low, and ammonia escapes to cause secondary pollution if SNCR denitration is separately adopted in the traditional boiler; if the SCR denitration device is used independently, the catalyst consumption is high, and the cost is high.
The technical scheme of the utility model be, including biomass boiler, wherein, biomass boiler intercommunication has urea solution jar and first flue three way valve, first flue three way valve intercommunication has SCR denitrator and second flue three way valve, SCR denitrator intercommunication has ammonia water jar and second flue three way valve to be linked together, second flue three way valve intercommunication has the sack cleaner, the sack cleaner intercommunication has the water bath desulfurizing tower, the water bath desulfurizing tower intercommunication has wet electrostatic precipitator, wet electrostatic precipitator intercommunication has the chimney.
Preferably, a urea spray nozzle is fixed inside the biomass boiler, the urea spray nozzle is communicated with a urea spray controller outside the biomass boiler, and the urea spray controller is communicated with a urea solution tank.
Preferably, an ammonia water spray head is fixed inside the SCR denitration device, the ammonia water spray head is communicated with an ammonia water spray controller outside the SCR denitration device, and the ammonia water spray controller is communicated with an ammonia water tank.
Preferably, the water bath desulfurization tower is communicated with a water pump for spraying the desulfurization absorbent into the water bath desulfurization tower, and the water pump is communicated with a desulfurization absorbent storage tank.
Preferably, the wet electrostatic precipitator is electrically connected with a control cabinet which monitors flue gas data in the wet electrostatic precipitator in real time and adjusts voltage and water spraying times.
Adopt the technical scheme of the utility model can reach following beneficial effect: (1) the device can perform five-stage, four-stage and three-stage flue gas treatment conversion, and can be widely applied to boiler combustion of various biomass fuels, such as straws, peanut shells, wood chips and the like; (2) after flue gas generated by the biomass fuel boiler is treated by five-stage flue gas treatment processes such as SNCR denitration in the boiler, SCR denitration outside the boiler, bag-type dust remover, water bath desulfurization tower, wet type electric precipitation and the like, the discharged flue gas can reach particulate matters and SO2、NOxThe discharge concentrations are respectively lower than10mg\m3、35mg\m3、50mg\m3Ultra-low emission standards of (1); the technical scheme of the utility model has extensive application prospect in the boiler flue gas treatment field.
Drawings
Fig. 1 is the structure schematic diagram of the novel biomass boiler flue gas treatment system of the utility model.
The system comprises a biomass boiler 1, a biomass boiler 11, a urea solution tank 12, a urea spraying controller 13, a urea spray head 2, an SCR reactor 21, an ammonia water tank 22, an ammonia water spraying controller 3, a bag-type dust collector 4, a water bath desulfurization tower 41, a water pump 5, a wet electrostatic dust collector 51, a wet electrostatic dust collector controller 6, a chimney 7, a first flue three-way valve 8 and a second flue three-way valve.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention, and in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance throughout the present disclosure, it being understood that unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and can be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, novel biomass boiler flue gas treatment system, including biomass boiler 1, biomass boiler 1 has urea solution jar 11 and first flue three way valve 7 through the pipeline intercommunication, biomass boiler 1 is inside can dismantle through bolt fastening and be connected with urea shower nozzle 13, urea shower nozzle 13 has urea spraying controller 12 through the pipeline intercommunication outside biomass boiler 1, urea spraying controller 12 is linked together through the pipeline with urea solution jar 11, first flue three way valve 7 intercommunication has SCR denitrator 2 and second flue three way valve 8, make urea in the urea solution jar 11 carry the urea spraying ware in biomass boiler 1 through urea spraying controller 12, then spray the high temperature flue gas top in biomass boiler 1, urea is pyrolyzed under the effect of high temperature flue gas and generates NH under the pyrolysis of NH3With NO in boiler flue gasxReaction to form N2And H2And O, conveying the reacted dust-containing flue gas into the SCR reactor through a pipeline and a first flue three-way valve 7. SCR denitrator 2 intercommunication has ammonia jar 21 and second flue three way valve 8 to be linked together, and SCR denitrator 2 is inside to be connected with the ammonia shower nozzle through bolt fastening can dismantle, and the ammonia shower nozzle has ammonia spray controller 22 through the pipeline intercommunication outside SCR denitrator 2, and ammonia spray controller 22 is linked together through the pipeline with ammonia jar 21 for escape NH in following biomass boiler 13Continuously reacting with NO in the flue gas under the action of a catalyst in the SCR denitrator 2xReaction to eliminate NO in boiler fumex(ii) a In addition, the ammonia concentration in the SCR denitration device 2 is monitored in real time through the ammonia water spray controller 22, such as NH escaped from the biomass boiler 13When the ammonia water is insufficient, the ammonia water is pumped from the ammonia water tank 21 for supplement, and the effect of saving the ammonia water is achieved. The second flue three-way valve 8 is communicated with the bag-type dust remover 3, so that the denitrated dust-containing flue gas is conveyed to a bag for removal through a pipeline and the second flue three-way valve 8The dust collector 3 removes the larger solid particles from the flue gas. The bag-type dust collector 3 is communicated with a water bath desulfurizing tower 4, the water bath desulfurizing tower 4 is communicated with a water pump 41 for spraying a desulfurizing absorbent into the water bath desulfurizing tower 4 through a pipeline, the water pump 41 is communicated with a desulfurizing absorbent storage tank through a pipeline, SO that the flue gas after primary dust removal is conveyed into the water bath desulfurizing tower 4 through a pipeline, and then the desulfurizing absorbent and SO in the flue gas are sprayed into the desulfurizing tower through the water pump 41xReacting to remove SO in the flue gasx. The water bath desulfurization tower 4 is communicated with a wet electrostatic dust collector 5 through a pipeline, the wet electrostatic dust collector 5 is electrically connected with a control cabinet 51 for monitoring the flue gas data in the wet electrostatic dust collector 5 in real time and adjusting the voltage and the water spraying frequency, so that the flue gas after desulfurization treatment is conveyed into the wet electrostatic dust collector 5 through the pipeline, tiny particles in the flue gas are captured through the adsorption effect of static electricity, meanwhile, the control cabinet 51 monitors the flue gas data in the wet electrostatic dust collector 5 in real time and adjusts the voltage and the water spraying frequency, and the good working state of the wet electrostatic dust collector 5 is kept. The wet electrostatic precipitator 5 is communicated with a chimney 6 through a pipeline, so that clean flue gas after further dust removal is conveyed to the chimney 6 through the pipeline and then discharged into the atmosphere.
The novel biomass boiler flue gas treatment system shown in fig. 1 is a five-stage flue gas treatment process in which denitration in a furnace, SCR denitration outside the furnace, a bag-type dust remover 3, a water bath desulfurization tower 4, wet electric dust removal and the like are put into operation. NO in boiler flue gas when main raw materials combusted by biomass boiler 1 are changedxThe content can be different, and NO in the boiler can be checked after the main biomass fuel is replacedxAccording to the content of NO in the flue gasxThe ammonia water sprayer or the SCR denitration device 2 in the biomass boiler 1 can be respectively closed by adjusting the urea spraying controller 12, the first flue three-way valve 7 and the second flue three-way valve 8 according to the content, and the whole system is changed into a four-stage flue gas treatment process. NO in flue gas when burning wood-chip-like biofuel in boilerxLess content, can close aqueous ammonia spray thrower and SCR denitrator 2 in biomass boiler 1 simultaneously, falls flue gas treatment process into tertiary to avoid SCR denitrator 2 through first flue three way valve 7 and second flue three way valve 8, can reduce the cigaretteThe air resistance protects the catalyst in the equipment, and can achieve the purpose of saving energy and materials.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The utility model provides a novel biomass boiler flue gas processing system, includes biomass boiler (1), its characterized in that, biomass boiler (1) intercommunication has urea solution jar (11) and first flue three way check valve (7), first flue three way check valve (7) intercommunication has SCR denitrifier (2) and second flue three way check valve (8), SCR denitrifier (2) intercommunication has ammonia jar (21) and second flue three way check valve (8) to be linked together, second flue three way check valve (8) intercommunication has sack cleaner (3), sack cleaner (3) intercommunication has water bath desulfurizing tower (4), water bath desulfurizing tower (4) intercommunication has wet electrostatic precipitator (5), wet electrostatic precipitator (5) intercommunication has chimney (6).
2. The novel biomass boiler flue gas treatment system according to claim 1, wherein a urea spray nozzle (13) is fixed inside the biomass boiler (1), the urea spray nozzle (13) is communicated with a urea spray controller (12) outside the biomass boiler (1), and the urea spray controller (12) is communicated with a urea solution tank (11).
3. The novel biomass boiler flue gas treatment system according to claim 1, wherein an ammonia water spray head is fixed inside the SCR denitrator (2), the ammonia water spray head is communicated with an ammonia water spray controller (22) outside the SCR denitrator (2), and the ammonia water spray controller (22) is communicated with an ammonia water tank (21).
4. The novel biomass boiler flue gas treatment system according to claim 1, wherein the water bath desulfurization tower (4) is communicated with a water pump (41) for spraying the desulfurization absorbent into the water bath desulfurization tower (4), and the water pump (41) is communicated with a desulfurization absorbent storage tank.
5. The novel biomass boiler flue gas treatment system according to claim 1, wherein the wet electrostatic precipitator (5) is electrically connected with a control cabinet (51) for monitoring flue gas data in the wet electrostatic precipitator (5) in real time and adjusting voltage and water spraying frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467712.XU CN214468720U (en) | 2021-03-04 | 2021-03-04 | Novel biomass boiler flue gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467712.XU CN214468720U (en) | 2021-03-04 | 2021-03-04 | Novel biomass boiler flue gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214468720U true CN214468720U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120467712.XU Expired - Fee Related CN214468720U (en) | 2021-03-04 | 2021-03-04 | Novel biomass boiler flue gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214468720U (en) |
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2021
- 2021-03-04 CN CN202120467712.XU patent/CN214468720U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |