CN202087526U - Lower-order coal pulse air flow separation and drying integrated device - Google Patents
Lower-order coal pulse air flow separation and drying integrated device Download PDFInfo
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- CN202087526U CN202087526U CN2011201100920U CN201120110092U CN202087526U CN 202087526 U CN202087526 U CN 202087526U CN 2011201100920 U CN2011201100920 U CN 2011201100920U CN 201120110092 U CN201120110092 U CN 201120110092U CN 202087526 U CN202087526 U CN 202087526U
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Abstract
The utility model relates to a low-order coal updating processing and utilization device, in particular to a lower-order coal pulse air flow separation and drying integrated device with two functions: the sorting function and the drying function. A body of the lower-order coal pulse air flow separation and drying integrated device mainly consists of an acceleration sorting pipe, a constant-speed drying pipe, a high-temperature smoke gas inlet pipe and a low-temperature smoke gas and updating clean coal output pipe, wherein both ends of the acceleration sorting pipe are in a cone-shaped structure, one end of the acceleration sorting pipe is connected with the acceleration sorting pipe, the other end of the acceleration sorting pipe is connected with the high-temperature smoke gas inlet pipe and an updating refuse coal output pipe, the constant-speed drying pipe is connected with the low-temperature smoke gas and updating clean coal output pipe, and a spiral feeding machine is positioned at the upper end of the acceleration sorting pipe and is communicated with the acceleration sorting pipe. Because the pipe diameters of the acceleration sorting pipe and the constant-speed drying pipe are different, the change of the air flow speed is caused for forming pulse air flows, the coal particle turbulence change is enhanced, and the two functions of sorting and drying are realized. The device is based on the low-order coal self characteristics, the sorting process preferentially uses a dry method for selecting coal, water sources are saved, in addition, coal mud is not generated, the structure is simple, and wide market prospects are realized.
Description
Technical field
The utility model relates to a kind of low-order coal upgrading processing and utilization device, particularly relates to a kind of drying integrated device of low-order coal air pulse sorting with sorting, dry two kinds of functions.
Background technology
Low-order coal is meant the coal that degree of metamorphism is lower, mainly comprises brown coal and ub-bituminous coal, and global low order coal resources surpass 4,650 hundred million tons, account for 47% of world's coal total resources.China has abundant low order coal resource reserve and is about 2,000 hundred million tons, accounts for about 30% of coal gross reserves.Wherein, Chinese explored brown coal recoverable amount reaches 1,303 hundred million tons, account for national coal reserves 13% a little less than, mainly be distributed in the North, Northeast China area.
Because low-order coal moisture height, calorific value are low, easy-weathering and spontaneous combustion, be difficult to washing and storage, cause the cost of transportation of unit energy higher, long distance is carried less economical, make the exploitation and the utilization of low-order coal be very limited, generally be used as a kind of inferior fuel, near the low-order coal place of production with its combustion power generation.The thermal efficiency that the high-moisture low-order coal is directly burnt is lower, and economy is limited, and the discharge capacity of greenhouse gases is also very big.Under current world energy sources situation, the efficient utilization of low-order coal is subjected to the attention of international energy circle again.Therefore reduce moisture, improve energy density and just become one of key issue of low-order coal processing and utilization.
Pneumatic conveying drying is a kind of continous way high-performance solid fluidized drying method.It is sent in the thermal current being mud shape, powder shape or block fine coal, also flows with it, thereby obtains being dispersed into granular dry products.At present, pneumatic conveyer dryer has obtained using widely in industry such as chemical industry, medicine, dyestuff and plastics.But be applied to coal separation and yet there are no report.
Summary of the invention
Goal of the invention of the present utility model is the defective at prior art, provide that a kind of dry tenacity is big, drying time is short, the thermal efficiency is high, treating capacity is big, equipment is simple, have the drying integrated device of low-order coal air pulse sorting of sorting, dry two kinds of functions.
Realize the foregoing invention purpose by the following technical solutions: the drying integrated device of a kind of low-order coal air pulse sorting, comprise the high sealing rotary valve, screw(-type) feeder, described device is mainly by quickening the sorting pipe, constant rate of drying pipe, high-temperature flue gas input pipe and low-temperature flue gas and upgrading cleaned coal efferent duct are formed, the two ends of described acceleration sorting pipe are conical structure, one end is connected with constant rate of drying pipe, the other end and high-temperature flue gas input pipe, cash coal efferent duct connects in the upgrading, constant rate of drying pipe is connected with upgrading cleaned coal efferent duct with low-temperature flue gas, described screw(-type) feeder is positioned at the upper end of quickening the sorting pipe, is communicated with acceleration sorting pipe.
Adopt technique scheme, this device makes low-order coal become upgraded coal high-energy-density, that chemical property is stable, remarkable in economical benefits based on the characteristics of low-order coal self.Because it is different with the caliber of constant rate of drying pipe to quicken the sorting pipe, cause the variation of air velocity and form air pulse, the turbulent fluctuation that the formation of air pulse can strengthen coal particle changes, and sorting, dry effect are further strengthened.Apparatus function is powerful, has sorting, dry two kinds of functions.Thermal efficiency height, the high-temperature flue gas maximum operating temperature can reach more than 900 ℃.Because the variation of different phase caliber reduces the operating pressure loss greatly.Sorting process preferentially uses dry coal preparation, not only has to save water resource, do not produce advantage such as coal slime, and also simple in structure, be convenient to assembling and have vast market prospect.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure, high sealing rotary valve 1, cash coal efferent duct 2 in the upgrading, high-temperature flue gas input pipe 3 quickens sorting pipe 4, screw(-type) feeder 5, constant rate of drying pipe 6, low-temperature flue gas and upgrading cleaned coal efferent duct 7.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Present embodiment is the drying integrated device of a kind of low-order coal air pulse sorting, and this device is formed by quickening sorting pipe 4, constant rate of drying pipe 6, high-temperature flue gas input pipe 3, high sealing rotary valve 1, screw(-type) feeder 5, low-temperature flue gas and upgrading cleaned coal efferent duct 7.That quickens sorting pipe 4 mainly act as sorting, drying, constant rate of drying pipe 6 mainly act as drying.Its structure is seen Fig. 1, by the body that quickens sorting pipe 4, constant rate of drying pipe 6, high-temperature flue gas input pipe 3 and low-temperature flue gas and upgrading cleaned coal efferent duct 7 component devices.The two ends of quickening sorting pipe 4 are conical structure, upper and lower conical section is the reducing section that quickens sorting pipe 4, the end of wherein going up circular cone is connected with constant rate of drying pipe 6 with pipe clamp, and 2 connections of cash coal efferent duct merge into a single whole and are connected with pipe clamp with the end of following circular cone in high-temperature flue gas input pipe 3 usefulness elbows and the upgrading.On the cash coal efferent duct 2 high sealing rotary valve 1 is installed in the upgrading.Constant rate of drying pipe 6 is connected with upgrading cleaned coal efferent duct 7 usefulness pipe clamps with low-temperature flue gas.Screw(-type) feeder 5 is positioned at the last conical section of quickening sorting pipe 4, is communicated with acceleration sorting pipe 4.
The caliber that quickens sorting pipe 4 is 3～5 times of constant rate of drying pipe 6 calibers, and its reducing zone length is bigger, and its reducing angle is 45 degree～75 degree.The length of constant rate of drying pipe 6 is 1～2 times of acceleration sorting length of tube.Quicken sorting pipe 4 heat outputs and account for 50%～70% of total heat transfer, constant rate of drying pipe 6 heat outputs account for 30%～50% of total heat transfer.
Arrow direction among Fig. 1 is input, the outbound course of material.
The course of work of the present utility model:
See Fig. 1, high-temperature flue gas enters high-temperature flue gas input pipe 3 from the bottom of device, is crushed to certain particle size (maximum particle diameter 3mm, average grain diameter 2mm) low-order coal from quickening sorting pipe 4 upper ends and fed by screw(-type) feeder 5 and mixing mutually with high-temperature flue gas.At this moment, the low-order coal particle will be received the active force of high velocity air and produce acceleration, when the sinking speed of coal particle during less than air velocity, this part coal particle (cleaned coal) will be taken away by air-flow, when the sinking speed of coal particle during greater than air velocity, middle coal, the spoil that this part coal particle promptly sub-elects drops out acceleration sorting pipe 4 and is expelled to the delivery outlet of cash coal efferent duct 2 in the upgrading by high sealing rotary valve 1, realizes the pneumatic separation of coal particle.
Simultaneously, coal particle carries out violent mixing with high-temperature flue gas in quickening sorting pipe 4, strong heat and mass effect takes place, and the moisture in the coal particle is able to flash evapn under huge thermograde, realizes the dehydration of coal particle.Quickening sorting pipe 4, the little cleaned coal particle of density is by the basic identical constant rate of drying pipe 6 that enters with air velocity of its speed of acceleration of air-flow, in constant rate of drying pipe 6, can finish the migration dry run of moisture in the coal particle space, make the further reduction of moisture of coal particle and reach final drying effect, the cleaned coal of upgrading is exported to the delivery outlet output of low-temperature flue gas and upgrading cleaned coal efferent duct 7 by constant rate of drying pipe 6.
Claims (3)
1. the drying integrated device of low-order coal air pulse sorting, comprise the high sealing rotary valve, screw(-type) feeder, it is characterized in that: described device is mainly by quickening the sorting pipe, constant rate of drying pipe, high-temperature flue gas input pipe and low-temperature flue gas and upgrading cleaned coal efferent duct are formed, the two ends of described acceleration sorting pipe are conical structure, one end is connected with constant rate of drying pipe, the other end and high-temperature flue gas input pipe, cash coal efferent duct connects in the upgrading, constant rate of drying pipe is connected with upgrading cleaned coal efferent duct with low-temperature flue gas, described screw(-type) feeder is positioned at the upper end of quickening the sorting pipe, is communicated with acceleration sorting pipe.
2. the drying integrated device of low-order coal air pulse according to claim 1 sorting, it is characterized in that, the caliber of described acceleration sorting pipe is 3～5 times of constant rate of drying pipe caliber, and the reducing angle is 45 degree～75 degree, and the length of constant rate of drying pipe is 1～2 times of acceleration sorting length of tube.
3. the drying integrated device of low-order coal air pulse according to claim 1 sorting is characterized in that, on the cash coal efferent duct high sealing rotary valve is installed in the described upgrading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100920U CN202087526U (en) | 2011-04-15 | 2011-04-15 | Lower-order coal pulse air flow separation and drying integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100920U CN202087526U (en) | 2011-04-15 | 2011-04-15 | Lower-order coal pulse air flow separation and drying integrated device |
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| Publication Number | Publication Date |
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| CN202087526U true CN202087526U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201100920U Expired - Fee Related CN202087526U (en) | 2011-04-15 | 2011-04-15 | Lower-order coal pulse air flow separation and drying integrated device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773544A (en) * | 2014-01-20 | 2014-05-07 | 中国矿业大学 | Pulse fluidization-based integrated de-ashing and dehydrating method and equipment of brown coal |
| CN104941905A (en) * | 2015-06-30 | 2015-09-30 | 中国矿业大学 | Experimental system and method for vibration grading, drying and quality improving of low-rank coal |
| CN108153948A (en) * | 2017-12-14 | 2018-06-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of specific length determining method of brown coal drying pipe |
| CN112474300A (en) * | 2020-12-08 | 2021-03-12 | 国家能源集团宁夏煤业有限责任公司 | Dry coal sorting method |
| CN114746191A (en) * | 2019-10-03 | 2022-07-12 | 凡留艾什技术股份有限公司 | Device for sorting powder particles |
-
2011
- 2011-04-15 CN CN2011201100920U patent/CN202087526U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773544A (en) * | 2014-01-20 | 2014-05-07 | 中国矿业大学 | Pulse fluidization-based integrated de-ashing and dehydrating method and equipment of brown coal |
| CN103773544B (en) * | 2014-01-20 | 2015-07-15 | 中国矿业大学 | Pulse fluidization-based integrated de-ashing and dehydrating method and equipment of brown coal |
| CN104941905A (en) * | 2015-06-30 | 2015-09-30 | 中国矿业大学 | Experimental system and method for vibration grading, drying and quality improving of low-rank coal |
| CN104941905B (en) * | 2015-06-30 | 2017-06-16 | 中国矿业大学 | A kind of low-order coal vibration separation drying and upgrading experimental system and method |
| CN108153948A (en) * | 2017-12-14 | 2018-06-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of specific length determining method of brown coal drying pipe |
| CN108153948B (en) * | 2017-12-14 | 2021-07-13 | 中国电力工程顾问集团西北电力设计院有限公司 | Method for determining length of lignite drying pipe |
| CN114746191A (en) * | 2019-10-03 | 2022-07-12 | 凡留艾什技术股份有限公司 | Device for sorting powder particles |
| CN112474300A (en) * | 2020-12-08 | 2021-03-12 | 国家能源集团宁夏煤业有限责任公司 | Dry coal sorting method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063012 Hebei province Tangshan City Xinhua West Road No. 21 Patentee after: TANGSHAN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY & ENGINEERING GROUP Address before: 063012 Hebei province Tangshan City Xinhua West Road No. 21 Patentee before: Tangshan Branch of China Coal Research Institute |
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| 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: 20111228 Termination date: 20170415 |