CN214032202U - Rapid sludge granulation drying treatment system based on medium loading - Google Patents
Rapid sludge granulation drying treatment system based on medium loading Download PDFInfo
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- CN214032202U CN214032202U CN202022938101.7U CN202022938101U CN214032202U CN 214032202 U CN214032202 U CN 214032202U CN 202022938101 U CN202022938101 U CN 202022938101U CN 214032202 U CN214032202 U CN 214032202U
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Abstract
A rapid sludge granulation drying treatment system based on medium loading belongs to the technical field of sludge treatment, and comprises a sludge dehydration device, a heat transfer medium heating device, a granulator, a sludge dryer, a rolling and crushing device and a screening device which are sequentially connected; heating a plurality of metal balls in a heat transfer medium heating device, sending the metal balls into a granulator, and dewatering sludge and sending the sludge into the granulator; the metal balls are mixed with wet sludge to form homogeneous sludge balls with metal balls as centers and wet sludge wrapped on the surfaces, then the homogeneous sludge balls enter a sludge dryer to remove moisture in the wet sludge, the sludge is crushed by rolling to separate the metal balls from the sludge, the metal balls are repeatedly heated after being screened by a screening machine and recycled, and the dried sludge is conveyed to a dry material bin. The utility model has the advantages that: the metal balls in the mud balls provide heat, so that the inside and the outside of the sludge are heated, the energy consumption of sludge drying is greatly reduced, the water content of the sludge is further reduced, and the efficiency of sludge drying is improved.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, concretely relates to quick sludge granulation mummification processing system based on medium loading.
Background
Each of the sewage treatment plants and the sewage treatment plants faces a problem of how to dispose of a large amount of surplus sludge generated every day. At present, the water content of a large amount of excess sludge generated by water supply plants and sewage plants every day is generally up to 99%, the water content of the sludge is reduced to 60-80% by adopting a sludge dewatering device for dewatering, the dewatered sludge is large in volume, and a large site is occupied during landfill disposal. With the promulgation of the environmental protection law of solid waste pollution (revised 2020), more stringent requirements are put on the treatment and disposal of industrial waste including water supply and sewage sludge, the water content of the sludge is further reduced, and the sludge volume is reduced, so that the sludge treatment and disposal cost can be further reduced. A sludge drying system is required to be added behind a sludge dewatering device to dry sludge, so that the water content of the sludge is further reduced, but the traditional sludge drying system adopts a heat source to dry the surface of the sludge, is a simple single-side heat transfer mode, and is low in heat transfer efficiency and high in energy consumption.
Disclosure of Invention
The utility model aims at providing a quick sludge granulation mummification processing system and processing method based on medium loading, this system passes through the innovation in the technology, changes the state that the mud single face was heated in the traditional sludge drying system before, provides the heat at the inside metal ball of mud ball, makes the inside and outside mud be heated, when further reducing the moisture content of mud, reducing the mud volume, can effectively reduce the energy consumption, raises the efficiency.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a quick sludge granulation mummification processing system based on medium loading which characterized in that: comprises a sludge dewatering device, a heat transfer medium heating device, a granulator, a sludge dryer, a rolling and crushing device and a screening device which are connected in sequence; a sludge collecting hopper is arranged below the output end of the sludge dewatering device, and a first conveyor belt is arranged below the sludge collecting hopper; the output end of the first conveyor belt is connected with the feed end of the granulator; a plurality of metal balls are placed in the heat transfer medium heating device, the output end of the heat transfer medium heating device is connected with a second conveyor belt, and the output end of the second conveyor belt is connected with the feed end of the granulator; the output end of the granulator is connected with the feed end of the sludge dryer through a third conveyor belt; the output end of the sludge dryer is connected with the feed end of the rolling and crushing device through a fourth conveyor belt; the output end of the rolling and crushing device is connected with the feed end of the screening machine through a fifth conveyor belt; the output end of the screening machine is connected with a sixth conveying belt and a seventh conveying belt respectively, the output end of the sixth conveying belt is connected with the feed end of the heat transfer medium heating device, and the output end of the seventh conveying belt is connected with the dry material bin.
The granulator is a drum granulator, the sludge dryer is a low-temperature closed multi-stage countercurrent sludge dryer, and the rolling and crushing device is a roller press.
The metal ball is made of 316L material.
The aperture of the vibrating screen of the screening machine is smaller than the diameter of the metal ball.
And a dust cover is arranged outside the vibrating screen.
The utility model has the advantages and beneficial effects that: the stability of system operation is improved;
1. the utility model discloses the metal ball adopts the 316L material, has certain mechanical strength and chemical stability, can bear heat absorption and exothermic process many times, can not cause sludge pollution with the mud contact.
2. The metal ball passes through the conveyer belt conveying, and the wire mesh material is chooseed for use to the conveyer belt, and is high temperature resistant, possesses anti-skidding performance.
3. And an internal heating mode is adopted, the temperature of the metal balls is heated to 120-350 ℃, the protein of pathogenic bacteria in wet sludge is denatured due to high temperature, and the pathogenic bacteria in the sludge are killed.
4. Adopt cylinder form granulator, the rotational speed frequency conversion is adjustable, and the inside metal material that adopts of cylinder is high temperature resistant, corrosion-resistant, can keep the heat of metal ball as far as, reduces calorific loss, reduces energy consumption, is convenient for combine the granulation with wet mud.
5. The heating device of the heat transfer medium is an eddy current induction heater, and converts electric energy into magnetic energy to enable the heated metal balls to generate heat by sensing the magnetic energy.
6. The drying-machine adopts low temperature evaporation, condensation dehumidification principle, and the enclosure space design is constituteed to the thermal-insulated material of organism outer wall, and inside conveyer belt adopts 3 layers of structural style conveying, makes the heat in the internal circulation, realizes the maximize of heat utilization.
7. The discharge rate and the discharge water content of the sludge dryer can be adjusted in a variable frequency mode, and energy is saved.
8. The sludge drying machine adopts low temperature evaporation, condensation dehumidification principle, and the high moisture content material of convection current on to the stainless steel conveyer belt is dried, then carries out the condensation dewatering with moist hot-blast through heat recovery system, reduces the energy consumption to reach the purpose of material drying minimizing, the comdenstion water can directly discharge to domestic sewage system pipeline after the inspection is qualified.
9. 3 layers of conveying are adopted in the sludge dryer, and the two sides are provided with flanges to prevent mud balls from rolling off so as to realize the maximization of hot air utilization.
The utility model discloses creative adoption metal ball increases heat transfer area's method, and it is single to solve present heating heat transfer mode, and the energy consumption is high, the problem of inefficiency, and the effective increasing thermal efficiency of technology reduces the energy consumption, improves throughput, reduces mud volume and weight to resource utilization can be done to the mud after handling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein:
1-a sludge dewatering device, 2-a sludge collecting hopper, 3-a first conveyor belt, 4-a granulator, 5-a low-temperature closed multistage countercurrent sludge dryer, 6-a rolling and crushing device, 6.1-a fixed roller, 6.2-a movable roller, 7-a screening device, 8-a dry material bin, 9-a heat transfer medium heating device, 10-metal balls, 11-a second conveyor belt, 12-a third conveyor belt, 13-a fourth conveyor belt, 14-a fifth conveyor belt, 15-a seventh conveyor belt and 16-a sixth conveyor belt.
Detailed Description
As shown in fig. 1, the utility model discloses a quick sludge granulation mummification processing system based on medium loading, it includes sludge dewatering device 1, heat transfer medium heating device 9, granulator 4, low temperature airtight multistage countercurrent flow sludge drying machine 5, rolls breaker 6, screening plant 7 that connect gradually, the system is the modularization combination, adopts the conveyer belt to connect between the adjacent module, uses manpower sparingly, improves degree of automation; a sludge collecting hopper 2 is arranged below the output end of the sludge dewatering device 1, a first conveying belt 3 is arranged below the sludge collecting hopper 2, the output end of the first conveying belt 3 is connected with the feed end of a drum-type granulator 4, wet sludge from the sludge dewatering device 1 falls into the sludge collecting hopper 2, is uniformly distributed on the first conveying belt 3 through an opening at the bottom of the sludge collecting hopper 2 and is conveyed into the drum-type granulator 4, the rotating speed of the drum-type granulator 4 is adjustable in a variable frequency mode, and the interior of a drum is made of metal materials and is resistant to high temperature and corrosion; the heat transfer medium heating device 9 is an eddy current induction heater, a plurality of metal balls 10 are placed in the heat transfer medium heating device, the metal balls 10 are made of 316L materials or metal balls with large specific heat capacity, small expansion coefficient and stable chemical properties, the output end of the eddy current induction heater is connected with a second conveyor belt 11, the output end of the second conveyor belt 11 is connected with the feed end of a drum-type granulator 4, the metal balls 10 are heated to 120-350 ℃ in the eddy current induction heater 9 and carry certain heat, the metal balls are conveyed to the drum-type granulator 4 through the second conveyor belt 11 made of a metal wire mesh material in proportion to be mixed, the metal balls form a ball center under the action of mechanical force until the ball center is formed, the surface of the metal balls is wrapped by homogeneous mud balls of about 1-3 mm, and the diameter range of the mud balls is 4-12 mm; the output end of the drum-type granulator 4 is connected with the feed end of a sludge dryer 5 through a third conveyor belt 12, the sludge dryer 5 is a low-temperature closed multistage countercurrent sludge dryer, the inside of a closed drying bin of the sludge dryer is divided into 3 layers of stainless steel conveyor belts from top to bottom, the two side bands of the conveyor belts are flanged to prevent mud balls from rolling off, the first layer of the conveyor belts runs from the feed side to the discharge side, the second layer runs from the discharge side to the feed side, and the third layer runs from the feed side to the discharge side; the homogeneous mud balls are sent to a low-temperature closed multistage countercurrent sludge dryer 5, are uniformly distributed on a stainless steel conveying belt in the dryer for multistage drying, remove moisture in the sludge under the combined action of the heat of the metal balls 10 and external countercurrent hot air, reduce the water content, and the discharging speed and the discharging water content of the low-temperature closed multistage countercurrent sludge dryer 5 can be adjusted in a variable-frequency mode, so that the energy is saved; the wet hot air after drying the small balls is condensed to remove water by partially recovering heat carried by condensed water through a heat recovery system matched with the dryer, so that the energy consumption is reduced, and the condensed water is directly discharged after being inspected to be qualified, so that the aim of drying and reducing the materials is fulfilled. The output end of the low-temperature closed multistage countercurrent sludge dryer 5 is connected with the feed end of the rolling and crushing device 6 through a fourth conveyor belt 13, the dried homogeneous sludge balls are conveyed to the rolling and pressing roller 6 through a spiral discharging system of the low-temperature closed multistage countercurrent sludge dryer 5 and the fourth conveyor belt 13, the distance between a fixed roller 6.1 and a movable roller 6.2 in the rolling and pressing roller 6 is adjustable, and the distance is adjusted to be passed by a metal ball 10. The sludge coated on the metal balls 10 is crushed by the external rolling force, and the metal balls 10 are separated from the sludge. The output end of the roller press 6 is connected with the feed end of the screening machine 7 through a fifth conveyor belt 14, the separated mixed material dried sludge and the metal balls enter the screening machine 7 through the fifth conveyor belt 14 together, the aperture of a vibrating screen 7 of the screening machine is smaller than the diameter of the metal balls 10, only dried materials are allowed to pass through, and the mud ball separation efficiency is improved through the vibration effect, so that the metal balls 10 and the dried sludge are separated more thoroughly; and a dust cover (not shown in the figure) is arranged outside the vibrating screen 7 to absorb dust and avoid dust pollution. And the screened metal balls 10 are conveyed back to the eddy current induction heater 9 through the sixth conveyor belt 16 for repeated heating, then are mixed with wet sludge for granulation and cyclic utilization, and the dried sludge is conveyed to the dry material bin 8 or a transport vehicle through the seventh conveyor belt 15, so that the sludge granulation and drying treatment process is completed.
The utility model discloses the selection of conveyer belt material has the area body elasticity good, non-deformable, has the material of wear-resisting, resistant pounding, the good advantage of waterproof nature.
The utility model discloses a processing method of quick sludge granulation mummification processing system based on medium loading, it includes following step: after the sludge is dehydrated, wet sludge from the sludge dehydrating device 1 falls into a sludge collecting hopper 2, is uniformly distributed on a first conveyor belt 3 through an opening at the bottom of the sludge collecting hopper 2, and is conveyed into a drum-type granulator 4; in the heat transfer medium heating device, metal balls 10 are heated to 120-350 ℃ in an eddy current induction heater 9, carry certain heat, are conveyed into a drum-type granulator 4 through a second conveyor belt 11 made of a metal wire mesh material in proportion to be mixed, and are coated with sludge with the diameter of 4-12 mm until the ball center is formed and consists of the heat transfer metal balls and the surface is coated with the uniform sludge balls of about 1-3 mm of sludge under the action of mechanical force; the homogeneous mud balls are sent to a low-temperature closed multistage countercurrent sludge dryer 5 for multistage drying, the homogeneous mud balls are uniformly distributed on a stainless steel conveyor belt inside the dryer, the sludge removes water in the sludge under the combined action of the heat of the metal balls 10 and external countercurrent hot air, the water content is reduced, the heat of condensed water is partially recovered by moist hot air after the small balls are dried through a heat recovery system arranged on the dryer, the condensed water is condensed to remove water, the energy consumption is reduced, the condensed water is directly discharged after being qualified, and the aim of drying and reducing the quantity of the materials is fulfilled; the dried homogeneous mud balls are sent to a rolling and crushing device roller press 6 through a spiral discharging system of a low-temperature closed multistage countercurrent sludge dryer 5 and a fourth conveyor belt 13, the distance between a fixed roller 6.1 and a movable roller 6.2 in the roller press 6 is adjusted to be capable of allowing the metal balls 10 to pass through, the sludge coated on the metal balls 10 is crushed through the action of external rolling force, and the metal balls 10 are separated from the sludge; the separated mixture dried sludge and the heat transfer metal balls enter a vibrating screen 7 in a screening machine together through a fifth conveyor belt 14, the aperture of the vibrating screen is smaller than the diameter of the heat transfer metal balls 10, only the dried material is allowed to pass, and the mud ball separation efficiency is improved through the vibration effect, so that the heat transfer metal balls 10 and the dried sludge are separated more thoroughly; the screened metal balls 10 are conveyed back to the eddy current induction heater 9 through a sixth conveyor belt 16 for repeated heating, then are mixed with wet sludge for granulation and recycling, and the dried sludge is conveyed to a dry material bin 8 or a transport vehicle through a seventh conveyor belt 15; thus finishing the treatment process of the sludge granulation drying treatment.
Claims (5)
1. The utility model provides a quick sludge granulation mummification processing system based on medium loading which characterized in that: comprises a sludge dewatering device, a heat transfer medium heating device, a granulator, a sludge dryer, a rolling and crushing device and a screening device which are connected in sequence; a sludge collecting hopper is arranged below the output end of the sludge dewatering device, and a first conveyor belt is arranged below the sludge collecting hopper; the output end of the first conveyor belt is connected with the feed end of the granulator; a plurality of metal balls are placed in the heat transfer medium heating device, the output end of the heat transfer medium heating device is connected with a second conveyor belt, and the output end of the second conveyor belt is connected with the feed end of the granulator; the output end of the granulator is connected with the feed end of the sludge dryer through a third conveyor belt; the output end of the sludge dryer is connected with the feed end of the rolling and crushing device through a fourth conveyor belt; the output end of the rolling and crushing device is connected with the feed end of the screening machine through a fifth conveyor belt; the output end of the screening machine is connected with a sixth conveying belt and a seventh conveying belt respectively, the output end of the sixth conveying belt is connected with the feed end of the heat transfer medium heating device, and the output end of the seventh conveying belt is connected with the dry material bin.
2. The rapid sludge granulation drying treatment system based on medium loading according to claim 1, characterized in that: the granulator is a drum granulator, the sludge dryer is a low-temperature closed multi-stage countercurrent sludge dryer, and the rolling and crushing device is a roller press.
3. The rapid sludge granulation drying treatment system based on medium loading according to claim 1, characterized in that: the metal ball is made of 316L material.
4. The rapid sludge granulation drying treatment system based on medium loading according to claim 1, characterized in that: the aperture of the vibrating screen of the screening machine is smaller than the diameter of the metal ball.
5. The rapid sludge granulation drying treatment system based on medium loading according to claim 4, characterized in that: and a dust cover is arranged outside the vibrating screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938101.7U CN214032202U (en) | 2020-12-10 | 2020-12-10 | Rapid sludge granulation drying treatment system based on medium loading |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938101.7U CN214032202U (en) | 2020-12-10 | 2020-12-10 | Rapid sludge granulation drying treatment system based on medium loading |
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| CN214032202U true CN214032202U (en) | 2021-08-24 |
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| CN202022938101.7U Active CN214032202U (en) | 2020-12-10 | 2020-12-10 | Rapid sludge granulation drying treatment system based on medium loading |
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