CN101117261A - Sludge drying burning treatment method and integrated apparatus - Google Patents
Sludge drying burning treatment method and integrated apparatus Download PDFInfo
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- CN101117261A CN101117261A CNA2007100700600A CN200710070060A CN101117261A CN 101117261 A CN101117261 A CN 101117261A CN A2007100700600 A CNA2007100700600 A CN A2007100700600A CN 200710070060 A CN200710070060 A CN 200710070060A CN 101117261 A CN101117261 A CN 101117261A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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Abstract
The invention relates to a disposal method and integrated gear of anhydration and incineration of sewage sludge. The technical problems that the invention has solved are that the anhydration of incineration of sewage sludge are integrated, the heat utilization of incineration and the comprehensive processing effect are good. The methods of the invention are that: 1) pretreatment of wet sewage sludge; 2) access to a spray head on the top of a spray drying tower (8) of the sewage sludge for spray drying after which drying particles are obtained; exhaustion of offgases from an offgas outlet at the bottom of a tower drier (8); 3) access of the drying particles to a rotary burning kiln (10) for incineration, with the high temperature gases needed by the startup and operation of the rotary burning kiln (10) supplied by a hot-blast stove; exhaustion of the slag particles from a slag outlet; 4) access of the high temperature gases from the rotary burning kiln (10) to a second combustion chamber (9) for sufficient combustion; delivery of the high temperature gases after combustion to the spray drying tower (8).
Description
Technical field
The present invention relates to technical field of sludge treatment, specifically is a kind of sludge drying, incineration treatment method and integrating device.Also go for mud.
Background technology
The sludge treatment technology is the key subjects in environmental protection field, and the technical scheme of solution respectively has relative merits.Chinese patent literature CN1931752A discloses " a kind of wet mud burning treatment apparatus that has particle drier ", and this device also has mud to break up device and particle drier except circulating fluidized bed incinerator etc.Its will wet drying and incineration of mud concentrates in the device and carries out.The wet contained large quantity of moisture of mud is drawn with the particle drier fluidizing agent, or recycles or send into the burner hearth burning as the particle drier fluidizing agent, to reduce the calorific loss of system, has not discharged gas with foreign flavor.But particle drier wherein has several deficiencies, the one, wet mud and high hot-fluid oxidizing gases direction of motion contrary, both duration of contact are too short, and only still excessive through the wet mud agglomerate of breaing up, too small with high hot-fluid oxidizing gases contact gear ratio area, these have all influenced the mummification effect of mud; The 2nd, employed fluidizing agent is a rare gas element, has improved the complexity and the running cost of equipment.Chinese patent literature CN1214323A discloses a kind of " sludge treating process ", descends together in the high-temperature flue gas that produces when promptly with spray-dired method the mud slurry being sprayed into waste incineration, makes moisture evaporation, and mud is then separated out with solid particulate form.The deficiency of this technology is to match with waste incineration, has limited and has promoted the use of.
Summary of the invention
The technical issues that need to address of the present invention are, provide a kind of and integrate sludge drying and burn, and sludge drying is effective, burn good sludge drying, the incineration treatment method of Btu utilization.
Another technical problem that the present invention need solve is, a kind of sludge drying that can independently build operation is provided, burns integrating device, the sludge drying of this device, burn effective, the burning Btu utilization is good, incineration tail gas obtains handling, and the slag of burning can be utilized, and comprehensive treatment effect is good.
Sludge drying of the present invention, incinerating method is characterized in that
1) wet mud pre-treatment;
2) spraying drying: enter the shower nozzle of spraying drying cat head together through pretreated wet mud and pressurized air, contact with cat head high-temperature gas and stream, carry out spraying drying and get the mummification particle with the droplet form; Tail gas is discharged pending from the tail gas outlet of drying tower bottom;
3) the mummification particle burns: the mummification particle advances the rotary type incinerating kiln and burns, and gets slag particle and discharges from slag-drip opening; The rotary type incinerating kiln starts and moves required high-temperature gas and supplied with by hotblast stove;
4) high-temperature gas reuse:, enter dual firing chamber and fully burn and pass to the spraying drying cat head and use for dry from the high-temperature gas of rotary type incinerating kiln.
Above-mentioned steps 1), with sludge crushing, making beating, change the mud granule structure with mechanical crushing equipment, the big particle diameter granule in the mud is broken, and the moisture existence form in the mud is changed, and has improved the flowability of mud; Help carrying and atomizing through this step, also help and improve mud specific surface area and heat absorption drying effect.
Wet mud pre-treatment can be adopted prior art, as preferably, is by mechanical disintegration, the increase flowability of sizing mixing, and sieves, and removes 10 orders and above granule and impurity.
Above-mentioned steps 2), treated mud under high pressure is delivered to nozzle, state with spraying enters spray-dryer top (fogdrop diameter 30～500 μ m), contact with largest specific surface area and stream with the high-temperature gas that hotblast stove comes, mud drip because of wherein moisture dry at a high speed by rapid evaporation in the decline process, and obtaining the mummification particle through gas solid separation, its water ratio is generally 15～30% (water ratio can be controlled by regulating).
Above-mentioned steps 3), because mummification particle water content reduces greatly, particle itself also contains many organic matters and objectionable impurities, suitable calorific value is arranged, be very suitable in the rotary type incinerating kiln, burning, and obtain harmless substantially slag particle, for recycling (as brickmaking etc.); The high-temperature gas of this stage hotblast stove is supplied with and can be reduced or stop.
Produce in order to suppress toxic gas such as Dioxins, as preferably, high-temperature gas is in residence time 〉=2.5 of dual firing chamber second, temperature 〉=850 ℃.
Above-mentioned steps 4), from the high-temperature gas that the rotary type incinerating kiln comes out, also contains obnoxious flavour, enter dual firing chamber and fully burn and objectionable constituent burn off once more can also be able to be obtained the higher high-temperature gas of temperature and uses for spray-drying tower; Formed the high-temperature gas convection drying mud that burning sludge produced, dry this circulation of the easier burning of mud, thus effectively reduce the cost of mud comprehensive treating process.
Sludge drying of the present invention, burning integrating device is characterized in that the spraying drying top of tower has shower nozzle and high-temperature gas import, and the tail gas outlet is arranged at the tower bottom, and discharge port is arranged at the bottom of the tower; Discharge port is connected with rotary type incinerating kiln opening for feed, and rotary type incinerating kiln air outlet is connected with the dual firing chamber blast inlet, and dual firing chamber's air outlet is risen the import of wet body by pipeline and rotary type incinerating kiln and is connected; The hotblast stove air outlet is connected with rotary type incinerating kiln blast inlet.
As preferably, hollander, sieve apparatus, storage mud jar, high-pressure pump, the shower nozzle of spraying drying cat head connects successively.
Shower nozzle can be the pressure type shower nozzle, and as preferably, shower nozzle is that the air-flowing type shower nozzle is connected with air compressor machine, to improve the time limit of service of spray effect and shower nozzle.
As preferably, the outlet of the tail gas of spray-drying tower, with fly-ash separator, blower fan, exhaust gas processing device, the dehumidifying tower, chimney connects successively.
Inventive method integrates sludge drying and burns, and is comprehensive and good to the treatment effect of mud; Integrating device connects rationally, the device structure maturation of employing, and it is good to burn Btu utilization, has operating safety, heat utilization ratio than characteristics such as height.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment.See Fig. 1, this routine sludge drying, burning integrating device, a day processing mud ability can reach 50 tons, and it is connected to form by four funtion parts.
I-mud preprocessing part: hollander 2, sieve apparatus 3, transferpump 4, storage mud jar 6 (capacity 5m
3) connect successively, (pressure is 1.5Mpa～2.4MPa) be connected with spray-drying tower 8 air-flowing type shower nozzles through high-pressure pump 7.
II-mummification, burning part: be the spray-drying tower 8 of high 40m, diameter 3.5m, cat head partly has air-flowing type shower nozzle/air compressor machine 5, high-temperature gas import, and the tail gas outlet is arranged at the tower bottom, and discharge port is arranged at the bottom of the tower; The drying tower shower nozzle is connected with high-pressure pump 7 and air compressor machine 5; The drying tower discharge port is connected with rotary type incinerating kiln 10 opening for feeds.Rotary type incinerating kiln 10 has slag-drip opening, and its air outlet is connected with dual firing chamber 9 blast inlets, and dual firing chamber's 9 air outlets are risen the import of wet body by pipeline and rotary type incinerating kiln 10 and are connected.Hotblast stove 13 air outlets are connected with rotary type incinerating kiln 10 blast inlets.
III-vent gas treatment part: the tail gas outlet and the fly-ash separator 14 of spray-drying tower 8, blower fan 20, one-level tail gas tower 151, secondary tail gas tower 152 (all being with recycle pump 17 and grug feeding jar 16 for every grade, dress alkali, deodovization agent etc. in jar), dehumidifying 18, chimney 19 connects successively.
The IV-slag particle is collected part: rotary type incinerating kiln 10 slag-drip openings are connected with slag ladle 12, and there is blower fan 11 centre, and slag particle is conveyed into slag ladle 12.
During operation, this routine sewage sludge solid materials flow is, mud in the sludge sump 1 is sent into hollander 2 through lift, enter sieve apparatus 3 (screen cloth granularity≤10 orders) → transferpump 4 through pulling an oar, sizing mixing and send into storage mud jar 6, after high-pressure pump 7 is depressed into the shower nozzle of spray-drying tower 8, contact with droplet form and cat head high-temperature gas and stream and to carry out spraying drying, particle diameter is that 0.2～2mm, water ratio are that 15～30% mummification particle drops at the bottom of the tower, column bottom temperature is 70～80 ℃ at this moment.These mummification particles enter rotary type incinerating kiln 10 again and burn, and getting particle diameter is the over dry slag particle of 0.1～2mm.Slag particle enters slag ladle 12 and waits to transport outward under the conveying of blower fan 11.
This routine sludge drying, burn in high temperature gas flow be hotblast stove 13 (700～1200 ℃ of temperature) → rotary type incinerating kiln 10 (incineration temperature 〉=850 ℃) → dual firing chamber 9 (temperature 〉=850 ℃) → spray-drying tower 8 high-temperature gas imports (about 400～500 ℃ of inlet temperature).
The tail gas stream of this routine spray-drying tower 8 is, spray-drying tower 8 tail gas (about 70～80 ℃ of temperature) outlet → fly-ash separator 14 (dust clearance 〉=99.9%) → blower fan 20 → one-level tail gas tower 151 → secondary tail gas tower 152 → dehumidifying 18 → chimney 19 → emptying (temperature≤40 ℃) can qualified discharge.If tail gas stream humidity is bigger, the new water that absorbs also can discharge and do otherwise processed in the tail gas tower.
Each one piece apparatus of the present invention all is commercially available prod.
Claims (9)
1. a sludge drying, incinerating method is characterized in that
1) wet mud pre-treatment;
2) spraying drying: enter the shower nozzle that spray-drying tower (8) pushes up together through pretreated wet mud and pressurized air, contact with cat head high-temperature gas and stream, carry out spraying drying and get the mummification particle with the droplet form; Tail gas is discharged pending from the tail gas outlet of drying tower (8) bottom;
3) the mummification particle burns: the mummification particle advances rotary type incinerating kiln (10) and burns, and gets slag particle and discharges from slag-drip opening; Rotary type incinerating kiln (10) starts and moves required high-temperature gas and supplied with by hotblast stove (13);
4) high-temperature gas reuse:, enter the abundant burning of dual firing chamber (9) and pass to spray-drying tower (8) top for dry usefulness from the high-temperature gas of rotary type incinerating kiln (10).
2. sludge drying according to claim 1, incinerating method is characterized in that described wet mud pre-treatment, are by mechanical disintegration, sieve, and remove 10 orders and above granule and impurity.
3. sludge drying according to claim 1 and 2, incinerating method is characterized in that high-temperature gas in residence time 〉=2.5 of dual firing chamber (9) second, temperature 〉=850 ℃.
A sludge drying, burn integrating device, it is characterized in that shower nozzle and high-temperature gas import are arranged at spray-drying tower (8) top, the tower bottom has tail gas to export, and discharge port is arranged at the bottom of the tower; Discharge port is connected with rotary type incinerating kiln (10) opening for feed, and rotary type incinerating kiln (10) air outlet is connected with dual firing chamber (9) blast inlet, and dual firing chamber (9) air outlet is risen the import of wet body by pipeline and spray-drying tower (8) and is connected; Hotblast stove (13) air outlet is connected with rotary type incinerating kiln (10) blast inlet.
5. integrating device according to claim 4 is characterized in that hollander (2), sieve apparatus (3), and storage mud jar (6), high-pressure pump (7), the shower nozzle on spray-drying tower (8) top connects successively.
6. integrating device according to claim 5 is characterized in that the shower nozzle on described spray-drying tower (8) top is that the air-flowing type shower nozzle is connected with air compressor machine (5).
7. integrating device according to claim 4 is characterized in that the tail gas outlet of described spray-drying tower (8), with fly-ash separator (14), blower fan (20), exhaust gas processing device, and dehumidifying tower (18), chimney (19) connects successively.
8. integrating device according to claim 7 is characterized in that described exhaust gas processing device is one-level tail gas tower (15), and secondary tail gas tower (15) connects successively; Each tail gas tower has grug feeding jar (16) and recycle pump (17).
9. according to the described integrating device of one of claim 4 to 8, it is characterized in that described rotary type incinerating kiln (10) slag-drip opening is connected with slag ladle (12), there is blower fan (11) centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100700600A CN100556835C (en) | 2007-07-18 | 2007-07-18 | Sludge drying, incineration treatment method and integrating device |
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| CNB2007100700600A CN100556835C (en) | 2007-07-18 | 2007-07-18 | Sludge drying, incineration treatment method and integrating device |
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| CN101117261A true CN101117261A (en) | 2008-02-06 |
| CN100556835C CN100556835C (en) | 2009-11-04 |
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| CNB2007100700600A Active CN100556835C (en) | 2007-07-18 | 2007-07-18 | Sludge drying, incineration treatment method and integrating device |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781078A (en) * | 2010-03-10 | 2010-07-21 | 天津市美好生活科技有限公司 | System device for directly and effectively spray-drying high-solid-content sludge and method thereof |
| CN101811815A (en) * | 2010-05-10 | 2010-08-25 | 李兴 | Tail gas-heated organic heat carrier equipment dried sludge reutilization method |
| CN102182925A (en) * | 2011-04-06 | 2011-09-14 | 尹军 | Method for improving mobility of excess sludge in pipeline |
| CN101565263B (en) * | 2009-05-21 | 2011-10-19 | 山东天力干燥股份有限公司 | Sludge superheated vapor drying system of two-stage paddle dryer and drying process thereof |
| CN101759337B (en) * | 2010-01-07 | 2011-12-14 | 北京林业大学 | Method for improving dewatering performance of excess sludge by combining biological acidification and Fenton-like oxidation |
| CN102537973A (en) * | 2012-01-16 | 2012-07-04 | 中昌环保集团有限公司 | Novel process for pyrolysis of solid wastes |
| CN102633419A (en) * | 2012-05-07 | 2012-08-15 | 浙江利保环境工程有限公司 | Sludge pyrolysis treatment process by taking waste plastic as supplementary energy |
| CN102701559A (en) * | 2012-05-24 | 2012-10-03 | 天津科技大学 | Method and device for comprehensively treating sludge generated by sewage treatment plant and kitchen waste oil |
| CN102878570A (en) * | 2012-10-10 | 2013-01-16 | 中国石油化工股份有限公司 | Method and equipment for treating chemical sludge by blending and combusting chemical sludge in pulverized coal furnace |
| CN103043879A (en) * | 2012-12-20 | 2013-04-17 | 东南大学 | Equipment and method for drying sludge with flue gas |
| CN103073168A (en) * | 2012-12-20 | 2013-05-01 | 东南大学 | Flue gas-sludge indirect contact drying device and method |
| CN103244957A (en) * | 2012-02-28 | 2013-08-14 | 四川宇阳环境工程有限公司 | Integral treatment method for drying and incinerating sludge |
| CN103508205A (en) * | 2012-06-29 | 2014-01-15 | 上海城投污水处理有限公司 | Dry sludge conveying device |
| CN103982897A (en) * | 2014-03-19 | 2014-08-13 | 上海欣鼎钢结构件有限公司 | Incinerator system |
| CN104312654A (en) * | 2014-10-16 | 2015-01-28 | 无锡华光锅炉股份有限公司 | Fuel sludge preparation device |
| CN104310746A (en) * | 2014-10-29 | 2015-01-28 | 天津市美好生活科技有限公司 | Method for drying and incinerating treatment of dewatered sludge |
| CN104315523A (en) * | 2014-11-07 | 2015-01-28 | 西安建筑科技大学 | Method for drying and burning sludge via cement plant kiln tail system |
| CN107572748A (en) * | 2017-10-20 | 2018-01-12 | 大连大开污水处理有限公司 | A kind of device for separating mud and water |
| CN108793668A (en) * | 2018-06-05 | 2018-11-13 | 湖南恒凯环保科技投资有限公司 | A kind of method that sludge atomization drying burns |
| CN111006220A (en) * | 2019-12-12 | 2020-04-14 | 浙江裕峰环境服务股份有限公司 | Industry is useless admittedly and is burnt system in coordination with mud |
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| CN101565263B (en) * | 2009-05-21 | 2011-10-19 | 山东天力干燥股份有限公司 | Sludge superheated vapor drying system of two-stage paddle dryer and drying process thereof |
| CN101759337B (en) * | 2010-01-07 | 2011-12-14 | 北京林业大学 | Method for improving dewatering performance of excess sludge by combining biological acidification and Fenton-like oxidation |
| CN101781078A (en) * | 2010-03-10 | 2010-07-21 | 天津市美好生活科技有限公司 | System device for directly and effectively spray-drying high-solid-content sludge and method thereof |
| CN101811815A (en) * | 2010-05-10 | 2010-08-25 | 李兴 | Tail gas-heated organic heat carrier equipment dried sludge reutilization method |
| CN102182925A (en) * | 2011-04-06 | 2011-09-14 | 尹军 | Method for improving mobility of excess sludge in pipeline |
| CN102537973A (en) * | 2012-01-16 | 2012-07-04 | 中昌环保集团有限公司 | Novel process for pyrolysis of solid wastes |
| CN103244957A (en) * | 2012-02-28 | 2013-08-14 | 四川宇阳环境工程有限公司 | Integral treatment method for drying and incinerating sludge |
| CN102633419A (en) * | 2012-05-07 | 2012-08-15 | 浙江利保环境工程有限公司 | Sludge pyrolysis treatment process by taking waste plastic as supplementary energy |
| CN102701559A (en) * | 2012-05-24 | 2012-10-03 | 天津科技大学 | Method and device for comprehensively treating sludge generated by sewage treatment plant and kitchen waste oil |
| CN103508205A (en) * | 2012-06-29 | 2014-01-15 | 上海城投污水处理有限公司 | Dry sludge conveying device |
| CN103508205B (en) * | 2012-06-29 | 2016-03-02 | 上海城投污水处理有限公司 | A kind of dewatered sludge feedway |
| CN102878570A (en) * | 2012-10-10 | 2013-01-16 | 中国石油化工股份有限公司 | Method and equipment for treating chemical sludge by blending and combusting chemical sludge in pulverized coal furnace |
| CN103043879A (en) * | 2012-12-20 | 2013-04-17 | 东南大学 | Equipment and method for drying sludge with flue gas |
| CN103073168A (en) * | 2012-12-20 | 2013-05-01 | 东南大学 | Flue gas-sludge indirect contact drying device and method |
| CN103982897B (en) * | 2014-03-19 | 2017-08-29 | 上海欣鼎钢结构件有限公司 | A kind of incinerator system |
| CN103982897A (en) * | 2014-03-19 | 2014-08-13 | 上海欣鼎钢结构件有限公司 | Incinerator system |
| CN104312654A (en) * | 2014-10-16 | 2015-01-28 | 无锡华光锅炉股份有限公司 | Fuel sludge preparation device |
| CN104310746A (en) * | 2014-10-29 | 2015-01-28 | 天津市美好生活科技有限公司 | Method for drying and incinerating treatment of dewatered sludge |
| CN104310746B (en) * | 2014-10-29 | 2015-10-07 | 天津市美好生活科技有限公司 | The method of a kind of dewatered sludge drying and incineration process |
| CN104315523A (en) * | 2014-11-07 | 2015-01-28 | 西安建筑科技大学 | Method for drying and burning sludge via cement plant kiln tail system |
| CN107572748A (en) * | 2017-10-20 | 2018-01-12 | 大连大开污水处理有限公司 | A kind of device for separating mud and water |
| CN108793668A (en) * | 2018-06-05 | 2018-11-13 | 湖南恒凯环保科技投资有限公司 | A kind of method that sludge atomization drying burns |
| CN108793668B (en) * | 2018-06-05 | 2021-06-18 | 湖南恒凯环保科技投资有限公司 | Method for atomizing, drying and incinerating sludge |
| CN111006220A (en) * | 2019-12-12 | 2020-04-14 | 浙江裕峰环境服务股份有限公司 | Industry is useless admittedly and is burnt system in coordination with mud |
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