CN105130515A - Aerobic fermentation drying dehydration method for co-processing of life garbage with cement kiln - Google Patents
Aerobic fermentation drying dehydration method for co-processing of life garbage with cement kiln Download PDFInfo
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- CN105130515A CN105130515A CN201510564289.4A CN201510564289A CN105130515A CN 105130515 A CN105130515 A CN 105130515A CN 201510564289 A CN201510564289 A CN 201510564289A CN 105130515 A CN105130515 A CN 105130515A
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- aerobic fermentation
- fermentation
- fermentation drying
- dehydrating
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses an aerobic fermentation drying dehydration method and an apparatus thereof for co-processing of life garbage with cement kiln. After the city life garbage is pre-fragmented and is accumulated into windrow, the upper part of the windrow is covered with a high-molecular fermentation membrane, the bottom of the windrow is ventilated with air according to set program, a enclosed fermentation is carried out, after a period time of fermentation, the purpose of precipitation is realized, fermentation residues are sorted into combustible matters and noncombustible matters, which can be used as alternative fuel and raw material for cement production. The routine composting technology is improved according to the invention, and is used for co-processing of life garbage with cement kiln; the quality of the compost product does not have extra high requirements, only the moisture is needed to be reduced with short fermentation time. Turning, moving and other movement mechanisms are not needed, the material is in stationary state from beginning to end with low energy consumption. By means of the characteristics that the fermentation membrane can selectively filter moisture and intercept stink molecules, the invention does not need offensive odor gas disposal apparatus to be constructed for matching, thereby reducing environmental pollution and investment.
Description
Technical field
The invention belongs to the interleaving techniques field of manufacture of cement and city domestic garbage treating process technology, be specifically related to a kind of the aerobic fermentation drying and dehydrating method and the device that are applicable to cement kiln synergic processing domestic refuse.
Background technology
Cement " 12 " planning is write along with utilizing cement kiln synergic processing domestic waste project, using the alternative fuel of the combustiblematerials parts such as plastics, paper, wooden bamboo, rubber in domestic waste as cement mill, using the alternative materials as cement mill such as kitchen excess, dregs, cement kiln is dissolved innoxious and utilize the effect in domestic waste and advantage to highlight gradually.But water ratio is higher in domestic waste, especially kitchen retentant fraction in municipal wastes, a large amount of moisture enters cement firing system, will affect the stability of firing system, and the vaporization of moisture simultaneously can consume more heat energy; On the other hand, in domestic waste, the Harmful ingredient content such as chlorine is higher, if directly enter cement firing system, will increase the possibility that cement burns till precalcining system Coating clogging.The modes such as the mechanical dehydration that current employing is traditional and oven dry reduce domestic waste water content and have that dewatering efficiency is low, unit treatment capacity is little, consume energy high deficiency, and substantially there is no the content of the objectionable constituent such as the chlorine in effective means minimizing domestic waste, these are all the technical barriers of restriction cement kiln process domestic waste.
Summary of the invention
Goal of the invention: for prior art Problems existing, the object of the invention is to provide that a kind of drying and dehydrating efficiency is high, the processing method of the domestic refuse aerobic fermentation drying and dehydrating matched with cement kiln synergic processing domestic waste that effectively can reduce interference component content, the present invention also provide on the other hand a kind of energy consumption realizing this processing method low, invest low domestic refuse aerobic fermentation drying and dehydrating device.
Technical scheme: aerobic fermentation technology is mainly used in the compost treatment of domestic waste at present, reach good organic matter degradation effect, produce for the purpose of high quality fertilizer, and aerobic fermentation of urban garbage drying and dehydrating technology is only make good use of the high temperature and percolate that produce in aerobe fermentation process, the content of the interference manufacture of cement compositions such as the water ratio of reduction domestic refuse and potassium, sodium, chlorine.The two has the difference of essence.For realizing object of the present invention, the technical solution used in the present invention is:
Be applicable to an aerobic fermentation drying and dehydrating method for cement kiln synergic processing domestic refuse, comprise the steps: that ecosystem domestic waste is carried out precrushing process by (1), obtain fermentation raw material; (2) fermentation raw material is piled up slivering buttress shape stockpile, below passes into air by the given timed interval and air flow, and top covers polymer mulch film, carries out sealed fermenting; (3) after fermentation ends, divide residues hank combustiblematerials and noncombustibles, respectively as alternative fuel and the raw material use of manufacture of cement.
As preferably, in above-mentioned steps (2), the ventilation operation passing into air in stockpile controls at 1:3 ~ 1:1 with stand-by time ratio, and air flow controls at 0.05 ~ 0.2m
3/ (minm
3heap body), the sealed fermenting time is 10 ~ 16 days.
As preferably, in above-mentioned steps (2), by regulating ventilation time, interval and air flow, the temperature controlling yeasting is 55 ~ 70 DEG C, and oxygen level is greater than 9%.
A kind of aerobic fermentation drying and dehydrating device being applicable to cement kiln synergic processing domestic refuse, comprise at least a pile groove, heap groove top covers polymer mulch film, enclosed space is formed between polymer mulch film and heap groove, heap trench bottom is furnished with ventilation system, described ventilation system comprises ventilator trunk and blower fan, for passing into air in enclosed space.
Further, described device also comprises Monitoring systems, for monitoring the environmental parameter of stockpile yeasting, comprises temperature, oxygen level and humidity.
Further, described ventilation system comprises automatic control module, for controlling the ventilation time of ventilation system, start and stop interval and air flow, described automatic control module also with Monitoring systems data cube computation, for adjusting controling parameters according to the environmental parameter got.
As preferably, described heap trench bottom is parallel laid at least 2 ventilator trunks along its length, equidistantly on the wall of described ventilator trunk offer aperture.
Beneficial effect: conventional compostation technique is improved by processing method of the present invention, for cement kiln synergic processing domestic refuse, does not have too high requirement to composting production quality, and only need to reach and fall low-moisture object, fermentation time is short.Do not have the running gear such as turning, movement, material remains static from start to finish, and energy consumption is low.Filter moisture by fermentation film selectivity, retain the feature of foul smell molecule, environmental pollution is little, without the need to auxiliary construction foul gas disposal plant, invests low.Relative to prior art, advantage of the present invention: (1) proposes drying and dehydrating aerobic fermentation technology being used for domestic waste first, the biomass energy of organism self and the vegetative activity of aerobic microbiological in domestic waste is utilized to carry out dried material, good drying and dehydrating effect can be reached, the consumption of extra power can be reduced again.(2) aerobic fermentation of urban garbage drying and dehydrating technology not only can drying and dehydrating, the content of the objectionable constituent such as chlorine in domestic waste can also be reduced by the mode of percolate, thus improve security, the reliability and stability of cement kiln process domestic waste.
Accompanying drawing explanation
Fig. 1 be use aerobic fermentation drying and dehydrating device of the present invention with the structural representation of cement kiln synergic processing domestic waste production line.
In figure: the first belt conveyor 1, forklift 2, blower fan 3, valve 4, polymer mulch film 5, heap groove 6, second belt conveyor 7.
Embodiment
Below in conjunction with accompanying drawing and with specific embodiment, illustrate the present invention further.Should understand these embodiments to be only not used in for illustration of the present invention and to limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Aerobic fermentation drying and dehydrating technology is under the condition of well-ventilated, oxygen abundance, by the vital movement degradation of organic substances of aerobic microbiological, in this process, the temperature of domestic refuse material is generally at 55 ~ 60 DEG C, ultimate temperature can reach 80 ~ 90 DEG C, and in material, moisture removes in the mode of water vapour and percolate simultaneously.This technology can make domestic waste reach good drying and dehydrating effect, make the composition of the interference manufacture of cement such as potassium, sodium, chlorine discharge with percolate simultaneously, thus achieve the effect reducing domestic waste water ratio and interference component content, for cement kiln associated treatment domestic waste clears away technology barrier.
The embodiment of the invention discloses a kind of aerobic fermentation drying and dehydrating method being applicable to cement kiln synergic processing domestic refuse, first, ecosystem domestic waste is carried out broken, broken bag process in advance and obtain fermentation raw material.Fermentation raw material is the ecosystem rubbish through precrushing process, utilizes the distinctive porosity of domestic refuse and organic content, the shortcoming of overcome combustiblematerials when fermenting separately, organic content is low, biological activity is low, not easily fermenting; And noncombustibles is when fermenting separately, compactness is high, porosity is low, air not easily passs through, easily smelly defect.Then, fermentation raw material is delivered to fermentation plant, the disposable stockpile being piled into certain altitude, stockpile can be pile wide 5 ~ 10 meters, the bar buttress shape heap body of high 2.5 ~ 3 meters, heap body length can adjust according to garbage treatment quantity, polymer mulch film (fermentation film/air-permeable envelope) is covered above heap body, the EPTEE polymer fermentation film that this film can adopt MOR company of the U.S. to produce, save building cost, heap body can be prevented to be subject to the impact of outside climatic or to be soaked with rain, its inside then defines and is suitable for the required climatope of high-efficiency aerobic fermentation (temperature is 55 ~ 70 DEG C, oxygen level is greater than 9%), simultaneously, this film has throughout curve, the water molecules produced in fermenting process can freely pass through, foul gas molecule can not be through, be trapped within heap body, finally be biodegradable, reach dehydration object.Have plenum ventilation system bottom heap body, adopt Automated condtrol program, regulate ventilation time, interval and air flow, ventilating to running controls at 1:3 ~ 1:1 with stand-by time ratio, and air flow controls at 0.05 ~ 0.2m
3/ (minm
3heap body), carry out sealed fermenting, through fermentation in 10 ~ 16 days, reach the object (moisture removal to 30% ~ 40%) of precipitation, finally, residues delivers to sorting process operation, final point of hank combustiblematerials, noncombustibles two parts, delivers to cement mill and uses respectively as the alternative fuel of manufacture of cement and raw material.By Monitoring systems monitoring stockpile temperature, oxygen level and humidity in aerobic fermentation process, regulate ventilation time and interval, to reach best aerobic fermentation effect and shorter fermentation time.
As Fig. 1, a kind of aerobic fermentation drying and dehydrating device being applicable to cement kiln synergic processing domestic refuse disclosed in the embodiment of the present invention, comprise at least a pile groove 6(and size and the quantity of heap groove can be set according to the garbage treatment quantity of reality), heap groove 6 surrounding and bottom are concrete structure, top covers polymer mulch film 5, enclosed space is formed between polymer mulch film 6 and heap groove 5, domestic refuse is evenly deposited in groove 6, pile the bar buttress shape heap body of high 2.5 ~ 3 meters, top covers polymer mulch film 5, ferment at enclosed space, inner superfluous air, the gas such as water vapour and carbonic acid gas only filters rear discharge by polymer mulch film 5, the gas piling body inside is avoided to overflow from other position beyond film.Be furnished with ventilation system bottom heap groove 6, ventilation system comprises ventilator trunk and blower fan 3, for passing into air in enclosed space.Ventilation system also comprises automatic control module, adopts Automated condtrol program, regulates ventilation time, start and stop interval and air flow, controls ventilation size by the valve 4 on the blast inlet pipeline of blower fan 3.Ventilator trunk is laid on bottom heap groove 6, communicate with blower fan 3 air outlet pipeline, pipeline is evenly distributed in heap groove 6, can along heap groove 6 length direction parallel laid some ventilator trunks (as 2 ~ 5), concrete quantity and spacing between pipes can suitably adjust according to actual needs, equidistantly below pipe side wall offer aperture, aperture 5 ~ 10mm, air from pipe interior by aperture to heap body inner inflatable.Device is also furnished with Monitoring systems, some sensors (as Temperature Humidity Sensor, oxygen sensor etc.) are set in heap groove 6 and carry out measurement environment parameter, by parameters such as Monitoring systems monitoring stockpile temperature, oxygen level and humidity, for following the tracks of and assessing the situation of piling body materials inside aerobic fermentation, and these parameter informations are sent to the automatic control module of ventilation system, adjust the controling parameters such as the ventilation time of ventilation system, interval, air flow accordingly.
Illustrating below in conjunction with concrete example uses the aerobic fermentation drying and dehydrating device of the present embodiment to realize the processing method with cement kiln synergic processing domestic waste.To learn from else's experience the domestic waste 20 tons of precrushing, transport in fermentation heap groove 6 through the first belt conveyor 1 and forklift 2, be piled into the heap body being of a size of 8m (length) × 5m (wide) × 2.5m (height), heap body covers gas permeable polymer film 5, adopt gas blower 3 from piling bottom body to heap body inner homogeneous plenum ventilation, by the environmental parameter of Monitoring systems monitoring sealed fermenting, ventilation system is according to the heap temperature of body inside, oxygen level and humidity of materials, control plenum ventilation amount and ventilation time, average ventilation is about 0.1m
3/ minm
3heap body, through the continuous aerobic fermentation process of 12 ~ 15 days, the water ratio of rubbish material was by initial about 50% ~ 60%, be reduced to about 30%, weight of material reduces to 12 tons, and weight-loss ratio reaches 30%, combustion is clamminess by initial wet filtering, and becomes dry loose, dehydrates successful.Then, by the second belt conveyor 7, the material after fermentation is delivered to Pre-sorting system, after point electing combustiblematerials, noncombustibles two portions as, then deliver to cement production system and carry out ultimate disposal respectively as alternative fuel, raw material.
In the embodiment of the present invention, the application of aerobic fermentation drying and dehydrating technology is by the treatment capacity of raising cement kiln associated treatment domestic waste project, reliability, stability and security, reduce the ore of cement production enterprise and the consumption of Nonrenewable energy resources, reduce manufacture of cement cost, for enterprise brings indirectly economic benefit.On the other hand; this technology can effectively boosting cement kiln synergic processing domestic waste project be promoted more widely and implement; for recycling municipal solid waste utilization, environment and ecological protection contribute, the demand for development of the Sustainable development green circulation economy that meets energy-saving and emission-reduction, improves the level of resources utilization, walks.
Claims (8)
1. be applicable to an aerobic fermentation drying and dehydrating method for cement kiln synergic processing domestic refuse, it is characterized in that, comprise the steps:
(1) ecosystem domestic waste is carried out precrushing process, obtain fermentation raw material;
(2) fermentation raw material is piled up slivering buttress shape stockpile, below passes into air by the given timed interval and air flow, and top covers polymer mulch film, carries out sealed fermenting;
(3) after fermentation ends, divide residues hank combustiblematerials and noncombustibles, respectively as alternative fuel and the raw material use of manufacture of cement.
2. aerobic fermentation drying and dehydrating method according to claim 1, is characterized in that: in described step (2), the ventilation operation passing into air in stockpile controls at 1:3 ~ 1:1 with stand-by time ratio, and air flow controls at 0.05 ~ 0.2m
3/ (minm
3heap body), the sealed fermenting time is 10 ~ 16 days.
3. aerobic fermentation drying and dehydrating method according to claim 2, is characterized in that: in described step (2), and by regulating ventilation time, interval and air flow, the temperature controlling yeasting is 55 ~ 70 DEG C, and oxygen level is greater than 9%.
4. aerobic fermentation drying and dehydrating method according to claim 1, is characterized in that: in described step (2), fermentation raw material is piled up wide 5 ~ 10 meters, high 2.5 ~ 3 meters the bar of body in heaps and pile up neatly shape stockpile.
5. one kind realizes the aerobic fermentation drying and dehydrating device being applicable to cement kiln synergic processing domestic refuse of aerobic fermentation drying and dehydrating method as claimed in claim 1, it is characterized in that: comprise at least a pile groove, heap groove top covers polymer mulch film, enclosed space is formed between polymer mulch film and heap groove, heap trench bottom is furnished with ventilation system, described ventilation system comprises ventilator trunk and blower fan, for passing into air in enclosed space.
6. aerobic fermentation drying and dehydrating device according to claim 5, is characterized in that: described device also comprises Monitoring systems, for monitoring the environmental parameter of stockpile yeasting, comprises temperature, oxygen level and humidity.
7. aerobic fermentation drying and dehydrating device according to claim 6, it is characterized in that: described ventilation system comprises automatic control module, for controlling the ventilation time of ventilation system, start and stop interval and air flow, described automatic control module also with Monitoring systems data cube computation, for adjusting controling parameters according to the environmental parameter that gets.
8. aerobic fermentation drying and dehydrating device according to claim 5, is characterized in that: described heap trench bottom is parallel laid at least 2 ventilator trunks along its length, equidistantly on the wall of described ventilator trunk offers aperture.
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| CN201510564289.4A CN105130515A (en) | 2015-09-07 | 2015-09-07 | Aerobic fermentation drying dehydration method for co-processing of life garbage with cement kiln |
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Cited By (5)
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| CN107088572A (en) * | 2017-04-21 | 2017-08-25 | 杭州科晟能源技术有限公司 | A kind of rubbish mesopilous organisms film drying method and desiccation apparatus |
| CN108224439A (en) * | 2017-12-29 | 2018-06-29 | 中国城市建设研究院有限公司 | A kind of method that house refuse desiccation storage winter burns heat supply |
| CN108213052A (en) * | 2018-02-06 | 2018-06-29 | 北京环境工程技术有限公司 | One kind is used for aging refuse classification aerobic pretreatment device and method |
| CN108246780A (en) * | 2018-03-09 | 2018-07-06 | 中材国际环境工程（北京）有限公司 | It is a kind of to utilize cement kiln synergic processing rubbish from cooking system and its method of disposal |
| CN109807163A (en) * | 2019-03-18 | 2019-05-28 | 王英宾 | Organic fixed-end forces device and method |
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