CN203116450U - Low-order coal drying upgrading equipment - Google Patents
Low-order coal drying upgrading equipment Download PDFInfo
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- CN203116450U CN203116450U CN 201320001013 CN201320001013U CN203116450U CN 203116450 U CN203116450 U CN 203116450U CN 201320001013 CN201320001013 CN 201320001013 CN 201320001013 U CN201320001013 U CN 201320001013U CN 203116450 U CN203116450 U CN 203116450U
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- drying
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Abstract
The utility model belongs to drying equipment, and particularly relates to low-order coal drying upgrading equipment. The low-order coal drying upgrading equipment is characterized by comprising a feed bin, a section preheat drying rotary kiln, a second section upgrading rotary kiln and a finished product discharging device which are all sequentially connected, wherein heating kilns used for self-heating are arranged on the outer side of the second section upgrading rotary kiln. The low-order coal drying upgrading equipment has the advantages that aiming at the characteristic that low-order coal contains much water, a process of heat value improvement is carried out on the coal, drying effects are good, a process is simple, dust in materials is reduced, coal spontaneous combustion is effectively prevented, external moisture and internal moisture of the coal are effectively reduced, and the coal heat value is remarkably improved. The low-order coal drying upgrading equipment is also suitable for drying treatment of various hydrous minerals.
Description
Technical field
The utility model belongs to drying plant, relates to a kind of low order coal oven dry upgrading device.
Background technology
Low order coal moisture higher (mainly be that inherent moisture is higher--in-mineral matter the crystallization water 25%), in burning and the gasification heat consumption greatly, lower, the coal utilization inefficiency of coal calorific value.The free moisture of coal can obtain certain reduction by air air dry and general oven dry heating, if misoperation may increase content of ashes in the coal when reducing free moisture, when free moisture is down to when very low, as store the improper spontaneous combustionof coal that causes, meanwhile low order coal inherent moisture content reduces than difficult.
Summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provide a kind of good drying effect, technology simple, reduce dust, prevent the low order coal oven dry upgrading device of spontaneous combustion.
The utility model is achieved by the following technical solution:
Low order coal oven dry upgrading device of the present utility model, its special character is: comprise successively the feeding warehouse that connects, one section preheating and drying rotary kiln, two sections upgrading rotary kilns and finished product discharger, the outside of two sections upgrading rotary kilns is provided with for the heating kiln that adds to self heating.
Add heating kiln and be provided with combustion-aid air pipe and coal supply tracheae, adding heating kiln, to connect one section preheating and drying rotary kiln by the high temperature waste hot pipe be its supplying high temperature waste hot gas, and adding heating kiln, also to connect two sections upgrading rotary kilns be its supplying high temperature waste hot gas.
Add the heating kiln outside and also be provided with used heat circulation kiln, add heating kiln and connect two sections upgrading rotary kilns again behind used heat circulation kiln, the entrance of used heat circulation kiln connects by the heat cycles pipe and adds heating kiln, and outlet connects two sections upgrading rotary kilns by the cycle gas manifold trunk.
Be provided with the discharger that shifts for material between one section preheating and drying rotary kiln and two sections upgrading rotary kilns.
Feeding warehouse is closed feeding warehouse, and it also is connected gravitational precipitator with the junction of one section preheating and drying rotary kiln.
The junction of two sections upgrading rotary kilns and finished product discharger also is connected the used heat air-introduced machine, and the outlet of used heat air-introduced machine connects gravitational precipitator and screen collector successively.
Operation principle: in one section preheating and drying rotary kiln, utilize the high temperature waste hot gas preheating and drying earlier, take away portion of water, carry out external heat oven dry and the oven dry of internal high temperature waste hot gas at two sections upgrading rotary kilns then, take away residual moisture.By the used heat air-introduced machine waste gas and dust are all taken away at last.Utilize deduster to collect dust, discharge clean waste gas.
The beneficial effects of the utility model are, at the moisture many characteristics of low order coal coal is carried out the technology that calorific value improves, good drying effect, technology is simple, reduce the dust in the material, effectively prevent spontaneous combustionof coal, can be with the calorific value of low order coal by 5000 ~ 5500 kilocalories, by this process equipment the coal free moisture is down to 0, inherent moisture is controlled in 0.1 ~ 8% according to user's requirement, the coal calorific value is brought up to 6500 ~ 7500 kilocalories, simultaneously can reduce potassium in the low order coal, the content of sodium material, to improving coal at blast furnace blowing, boiler combustion adds to be pined for ash fusion point and has played certain effect, to energy-saving and cost-reducing, improve the coal comprehensive utilization ratio, reducing the Coal Transport cost has remarkable effect.This equipment also is applicable to the drying processing of various enhydrites.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure, 1 feeding warehouse, 2 one sections preheating and drying rotary kilns, 3 two sections upgrading rotary kilns, 4 finished product dischargers, 5 add heating kiln, 6 combustion-aid air pipes, 7 coal supply tracheaes, 8 high temperature waste hot pipes, 9 used heat circulation kilns, 10 heat cycles pipes, 11 cycle gas manifold trunks, 12 dischargers, 13 gravitational precipitators, 14 used heat air-introduced machines, 15 screen collectors, 16 rotary kiln rolling rings, 17 supporting roller of rotary kiln bases, 18 materials and high temperature hot gas and compile mouth.
The specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Low order coal of the present utility model oven dry upgrading device, the outside that comprises the feeding warehouse 1 that connects successively, one section preheating and drying rotary kiln 2, two sections upgrading rotary kilns 3 and 4, two sections upgrading rotary kilns of finished product discharger are provided with for adding heating kiln 5 to self heating.
Add heating kiln 5 and be provided with combustion-aid air pipe 6 and coal supply tracheae 7, add heating kiln and connect one section preheating and drying rotary kiln 2 by high temperature waste hot pipe 8 and be its supplying high temperature waste hot gas, add heating kiln and also connect two sections upgrading rotary kilns 3 and be its supplying high temperature waste hot gas.High temperature waste hot gas is used for materials such as oven dry foam coal.
Add heating kiln 5 outsides and also be provided with used heat circulation kiln 9, add heating kiln and connect two sections upgrading rotary kilns again behind used heat circulation kiln, the entrance of used heat circulation kiln connects by heat cycles pipe 10 and adds heating kiln, and outlet connects two sections upgrading rotary kilns by cycle gas manifold trunk 11.Like this, make waste hot gas add two sections upgrading rotary kilns of heat more from the outside.
Be provided with the discharger 12 that shifts for material between one section preheating and drying rotary kiln and two sections upgrading rotary kilns.Concrete effect is one section preheating and drying rotary kiln 2 discharging, two sections upgrading rotary kiln 3 chargings.
Feeding warehouse is closed feeding warehouse, and it also is connected gravitational precipitator 13 with the junction of one section preheating and drying rotary kiln.Be used for tentatively removing the interior dust of material such as foam coal.
The junction of two sections upgrading rotary kilns and finished product discharger also is connected used heat air-introduced machine 14, and the outlet of used heat air-introduced machine connects gravitational precipitator 13 and screen collector 15 successively.Used heat air-introduced machine 14 is used for making better operation forward of waste hot gas, oven dry material.Gravitational precipitator 13 is used for removing the interior dust of material such as foam coal.Screen collector 15 is used for finally removing the dust in the material.
One section preheating and drying rotary kiln 2, two sections upgrading rotary kilns 3 are respectively equipped be used to several rotary kiln rolling rings 16 and the supporting roller of rotary kiln basis 17 that make its rotation.The junction of high temperature waste hot pipe 8 and one section preheating and drying rotary kiln 2 has material and high temperature hot gas to compile mouth 18.
The technology summary: low order coal is sent into closed feeding warehouse 1 with sealed conveying equipment, gravity continuous and quantitative by coal self is sent into one section preheating and drying rotary kiln 2, in this kiln, utilize the reverse exchange heat exchange of high temperature waste hot gas and coal, coal is carried out preheating and drying remove the coal free moisture.Enter two sections upgrading rotary kilns 3 by the heat exchange of the inside and outside heating of rotary kiln and cycle gas through discharger 12 afterwards, remove inherent moisture in the coal according to different heat transfer character and the required inherent moisture resolution temperature of coal, make it to reach and improve the coal calorific value.Borrow cycle gas to take away moisture in the system, reduce material kiln discharge temperature.All waste gases and coal dust are extracted out by two sections upgrading rotary kilns, 3 afterbody used heat air-introduced machines 14, enter gravitational precipitator 13 and remove fine dusts, enter the effect that the water curtain cleaner reaches purifying exhaust air, can collect condensed water simultaneously, reach environmental requirement.
This technology can realize temperature, pressure, output visual control, can realize the operating system automation.The gas that is used for heating can be fuel gas such as coke-stove gas, semicoke coal gas, gas generator coal gas.The drying that also is applicable to various enhydrites is handled.
Claims (6)
1. low order coal oven dry upgrading device is characterized in that: comprise the feeding warehouse that connects successively, one section preheating and drying rotary kiln, two sections upgrading rotary kilns and finished product discharger, the outside of two sections upgrading rotary kilns is provided with for the heating kiln that adds to self heating.
2. low order coal according to claim 1 is dried upgrading device, it is characterized in that: add heating kiln and be provided with combustion-aid air pipe and coal supply tracheae, adding heating kiln, to connect one section preheating and drying rotary kiln by the high temperature waste hot pipe be its supplying high temperature waste hot gas, and adding heating kiln, also to connect two sections upgrading rotary kilns be its supplying high temperature waste hot gas.
3. low order coal according to claim 2 is dried upgrading device, it is characterized in that: add the heating kiln outside and also be provided with used heat circulation kiln, add heating kiln and behind used heat circulation kiln, connect two sections upgrading rotary kilns again, the entrance of used heat circulation kiln connects by the heat cycles pipe and adds heating kiln, and outlet connects two sections upgrading rotary kilns by the cycle gas manifold trunk.
4. according to any described low order coal oven dry upgrading device among the claim 1-3, it is characterized in that: be provided with the discharger that shifts for material between one section preheating and drying rotary kiln and two sections upgrading rotary kilns.
5. according to any described low order coal oven dry upgrading device among the claim 1-3, it is characterized in that: feeding warehouse is closed feeding warehouse, and it also is connected gravitational precipitator with the junction of one section preheating and drying rotary kiln.
6. according to claim 2 or 3 described low order coals oven dry upgrading devices, it is characterized in that: the junction of two sections upgrading rotary kilns and finished product discharger also is connected the used heat air-introduced machine, and the outlet of used heat air-introduced machine connects gravitational precipitator and screen collector successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001013 CN203116450U (en) | 2013-01-04 | 2013-01-04 | Low-order coal drying upgrading equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001013 CN203116450U (en) | 2013-01-04 | 2013-01-04 | Low-order coal drying upgrading equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203116450U true CN203116450U (en) | 2013-08-07 |
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ID=48896786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320001013 Withdrawn - After Issue CN203116450U (en) | 2013-01-04 | 2013-01-04 | Low-order coal drying upgrading equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN203116450U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062999A (en) * | 2013-01-04 | 2013-04-24 | 山东汉菱电气有限公司 | Low-rank coal drying and upgrading unit |
| CN106047441A (en) * | 2016-07-13 | 2016-10-26 | 青岛松灵电力环保设备有限公司 | Brown coal drying and upgrading system |
| CN109282584A (en) * | 2018-07-26 | 2019-01-29 | 河北工程大学 | Low-rank coal dries upgrading device |
-
2013
- 2013-01-04 CN CN 201320001013 patent/CN203116450U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062999A (en) * | 2013-01-04 | 2013-04-24 | 山东汉菱电气有限公司 | Low-rank coal drying and upgrading unit |
| CN103062999B (en) * | 2013-01-04 | 2014-11-26 | 山东汉菱电气有限公司 | Low-rank coal drying and upgrading unit |
| CN106047441A (en) * | 2016-07-13 | 2016-10-26 | 青岛松灵电力环保设备有限公司 | Brown coal drying and upgrading system |
| CN109282584A (en) * | 2018-07-26 | 2019-01-29 | 河北工程大学 | Low-rank coal dries upgrading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130807 Effective date of abandoning: 20141126 |
|
| RGAV | Abandon patent right to avoid regrant |