CN116282801A - High-temperature thermal hydrolysis treatment system and method for sludge treatment - Google Patents
High-temperature thermal hydrolysis treatment system and method for sludge treatment Download PDFInfo
- Publication number
- CN116282801A CN116282801A CN202310185913.4A CN202310185913A CN116282801A CN 116282801 A CN116282801 A CN 116282801A CN 202310185913 A CN202310185913 A CN 202310185913A CN 116282801 A CN116282801 A CN 116282801A
- Authority
- CN
- China
- Prior art keywords
- sludge
- tank
- flash tank
- temperature
- pressure
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 156
- 238000009283 thermal hydrolysis Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005496 tempering Methods 0.000 claims abstract description 21
- 238000000197 pyrolysis Methods 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims description 44
- 239000011148 porous material Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 25
- 238000001704 evaporation Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 210000002421 cell wall Anatomy 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 2
- 229920002521 macromolecule Polymers 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 208000005156 Dehydration Diseases 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- 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
-
- 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
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of sludge treatment and discloses a high-temperature thermal hydrolysis treatment system for sludge treatment, which comprises a feeding device, a tempering mechanism, a preheating tank, a pyrolysis heater, a pressure maintaining tank and a flash tank which are sequentially communicated according to the flowing direction of sludge, wherein the flash tank comprises a primary flash tank and a secondary flash tank, steam of the primary flash tank is conveyed to the preheating tank through a steam pipeline, and a steam pipe of the secondary flash tank is connected with a hot water tank which is connected with the tempering mechanism through a water pump. The invention has the following advantages and effects: on one hand, the sludge can break the cell walls of the sludge at high temperature and high pressure, promote the degradation of macromolecular substances in the sludge, be favorable for subsequent biochemical treatment of the sludge, and achieve the aim of reducing the sludge, on the other hand, the stay time of the sludge in the pressure maintaining tank is controlled by setting the flow of the sludge into and out of the pressure maintaining tank, so that the continuous high-temperature hydrolysis of the sludge can be realized, and the thermal hydrolysis efficiency and the equipment utilization rate of the sludge are improved.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a high-temperature thermal hydrolysis treatment system for sludge treatment.
Background
Municipal sludge is a semisolid or solid substance generated in the sewage treatment process, and is an extremely complex non-uniform mass composed of organic residues, bacterial cells, inorganic particles, colloid and the like. Sludge high-temperature thermal hydrolysis is one of the efficient sludge pretreatment technologies. The sludge high-temperature thermal hydrolysis pretreatment process is characterized in that high-solid-content dehydrated sludge (the solid content is 10% -20%) is used as an object, high-temperature (155-170C) and high-pressure (6 bar) are adopted to carry out thermal hydrolysis and flash evaporation treatment on the sludge, the dehydrated sludge is instantaneously released through high temperature, high pressure and pressure, the molecular structure of the sludge is forced to change, extracellular polymers and macromolecular organic matters in the sludge are hydrolyzed, the cell walls of microorganisms in the sludge are broken, the biochemical performance of materials is enhanced, and the flowability of the materials is improved.
The Chinese patent publication No. CN104230136B discloses a sludge high-temperature thermal hydrolysis combined vacuum flash evaporation dehydration treatment method, which comprises the following implementation steps: 1) Preheating the pretreated sludge with the water content of 80-99% by using a surface heater in a preheating tank; 2) Heating and high-temperature thermal hydrolysis treatment are carried out on the sludge after the preheating treatment in a heating tank by a second surface heater; 3) Carrying out primary normal-pressure flash evaporation dehydration treatment on the sludge subjected to heating and high-temperature thermal hydrolysis treatment in the normal-pressure flash evaporation tank; 4) And vacuumizing the vacuum flash tank by using a vacuum pump to generate vacuum negative pressure in the vacuum flash tank, inputting the sludge subjected to primary normal pressure flash dehydration treatment into the vacuum flash tank, and performing secondary vacuum flash dehydration treatment on the sludge in the vacuum flash tank to obtain the sludge with the water content of 50-80%. In this scheme, mud can only intermittent type carries out the processing in each jar, can't carry out continuous type's processing, and adopts surface heater directly to heat mud, and the energy consumption is great.
The invention patent application with the application publication number of CN115403235A discloses a continuous sludge thermal hydrolysis system, which comprises a feeding device, a thermal hydrolysis tank with a heating device, a discharging pressure maintaining device, a discharging waste heat recovery device and a material back mixing device, wherein the feeding device, the thermal hydrolysis tank with the heating device, the discharging pressure maintaining device, the discharging waste heat recovery device and the material back mixing device are sequentially communicated according to the flow direction of sludge, a discharging port of the material back mixing device is communicated with a feeding port of the feeding device, part of discharged materials are returned to the feeding position of the thermal hydrolysis tank, and the discharged materials are fully mixed with fresh sludge. The system only adopts the pressure maintaining device to carry out pyrolysis treatment on the sludge, the pyrolysis effect of the sludge is limited, and the subsequent biochemical requirements cannot be met.
Disclosure of Invention
The invention aims to provide a high-temperature thermal hydrolysis treatment system for sludge treatment, which has the effects of good sludge pyrolysis effect, high heat energy recycling rate and low energy consumption.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a high temperature thermal hydrolysis processing system for sludge treatment, includes feed arrangement, quenching and tempering mechanism, preheating tank, pyrolysis heater, pressurize jar and flash tank that communicate in proper order according to mud flow direction, the flash tank includes one-level flash tank and second grade flash tank, the steam of one-level flash tank is carried to preheating tank department through the steam conduit, be connected with the hot-water tank on the steam pipe of second grade flash tank, the hot-water tank passes through the water pump and links to each other with quenching and tempering mechanism.
The flash tank is further provided with a tank body, wherein the tank body is internally provided with a pore plate, the circumferential surface of the pore plate is fixedly connected with the inner wall of the tank body, and a high-pressure area is arranged above the pore plate, and a low-pressure area is arranged below the pore plate.
The invention is further provided with: the support frame is arranged above the pore plate, a plurality of separation rods are arranged on the support frame, a plurality of through holes are uniformly formed in the pore plate, the separation rods are inserted into the through holes, and the outer walls of the separation rods are connected with the inner walls of the through holes.
The invention is further provided with: the utility model discloses a flash tank, including the support frame, the partition rod upper end fixedly connected with driven helical gear, driven helical gear rotates to be connected with on the support frame, rotate on the support frame and be connected with initiative helical gear, driven helical gear meshes with initiative helical gear mutually, flash tank top is equipped with the motor, the output and the initiative helical gear fixed connection of motor, the output and flash tank top department of meeting of motor are equipped with the sealing washer.
The invention is further provided with: the separation rod comprises a connecting rod fixedly connected to the lower end of the driven bevel gear, a separation sleeve is sleeved on the connecting rod, the separation sleeve is connected with the connecting rod through a spring, and the elastic force of the spring drives the separation sleeve to move upwards.
The invention is further provided with: the separation sleeve comprises a vertical line section and a sealing section from top to bottom, wherein a plurality of vertical line bulges parallel to each other are uniformly arranged on the side surface of the vertical line section, a plurality of spiral bulges are arranged on the side surface of the sealing section, and the lengths of the vertical line section and the sealing section are 1-1.5 times of the thickness of the pore plate.
The invention is further provided with: and a limiting block is arranged at the upper end of the separation sleeve.
The invention is further provided with: the inside of the separation sleeve is provided with a sliding block, and the connecting rod is provided with a sliding groove for the sliding block to be embedded.
The invention is further provided with: the tempering mechanism is a horizontal stirring tank.
The invention is further provided with: s1, inputting sludge with the solid content of 13-20% into a tempering mechanism through a feeding device, and mixing hot water in a hot water tank with normal-temperature sludge to enable the solid content of the sludge to be 10% so as to obtain tempered sludge;
s2, conveying the sludge subjected to tempering into a preheating tank, and preheating the sludge in the preheating tank by steam generated in the primary flash tank to obtain pretreated moderate-temperature sludge with the temperature of 50-80 ℃;
s2, inputting the sludge in the preheating tank into a pyrolysis heater, and heating the medium-temperature sludge into high-temperature sludge at 150-170 ℃ by the pyrolysis heater in a steam heating mode;
s3, inputting the high-temperature sludge into a pressure maintaining tank, and maintaining the pressure for 15-30 min under the atmospheric pressure of 0.4-0.6 Mpa;
s4, conveying the high-temperature and high-pressure sludge in the pressure maintaining tank to a flash tank for secondary flash evaporation.
The beneficial effects of the invention are as follows:
1. the sludge with higher solid content is firstly sent into a tempering mechanism for tempering, so that the solid content of the sludge reaches 10%, the fluidity of the sludge can be improved, and the sludge can be conveniently pumped subsequently; the sludge after tempering is preheated to 50-80 ℃ in a preheating tank, and the heat source of the preheating tank is steam generated by a primary flash tank, so that the waste heat generated by flash evaporation can be fully utilized, and the energy consumption of a subsequent pyrolysis heater is reduced; after the sludge is heated to 150-170 ℃ in the pyrolysis heater, the sludge is input into the pressure maintaining tank for maintaining the pressure for 15-30 min, so that on one hand, the sludge can break the cell walls of the sludge at high temperature and high pressure, the degradation of macromolecular substances in the sludge is promoted, the subsequent biochemical treatment of the sludge is facilitated, the purpose of reducing the sludge is achieved, and on the other hand, the flow of the sludge into and out of the pressure maintaining tank is set, the residence time of the sludge in the pressure maintaining tank is controlled, the continuous high-temperature thermal hydrolysis of the sludge can be realized, and the thermal hydrolysis efficiency and the equipment utilization rate of the sludge are improved.
2. And (3) after high-temperature and high-pressure hydrolysis of the sludge in the pressure maintaining tank, conveying the sludge into a flash tank, heating water to a certain temperature under a certain pressure by flash evaporation, and then injecting the water into a container with lower pressure, wherein the process of vaporizing part of water into steam is realized by sudden expansion. The flash tank body is internally provided with a pore plate, the pore plate is internally provided with a through hole, the through hole is internally inserted with a separation rod, the separation rod comprises a connecting rod, the connecting rod is sleeved with a separation sleeve, the separation sleeve is connected with the connecting rod through a spring, the separation sleeve comprises a vertical grain section and a sealing section, when high-temperature and high-pressure sludge in the pressure maintaining tank enters a high-pressure area of the flash tank, the sealing section is pushed downwards by the high-pressure sludge, the vertical grain section is inserted into the through hole, the outer wall of the vertical grain section is connected with the inner wall of the through hole, the through hole is divided into a plurality of small holes, the high-pressure sludge is dispersed into a plurality of tiny liquid flows in the small holes, the flow rate of the sludge is increased, the pressure is reduced, a large number of tiny bubbles are generated, after the tiny liquid flows mixed with the tiny bubbles suddenly enter the low-pressure area from the high-pressure area of 0.4 to 0.6Mpa, the volume is suddenly increased, the flow rate suddenly is reduced, the pressure is suddenly reduced, moisture in the high-pressure is gasified in the high-pressure sludge instantaneously, the tiny bubbles instantaneously expand and release huge energy, the cell structure in the sludge is further destroyed, and a large number of hydroxyl free radicals can be generated simultaneously, and the macromolecular structure in the sludge is degraded into small molecules.
3. When high-pressure sludge passes through the through hole of the pore plate, the sealing section of the connecting rod is pushed to move downwards, the upper end of the connecting rod is connected with a spring, the high-pressure sludge can be decompressed, the temperature of the sludge can be rapidly reduced in the decompression process, and the steam in the flash evaporation process enters the preheating tank to realize the recycling of heat after passing through the top defoaming device.
4. A motor is further arranged above the flash tank, the motor drives the separation rod to rotate through the helical gear mechanism, when the pressure in the flash tank is large, the high-pressure sludge drives the separation sleeve on the separation rod to move downwards, so that the vertical line section is inserted into the through hole, when the motor drives the separation rod to rotate, the sludge can enter the low-pressure area through the small holes separated by the vertical line section, thereby being beneficial to forming micro bubbles in the sludge, and meanwhile, the adhered sludge in the through hole can be cleaned, and the through hole is prevented from being blocked; when the pressure in the flash tank is smaller, the spring drives the separation sleeve to move upwards, so that the sealing section is inserted into the through hole, the pore plate can be sealed, the pressure of the high-pressure section is improved, and the pressure difference between the high-pressure area and the low-pressure area of the flash tank is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the process flow of the present invention.
Fig. 2 is a schematic diagram of a flash tank configuration.
FIG. 3 is a schematic diagram of the connection relationship of the motor, the support frame, the driving bevel gear, the driven bevel gear and the partition rod.
Fig. 4 is a schematic view of the spacer bar structure.
Fig. 5 is a schematic diagram of the orifice plate structure.
In the figure, 1, a tank body; 2. an orifice plate; 3. a high pressure region; 4. a low pressure zone; 5. a support frame; 6. a partition rod; 61. a separation sleeve; 611. a vertical line section; 612. a sealing section; 62. a connecting rod; 63. a spring; 64. a limiting block; 65. a chute; 7. a through hole; 8. driven helical gears; 9. a driving helical gear; 10. a motor; 11. and (3) sealing rings.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Examples: a high-temperature thermal hydrolysis treatment system for sludge treatment is shown in fig. 1, and comprises a feeding device, a tempering mechanism, a preheating tank, a pyrolysis heater, a pressure maintaining tank and a flash tank which are sequentially communicated according to the flow direction of sludge, wherein the flash tank comprises a primary flash tank and a secondary flash tank, and a vacuum pump is connected to the secondary flash tank. The feeding device consists of a feeding hopper and a screw pump, the fed sludge is dried sludge of a municipal sewage treatment plant, the solid content of the sludge is 13% -20%, and after the sludge is poured into the feeding hopper, the sludge is conveyed to a tempering mechanism by the screw pump, and the tempering mechanism is a horizontal stirring tank. The steam pipe of the second-stage flash tank is connected with a hot water tank, steam generated by the second-stage flash tank is collected in the hot water tank, the hot water tank is connected with the horizontal stirring tank through a water pump, the solid content of sludge is adjusted to about 10%, the fluidity of the sludge is improved, and the follow-up thermal hydrolysis of the sludge and the transportation of a sludge pump are facilitated. The sludge after tempering is preheated in the preheating tank, the steam of the first flash tank is sent to the preheating tank through a steam pipeline to indirectly preheat the sludge, the temperature of the sludge is heated to 50-80 ℃, and the waste heat of the flash tank is fully utilized. The preheating tank is connected with the pyrolysis heater, a steam pipeline is arranged in the pyrolysis heater, the pyrolysis heater steam pipeline is connected with the boiler, the sludge is heated to be high-temperature sludge at 150-170 ℃ by adopting steam, the high-temperature sludge is pumped into the pressure maintaining tank through the sludge pump, the pressure maintaining is carried out for 15-30 min under the atmospheric pressure of 0.4-0.6 Mpa, the sludge is pyrolyzed under high temperature and high pressure, a large amount of microorganisms are enriched in municipal sludge, and the cell walls of the microorganisms are broken under high temperature and high pressure, so that the subsequent biochemical degradation is facilitated. And finally, conveying the high-temperature and high-pressure sludge in the pressure maintaining tank to a flash tank for secondary flash evaporation.
As shown in fig. 2, the flash tank comprises a tank body 1, wherein a pore plate 2 is arranged in the tank body 1, the pore plate 2 is in a disc shape, the circumferential surface of the pore plate 2 is fixedly connected with the inner wall of the tank body 1, a high-pressure area 3 is arranged above the pore plate 2, a low-pressure area 4 is arranged below the pore plate 2, high-pressure sludge in the pressure maintaining tank firstly enters the high-pressure area 3, then suddenly expands in the flash tank after passing through the pore plate 2, and the pressure suddenly drops, so that the cell structure in the sludge can be further destroyed.
As shown in fig. 3 and 5, a support frame 5 is arranged above the pore plate 2, a plurality of separation rods 6 are arranged on the support frame 5, a plurality of through holes 7 are uniformly formed in the pore plate 2, the separation rods 6 are inserted into the through holes 7, each separation rod 6 comprises a connecting rod 62 and a separation sleeve 61 sleeved on the connecting rod 62, the outer wall of each separation sleeve 61 is connected with the inner wall of each through hole 7, the connecting rod 62 is rotationally connected to the support frame 5, the separation sleeves 61 are connected with the connecting rod 62 through springs 63, and the elastic force of each spring 63 drives the separation sleeve 61 to move upwards. The upper end of the connecting rod 62 is fixedly connected with a driven bevel gear 8, the support frame 5 is rotationally connected with a driving bevel gear 9, the driving bevel gear 9 is meshed with the driven bevel gear 8, a motor 10 is arranged at the top of the flash tank, an output shaft of the motor 10 is fixedly connected with the driving bevel gear 9, and a sealing ring 11 is arranged at the joint of the output end of the motor 10 and the top of the flash tank. The motor 10 drives the driving bevel gear 9 to rotate, and the driven bevel gear 8 and the separation rod 6 are driven to rotate when the driving bevel gear 9 rotates.
As shown in fig. 4, the partition sleeve 61 comprises a vertical line section 611 and a sealing section 612 from top to bottom, the side surface of the vertical line section 611 is uniformly provided with a plurality of vertical line bulges parallel to each other, the sealing section 612 is cylindrical, the diameter of the sealing section 612 is consistent with the inner diameter of the through hole 7, and the lengths of the vertical line section 611 and the sealing section 612 are 1-1.5 times the thickness of the pore plate 2. When the vertical line segment 611 is inserted into the through hole 7, the vertical line segment 611 divides the through hole 7 into a plurality of small holes, when high-pressure sludge flows out from the small holes, the sludge can be dispersed into small thin flows, the flow speed is increased instantly, the pressure in the small holes is reduced, a large number of small bubbles can be formed in the sludge, when the high-pressure sludge flows out from the small holes and enters the low-pressure area 4, the pressure is reduced suddenly, the small bubbles expand instantly and release huge energy, the cell structure in the sludge is further destroyed, a large number of hydroxyl free radicals can be generated simultaneously, and the macromolecular structure in the sludge is degraded into small molecules, so that the subsequent biochemical degradation of the sludge is facilitated. When the sealing section 612 is inserted into the through hole 7, the sealing section 612 seals the orifice plate 2, so that the pressure of the high-pressure area 3 can be increased. The separation sleeve 61 is connected with the connecting rod 62 through the spring 63, when the pressure of the high-pressure area 3 to the sealing section 612 is larger than the elastic force of the spring 63, sludge can push the sealing section 612 out of the through hole 7, the vertical grain section 611 is positioned in the through hole 7, and the sludge flows out of a gap between the vertical grain section 611 and the through hole 7, so that the pressure relief flash evaporation of the high-pressure sludge is realized, the sludge in the flash evaporation tank can be dynamically regulated through the design of the spring 63 and the separation sleeve 61, and the flash evaporation effect of the sludge in the flash evaporation tank is ensured.
As shown in fig. 4, a limiting block 64 is arranged at the upper end of the separation sleeve 61, after the high-pressure sludge pushes the sealing section 612 out of the through hole 7, the limiting block 64 is connected with the pore plate 2, so that the separation sleeve 61 has the limiting function, the spring 63 is prevented from being subjected to excessive tensile force, and the service life of the spring 63 and the running stability of the separation sleeve 61 are improved. The inside of the separation sleeve 61 is provided with a sliding block, the connecting rod 62 is provided with a sliding groove 65 for embedding the sliding block, when the motor 10 drives the connecting rod 62 to rotate through the bevel gear, the connecting rod 62 can drive the separation sleeve 61 to rotate through the sliding block, so that the vertical line section 611 on the separation sleeve 61 rotates, the inner wall of the through hole 7 is cleaned, the inner wall of the through hole 7 is smooth, and the blocking of the through hole 7 is avoided.
A high-temperature thermal hydrolysis treatment method for sludge treatment comprises the following steps:
s1, inputting sludge with the solid content of 13-20% into a tempering mechanism through a feeding device, and mixing hot water in a hot water tank with normal-temperature sludge to enable the solid content of the sludge to be 10% so as to obtain tempered sludge;
s2, conveying the sludge subjected to tempering into a preheating tank, and preheating the sludge in the preheating tank by steam generated in the primary flash tank to obtain pretreated moderate-temperature sludge with the temperature of 50-80 ℃;
s2, inputting the sludge in the preheating tank into a pyrolysis heater, and heating the medium-temperature sludge into high-temperature sludge at 150-170 ℃ by the pyrolysis heater in a steam heating mode;
s3, inputting the high-temperature sludge into a pressure maintaining tank, and maintaining the pressure for 15-30 min under the atmospheric pressure of 0.4-0.6 Mpa;
s4, conveying the high-temperature and high-pressure sludge in the pressure maintaining tank to a flash tank for secondary flash evaporation.
Claims (10)
1. A high-temperature thermal hydrolysis treatment system for sludge treatment is characterized in that: including feed arrangement, quenching and tempering mechanism, preheating tank, pyrolysis heater, pressurize jar and the flash tank that communicate in proper order according to mud flow direction, the flash tank includes one-level flash tank and second grade flash tank, the steam of one-level flash tank passes through steam piping and carries to preheating tank department, be connected with the hot-water tank on the steam pipe of second grade flash tank, the hot-water tank passes through the water pump and links to each other with quenching and tempering mechanism.
2. The high-temperature thermal hydrolysis system for sludge treatment according to claim 1, wherein: the flash tank comprises a tank body (1), wherein a pore plate (2) is arranged in the tank body (1), the circumferential surface of the pore plate (2) is fixedly connected with the inner wall of the tank body (1), and a high-pressure area (3) is arranged above the pore plate (2) and a low-pressure area (4) is arranged below the pore plate.
3. A high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 2, wherein: the utility model discloses a pore plate, including orifice plate (2), support frame (5) are equipped with to orifice plate (2) top, be equipped with a plurality of spacer bars (6) on support frame (5), evenly be equipped with a plurality of through-holes (7) on orifice plate (2), spacer bars (6) are pegged graft in through-hole (7), spacer bars (6) outer wall meets with through-hole (7) inner wall.
4. A high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 3, wherein: the utility model discloses a flash tank, including support frame (5), partition rod (6), driven helical gear (8), support frame (5) are connected with driven helical gear (9) in the rotation, driven helical gear (8) meshes with driving helical gear (9) mutually, flash tank top is equipped with motor (10), the output and the driving helical gear (9) fixed connection of motor (10), the output and flash tank top department of meeting of motor (10) are equipped with sealing washer (11).
5. The high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 4, wherein: the separation rod (6) comprises a connecting rod (62) fixedly connected to the lower end of the driven bevel gear (8), a separation sleeve (61) is sleeved on the connecting rod (62), the separation sleeve (61) is connected with the connecting rod (62) through a spring (63), and the elastic force of the spring (63) drives the separation sleeve (61) to move upwards.
6. The high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 5, wherein: the separation sleeve (61) comprises a vertical line section (611) and a sealing section (612) from top to bottom, a plurality of vertical line bulges which are parallel to each other are uniformly arranged on the side surface of the vertical line section (611), the sealing section (612) is cylindrical, the diameter of the sealing section (612) is consistent with the inner diameter of the through hole (7), and the lengths of the vertical line section (611) and the sealing section (612) are 1-1.5 times the thickness of the pore plate (2).
7. The high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 6, wherein: a limiting block (64) is arranged at the upper end of the separation sleeve (61).
8. The high-temperature thermal hydrolysis system for sludge treatment as claimed in claim 6, wherein: the inside of the separation sleeve (61) is provided with a sliding block, and the connecting rod (62) is provided with a sliding groove (65) for the sliding block to be embedded.
9. The high-temperature thermal hydrolysis system for sludge treatment according to claim 1, wherein: the tempering mechanism is a horizontal stirring tank.
10. A high-temperature thermal hydrolysis treatment method for sludge treatment according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, inputting sludge with the solid content of 13-20% into a tempering mechanism through a feeding device, and mixing hot water in a hot water tank with normal-temperature sludge to enable the solid content of the sludge to be 10% so as to obtain tempered sludge;
s2, conveying the sludge subjected to tempering into a preheating tank, and preheating the sludge in the preheating tank by steam generated in the primary flash tank to obtain pretreated moderate-temperature sludge with the temperature of 50-80 ℃;
s2, inputting the sludge in the preheating tank into a pyrolysis heater, and heating the medium-temperature sludge into high-temperature sludge at 150-170 ℃ by the pyrolysis heater in a steam heating mode;
s3, inputting the high-temperature sludge into a pressure maintaining tank, and maintaining the pressure for 15-30 min under the atmospheric pressure of 0.4-0.6 Mpa;
s4, conveying the high-temperature and high-pressure sludge in the pressure maintaining tank to a flash tank for secondary flash evaporation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310185913.4A CN116282801B (en) | 2023-02-28 | 2023-02-28 | High-temperature thermal hydrolysis treatment system and method for sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310185913.4A CN116282801B (en) | 2023-02-28 | 2023-02-28 | High-temperature thermal hydrolysis treatment system and method for sludge treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116282801A true CN116282801A (en) | 2023-06-23 |
| CN116282801B CN116282801B (en) | 2024-02-02 |
Family
ID=86793538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310185913.4A Active CN116282801B (en) | 2023-02-28 | 2023-02-28 | High-temperature thermal hydrolysis treatment system and method for sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116282801B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012076068A (en) * | 2010-10-06 | 2012-04-19 | Kumagai Gumi Co Ltd | Solid-liquid separation method |
| CN104230136A (en) * | 2014-10-09 | 2014-12-24 | 邓立新 | Sludge pyrohydrolysis joint vacuum flashing dehydration treatment method |
| CN105366901A (en) * | 2015-12-15 | 2016-03-02 | 晋江市世龙厨房设备有限公司 | Sludge treatment method improving dehydration efficiency |
| CN209161817U (en) * | 2018-10-29 | 2019-07-26 | 长沙理工大学 | Intermittent pyrohydrolysis system |
| CN115104746A (en) * | 2022-06-30 | 2022-09-27 | 黄骅市国润生态食品有限公司 | Pressure difference flash evaporation equipment is used in winter jujube processing |
-
2023
- 2023-02-28 CN CN202310185913.4A patent/CN116282801B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012076068A (en) * | 2010-10-06 | 2012-04-19 | Kumagai Gumi Co Ltd | Solid-liquid separation method |
| CN104230136A (en) * | 2014-10-09 | 2014-12-24 | 邓立新 | Sludge pyrohydrolysis joint vacuum flashing dehydration treatment method |
| CN105366901A (en) * | 2015-12-15 | 2016-03-02 | 晋江市世龙厨房设备有限公司 | Sludge treatment method improving dehydration efficiency |
| CN209161817U (en) * | 2018-10-29 | 2019-07-26 | 长沙理工大学 | Intermittent pyrohydrolysis system |
| CN115104746A (en) * | 2022-06-30 | 2022-09-27 | 黄骅市国润生态食品有限公司 | Pressure difference flash evaporation equipment is used in winter jujube processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116282801B (en) | 2024-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106145579B (en) | Alkali residue and excess sludge coupling rotational flow carbon release method and device | |
| US6030538A (en) | Method and apparatus for dewatering previously-dewatered municipal waste-water sludges using high electrical voltages | |
| CN105396862A (en) | Energy regeneration method for solid organic waste alkaline thermal hydrolysis supernate | |
| CN106687418B (en) | Hydrothermal carbonization method and device for optimal mixing of sludge and steam | |
| EP3156374B1 (en) | Method and facility for thermal hydrolysis of organic matter having short residence times and no pumps | |
| CN102531315B (en) | Sludge hydrothermal drying treating device and hydrothermal reactor thereof | |
| WO1999024372A1 (en) | Apparatus for dewatering previously-dewatered municipal waste-water sludges using high electrical voltage | |
| KR20160102193A (en) | Method for the continuous thermal hydrolysis of sludge with a high dryness value | |
| CN116282801B (en) | High-temperature thermal hydrolysis treatment system and method for sludge treatment | |
| CN210736456U (en) | Treatment device for zero discharge of garbage leachate in garbage incineration power station | |
| CN104150735B (en) | A kind of combination unit and sludge drying method of latent heat self-cleaning dish reinforcement sludge dehydration | |
| CN203173945U (en) | Sludge high-temperature carbonization furnace | |
| KR101712166B1 (en) | Apparatus and method for organic waste solubilization and reduction | |
| CN104593233A (en) | High-speed fermentation system for hydraulically sorting organic matters from municipal solid waste and application of high-speed fermentation system | |
| CN115611450A (en) | Modified sediment device of rubbish concentrate and processing system | |
| CN205241476U (en) | Mud spiral propulsion pyrolysis treatment in vertical cities and towns deals with equipment | |
| CN113366110B (en) | Two-by-two tank process and system | |
| CN104150736A (en) | Latent heat transpiration stink treatment device and sludge cake drying and stink treatment method | |
| CN112159671A (en) | Two-stage differential single-screw cracking equipment for solid waste | |
| DE102014108682A1 (en) | Thermal hydrolysis of biomass | |
| CN207313348U (en) | A kind of shale gas produced water treatment system | |
| CN217921803U (en) | Quenching and tempering and energy recovery system are reinforceed to municipal administration mud | |
| CN214032110U (en) | Sewage treatment device for realizing low-temperature flash evaporation of chemical wastewater by utilizing waste heat | |
| CN214270570U (en) | Utilize waste heat to realize sewage treatment plant of pharmacy midbody waste water low temperature flash distillation | |
| CN113896384B (en) | High organic effluent treatment plant of high salt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |