CN1733629A - Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge - Google Patents
Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge Download PDFInfo
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- CN1733629A CN1733629A CNA2005100506349A CN200510050634A CN1733629A CN 1733629 A CN1733629 A CN 1733629A CN A2005100506349 A CNA2005100506349 A CN A2005100506349A CN 200510050634 A CN200510050634 A CN 200510050634A CN 1733629 A CN1733629 A CN 1733629A
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- 239000010802 sludge Substances 0.000 title claims abstract description 97
- 238000001035 drying Methods 0.000 title claims abstract description 52
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 title claims abstract description 16
- 239000003245 coal Substances 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000010248 power generation Methods 0.000 claims description 14
- 238000004065 wastewater treatment Methods 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000003546 flue gas Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 7
- 239000004566 building material Substances 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004056 waste incineration Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 22
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract 1
- 239000011499 joint compound Substances 0.000 description 96
- 238000005516 engineering process Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000003517 fume Substances 0.000 description 5
- 238000012549 training Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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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- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an integrative method to use residue heat of garbage power plant to dry sludge and generate electricity by sludge, which comprises: 1) removing dust to the discharged smoke gas and drying sludge with two-stage; 2) pretreating the sludge from urban sewage disposal plant, or dredged sludge; 3) processing the pretreated sludge into column shape by machine for first drying stage; 4) cutting the said sludge out of kiln into particle; 5) taking second drying stage to sludge particle of size less than 6-10mm; 6) conveying the sludge to garbage electricity generating system to mix with garbage and coal and burn for electricity. This method has well social, environmental and economic benefits.
Description
Technical field
The present invention relates to a kind of garbage power plant smoke residual heat to dry sludge and incorporate method of sludge power generation utilized.
Background technology
In order to protect our limited water resource; create good living environment; sanitary sewage and trade effluent must be through the processing of sewage work; could discharge after reaching state sewage emission standard; whether have urban sewage treatment system; this has become the sign of a modern city civilization, also is the requisite environmental engineering measure of Urban Ecology Environment Construction.Urban sewage treatment system comprises sewage disposal and sludge treatment two portions.In recent years, by introducing advanced foreign technology and technological transformation, the water technology level of China is greatly improved, various types of sewage can both be effectively controlled, yet, owing to do not have a kind of effective sludge treatment technology to use for reference in the world, the sludge treatment technology of China to producing in the sewage treatment process lags behind the development of urban sewage treatment technology out and away.Various water technologies are transferred to most pollutents in the sewage in the mud in the process that sewage is purified, and it is big that this mud that makes the municipal sewage plant produce has quantity, and the characteristics of the hazardous contaminant of enrichment high density.
Be enriched with a large amount of organism and heavy metal in river and the lake sediment; flow through most of river course in China city deposits all the year round; the shipping function in river course is obviously descended; and quality of water environment is gone from bad to worse, dredging is to recover river, lake natural functions and the effective engineering measure of protection water surrounding.Yet dredging mud has the characteristics similar to sludge from wastewater treatment plant, and promptly quantity is big, the water ratio height, and be enriched with organic pollutants.
At present, China mainly takes the interim method of disposal of burying of piling to sludge from wastewater treatment plant and training of channel mud, not only spend a large amount of funds and take a large amount of land resources, and cause serious secondary pollution to ecotope, particularly ooze under the sewage in the mud, be unable to estimate especially to the harm that groundwater resource bring, and in fact peri-urban can not have space and the place that is fit to stack this class mud, the interim heap of mud buries the harm of the secondary environmental pollution that is produced, and has in fact offset the environmental benefit of the sewage disposal and the training of channel.Face the reality that environmental problem is sharp-pointed day by day and mud harm increasingly sharpens that mud causes, people attempt utilizing the mud as fertilizer sources, be used for agricultural or greening, but, each contained heavy metal species has limited the adaptability (table 1) that soil utilizes mud in the mud, studies show that, from waste water, remove the heavy metal of 1mg/L, will in mud, accumulate the heavy metal of 10000mg/L, their meeting enrichments in soil, and enter food chain by the absorption of crop, finally jeopardize the health of human body, even some mud is from city domestic sewage, though heavy metal content is lower, but contained pathogenic agent and persistence organic pollutant in the mud, and the various medicaments that add in the sewage treatment process all can bring potential harm to environment.
The content of heavy metal in table 1 municipal sludge and the dredging mud
| Project | Heavy metal (mg/kg) | Remarks | ||||||||
| Cu | Pb | Zn | Cr | Cd | Ni | As | Hg | |||
| Municipal sludge | Mean value | 326.6 | 192.9 | 2261 | 296.3 | 4.1 | 297.4 | 16.9 | 3.9 | According to 4 years analysis data |
| Content range | 236.2- 397.2 | 80.78- 314.0 | 69.5- 3790 | 27.9- 592.4 | 1.35- 7.2 | 57.5- 750.3 | 8.9- 31.9 | 0.8- 4.3 | ||
| Dredging mud | Mean value | 138.77 | 69.6 | 2042 | 93.0 | 1.6 | 46.8 | 20.7 | 0.8 | Canal (Hangzhou Section) |
| Content range | 13.7- 772.3 | 17.3- 164.2 | 73.89- 4153 | 44.1- 123.2 | 0.27- 6.91 | 27.3- 80.7 | 5.97- 65.8 | 0.1- 5.03 | ||
Practice with reference to external sludge incineration, some places attempt to reach by burning the purpose of mud decrement, still, and sludge incineration facility investment volume height, energy-output ratio is big, working cost costliness, the expense of sludge incineration add that more than 400 yuan/ton mud is when burning, can to atmospheric environment bring pollute and burn after residue reason such as still need dispose, according to the national conditions of China, sludge incineration is handled and is difficult to economically bear, and goes back imperfection technically.
Along with increasing rapidly of China's rapid economy development and urban population, the quantity of municipal effluent is constantly increasing, meanwhile people are more and more higher to the requirement of environmental quality, trade effluent and domestic sewage treating rate also will improve constantly, the quantity that this means sludge of sewage treatment plant will grow with each passing day, therefore, open up one municipal sludge carried out safety, economic effective processing approach, imperative.Practice shows that municipal sludge will be handled completely, must walk innoxious, minimizing and resource utilization road.According to our physico-chemical property to sludge from wastewater treatment plant, carry out continuous 3 years studies show that, the main chemical compositions content in the mud little (table 2), this has illustrated the mud that the municipal sewage plant produces, it is main
The chemical constitution of table 2 sludge from wastewater treatment plant (%)
Chemical constitution is a kept stable.The loss on ignition of mud is higher, on average reaches about 36%, and the content of full nitrogen and full phosphorus is also higher, and this shows and contains higher organic substance in the mud.Organic content height in the mud, its calorific value is also high, shows by mensuration, and the calorific value of sludge from wastewater treatment plant is equivalent to the calorific value of brown coal, reaches the 1/3-1/2 (table 3) of standard coal calorific value; Content organic in the city river dredging mud is also higher, and according to the mutual relationship between organism and the calorific value, its calorific value is also than higher.If the heat energy in the mud can be developed, not only can make municipal sludge treatment plant mud and training of channel mud obtain thoroughly handling safely, and the heat energy that mud is had become valuable resource.
| Sample | Chemical constitution (%) | Remarks | ||||||||||
| SiO 2 | MgO | CaO | Fe 2O 3 | Al 2O 3 | K 2O | Na 2O | Full nitrogen | Full phosphorus | Loss on ignition | |||
| Municipal sludge | Content range | 35.10 - 35.78 | 2.18 - 3.73 | 5.40 - 6.44 | 2.80 - 4.68 | 7.20 - 8.47 | 0.69 - 0.82 | 0.51 - 0.62 | 1.35 - 2.90 | 0.8 - 0.7 | 35.26 - 36.30 | 3 years monitoring data |
| Mean value | 35.49 | 3.13 | 6.53 | 3.84 | 7.94 | 0.73 | 0.58 | 2.13 | 0.75 | 35.95 | ||
Table 3 sludge from wastewater treatment plant, training of channel mud and burning of coal calorific value
| Kind | Thermal value (doing matter) | |
| (kilojoule per kilogram) | (kcal/kg) | |
| Primary sludge (fresh mud) | 15800-18200 | 3780-4354 |
| Active sludge (fresh mud) | 15200-15300 | 3636-3660 |
| Active mud+just heavy mud (fresh mud) | 17000 | 4067 |
| Active mud+just heavy mud (digestion mud) | 7450 | 1782 |
| Bituminous coal (standard coal) | 20900-33500 | 5000-8014 |
| Brown coal | 9540-12720 | 2282-3043 |
Yet, sludge of sewage treatment plant and training of channel mud, pass through mechanical dehydration, water ratio is generally between 75%-85%, if mud can be burnt, must be at first the solid content of mud be reached 100%, this means needs a large amount of external energies, the calculating that is based upon on the experimental basis shows, will be with the complete after-flame of mud of water ratio 75% one 85%, make mud arrive the needed energy of burning-point,, need the reason of high cost in also sludge incineration sludge treatment just greater than the energy that sludge incineration produced.We propose to utilize refuse-burning plant discharged flue gas waste heat, earlier with sludge drying, then, with the mud after the mummification with rubbish, coal burning electricity generation, residue through rubbish, mud and coal behind the combustion power generation, be used for producing light building material, thereby realize that sludge from wastewater treatment plant obtains the ultimate aim of thoroughly innoxious, minimizing and recycling treatment.
Summary of the invention
The purpose of this invention is to provide a kind of garbage power plant smoke residual heat to dry sludge and incorporate method of sludge power generation utilized.
The step of method is:
1) waste heat supply temperature that waste incineration and generating electricity is discharged is 130 ℃-160 ℃ a flue gas, through dedusting, delivers to respectively in the first revolution drying kiln and the second revolution drying kiln, carries out the two-part dewatered sludge;
2) with water ratio be the sludge from wastewater treatment plant of 70-85%, or river, lake dredging mud, stack at mud and stacked 3-5 days, and carry out the preceding pre-treatment of sludge drying with turning over the machine of mixing;
3) will use banded extruder through pretreated mud, making diameter is the bar column of 8-10 millimeter, then bar column mud is sent into first revolution drying kiln, carries out the fs sludge drying;
4) behind the above-mentioned mud kiln discharge,,,, be cut into the mud granule of diameter less than the 6-10 millimeter with big mud granule through separation cuts formula pulverizer by the cold wind conveying belt;
5) particle diameter is admitted to second revolution drying kiln less than the mud granule of 6-10 millimeter, carries out the subordinate phase sludge drying;
6) through above-mentioned two-part drying process, behind the mud kiln discharge,, be sent to rubbish power generating device, mix, carry out burning electricity generation with rubbish, coal by conveying belt.
The residual inorganics of burning electricity generation is as the raw material of producing building materials.The hot blast rate of first revolution drying kiln sludge drying is 80000-150000m
3/ hour.In second revolution drying kiln material delivering plate is housed, the hot blast rate of sludge drying is 40000-80000m
3/ hour.First revolution drying kiln diameter is 2.0-2.4m, and is long for 22-28m, is equipped with in the kiln and makes further dispersive supplementary unit of mud and material delivering plate.Second revolution drying kiln diameter is 1.8-2.2m, and be long for 20-26m, and material delivering plate is housed in the kiln.During pre-treatment before the sludge drying, the foul smell of release is eliminated by the soil organisms filter bed.
Advantage of the present invention:
1) utilizes the rubbish smoke residual heat to dry sludge, can be under the situation that does not consume new forms of energy, the water ratio of sludge of sewage treatment plant is reduced, not only created condition for the heat energy power-generating that utilizes sludge from wastewater treatment plant and dredging mud, and the energy that garbage power is produced is fully utilized, and in fact this opened up a cyclic utilization of waste, the effective way of the treatment of wastes with processes of wastes against one another, significant social and environmental benefit can either be produced, tangible economic benefit can be obtained again.
2) utilize the rubbish smoke residual heat to dry sludge, because thermal source intercepts from flue, the exhaust gas volumn size of intercepting can be controlled by air door, and therefore, when the revolution drying kiln need overhaul, flue gas still can smooth and easyly be discharged, and can not influence the normal operation of garbage power.
3) the present invention utilizes the rubbish fume afterheat, make mud under cold condition, obtain mummification, thereby kept the original calorific value of mud, mud after the mummification is with rubbish, coal combustion power generation, can make sludge from wastewater treatment plant He He, lake dredging mud obtain innoxious completely and the minimizing processing, the heat resource of mud is farthest utilized.Because refuse-burning plant has strict airborne release measure, therefore, mud can not produce any influence to environment in mummification and power generation process.The present invention drops into practice at jiangsu wuxi, and practice shows, adopts this technology not only to make municipal sludge obtain effectively innoxious and recycling treatment, and makes the complete qualified discharge of flue gas, obtains significant social, environment and economic triple benefit.
Description of drawings
Accompanying drawing is to utilize garbage power plant smoke residual heat to dry sludge and the incorporate method flow diagram of sludge power generation.
Embodiment
The present invention utilizes garbage power plant smoke residual heat, by the two-stage sludge drying process, make sludge from wastewater treatment plant or river, lake dredging mud under cold condition, obtain mummification, thereby kept the original heat energy of mud, then with the mud after the mummification with rubbish, coal burning electricity generation, burn the residual inorganics in back and be used for making light building material.
The present invention is the flue gas with refuse-burning plant, behind composite dedusting, is 130-160 ℃ flue gas with induced draft fan with this waste heat supply temperature, delivers to respectively in two revolution drying kilns through flue, carries out the two-part dewatered sludge.First revolution drying kiln diameter is 2.0-2.4m, long is 22-28m, be equipped with in the kiln and make further dispersive supplementary unit of mud and material delivering plate, help to increase the area that mud contacts with flue gas, second revolution drying kiln diameter is 1.8-2.2m, long is 20-26m, in second revolution drying kiln material delivering plate is housed, and increases the area that mud contacts with flue gas.With water ratio is the sludge from wastewater treatment plant of 70-85% or river, lake dredging mud, stack stacking 3-5 days at mud, and it is mixed through turning over turning over of the machine of mixing, make a part of moisture content spontaneous evaporation in the mud on the one hand, make on the other hand from homologous mud homogenizing not, by banded extruder, mud is made the bar column that diameter is the 8-10 millimeter then, can fully contact during for sludge drying, improve dehydrating effect and create conditions with flue gas.Bar column mud is sent into first revolution drying kiln, carry out the fs mummification, under the windsheild control that is installed between smoke conveying duct and the revolution drying kiln, making provides the hot blast rate of sludge drying to remain on 80000-150000m
3/ hour, through the mummification of fs, remove the moisture content of mud 20-30%.Behind the above-mentioned mud kiln discharge, by the cold wind conveying belt, make mud in the process of cooling, further reduce water ratio, cooled mud through separation cuts formula pulverizer, is cut into the mud granule of big particle diameter the particle of particle diameter 6-10 millimeter, send into second revolution drying kiln again, carry out the subordinate phase mummification, under the windsheild control that is installed between smoke conveying duct and the revolution drying kiln, making provides the hot blast rate of sludge drying to remain on 40000-80000m
3/ hour, through the mummification of subordinate phase, remove the moisture content of mud 30-40%.Behind the mud kiln discharge,, be sent to rubbish power generating device, mix, carry out burning electricity generation together with rubbish, coal by conveying belt.Mud is residual inorganics after burning fully, and its chemical ingredients is similar to the residue of rubbish and coal, mainly is silicon oxide, calcium oxide and alchlor, can be used as the raw material of producing building materials, the direct production light building material.
Embodiment 1, the jiangsu wuxi refuse-burning plant, and existing two incinerators put into operation, and the exhaust gas volumn of every incinerator generation is 150000m
3/ hour, about 150 ℃ of fume afterheat temperature utilize this technology day to handle municipal sludge (about water ratio 75%) 100 tons.Earlier mud is carried out pre-treatment stacking, a part of moisture content is fallen in spontaneous evaporation, and makes the mud homogenizing, and then by banded extruder, it is 8 millimeters bar column that mud is extruded into diameter, sends into first revolution drying kiln, uses 100000m
3/ hour exhaust gas volumn, carry out the mummification of fs, make the water ratio of mud reduce by 25%, behind this mud kiln discharge,, enter the second revolution drying kiln through cold conveying belt, use 50000m
3/ hour exhaust gas volumn, carry out the mummification of subordinate phase, make the water ratio of mud reduce by 31%, through the mud after the two-stage fume afterheat mummification, the calorific value that has kept primary sludge 93%, with it and rubbish, the coal burning electricity generation that is mixed, the calorific value that dewatered sludge per ton produces approaches 1/2nd of standard coal calorific value, is equivalent to every day contribute by 10 tons of electric power that standard coal sent.Residue after the burning is made light wall material.This example table is clear to utilize this invention technology, not only can make municipal sludge obtain harmless resource utilization processing completely, produces significant social and environmental benefit, and can produce tangible economic benefit.
Embodiment 2, the Zhejiang refuse-burning plant, and the exhaust gas volumn that waste incineration and generating electricity produces is 130000m
3/ hour, about 130 ℃ of fume afterheat temperature utilize this technology day to handle municipal sludge (about water ratio 75%) 50 tons.Earlier mud is carried out pre-treatment stacking, a part of moisture content is fallen in spontaneous evaporation, and makes the mud homogenizing, and then by banded extruder, it is 8 millimeters bar column that mud is extruded into diameter, sends into first revolution drying kiln, uses 80000m
3/ hour exhaust gas volumn, carry out the mummification of fs, make the water ratio of mud reduce by 20%, behind this mud kiln discharge,, enter the second revolution drying kiln through cold conveying belt, use 50000m
3/ hour exhaust gas volumn, carry out the mummification of subordinate phase, make the water ratio of mud reduce by 33%, through the mud after the two-stage fume afterheat mummification, the calorific value that has kept primary sludge 95%, with it and rubbish, the coal burning electricity generation that is mixed, the calorific value that dewatered sludge per ton produces approaches 1/2nd of standard coal calorific value, is equivalent to every day contribute by 5 tons of electric power that standard coal sent.
Claims (7)
1. one kind is utilized garbage power plant smoke residual heat to dry sludge and sludge power generation integral method, it is characterized in that the step of method is:
1) waste heat supply temperature that waste incineration and generating electricity is discharged is 130 ℃-160 ℃ a flue gas, through dedusting, delivers to respectively in the first revolution drying kiln and the second revolution drying kiln, carries out the two-part dewatered sludge;
2) with water ratio be the sludge from wastewater treatment plant of 70-85%, or river, lake dredging mud, stack at mud and stacked 3-5 days, and carry out the preceding pre-treatment of sludge drying with turning over the machine of mixing;
3) will use banded extruder through pretreated mud, making diameter is the bar column of 8-10 millimeter, then bar column mud is sent into first revolution drying kiln, carries out the fs sludge drying;
4) behind the above-mentioned mud kiln discharge,,,, be cut into the mud granule of diameter less than the 6-10 millimeter with big mud granule through separation cuts formula pulverizer by the cold wind conveying belt;
5) particle diameter is admitted to second revolution drying kiln less than the mud granule of 6-10 millimeter, carries out the subordinate phase sludge drying;
6) through above-mentioned two-part drying process, behind the mud kiln discharge,, be sent to rubbish power generating device, mix, carry out burning electricity generation with rubbish, coal by conveying belt.
2. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1 is characterized in that the residual inorganics of described burning electricity generation is as the raw material of producing building materials.
3. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1 is characterized in that the hot blast rate of described first revolution drying kiln sludge drying is 80000-150000m
3/ hour.
4. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1 is characterized in that the hot blast rate of described second revolution drying kiln sludge drying is 40000-80000m
3/ hour.
5. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1, it is characterized in that described first revolution drying kiln diameter is 2.0-2.4m, long for 22-28m, be equipped with in the kiln and make further dispersive supplementary unit of mud and material delivering plate.
6. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1 is characterized in that described second revolution drying kiln diameter is 1.8-2.2m, and be long for 20-26m, and material delivering plate is housed in the kiln.
7. a kind of garbage power plant smoke residual heat to dry sludge and sludge power generation integral method of utilizing according to claim 1, when it is characterized in that the pre-treatment before the described sludge drying, the foul smell of release is eliminated by the soil organisms filter bed.
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| CNB2005100506349A CN1285521C (en) | 2005-07-08 | 2005-07-08 | Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge |
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| CNB2005100506349A CN1285521C (en) | 2005-07-08 | 2005-07-08 | Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge |
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| CN1285521C CN1285521C (en) | 2006-11-22 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817629A (en) * | 2010-03-30 | 2010-09-01 | 浙江大学 | Integrated method and device for sludge drying incineration and power generation |
| CN102267795A (en) * | 2011-06-17 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Dewatered sludge drying method of wastewater treatment plant |
| CN102330990A (en) * | 2011-04-28 | 2012-01-25 | 刘宗庆 | Production process for efficiently and cleanly utilizing domestic garbage and sludge |
| CN102531318A (en) * | 2011-12-06 | 2012-07-04 | 华北电力大学（保定） | Sludge drying and incinerating integrated zero-discharge treatment system and treatment process |
| CN101463261B (en) * | 2009-01-09 | 2012-07-04 | 北京博奇电力科技有限公司 | Integrated system and method for producing oil from sludge and refuse incineration |
| CN102537979A (en) * | 2010-12-07 | 2012-07-04 | 福建省丰泉环保控股有限公司 | Method for integrating sludge drying and waste incineration |
| CN103803769A (en) * | 2014-01-13 | 2014-05-21 | 重庆交通大学 | Vertical inter-partition sludge drying method and equipment with crushing and safety monitoring functions |
| CN105859090A (en) * | 2016-04-11 | 2016-08-17 | 娈疯 | Civil sludge comprehensive treatment process |
| CN113860697A (en) * | 2021-11-08 | 2021-12-31 | 抚顺新钢铁有限责任公司 | Iron and steel waste heat and municipal sludge synergistic harmless treatment process |
| CN113932224A (en) * | 2021-11-17 | 2022-01-14 | 上海东石塘再生能源有限公司 | Drying equipment for cooperatively treating sludge in household garbage incineration plant |
| CN115231798A (en) * | 2022-06-20 | 2022-10-25 | 广州中电荔新热电有限公司 | Sludge treatment and transportation system |
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2005
- 2005-07-08 CN CNB2005100506349A patent/CN1285521C/en not_active Expired - Fee Related
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| CN101463261B (en) * | 2009-01-09 | 2012-07-04 | 北京博奇电力科技有限公司 | Integrated system and method for producing oil from sludge and refuse incineration |
| CN101817629A (en) * | 2010-03-30 | 2010-09-01 | 浙江大学 | Integrated method and device for sludge drying incineration and power generation |
| CN102537979A (en) * | 2010-12-07 | 2012-07-04 | 福建省丰泉环保控股有限公司 | Method for integrating sludge drying and waste incineration |
| CN102330990A (en) * | 2011-04-28 | 2012-01-25 | 刘宗庆 | Production process for efficiently and cleanly utilizing domestic garbage and sludge |
| CN102267795A (en) * | 2011-06-17 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Dewatered sludge drying method of wastewater treatment plant |
| CN102531318A (en) * | 2011-12-06 | 2012-07-04 | 华北电力大学（保定） | Sludge drying and incinerating integrated zero-discharge treatment system and treatment process |
| CN102531318B (en) * | 2011-12-06 | 2013-10-30 | 华北电力大学（保定） | Sludge drying and incinerating integrated zero-discharge treatment system and treatment process |
| CN103803769A (en) * | 2014-01-13 | 2014-05-21 | 重庆交通大学 | Vertical inter-partition sludge drying method and equipment with crushing and safety monitoring functions |
| CN105859090A (en) * | 2016-04-11 | 2016-08-17 | 娈疯 | Civil sludge comprehensive treatment process |
| CN113860697A (en) * | 2021-11-08 | 2021-12-31 | 抚顺新钢铁有限责任公司 | Iron and steel waste heat and municipal sludge synergistic harmless treatment process |
| CN113932224A (en) * | 2021-11-17 | 2022-01-14 | 上海东石塘再生能源有限公司 | Drying equipment for cooperatively treating sludge in household garbage incineration plant |
| CN115231798A (en) * | 2022-06-20 | 2022-10-25 | 广州中电荔新热电有限公司 | Sludge treatment and transportation system |
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