CN201276551Y - Fluidized bed type high moisture solid fuel quality improving reaction device - Google Patents
Fluidized bed type high moisture solid fuel quality improving reaction device Download PDFInfo
- Publication number
- CN201276551Y CN201276551Y CN 200820222113 CN200820222113U CN201276551Y CN 201276551 Y CN201276551 Y CN 201276551Y CN 200820222113 CN200820222113 CN 200820222113 CN 200820222113 U CN200820222113 U CN 200820222113U CN 201276551 Y CN201276551 Y CN 201276551Y
- Authority
- CN
- China
- Prior art keywords
- solid fuel
- mild
- fluidized bed
- moisture solid
- reaction unit
- 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 - Lifetime
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a quality improving reaction unit for fluidized bed high moisture solid fuel, comprising a drying and mild gasification reaction furnace hearth 2, the outlet of which is connected with a separator 10; a wind chamber 8 is arranged below the drying and mild gasification reaction furnace hearth 2, the middle of the furnace hearth is separated by an air distribution plate 5; the separator 10 is connected with a cooling system of fine particle finished products by a standpipe 11. The dehydration and quality improvement of the high moisture solid fuel is carried out by the heat provided in the reactions of pyrolysis, mild gasification, partial combustion and the like of the high moisture solid fuel in the gasification reaction unit, thereby achieving the goal of improving the quality of the high moisture solid fuel and controlling the water content of the improved products to be less than 12 percent. The reaction unit has the characteristics that the process is simple, the operation is convenient, the energy and water consumption is low, the quality of the improved products of the high moisture solid fuel is high and the reaction unit can realize large-scale production without large-scale mechanical equipment.
Description
Technical field
The utility model relates to a kind of high-moisture solid fuel upgrading reaction unit, and particularly a kind of fluidized bed type high-moisture solid fuel upgrading reaction unit is used for the solid-fuelled drying and upgradings of high-moisture such as brown coal, coal slime.
Background technology
China is the more rich country of lignite resource in the world, and according to statistics, the whole nation is existing verifies 1,300 hundred million tons of brown coal retained reserves, accounts for about 13% of national coal total reserves.In the present explored brown coal retained reserve of China, mainly be distributed in area, northeast, the Inner Mongol, account for 75% of national brown coal retained reserve; The southwest accounts for about 20%; Other areas account for about 5%.
The young coal that brown coal are a kind of easy-weathering spontaneous combustions, thermal value is low, water content is high.In China, brown coal are mainly used in direct combustion power generation.Because moisture content is higher in the brown coal, generally between 30%～60%, if participate in burning directly, in ignition process, need lot of energy on the one hand, brown coal volatile matter height in addition, in the transportation of brown coal and pulverizing process, blast easily, therefore in burning control, certain degree of difficulty is arranged; Simultaneously, because the process of moisture evaporation can be taken away a large amount of heats, make the boiler exhaust gas thermosteresis very big, power plant thermal efficiency is lower.Owing to higher moisture content, increased the transportation cost of brown coal, limited brown coal by the transportation of mining area, and also there are problems such as brown coal generation spontaneous combustion, blast in long distance transportation to regional power plant far away.Therefore, how efficiently removing the moisture in the brown coal easily, and eliminate the potentially dangerous of the generation spontaneous combustion of brown coal dehydration back, blast, thereby improve the quality of brown coal, is to enlarge the brown coal range of application, improves the technical problem that the brown coal economic worth needs emphasis to solve.
After brown coal dehydrations and the upgrading processing, its composition and character level off to bituminous coal, will more help utilizing, transportation and storage.The a large amount of designs of China's active service use the unit of bituminous coal, since the variation of coal source situation, the supply of fuel anxiety, and cost is not according to height not down.If the fuel that can utilize the brown coal upgrading to make is not carrying out under the situation of big technological transformation former boiler unit, directly mix to burn and use, can effectively utilize lignite resource, significantly improve the utility value of brown coal, be of great practical significance and good and economic.
At present, domestic and international existing multiple brown coal drying and upgrading technology, separate the high-temperature flue gas that its drying source generates as hot flue gas producer burning, the high-temperature steam etc. with drying or pyrolytic gasification process, these upgrading technical processes or adopt bed technology, perhaps only to brown coal carry out drying, in order to guarantee that the stable needs of product carry out mechanical-moulded processing etc. after the upgrading.These technology ubiquities system complex, high, the problems such as water loss is big, dewatering efficiency is low, industrial scale is little, seriously polluted, the drying and upgrading productive rate is low, poor quality of power consumption, can not satisfy coal-burning power plant and other industrial needs.
Except brown coal, for high moisture content solid fuels such as coal slimes, have the heavy demand that carries out drying and upgrading equally, this patent also can be applied to the dehydration of other high-moisture solid fuels such as coal slime and improve quality except being applied to the brown coal upgrading.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides that a kind of technology is simple, easy to operate, energy consumption is low, water consumption is few, the high-quality height of upgrading productive rate, can satisfy the fluidized bed type high-moisture solid fuel upgrading reaction unit of maximization production requirement.
To achieve these goals, the technical solution that the utility model adopts is: fluidized bed type high-moisture solid fuel upgrading reaction unit, comprise dry and mild-gasification reaction burner hearth 2, drying is connected a separator 10 with mild-gasification reaction burner hearth 2 top exhanst gas outlets, dry below with mild-gasification reaction burner hearth 2 is provided with air compartment 8, the centre separates with air distribution plate 5, on the air distribution plate 5 or side arrangement blast cap and coarse particles finished product drainage conduit 7 are arranged, coarse particles finished product drainage conduit 7 is connected with coarse particles finished product cooling system.Be provided with high-moisture solid fuel at dry middle part and give inlet 3 with mild-gasification reaction burner hearth 2.Separator 10 is connected with fine particle finished product cooling system by standpipe 11.
Compared with prior art, innovative point of the present utility model is: this device adopts the fluidization principle, realize in a reaction unit, finishing the physics and the chemical upgrading change procedure such as drying, pyrolysis, mild-gasification, partial combustion of high-moisture solid fuel, do not needed the external world that extra thermal source is provided; Enter dry amount of oxygen by control and control response intensity in dry and the mild-gasification section with mild-gasification reaction burner hearth; Heat that mild-gasification, partial combustion produce takes place and is used to keep temperature in dry and the mild-gasification section in high-moisture solid fuel in dry and mild-gasification section, simultaneously high-moisture solid fuel is carried out drying; The ash-laden gas that generates is under the effect of separator, and most of particle is captured down as the fine particle finished product, and flue gas becomes clean low-heat value gas through the tail flue gas treatment system after fully reclaiming heat.The utility model can be controlled upgrading moisture content of finished products content＜12%.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in further detail.
Burner hearth of the present utility model is by the fire-resistant abrasion-proof brick, heat-insulating material and outer steel shell, also can constitute hearth outer wall 1 by water-cooled light pipe or water-cooled membrane wall, reaction unit moves with the fluidized-bed form, comprise dry and mild-gasification reaction burner hearth 2, its top exhanst gas outlet is connected with separator 10 by horizontal flue 9, separator 10 bottoms are connected with fine particle finished product cooling system by standpipe 11, dry and mild-gasification reaction burner hearth 2 bottoms are set to the emulsion zone of taper or other structure, emulsion zone top is uniform freeboard of fluidized bed up and down, common drying and the mild-gasification reaction burner hearth 2 formed, offer high-moisture solid fuel at dry middle part and give inlet 3 with mild-gasification reaction burner hearth 2, the bottom that dry and mild-gasification reacts the emulsion zone of burner hearth 2 is provided with air compartment 8, middle separate with air distribution plate 5, on the air distribution plate 5 or side arrangement blast cap and coarse particles finished product drainage conduit 7 are arranged.During operation, high-moisture solid fuel is by sending into dry and mild-gasification reaction burner hearth 2 for inlet 3, high-moisture solid fuel burns in burner hearth, the mild-gasification reaction, and the heat of release is used to keep fire box temperature, and high-moisture solid fuel is carried out drying and upgrading.The upgrading finished product macrobead part that generates enters macrobead finished product cooling system by drainage conduit 7, send into fine particle finished product cooling system via standpipe 11 than fine particle under the effect of separator 10 and cool off, coarse particles and fine particle finished product are sent into finished bin after cooling.
In the accompanying drawing: 1 is hearth outer wall; 2 is dry and mild-gasification reaction burner hearth; 3 is high The moisture solid fuel is given entrance; 4 is access hole; 5 is air distribution plate; 6 are ignition air duct and sending The air channel; 7 is coarse granule finished product drainage conduit; 8 is air compartment; 9 is horizontal flue; 10 for separating Device; 11 is standpipe.
Claims (9)
1, fluidized bed type high-moisture solid fuel upgrading reaction unit, it is characterized in that, comprise a drying and mild-gasification reaction burner hearth (2), comprise that also one links to each other with separator (10) and dry the outlet with mild-gasification reaction burner hearth (2), dry below with mild-gasification reaction burner hearth (2) is provided with air compartment (8), middle separate, be furnished with blast cap on the air distribution plate (5) and be connected with coarse particles finished product drainage conduit (7) with air distribution plate (5).
2, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said pyrolytic gasification is dry to be connected with separator (10) with the horizontal flue (9) of mild-gasification reaction burner hearth (2) by its upper end.
3, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, is furnished with high-moisture solid fuel at dry middle part with mild-gasification reaction burner hearth (2) and gives inlet (3).
4, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said coarse particles finished product drainage conduit (7) is connected with coarse particles finished product cooling system.
5, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said air compartment (8) connects ignition air duct and blast tube (6).
6, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said separator (10) is connected with fine particle finished product cooling system by standpipe (11), and separator (10) upper outlet is connected with back-end ductwork.
7, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1, it is characterized in that, said drying and mild-gasification reaction burner hearth (2) bottom is an emulsion zone, and the emulsion zone top is freeboard of fluidized bed uniformly up and down, and dry react burner hearth (2) with mild-gasification common the composition.
8, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said drying and mild-gasification reaction burner hearth (2) are made of fire-resistant abrasion-proof brick, heat-insulating material and outer steel shell.
9, fluidized bed type high-moisture solid fuel upgrading reaction unit as claimed in claim 1 is characterized in that, said drying and mild-gasification reaction burner hearth (2) are made of water-cooled light pipe or water-cooled membrane wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820222113 CN201276551Y (en) | 2008-10-28 | 2008-10-28 | Fluidized bed type high moisture solid fuel quality improving reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820222113 CN201276551Y (en) | 2008-10-28 | 2008-10-28 | Fluidized bed type high moisture solid fuel quality improving reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201276551Y true CN201276551Y (en) | 2009-07-22 |
Family
ID=40894134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820222113 Expired - Lifetime CN201276551Y (en) | 2008-10-28 | 2008-10-28 | Fluidized bed type high moisture solid fuel quality improving reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201276551Y (en) |
-
2008
- 2008-10-28 CN CN 200820222113 patent/CN201276551Y/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101412930B (en) | Quality improving reaction device for high-moisture solid fuel and process thereof | |
| CN102041101B (en) | Gasification method with gas waste heat utilization | |
| CN101220299B (en) | Device and method for production synthesis gas energy conservation and emission reduction of static bed gas making furnace | |
| CN102864674B (en) | Device and method for recycling gasified and burned alkali for straw pulp papermaking black liquor circulating fluidized bed | |
| CN101717681A (en) | Solid fuel upgrading reaction device and process thereof | |
| CN101671578A (en) | Combustible material plasma high-temperature gasification technique and equipment thereof | |
| CN103045275B (en) | A kind of self-heated pyrolysis method | |
| CN101818092B (en) | Integrated fluidized bed mild-gasification lignite upgrading system and technology | |
| CN205088193U (en) | Up -draft fixed bed gasifier of preparation low temperature, low tar gas | |
| CN101289621A (en) | Process for preparing carbocoal, coke tar and coal gas by treating bovey coal by suspending pyrogenation device | |
| CN105694935B (en) | Dry distillation and activation integrated furnace for pulverized coal | |
| CN101289622B (en) | Process for upgrading of bovey coal by solid thermal-loading suspending pyrogenation device of bovey coal | |
| CN102746902B (en) | Gasification method of organic wastes and special gasification furnace | |
| CN105273763A (en) | Heat pipe heating type biomass and coal segmented collaborative pyrolysis system | |
| CN201885569U (en) | Energy-saving comprehensive heating furnace for using coke-oven gas to make methanol with side convection sections at sides of two radiation chambers | |
| CN109735371A (en) | A kind of biomass circulating fluidized bed direct-combustion boiler and its with gasification furnace coupled electricity-generation co-producing active carbon system | |
| CN100498069C (en) | Circulating fluid bed boiler for mixing, burning and blowing air | |
| CN1025568C (en) | Producing method and device for dry distilation coal gas | |
| CN201276551Y (en) | Fluidized bed type high moisture solid fuel quality improving reaction device | |
| CN101921625A (en) | Method and device for producing syngas by combustion and gasification of double cylinders | |
| CN104787761A (en) | Device and method for quickly preparing powdered active coke | |
| WO2019001516A1 (en) | Wet sludge incineration method and fluidized bed incinerator | |
| CN107739630A (en) | A kind of Biomass Gasification in Circulating Fluidized Bed device | |
| CN204529317U (en) | The burnt quick preparation device of a kind of powder activity | |
| CN207632751U (en) | A kind of Biomass Gasification in Circulating Fluidized Bed device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090722 |