CN109708129A - Combine water-cooled grate - Google Patents
Combine water-cooled grate Download PDFInfo
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- CN109708129A CN109708129A CN201910060578.9A CN201910060578A CN109708129A CN 109708129 A CN109708129 A CN 109708129A CN 201910060578 A CN201910060578 A CN 201910060578A CN 109708129 A CN109708129 A CN 109708129A
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- front wall
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Abstract
The invention discloses a kind of combination water-cooled grates, including front wall membrane wall, rear wall membrane wall, fire grate to be made of the fixed grate of leading portion and the water-cooling vibration furnace grate of back segment, and fixed grate is higher than water-cooling vibration furnace grate；Front wall membrane wall includes upper section front wall membrane wall and lower section front wall membrane wall, and fixed grate and at least one material inlet are arranged between upper section front wall membrane wall and lower section front wall membrane wall.Fixed grate and water-cooling vibration furnace grate are tilting fixed grate, along fuel the direction of motion backward, tilt down；Ventilation hole, fixed grate arranged beneath air compartment and ash bucket are set on fixed grate.Since leading portion fire grate is inclination fixed grate, fuel is advanced downwardly by eminence, and the difference in height between two fire grates, fuel increases fuel gas permeability in scrolling down through, it can adequately preheat, dry, be conducive to biomass fuel combustion, adapt to the burning of high moisture fuel, pluralities of fuel, the burnout rate of biomass fuel is greatly improved, efficiency of combustion is improved.
Description
Technical field
The invention belongs to the biomass fuel pots of biomass fuel boiler technical field more particularly to a kind of composite grate
Furnace.
Background technique
As clean renewable energy, the utilization of biomass energy has become global common recognition.Mine is replaced with biomass
Object fuel is to reduce CO2 discharge, reduces the ideal style of greenhouse gas emission.For to examining in terms of environment and energy resource structure
Consider, country gives support on policy and popularization in terms of using biomass energy, limits the construction of coal-fired small unit, has examined very
More biomass fuel power plant, this just makes biomass boiler have very big market.Biomass electric power plant boiler mostly uses greatly at present
Single vibrating-grate stoker, traveling-grate stoker or reciprocal grate, these combustion types have special requirement to biomass fuel,
Such as the moisture of fuel, ash content are had certain limitations, it is desirable that moisture, ash content cannot be too high, but the characteristics of domestic biomass fuel just
It is that fuel moisture is high, calorific value is low.Biomass electric power plant undoubtedly will receive the restriction of biomass fuel.So construction bio-fuel power plant
What is considered first is fuel risk, i.e. fuel source problem, and the power plant of single-fuel is difficult to meet the national conditions of China.Internal fuel
Purchasing market is often high moisture fuel or even pluralities of fuel mixed form, this makes biomass fuel boiler in actual motion
Cause fuel combustion insufficient in the process, unburnt fuel is just discharged by slag mouth, and utilization rate is low.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of domestic high-moisture biomass fuel of adaptation and
A variety of mixing biomass fuel can improve the combination water-cooled grate of efficiency of combustion.
Present invention technical solution used for the above purpose is:
A kind of combination water-cooled grate, including fire grate, membrane wall, the two sides of fire grate are respectively equipped with left side water cooling header and right side water cooling
Header, membrane wall include front wall membrane wall, rear wall membrane wall, front wall membrane wall, rear wall membrane wall lower end pass through front wall respectively
Lower header, rear wall lower header are connected with left side water cooling header and right side water cooling header, it is characterised in that: the fire grate is by leading portion
Fixed grate and back segment water-cooling vibration furnace grate composition, fixed grate be higher than water-cooling vibration furnace grate；The front wall membrane wall
Including upper section front wall membrane wall and lower section front wall membrane wall, between upper section front wall membrane wall and lower section front wall membrane wall described in setting
Fixed grate and at least one material inlet.
In order to extend residence time of the fuel on fire grate, in combinations of the above water-cooled grate, the fixed grate is
Tilting fixed grate, along fuel the direction of motion backward, tilt down；Ventilation hole is set on fixed grate, under fixed grate
Side's arrangement air compartment and ash bucket.
Equally, the water-cooling vibration furnace grate be tilting water-cooling vibration furnace grate, along fuel the direction of motion backward, downwards
Inclination.
In combinations of the above water-cooled grate, the material inlet is tilting material inlet, and material inlet includes collecting on material inlet
Case, material inlet lower header and connecting tube；Material inlet upper collecting chamber in upper, material inlet lower header under, material inlet lower header it is preceding, give
Material mouth upper collecting chamber is rear；The upper end of connecting tube is connected with material inlet upper collecting chamber, and lower end is connected with material inlet lower header, forms one
Or multiple material inlets；
The fixed grate is located at material inlet lower part, and fixed grate is water cooled membrane wall, upper end is connected with material inlet lower header,
Lower end is connected with fixed grate lower header,
The lower end of upper section front wall membrane wall is connected with material inlet upper collecting chamber, and upper end is connected with front wall upper collecting chamber,
The upper end of lower section front wall membrane wall is connected with fixed grate lower header, and lower end passes through front wall lower header and left side water cooling header
It is connected with right side water cooling header.
In combinations of the above water-cooled grate, the water-cooling vibration furnace grate is water cooled membrane wall, and upper end goes out with water-cooled grate
Mouth header is connected, lower end is connected with water-cooled grate import header；The water-cooled grate outlet header by top flexible pipe with
Fixed grate lower header is connected, and water-cooled grate import header is connected by lower flex pipe with bottom connecting tube, and bottom connects
Adapter tube is connected with left side water cooling header and right side water cooling header；Under between fixed grate lower header and water-cooled grate outlet header
Section front wall membrane wall is equipped with to the inclined bending segment of water-cooling vibration furnace grate.
In combinations of the above water-cooled grate, batcher is disposed with before the material inlet.
The working method of combination water-cooled grate of the invention are as follows:
Biomass fuel is sent into material inlet by batcher, enters tilting fixed grate by gravity vertical drop, biology
Radiation of matter fuel during decline by furnace high-temperature flue gas preheats fuel, is dried, evaporation water；Biomass fuel
Material is fallen on tilting fixed grate, gradually downward along fire grate under the collective effect of hot wind of lower part air compartment and gravity,
Rolling-operation backward, the process for having a rolling to fall by height fall herein when reaching at two kinds of fire grate ladders extend combustion
Material stays aloft the time, further preheating, drying, while increasing the permeability of fuel, is sufficiently mixed combustion-supporting oxygen.After drying
Fuel fall on water-cooling vibration furnace grate, by water-cooling vibration furnace grate vibration gradually move backward, in this moving process sufficiently
Burning is discharged after burning by the slag-drip opening of tail portion.
This combustion system adapts to the burning of high moisture fuel, pluralities of fuel, this is because leading portion fire grate is solid using inclination
Determine fire grate, fuel by eminence advance downwardly and two fire grates between difference in height, this process is conducive to the drying of fuel,
And fuel increases fuel gas permeability in scrolling down through, and can adequately preheat, dry, and is more conducive to biomass fuel combustion
It burns, burning is made sufficiently to greatly improve the burnout rate of biomass fuel, improve the efficiency of combustion of equipment.Its effect be it is aobvious and
It is clear to.
Detailed description of the invention
Attached drawing 1 is the schematic diagram of present invention combination water-cooled grate.
In figure: 1- upper section front wall membrane wall, 2- material inlet upper collecting chamber, 3- connecting tube, 4- material inlet lower header, 5- stationary furnace
Row, 6- fixed grate lower header, 7- lower section front wall membrane wall, 7-1 bending segment, 8- front wall lower header, the top 9- flexible pipe, 10-
Water-cooled grate outlet header, 11- water-cooling vibration furnace grate, 12- water-cooled grate import header, 13- lower flex pipe, the bottom 14- connect
It takes over, 15 left and right side water cooling headers, 16- air compartment, 17- ash bucket, 18- batcher, wall membrane wall after 19-, 20- slag-drip opening.
Specific embodiment
Below by non-limiting embodiment and in conjunction with attached drawing, the present invention is described further.
Referring to attached drawing, a kind of combination water-cooled grate, including fire grate, membrane wall, the two sides of fire grate are respectively equipped with left side water cooling
Header and right side water cooling header, membrane wall include front wall membrane wall, rear wall membrane wall 19, front wall membrane wall, rear wall membrane wall 19
Lower end pass through front wall lower header 8 respectively, rear wall lower header is connected with left side water cooling header and right side water cooling header, the furnace
Row is made of the fixed grate 5 of leading portion and the water-cooling vibration furnace grate 11 of back segment, and fixed grate 5 is higher than water-cooling vibration furnace grate 11；Institute
The front wall membrane wall stated includes upper section front wall membrane wall 1 and lower section front wall membrane wall 7, upper section front wall membrane wall 1 and lower section front wall
The fixed grate 5 and at least one material inlet are set between membrane wall 7.
The fixed grate 5 be tilting fixed grate, along fuel the direction of motion backward, tilt down；Stationary furnace
Ventilation hole, 5 arranged beneath air compartment 16 of fixed grate and ash bucket 17 are set on row 5.
Equally, the water-cooling vibration furnace grate 11 be tilting water-cooling vibration furnace grate, along fuel the direction of motion backward, to
Lower inclination.
The material inlet is tilting material inlet, and material inlet includes material inlet upper collecting chamber 2, material inlet lower header 4 and connects
Adapter tube 3；In upper, material inlet lower header 4 under, material inlet lower header 4 exists material inlet upper collecting chamber 2 in preceding, material inlet upper collecting chamber 2
Afterwards；2 connecting tubes 3 and material inlet upper collecting chamber 2, material inlet lower header 4 form a rectangle material inlet, the upper end of connecting tube 3 with
Material inlet upper collecting chamber 2 is connected, and lower end is connected with material inlet lower header 4；According to the specification of stove, multiple material inlets can be set；
Batcher 18 is disposed with before the material inlet.
The fixed grate 5 is located at material inlet lower part, and fixed grate 5 is water cooled membrane wall, upper end and material inlet next part
Case 4 is connected, lower end is connected with fixed grate lower header 6,
The lower end of upper section front wall membrane wall 1 is connected with material inlet upper collecting chamber 2, and upper end is connected with front wall upper collecting chamber,
The upper end of lower section front wall membrane wall 7 is connected with fixed grate lower header 6, and lower end passes through front wall lower header 8 and left side water cooling
Header is connected with right side water cooling header.
The water-cooling vibration furnace grate 11 is water cooled membrane wall, upper end is connected with water-cooled grate outlet header 10, lower end and
Water-cooled grate import header 12 is connected；The water-cooled grate outlet header 10 passes through top flexible pipe 9 and fixed grate next part
Case 6 is connected, and water-cooled grate import header 12 is connected by lower flex pipe 13 with bottom connecting tube 14, bottom connecting tube 14
It is connected with left side water cooling header and right side water cooling header；Under between fixed grate lower header 6 and water-cooled grate outlet header 10
Section front wall membrane wall 7 is equipped with to the inclined bending segment 7-1 of water-cooling vibration furnace grate 11.
The feed process of the present embodiment is as follows:
Biomass fuel enters burner hearth by front-furnace feeding machine forced feeding, and by gravity vertical drop, biomass fuel exists
Radiation during decline by furnace high-temperature flue gas preheats fuel, dried, evaporation water；Biomass fuel, which is fallen in, to incline
On inclined fixed grate 5, from the high-end gradually to the rolling of the low side of fixed grate 5, movement, in the process, combustion of fixed grate 5
Expect the drying functions by the radiant heat in burner hearth and the high temperature First air from 5 bottom of fixed grate, the water in fuel
Divide and is gradually precipitated.Fuel gradually breaks up the fuel united downwards, while rolling backward, increases the gas permeability of fuel.When
When fuel motion is to the lower end of fixed grate 5, by the height fall herein with water-cooling vibration furnace grate 11, fuel has a rolling
The process of whereabouts, since lower section front wall membrane wall 7 is equipped with bending segment 7-1, blocking of the fuel by bending segment 7-1, along curved
Trisection 7-1 is fallen downwards, it is ensured that all fuel all fall on water-cooling vibration furnace grate 11 and are unlikely to fall to fire grate
Bottom extends fuel during falling and stays aloft the time, further preheating, drying, while increasing the gas permeability of fuel
Can, it is sufficiently mixed combustion-supporting oxygen, further increases fuel in the uniformity of entire burner hearth cloth.Fuel falls to water-cooling vibration furnace grate
11 high-end postignition burning, water-cooling vibration furnace grate driving mechanism does intermittent exercise with certain frequency, with Water-cooling vibration furnace
The movement for arranging driving mechanism drives entire water-cooling vibration furnace grate 11 to shake, while driving the fuel on fire grate downward in burning
Movement, and new fuel then constantly falls supplement by fixed grate 5, fuel lime-ash of final after-flame etc. is by water-cooling vibration furnace grate 11
The slag-drip opening 20 of lower end is fallen into dragveyer, completes entire combustion process.
In the present embodiment, the process of the water in fire grate and pipeline is as follows:
Water enters left and right side water cooling header 15 by drum by down-comer, by front wall lower header among left and right side water cooling header 15
8 are connected with bottom connecting tube 14, and water respectively enters bottom connecting tube 14 and front wall lower header 8 by left and right side water cooling header 15, into
The water for entering bottom connecting tube 14 enters water-cooled grate import header 12 by the lower flex pipe 13 being connected with bottom connecting tube 14,
Water-cooled grate outlet header 10 is entered by water-cooling vibration furnace grate 11 again, is then entered under fixed grate by top flexible pipe 9
Header 6 finally passes sequentially through fixed grate 5, material inlet lower header 4, connecting tube 3, material inlet upper collecting chamber 2, upper section front wall membrane type
Wall 1 enters front wall upper collecting chamber；Water into front wall lower header 8 enters fixed grate next part upwardly through lower section front wall membrane wall 7
Case 6, two path water complete the Water flow-path of entire fire grate part in the merging of fixed grate lower header 6, mixing.
Embodiment enumerated above is not to technical solution described in the invention only for understanding that the present invention is used
Limitation, the those of ordinary skill in relation to field on the basis of the technical solution described in claim, can also make a variety of changes
Change or deformation, all equivalent variations or deformation should all be covered within the scope of the claims of the present invention.
Claims (6)
1. a kind of combination water-cooled grate, including fire grate, membrane wall, the two sides of fire grate are respectively equipped with left side water cooling header and right side water
Cold header, membrane wall include front wall membrane wall, rear wall membrane wall, front wall membrane wall, rear wall membrane wall lower end pass through respectively before
Wall lower header, rear wall lower header are connected with left side water cooling header and right side water cooling header, it is characterised in that: the fire grate is by preceding
The fixed grate of section and the water-cooling vibration furnace grate composition of back segment, fixed grate are higher than water-cooling vibration furnace grate；The front wall membrane type
Wall includes upper section front wall membrane wall and lower section front wall membrane wall, and institute is arranged between upper section front wall membrane wall and lower section front wall membrane wall
The fixed grate and at least one material inlet stated.
2. combination water-cooled grate according to claim 1, it is characterised in that: the fixed grate is tilting stationary furnace
Row, along fuel the direction of motion backward, tilt down；Ventilation hole is set on fixed grate, fixed grate arranged beneath air compartment and
Ash bucket.
3. combination water-cooled grate according to claim 1, it is characterised in that: the water-cooling vibration furnace grate is tilting water
Cold vibrating-grate stoker, along fuel the direction of motion backward, tilt down.
4. combination water-cooled grate according to claim 1, it is characterised in that: the material inlet is tilting material inlet,
Material inlet includes material inlet upper collecting chamber, material inlet lower header and connecting tube；Material inlet upper collecting chamber exists in upper, material inlet lower header
Under, material inlet lower header is in preceding, material inlet upper collecting chamber rear；The upper end of connecting tube is connected with material inlet upper collecting chamber, lower end with give
Material mouth lower header is connected, and forms one or more material inlets；
The fixed grate is located at material inlet lower part, and fixed grate is water cooled membrane wall, upper end is connected with material inlet lower header,
Lower end is connected with fixed grate lower header,
The lower end of upper section front wall membrane wall is connected with material inlet upper collecting chamber, and upper end is connected with front wall upper collecting chamber,
The upper end of lower section front wall membrane wall is connected with fixed grate lower header, and lower end passes through front wall lower header and left side water cooling header
It is connected with right side water cooling header.
5. combination water-cooled grate according to claim 1, it is characterised in that: the water-cooling vibration furnace grate is water cooled membrane
Wall, upper end is connected with water-cooled grate outlet header, lower end is connected with water-cooled grate import header；The water-cooled grate exports collection
Case is connected by top flexible pipe with fixed grate lower header, and water-cooled grate import header is connected by lower flex pipe and bottom
Adapter tube is connected, and bottom connecting tube is connected with left side water cooling header and right side water cooling header；Fixed grate lower header and water cooling furnace
Lower section front wall membrane wall between outlet header is equipped with to the inclined bending segment of water-cooling vibration furnace grate.
6. combination water-cooled grate according to claim 1, it is characterised in that: be disposed with batcher before the material inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060578.9A CN109708129A (en) | 2019-01-22 | 2019-01-22 | Combine water-cooled grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060578.9A CN109708129A (en) | 2019-01-22 | 2019-01-22 | Combine water-cooled grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109708129A true CN109708129A (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910060578.9A Pending CN109708129A (en) | 2019-01-22 | 2019-01-22 | Combine water-cooled grate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070202454A1 (en) * | 2003-12-18 | 2007-08-30 | Matthias Mersmann | "Bulk Material Cooling Device For Cooling Hot Materials That Are To Be Cooled" |
| CN202647795U (en) * | 2012-05-21 | 2013-01-02 | 济南锅炉集团有限公司 | Double water-cooled oscillating grate |
| CN103017145A (en) * | 2012-12-11 | 2013-04-03 | 华北电力大学 | Efficient segmentation control combustion method and system for biomass boiler with charcoal combustion cell |
| CN105927966A (en) * | 2016-05-27 | 2016-09-07 | 董磊 | Reciprocating grate biomass boiler hearth |
| CN107120662A (en) * | 2017-06-22 | 2017-09-01 | 江苏华本环境科技有限公司 | A kind of multistage adjustable drop height type fire grate of forwards waste incinerator |
| CN209840124U (en) * | 2019-01-22 | 2019-12-24 | 济南锅炉集团有限公司 | Combined water-cooled grate |
-
2019
- 2019-01-22 CN CN201910060578.9A patent/CN109708129A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070202454A1 (en) * | 2003-12-18 | 2007-08-30 | Matthias Mersmann | "Bulk Material Cooling Device For Cooling Hot Materials That Are To Be Cooled" |
| CN202647795U (en) * | 2012-05-21 | 2013-01-02 | 济南锅炉集团有限公司 | Double water-cooled oscillating grate |
| CN103017145A (en) * | 2012-12-11 | 2013-04-03 | 华北电力大学 | Efficient segmentation control combustion method and system for biomass boiler with charcoal combustion cell |
| CN105927966A (en) * | 2016-05-27 | 2016-09-07 | 董磊 | Reciprocating grate biomass boiler hearth |
| CN107120662A (en) * | 2017-06-22 | 2017-09-01 | 江苏华本环境科技有限公司 | A kind of multistage adjustable drop height type fire grate of forwards waste incinerator |
| CN209840124U (en) * | 2019-01-22 | 2019-12-24 | 济南锅炉集团有限公司 | Combined water-cooled grate |
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