CN105347654A - Sludge drying method and dryer - Google Patents
Sludge drying method and dryer Download PDFInfo
- Publication number
- CN105347654A CN105347654A CN201510734200.4A CN201510734200A CN105347654A CN 105347654 A CN105347654 A CN 105347654A CN 201510734200 A CN201510734200 A CN 201510734200A CN 105347654 A CN105347654 A CN 105347654A
- Authority
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- China
- Prior art keywords
- dram
- gas
- mud
- dedusting
- sludge
- Prior art date
- 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.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 46
- 239000010802 sludge Substances 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003546 flue gas Substances 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000009833 condensation Methods 0.000 claims abstract description 17
- 230000005494 condensation Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 35
- 238000006477 desulfuration reaction Methods 0.000 claims description 20
- 230000023556 desulfurization Effects 0.000 claims description 20
- 239000000428 dust Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 241000700605 Viruses Species 0.000 description 3
- 235000011464 Pachycereus pringlei Nutrition 0.000 description 2
- 240000006939 Pachycereus weberi Species 0.000 description 2
- 235000011466 Pachycereus weberi Nutrition 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/16—Treatment of sludge; Devices therefor by de-watering, drying or thickening using drying or composting beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to the field of sludge treatment and relates to a sludge drying method. The sludge drying method comprises A, drying: conveying sludge into a drying drum of a dryer, heating the outer wall of the drying drum by a heat source in a combustion cover of the dryer, and conveying produced flue gas and heat into the drying drum by a flue gas return pipe on the combustion cover to directly heat the sludge in the drying drum, B, desulphurization and dedusting: feeding the flue gas in the drying drum into a water film scrubber by a flue gas discharge pipe, and carrying out desulphurization and dedusting in the water film scrubber, C, condensation: carrying out condensation on the gas subjected to desulphurization and dedusting to obtain condensate water and oil, D, noncondensable gas high temperature disinfection: returning the noncondensable gas into the combustion cover and carrying out high temperature disinfection and combustion. The invention provides a dryer utilizing the sludge drying method. The sludge drying method has simple processes, a high combustion utilization rate, basically no discharge and small environment pollution. The dried sludge has low water content.
Description
Technical field
The invention belongs to field of sludge treatment, refer in particular to a kind of furnace drying method and dryer thereof of mud.
Background technology
Mud refers to the terminal waste of sewage work and all trades and professions, i.e. domestic sludge and industrial sludge.These mud contain a large amount of microorganisms, pathogenic agent, distribute stench, and what have also contains heavy metal, and mud mainly comprises the harm of environment makes source quality worsen, contaminated soil and farm crop etc.; Along with raising and the production-scale expansion of people's living standard, the hazardness of this pollution substance of mud is also day by day obvious.The suitable treatment techniques of mud should make reducing sludge volume, stabilization and innoxious, if be left unrestricted and uncurbed, its consequence is hardly imaginable.
As everyone knows, the furnace drying method of traditional mud is all that flue gas or steam are dried mud, and after drying, gas just directly discharges, and causes fuel availability not high and serious to environment like this.
Summary of the invention
The object of the invention is to solve deficiency of the prior art, provide a kind of technical process simple, fuel availability is high, and substantially without discharge, environmental pollution is little, the furnace drying method of the mud that the moisture percentage in sewage sludge after oven dry is low and dryer thereof.
The object of the present invention is achieved like this:
A furnace drying method for mud, the method comprises the following steps:
A: dry: be delivered to by mud in the dram of dryer, provide thermal source to heat dram outer wall in the burning cover of dryer, generation heat and flue gas are transported to dram inside by the smoke backflow pipe on burning cover and carry out direct heating to mud.
B: desulfurization and dedusting: the flue gas in dram connects water dust scrubber by smoke exhaust pipe, carries out desulfurization and dedusting in water dust scrubber.
C: condensation: carry out condensation to the gas after desulfurization and dedusting, collects phlegma.
D: non-condensable gas high-temperature sterilization: uncondensable gas leads back in burning cover more again, carries out high temperature virus killing and burning.
Described steps A out after gas enter in the pre-heating drying cylinder of pre-heating drying machine, preheating is carried out to the mud in pre-heating drying cylinder, steps A out after gas temperature have 80 to 100 degrees Celsius, mud in pre-heating drying cylinder can be heated to 60 to 90 degrees Celsius, the gas after preheating carries out step B again; Described dram is dried and to be terminated and after transporting mud, the mud in pre-heating drying cylinder is transmitted back to the oven dry carrying out second cycle in dram.
Between described step B and step C: the gas after desulfurization and dedusting passes in the water of gas filter and carries out after filtration, purification again through row condensation.
Between described step B and step C: the gas after desulfurization and dedusting carries out condensation again after active carbon purifying.
Between described step B and step C: the gas after desulfurization and dedusting passes in the water of gas filter and carries out filtration, purification, then through gac through row secondary-cleaned, finally by row condensation.
In described step C: phlegma comprise water and on a small quantity oil, water and oil carry out oily water separation by water-and-oil separator.
For a sludge dryer for claim 1, comprise dram, be arranged with burning cover and rotate be arranged in burning cover outside described dram, the side of dram is provided with the actuating unit driving dram around own axis; Described dram is provided with opening for feed and smoke outlet, and described burning cover top is provided with air outlet, and burning cover bottom is provided with combustion chamber, and the opening for feed of dram is led to by smoke backflow pipe in air outlet, and the stage casing of described smoke backflow pipe is provided with suction fan.
Be provided with hollow spindle in described dram, the inlet end of hollow spindle facing to the outlet side of smoke backflow pipe, described hollow spindle outwardly extend blade, blade is fixedly connected with dram inwall.
The inwall of described dram forms conveying screw thread.
The inwall of described dram forms material delivering plate.
The present invention gives prominence to compared to existing technology and useful technique effect is:
1, the present invention is by the design of smoke backflow pipe, the flue gas that thermal source in burning cover is produced and heat are after heating dram outer wall, by smoke backflow pipe, flue gas is led in dram again, thus second stage employ is carried out to the heat of flue gas, improve the utilization ratio of fuel.
2, the present invention is by the design of water dust scrubber, and the grit in the flue gas that making burns produces is adsorbed, and carries out desulfurization, makes flue gas comparatively clean, reduces the pollution to environment.
3, the present invention is led back in burning cover more again by uncondensable gas, carries out the design of high temperature virus killing and burning, thus realizes without discharge pollution-free.
4, the present invention is by the design of pre-heating drying cylinder, thus again utilizes dram flue gas out, carries out preheating, thus improve the utilization ratio of fuel to the mud in pre-heating drying cylinder.
5, the present invention is by the design of gas filter, makes gas before discharging by the purification that water carries out again, makes flue gas cleaner, and improves the security of equipment.
6, the present invention is by the design of gac, thus again purifies gas and sterilize.
7, the present invention is by the design of hollow spindle and blade, makes the flue gas in smoke backflow pipe enter in hollow spindle, heats hollow spindle and blade, in dram rotation process, blade plays the effect of stirring to mud, makes heats better, improves the utilization ratio of fuel.
8, the present invention is by the design of material delivering plate, and mud can be broken up by material delivering plate, the contact surface of mud and hot gas is increased, thus improves drying effect, save energy consumption.
Accompanying drawing explanation
Fig. 1 is a kind of gas stream cardon of furnace drying method of mud.
Fig. 2 is a kind of sludge stream cardon of furnace drying method of mud.
Fig. 3 is one of structural representation of energy-saving sludge dryer.
Fig. 4 is the structural representation two of energy-saving sludge dryer.
Fig. 5 is the structural representation of the energy-saving sludge dryer of charging window open mode.
Fig. 6 is the cut-away view of the energy-saving sludge dryer not having hollow spindle.
Fig. 7 is the cut-away view of energy-saving sludge dryer.
Fig. 8 is the structural representation of gas filter.
1-dram; 2-opening for feed; 3-hollow spindle; 4-suction fan; 5-burning cover; 6-air outlet; 7-smoke backflow pipe; 8-smoke outlet; 8a-smoke exhaust pipe; 9-water dust scrubber; 10-blade; 12-conveying screw thread; 13-material delivering plate; 14-combustion chamber; 15-motor; 16-driving toothed gear; 17-follower gear; 18-external part; 19-guide deflection sheave; 20-charging window; 21-gas filter; 22-water; 23-gac; 24-inlet pipe; 25-escape pipe.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the invention will be further described:
A furnace drying method for mud, the method comprises the following steps:
A: dry: mud is delivered in the dram 1 of dryer, in the burning cover 5 of dryer, provide thermal source to heat dram 1 outer wall, generation heat and flue gas are transported to dram 1 inside by the smoke backflow pipe 7 on burning cover 5 and carry out direct heating to mud.
B: desulfurization and dedusting: the flue gas in dram 1 connects water dust scrubber 9 by smoke exhaust pipe, carries out desulfurization and dedusting in water dust scrubber 9.
C: condensation: carry out condensation to the gas after desulfurization and dedusting, collect phlegma, preferably, the gas after desulfurization and dedusting carries out condensation by cooling tower.
D: non-condensable gas high-temperature sterilization: uncondensable gas leads back in burning cover 5 more again, carries out high temperature virus killing and burning.
Described steps A out after gas enter in the pre-heating drying cylinder of pre-heating drying machine, preheating is carried out to the mud in pre-heating drying cylinder, steps A out after gas temperature have 80 to 100 degrees Celsius, the mud in pre-heating drying cylinder can be heated to 60 to 90 degree, the gas after preheating carries out step B again; Described dram is dried and to be terminated and after transporting mud, the mud in pre-heating drying cylinder is transmitted back to the oven dry carrying out second cycle in dram.
Between described step B and step C: the gas after desulfurization and dedusting passes in the water of gas filter and carries out after filtration, purification again through row condensation.
Between described step B and step C: the gas after desulfurization and dedusting carries out condensation-crystallization again after active carbon purifying.
Between described step B and step C: the gas after desulfurization and dedusting passes in the water of gas filter and carries out filtration, purification, then through gac through row secondary-cleaned, finally by row condensation.
In described step C: phlegma comprise water and on a small quantity oil, water and oil carry out oily water separation by water-and-oil separator.
A kind of sludge dryer for claim 1, comprise dram 1, drive dram 1 around the actuating unit of own axis, described dram 1 is provided with opening for feed 2, being arranged with burning cover 5 outside dram 1 and rotating is arranged in burning cover 5, described burning cover 5 is provided with air outlet 6, the opening for feed 2 of dram 1 is led to by smoke backflow pipe 7 in air outlet 6, the stage casing of smoke backflow pipe 7 is provided with suction fan 4, described dram 1 is also provided with smoke outlet 8, by such design, the flue gas that burning cover 5 burning is produced and heat are after heating dram 1 outer wall, by smoke backflow pipe 7, flue gas is led in dram 1 again, thus second stage employ is carried out to the heat of flue gas, improve the utilization ratio of fuel.
Hollow spindle 3 is provided with in described dram 1, the inlet end of hollow spindle 3 faces toward the outlet side of smoke backflow pipe 7, described hollow spindle 3 outwardly extend blade 10, blade 10 is fixedly connected with dram 1 inwall, blade 10 and hollow spindle 3 are followed together with dram 1 and are rotated, preferably, hollow spindle 3 is arranged on the central position of dram 1, the outlet side of smoke backflow pipe 7 faces toward the inlet end of hollow spindle, there is gap the inlet end of hollow spindle 3 and the outlet side of smoke backflow pipe, the outlet side of hollow spindle 3 and and smoke exhaust pipe 81 have gap, by such design, the flue gas partial in smoke backflow pipe 7 is made to enter in hollow spindle 3, hollow spindle 3 and blade 10 are heated, in dram 1 rotation process, blade 10 and mud directly contact and play the effect of stirring, make heats better, flue gas partial in smoke backflow pipe 7 directly enters in dram, dram internal temperature is raised, drying effect is made better to improve the utilization ratio of fuel.
Described blade 10 is hollow setting, and the cavity of blade 10 is communicated with the cavity of hollow spindle 3.
The stage casing of described smoke backflow pipeline 7 is connected with water dust scrubber 9, and the grit in the flue gas that making burns produces is adsorbed by moisture film, makes last flue gas of discharging comparatively clean, reduces the pollution to environment.
The inwall of described dram 1 forms conveying screw thread 12.
The inwall of described dram 1 forms material delivering plate 13, mud can be broken up by material delivering plate 13, the contact surface of mud and hot gas is increased, thus improves drying effect.
The opening for feed of described dram 1 is provided with charging window 20, charging window 20 forms the through hole matched with smoke backflow pipe 7, the outlet side of smoke backflow pipe 7 is stretched in through hole, during feeding, smoke backflow pipe 7 can be removed or pull down the end of smoke backflow pipe 7, then open charging window 20 and carry out feeding, in mud drying course, close charging window 20, make the lost minimizing of heat.
Described actuating unit comprises motor 15 and intermeshing driving toothed gear 16 and follower gear 17, driving toothed gear 16 is driven by motor 15, burning cover 5 is stretched out at the two ends of described dram 1, and follower gear 17 is fixed on external part 18 outer wall of dram 1, and coaxially arranged with dram 1.
Described dram is rotated the concrete structure arranged and is comprised the guide deflection sheave 19 being arranged on dram 1 outer wall, burning cover 5 is stretched out at the two ends of dram 1, dram 1 outer wall of each external part 18 is against on two guide deflection sheaves 19, two guide deflection sheaves 19 are symmetricly set on dram 1 tiltedly downside with the axle center of dram 1, another kind of embodiment is, on the outer wall of dram 1 external part 18, cover has guide ring, the ground of the position of relative guide ring arranges guide deflection sheave 19, and the axial side wall of guide deflection sheave 19 offers the guide path matched with guide ring; Another kind of embodiment is be provided with bearing between dram 1 and burning cover 5.
Motor 15 can control driving toothed gear 16 and rotate clockwise or rotate counterclockwise, and controls dryer 1 clockwise and rotate counterclockwise, and due to the effect of conveying screw thread 12, can control mud and advance or retreat, mud just can discharge mud after retreating easily.
The present invention has technical process simple, and fuel availability is high, and substantially without discharge, environmental pollution is little, the feature that the moisture percentage in sewage sludge after oven dry is low.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a furnace drying method for mud, the method comprises the following steps:
A: dry: mud is delivered in the dram of dryer, provides thermal source to heat dram outer wall in the burning cover of dryer, generation heat and flue gas are transported to dram inside by the smoke backflow pipe on burning cover and carry out direct heating to mud;
B: desulfurization and dedusting: the flue gas in dram connects water dust scrubber by smoke exhaust pipe, carries out desulfurization and dedusting in water dust scrubber;
C: condensation: carry out condensation to the gas after desulfurization and dedusting, collects phlegma;
D: non-condensable gas high-temperature sterilization: uncondensable gas leads back in burning cover more again, again burns.
2. the furnace drying method of a kind of mud according to claim 1, is characterized in that, described steps A out after gas enter in the pre-heating drying cylinder of pre-heating drying machine, carry out preheating to the mud in pre-heating drying cylinder, the gas after preheating carries out step B again; Described dram is dried and to be terminated and after transporting mud, the mud in pre-heating drying cylinder is transmitted back to the oven dry carrying out second cycle in dram.
3. the furnace drying method of a kind of mud according to claim 1, is characterized in that, between described step B and step C: the gas after desulfurization and dedusting carries out condensation after passing in the water of gas filter and carrying out filtration, purification again.
4. the furnace drying method of a kind of mud according to claim 1, is characterized in that, between described step B and step C: the gas after desulfurization and dedusting carries out condensation again after active carbon purifying.
5. the furnace drying method of a kind of mud according to claim 1, it is characterized in that, between described step B and step C: the gas after desulfurization and dedusting passes in the water of gas filter and carries out filtration, purification, then carries out secondary-cleaned through gac, finally by row condensation.
6. the furnace drying method of a kind of mud according to claim 1, is characterized in that, in described step C: phlegma comprise water and on a small quantity oil, water and oil carry out oily water separation by water-and-oil separator.
7. for a sludge dryer for claim 1, it is characterized in that, comprise dram, be arranged with burning cover outside described dram and rotate and be arranged in burning cover, the side of dram is provided with the actuating unit driving dram around own axis; Described dram is provided with opening for feed and smoke outlet, and described burning cover top is provided with air outlet, and burning cover bottom is provided with combustion chamber, and the opening for feed of dram is led to by smoke backflow pipe in air outlet, and the stage casing of described smoke backflow pipe is provided with suction fan.
8. a kind of sludge dryer according to claim 7, it is characterized in that, be provided with hollow spindle in described dram, the inlet end of hollow spindle faces toward the outlet side of smoke backflow pipe, described hollow spindle outwardly extend blade, blade is fixedly connected with dram inwall.
9. a kind of sludge dryer according to claim 7, is characterized in that, the inwall of described dram forms conveying screw thread.
10. a kind of sludge dryer according to claim 7, is characterized in that, the inwall of described dram forms material delivering plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734200.4A CN105347654B (en) | 2015-11-02 | 2015-11-02 | The furnace drying method and its dryer of a kind of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734200.4A CN105347654B (en) | 2015-11-02 | 2015-11-02 | The furnace drying method and its dryer of a kind of sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105347654A true CN105347654A (en) | 2016-02-24 |
| CN105347654B CN105347654B (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510734200.4A Expired - Fee Related CN105347654B (en) | 2015-11-02 | 2015-11-02 | The furnace drying method and its dryer of a kind of sludge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247810A (en) * | 2016-08-01 | 2016-12-21 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN109054868A (en) * | 2018-10-11 | 2018-12-21 | 陕西东鑫垣化工有限责任公司 | Semi-coke device flue gas purification system |
| CN109550304A (en) * | 2018-11-29 | 2019-04-02 | 马鞍山金顺来工业设计有限公司 | A kind of equipment for separating liquid from solid |
| CN115950273A (en) * | 2023-01-07 | 2023-04-11 | 秦皇岛信能能源设备有限公司 | High-temperature flue gas drying sludge treatment equipment and process for metal smelting furnace |
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| AT411254B (en) * | 2002-05-29 | 2003-11-25 | Tecon Engineering Gmbh | Process and assembly to dispose of sewage sludge and waste water treatment sludge by drying and incineration |
| CN102351399A (en) * | 2011-10-17 | 2012-02-15 | 南京国能环保工程有限公司 | Municipal sludge drying method |
| CN102976575A (en) * | 2012-11-29 | 2013-03-20 | 广州市越堡水泥有限公司 | Sludge treatment system and method in cement kiln |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AT411254B (en) * | 2002-05-29 | 2003-11-25 | Tecon Engineering Gmbh | Process and assembly to dispose of sewage sludge and waste water treatment sludge by drying and incineration |
| CN102351399A (en) * | 2011-10-17 | 2012-02-15 | 南京国能环保工程有限公司 | Municipal sludge drying method |
| CN102976575A (en) * | 2012-11-29 | 2013-03-20 | 广州市越堡水泥有限公司 | Sludge treatment system and method in cement kiln |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247810A (en) * | 2016-08-01 | 2016-12-21 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN106247810B (en) * | 2016-08-01 | 2018-05-11 | 宁波大学 | A kind of smoke backflow Dual-barrel rotary kiln |
| CN109054868A (en) * | 2018-10-11 | 2018-12-21 | 陕西东鑫垣化工有限责任公司 | Semi-coke device flue gas purification system |
| CN109550304A (en) * | 2018-11-29 | 2019-04-02 | 马鞍山金顺来工业设计有限公司 | A kind of equipment for separating liquid from solid |
| CN115950273A (en) * | 2023-01-07 | 2023-04-11 | 秦皇岛信能能源设备有限公司 | High-temperature flue gas drying sludge treatment equipment and process for metal smelting furnace |
| CN115950273B (en) * | 2023-01-07 | 2023-07-14 | 秦皇岛信能能源设备有限公司 | High-temperature flue gas drying sludge treatment process for metal melting furnace |
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