CN204254653U - Dry desulfurization deliming system before thermal power plant's raw coal stove - Google Patents
Dry desulfurization deliming system before thermal power plant's raw coal stove Download PDFInfo
- Publication number
- CN204254653U CN204254653U CN201420493861.3U CN201420493861U CN204254653U CN 204254653 U CN204254653 U CN 204254653U CN 201420493861 U CN201420493861 U CN 201420493861U CN 204254653 U CN204254653 U CN 204254653U
- Authority
- CN
- China
- Prior art keywords
- coal
- raw coal
- thermal power
- power plant
- screening plant
- 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.)
- Active
Links
Abstract
Dry desulfurization deliming system before thermal power plant described in the utility model raw coal stove, the main screening plant first utilizing sieve aperture to be 50mm carries out classification to raw coal, oversize after screening carries out break process through breaker, product after fragmentation returns main screening plant, form closed cycle, more based on some areas rainfall, the screenings of raw coal screening need enter the first drying device and carry out drying process, drying device thermal source can be provided by thermal power plant's waste heat, this is conducive to the surface moisture reducing coal, improve the effect of dry separation, after drying, coal enters dry method cull eliminator and carries out sorting, the cleaned coal selected directly sends into coal bunker before Boiler Furnace, to ensure the use of generating set.This system is also provided with dust-removing recovery device, and the particulate coal dust spread in dry separation process around equipment can be removed by dust arrester and reclaim, this is not only conducive to environmental protection, also achieves the recovery of particulate coal dust.
Description
Technical field
The utility model belongs to dry coal preparation technical field, is specifically related to dry desulfurization deliming system before a kind of thermal power plant raw coal stove
.
Background technology
The generating set of thermal power plant, when coal fired power generation, can give off containing a large amount of SO
2the flue gas of gas, for reducing SO
2deng the pollution of gas to environment, " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-20 11) specifies, general regional SO
2concentration of emission must < 100mg/m
3, key area concentration of emission must < 50 mg/m
3, west area concentration of emission must < 200mg/m
3.In existing power plant boiler unit, when entering stove raw coal sulfur-bearing > 0.55%, boiler combustion generating produce flue gas after desulfurizer process, SO
2concentration of emission still > 50mg/m
3, the emission request of discontented sufficient key area; When entering stove raw coal sulfur-bearing > 1.1%, boiler combustion generating produce flue gas after desulfurizer process, SO
2concentration of emission still > 100mg/m
3, do not meet the emission request in usually district; When entering stove raw coal sulfur-bearing > 2.2%, boiler combustion generating produce flue gas after desulfurizer process, SO
2concentration of emission still > 200mg/m
3, do not meet the emission request in west area.Therefore, thermal power plant need take measures the concentration of emission reducing sulphur, meets emission request.
Coal separation is Appropriate application coal in clean coal technology, the most economical effective method of protection of the environment, belongs to the watershed management measure of coal contaminated environment; The requisite prerequisite of Coal dressing, conversion and clean utilization and key link.Coal separation can not only be optimized product structure, and improves ature of coal, improves utilization ratio, but also can decreasing pollution, saves transport power.Therefore, thermal power plant raw coal is adopted to the mode of stokehold sorting, significantly can reduce the sulphur content content of as-fired coal charcoal, to realizing the high-efficiency comprehensive utilization of coal resources, economize energy, minimizing environmental pollution are significant.Coal separation is divided into wet coal preparation and dry coal preparation, wherein dry coal preparation technology clear superiority such as pollution-free after there is, dedusting low without water, investment and operating cost, development potentiality is very large, have a extensive future, state-of-the-art efficient separation dry coal preparation technology is adopted to carry out sorting to raw coal, discharge spoil wherein, obtain high-quality coal resource, not only significantly can reduce Coal Loss, reduce coal-fired power plant consumption, improve fuel availability, cost-saving, and sulfur content of coal obviously reduces after sorting, and not easily spontaneous combustion when storing up.
But in prior art, do not find the technology and the process matched therewith thereof that are suitable for thermal power plant's stokehold raw coal dry separation.
Utility model content
What the utility model solved is that prior art lacks the problem being suitable for thermal power plant's stokehold raw coal dry separation technology, and then provides a kind of and effectively can improve clean coal yield, dry desulfurization deliming system free from environmental pollution.
The utility model provides dry desulfurization deliming system before a kind of thermal power plant raw coal stove, comprising:
Main screening plant, the screen-aperture of described main screening plant is 50mm;
Breaker, exports to be connected with the oversize of described main screening plant and arranges, and the outlet of described breaker is connected with the charging aperture of described main screening plant and arranges;
Dry method cull eliminator, exports to be connected with the screenings of described main screening plant and arranges, and is suitable for the screenings of described main screening plant to divide to elect cleaned coal, middle coal and spoil as;
Dust-removing recovery device, comprises and is communicated with described dry method cull eliminator top the sack cleaner arranged, and be communicated with described sack cleaner the air-introduced machine arranged.
Also be provided with the first drying device, described first drying device is arranged between the screenings outlet of described main screening plant and described dry method cull eliminator.
Before described main screening plant, be also provided with pre-screen device, the screen-aperture of described pre-screen device is 6mm, and the outlet of the oversize of described pre-screen device is communicated with the charging aperture of described main screening plant and arranges; The outlet of described breaker is communicated with the charging aperture of described pre-screen device and arranges.
Also be provided with the second drying device, described second drying device exports to be connected with the screenings of described pre-screen device and arranges.
Described dry method cull eliminator is the efficient seperators of ZM mineral.
The middle coal export of described dry method cull eliminator is communicated with the charging aperture of described dry method cull eliminator and arranges, and is suitable for described middle coal to be back to described dry method cull eliminator.
Described first drying device and described second drying device are vibrating mixed flow bed dryer.
Described main screening plant and described pre-screen device are vibratory sieve.
Described breaker is raw coal disintegrating machine.
Dry method cull eliminator in the utility model is suitable for raw material to divide elects cleaned coal, middle coal and spoil as, and wherein cleaned coal refers to the coal that in raw coal, ash content is relatively low; Middle coal refers to the mixture of gangue and the cleaned coal separated from raw coal.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) desulfurization deliming system described in the utility model, the main screening plant first utilizing sieve aperture to be 50mm carries out classification to raw coal, oversize after screening carries out break process through breaker, product after fragmentation returns and carries out main screening plant, form closed cycle, the screenings of screening then enters dry method cull eliminator and carries out sorting, and the cleaned coal selected directly sends into coal bunker before Boiler Furnace, to ensure the use of generating set.Desulfurization deliming system described in the utility model is also provided with dust-removing recovery device, and the particulate coal dust spread in dry separation process around equipment can be removed by dust arrester and reclaim, this is not only conducive to environmental protection, also achieves the recovery of particulate coal dust.Because the index such as ash content, sulphur content of the particulate coal dust reclaimed is close with cleaned coal, therefore select to be mixed in head coal product, in order to improve clean coal yield.
(2) desulfurization deliming system described in the utility model, is also provided with the first drying device, and described first drying device is arranged between the screenings outlet of described main screening plant and described dry method cull eliminator.More based on some areas rainfall, the screenings of raw coal screening need enter the first drying device and carry out drying process, and drying device thermal source can be provided by thermal power plant's waste heat, and this is conducive to the surface moisture reducing coal, improves the effect of dry separation.
(3) desulfurization deliming system described in the utility model, by being provided with pre-screen device before described main screening plant, and the screen-aperture arranging described pre-screen device is 6mm, the simultaneously oversize outlet of described pre-screen device is communicated with the charging aperture of described main screening plant and arranges; The outlet of described breaker is communicated with the charging aperture of described pre-screen device and arranges.By first being sifted out by the coal dust being less than or equal to 6mm in raw coal, making main screening plant sieve the block screenings obtaining 6-50mm, when described first drying device is dry, because shape matching is even, optimizing drying program and drying time; Meanwhile, through separator sorting, the productive rate of Bed for Fine Coal reduces, and can improve the sharpness of separation of separator.
(4) desulfurization deliming system described in the utility model, by arranging the second drying device, the screenings of dry described pre-screen device, the particle diameter obtaining low water content is less than or equal to the coal dust of 6mm, can select to be incorporated in fine power coal, also can select other purposes, achieve a coal multiplex.
(5) desulfurization deliming system described in the utility model, the middle coal export also arranging described dry method cull eliminator is communicated with the charging aperture of described dry method cull eliminator and arranges, and is suitable for described middle coal to be back to described dry method cull eliminator.Thus the middle coal loop that formation one is closed, effective utilization ratio of middle coal is improved.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the system diagram of desulfurization deliming system described in the utility model;
Fig. 2 is the system diagram being provided with the desulfurization deliming system of pre-screen device described in the utility model;
In figure, Reference numeral is expressed as: 1-pre-screen device; The main screening plant of 2-; 3-breaker; 4-second drying device; 5-first drying device; 6-dry method cull eliminator; 7-power plant boiler stokehold coal bunker; 8-sack cleaner.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
embodiment 1
As shown in Figure 1, dry desulfurization deliming system before a kind of thermal power plant of the present utility model raw coal stove, comprise: main screening plant 2, described main screening plant 2 is suitable for sieving raw coal, it can be arbitrary raw coal screening plant in prior art, in the present embodiment, described main screening plant 2 for screen-aperture be the vibratory sieve of 50mm, breaker 3, export to be connected with the oversize of described main screening plant 2 and arrange, the outlet of described breaker 3 is connected with the charging aperture of described main screening plant 2 and arranges, described breaker 3 is suitable for the raw coal raw coal of bulk being broken for small particle diameter, it can be arbitrary disintegrating machine in prior art, in the present embodiment, described breaker 3 is raw coal disintegrating machine, dry method cull eliminator 6, export to be connected with the screenings of described main screening plant 2 and arrange, be suitable for the screenings of dried main screening plant 2 to divide to elect cleaned coal as, middle coal and spoil, the selection of described dry method cull eliminator 6 is not unique, in the present embodiment, described dry separation and 6 is the efficient seperators of ZM mineral, its grading principle is: raw coal is in the rotary motion of separation bed enterprising row order ladder type, repeated isolation is carried out between stepped region, different according to the composition of raw coal between each stepped region, form the spontaneous separating medium layer of fluidization with density variation, because the thickness gauge boiling degree of fluidization separating medium layer need not, the bury degree of depth of separated raw coal between each stepped region in dielectric layer be there are differences, thus realize the separation of different densities raw coal between each stepped region, dust-removing recovery device, comprises the sack cleaner 8 that to be communicated with described dry method cull eliminator 6 top and to arrange and is communicated with described sack cleaner 8 the air-introduced machine (not shown) arranged.The particulate coal dust spread in dry separation process around equipment can be removed by dust arrester and reclaim by dust-removing recovery device described in the present embodiment, and this is not only conducive to environmental protection, also achieves the recovery of particulate coal dust.Because the index such as ash content, sulphur content of the micro powder reclaimed is close with cleaned coal, therefore select to be mixed in head coal product, in order to improve clean coal yield.As preferred embodiment, the first drying device 5 is provided with in the present embodiment, described first drying device 5 adopts vibrating mixed flow bed dryer, more based on some areas rainfall, the screenings of raw coal screening need enter the first drying device and carry out drying process, drying device thermal source can be provided by thermal power plant's waste heat, and this is conducive to the surface moisture reducing coal, improves the effect of dry separation.As selectable embodiment, described first drying device also can not be set.
Before the described thermal power plant raw coal stove of the present embodiment, the use procedure of dry desulfurization deliming system is as follows:
The raw coal that thermal power plant purchases is sent into main screening plant 2 sieve, obtain particle diameter and be greater than the coal charge that the coal charge of 50mm and particle diameter be less than or equal to 50mm, the coal charge that particle diameter is greater than 50mm is sent in breaker 3 broken, and the coal charge after fragmentation is sent into main screening plant 2 and sieved, and forms closed cycle; The coal charge that particle diameter is less than or equal to 50mm enters the first drying device 5 and carries out drying, dried coal charge enters dry method cull eliminator 6 to carry out sorting and obtains cleaned coal, middle coal and spoil, the particulate coal dust of described dry method cull eliminator 6 in assorting room carries out dedusting and recovery by sack cleaner 8, and described cleaned coal sends into power plant boiler stokehold coal bunker 7.
embodiment 2
The present embodiment is the distortion on embodiment 1 basis, as shown in Figure 2, the difference of itself and embodiment one is: before described main screening plant 2, be also provided with pre-screen device 1, the selection of described pre-screen device 1 is not unique, in the present embodiment, described pre-screen device 1 for screen-aperture be the vibratory sieve of 6mm, the outlet of the oversize of described pre-screen device 1 is communicated with the charging aperture of described main screening plant 2 and arranges; The outlet of described breaker 3 is communicated with the charging aperture of described pre-screen device 1 and arranges, and forms closed cycle.
Further, also be provided with the second drying device 4, described second drying device 4 exports to be connected with the screenings of described pre-screen device 1 and arranges, described second drying device 4 for drying through described pre-screen device 1 screenings, its setting is not unique, in the present embodiment, described second drying device 4 adopts vibrating mixed flow bed dryer.
In addition, the middle coal export of dry method cull eliminator 6 described in the present embodiment is communicated with the charging aperture of described dry method cull eliminator 6 and arranges, and is suitable for described middle coal to be back to described dry method cull eliminator 6.
Before described thermal power plant of the present utility model raw coal stove, the use procedure of dry desulfurization deliming system and the difference of embodiment 1 are: first sent in the first screening plant 1 by the raw coal that thermal power plant purchases and sieve, obtain particle diameter and be greater than the coal charge that the coal charge of 6mm and particle diameter be less than or equal to 6mm, the coal charge that particle diameter is less than or equal to 6mm is sent into the second drying device 4 and is carried out drying, dried coal charge can be selected to be incorporated in cleaned coal, also can select his use, achieve a coal multiplex; The coal charge that particle diameter is greater than 50mm sends into main screening plant 2.And the present embodiment to be communicated with the charging aperture of described dry method cull eliminator to arrange by arranging in described dry method cull eliminator coal export, thus form a closed middle coal loop, effective utilization ratio of middle coal is improved.
In sum, the utility model carries out dry method to the raw coal that thermal power plant enters stokehold and takes off cash, reduce the spoil content in cleaned coal, make the sulfur content in raw coal, content of ashes reduces greatly, the clean and effective achieving coal resources utilizes, reduce the investment of enterprise's desulfurization deliming, there is obvious economy and environmental benefit; Meanwhile, the utility model can also sorting other containing ash, coal resources that sulfur content is high, as pebble coal etc.
Obviously, above-described embodiment is only for clearly example being described, the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (9)
1. a dry desulfurization deliming system before thermal power plant's raw coal stove, is characterized in that, comprising:
Main screening plant (2), the screen-aperture of described main screening plant (2) is 50mm;
Breaker (3), exports to be connected with the oversize of described main screening plant (2) and arranges, and the outlet of described breaker (3) is connected with the charging aperture of described main screening plant (2) and arranges;
Dry method cull eliminator (6), exports to be connected with the screenings of described main screening plant (2) and arranges, and is suitable for the screenings of described main screening plant (2) to divide to elect cleaned coal, middle coal and spoil as;
Dust-removing recovery device, comprises the sack cleaner (8) being communicated with described dry method cull eliminator (6) top and arranging, and is communicated with described sack cleaner (8) air-introduced machine arranged.
2. dry desulfurization deliming system before thermal power plant according to claim 1 raw coal stove, it is characterized in that, also be provided with the first drying device (5), described first drying device (5) is arranged between the screenings outlet of described main screening plant (2) and described dry method cull eliminator (6).
3. dry desulfurization deliming system before thermal power plant according to claim 1 raw coal stove, it is characterized in that, also be provided with pre-screen device (1) described main screening plant (2) is front, the screen-aperture of described pre-screen device (1) is 6mm, and the outlet of the oversize of described pre-screen device (1) is communicated with the charging aperture of described main screening plant (2) and arranges; The outlet of described breaker (3) is communicated with the charging aperture of described pre-screen device (1) and arranges.
4. dry desulfurization deliming system before thermal power plant according to claim 3 raw coal stove, is characterized in that, is also provided with the second drying device (4), and described second drying device (4) exports to be connected with the screenings of described pre-screen device (1) and arranges.
5. dry desulfurization deliming system before thermal power plant according to claim 4 raw coal stove, is characterized in that, described dry method cull eliminator (6) is the efficient seperator of ZM mineral.
6. dry desulfurization deliming system before thermal power plant according to claim 5 raw coal stove, it is characterized in that, the middle coal export of described dry method cull eliminator (6) is communicated with the charging aperture of described dry method cull eliminator (6) and arranges, and is suitable for described middle coal to be back to described dry method cull eliminator (6).
7. dry desulfurization deliming system before thermal power plant according to claim 4 raw coal stove, is characterized in that, described second drying device (4) is vibrating mixed flow bed dryer.
8. dry desulfurization deliming system before thermal power plant according to claim 7 raw coal stove, is characterized in that, described main screening plant (2) and described pre-screen device (1) are vibratory sieve.
9. dry desulfurization deliming system before thermal power plant according to claim 7 raw coal stove, is characterized in that, described breaker (3) is raw coal disintegrating machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493861.3U CN204254653U (en) | 2014-08-29 | 2014-08-29 | Dry desulfurization deliming system before thermal power plant's raw coal stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493861.3U CN204254653U (en) | 2014-08-29 | 2014-08-29 | Dry desulfurization deliming system before thermal power plant's raw coal stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204254653U true CN204254653U (en) | 2015-04-08 |
Family
ID=52958954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420493861.3U Active CN204254653U (en) | 2014-08-29 | 2014-08-29 | Dry desulfurization deliming system before thermal power plant's raw coal stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204254653U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013596A (en) * | 2015-07-14 | 2015-11-04 | 中国矿业大学 | Sorting device and sorting process for mineral substance hard to mill in circulating load of coal mill |
| CN106179676A (en) * | 2016-07-18 | 2016-12-07 | 淮南矿业(集团)有限责任公司 | A kind of dry coal preparation and processing method |
| CN107233988A (en) * | 2017-07-07 | 2017-10-10 | 兰州金川新材料科技股份有限公司 | Spray pyrolysis prepares the after-treatment system and processing method of cobaltosic oxide powder |
| CN109967202A (en) * | 2017-12-28 | 2019-07-05 | 兖矿科技有限公司 | Coal dry classification upgrading integral system and its processing method |
-
2014
- 2014-08-29 CN CN201420493861.3U patent/CN204254653U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013596A (en) * | 2015-07-14 | 2015-11-04 | 中国矿业大学 | Sorting device and sorting process for mineral substance hard to mill in circulating load of coal mill |
| CN105013596B (en) * | 2015-07-14 | 2018-05-25 | 中国矿业大学 | Difficult ore grinding sorting substances device and sorting process in coal pulverizer circulating load |
| CN106179676A (en) * | 2016-07-18 | 2016-12-07 | 淮南矿业(集团)有限责任公司 | A kind of dry coal preparation and processing method |
| CN107233988A (en) * | 2017-07-07 | 2017-10-10 | 兰州金川新材料科技股份有限公司 | Spray pyrolysis prepares the after-treatment system and processing method of cobaltosic oxide powder |
| CN109967202A (en) * | 2017-12-28 | 2019-07-05 | 兖矿科技有限公司 | Coal dry classification upgrading integral system and its processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204254653U (en) | Dry desulfurization deliming system before thermal power plant's raw coal stove | |
| RU2698754C1 (en) | Modular method of improving quality and system for improving quality of oil shale in high-density coal beds | |
| CN206549715U (en) | A kind of mining machinery stone crusher with screening function | |
| CN202008279U (en) | Material drying tower, material drying system and coking coal humidifying system | |
| CN102211087A (en) | Air and heavy medium dry coal preparation process | |
| CN202725512U (en) | Full-grain high-efficiency dry coal preparation system for power coal separation | |
| CN105623773A (en) | Biomass fuel and processing method thereof | |
| CN110548749A (en) | Novel method for grading and quality-grading utilization of coal gasification ash | |
| CN105038891A (en) | Low-sulfur and environment-friendly coal and processing method thereof | |
| CN101974344B (en) | Drying process for humidifying coals by using coke oven flue gas and device | |
| CN202398404U (en) | Environment-friendly production system for processing carbon dust of printer | |
| CN104673343A (en) | Machine separation and wind separation combined classified crushing and humidity regulation process for in-furnace coking coal | |
| CN104941905B (en) | A kind of low-order coal vibration separation drying and upgrading experimental system and method | |
| CN102796545B (en) | Method and device for humidifying coke by using oven coking airflow and packed bed | |
| CN105537120B (en) | The system and method for handling low-order coal | |
| CN201560180U (en) | Dry separation and drying combination device | |
| CN203229504U (en) | High-moisture lignite coal grinding and drying device | |
| CN105537121B (en) | The system and method for handling low-order coal | |
| CN205496053U (en) | System for handle low order coal | |
| CN107746719A (en) | The new technology that a kind of low-order coal sub-prime utilizes | |
| CN106833785A (en) | A kind of deliming of low-order coal, dry combined technique and system | |
| CN105057102B (en) | Comparison test platform of dust removal efficiency of polar plate | |
| CA3153286A1 (en) | Method and system for ash reclamation | |
| CN101781594B (en) | Method and device for converting solid waste into fuel or energy | |
| CN207600146U (en) | A kind of wet-discharged coal ash suspended state cycle drying and separation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |