CN201272730Y - Sludge drying and incinerating system - Google Patents
Sludge drying and incinerating system Download PDFInfo
- Publication number
- CN201272730Y CN201272730Y CNU200820109072XU CN200820109072U CN201272730Y CN 201272730 Y CN201272730 Y CN 201272730Y CN U200820109072X U CNU200820109072X U CN U200820109072XU CN 200820109072 U CN200820109072 U CN 200820109072U CN 201272730 Y CN201272730 Y CN 201272730Y
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- sludge
- sludge drying
- incineration
- acceptance division
- drying device
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Abstract
The utility model relates to a sludge drying and firing system, which comprises a sludge drying device, a sludge firing device and a flue gas afterheat utilizing device, wherein the sludge drying device is equipped with a sludge receiving portion and a discharge portion, the sludge firing device is equipped with a dried sludge receiving portion, a bottom slag discharge portion, a fly ash discharge portion and a smoke discharge portion, and the smoke afterheat utilizing device is equipped with a smoke receiving portion and a smoke discharge portion. The discharge portion of the sludge drying device is connected with the dried sludge receiving portion of the sludge firing device, and the smoke discharge portion of the sludge firing device is connected with the smoke receiving portion of the smoke afterheat utilizing device. The sludge drying device is further equipped with a bottom slag receiving portion and a fly ash receiving portion, the sludge firing device is further equipped with a returned fly ash receiving portion, wherein the bottom slag receiving portion of the sludge drying device is connected with the bottom slag discharge portion of the sludge firing device, the fly ash receiving portion of the sludge drying device is connected with the fly ash discharge portion of the sludge firing device, and the sludge drying device is further connected with the smoke discharge portion of the smoke afterheat utilizing device. In the system, afterheat can be sufficiently recycled and reused.
Description
Technical field
The utility model relates to a kind of sludge drying and incineration system, more particularly, relates to a kind of sludge drying and incineration system of abundant cyclic utilization system waste heat.
Background technology
Mud is the higher cotton-shaped mud pellet of a kind of water ratio, wherein contains a large amount of organism, heavy metal and germ and pathogenic bacteria etc., if deal with improperly, can cause serious pollution to environment.Sludge treatment technology commonly used comprises landfill, compost, burning etc.Burning method can significantly reduce the volume of mud, has the advantage that processing speed is fast, innoxious, the minimizing degree is high, and burning process can also solve the stench problem of mud, and the heat that produces in the burning process can carry out recycling.But because primary moisture percentage in sewage sludge height, calorific value are low, therefore it being carried out burning after drying or the mummification again is solution preferably.
The water ratio of sewage work's dewatered sludge is about 80%, and mud self calorific value of this moment can not must carry out drying treatment with the moisture evaporation of himself.After mud carry out half-driedization, if continue dryly, power consumption will increase, and prolong time of drying.Therefore generally mud being carried out half-driedization (40-50% moisture) is optimal path.
Conventional half-driedization of mud institute heat requirement is provided by the steam that sludge incineration produces, and the lime-ash employing slag cooler that produces after the sludge incineration is lowered the temperature and cooled off the back discharging.
China utility model patent CN200986194Y discloses a kind of sludge desiccation burning integral treatment unit, wherein mud is transported in the rotary type sludge desiccation apparatus, come the moisture in the heating evaporation mud in the fluidized bed combustion device generation in the part introducing rotary type sludge desiccation apparatus of warm flue gas, in another part of warm flue gas be transported in the air preheater, the primary and secondary air of fluidized bed combustion device is heated.Part lime-ash that fluidized bed combustion device is discharged and bed material are transported in the rotary type sludge desiccation apparatus, carry out blending with mud in the rotary type sludge desiccation apparatus.Warm flue gas heated air and mud during this method adopted, and had therefore reduced the energy output of system, caused system efficiency and economic benefit to reduce.
The utility model content
The purpose of this utility model provides a kind of sludge drying and incineration system, and wherein system's waste heat can be by abundant recycle.
Comprise according to sludge drying of the present utility model and incineration system: the sludge drying device is provided with mud acceptance division and discharge portion; Sludge incineration device is provided with dewatered sludge acceptance division, end slag discharge portion, fly ash emission portion and fume emission portion; With the fume afterheat use device, be provided with flue gas acceptance division and fume emission portion.The discharge portion of sludge drying device links to each other with the dewatered sludge acceptance division of sludge incineration device, and the fume emission portion of sludge incineration device links to each other with the flue gas acceptance division of fume afterheat use device.The sludge drying device also is provided with end slag acceptance division and flying dust acceptance division, sludge incineration device also is provided with returns the flying dust acceptance division, wherein the end slag acceptance division of sludge drying device links to each other with the end slag discharge portion of sludge incineration device, the flying dust acceptance division of sludge drying device links to each other with the fly ash emission portion of sludge incineration device, and the sludge drying device also links to each other with the fume emission portion of fume afterheat use device.
The sludge drying device can also be provided with heat transfer tube, and the fume afterheat use device is preferably the waste heat boiler that is provided with discharge of steam portion, and wherein the heat transfer tube of sludge drying device links to each other with the discharge of steam portion of waste heat boiler.
Can also comprise the collecting and distributing portion of flying dust according to sludge drying of the present utility model and incineration system, the flying dust acceptance division of sludge drying device links to each other with the fly ash emission portion of sludge incineration device by collecting and distributing of flying dust, and collecting and distributing of flying dust also links to each other with the flying dust acceptance division that returns of sludge incineration device.
The sludge drying device can adopt the bubbling fluidization bed structure.
The sludge drying device can also adopt rotary kiln or roller frame.
Sludge incineration device can adopt the circulating fluidized bed incinerator structure.
Can also comprise fly-ash separator according to sludge drying of the present utility model and incineration system, link to each other, thereby and/or link to each other with the sludge drying device and can directly receive the flue gas that the sludge drying device is discharged with the fume emission portion of sludge incineration device.
Can also comprise smoke eliminator according to sludge drying of the present utility model and incineration system, link to each other with fly-ash separator.
According to the utility model, sludge incineration device is directly sent in the dewatered sludge after for example the end slag of circulating fluidized bed incinerator burning back generation is collected, the flying dust major part that produces after the sludge incineration is returned incinerator, and a part can directly be sent in the dewatered sludge in addition; Simultaneously will be as yet do not introduce mixture by flying dust and mud to make full use of its waste heat through the flue gas of fly-ash separator.The end slag temperature of discharging incinerator is very high, it is sent into wet mud come together to send into incinerator with mud again behind the sludge-drying.After end slag enters incinerator, help strengthening the heat storage capacity of emulsion zone.
Because the ash content of mud is more, returns the circulation ratio that the stove amount can change circulating fluidized bed incinerator of going into of flying dust by adjusting, thereby reach the partial action of regulating thermal load in the stove.It is a lot of to return in the flying dust heat in addition, can carry out drying to mud on the one hand, and the moisture in the mud can also absorb the dust in the flue gas on the other hand.The abundant recycle of above-mentioned waste heat helps to be used in the reduction system steam and the flue gas heat consumption of sludge-drying, thereby improves the energy utilization efficiency of system, improves system economy.
Description of drawings
Fig. 1 is the rough schematic view of sludge drying of the present utility model and incineration system.
Embodiment
Referring to Fig. 1, comprise according to sludge drying of the present utility model and incineration system: sludge drying device 1, for example can adopt the bubbling fluidization bed structure, adopt rotary kiln or roller frame, be provided with mud acceptance division and discharge portion (not specifically illustrating); Sludge incineration device 2 for example can adopt the circulating fluidized bed incinerator structure, is provided with dewatered sludge acceptance division, end slag discharge portion, fly ash emission portion and fume emission portion (not specifically illustrating); With fume afterheat use device 3, be provided with flue gas acceptance division and fume emission portion (not specifically illustrating).The discharge portion of sludge drying device 1 links to each other with the dewatered sludge acceptance division of sludge incineration device 2, and the fume emission portion of sludge incineration device 2 links to each other with the flue gas acceptance division of fume afterheat use device 3.Sludge drying device 1 also is provided with end slag acceptance division and flying dust acceptance division (not specifically illustrating), sludge incineration device 2 also is provided with returns flying dust acceptance division (not specifically illustrating), wherein the end slag acceptance division of sludge drying device 1 links to each other with the end slag discharge portion of sludge incineration device 2, the flying dust acceptance division of sludge drying device 1 links to each other with the fly ash emission portion of sludge incineration device 2, and sludge drying device 1 also links to each other with the fume emission portion of fume afterheat use device 3.
In addition, sludge drying device 1 can also be provided with heat transfer tube (not specifically illustrating), fume afterheat use device 3 can be for being provided with the waste heat boiler of discharge of steam portion (not specifically illustrating), and wherein the heat transfer tube of sludge drying device 1 links to each other with the discharge of steam portion of waste heat boiler.
Can also comprise collecting and distributing 4 of flying dust according to sludge drying of the present utility model and incineration system, the flying dust acceptance division of sludge drying device 1 links to each other with the fly ash emission portion of sludge incineration device 2 by collecting and distributing 4 of flying dust, and collecting and distributing 4 of flying dust also links to each other with the flying dust acceptance division that returns of sludge incineration device 2.
Can also comprise fly-ash separator 5 according to sludge drying of the present utility model and incineration system, link to each other, thereby and/or link to each other with sludge drying device 1 and can directly receive the flue gas that sludge drying device 1 is discharged with the fume emission portion of sludge incineration device 2.
Can also comprise smoke eliminator 6 according to sludge drying of the present utility model and incineration system, link to each other with fly-ash separator 5.At last, smoke eliminator 6 can link to each other with the flue gas behind the emission purification with chimney 7.
Technical process according to sludge drying of the present utility model and incineration system is as follows:
Dewatered sludge enters sludge drying device 1, sending into sludge incineration device 2 (for example circulating fluidized bed incinerator) after half-driedization burns, the flying dust that separates from the circulating fluidized bed separator is admitted to flying dust collecting and distributing 4, a part of flying dust in collecting and distributing 4 of the flying dust is returned the burner hearth of sludge incineration device 2 by the flying dust acceptance division that returns of sludge incineration device 2 by foldback, and another part is then directly sent into the half-dried makeup of mud and put 1.End slag after the sludge incineration is directly sent into the half-dried makeup of mud and is put 1 without cooling.The flue gas that incinerator produces is then sent into fume afterheat use device (waste heat boiler) 3, and the steam part that waste heat boiler produces can be used for heat supply or generating, and another part can be used as the auxiliary energy of sludge drying.The flue gas that comes out from waste heat boiler be admitted to the half-dried makeup of mud put 1 lower the temperature and rough dusting after, can directly send into fly-ash separator 5 and carry out dedusting, after flue gas is handled through smoke eliminator 6 then, send into chimney 7 and discharge.
The simple part steam that adopts waste heat boiler to produce is sent into half-dried makeup and is put mud is carried out drying and other treatment in the conventional sludge anhydration burning technology.The end slag temperature of incinerator is 700-800 ℃, and returning charge flying dust temperature is 800-900 ℃, because ash content is more in the mud, cause the ash amount of cyclonic separator and material returning device very big, cause wearing and tearing easily, too much thin ash directly enters burner hearth simultaneously, has aggravated the wearing and tearing in the burner hearth.In addition, entering the preceding flue-gas temperature of sack cleaner is about 200 ℃, and these heats are wasted.After adopting system of the present utility model, can improve the utilization rate of waste heat of system, reduce the consumption of the required steam of dewatered sludge greatly, improve the steam heating or the power generation capacity of system, strengthen the economic benefit of system.
Embodiment 1: the sludge drying device adopts fluidized bed dryer
Half-driedization process is carried out in bubbling fluidized bed, flue gas enters bed through blast cap at the bottom of bed, mud, end slag is sent into from different material inlets with flying dust, hot flue gas makes the mud in the lathe bed be in fluidization on the one hand, prevent the mud bonding, also carry out abundant heat exchange on the other hand with mud, evaporation moisture wherein, after mixing, moisture that is evaporated and flue gas also help reducing the dust content in the flue gas, reduce for example load of sack cleaner, adopt this system to help also to prevent that the foul smell in the drying process is excessive simultaneously, reduce and pollute, foul smell and flue gas enter the tail flue gas treatment system together, after treatment discharging.When end slag and fume afterheat were not enough to provide the needed heat of half-driedization of mud, the steam that waste heat boiler can be come carried out drying to mud after through the pipe laying that is provided with in the fluidized-bed.
Embodiment 2: the sludge drying device adopts rotary kiln or roller frame
End slag, flying dust and mud are entered from the top of rotary kiln or cylinder together, and the three slowly mixes in rotary kiln or cylinder, carries out abundant thermal exchange, and mud is carried out half-driedization processing.Simultaneously above-mentioned flue gas is fed from rotary kiln or cylinder bottom, flue gas adverse current and on, compile from rotary kiln or cylinder top exit, then enter for example sack cleaner, can effectively utilize waste heat like this, thereby improve the energy utilization efficiency of system greatly.In rotary kiln or the cylinder heat transfer tube is set, its layout quantity is decided according to practical situation, when end slag and fume afterheat were not enough to provide the needed heat of half-driedization of mud, the steam that waste heat boiler can be come carry out drying through the heat transfer tube that is provided with in rotary kiln or the cylinder to mud.
It will be appreciated by those skilled in the art that the foregoing description or accompanying drawing only play the explanation the purpose of this utility model, and should not regard any restriction that it is made as.
Claims (8)
1. sludge drying and incineration system comprise:
The sludge drying device is provided with mud acceptance division and discharge portion;
Sludge incineration device is provided with dewatered sludge acceptance division, end slag discharge portion, fly ash emission portion and fume emission portion; With
The fume afterheat use device is provided with flue gas acceptance division and fume emission portion,
The discharge portion of wherein said sludge drying device links to each other with the dewatered sludge acceptance division of described sludge incineration device, and the fume emission portion of described sludge incineration device links to each other with the flue gas acceptance division of described fume afterheat use device,
It is characterized in that:
Described sludge drying device also is provided with end slag acceptance division and flying dust acceptance division, described sludge incineration device also is provided with returns the flying dust acceptance division, the end slag acceptance division of wherein said sludge drying device links to each other with the end slag discharge portion of described sludge incineration device, the flying dust acceptance division of described sludge drying device links to each other with the fly ash emission portion of described sludge incineration device, and described sludge drying device also links to each other with the fume emission portion of described fume afterheat use device.
2. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Described sludge drying device also is provided with heat transfer tube, and described fume afterheat use device is the waste heat boiler that is provided with discharge of steam portion, and the described heat transfer tube of wherein said sludge drying device links to each other with the discharge of steam portion of described waste heat boiler.
3. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Also comprise the collecting and distributing portion of flying dust, the flying dust acceptance division of described sludge drying device links to each other with the fly ash emission portion of described sludge incineration device by collecting and distributing of flying dust, and collecting and distributing of described flying dust also links to each other with the flying dust acceptance division that returns of described sludge incineration device.
4. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Described sludge drying device adopts the bubbling fluidization bed structure.
5. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Described sludge drying device adopts rotary kiln or roller frame.
6. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Described sludge incineration device adopts the circulating fluidized bed incinerator structure.
7. according to the sludge drying and the incineration system of claim 1, it is characterized in that:
Also comprise fly-ash separator, link to each other, thereby and/or link to each other with described sludge drying device and can directly receive the flue gas that described sludge drying device is discharged with the fume emission portion of described sludge incineration device.
8. according to the sludge drying and the incineration system of claim 7, it is characterized in that:
Also comprise smoke eliminator, link to each other with described fly-ash separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109072XU CN201272730Y (en) | 2008-07-07 | 2008-07-07 | Sludge drying and incinerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109072XU CN201272730Y (en) | 2008-07-07 | 2008-07-07 | Sludge drying and incinerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201272730Y true CN201272730Y (en) | 2009-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820109072XU Expired - Lifetime CN201272730Y (en) | 2008-07-07 | 2008-07-07 | Sludge drying and incinerating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201272730Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813316A (en) * | 2010-04-19 | 2010-08-25 | 山东天力干燥设备有限公司 | Municipal sludge drying and incineration system and treatment process thereof |
| CN101881457A (en) * | 2010-07-12 | 2010-11-10 | 北京中科通用能源环保有限责任公司 | Self-balanced sludge incineration method and system |
| CN102633420A (en) * | 2012-05-09 | 2012-08-15 | 江苏中容环保有限公司 | Sludge pyrolysis device with functions of porous medium heat accumulating, material equalizing, pre-heating and drying |
| CN102690035A (en) * | 2012-06-13 | 2012-09-26 | 山东天力干燥股份有限公司 | System and process for drying sludge using pulse combustion internal heating fluid bed |
| CN103253833A (en) * | 2013-06-03 | 2013-08-21 | 江苏金山环保工程集团有限公司 | Comprehensive treatment method for sludge or waste liquid |
| CN105439404A (en) * | 2015-12-31 | 2016-03-30 | 无锡国联环保科技股份有限公司 | Sludge dewatering, drying and incinerating system and method |
| CN105864800A (en) * | 2016-05-04 | 2016-08-17 | 宁波华德瑞环保科技有限公司 | Sludge drying and incinerating technology |
| CN108687106A (en) * | 2018-05-02 | 2018-10-23 | 中国恩菲工程技术有限公司 | The cooperative processing method of flying dust and sludge |
-
2008
- 2008-07-07 CN CNU200820109072XU patent/CN201272730Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813316A (en) * | 2010-04-19 | 2010-08-25 | 山东天力干燥设备有限公司 | Municipal sludge drying and incineration system and treatment process thereof |
| CN101881457A (en) * | 2010-07-12 | 2010-11-10 | 北京中科通用能源环保有限责任公司 | Self-balanced sludge incineration method and system |
| CN102633420A (en) * | 2012-05-09 | 2012-08-15 | 江苏中容环保有限公司 | Sludge pyrolysis device with functions of porous medium heat accumulating, material equalizing, pre-heating and drying |
| CN102690035A (en) * | 2012-06-13 | 2012-09-26 | 山东天力干燥股份有限公司 | System and process for drying sludge using pulse combustion internal heating fluid bed |
| CN103253833A (en) * | 2013-06-03 | 2013-08-21 | 江苏金山环保工程集团有限公司 | Comprehensive treatment method for sludge or waste liquid |
| CN105439404A (en) * | 2015-12-31 | 2016-03-30 | 无锡国联环保科技股份有限公司 | Sludge dewatering, drying and incinerating system and method |
| CN105864800A (en) * | 2016-05-04 | 2016-08-17 | 宁波华德瑞环保科技有限公司 | Sludge drying and incinerating technology |
| CN105864800B (en) * | 2016-05-04 | 2018-04-17 | 宁波华德瑞环保科技有限公司 | A kind of sludge anhydration burning technique |
| CN108687106A (en) * | 2018-05-02 | 2018-10-23 | 中国恩菲工程技术有限公司 | The cooperative processing method of flying dust and sludge |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |
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| CX01 | Expiry of patent term |