CN100559103C - Solar energy, high-temperature double heat source heat pump sludge dry system - Google Patents

Solar energy, high-temperature double heat source heat pump sludge dry system Download PDF

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Publication number
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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China
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heat pump
air
drying machine
solar energy
drying
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CNB2007100200578A
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Chinese (zh)
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CN101240976A (en
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王明根
袁福平
田正祥
方跃飞
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王明根
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Abstract

The present invention relates to a kind of drying device of moist material.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 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, its gas outlet 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 its air inlet 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.The present invention has saved energy resource consumption greatly, and the mud after the mummification has been realized stabilisation, minimizing, innoxious, resource, automaticity height of the present invention, and energy resource consumption is few, and treatment effect is good.

Description

Solar energy, high-temperature double heat source heat pump sludge dry system

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.
CNB2007100200578A 2007-02-09 2007-02-09 Solar energy, high-temperature double heat source heat pump sludge dry system CN100559103C (en)

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CN100559103C true CN100559103C (en) 2009-11-11

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Cited By (1)

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CN101936644B (en) * 2009-09-30 2012-04-11 湖南省浏阳市择明热工器材有限公司 Hot air drying system heated by double energy sources
CN101781077A (en) * 2010-02-11 2010-07-21 东华大学 System for vacuum drying sludge by adopting solar energy
CN101786784B (en) * 2010-03-26 2012-03-28 广州新滔水质净化有限公司 Solar energy and recycled water dual-heat-resource heat pump sludge drying system
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CN102358678B (en) * 2011-09-20 2013-09-04 合肥学院 Sludge desiccation system
CN102336508B (en) * 2011-10-18 2014-09-17 东莞市高能磁电技术有限公司 Method and system for quickly dehydrating and recycling municipal sewage sludge
CN102538399A (en) * 2012-02-29 2012-07-04 绵阳师范学院 Drying equipment for Chinese herbal medicine
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CN103265158B (en) * 2013-05-23 2014-07-02 南京师范大学 Method for dehumidifying and drying sludge by use of solar energy-heat pump coupling solution
CN103575066B (en) * 2013-11-21 2015-05-13 河南理工大学 Method and device for material drying by means of porous media
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CN110906698B (en) * 2019-11-27 2020-09-08 中国农业科学院烟草研究所 Intelligent temperature and humidity control method for tobacco curing barn with closed circulation heat pump
CN111023747A (en) * 2019-12-27 2020-04-17 安徽麦稻之星机械科技有限公司 Solar heat pump dryer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102767937A (en) * 2011-05-04 2012-11-07 中国科学院理化技术研究所 Greenhouse-type solar heat pump combination drying device and method thereof
CN102767937B (en) * 2011-05-04 2015-04-15 中国科学院理化技术研究所 Greenhouse-type solar heat pump combination drying device and method thereof

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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

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

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