CN204543944U - A kind ofly combine the device removed with heavy metal for boiler smoke particle - Google Patents
A kind ofly combine the device removed with heavy metal for boiler smoke particle Download PDFInfo
- Publication number
- CN204543944U CN204543944U CN201520207706.5U CN201520207706U CN204543944U CN 204543944 U CN204543944 U CN 204543944U CN 201520207706 U CN201520207706 U CN 201520207706U CN 204543944 U CN204543944 U CN 204543944U
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- Prior art keywords
- district
- heavy metal
- spray gun
- adsorbent
- fixed bed
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 33
- 239000002245 particle Substances 0.000 title claims abstract description 14
- 239000000779 smoke Substances 0.000 title claims abstract description 10
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003546 flue gas Substances 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 24
- 230000003197 catalytic effect Effects 0.000 claims abstract description 18
- 239000002594 sorbent Substances 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 14
- 238000010410 dusting Methods 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 239000003463 adsorbent Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052785 arsenic Inorganic materials 0.000 abstract description 10
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002956 ash Substances 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 239000010881 fly ash Substances 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- XBBAEVVIDHSGKC-UHFFFAOYSA-N [As].[Hg] Chemical compound [As].[Hg] XBBAEVVIDHSGKC-UHFFFAOYSA-N 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses and a kind ofly combine the device removed with heavy metal for boiler smoke particle, this device comprises electric precipitation district, heavy metal catalyzed oxidation district, a few part in sorbent injection district and bag-type dusting district.Flow to direction along flue gas in device and first electric precipitation district is set, efficiently to trap flue gas particles and particulate form heavy metal Hg, arsenic etc.; Mercury catalytic oxidant fixed bed is set subsequently, realizes in flue gas nonvalent mercury to mercuric conversion; Sorbent injection district is set after fixed bed with heavy metals such as adsorbing and removing mercury arsenic; The active carbon of Adsorption of Heavy Metals and escape flying dust enter a bag district and are captured down.What unload under electricity district ash bucket is original matter flyash, the active carbon for Adsorption of Heavy Metals unloaded under bag district ash bucket and a small amount of flyash, and a small amount of outer row, major part is circulated to pipeline and again sprays into flue gas recirculation utilization.The device that the utility model provides effectively can realize particle and remove with combining of heavy metal, greatly improves the efficiency of coal-fired flue-gas heavy metal removing.
Description
Technical field
The utility model belongs to using energy source and field of environment protection, relates to a kind ofly combining the device removing particle and heavy metal in fire coal boiler fume.
Background technology
Mercury, arsenic are the chemical substances with serious physiological-toxicity, have extremely strong bioaccumulation and carcinogenic teratogenesis, are the great environmental problem threatening human health and ecological safety.A large amount of consumption of coal in global range, make fire coal become arsenic, the topmost man-made pollution source of mercury.Continue flue dust, SO in various countries
2after NOx, generally using the another emphasis of heavy metal as flue gas polution control, particularly mercury, arsenic are become to the focus of research.Increasingly strict along with coal-fired flue-gas heavy metals emission standard, adopts suitable technical method to realize the efficient removal of heavy metal in flue gas imperative.
Mercury in flue gas is with particle mercury Hg
p, elemental mercury Hg
0with oxidation state mercury Hg
2+three kinds of forms exist, wherein particle mercury Hg
premove by deduster, oxidation state mercury Hg
2+absorbing and removing in system can be removed in wet type, also can be converted into particulate form by absorption and be captured and remove, element state Hg
0owing to becoming gaseous state, and hydrophily is poor, thus deduster and wet type to remove system all low to its removal efficiency.Although when flue gas is by SCR system, minority elemental mercury Hg
0oxidation state mercury Hg can be oxidized to
2+but, still have the elemental mercury Hg of suitable vast scale
0do not remove by conventional flue gas purification system.For mercury pollution problem, research major part concentrates on two aspects both at home and abroad at present.One is the adsorbent studying high-efficiency and economic, and two is elemental mercury is changed into oxidation state mercury Hg
2+, utilize gaseous state bivalent mercury to have more easily by flying dust or adsorbent and feature soluble in water, a part of gaseous state bivalent mercury absorption changed into solid granulates mercury and removes in deduster, or change into bivalent mercury by wet flue gas desulfurizer absorbing and removing.Therefore, a kind of potential demercuration mode utilizes catalyst by the Hg in flue gas
0oxidation, improves Hg in flue gas
2+ratio, thus increase downstream deduster and WFGD to the capture rate of mercury.
In addition in dearsenification, CaO, active carbon, metal oxide etc. are all more effective adsorbents, and can pass through the form of chemisorbed or reaction, the gaseous state arsenic in flue gas is combined and it is changed into particulate form, thus realizes dust arrester catching arsenic.Meanwhile, wet desulphurization device heavy metal arsenic also has certain removal efficiency.
Utility model content
The purpose of this utility model is to provide a kind ofly combines the device removed with heavy metal for boiler smoke particle, this device contains the adsorbing and removing method of catalytic oxidative desulfurization method and recyclable adsorbent for heavy metal removing, by the structural design to this device, effectively can improve coal-fired flue-gas heavy metal removing efficiency, adsorbent can be eliminated in heavy metal removing process on the impact of total utilization of PCA simultaneously, realize recycling of adsorbent, save adsorbent, reduce and remove cost.
The device that the utility model provides, comprises the housing of hollow, flows to direction along flue gas, sets gradually electric precipitation district in described housing, mercury catalytic oxidant fixed bed, sorbent injection district and bag-type dusting district; Ash bucket is provided with below electric precipitation district and bag-type dusting district.The side of housing is provided with smoke inlet, and the opposite side of housing is provided with exhanst gas outlet.
Described mercury catalytic oxidant fixed bed, can arrange bed and be at least one deck, if described fixed bed is multiple, the horizontal direction that multiple fixed bed should be kept to enter along flue gas is set up in parallel successively.Described fixed bed comprises ventilative grid I and ventilative grid II, is filled with catalytic oxidant between ventilative grid I and II, and catalytic oxidant adopts the form of catalyst bag to be seated between ventilative grid.The top of described fixed bed corresponding housing is provided with closed charging door, and the below of corresponding housing is provided with closed discharge port.Described loading, unloading material mouth is provided with electrically operated valve, realizes automatically completing handling material.
A kind of sorbent injection system that the utility model provides, this spraying system is made up of transfer pipeline and injection line two parts, adsorbent conveyance conduit is by stretching in device above housing, the some equidistant uniform vertical of adsorbent jet pipe are had to be communicated with on adsorbent conveyance conduit, the multiple spray gun of device on adsorbent jet pipe, connect with flexible pipe between spray gun and jet pipe, spray gun is set in the both sides of jet pipe, it is vertical with flue gas stream direction that spray gun ejection adsorbent direction is set.On adjacent two jet pipes, spray gun evenly staggers arrangement, and during to ensure spray gun ejection adsorbent, both sides spray gun fully increases adsorbent coverage rate, and the adsorbent that simultaneously it also avoid the ejection of offside spray gun blocks spray gun mutually.
Mercury catalytic oxidant fixed bed is set, transforming the nonvalent mercury not easily removed is bivalent mercury, improve mercuric ratio in flue gas, being beneficial to initial adsorbent material sprays into adsorbing and removing heavy metal on the one hand, improve adsorption efficiency, on the other hand, along with catalytic oxidation, the raising of bivalent mercury ratio in flue gas, can make WFGD equipment give full play to its demercuration.Flue gas is by after above-mentioned system, and WFGD can almost remove completely by bivalent mercury and heavy metal arsenic in flue gas behind bag district.
Before sack cleaner, arrange sorbent injection district, activated carbon of sorbent can be made to be attached to cloth bag surface, be define fixed bed of sorbent on filter bag surface actually, therefore this setting also achieves high-efficiency mercury removal.
The beneficial effects of the utility model are functions that this device effectively utilizes prior art cooperation-removal heavy metal, and heavy metal removing efficiency is high; Achieve heavy metal and particulate matter removing integration, the automated handling material of fixed bed can be realized simultaneously.Utilize this device, the flyash of electric district trapping can ensure the quality of ash, and ensure that the later use of flyash is worth, adsorbent is sprayed by described spraying system, is well dispersed in flue gas, effectively can improves adsorption efficiency, thus realize efficient removal heavy metal.Meanwhile, sorbent circulation utilizes and reduces adsorbent consumption, reduces demercuration cost.
Accompanying drawing explanation
Fig. 1 a kind ofly combines the installation drawing removed with heavy metal for boiler smoke particle.
Fig. 2 is sorbent injection system schematic diagram
In figure, 1-housing, 2-electric precipitation district, 3-mercury catalytic oxidant fixed bed, 4-sorbent injection system, 4-1-adsorbent conveyance conduit, 4-2-jet pipe, 4-3-spray gun, 5-bag-type dusting district, 6-ash bucket, 7-gas approach, 8-exhanst gas outlet, 9-circulating line
Detailed description of the invention
Below in conjunction with accompanying drawing, device and method of the present invention is described in detail.
See Fig. 1, a kind ofly combine the device removed with heavy metal for boiler smoke particle, direction is flow to along flue gas, in the housing (1) of hollow, be disposed with electric precipitation district (2), mercury catalytic oxidant fixed bed (3), sorbent injection system (4) and bag-type dusting district (5); Ash bucket (6) is provided with below electric precipitation district and bag-type dusting district.The side of housing is provided with smoke inlet (7), and the opposite side of housing is provided with exhanst gas outlet (8).
First coal-burning boiler high-concentration fume carries out dust removal and filtration through electric precipitation district (2), remove most fly ash particulate and partial particulate state heavy metal, and be stored in ash bucket 1, for the recycling of flyash, then flue gas is through mercury catalytic oxidant fixed bed (3), and in flue gas, most nonvalent mercury is converted into bivalent mercury;
The spraying system (4) being used for active carbon ejection is set between mercury catalytic oxidant fixed bed (3) and bag-type dusting district (5), the modified active carbon of bromination, by pneumatic convey in pipeline (4-1) between mercury catalytic oxidation fixed bed and bag district, the some equidistant uniform vertical of adsorbent jet pipe are had to be communicated with on adsorbent conveyance conduit (4-1), the multiple spray gun of device on jet pipe, Powdered Activated Carbon is through lance ejection, be well dispersed in flue gas, in the flue gas of mercury catalytic oxidation fixed bed most of bivalent mercury and heavy metal arsenic by activated carbon of sorbent and flying dust adsorb,
Flue gas enters a bag district subsequently, and activated carbon of sorbent is attached to cloth bag surface, and filter bag surface defines ADSORPTION IN A FIXED BED demercuration actually.Active carbon and escape flying dust trap and are stored in ash bucket 2 by bag-type dusting district (5), and in ash bucket 2, the 30%-40% of mixture arranges outward, and all the other 60%-70% are circulated to pipeline (9) and again recycle as supplementary the spraying into of adsorbent;
By the flue gas of sack cleaner, enter WFGD, be not tightly held by activated carbon bivalent mercury and heavy metal arsenic that agent adsorbs by absorbing and removing.
Claims (5)
1. combine the device removed with heavy metal for boiler smoke particle for one kind, it is characterized in that, comprise the housing (1) of hollow, direction is flow to along flue gas, electric precipitation district (2) is disposed with in described housing, mercury catalytic oxidant fixed bed (3), sorbent injection system (4) and bag-type dusting district (5); Ash bucket (6) is provided with below electric precipitation district and bag-type dusting district.The side of housing is provided with smoke inlet (7), and the opposite side of housing is provided with exhanst gas outlet (8).
2. particle according to claim 1 is combined with heavy metal and is removed device, it is characterized in that, sorbent injection district is provided with sorbent injection system (4), this system is made up of transfer pipeline (4-1) and injection line (4-2) two parts, adsorbent conveyance conduit is by stretching in device above housing, the some equidistant uniform vertical of adsorbent jet pipe are had to be communicated with on adsorbent conveyance conduit, the multiple spray gun of device (4-3) on adsorbent jet pipe, connect with flexible pipe between spray gun and jet pipe, spray gun is set in the both sides of jet pipe, it is vertical with flue gas stream direction that spray gun ejection adsorbent direction is set.
3. sorbent injection system according to claim 2, it is characterized in that, set spray gun is in jet pipe both sides, on adjacent two jet pipes, spray gun evenly staggers arrangement, during to ensure spray gun ejection adsorbent, both sides spray gun fully increases adsorbent coverage rate, and the adsorbent simultaneously avoiding offside spray gun to spray blocks spray gun mutually.
4. particle according to claim 1 is combined with heavy metal and is removed device, it is characterized in that, described mercury catalytic oxidant fixed bed (3), bed can be set and be at least one deck, arrange fixed bed as being several, the horizontal direction that multiple fixed bed should be kept to enter along flue gas is set up in parallel successively.
5. fixed bed according to claim 4, it is characterized in that, fixed bed comprises ventilative grid I and ventilative grid II, mercury catalytic oxidant is filled with between ventilative grid I and II, catalytic oxidant adopts the form of catalyst bag to be seated between ventilative grid, and the top of described fixed bed corresponding housing is provided with closed charging door, and the below of corresponding housing is provided with closed discharge port, described dress discharge port is provided with electrically operated valve, realizes automatically completing dress discharge process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207706.5U CN204543944U (en) | 2015-03-31 | 2015-03-31 | A kind ofly combine the device removed with heavy metal for boiler smoke particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207706.5U CN204543944U (en) | 2015-03-31 | 2015-03-31 | A kind ofly combine the device removed with heavy metal for boiler smoke particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204543944U true CN204543944U (en) | 2015-08-12 |
Family
ID=53819113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520207706.5U Expired - Fee Related CN204543944U (en) | 2015-03-31 | 2015-03-31 | A kind ofly combine the device removed with heavy metal for boiler smoke particle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204543944U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740983A (en) * | 2015-03-31 | 2015-07-01 | 广东电网有限责任公司电力科学研究院 | Method and device for performing combined removal on boiler flue gas particulates and heavy metals |
| CN106948858A (en) * | 2017-04-10 | 2017-07-14 | 山东科技大学 | Depositing dust plate and dust falling in coal mining blower fan |
| CN108671698A (en) * | 2018-05-13 | 2018-10-19 | 湖南钜晟环保科技工程有限公司 | A kind of exhaust gas adsorption box |
| CN110523250A (en) * | 2019-09-23 | 2019-12-03 | 华北电力大学（保定） | A kind of moving source exhaust gas aftertreatment system can effectively reduce content of beary metal |
-
2015
- 2015-03-31 CN CN201520207706.5U patent/CN204543944U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740983A (en) * | 2015-03-31 | 2015-07-01 | 广东电网有限责任公司电力科学研究院 | Method and device for performing combined removal on boiler flue gas particulates and heavy metals |
| CN106948858A (en) * | 2017-04-10 | 2017-07-14 | 山东科技大学 | Depositing dust plate and dust falling in coal mining blower fan |
| CN108671698A (en) * | 2018-05-13 | 2018-10-19 | 湖南钜晟环保科技工程有限公司 | A kind of exhaust gas adsorption box |
| CN110523250A (en) * | 2019-09-23 | 2019-12-03 | 华北电力大学（保定） | A kind of moving source exhaust gas aftertreatment system can effectively reduce content of beary metal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170809 Address after: 510630, No. fifth, No. 146-150, Whampoa Avenue, Tianhe District, Guangdong, Guangzhou Co-patentee after: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee after: GUANGDONG DIANKEYUAN ENERGY TECHNOLOGY Co.,Ltd. Address before: Guangzhou City, Guangdong province Yuexiu District 510080 Dongfeng East Road, No. 8 building water Kong Guangdong Co-patentee before: North China Electric Power University (Baoding) Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200710 Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee after: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. Address before: 510630, No. 146-150, No. fifth, Whampoa Avenue, Tianhe District, Guangdong, Guangzhou Co-patentee before: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee before: GUANGDONG DIANKEYUAN ENERGY TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |