CN201935525U - Two-phase rotary flow lignite drier - Google Patents
Two-phase rotary flow lignite drier Download PDFInfo
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- CN201935525U CN201935525U CN2011200066814U CN201120006681U CN201935525U CN 201935525 U CN201935525 U CN 201935525U CN 2011200066814 U CN2011200066814 U CN 2011200066814U CN 201120006681 U CN201120006681 U CN 201120006681U CN 201935525 U CN201935525 U CN 201935525U
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- main body
- rotary flow
- fluidization
- lignite
- drying chamber
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Abstract
This utility model discloses a two-phase rotary flow lignite drier, belonging to the technical field of the coal drying. The two-phase rotary flow lignite drier comprises a drying chamber main body, a grid plate and an air chamber installed below the drying chamber main body, a drying hot air outlet pipeline connected with the upper part of the drying chamber main body and a dust removing device. The drying chamber main body has a variable cross section structure with a big cross section at the middle part and small cross sections at two ends; directional air caps are uniformly and concentrically installed on the grid plate at equal intervals; and the angle alpha between the output centre lines of two adjacent directional air caps on a same circle ranges from 5 degrees to 45 degrees. The drying chamber main body of the two-phase rotary flow lignite drier adopts the variable cross section structure, which is beneficial to forming the rotary flow and improving the wind speed so as to ensure the fluidization of material. The directional air caps are concentrically arrayed at equal intervals and in a certain angle; therefore, the two-phase rotary flow fluidization modes of a fluidization medium and a solid material can be better realized even in the condition of large fluidization medium quality, the degree of stability of the fluidization in a machine bed is improved, and friction and collision among particles can be better prevented.
Description
Technical field
The utility model relates to a kind of fluid bed brown coal drying device, belongs to coal chemical technology.
Background technology
China is the country that takes the primary energy resource with coal as the leading factor, and coal can provide the primary energy more than 65%, and coal production occupies first place in the world, and increases year by year.The coal resources recoverable reserves of China occupies the third place in the world, accounts for 11.5% of world's gross reserves.Wherein the brown coal reserves account for 16% of world's brown coal gross reserves, and major part concentrates on the North China.Along with to the continuous increase of energy demand with to the exhaustive exploitation of bituminous coal, anthracite resource, China will be more and more important to the development and utilization of brown coal, and be subjected to the great attention of State Council and National Development and Reform Committee.The technology of the employing pyrolysis brown coal of suiting measures to local conditions, normal pressure production makes coal gas, tar and semicoke, realizes the partial gasification and the liquefaction of brown coal, and it is lower to give full play to the brown coal price, the reactivity height, the advantage that volatile matter is high.But the brown coal water content is higher, is generally 25-60%.Brown coal moisture is too high will make troubles to follow-up pyrolytic process, reduce reaction temperature, increase equipment volume and operating cost, therefore, brown coal be carried out the committed step of dry brown coal pyrolytic process before pyrolysis.
At present, existing brown coal drying technology has tubular type steam heat-exchanging and fluid bed two big classes, and pipe type heat transfer exists the thermal efficiency low, and heat exchange area is big, needs shortcomings such as control granule size, and fluid bed can be used for dry wide-size distribution brown coal particle, thermal efficiency height.But carrying out heavy industrialization when operation, be difficult to control well the fluidization process of fluidization medium and solid particle, and the not timing of fluidizing agent wind direction causes the phenomenon of the inhomogeneous and aggravation particle gouging abrasion of cloth wind easily, thereby influenced dry effect.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of brown coal drying device of two-phase eddy flow, and the one, in the hothouse main body, form gas-solid two-phase eddy flow, guarantee the fluidization process of fluidization medium and solid particle; The 2nd, make cloth wind evenly directed, prevent the intergranular friction collision, improve fluidised degree of stability in the bed, thereby be applicable to large-scale production operation.
The technical solution of the utility model is as follows:
A kind of brown coal drying device of two-phase eddy flow, comprise the hothouse main body, be arranged in the air distribution plate and the air compartment of hothouse main body below, the dry-heat air outlet conduit that links to each other with hothouse main body top, and the cleaner that links to each other with the dry-heat air outlet conduit, it is characterized in that: described hothouse main body adopts the variable section structure that the cross section, middle part is big, two end sections are little; Evenly be covered with wind cap in equidistant concentric circles mode on the described air distribution plate.
In technique scheme, the angle α that is arranged in the center line of discharge of adjacent two wind caps on the same circle on the air distribution plate is 5 °～45 °.Described cleaner comprises gravity settling chamber and cyclone separator.
The utlity model has following beneficial effect and outstanding advantage: the hothouse main body adopts variable section structure, helps to form whirlwind and improves wind speed, guarantees the fluidisation of material.Wind cap adopts equidistant concentric circles and angled arrangement, even under the big condition of fluidizing agent amount, also can realize the streaming mode of fluidizing agent and solid material two-phase eddy flow better, improve fluidised degree of stability in the bed, prevent the intergranular friction collision preferably.
Description of drawings
Fig. 1 is the brown coal drying device structural principle schematic diagram of the two-phase eddy flow that provides of the utility model.
Fig. 2 is the schematic diagram that blast cap is arranged on the utility model air distribution plate.
Among the figure: the 1-air compartment; The 2-air distribution plate; The 3-discharge nozzle; 4-hothouse main body; The 5-feed pipe; 6-dry-heat air outlet conduit; The 7-wind cap; The 8-gravity settling chamber; The 9-cyclone separator; The 10-thermal chimney.
The specific embodiment
Describe concrete structure of the present utility model, operation principle and embodiment in detail below in conjunction with accompanying drawing:
Fig. 1 is the brown coal drying device structural representation of a kind of two-phase eddy flow provided by the utility model, the brown coal drying device of this two-phase eddy flow comprises hothouse main body 4, feed pipe 5, discharge nozzle 3, be arranged in the air distribution plate 2 and the air compartment 1 of hothouse main body below, the dry-heat air outlet conduit 6 and the cleaner that link to each other with hothouse main body top; Hothouse main body 4 adopts the variable section structure that the cross section, middle part is big, two end sections are little; Evenly be covered with wind cap 7 in equidistant concentric circles mode on the air distribution plate 2.The angle α that is arranged in the center line of discharge of adjacent two wind caps on the same circle on the air distribution plate 2 is 5 °～45 °; Cleaner comprise gravity settling chamber 8 and cyclone separator 9.
Operation principle of the present utility model is: high temperature drying medium (hot-air or hot flue gas) enters from air compartment 1 one sides by thermal chimney road 10, the wind cap 7 that passes on the air distribution plate 2 enters dry section, be covered with the wind cap of arranging in equidistant concentric circles mode 7 on the air distribution plate 2, the angle α of adjacent two the wind cap center line of discharge on the same circle is 5 °～45 °, fluidizing agent will evenly enter hothouse main body 4 along the arrangement mode orientation of wind cap, and it is distinguished and admirable to form directed whirlpool.Brown coal to be dried are fed by feed pipe 5, and form the spiral-flow type motion of solid particle under this directed whirlwind induced effect.In gas-solid two-phase eddy flow fluidisation, brown coal are dried gradually.Dried material will be discharged by the drainage line on the air distribution plate 3 under directed wind and blast effect.Dried hot blast carries the tiny material particles of part and enters gravity settling chamber 8 by dry-heat air outlet conduit 6, remove the dust of larger particles at this, remove the granule dust by cyclone separator 9 again, can effectively reduce the dust content in the exit gas, reduce the load of follow-up dust arrester.
The utility model is reasonable in design, and is simple in structure, can effectively realize the drying of wide-size distribution brown coal, and tentatively carries out drying back dedusting, and the brown coal raw material after the drying upgrading helps follow-up pyrolytic process.
Claims (3)
1. the brown coal drying device of a two-phase eddy flow, comprise hothouse main body (4), be arranged in the air distribution plate (2) and the air compartment (1) of hothouse main body below, the dry-heat air outlet conduit (6) and the cleaner that link to each other with hothouse main body top is characterized in that: described hothouse main body (4) adopts the variable section structure that the cross section, middle part is big, two end sections are little; Described air distribution plate (2) is gone up and evenly is covered with wind cap (7) in equidistant concentric circles mode.
2. the brown coal drying device of a kind of two-phase eddy flow according to claim 1 is characterized in that: the angle α that is arranged in the center line of discharge of adjacent two wind caps on the same circle on the air distribution plate (2) is 5 °～45 °.
3. according to the brown coal drying device of claim 1 or 2 described a kind of two-phase eddy flows, it is characterized in that: described cleaner comprises gravity settling chamber (8) and cyclone separator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200066814U CN201935525U (en) | 2011-01-11 | 2011-01-11 | Two-phase rotary flow lignite drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200066814U CN201935525U (en) | 2011-01-11 | 2011-01-11 | Two-phase rotary flow lignite drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935525U true CN201935525U (en) | 2011-08-17 |
Family
ID=44447043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200066814U Expired - Fee Related CN201935525U (en) | 2011-01-11 | 2011-01-11 | Two-phase rotary flow lignite drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201935525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222527A (en) * | 2015-10-15 | 2016-01-06 | 聊城鲁西聚碳酸酯有限公司 | A kind of novel fluidized bed drying device |
| CN105276962A (en) * | 2015-11-19 | 2016-01-27 | 中科合成油技术有限公司 | Coal drying device, coal drying system and coal drying method |
-
2011
- 2011-01-11 CN CN2011200066814U patent/CN201935525U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222527A (en) * | 2015-10-15 | 2016-01-06 | 聊城鲁西聚碳酸酯有限公司 | A kind of novel fluidized bed drying device |
| CN105276962A (en) * | 2015-11-19 | 2016-01-27 | 中科合成油技术有限公司 | Coal drying device, coal drying system and coal drying method |
| CN105276962B (en) * | 2015-11-19 | 2017-09-05 | 中科合成油技术有限公司 | A kind of coal drying device, drying system and drying means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20140111 |