CN100559103C - Solar energy and high-temperature double-heat-source heat pump sludge drying system - Google Patents
Solar energy and high-temperature double-heat-source heat pump sludge drying system Download PDFInfo
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- CN100559103C CN100559103C CNB2007100200578A CN200710020057A CN100559103C CN 100559103 C CN100559103 C CN 100559103C CN B2007100200578 A CNB2007100200578 A CN B2007100200578A CN 200710020057 A CN200710020057 A CN 200710020057A CN 100559103 C CN100559103 C CN 100559103C
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- 238000001035 drying Methods 0.000 title claims abstract description 63
- 239000010802 sludge Substances 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000009818 secondary granulation Methods 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 239000008187 granular material Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
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- 239000003337 fertilizer Substances 0.000 description 1
- 238000005111 flow chemistry technique Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
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- 239000002918 waste heat Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a drying device for wet materials. The drying machine is internally provided with a multi-layer belt type conveying device, an air channel and an air inlet and outlet channel connected with the heat pump, a wet material feeding device is arranged on a feed inlet of the drying machine, a discharge port outputs dry materials, the drying machine is provided with a solar air heat collector, and an auxiliary air inlet is arranged on the heat pump; the solar air heat collector is provided with a fan, an air outlet of the fan is respectively connected with an auxiliary air inlet of the heat pump and an air inlet channel between the dryer and the heat pump through a pipeline provided with a valve, and an air inlet of the fan is respectively connected with an air outlet channel between the dryer and the heat pump and the outside through a pipeline provided with a valve. The invention greatly saves energy consumption, and the dried sludge realizes stabilization, reduction, harmlessness and recycling.
Description
Technical field
The present invention relates to a kind of drying device of moist material, relate in particular to the process equipment of a kind of energy dry moist mud in enormous quantities.
Background technology
At present, sludge drying has become an important means of Treatment of Sludge, has obtained comprising the attention of environmental project circle of developing country.Existing drying sludge mode mainly adopts mechanical drying, mainly contains types such as Flash Type, diaphragm type, atomizing, multiple-effect evaporation formula.Its know-why is hot conduction, thermal convection current and heat radiation.But utilize these technology dewatered sludges will consume a large amount of energy,, therefore the Treatment of Sludge cost is improved greatly in order to ensure the security performance that anhydration system moves and do not produce secondary pollution also to have complete equipment to do reliable assurance.Owing to the one-time investment of sludge drying and operating cost height make a lot of municipal sewage plants " hope and draw back ", seriously hindered the process that the small and medium cities sludge of sewage treatment plant is handled.At present a lot of small and medium cities sewage treatment plants " mud is completely for suffering from " have caused secondary pollution to environment.
Summary of the invention
The invention provides a kind of solar energy that utilizes as auxiliary thermal source, and be combined with solar energy, the high-temperature double heat source heat pump sludge dry system of big flow processing treatment facility.
Technical scheme of the present invention is: it comprises a drying machine and heat pump, be provided with the turnover air channel of multilayer belt conveyer, air channel and connection heat pump in the drying machine, the charging aperture of drying machine is provided with moist material feed arrangement, discharging opening output dried material, this drying system also is provided with solar energy air heat collector, is provided with auxilairy air intake on heat pump; Solar energy air heat collector is provided with blower fan, the gas outlet of the described solar energy air heat collector auxilairy air intake, drying machine of the pipeline by being provided with valve and heat pump respectively links to each other with air inlet duct between the heat pump, and the air inlet of described blower fan is exhaust passage, extraneous the linking to each other between the pipeline by being provided with valve and drying machine and the heat pump respectively.
It also is provided with controller, is provided with temperature, air quantity inductor in each pipeline, and the valve on described each pipeline is a magnetic valve, and each temperature inductor, air quantity inductor, magnetic valve connect controller respectively.
The moist material feed arrangement of the charging aperture of drying machine comprises material conveyer belt, mixing conveying all-in-one, the comminutor that connects successively.
Described comminutor is the secondary granulation machine.
The present invention has changed the pattern that original technology is used the dry moist material of single source, has increased the auxiliary thermal source of solar energy air heat collector as heat pump in system, has saved energy resource consumption greatly.Adopted ripe dry technology " mud mixing granulation drying system " to guarantee the processing disposal ability of system, and made the mud after the processing have secondary use value.Mud after the mummification has been realized stabilisation, minimizing, innoxious, resource.The controller that is provided with in system, inductor and magnetic valve can make system realize automation mechanized operation according to environmental aspect, can regulate whether start heat pump according to environment temperature, because can satisfy the processing needs in the temperature of south solar energy in summer.Automaticity height of the present invention, energy resource consumption is few, and treatment effect is good.
Description of drawings
Fig. 1 is a system of the present invention organigram
1 is discharging opening among the figure, the 2nd, and drying machine, the 3rd, the secondary granulation machine, the 4th, mix defeated material all-in-one, the 5th, heat pump, the 6th, solar thermal collector, the 7th, blower fan.
Fig. 2 is a fundamental diagram of the present invention
The specific embodiment
As Fig. 1, the present invention includes a drying machine 2 and heat pump 5, be provided with the turnover air channel of multilayer belt conveyer, air channel and connection heat pump 5 in the drying machine 2, the charging aperture of drying machine 2 is provided with moist material feed arrangement, discharging opening 1 output dried material, it is provided with solar energy air heat collector 6, is provided with auxilairy air intake on heat pump 5; Solar energy air heat collector 6 is provided with blower fan 7, its gas outlet auxilairy air intake, drying machine 2 of the pipeline by being provided with valve and heat pump 5 respectively links to each other with air inlet duct between the heat pump 5, and its air inlet is exhaust passage, extraneous the linking to each other between the pipeline by being provided with valve and drying machine 2 and the heat pump 5 respectively.
The present invention also is provided with controller, is provided with temperature, air quantity inductor in each pipeline, and the valve on each pipeline is a magnetic valve, and each temperature, air quantity inductor, magnetic valve connect controller respectively.
The moist material feed arrangement of the charging aperture of drying machine 2 comprises material conveyer belt, secondary granulation machine 3, the mixing conveying all-in-one 4 that connects successively.
As Fig. 2, operation principle of the present invention is:
1. mud carries out mechanical dehydration in dewaterer, and the dehydrated sludge moisture content is about 80%, delivers to constant feeder through Shaftless screw conveyor, carries out dosing.
2. respectively the mud of moisture content 80% and moisture content 10% is delivered to respectively to mix with belt conveyor I, II by two cover constant feeders and do the mud that wets in the defeated material all-in-one 4 and mix.(purpose of doing like this is the gluing characteristic that produces in dry run for fear of mud, makes it not produce to stick when drying to harden, and does not saturating phenomenon, has also expanded the fluctuation range of admissible wet mud water capacity simultaneously.)
3. wet mud and 50% (moisture content 10%) dewatered sludge that mixes in the defeated material all-in-one 4 50% (moisture content 80%) at mud mixes mixed moisture percentage in sewage sludge≤50%.
4. mixing sludge flow to vertical secondary granulation machine 3 and carries out granulation, and comminutor is the granulation of II level, and particle diameter is 3mm, uniform particles and solid, yield rate＞98%.
5. continous way is organized stainless steel guipure drying machine 2 more, is the rectangle body of sealing, length * wide * height=5.3m * 1.5m * 3m.In establish three groups of stainless steel porous ribbon conveyers, short transverse distributes up and down, and is end to end, effective drying surface 15.6m
2Granular sludge is distributed on the stainless steel guipure by rotatory feeder valve and distributing device, and line speed and cloth mud thickness can be adjusted (when hot blast temperature changes in the machine, will adjust the speed of service of guipure automatically, guarantee the final moisture content of granule sludge) automatically.Conveyer granule sludge transport back and forth, the overturn moisture of evaporation mud granule according to the speed band of setting, and drying machine 2 is handled sludge quantity 250kg/h, and material is time of staying 1h in drying machine 2, the dry tenacity of drying machine 2 (2.5kg H
2The O/hm bandwidth.Hot blast temperature is 80 ℃ in the drying machine 2, has disposed good hot air circulating system in the drying machine 2.Hot blast to conveyer belt circulation air-supply, carries out mummification to granule sludge through blower fan, and the granule sludge that reaches moisture content≤10% is at last sent drying machine 2 through changeover valve.The hot and humid gas of moisture is discharged through air-introduced machine and is delivered to the dust arrester dedusting in the absorbing particles mud, delivers to heat pump 5 dehumidifying then.
6. heat pump 5, are made up of compressor, condenser, throttling arrangement and evaporimeter.Wherein the working medium of Liu Donging has absorbed the heat in the hot and humid gas of discharging in the drying machine 2 in evaporimeter, flashes to low-pressure steam from low-pressure liquid working medium, and compressed machine supercharging becomes the steam of HTHP; In condenser, the working medium of HTHP discharges the dry gas behind the heat heating and dehumidification, and itself then becomes high-pressure liquid from condensation of gas working medium, by throttling arrangement high-pressure liquid working medium has been produced blocking effect, reduce pressure, so then formed the circulation that heat pump heats dehumidifying repeatedly.
The gas that drying machine 2 is discharged is to contain the very high hot and humid gas of moisture, and its relative humidity is about 75 ~ 80%, when entering the dehumidifying evaporimeter of heat pump 5, because the evaporator surface temperature is lower than the gas dew point temperature, at evaporator surface with under the water condensation, outside the state discharge system with aqueous water.Warm gas relative temperature is descended, become and enter heat pump 5 gain of heat behind the dry gas and provide heat for sludge drying, gas for constant enthalpy heats temperature-fall period, is the process that heats that dehumidifies heat pump 5 in drying machine 2 in, heat pump 5 discharge hot blast temperature 〉=90 ℃.This system has adopted well behaved high temperature symplasm and energy-efficient dehumidifying heating machine set, heating efficiency COP＞4 of heat pump 5.Heat pump 5 is except that self circulating dehumidification heats, and can be from different thermal source heat-obtainings, when solar thermal collector 6 hot blast temperatures satisfy in the drying machine 2 temperature, by solar thermal collector 6 air heatings, in the time can not satisfying drying machine 2 temperature, solar thermal collector 6 hot blasts are as the low-phase energy of heat pump 5, but cold season also electricity consumption or other waste heat add the low-phase energy of hot-air as heat pump 5, the energy conversion of heat pump 5 all is that automation is finished.
7. flat-plate solar heat collector 6
The thermal source of drying sludge is formed heating system by heat pump 5, solar thermal collector 6, and heat pump 5 is the key equipments in the heating system.Solar thermal collector 6 is the auxiliary equipment in the heating system, steam compression heat pump 5 is when winter temperature is very low, the efficient of heat pump 5 systems is low, and solar thermal collector 6 collecting efficiency when low temperature is higher, and heat pump combines this problem that effectively solved with solar thermal collection system.The utilization of solar energy has improved dry energy-saving benefit, has reduced drying cost.Solar thermal collector 6 is plate, pin-connected panel air collector, total daylighting area 130m
2Solar energy air heat collector 6 energy effective collection solar radiant energies also are converted to solar energy, and air heat to uniform temperature, is delivered to drying machine 2 or heat pump 5 through pipeline.Solar energy heat distribution system is by solar thermal collector 6, blower fan 7, and air intake, exhaust valve and pipeline are formed, and heat collector is taked arranged in arrays, and heat collector, absorber plate are the web plate type.Air flow channel is reasonable in design, and the heat-insulation layer high insulating effect guarantees that the radiant energy of the sun farthest is converted to the calorific potential of air, and the collecting efficiency of plate solar collector reaches 60%.
In sum, energy consumption cost of the present invention is low, and heat pump 5 can reclaim sensible heat and the latent heat in the warm air, and energy has obtained abundant reasonable use, is a kind of generally acknowledged energy-efficient equipment, and solar energy and heat pump united work have further reduced energy consumption.Free from environmental pollution, solar energy is green energy resource, the overall process of solar heat pump dewatered sludge is a closed system, do not need to discharge wet the branch, simultaneously can not discharge harmful foul smell yet, the mud of moisture content 10% has become the particle (can directly do commodity selling or utilization) of no stink after the mummification, does not pollute the environment.The sludge drying quality is good, and the solar heat pump drying system sludge-drying is that the space circulation of sealing is carried out, and is not subjected to the influence of extraneous weather conditions, and all even runnings under identical conditions throughout the year are so dry mass is stable.Mud is the colloidal solid micelle that utilizes the flocculant post precipitation to squeeze out, the constituent structure complexity, water absorbing force is strong, the mummification temperature of drying machine all can be regulated, and can control the speed of conveyer belt, and having satisfied the ideal conditions of sludge drying, dry finished product moisture content is even, can keep the organic principle (do not exceed standard to make fertilizer as heavy metal) in the granule sludge again, help recycling sludge.Security is good, owing to adopt polytape machine formula drying machine, the speed of service is low, operates steadily in drying for mud granule, can not make the mutual frictional impact of mud granule and produces dust, and reasonably the hot blast configuration can airborne dust yet.Dry indoor temperature＜80 ℃ is low temperature drying, mud granule can be in dry run because overheated and spontaneous combustion has been avoided in the conventional sludge drying because the hidden danger that dust accumulation and mud spontaneous combustion produce.Compact conformation, floor space are little, the automaticity height, and whole drying process can be full-automatic, and semi-automatic or manual configuration is to meet the needs of different users.Of many uses, the present invention can also be used in the drying of the agricultural product and the raw material of industry except that being used for drying sludge.
Claims (4)
1, solar energy, high-temperature double heat source heat pump sludge dry system, it comprises a drying machine and heat pump, be provided with the turnover air channel of multilayer belt conveyer, air channel and connection heat pump in the drying machine, the charging aperture of drying machine is provided with moist material feed arrangement, discharging opening output dried material, it is characterized in that this drying system also is provided with solar energy air heat collector, on heat pump, be provided with auxilairy air intake; Solar energy air heat collector is provided with blower fan, the gas outlet of the described solar energy air heat collector auxilairy air intake, drying machine of the pipeline by being provided with valve and heat pump respectively links to each other with air inlet duct between the heat pump, and the air inlet of described blower fan is exhaust passage, extraneous the linking to each other between the pipeline by being provided with valve and drying machine and the heat pump respectively.
2, solar energy according to claim 1, high-temperature double heat source heat pump sludge dry system, it is characterized in that, it also is provided with controller, be provided with temperature, air quantity inductor in each pipeline, valve on described each pipeline is a magnetic valve, and each temperature inductor, air quantity inductor, magnetic valve connect controller respectively.
3, solar energy according to claim 1, high-temperature double heat source heat pump sludge dry system is characterized in that, the moist material feed arrangement of the charging aperture of drying machine comprises material conveyer belt, mixing conveying all-in-one, the comminutor that connects successively.
4, solar energy according to claim 3, high-temperature double heat source heat pump drying system is characterized in that, described comminutor is the secondary granulation machine.
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| CNB2007100200578A CN100559103C (en) | 2007-02-09 | 2007-02-09 | Solar energy and high-temperature double-heat-source heat pump sludge drying system |
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| CNB2007100200578A CN100559103C (en) | 2007-02-09 | 2007-02-09 | Solar energy and high-temperature double-heat-source heat pump sludge drying system |
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| CN100559103C true CN100559103C (en) | 2009-11-11 |
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| CN101240976A (en) | 2008-08-13 |
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Application publication date: 20080813 Assignee: Jiangsu Tianyu Environmental Protection Group Co., Ltd. Assignor: Wang Minggen Contract record no.: 2010320000158 Denomination of invention: Solar energy, high-temperature double heat source heat pump sludge dry system Granted publication date: 20091111 License type: Exclusive License Record date: 20100303 |
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Effective date of registration: 20200525 Address after: 225200 Binhu Industrial Park, Zhenwu Town, Jiangdu District, Yangzhou City, Jiangsu Province Patentee after: JIANGSU TIANYU ENVIRONMENTAL PROTECTION GROUP Co.,Ltd. Address before: 225268 Jiangsu Province Jiangdu Zhenwu town Binhu Yangzhou Tianyu group Patentee before: Wang Minggen |