CN101382289B - Garbage prewarming and drying arrangement - Google Patents
Garbage prewarming and drying arrangement Download PDFInfo
- Publication number
- CN101382289B CN101382289B CN2008102242527A CN200810224252A CN101382289B CN 101382289 B CN101382289 B CN 101382289B CN 2008102242527 A CN2008102242527 A CN 2008102242527A CN 200810224252 A CN200810224252 A CN 200810224252A CN 101382289 B CN101382289 B CN 101382289B
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- fire grate
- skeleton
- drying
- locating hole
- grate segment
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- 238000001035 drying Methods 0.000 title claims abstract description 94
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 56
- 238000012802 pre-warming Methods 0.000 title 1
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 7
- 229910001208 Crucible steel Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 33
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000012216 screening Methods 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 13
- 239000011449 brick Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 230000003134 recirculating effect Effects 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010782 bulky waste Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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Abstract
The invention discloses a garbage preheating and drying device, which consists of a framework, fire grate segments and a drying air chamber, the fire grate segment is cast by heat-resistant cast iron or heat-resistant cast steel and is arranged above the framework; a front-end positioning orifice and a back-end positioning orifice are arranged in the inner side of the fire grate segment, and tapered-distributing air vents are arranged on the fire grate segment; the rear of the drying device is steeped inside a circulating fluid bed dense-phase region and is built by laying heat-resistant and wear-resistant materials. The garbage preheating and drying device adopts one level arrangement or two-level arrangement, wherein in the two-level arrangement, a front level and a back level are arranged in a staged way. The preheating and drying device in each level consists of over two rows of the fire grate segments, and each row has over two fire grate segments; each row of the fire grate segments are positioned by a front-end positioning shaft and a back-end positioning shaft; the front and the back rows of the fire grate segments are arranged in in the staged way. The garbage preheating and drying device has the advantages that the staged combination of multiple rows of the fire grate segments not only improves drying effect, but also prevents structure destroy caused by heat expansion; the staged arrangement of the two-level drying devices leads garbage to fall off and become loose in the drying process, thus improving the garbage drying effect.
Description
Technical field
The present invention relates to a kind of garbage pre-heating and drying mechanism, belong to field of power machinery.
Background technology
In the process of circulating fluid bed garbage furnace burning domestic garbage, refuse moisture content and the stability and the rubbish burn-off rate that change the incinerator operation have significant effects.Simultaneously, refuse moisture content and refuse thermal value have confidential relation, usually, refuse moisture content is high more, and refuse thermal value is low more, in order to realize the smooth combustion of rubbish, the auxiliary fuel of required interpolation is just many more in combustion process, thereby has increased the operating cost of incinerator.For operation stability and the rubbish burn-off rate that improves incinerator, and the operating cost of reduction incinerator, before waste incineration, carry out the garbage pre-heating drying and show important especially.
In order to realize the predrying of high-moisture rubbish, the research of various drying devices is also arranged, as have the lorry of liquid-leaking nozzle and hot blast manifold, utilize high-temperature flue gas to carry out dry drumdrier, and the drying oven etc. that utilizes the smoke evaporative refuse moisture.These drying devices mostly are independently drying device greatly, for reaching the environment protection emission purpose, also need at exit outfit exhaust gas processing device, even need the percolate of extra process discharging.In addition, above-mentioned drying garbage device is difficult to satisfy the demand of bulky refuse CIU garbage pre-heating drying mostly.
People such as Zhang Yanguo had once invented a kind of charging and drying device (ZL 01201538.5) that is used for garbage incinerating system, this device is made up of feed hopper and the material feed mechanism that is arranged on below the feed hopper, and the material feed mechanism comprises slide block propulsive mechanism and mobile drying bed.Before this device is applied in the recirculating fluidized bed CIU, the preheating and drying and the charging of high-moisture rubbish have successfully been realized.But this patent does not provide the architectural feature of this drying device.
Summary of the invention
The object of the present invention is to provide the structure of garbage pre-heating and drying mechanism, and on the basis of above-mentioned patent, improve the layout of garbage pre-heating and drying mechanism, make the garbage pre-heating drying effect of bulky refuse CIU more stable, effectively reduce refuse moisture and change the influence of fluctuations that circulating fluid bed garbage is caused.
The present invention is achieved through the following technical solutions:
A kind of technical scheme is: a kind of garbage pre-heating and drying mechanism, constitute by skeleton, dry air compartment and the fire grate segment that is arranged on skeleton top, described fire grate segment is formed by heat-resisting cast iron or heat resisting cast steel casting, the fire grate segment inboard is provided with front end locating hole and rear end locating hole, and the skeleton both sides are provided with the skeleton locating hole.Described fire grate segment is provided with tapering type wind distributing hole; The end of drying device is immersed in the recirculating fluidized bed emulsion zone, adopts refractory material to build by laying bricks or stones; Every grate furnace screening is by same front end locating shaft and same rear end locating shaft location, and the front end locating hole that the front end locating shaft passes same grate furnace screening connects, and the skeleton locating hole that passes relevant position on the skeleton positions; The rear end locating hole that the rear end locating shaft passes same grate furnace screening connects, and the skeleton locating hole that passes relevant position on the skeleton connects; Be stagger between the front and rear row fire grate segment.The indoor drying medium of dry wind sprays into along the rubbish direction of motion from the tapering type wind distributing hole on the fire grate segment.
Another kind of technical scheme is: a kind of garbage pre-heating and drying mechanism, constitute by skeleton, dry air compartment and the fire grate segment that is arranged on skeleton top, described fire grate segment is formed by heat-resisting cast iron or heat resisting cast steel casting, the fire grate segment inboard is provided with front end locating hole and rear end locating hole, skeleton) both sides are provided with the skeleton locating hole.This garbage pre-heating and drying mechanism comprises front and back stages, and each level is formed by skeleton, fire grate segment and dry air compartment, is stagger between previous stage and the back one-level; Described fire grate segment is provided with tapering type wind distributing hole; The end of final stage pre-heating and drying mechanism is immersed in the recirculating fluidized bed emulsion zone, adopts refractory material to build by laying bricks or stones; Every grate furnace screening on every grade of drying device is by front end locating shaft and rear end locating shaft location, and the front end locating hole that the front end locating shaft passes same grate furnace screening connects, and the skeleton locating hole that passes relevant position on the skeleton positions; The rear end locating hole that the rear end locating shaft passes same grate furnace screening connects, and the skeleton locating hole that passes relevant position on the skeleton connects; Be stagger between the front and rear row fire grate segment.The indoor drying medium of dry wind sprays into along the rubbish direction of motion from the tapering type wind distributing hole on the fire grate segment.
The present invention compared with prior art has the following advantages and beneficial effect: the present invention has made full use of the slow reaction process of fire grate, have be skillfully constructed, implement easily, advantage such as reliable operation; The present invention is combined by many grate furnaces screening staged, has both strengthened drying effect, has prevented the structural deterioration that thermal expansion causes drying device again; The staged setting of two-stage pre-heating and drying mechanism can make rubbish fall in dry run, produces to become flexible, and further strengthens the drying effect of rubbish inside.
Description of drawings
Fig. 1 is the garbage pre-heating and drying mechanism schematic diagram that one-level involved in the present invention is arranged.
Fig. 2 is that the garbage pre-heating and drying mechanism of two stage arrangement involved in the present invention is arranged schematic diagram.
Fig. 3 overlooks the layout schematic diagram for garbage pre-heating and drying mechanism involved in the present invention.
Fig. 4 is a garbage pre-heating and drying mechanism fire-grating chip architecture schematic diagram involved in the present invention.
Fig. 5 is a garbage pre-heating and drying mechanism skeleton schematic diagram involved in the present invention.
Among the figure: the 1-skeleton; The 2-fire grate segment; 3-front end locating hole; 4-rear end locating hole; The 5-wind distributing hole; The dry air compartment of 6-higher level; The 7-wind-distributing pipe; The dry air compartment of 8-subordinate; 9-recirculating fluidized bed emulsion zone; 10-front end locating shaft; 11-rear end locating shaft; 12-skeleton locating hole.
The specific embodiment
Describe concrete structure of the present invention, operation principle and embodiment in detail below in conjunction with accompanying drawing:
Fig. 1 is the garbage pre-heating and drying mechanism schematic diagram that one-level involved in the present invention is arranged.As shown in Figure 1, the present invention is made of the dry air compartment 6 of skeleton 1, fire grate segment 2 and higher level.Described fire grate segment 2 is formed by heat-resisting cast iron or heat resisting cast steel casting, be arranged on skeleton 1 top (as shown in Figure 3), skeleton 1 is as brace summer, constitute the supporting construction of pre-heating and drying mechanism, skeleton locating hole 12 is laid in skeleton 1 both sides simultaneously, the quantity of skeleton locating hole 12 and position cooperate with the fire grate segment locating hole according to the quantity of fire grate segment locating hole and position and decide, and fire grate segment is played the role of positioning (as shown in Figure 5).Each fire grate segment inboard is equipped with front end locating hole 3 and rear end locating hole 4, and is equipped with tapering type wind distributing hole 5 (as shown in Figure 4) on each fire grate segment.Drying device is divided into the dry air compartment 6 of higher level, adopts high-head wind or high-temperature flue gas as drying medium.Drying medium in the dry air compartment 6 of higher level sprays into along the rubbish direction of motion from the tapering type wind distributing hole 5 on the fire grate segment, and the rubbish on the drying device is carried out preheating and drying.
According to the length dimension of drying device along the rubbish direction of motion, fire grate segment is more than 2 rows, along rubbish direction of motion Boulez, is stagger between the front and rear row fire grate segment; According to vertical depth dimensions of drying device, every grate furnace row all has 2 above fire grate segments simultaneously.Such set-up mode can reduce the rigid design of drying device and increases its flexible design, thereby increases the service life of drying device; Simultaneously also can make drying garbage more even.
Every grate furnace screening is by same front end locating shaft 10 and same rear end locating shaft 11 location, and the front end locating hole 3 that front end locating shaft 10 passes same grate furnace screening connects, and the skeleton locating hole 12 that passes relevant position on the skeleton positions; The rear end locating hole 4 that rear end locating shaft 11 passes same grate furnace screening connects, and the skeleton locating hole 12 that passes relevant position on the skeleton positions.The second half section of drying device is immersed in the recirculating fluidized bed emulsion zone 9, in order to prevent high temperature corrode in the emulsion zone, prevent the wearing and tearing of high concentration material simultaneously to drying device, the end of pre-heating and drying mechanism adopts Fire and abrasion resistant material to build by laying bricks or stones, rubbish is more smooth and easy, emulsion zone burning is gone in landing more equably in order to make, and this section is tilted to down sloping shape to build by laying bricks or stones along drying device to the direction of emulsion zone.
Fig. 2 is the garbage pre-heating and drying mechanism schematic diagram of the two stage arrangement that the present invention relates to, when the quantity of refuse of required preheating and drying bigger, and when the garbage feeding stroke is longer, pre-heating and drying mechanism adopts front and back stages to arrange, higher level's pre-heating and drying mechanism is made up of the dry air compartment 6 of skeleton 1, fire grate segment 2 and higher level; Subordinate's pre-heating and drying mechanism is made up of the dry air compartment 8 of skeleton 1, fire grate segment 2 and subordinate.Be stagger between previous stage pre-heating and drying mechanism and the back one-level pre-heating and drying mechanism.Fire grate segment 2 is formed by heat-resisting cast iron or heat resisting cast steel casting, be arranged on skeleton 1 top (as shown in Figure 3), skeleton 1 is as brace summer, constitute the supporting construction of pre-heating and drying mechanism, skeleton locating hole 12 is laid in skeleton 1 both sides simultaneously, the quantity of skeleton locating hole 12 and position cooperate with the fire grate segment locating hole according to the quantity of fire grate segment locating hole and position and decide, and fire grate segment is played the role of positioning (as shown in Figure 5).Each fire grate segment inboard is equipped with front end locating hole 3 and rear end locating hole 4, and is equipped with tapering type wind distributing hole 5 (as shown in Figure 4) on each fire grate segment.Higher level's drying device is divided into the dry air compartment 6 of higher level, in establish wind-distributing pipe 7, feed high-head wind or high-temperature flue gas as drying medium.Subordinate drying device below is provided with the dry air compartment 8 of subordinate.The indoor drying medium of dry wind sprays into along the rubbish direction of motion from the tapering type wind distributing hole 5 on the fire grate segment, and the rubbish on the drying device is carried out preheating and drying.
According to the length dimension of drying device along the rubbish direction of motion, fire grate segment is more than 2 rows, along rubbish direction of motion Boulez, is stagger between the front and rear row fire grate segment; According to vertical depth dimensions of drying device, every grate furnace row all has 2 above fire grate segments simultaneously.Such set-up mode can reduce the rigid design of drying device and increases its flexible design, thereby increases the service life of drying device; Simultaneously also can make drying garbage more even.
Every grate furnace screening of every grade of drying device is by same front end locating shaft 10 and same rear end locating shaft 11 location, the front end locating hole 3 that front end locating shaft 10 passes same grate furnace screening connects, and the skeleton locating hole 12 that passes relevant position on the skeleton positions; The rear end locating hole 4 that rear end locating shaft 11 passes same grate furnace screening connects, and the skeleton locating hole 12 that passes relevant position on the skeleton positions.The second half section of drying device is immersed in the recirculating fluidized bed emulsion zone 9, in order to prevent that high concentration material is to the wearing and tearing of drying device in the emulsion zone, the end of drying device adopts Fire and abrasion resistant material to build by laying bricks or stones, rubbish is more smooth and easy, emulsion zone burning is gone in landing more equably in order to make, and this section is tilted to down sloping shape to build by laying bricks or stones along drying device to the direction of emulsion zone.
Claims (4)
1. garbage pre-heating and drying mechanism, constitute by skeleton (1), dry air compartment and the fire grate segment (2) that is arranged on skeleton (1) top, described fire grate segment is formed by heat-resisting cast iron or heat resisting cast steel casting, the fire grate segment inboard is provided with front end locating hole (3) and rear end locating hole (4), skeleton (1) both sides are provided with skeleton locating hole (12), it is characterized in that: described fire grate segment is provided with tapering type wind distributing hole (5); The end of drying device is immersed in the recirculating fluidized bed emulsion zone (9), adopts refractory material to build by laying bricks or stones; Every grate furnace screening is by same front end locating shaft (10) and same rear end locating shaft (11) location, the front end locating hole (3) that front end locating shaft (10) passes same grate furnace screening connects, and passes skeleton (1) and go up the skeleton locating hole (12) of relevant position and position; The rear end locating hole (4) that rear end locating shaft (11) passes same grate furnace screening connects, and passes skeleton (1) and go up the skeleton locating hole (12) of relevant position and connect; Be stagger between the front and rear row fire grate segment.
2. garbage pre-heating and drying mechanism according to claim 1 is characterized in that: the indoor drying medium of dry wind sprays into along the rubbish direction of motion from the tapering type wind distributing hole (5) on the fire grate segment.
3. garbage pre-heating and drying mechanism, constitute by skeleton (1), dry air compartment and the fire grate segment (2) that is arranged on skeleton (1) top, described fire grate segment is formed by heat-resisting cast iron or heat resisting cast steel casting, the fire grate segment inboard is provided with front end locating hole (3) and rear end locating hole (4), skeleton (1) both sides are provided with skeleton locating hole (12), it is characterized in that: described pre-heating and drying mechanism comprises front and back stages, each level is formed by skeleton (1), fire grate segment (2) and dry air compartment, is stagger between previous stage and the back one-level; Described fire grate segment is provided with tapering type wind distributing hole (5); The end of final stage pre-heating and drying mechanism is immersed in the recirculating fluidized bed emulsion zone (9), adopts refractory material to build by laying bricks or stones; Every grate furnace screening on every grade of drying device is by front end locating shaft (10) and rear end locating shaft (11) location, the front end locating hole (3) that front end locating shaft (10) passes same grate furnace screening connects, and passes skeleton (1) and go up the skeleton locating hole (12) of relevant position and position; The rear end locating hole (4) that rear end locating shaft (11) passes same grate furnace screening connects, and passes skeleton (1) and go up the skeleton locating hole (12) of relevant position and connect; Be stagger between the front and rear row fire grate segment.
4. garbage pre-heating and drying mechanism according to claim 3 is characterized in that: the indoor drying medium of dry wind sprays into along the rubbish direction of motion from the tapering type wind distributing hole (5) on the fire grate segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102242527A CN101382289B (en) | 2008-10-15 | 2008-10-15 | Garbage prewarming and drying arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102242527A CN101382289B (en) | 2008-10-15 | 2008-10-15 | Garbage prewarming and drying arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101382289A CN101382289A (en) | 2009-03-11 |
| CN101382289B true CN101382289B (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102242527A Expired - Fee Related CN101382289B (en) | 2008-10-15 | 2008-10-15 | Garbage prewarming and drying arrangement |
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| CN (1) | CN101382289B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398382A (en) * | 2013-07-31 | 2013-11-20 | 华南理工大学 | Waste microwave pretreatment method and pretreatment device thereof |
| CN106122978B (en) * | 2016-06-30 | 2019-01-08 | 安徽未名鼎和环保有限公司 | A kind of preheating type Disposal System of Mud Burning |
| CN106813238A (en) * | 2017-01-17 | 2017-06-09 | 北京热华能源科技有限公司 | A kind of predrying charging gear and boiler for multipath circulating fluidized bed boiler |
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- 2008-10-15 CN CN2008102242527A patent/CN101382289B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101382289A (en) | 2009-03-11 |
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Denomination of invention: Garbage prewarming and drying arrangement Effective date of registration: 20111116 Granted publication date: 20100811 Pledgee: Zhongguancun Beijing science and technology Company limited by guarantee Pledgor: Beijing Nowva Energy Technology Co., Ltd. Registration number: 2011990000437 |
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Date of cancellation: 20130524 Granted publication date: 20100811 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Nowva Energy Technology Co., Ltd. Registration number: 2011990000437 |
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Denomination of invention: Garbage prewarming and drying arrangement Effective date of registration: 20130524 Granted publication date: 20100811 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Nowva Energy Technology Co., Ltd. Registration number: 2013990000318 |
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