CN105060673A - Sealed low temperature sludge desiccation system - Google Patents

Sealed low temperature sludge desiccation system Download PDF

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Publication number
CN105060673A
CN105060673A CN201510447833.7A CN201510447833A CN105060673A CN 105060673 A CN105060673 A CN 105060673A CN 201510447833 A CN201510447833 A CN 201510447833A CN 105060673 A CN105060673 A CN 105060673A
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CN
China
Prior art keywords
air channel
circulating air
sludge drying
drying chamber
sealing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510447833.7A
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Chinese (zh)
Inventor
曹姝文
谢永新
干仕伟
惠天翔
徐鑫
王志刚
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GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd
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GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd
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Application filed by GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd filed Critical GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd
Priority to CN201510447833.7A priority Critical patent/CN105060673A/en
Publication of CN105060673A publication Critical patent/CN105060673A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a sealed low temperature sludge desiccation system. The system comprises a sludge drying chamber and an enclosed circulating air channel communicated with the sludge drying chamber; a circulating fan is arranged in the enclosed circulating air channel to drive gas to cyclically flow in the enclosed circulating air channel; the enclosed circulating air channel is further connected with a heat pump unit; and the heat pump unit is composed of a compressor, a condenser, aflow controller and an evaporator which form a refrigerant circulation loop, the condenser and the evaporator are arranged in the enclosed circulating air channel so as to respectively realize evaporation heating and condensation dehumidification of the gas. The sealed low temperature sludge desiccation system recovers heat of condensation of steam by using an enclosed dehumidifying and drying manner and a heat pump, does not need additional heating sources like steam for drying, consumes no fuel, is free of discharges of waste gas and waste heat, has substantially reduced operation cost and is more energy-saving, environment-friendlier and safer; and the temperature and humidity of a drying medium can be conveniently controlled and adjusted, and the drying medium is not influenced by the outside and is convenient to use.

Description

A kind of sealed low temperature sludge drying treatment system
Technical field
The present invention relates to sludge treatment device technical field, particularly the sealed low temperature sludge drying treatment system of one.
Background technology
Along with industrial development and growth in the living standard, create increasing sanitary sewage and trade effluent, the mud that these are useless, sewage can produce a large amount of water ratio about 99% after purification of water quality process, becomes the mud that water ratio is about 80 ~ 85% after the device for dehydrating sladge waste dehydration of routine.Along with the increase of sewage load, mud annual production is very fast increase also.According to finding display, the mud that waste water processing station and sewage work produce has nearly 80% not obtain appropriate minimizing and recycling treatment.Mud that is how that output is huge, complicated component carries out minimizing and resource utilization, has become problem anxious to be resolved.The further mummification of mud is a kind of method of very feasible sludge reduction, and this kind of mud after predrainage is dry further by the drying plant of routine, to reach the object of decrement and convenient transport.And the current problem that sludge drying device ubiquity energy consumption is higher, energy utilization rate is lower, further for the mud after this kind of predrainage mummification is not produced again secondary exhaust emission, and how efficiently reduction energy consumption is a technical barrier in field of Environment Protection.
At present for further mummification water ratio 80 ~ 85% the method for mud, the more sludge drying process equipment of domestic and international application is mainly heat drying technology, comprises the processing units such as fluidized-bed mummification, belt-type drying, the mummification of Horizontal revolving disc type, oar blade type mummification, the mummification of vertical disc formula, spraying mummification.Drying process and equipment are while considering technology maturation and investment running cost, need select in conjunction with the requirement of different specific resistance to filtration project, meanwhile, the problems such as the dust produced in mud drying process, foul smell discharge need to increase treatment facility in addition and prevent and treat.
Sludge drying device energy consumption conventional is in the market higher, and generally need use under the condition having waste heat source to heat.If directly use the conventional energy (as Sweet natural gas, coal, steam etc.), processing costs is high, is difficult to remain normal and runs.And sewage work is many without waste heat thermal source, lack the heat that can directly recycle, according to conventional heat drying technology, will drop into a large amount of funds for the construction of thermal source and energy consumption, cost performance is too low.In addition, existing sludge drying technique implements drying and other treatment mainly with single performance equipment, inevitably there is the problem of dust, foul smell discharge, if do not increased process facility for prevention and control in addition, will certainly cause secondary pollution to environment while dewatered sludge.
Summary of the invention
Technical problem to be solved by this invention is to provide the sealed low temperature sludge drying treatment system of a kind of energy-saving and environmental protection, safety.
For solving the problems of the technologies described above adopted technical scheme: a kind of sealed low temperature sludge drying treatment system, the sealing and circulating air channel comprising sludge drying chamber and be connected with sludge drying chamber, recirculation blower is provided with to order about gas at sealing and circulating air channel internal circulation flow in described sealing and circulating air channel, described sealing and circulating air channel is also connected with thermal-pump unit, described thermal-pump unit is by compressor, condenser, current regulator and vaporizer composition are to form refrigerant circulation circuit, described condenser and vaporizer are located in sealing and circulating air channel to carry out evaporation heating and dehumidification by condensation to gas respectively.
Further, described drying sludge indoor are provided with multilayer from the bottom to top in order to carry the conveying belt of mud, each layer described conveying belt staggered arrangement and the throughput direction of adjacent two layers conveying belt is contrary.
Further, the bottom of described sludge drying chamber is provided with the inlet mouth be connected with sealing and circulating air channel, the top of described sludge drying chamber is provided with the air outlet be connected with sealing and circulating air channel, the mud import of described sludge drying chamber is arranged on top and accepts conveying by most top layer conveying belt, and the sludge outlet of described sludge drying chamber is arranged on bottom and is accepted by lowest layer conveying belt and sends.
Beneficial effect: this sealed low temperature sludge drying treatment system is by closed removal moisture drying mode and rely on heat pump to carry out vapor condensation recovery of heat, drying is carried out without the need to additionally adding the external heat sources such as steam, do not need to consume any fuel, also without waste gas waste heat discharge, working cost reduces greatly, its more energy-saving and environmental protection, safety; And the temperature of drying medium, humidity facilitate regulating and controlling, not by ectocine, easy to use.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further;
Fig. 1 is the systematic schematic diagram of the embodiment of the present invention;
Fig. 2 is the structural representation of sludge drying chamber in the embodiment of the present invention.
Embodiment
See figures.1.and.2, a kind of sealed low temperature sludge drying treatment system of the present invention, the sealing and circulating air channel comprising sludge drying chamber 10 and be connected with sludge drying chamber 10, recirculation blower 30 is provided with to order about gas at sealing and circulating air channel internal circulation flow in sealing and circulating air channel, sealing and circulating air channel is also connected with thermal-pump unit 20, thermal-pump unit 20 is by compressor 21, condenser 22, current regulator 23 and vaporizer 24 form to form refrigerant circulation circuit, condenser 22 and vaporizer 24 are located in sealing and circulating air channel to carry out dehumidification by condensation and evaporation heating to gas respectively.
In the present embodiment, municipal wastewater treatment plant or enterprise wastewater station be 80 ~ 85% to water ratio through dehydration mud carries out drying and other treatment by fresh feed pump continus convergence to sludge drying chamber 10, particularly, the mud import 11 of sludge drying chamber 10 is arranged on top, the sludge outlet 12 of sludge drying chamber 10 is arranged on bottom, multilayer conveying belt 13 is provided with from the bottom to top in sludge drying chamber 10, contrary and the head and the tail two ends of every layer of conveying belt 13 of the throughput direction of adjacent two layers conveying belt 13 connect in turn, mud is made to fall by the conveying belt 13 of most top layer the conveying belt 13 being delivered to the lowest layer successively, wet mud enters in sludge drying chamber 10 through mud import 11, carry through each layer conveying belt 13, finally send from sludge outlet 12.Wherein, the inlet mouth 14 that sludge drying chamber 10 is connected with sealing and circulating air channel be arranged on bottom, the air outlet 15 that sludge drying chamber 10 is connected with sealing and circulating air channel is arranged on top.The inlet mouth 14 of dry air bottom sludge drying chamber 10 enters, and directly contacts, carry out drying and dehydrating process with the wet mud on each layer conveying belt 13, and the wet air of formation is discharged from the air outlet 15 at top again.
The principle of work of the present invention's sealed low temperature sludge drying treatment system is as follows: treat that the wet mud of drying and other treatment enters in sludge drying chamber 10 from mud import, recirculation blower 30 runs, and agitates the gas circulating flow in sealing and circulating air channel.Compressor 21 in thermal-pump unit 20 works, refrigerant circulates in refrigerant circulation circuit, in vaporizer 24, draw sludge drying chamber 10 discharge heat in damp-heat air, flash to low-pressure steam from low-pressure liquid working medium, become the steam of High Temperature High Pressure through compressor 21 supercharging; In condenser 22, the working substance steam of High Temperature High Pressure releases the air that heat heating prepares to enter sludge drying chamber 10, and working medium itself then to be congealed into highly pressurised liquid from gas cold; By current regulator 23, liquid working substance produces blocking effect, reduces pressure and temperature, becomes low pressure, low temperature liquid, enter the heat absorbing hot and humid gas in vaporizer 24 once again, so form thermodynamic cycle.The gas put is discharged at sludge drying chamber 10 top, it is the hot and humid gas that moisture content is higher, its relative humidity is 70 ~ 80%, during in sealing and circulating air channel through evaporator 24, because vaporizer 24 surface temperature is lower than air dew point temperature, moisture in gas on vaporizer 24 surface by under moisture condensation, and with outside the state discharge system of liquid water, gas flow condenser 22 at vaporizer 24 place after dehumidification process, in condenser 22 place, the wet heating such as to obtain, improve gas temperature, also reduce relative humidity simultaneously, formation dry gas is delivered in sludge drying chamber 10 again and is carried out drying and other treatment to mud.
Carrying out vapor condensation recovery of heat by closed removal moisture drying mode and dependence heat pump, carrying out drying without the need to additionally adding the external heat sources such as steam, do not need to consume any fuel, also without waste gas waste heat discharge, working cost reduces greatly.Thermal-pump unit 20, as the thermal source of sludge drying, does not need in drying process to consume any fuel, thus while can saving transport and storage of fuels expense, avoids fuel to the pollution of environment.Meanwhile, because dewatered sludge carries out in the environment closed, all generation in drying process have smelly obnoxious flavour to be discharged in fluid form by the condensation of vaporizer, and waste gas can be accomplished not leak, and can reduce to minimum pollution to surrounding environment.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various change can also be made under the prerequisite not departing from present inventive concept.

Claims (3)

1. a sealed low temperature sludge drying treatment system, it is characterized in that: the sealing and circulating air channel comprising sludge drying chamber and be connected with sludge drying chamber, recirculation blower is provided with to order about gas at sealing and circulating air channel internal circulation flow in described sealing and circulating air channel, described sealing and circulating air channel is also connected with thermal-pump unit, described thermal-pump unit is made up of to form refrigerant circulation circuit compressor, condenser, current regulator and vaporizer, and described condenser and vaporizer are located in sealing and circulating air channel to carry out evaporation heating and dehumidification by condensation to gas respectively.
2. sealed low temperature sludge drying treatment system according to claim 1, it is characterized in that: described drying sludge indoor are provided with multilayer from the bottom to top in order to carry the conveying belt of mud, each layer described conveying belt staggered arrangement and the throughput direction of adjacent two layers conveying belt is contrary.
3. sealed low temperature sludge drying treatment system according to claim 2, it is characterized in that: the bottom of described sludge drying chamber is provided with the inlet mouth be connected with sealing and circulating air channel, the top of described sludge drying chamber is provided with the air outlet be connected with sealing and circulating air channel, the mud import of described sludge drying chamber is arranged on top and accepts conveying by most top layer conveying belt, and the sludge outlet of described sludge drying chamber is arranged on bottom and is accepted by lowest layer conveying belt and sends.
CN201510447833.7A 2015-07-27 2015-07-27 Sealed low temperature sludge desiccation system Pending CN105060673A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045275A (en) * 2016-07-21 2016-10-26 黄志荣 Sludge drying system
CN106430901A (en) * 2016-11-21 2017-02-22 武汉都市环保工程技术股份有限公司 Moisture discharge and drying system for sludge
CN106495429A (en) * 2017-01-07 2017-03-15 天津五洲同创空调制冷设备有限公司 A kind of drying sludge air source heat pump system and its sludge drier
CN109205990A (en) * 2018-08-28 2019-01-15 天津五洲同创空调制冷设备有限公司 A kind of steam dehumidifying mud drying device and its control system
CN109626791A (en) * 2019-01-30 2019-04-16 北京中矿环保科技股份有限公司 Sludge drying device and sludge drying method
CN112534199A (en) * 2018-06-29 2021-03-19 索瓦有限公司 Drying apparatus for wet substrates and related drying method for wet substrates

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Publication number Priority date Publication date Assignee Title
FR2904824A1 (en) * 2006-08-08 2008-02-15 Amenagement Urbain & Rural Sanitizing sludge obtained from an urban/industrial waste by an automatized microwave treatment in a purification plant to destroy pathogenic micro-organism, comprises drying the sludge with a low temperature with renewable energy
CN102358678A (en) * 2011-09-20 2012-02-22 合肥学院 Sludge desiccation system
CN202808553U (en) * 2012-07-09 2013-03-20 北大工学院绍兴技术研究院 Comprehensive sludge drying energy utilization system employing industrial waste gas
CN202881067U (en) * 2012-06-13 2013-04-17 中国科学院理化技术研究所 Solar heat pump united sludge drying system
CN203487024U (en) * 2013-09-17 2014-03-19 广州市环境保护工程设计院有限公司 Heat pump low temperature sludge drying treatment system
CN103708690A (en) * 2013-12-20 2014-04-09 常州市新港热电有限公司 Sludge treatment device
CN103771680A (en) * 2014-01-08 2014-05-07 同济大学 Sequencing batch waste heat recovery vacuum drying device
CN203794763U (en) * 2014-02-19 2014-08-27 广州新滔水质净化有限公司 Solar sludge drying combination system
CN104129896A (en) * 2014-07-25 2014-11-05 华南理工大学 Heat-pump drying device of sludge
CN104230138A (en) * 2014-07-11 2014-12-24 浙江三联环保机械设备有限公司 Belt type sludge dryer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2904824A1 (en) * 2006-08-08 2008-02-15 Amenagement Urbain & Rural Sanitizing sludge obtained from an urban/industrial waste by an automatized microwave treatment in a purification plant to destroy pathogenic micro-organism, comprises drying the sludge with a low temperature with renewable energy
CN102358678A (en) * 2011-09-20 2012-02-22 合肥学院 Sludge desiccation system
CN202881067U (en) * 2012-06-13 2013-04-17 中国科学院理化技术研究所 Solar heat pump united sludge drying system
CN202808553U (en) * 2012-07-09 2013-03-20 北大工学院绍兴技术研究院 Comprehensive sludge drying energy utilization system employing industrial waste gas
CN203487024U (en) * 2013-09-17 2014-03-19 广州市环境保护工程设计院有限公司 Heat pump low temperature sludge drying treatment system
CN103708690A (en) * 2013-12-20 2014-04-09 常州市新港热电有限公司 Sludge treatment device
CN103771680A (en) * 2014-01-08 2014-05-07 同济大学 Sequencing batch waste heat recovery vacuum drying device
CN203794763U (en) * 2014-02-19 2014-08-27 广州新滔水质净化有限公司 Solar sludge drying combination system
CN104230138A (en) * 2014-07-11 2014-12-24 浙江三联环保机械设备有限公司 Belt type sludge dryer
CN104129896A (en) * 2014-07-25 2014-11-05 华南理工大学 Heat-pump drying device of sludge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045275A (en) * 2016-07-21 2016-10-26 黄志荣 Sludge drying system
CN106430901A (en) * 2016-11-21 2017-02-22 武汉都市环保工程技术股份有限公司 Moisture discharge and drying system for sludge
CN106495429A (en) * 2017-01-07 2017-03-15 天津五洲同创空调制冷设备有限公司 A kind of drying sludge air source heat pump system and its sludge drier
CN106495429B (en) * 2017-01-07 2019-11-12 天津五洲同创空调制冷设备有限公司 A kind of drying sludge air source heat pump system and its sludge drier
CN112534199A (en) * 2018-06-29 2021-03-19 索瓦有限公司 Drying apparatus for wet substrates and related drying method for wet substrates
CN109205990A (en) * 2018-08-28 2019-01-15 天津五洲同创空调制冷设备有限公司 A kind of steam dehumidifying mud drying device and its control system
CN109626791A (en) * 2019-01-30 2019-04-16 北京中矿环保科技股份有限公司 Sludge drying device and sludge drying method

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Application publication date: 20151118