CN204866200U - Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust - Google Patents
Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust Download PDFInfo
- Publication number
- CN204866200U CN204866200U CN201520526954.6U CN201520526954U CN204866200U CN 204866200 U CN204866200 U CN 204866200U CN 201520526954 U CN201520526954 U CN 201520526954U CN 204866200 U CN204866200 U CN 204866200U
- Authority
- CN
- China
- Prior art keywords
- metal cylinder
- dust
- dust removal
- removal system
- electric field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrostatic Separation (AREA)
Abstract
The utility model provides a novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust belongs to the gas cleaning field. This high temperature dust pelletizing system includes the he dian district and gathers dust the district that hedian is equipped with the metal cylinder in the district, is provided with dirty gas entry and dirty gas export on the metal cylinder respectively, the outer wall ground connection of metal cylinder is as the positive pole in he dian district, set up emitting electrode and adopt tungsten base combined material as negative pole, emitting electrode in the metal cylinder, emitting electrode links to each other with the high voltage power supply negative pole, the periphery of metal cylinder is equipped with the heat preservation device, it is equipped with the grained layer filter to gather dust to distinguish, and the entry of grained layer filter and the dirty gas export in he dian district link to each other. The utility model discloses a high temperature dust pelletizing system simple structure, convenient to use, dust removal effect is showing, has higher practical value.
Description
Technical field
The utility model relates to a kind of high-temperature dust removal system, is specifically related to a kind of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system, belongs to flue gases purification field.
Background technology
Integrated gasification combined cycle plants (IGCC) Poly-generation technology has important practical significance for efficient, the clean utilization of coal and modern petroleum industry cleaner production, and high-temperature synthesis gas dedusting is one of key issue of facing of current I GCC.Up to now, studied in the world high-temperature dust removal technology mainly comprises electrostatic precipitation, cyclone dust removal, ceramic filter dedusting, metal felt dust removal by filtration and granular bed filter dedusting etc.; These technology all have respective shortcomings and limitations, also there is the technical bottleneck that some are difficult to break through so far, still can not meet the commercialization requirement of the direct dedusting of IGCC system high temperature synthesis gas completely.According to the comprehensive analysis to different high-temperature dust removal mode, generally acknowledge that granular bed filter dedusting is the most rising at present in the world.
The greatest problem of granular bed filter dedusting is to the grade dust-collection efficiency of subparticle low (being in particular in the collection efficiency about 75% ~ 90% in 0.5 ~ 9 μm of particle size range), is still difficult to meet the equipment safety operations such as gas turbine and day by day harsh environmental requirement.Therefore, if application granular-bed filter is as IGCC system high temperature coal gas dust removal equipment, need the key issue solved to be how to improve its efficiency of dust collection to subparticle.Although overall filtration effect can be made to be improved by method such as the adjustment rate of filtration, thickness of bed layer, bed rate travel and bed media particle particle diameter etc., but concerning the tiny grit of 0.5 ~ 9 μm, the raising of separative efficiency is not obvious.
If adopt the method for electric field intensity, then can integrate the advantage of electrostatic precipitation and granular bed filter, both the former shortcoming to dust specific resistance sensitivity had been overcome, turn avoid the weakness that the latter is low to subparticle arresting efficiency, and realize the prerequisite of this technology and key be how to dust fast, pre electrified fully.
Correlation technique reported up to now all adopts traditional high voltage gas ionization discharge method to make dust charged, it is only suitable for working under low temperature environment in below 450 DEG C, because at high operating temperatures, the voltage range that its corona runs reduces, and corona phenomenon is difficult to maintain; Simultaneously due to its operating voltage high (up to 100kV), the problem of electric insulation is difficult to solve.
Summary of the invention
In order to overcome the defect existed in prior art, the utility model makes hot cathode with the Rare-Earth Tungsten composite functional material that work function is lower, make it heat with coal gas of high temperature institute heat content and launch thermoelectron, dust becomes charged particle after catching the anion in electronics or coal gas, high-temperature flue gas carries Charged and enters granular-bed filter, Charged is caught under the synergy of electrostatic force and mechanic stress (filtration), dust pelletizing system of the present utility model is utilized to carry out dedusting, Be very effective.
The utility model solves the technical scheme that its technical problem adopts:
A kind of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system, comprises charging area and dust collection section, is provided with metal cylinder in described charging area, and metal cylinder is respectively arranged with dusty gas entrance and dusty gas outlet; The outer wall ground connection of metal cylinder, as the anode of charging area; In metal cylinder, arrange emission electrode as negative electrode, emission electrode adopts tungsten-based composite material, and emission electrode is connected with high voltage source negative electrode; The outer of described metal cylinder is arranged with attemperator; Described dust collection section is provided with granular-bed filter, and the entrance of granular-bed filter exports with the dusty gas of described charging area and is connected.
Described metal cylinder is tubular structure, adopts exotic material.
Described tungsten-based composite material is made up of matrix tungsten and rare earth oxide.
Further, described rare earth oxide is CeO
2, La
2o
3, Y
2o
3in the combination of one or more several rare earth oxides.
Further, described emission electrode suspention is arranged on the axial location of metal cylinder.
Further, described dusty gas entrance connects high-temperature flue gas.
Further, described emission electrode is columned.
The utility model is to add rare earth oxide (CeO
2, La
2o
3, Y
2o
3) tungsten base functional composite material be hot cathode, the mode utilizing field-assisted thermal electron to launch makes the pre-charged dust in high-temperature flue gas, then enter granular-bed filter, efficiently trap the fine dust in high-temperature flue gas by static reinforced and synergy that is granular bed filter; The concrete beneficial effect of the utility model is as follows:
(1) dust pelletizing system of the present utility model utilizes the heat of high-temperature flue gas itself to make emitting head heat and launch electronics, compared with traditional high voltage corona discharge type dust charge power technology, not only efficiently utilizes fume waste heat, economize energy; And electric insulation problem is difficult to solve under overcoming the latter's hot conditions, the shortcomings such as poor work stability.
(2) dust pelletizing system of the present utility model is specially adapted to hot environment, and temperature is higher, and cathode primary electron emission density is larger, is more conducive to trapping fine particle.
(3) dust pelletizing system of the present utility model with the Rare-Earth Tungsten composite functional material of high-melting-point, low work function for negative electrode, in conjunction with the enhancement effect of extra electric field, significantly can improve the discharge performance of negative electrode, optimize the charged environment of fine dust, thus significantly improve the arresting efficiency of stratum granulosum to ultrafine dust especially submicron particles.
(4) in addition, the utility model system architecture is simple, easy to use, and dust removing effects is remarkable, has higher practical value.
Accompanying drawing explanation
Fig. 1 is the structure chart of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system of the present utility model;
Wherein, 1-charging area, 2-dust collection section, 3-dusty gas, 4-high voltage source negative electrode, 5-heat-insulation layer, 6-Rare-Earth Tungsten negative electrode, 7-anode, 8-granular-bed filter, 9-base, 10-clean gas, 11-metal cylinder, 12-dusty gas entrance, 13-dusty gas exports.
Detailed description of the invention
Further illustrate below in conjunction with accompanying drawing with to the utility model.
Please refer to shown in Fig. 1, novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system of the present utility model, its structure comprises charging area 1 and dust collection section 2, in charging area 1, for giving full play to the feature of cathode primary electron emission, charging area 1 adopts tubular structure, and the maximum operating temperature of charging area 1 can reach 1500 DEG C; Wherein, in charging area 1, arranging refractory metal cylindrical shell 11, (material as refractory metal is 2Cr
25ni
20stainless steel), refractory metal cylindrical shell 11 is respectively arranged with dusty gas entrance 12 and dusty gas outlet 13; The outer wall ground connection of refractory metal cylindrical shell 11, as the anode 7 of charging area 1; Columned emission electrode is set at the centric sus-pension of metal cylinder 11, to ensure that thermoelectron is launched to surrounding equably; Emission electrode is that the tungsten base functional composite material adding rare earth oxide is prepared from, i.e. Rare-Earth Tungsten negative electrode 6; The preparation process of tungsten base functional composite material is in matrix tungsten, add the rare earth oxide that mass percent is 0.1 ~ 3%, then is obtained by powder metallurgical technique; Wherein, rare earth oxide is CeO
2, La
2o
3, Y
2o
3in the combination of one or more several rare earth oxides.
For guaranteeing thermionic stable transmitting in larger temperature range, emission electrode (Rare-Earth Tungsten negative electrode 6) is connected with high voltage source negative electrode 4.In addition, heat-insulation layer is provided with in the outside of metal cylinder 11, to maintain the operating temperature of whole charging area.Arrange granular-bed filter 8 in dust collection section 2, the entrance of granular-bed filter 8 exports 13 with the dusty gas of charging area 1 and is connected.
The operation principle of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system is: high-temperature dusty gas 3 flows through charging area 1, Rare-Earth Tungsten negative electrode 6 is directly heated by high temperature gas flow and launches thermoelectron by the synergy of extra electric field, excite high-temperature flue gas to discharge simultaneously and produce anion, dust in dusty gas 3 becomes charged particle after catching electronics or anion, high-temperature flue gas carries Charged and enters granular-bed filter 8, Charged is caught under the synergy of electrostatic force and mechanic stress (filtration), obtain clean gas 10, finally complete the process of high-temperature dust removal.
Be further described below in conjunction with the dust removing effects of embodiment to novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system of the present utility model.
Embodiment
The foregoing is only the preferred embodiment of system described in the utility model, do not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (7)
1. a novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system, it is characterized in that, described high-temperature dust removal system comprises charging area and dust collection section, is provided with metal cylinder in described charging area, and metal cylinder is respectively arranged with dusty gas entrance and dusty gas outlet; The outer wall ground connection of metal cylinder, as the anode of charging area; In metal cylinder, arrange emission electrode as negative electrode, emission electrode adopts tungsten-based composite material, and emission electrode is connected with high voltage source negative electrode; The outer of described metal cylinder is arranged with attemperator; Described dust collection section is provided with granular-bed filter, and the entrance of granular-bed filter exports with the dusty gas of described charging area and is connected.
2. a kind of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as claimed in claim 1, it is characterized in that, described metal cylinder is tubular structure, adopts exotic material.
3. a kind of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as claimed in claim 1, it is characterized in that, described tungsten-based composite material is made up of matrix tungsten and rare earth oxide.
4. a kind of novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as claimed in claim 3, it is characterized in that, described rare earth oxide is CeO
2, La
2o
3, Y
2o
3in the combination of one or more several rare earth oxides.
5. the one novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as described in one of as any in claim 1-4, it is characterized in that, described emission electrode suspention is arranged on the axial location of metal cylinder.
6. the one novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as described in one of as any in claim 1-4, it is characterized in that, described dusty gas entrance connects high-temperature flue gas.
7. the one novel pre-charged dust electric field intensity stratum granulosum high-temperature dust removal system as described in one of as any in claim 1-4, it is characterized in that, described emission electrode is columned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526954.6U CN204866200U (en) | 2015-07-20 | 2015-07-20 | Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526954.6U CN204866200U (en) | 2015-07-20 | 2015-07-20 | Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204866200U true CN204866200U (en) | 2015-12-16 |
Family
ID=54810633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520526954.6U Expired - Fee Related CN204866200U (en) | 2015-07-20 | 2015-07-20 | Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204866200U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498967A (en) * | 2015-07-20 | 2016-04-20 | 南京师范大学 | Novel dust precharged type electrostatically-enhanced granular-bed high-temperature dust removal system |
| CN108499735A (en) * | 2017-02-27 | 2018-09-07 | 袁野 | Moisture condensation type electric precipitator |
-
2015
- 2015-07-20 CN CN201520526954.6U patent/CN204866200U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498967A (en) * | 2015-07-20 | 2016-04-20 | 南京师范大学 | Novel dust precharged type electrostatically-enhanced granular-bed high-temperature dust removal system |
| CN108499735A (en) * | 2017-02-27 | 2018-09-07 | 袁野 | Moisture condensation type electric precipitator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105498967A (en) | Novel dust precharged type electrostatically-enhanced granular-bed high-temperature dust removal system | |
| CN206305196U (en) | A kind of organic polluted soil thermal desorption is repaired and tail gas catalyzed controlling device | |
| CN103657316A (en) | Electrostatically-enhanced electric-bag compound dust remover | |
| CN102327724B (en) | Electric-bag composite dust collector | |
| CN103447153A (en) | Electronic dust remover | |
| CN204866200U (en) | Novel electric static reinforcing grained layer high temperature dust pelletizing system is carried on one's shoulder or back in advance to dust | |
| CN102078841A (en) | Single-zone plate type high-temperature electrostatic dust collector | |
| CN101322957B (en) | High-temperature flue gas thermal electron emission type particulate matter charge device | |
| CN202569885U (en) | Electrostatic actuation bag type dedusting system | |
| Xu et al. | Performances of a new type high-temperature tubular electrostatic precipitator with rare-earth tungsten cathode | |
| CN201399382Y (en) | Small cathode frame for electrostatic precipitator | |
| CN104043532A (en) | Dual-region tubular high-temperature electrostatic dedusting device | |
| CN106492571A (en) | Electric precipitation filter cylinder and its dust collection method | |
| CN208032819U (en) | Flue gas purification system | |
| CN207552362U (en) | Coal gas of converter thermal energy full-dry method purifying retracting device | |
| CN204911129U (en) | A section of thick bamboo is strained to electric precipitation | |
| CN108421637A (en) | Industrial waste gas fine particle coalescence removes and the total system of UTILIZATION OF VESIDUAL HEAT IN | |
| CN204380464U (en) | High temperature resistant Anti-dew air box type pulse electrostatic compound precipitator | |
| CN207872403U (en) | A kind of electrostatic precipitation case | |
| CN203565201U (en) | Automatic dust collector for perforated plate | |
| CN202643727U (en) | Electric bag combination type dry purification and recovery system for coal gas of converter | |
| CN207414001U (en) | A kind of corona shower handles organic pollution device | |
| CN206652603U (en) | Commercial large-scale more point electrode honeycomb circle E field electrostatic dust arresters | |
| CN204865353U (en) | High -efficient entrapment device of high temperature smoke and dust ultra -fine grain | |
| CN206404555U (en) | A kind of oil-containing organic waste gas treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151216 Termination date: 20190720 |