CN101628780A - Sludge drying system and sludge drying process - Google Patents
Sludge drying system and sludge drying process Download PDFInfo
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- CN101628780A CN101628780A CN200910183107A CN200910183107A CN101628780A CN 101628780 A CN101628780 A CN 101628780A CN 200910183107 A CN200910183107 A CN 200910183107A CN 200910183107 A CN200910183107 A CN 200910183107A CN 101628780 A CN101628780 A CN 101628780A
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- 239000010802 sludge Substances 0.000 title claims abstract description 67
- 238000001035 drying Methods 0.000 title claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 238000005338 heat storage Methods 0.000 claims description 14
- 238000013022 venting Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 6
- 230000001877 deodorizing effect Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
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- 239000003895 organic fertilizer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a sludge drying system and a sludge drying process, wherein the sludge drying system comprises a mixing and stirring device, a dryer, a multifunctional solar house, a solar air heat collector, a hot dry sludge warehouse, a deodorizing device, and an auxiliary heat source; the sludge dying process comprises the following steps: wet sludge is placed in the mixing and stirring device for stirring; the evenly stirred sludge is discharged out of an outlet of the mixing and stirring device and is thrown into the dryer by a sludge conveying belt from an inlet of the dryer; meanwhile, hot air generated by the solar air heat collector is led into the dryer from an air outlet of the solar air heat collector by a fan in the solar air heat collector for firstly dewatering and drying the wet sludge; and the sludge is discharged out of an sludge outlet of the dryer and is sent into the functional solar house by the sludge conveying belt for secondly piling and drying; the final sludge products are stored in the hot dry sludge warehouse; exhaust generated in the whole process can be deodorized by the deodorizing device connected with the mixing and stirring device, the dryer, the functional solar house and the hot dry sludge warehouse.
Description
Technical field
The present invention relates to a kind of sludge drying system and technology, adopted the two-phase method sludge drying technology in solar energy air heat collector and multifuctional solar room, relate to environmental protection field and sludge drying technology.
Background technology
Along with the development of urban economy and the increase of population, China's water pollutes serious day by day, and the construction municipal sewage plant has become improvement water and polluted indispensable behave.According to the file of issue State Council in November, 2000, by 2010, all wastewater treatment rates of establishing the city, city of China should be not less than 60%, and the wastewater treatment rate of municipality directly under the Central Government, provincial capital, municipalities and cities with independent plans and emphasis scenic tourist city is not less than 70%.Continue to build energetically, extend the inexorable trend that sewage work has become social development.
Yet with the sewage disposal cause extremely incompatible be that the municipal sludge that wastewater treatment in China produces but fails properly to be disposed always.Current domestic sludge disposal is just at the early-stage, the ultimate disposal of mud does not also have unified pattern, the various places basis is practical situation separately, the approach of decision sludge ultimate disposal, overwhelming majority cities still select mud to throw aside or the method for landfill, have only only a few, select digestion compost or mummification comprehensive utilization.In general, the random approach of mainly dissolving that is still mud of throwing aside.Follow both at home and abroad minimizing, stabilization, principle innoxious and resource utilization substantially and carry out sludge disposal, although the discussion of relevant different sludge disposal routes is also actively being carried out, but mud decrement is major technology means and trend, and the research of sludge drying and comprehensive utilization is popular.
Sludge disposal is the process of a high energy consumption, high investment, and Just because of this, the municipal sludge of China can not get effective processing for a long time.Processing cost is higher to be still the important factor that the mud problem is properly settled in restriction in China, and wherein the water ratio height is the difficult point that sludge treatment is disposed.
Summary of the invention
1, technical problem to be solved:
The invention provides a kind of save energy at above deficiency, improve a kind of sludge drying technology of sludge drying rate and environmental protection.
2, technical scheme
System of the present invention comprises mixed stirring device, moisture eliminator, multifuctional solar room, solar energy air heat collector, hot dried mud warehouse, odor removal, auxiliary thermal source; Wet mud is put into mixed stirring device and is stirred; The mud that stirs is discharged by the outlet of mixed stirring device, by the mud travelling belt mud is dropped in the moisture eliminator by the mud of moisture eliminator inlet, the warm air that produces of solar energy air heat collector feeds moisture eliminator by the blower fan in the solar energy air heat collector by the air outlet of solar energy air heat collector wet mud is carried out the first step dehydration and drying simultaneously; Above-mentioned mud is discharged by the moisture eliminator sludge outlet, and sends into by the mud travelling belt and to carry out for second step in the multifuctional solar room and pile up mummification; Last sludge product is deposited in the hot dried mud warehouse; The waste gas that produces in the whole process all can carry out foul smell by the odor removal that links to each other with mixed stirring device, moisture eliminator, multifuctional solar room, hot dried mud warehouse to be handled.
This system also has the electric energy auxiliary thermal source, and the electric energy auxiliary thermal source is connected with moisture eliminator or multifuctional solar room.
Described moisture eliminator comprises mud inlet 1, cavity 2, venting port 3, sludge outlet 4, wind-distributing pipe 5, hot air inlet 6 and explosion-proof equipment 7; Sludge outlet 4 is located at the outer middle side part of cavity 2 and hot air inlet 6; Mud inlet 1 is positioned at cavity 2 top covers near hot air inlet 6 one sides; Venting port 3 is positioned at the top cover of cavity 2 near sludge outlet 4 one sides; Hot air inlet 6 is positioned at cavity 2 one side middle and upper parts, 6 one-tenth downward-sloping shapes of hot air inlet, and the angle of inclination is 45 °; Explosion-proof equipment 7 is positioned at cavity 2 top covers near venting port one side.
Described solar energy air heat collector comprises blast inlet 1, has the transparent cover plate 2 of honeycomb structure, vacuum heat collection pipe 3, trapezoidal absorber plate 4, rectangle support 5, cylindrical heat storage can 6, outer thermal insulation layer 7, blower fan 8, second are imitated heating unit blast inlet 10, first and imitated heating unit air outlet 11, rectangular metal cavity 12, air outlet 13; The outer insulation construction 7 of system is made of adiabatic resin board; Select the up and down cover plate of sunlight board for use as transparent honeycomb structure 2; Adopt the vacuum interlayer structure with vacuum heat collection pipe 3, skin is the high-boron-silicon glass pipe, the internal layer endothermic tube scribbles the copper tube of coating for selective absorption for the surface, one end is inserted on the adiabatic resin board and links to each other with inlet of cold air, and the other end is inserted on the rectangle support 5 and links to each other with the first effect heating unit air outlet 11; Trapezoidal absorber plate 4 is fixed by rivet 9, the material selection galvanized sheet of trapezoidal absorber plate 4, and its sunny slope is coated with solar selective coat; Trapezoidal absorber plate 4, rectangular metal cavity 12, whole solar energy air heat collector is divided into three enclosed passages, the topmost enclosed passage is to have the transparent cover plate 2 of honeycomb structure and the enclosed passage between the trapezoidal absorber plate 4, the intermediary enclosed passage is the enclosed passage between trapezoidal absorber plate 4 and the rectangular metal cavity 12, the foot enclosed passage is the heat accumulation passage of rectangular metal cavity 12 inside, and the ratio of three channel thickness of upper, middle and lower is 2: 1: 2; The cylindrical heat storage can 6 that the low temperature heat accumulating is housed is placed side by side between the base plate of rectangular metal cavity 12 and outer thermal insulation layer 7; Connect by fin with holes between the cylindrical heat storage can 6; Heat accumulating is encapsulated in the cylindrical heat storage can 6 main; Air outlet 13 goes out to be placed with blower fan 8; The low temperature heat accumulating is selected paraffin or sal glauberi for use.
The technological process of described a kind of sludge drying system is characterized in that: may further comprise the steps:
(1) mud that will wet is put into mixed stirring device, tentatively stirs.
(2) in mixed stirring device, spray into sterilant, mix stirring simultaneously.
(3) mud of handling in (2) is dropped in the moisture eliminator, the warm air that utilizes solar energy air heat collector to produce carries out the first step mummification to mud.
(4) mud after the first step mummification is dropped in the multifuctional solar room, carry out the second step mummification.
(5) sludge product with mummification drops in the hot dried mud warehouse.
(6) mud in the dried mud warehouse of heat is back to mixed stirring device in the ratio of 5%-20%.
Churning time in the step (1) is 3-5 minute.
The waste gas that produces in the above-mentioned steps all feeds odor removal and carries out the foul smell processing.
3, beneficial effect
(1) utilize solar energy air heat collector and multifuctional solar room that municipal sludge is carried out staging treating, the mud use different device to the different water cut rate improves sludge drying efficient, save energy.
(2) mud of processing water ratio 30%-50% belongs to the high energy consumption interval, utilizes solar house can solve this interval high energy consumption problem, reaches the purpose of save energy.
(3) also be provided with auxiliary thermal sources such as electric energy among the present invention.Can utilize auxiliary thermal sources such as electricity to carry out work when weather condition is unfavorable.
Make work continuous, improve sludge drying efficient.
(4) antiknock device is housed in moisture eliminator, the factor that sets off an explosion is easily monitored in real time, ensure that moisture eliminator can safe operation.
(5) the present invention also adopts hot dried mud back-mixing technology, and the dried mud of water ratio 25%-35% heat is turned back to mixed stirring device, and these dry granulars allow wet mud be wrapped in the surface as pearl nucleus.Can directly reduce the water ratio of wet mud on the one hand, help sludge water content evaporation in the moisture eliminator on the other hand.To sum up can solve the problem that the gluing phase stage water ratio of mud is difficult to handle, improve sludge drying efficient.
(6) this invention also is provided with odor removal.The foul smell that mixed stirring device, moisture eliminator, multifuctional solar house property are given birth to all can feed in the odor removal, and environment does not exert an influence to external world, the protection environment.
(7) water ratio of sludge product of the present invention reaches 25%-35%, and purposes is wide, can directly be used as biological organic fertilizer, and afforestation also can be used as Power Plant Fuel, landfill soil etc. with soil.
Description of drawings
Fig. 1 is a schema of the present invention;
Fig. 2-1 is the dryer configuration synoptic diagram;
Fig. 2-2 is the A-A sectional view of moisture eliminator;
Fig. 3-1 is the solar energy air heat collector structural representation;
Fig. 3-2 is the B-B sectional view of solar energy air heat collector.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.
Technological process of the present invention as shown in Figure 1, it follows these steps to carry out:
(7) mud that will wet is put into mixed stirring device, tentatively stirs.
(8) in mixed stirring device, spray into sterilant, mix stirring simultaneously.
(9) mud of handling in (2) is dropped in the moisture eliminator, the warm air that utilizes solar energy air heat collector to produce carries out the first step mummification to mud.
(10) mud after the first step mummification is dropped in the multifuctional solar room, carry out the second step mummification.
(11) sludge product with mummification drops in the hot dried mud warehouse.
(12) mud in the dried mud warehouse of heat is back to mixed stirring device in the ratio of 5%-20%.
The foul smell that produces in the said process all can feed odor removal; Moisture eliminator is that the warm air that utilizes solar energy air heat collector to produce carries out sludge drying, and warm air also can further be sterilized simultaneously; This technology also has auxiliary thermal sources such as electric energy in addition, and auxiliary thermal sources such as electric energy are connected with moisture eliminator or multifuctional solar room, can enable aforesaid device when weather condition is unfavorable.
Moisture percentage in sewage sludge through the first step mummification in the above-mentioned steps (3) is 50%-60%.
Moisture percentage in sewage sludge through the second step mummification in the above-mentioned steps (4) is 25%-35%.
The hot air temperature that above-mentioned solar energy air heat collector produces is 80-100 degree centigrade.
System of the present invention comprises mixed stirring device, moisture eliminator, multifuctional solar room, solar energy air heat collector, hot dried mud warehouse, odor removal, auxiliary thermal source.
Device among the present invention is preferably:
Mixed stirring device is that Shanghai rises the LHY-2 type helical ribbon agitator that upright mechanical company limited produces;
Explosion-proof equipment is the explosion-proof loud speaker of FBY-1 type that Qidong permanent auspicious explosion-proof communication Electrical Appliances Co., Ltd produces;
Solar house is the multifuctional solar room that Beijing China light sun filter plant factory builds;
Odor removal is the PHOENIX Compact-waste gas cleaning system that Zhenjiang Tongsheng Environmental Protection Equipment Engineering Co.Ltd produces;
The electric energy auxiliary thermal source is that changzhou city sky reaches the KDRK-30 type electric airheater that power equipment company limited produces;
In technological process, can select other types according to practical situation.
To Fig. 2-2, moisture eliminator comprises mud inlet 1, cavity 2, venting port 3, sludge outlet 4, wind-distributing pipe 5, hot air inlet 6 and explosion-proof equipment 7 as Fig. 2-1.
Described sludge outlet 4 is located at the outer middle side part of cavity 2 and hot air inlet 6.Described mud inlet 1 is positioned at cavity 2 top covers near hot air inlet 6 one sides.Described venting port 3 is positioned at the top cover of cavity 2 near sludge outlet 4 one sides.Described hot air inlet 6 is positioned at cavity 2 one side middle and upper parts, 6 one-tenth downward-sloping shapes of hot air inlet, and the angle of inclination is 45 °.Described explosion-proof equipment 7 is positioned at cavity 2 top covers near venting port one side.
Wet mud is added by mud inlet 1, feeds warm air by hot air inlet 6 simultaneously.The inlet of warm air becomes skewed, and the angle of inclination is 45 °.Warm air is in spurting into cavity 2.The warm air of doing can be taken away the moisture in the wet mud, is discharged by venting port 3.Resulting dewatered sludge is discharged by sludge outlet 4.
To Fig. 3-2, solar energy air heat collector comprises blast inlet 1, has the transparent cover plate 2 of honeycomb structure, vacuum heat collection pipe 3, trapezoidal absorber plate 4, rectangle support 5, cylindrical heat storage can 6, outer thermal insulation layer 7, blower fan 8, second are imitated heating unit blast inlet 10, first and imitated heating unit air outlet 11, rectangular metal cavity 12, air outlet 13 as Fig. 3-1.
The outer insulation construction 7 of system is made of adiabatic resin board, double playing a supportive role.Select the up and down cover plate of sunlight board for use as transparent honeycomb structure 2.Imitate heating unit with vacuum heat collection pipe 3 as first, adopt the vacuum interlayer structure, skin is the high-boron-silicon glass pipe, the internal layer endothermic tube scribbles the copper tube of coating for selective absorption for the surface, one end is inserted on the adiabatic resin board and links to each other with inlet of cold air, and the other end is inserted on the rectangle support 5 and links to each other with the first effect heating unit air outlet 11.Imitate heating unit with trapezoidal absorber plate 4 as second, be fixed by rivet 9, the material selection galvanized sheet of trapezoidal absorber plate 4, its sunny slope is coated with solar selective coat.Trapezoidal absorber plate 4, rectangular metal cavity 12, whole solar energy air heat collector is divided into three enclosed passages, the topmost enclosed passage is to have the transparent cover plate 2 of honeycomb structure and the enclosed passage between the trapezoidal absorber plate 4, the intermediary enclosed passage is the enclosed passage between trapezoidal absorber plate 4 and the rectangular metal cavity 12, the foot enclosed passage is the heat accumulation passage of rectangular metal cavity 12 inside, and the ratio of three channel thickness of upper, middle and lower is 2: 1: 2.Placed side by side between the base plate of rectangular metal cavity 12 and outer thermal insulation layer 7 the cylindrical heat storage can 6 that the low temperature heat accumulating is housed.Connect with enhancement of heat transfer by fin with holes between the cylindrical heat storage can 6.The low temperature heat accumulating can be selected paraffin or sal glauberi for use.It mainly is to melt back leakage and deformation in order to place its heat absorption that heat accumulating is encapsulated in the cylindrical heat storage can 6.Air outlet 13 goes out to be placed with blower fan 8.
Freezing air enters vacuum heat collection pipe 3 by blast inlet 1 and carries out the heating first time, after air after the intensification enters rectangle support 5 from the first effect heating unit air outlet 11, imitate heating unit blast inlet 10 by second again, the sunny slope air flow channel that feeds trapezoidal absorber plate 4 then carries out the heating second time, the opaco air flow channel that enters again between trapezoidal absorber plate 4 and the rectangular metal cavity 12 heats for the third time, gas after the heating enters air outlet 13 after entering heat storage units and 6 heat exchange of cylindrical heat storage can, is delivered to the place that needs warm air after being sucked by blower fan 8.
Specific embodiments of the present invention is:
The wet mud of water ratio 70%-80% is put into mixed stirring device, add sterilant simultaneously, carry out preliminary sterilization, stirred 3-5 minute; The mud that stirs is discharged by the outlet of mixed stirring device, by the mud travelling belt mud inlet 1 of mud by moisture eliminator dropped in the moisture eliminator, simultaneously the warm air that produces of solar energy air heat collector feeds moisture eliminators by the blower fan in the solar energy air heat collector 8 by the air outlet 13 of solar energy air heat collector wet mud is carried out the first step dehydration and drying, and the water ratio of mud can drop to 50%-60%; Above-mentioned mud is discharged by moisture eliminator sludge outlet 4, and sends into by the mud travelling belt and to carry out for second step in the multifuctional solar room and pile up mummification, and the moisture percentage in sewage sludge after the mummification can drop to 25%-35%; Last sludge product is deposited in the hot dried mud warehouse, in order to using; Simultaneously in proportion the hot dried mud back-mixing of 5%-20% in mixed stirring device.The waste gas that produces in the whole process all can carry out foul smell by the odor removal that links to each other with mixed stirring device, moisture eliminator, multifuctional solar room, hot dried mud warehouse to be handled.This system also has auxiliary thermal sources such as electric energy in addition, and auxiliary thermal sources such as electric energy are connected with moisture eliminator or multifuctional solar room, can enable aforesaid device when weather condition is unfavorable.
Though the present invention with preferred embodiment openly as above; but they are not to be used for limiting the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the invention; from when can doing various variations or retouching, so being as the criterion of should being defined with the application's claim protection domain of protection scope of the present invention.
Claims (7)
1, a kind of sludge drying system is characterized in that: comprise mixed stirring device, moisture eliminator, multifuctional solar room, solar energy air heat collector, hot dried mud warehouse, odor removal, auxiliary thermal source; Wet mud is put into mixed stirring device and is stirred; The mud that stirs is discharged by the outlet of mixed stirring device, by the mud travelling belt mud is dropped in the moisture eliminator by the mud of moisture eliminator inlet, the warm air that produces of solar energy air heat collector feeds moisture eliminator by the blower fan in the solar energy air heat collector by the air outlet of solar energy air heat collector wet mud is carried out the first step dehydration and drying simultaneously; Above-mentioned mud is discharged by the moisture eliminator sludge outlet, and sends into by the mud travelling belt and to carry out for second step in the multifuctional solar room and pile up mummification; Last sludge product is deposited in the hot dried mud warehouse; The waste gas that produces in the whole process all can carry out foul smell by the odor removal that links to each other with mixed stirring device, moisture eliminator, multifuctional solar room, hot dried mud warehouse to be handled.
2, a kind of sludge drying system according to claim 1, it is characterized in that: this system also has the electric energy auxiliary thermal source, and the electric energy auxiliary thermal source is connected with moisture eliminator or multifuctional solar room.
3, a kind of sludge drying system according to claim 1 is characterized in that: described moisture eliminator comprises mud inlet (1), cavity (2), venting port (3), sludge outlet (4), wind-distributing pipe (5), hot air inlet (6) and explosion-proof equipment (7); Sludge outlet (4) is located at the outer middle side part of cavity (2) and hot air inlet (6); Mud inlet (1) is positioned at cavity (2) top cover near hot air inlet (6) one sides; Venting port (3) is positioned at the top cover of cavity (2) near sludge outlet (4) one sides; Hot air inlet (6) is positioned at cavity (2) one side middle and upper parts, and hot air inlet (6) becomes downward-sloping shape, and the angle of inclination is 45 °; Explosion-proof equipment (7) is positioned at cavity (2) top cover near venting port one side.
4, a kind of sludge drying system according to claim 1 is characterized in that: described solar energy air heat collector comprises blast inlet (1), has the transparent cover plate (2) of honeycomb structure, vacuum heat collection pipe (3), trapezoidal absorber plate (4), rectangle support (5), cylindrical heat storage can (6), outer thermal insulation layer (7), blower fan (8), second are imitated heating unit blast inlet (10), first and imitated heating unit air outlet (11), rectangular metal cavity (12), air outlet (13); The outer insulation construction (7) of system is made of adiabatic resin board; Select the up and down cover plate of sunlight board for use as transparent honeycomb structure (2); Adopt the vacuum interlayer structure with vacuum heat collection pipe (3), skin is the high-boron-silicon glass pipe, the internal layer endothermic tube scribbles the copper tube of coating for selective absorption for the surface, one end is inserted on the adiabatic resin board and links to each other with inlet of cold air, and the other end is inserted into rectangle support (5) and upward links to each other with the first effect heating unit air outlet (11); Trapezoidal absorber plate (4) is fixed by rivet (9), the material selection galvanized sheet of trapezoidal absorber plate (4), and its sunny slope is coated with solar selective coat; Trapezoidal absorber plate (4), rectangular metal cavity (12), whole solar energy air heat collector is divided into three enclosed passages, the topmost enclosed passage is transparent cover plate (2) with honeycomb structure and the enclosed passage between the trapezoidal absorber plate (4), the intermediary enclosed passage is the enclosed passage between trapezoidal absorber plate (4) and the rectangular metal cavity (12), the foot enclosed passage is the inner heat accumulation passage of rectangular metal cavity (12), and the ratio of three channel thickness of upper, middle and lower is 2: 1: 2; The cylindrical heat storage can (6) that the low temperature heat accumulating is housed is placed side by side between the base plate of rectangular metal cavity (12) and outer thermal insulation layer (7); Connect by fin with holes between the cylindrical heat storage can (6); Heat accumulating is encapsulated in the cylindrical heat storage can (6) main; Air outlet (13) goes out to be placed with blower fan (8); The low temperature heat accumulating is selected paraffin or sal glauberi for use.
5, according to the technological process of any described a kind of sludge drying system in the claim 1 to 4, it is characterized in that: may further comprise the steps:
(1) mud that will wet is put into mixed stirring device, tentatively stirs;
(2) in mixed stirring device, spray into sterilant, mix stirring simultaneously;
(3) mud of handling in (2) is dropped in the moisture eliminator, the warm air that utilizes solar energy air heat collector to produce carries out the first step mummification to mud;
(4) mud after the first step mummification is dropped in the multifuctional solar room, carry out the second step mummification;
(5) sludge product with mummification drops in the hot dried mud warehouse;
(6) mud in the dried mud warehouse of heat is back to mixed stirring device in the ratio of 5%-20%.
6, the technological process of a kind of sludge drying system according to claim 5 is characterized in that: the churning time in the step (1) is 3-5 minute.
7, the technological process of a kind of sludge drying system according to claim 5 is characterized in that: the waste gas that produces in the above-mentioned steps all feeds odor removal and carries out the foul smell processing.
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| CN2009101831073A CN101628780B (en) | 2009-08-07 | 2009-08-07 | Sludge drying system and sludge drying process |
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| CN2009101831073A CN101628780B (en) | 2009-08-07 | 2009-08-07 | Sludge drying system and sludge drying process |
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| CN101628780B CN101628780B (en) | 2011-05-04 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891366A (en) * | 2010-08-13 | 2010-11-24 | 方远建设集团股份有限公司 | Sludge drying method |
| CN102190415A (en) * | 2010-03-15 | 2011-09-21 | 株式会社东芝 | Sludge drying method |
| CN102603147A (en) * | 2012-03-09 | 2012-07-25 | 北京雷特科技有限公司 | Sludge drying device |
| CN102992570A (en) * | 2011-09-09 | 2013-03-27 | 同济大学 | Electric-regenerative solar energy assisted sludge biodrying system |
| CN103168007A (en) * | 2010-04-21 | 2013-06-19 | 促进信托(第1信托13337/99) | Sludge treatment system and method |
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