CN201520727U - Improved tunnel type waste heat utilization device adopting aerobic compost fermentation technology - Google Patents
Improved tunnel type waste heat utilization device adopting aerobic compost fermentation technology Download PDFInfo
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- CN201520727U CN201520727U CN2009202227512U CN200920222751U CN201520727U CN 201520727 U CN201520727 U CN 201520727U CN 2009202227512 U CN2009202227512 U CN 2009202227512U CN 200920222751 U CN200920222751 U CN 200920222751U CN 201520727 U CN201520727 U CN 201520727U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model provides an improved tunnel type waste heat utilization device adopting the aerobic compost fermentation technology. The device comprises an air supply main pipe, an air discharge main pipe, a plurality of air supply branch pipes and a plurality of air discharge branch pipes, wherein one end of each air supply branch pipe is communicated with the air supply main pipe, and the other end is communicated with a fermentation duct to supply air; and one end of each air discharge branch pipe is communicated with the air discharge main pipe, and the other end is communicated with a fermentation tunnel to discharge air. The system further comprises a plurality of waste heat utilization air pipes, wherein, one end of each waste heat utilization air pipe is communicated with the air discharge main pipe, and the other end is communicated with one of the air supply branch pipes; and each waste heat utilization air pipe is provided with a waste heat utilization air valve. The utility model has the advantage that the discharged air with waste heat is led in from the air discharge main pipe by the waste heat utilization air pipes directly, thereby making good use of the waste heat and shortening the fermentation period.
Description
Technical field
The utility model relates to a kind of rubbish fermentation treatment process air feed exhaust system, specifically, is a kind of tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying.
Background technology
The heap body of garbage aerobic compost is the bio-reaction system of a complexity, character such as the material uniformity coefficient of the inner each several part of heap body, aeration status there are differences, and extraneous factors such as air blast oxygen supply temperature control process, temperature are not quite similar to the influence of the garbage compost rotten degree of heap body different positions.Temperature is the most simple and efficient index of compost stability evaluation, and reaching temperature fast and keeping certain hour is more satisfactory state.Supply and discharge by rubbish fermentation treatment process air feed exhaust system control air can reach the purpose of controlling oxygen-supplying amount and temperature control.Rubbish fermentation treatment process air feed exhaust system commonly used now comprises air feed house steward, air draft house steward, a plurality of air feed arm and a plurality of air draft arm, and an end of air feed arm is communicated with the air feed house steward, and the other end is used for being communicated with fermentation wind ditch and carries out air feed; One end of air draft arm is communicated with the air draft house steward, and the other end is used for being communicated with the fermentation tunnel and carries out air draft.Yet this rubbish fermentation treatment process air feed exhaust system makes gas directly discharge, and the heat in the expellant gas is reused, and makes that the cycle of rubbish fermentation is longer.Although also some rubbish fermentation treatment process air feed exhaust system has been introduced some by the circulation airduct and has been discharged gas from the fermentation tunnel, but this mode is circulating from body of individual tunnel gas, can not reach the purpose that makes full use of waste heat, because the temperature between each tunnel can there are differences, this mode is not easy to the temperature control and the UTILIZATION OF VESIDUAL HEAT IN of whole fermentation system.So be necessary existing rubbish fermentation treatment process air feed exhaust system is improved, so that better reach the purpose that the temperature equalisation in UTILIZATION OF VESIDUAL HEAT IN and each tunnel is regulated.
The utility model content
In order to address the above problem, the utility model improves existing rubbish fermentation treatment process air feed exhaust system, a kind of tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying is provided, comprise air feed house steward, air draft house steward, a plurality of air feed arm and a plurality of air draft arm, one end of air feed arm is communicated with the air feed house steward, and the other end is used for being communicated with fermentation wind ditch and carries out air feed; One end of air draft arm is communicated with the air draft house steward, the other end is used for being communicated with the fermentation tunnel and carries out air draft, and this system also comprises a plurality of UTILIZATION OF VESIDUAL HEAT IN airducts, and an end of UTILIZATION OF VESIDUAL HEAT IN airduct is communicated with the air draft house steward, the other end is communicated with the air feed arm, and the UTILIZATION OF VESIDUAL HEAT IN airduct is provided with the UTILIZATION OF VESIDUAL HEAT IN air-valve.
Preferably, this system also comprises a plurality of circulation airducts, and an end of circulation airduct is communicated with the air feed arm, and the other end is used for being communicated with the fermentation tunnel and circulates and use wind, and the circulation airduct is provided with the circulation air-valve.
Preferably, the air feed arm is connected with blower fan, and the air feed arm is provided with the air feed air-valve.
Preferably, UTILIZATION OF VESIDUAL HEAT IN airduct and being connected to of air feed arm are flexible coupling.
UTILIZATION OF VESIDUAL HEAT IN airduct of the present utility model is directly introduced the discharge gas that has waste heat from the air draft house steward, played the balanced effect of regulating of the temperature in the tunnel that respectively ferments in the whole fermentation system, has well utilized waste heat, has shortened fermentation period.
Description of drawings
Fig. 1 is a tunnel air feed system synoptic diagram;
Fig. 2 is a tunnel exhaust system synoptic diagram;
Fig. 3 is individual tunnel air feed in the prior art, exhaust system front view;
Fig. 4 is individual tunnel air feed in the prior art, exhaust system side-view;
Fig. 5 is individual tunnel air feed of the present utility model, exhaust system front view;
Fig. 6 is individual tunnel air feed of the present utility model, exhaust system side-view.
Among the figure, 1-air feed house steward, 2-air draft house steward, 3-air feed arm, 4 air draft arms, 5-UTILIZATION OF VESIDUAL HEAT IN airduct, 6-fermentation wind ditch, the 7-tunnel that ferments, 8-blower fan, 9-circulation airduct, 10 air feed air-valves, 11-circulation air-valve.
Embodiment
Describe tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying of the present utility model below for example in detail.
Shown in Fig. 1,2,5,6, tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying of the present utility model comprises air feed house steward 1, air draft house steward 2, a plurality of air feed arm 3 and a plurality of air draft arm 4, one end of air feed arm 3 is communicated with air feed house steward 1, and the other end is used for being communicated with fermentation wind ditch 6 and carries out air feed; One end of air draft arm 4 is communicated with air draft house steward 2, the other end is used for being communicated with fermentation tunnel 7 and carries out air draft, and this system also comprises a plurality of UTILIZATION OF VESIDUAL HEAT IN airducts 5, and an end of UTILIZATION OF VESIDUAL HEAT IN airduct 5 is communicated with air draft house steward 2, the other end is communicated with air feed arm 3, and UTILIZATION OF VESIDUAL HEAT IN airduct 5 is provided with the UTILIZATION OF VESIDUAL HEAT IN air-valve.This system also comprises a plurality of circulation airducts 9, and an end of circulation airduct is communicated with air feed arm 3, and the other end is used for being communicated with fermentation tunnel 7 and circulates and use wind, and circulation airduct 9 is provided with circulation air-valve 11.Air feed arm 3 is connected with blower fan 8, and air feed arm 3 is provided with air feed air-valve 10.Wherein, UTILIZATION OF VESIDUAL HEAT IN airduct 5 is flexible coupling with being connected to of air feed arm 3.
Above-mentioned tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying is the improvement of carrying out on the basis of the rubbish fermentation treatment process air feed exhaust system of Beijing's Nangong composting plant.Beijing original system of Nangong composting plant is by German Government donations, and one of China and area, Asia increasingly automated, extensive, modernized garbage compost factory is bearing the part refuse treatment task of Xuanwu District, Beijing and Fengtai District.The Nangong composting plant adopts advanced forced ventilation tunnel aerobic fermentation technique, daily handling ability is 600 tons, the individual tunnel air feed of the rubbish fermentation treatment process before transforming, exhaust system are shown in Fig. 3 and 4, just relative the utility model, original system does not have Fig. 5 and UTILIZATION OF VESIDUAL HEAT IN airduct 5 shown in Figure 6.Original zymotechnique flow process is: domestic refuse raw material → 8 day tunnel thermophilic fermentation → 12 day post curing → 12 days final slaking → composting productions.Because domestic refuse output increases severely day by day, the pressure of waste treatment facility is increasing, the Nangong composting plant is adjusted zymotechnique, also promptly be adjusted into system of the present utility model, make the tunnel thermophilic fermentation heating-up time shorten to 1 day by original 2～3 days, make the compost thermophilic fermentation cycle shorten to 6 days, Nangong composting plant municipal wastes day output can be brought up to 650～700 tons.
Following explanation earlier utilizes the technology of carrying out refuse treatment of Fig. 3 and system shown in Figure 4.
The domestic refuse that enters Nangong is after having loaded fermentation tunnel 7 (hereinafter to be referred as tunnel 7), fermenting process formally begins, during whole fermentation process is logical in the temperature and humidity of heap body and the recirculated air control of the optimal parameters such as content of oxygen be that ratio, the rotation speed of fan of fresh air and recycle gas by adjusting input reaches the material humidification is realized.
Fresh air is the fermentation wind ditch 6 that is incorporated into 7 bottoms, tunnel by air feed house steward 1 and air feed arm 3 by production hall, tunnel, how much controlling of input tunnel 7 fresh airs by the air feed air-valve 10 of adjustment individual tunnel 7 air feed arms 3 and the rotating speed of each blower fan 8, recycle gas is the fermentation wind ditch 6 that is incorporated into 7 bottoms, tunnel by 7 tops, tunnel, what of recycle gas by adjusting single circulation airduct 9 circulation air-valve 11 and the rotating speed of each blower fan 8 control, concrete air feed flow process is shown in the arrow among Fig. 1 and Fig. 3.The gas that the tunnel has fermented and produced, be incorporated into the biological filter by the blower fan at humidification station and discharge by being installed in the vertical pipeline of wall behind the tunnel, what of emission gases by being installed in individual tunnel air draft arm the air-valve opening angle and the rotating speed of humidification station blower fan control.
Preceding 2～3 days of tunnel fermentation are increased logarithmic phases of microorganism.Should spray as requested in this stage and ooze drop liquid and reach necessary water ratio (water ratio reaches 50%-60%), the wind that works of going forward side by side guarantees demand and elevated temperature to oxygen, but need not add fresh air.Subsequently 5 days is the sanitisation process of compost, i.e. the inactivation process of germ and plant seed, and this process is to make temperature approximately remain on the realization of getting off of 55-65 ℃ of state by regulating ventilation condition (amount of total air flow quantity/input fresh air).In this process, target temperature is configured to 60 ℃, owing to the loss of evaporating the moisture content that causes compensates by spraying percolate.At 8 days back 2-4 days stop to add percolate, make the water content of compost less than 45% by air-dry effect.The hot gas that discharge in the tunnel directly is introduced between humidification, and is delivered to the biological filter behind the humidification therefrom.Because the gas temperature that is discharged from is higher, just caused the waste of energy in the middle of invisible.For making full use of this part heat energy, energy-saving and emission-reduction to be fulfilled, decision is incorporated into the hot gas that the tunnel fermentation produces in the tunnel by the air channel.System after transformation is finished is exactly a tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying of the present utility model.
Explanation now utilizes system of the present utility model to carry out the main technique flow process of refuse treatment.
The utility model installs UTILIZATION OF VESIDUAL HEAT IN airduct 5 additional by the air draft house steward 2 at exhaust system, directly the hot gas that other fermentation tunnel 7 is produced is incorporated in the air feed arm 3 that connects blower fan 8, and by the air-valve that is installed on the UTILIZATION OF VESIDUAL HEAT IN airduct 5 air quantity is controlled, as shown in Figure 5 and Figure 6.The thick sheet material of individual tunnel 7 required 3mm is at 14m
2About, need be of a size of be flexible coupling one of 450*450*535.
Be incorporated into a tunnel after just having filled up the storehouse by the high-temperature gas that the tunnel in the air channel, biological filter fermentation is produced.And later whole fermentation process carried out trace analysis, sampling investigation.
By two table contrasts before and after the following UTILIZATION OF VESIDUAL HEAT IN as can be seen: by utilizing hot gas that other tunnels produce pre-intensification origin of heat as the forced ventilation air, reduced the temperature head between ventilating gas and the fermentation cabin charging, obviously shortened the heating-up time (winter is particularly evident) of heap body, the tunnel fermentation calefaction time has been shortened to 1 day by original 2～3 days.
After the tunnel thermophilic fermentation was finished, Nangong had also carried out following the tracks of contrast to post curing in the follow-up fermenting process and final slaking, and main test item has density, water ratio, calcination loss, rotten degree etc.The self-heating ability of compost can illustrate the degree of becoming thoroughly decomposed of compost, and too dried or too wet compost sample can make the measured value of self-heating ability on the low side, causes the estimated value of compost maturity too high.Utilizing " empirical method " to adjust compost sample in the experiment and reach optimum moisture content, empirical method---compost sample is pressed into the fist shape, if there is the globule to expose between referring to, then interpret sample is too wet; If the sample granule does not keep initial fist shape, then interpret sample is too dried; By using very little pressure just can be pressed into the sample granule, then the water ratio of interpret sample is suitable.Will carry out humidification to dry-eye disease too, in the humidification process, water will be incorporated in the compost uniformly and go; To carry out drying to too wet sample.Sample crossed be sieved to below the 10mm, utilize " empirical method " to adjust water ratio, the compost sample of adjusting to optimum moisture content is divided into two portions: a part of sample utilizes standard method to measure its standard aqueous rate, another part sample is full of vacuum flask to bottleneck in a kind of loose impouring mode with compost, on the base angle, shake test container gently, and the closed dial thermometer is placed on below 1/3 of vacuum flask, and at 20 ℃ of following vacuum flask of placing of room temperature, reach the temperature maximum value after common 2～3 days, get the top temperature that records and carry out rotten degree mensuration, decision method is as follows: 20 ℃～30 ℃ is V, 30 ℃～40 ℃ is IV, and 4 ℃～50 ℃ is III, and 50 ℃～60 ℃ is II, 60 ℃～70 ℃ is I, and having only rotten degree is matured compost more than or equal to the compost of IV.By the measurement in laboratory, all test items all meet the claimed range of compost, and the product rotten degree also meets the requirement more than or equal to the IV level.The concrete data that detect are seen following scale:
Experimental data summary sheet before the table 1 tunnel UTILIZATION OF VESIDUAL HEAT IN
Experimental data summary sheet after the table 2 tunnel UTILIZATION OF VESIDUAL HEAT IN
Utilize blower fan to force to introduce the ducted hot blast in biological filter and introduce the full tunnel of filling just, utilize unnecessary heat to promote the heat-up rate in tunnel, this heat recycle is particularly important in the winter time.For Nangong compost fermentation storehouse, can be according to principle of conservation of energy, the ratio in the mixed gas of computation cycles gas in gas blower and the temperature of mixed gas.The heat round-robin principle of following brief description during winter.
If the specific heat of fresh air and recycle gas is respectively c1 and c2, density is respectively ρ 1 and ρ 2, and temperature is respectively t1 and t2, and volume is respectively v1 and v2, oxygen concentration is respectively 21% and 10%, the mixed gas temperature be T (℃), suppose c1=c2 again, ρ 1=ρ 2, t1=5 ℃, t2=55 ℃.
According to formula c
1ρ
1V
1(T-t1)+c
2ρ
2V
2(T-t
2)=0
Have
(formula 1.)
Suppose that mixing air oxygen minimum concentration is controlled to be 18%, according to the oxygen material balance, then has:
v
1·21％+v
2·10％＝(v
1+v
2)·18％
Promptly
(formula 2.)
1. 2. substitution formula of formula can get, mixing air temperature T=18.6 ℃
Hence one can see that, in temperature lower winter, if utilize the pre-intensification origin of heat of recycle gas as the forced ventilation air, its ratio with 0.375: 1 is mixed with fresh air, just can make the mixing air oxygen concentration reach 18%, and the vent air temperature is brought up to 18.6 ℃ by original 5 ℃, reduced the temperature head between ventilating gas and the fermentation cabin charging, help shortening the heating-up time of tunnel fermentation cabin heap body, make the tunnel thermophilic fermentation heating-up time shorten to 1 day by original 2～3 days, remedied the thermal value deficiency of domestic refuse, promote the degraded of rubbish, reduce foul smell directly by the quantity discharged of biological filter, make the compost thermophilic fermentation cycle shorten to 6 days, Nangong composting plant municipal wastes day output can be brought up to 650～700 tons.
Claims (4)
1. tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying, comprise air feed house steward (1), air draft house steward (2), a plurality of air feed arm (3) and a plurality of air draft arm (4), one end of air feed arm (3) is communicated with air feed house steward (1), and the other end is used for being communicated with fermentation wind ditch (6) and carries out air feed; One end of air draft arm (4) is communicated with air draft house steward (2), the other end is used for being communicated with fermentation tunnel (7) and carries out air draft, it is characterized in that, this system also comprises a plurality of UTILIZATION OF VESIDUAL HEAT IN airducts (5), one end of UTILIZATION OF VESIDUAL HEAT IN airduct (5) is communicated with air draft house steward (2), the other end is communicated with air feed arm (3), and UTILIZATION OF VESIDUAL HEAT IN airduct (5) is provided with the UTILIZATION OF VESIDUAL HEAT IN air-valve.
2. tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying according to claim 1, it is characterized in that, this system also comprises a plurality of circulation airducts (9), one end of circulation airduct is communicated with air feed arm (3), the other end is used for being communicated with fermentation tunnel (7) and circulates and use wind, and circulation airduct (9) is provided with circulation air-valve (11).
3. tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying according to claim 1 and 2 is characterized in that air feed arm (3) is connected with blower fan (8), and air feed arm (3) is provided with air feed air-valve (10).
4. tunnel aerobic composting fermentation technology UTILIZATION OF VESIDUAL HEAT IN device for modifying according to claim 1 and 2 is characterized in that, UTILIZATION OF VESIDUAL HEAT IN airduct (5) is flexible coupling with being connected to of air feed arm (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202227512U CN201520727U (en) | 2009-09-22 | 2009-09-22 | Improved tunnel type waste heat utilization device adopting aerobic compost fermentation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202227512U CN201520727U (en) | 2009-09-22 | 2009-09-22 | Improved tunnel type waste heat utilization device adopting aerobic compost fermentation technology |
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| CN201520727U true CN201520727U (en) | 2010-07-07 |
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| CN2009202227512U Expired - Fee Related CN201520727U (en) | 2009-09-22 | 2009-09-22 | Improved tunnel type waste heat utilization device adopting aerobic compost fermentation technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664270A (en) * | 2013-12-17 | 2014-03-26 | 西北农林科技大学 | Full-automatic aerobic composting test equipment |
| CN104663245A (en) * | 2015-02-09 | 2015-06-03 | 高锡刚 | Top air injection type fermentation tunnel |
-
2009
- 2009-09-22 CN CN2009202227512U patent/CN201520727U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664270A (en) * | 2013-12-17 | 2014-03-26 | 西北农林科技大学 | Full-automatic aerobic composting test equipment |
| CN104663245A (en) * | 2015-02-09 | 2015-06-03 | 高锡刚 | Top air injection type fermentation tunnel |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20130922 |