CN117964206A - Sludge non-phase change rapid drying equipment - Google Patents
Sludge non-phase change rapid drying equipment Download PDFInfo
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- CN117964206A CN117964206A CN202410229354.7A CN202410229354A CN117964206A CN 117964206 A CN117964206 A CN 117964206A CN 202410229354 A CN202410229354 A CN 202410229354A CN 117964206 A CN117964206 A CN 117964206A
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- 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
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Abstract
The invention discloses a sludge non-phase change rapid drying device which consists of a drying bin, a storage bin, a material conveying device, a heat supply device, a gas-water separation device and a processing system, wherein the material conveying device is communicated with the drying bin, the storage bin is communicated with the drying bin, the gas-water separation device is respectively communicated with the drying bin and the heat supply device, the heat supply device is also communicated with the drying bin, and the drying bin, the storage bin, the material conveying device, the heat supply device and the gas-water separation device are all electrically connected with the processing system through signal wires. Compared with the prior art, the sludge non-phase-change quick drying equipment has the advantages of realizing sludge non-phase-change drying, being low in operation cost, being environment-friendly and the like.
Description
Technical Field
The invention relates to the field of urban solid waste resource utilization, in particular to non-phase-change rapid drying equipment for sludge.
Background
Along with the rapid development of urban land in China, the sludge yield is increased year by year, and along with the increase of the sludge yield, a large amount of pipe network sludge, river and lake black and odorous sediment and general solid waste industrial sludge are also generated. The sludge in China has the characteristics of low organic matter content, high sand content, high yield, partial pollutant content and the like, has the dual properties of 'resources' and 'pollution', and has long been one of the difficult problems of environmental management because of the 'heavy water and light sludge', and the sludge treatment has become an important factor for limiting the sustainable development of cities. Aiming at sludge treatment, the sludge treatment is encouraged to adopt diversified combination modes such as anaerobic digestion, aerobic fermentation, drying incineration, land utilization, building material utilization, synergy and the like to treat the sludge, the reinforced technical support is provided, the common and key technical equipment such as sludge stabilization, innocent treatment, resource utilization, cooperative treatment and the like are mainly broken through, and the innovative technical application of sludge treatment and resource utilization is developed.
Sludge dewatering is the most critical link in all technical routes, and largely determines sludge treatment cost. The water content after the limit dehydration is still about 55% in the conventional economical mechanical dehydration, and in order to further reduce the water content, heat drying modes such as rotary drum type heat drying, rotary disc type heat drying, thin layer evaporator belt type heat drying, paddle type heat drying, spray heat drying, collision type heat drying and the like are mainly adopted at present. The heat drying method has the following defects: the water changes phase, namely, the water is converted into a vapor state from a liquid state, a large amount of heat energy is consumed (the vaporization heat of water at 100 ℃ under standard pressure is q= 2258.77 KJ/kg), waste gas generated by high temperature needs to be treated, equipment is complex, and investment construction and operation costs are high.
Therefore, how to provide a sludge non-phase-change quick drying device, so that the non-phase-change drying device can achieve the technical effects of non-phase-change drying of sludge, economy and environmental protection, and the technical problem to be solved by the person skilled in the art is needed.
Disclosure of Invention
In view of the problems of high cost and environmental protection in the sludge drying process in the prior art, the invention aims to provide a non-phase-change rapid sludge drying device which can realize non-phase-change drying of sludge, reduce the running cost and avoid waste gas in the drying process.
In order to achieve the above purpose, the invention provides a sludge non-phase-change quick drying device, which comprises: the drying bin is provided with a drying liquid phase outlet, a drying feed inlet and a drying air inlet, the drying liquid phase outlet is arranged at the upper end of the drying bin, the drying feed inlet is arranged at one side of the middle part of the drying bin, and the drying air inlet is arranged at one side of the lower part of the drying bin; the storage bin is arranged below the drying bin and is communicated with the drying bin; the conveying device is connected with the drying feed inlet; the heat supply device comprises a heat exchanger and an external heat source heat supplier, the external heat source heat supplier is connected with the heat exchanger through a plurality of first heat supply pipelines, and the heat exchanger is connected with the drying air inlet through a second heat supply pipeline; and one end of the gas-water separation device is connected with the heat exchanger, and the other end of the gas-water separation device is connected with the drying liquid phase outlet.
In a first aspect, the sludge non-phase change rapid drying apparatus further comprises a power system and a treatment system, the power system comprising: a motor; one end of the transmission chain is connected with the motor, and the other end of the transmission chain is connected with the drying bin; the motor, the drying bin, the material conveying device, the gas-water separation device, the heat exchanger and the external heat source heater are electrically connected with the processing system through signal wires.
In a first aspect, the drying bin further comprises: the drying liquid phase outlet is arranged at the upper end of the bin shell, the drying feed inlet is arranged at one side of the middle part of the bin shell, the drying air inlet is arranged at one side of the lower part of the bin shell, and the storage bin is arranged below the bin shell and is communicated with the bin shell; the heat exchanger is connected with the drying air inlet through the second heat supply pipeline; the upper cross braces are detachably arranged in the bin shell; the lower cross brace is detachably arranged in the bin shell and is arranged below the upper cross brace; the rotating shaft upper end support is arranged in the middle of the upper cross brace; the rotating shaft lower end support is arranged in the middle of the lower cross brace; one end of the rotating shaft is rotatably connected with the rotating shaft upper end support, and the other end of the rotating shaft is rotatably connected with the rotating shaft lower end support; the connecting end of the rotating shaft lower end support is fixedly connected with the other end of the transmission chain.
In a first aspect, the drying bin further comprises: the stirring blades are arranged in layers at intervals along the axial direction of the rotating shaft, and the drying feed inlet is arranged between the upper transverse support and the first layer of stirring blades; the equipment fault detector is arranged on the support at the lower end of the rotating shaft; the dust concentration sensor is arranged at the upper part of the bin shell; the access door is arranged on the bin shell and positioned on one side of the rotating shaft; wherein the equipment fault detector and the dust concentration sensor are electrically connected with the processing system through a signal line.
In a first aspect, the gas-water separation device includes: a gas-water separator provided with a separator inlet and a first liquid phase outlet; the water storage tank is provided with a first water storage inlet; one end of the first gas-water separation pipeline is connected with the desiccation liquid phase outlet, and the other end of the first water separation pipeline is connected with the separator inlet; one end of a second gas-water separation pipeline is connected with the first liquid phase outlet, and the other end of the second gas-water separation pipeline is connected with the first water storage inlet; a first temperature and humidity sensor is arranged at the connecting end of one end of the first gas-water separation pipeline and the drying liquid phase outlet; a first liquid flowmeter is arranged at the connecting end of the second first gas-water separation pipeline and the first liquid phase outlet; the first temperature and humidity sensor and the first liquid flowmeter are electrically connected with the processing system through signal wires.
In a first aspect, the gas-water separation device further includes: the induced draft fan is provided with an induced draft inlet and an induced draft outlet; a dehumidifier provided with a dehumidifying inlet and a second liquid phase outlet; one end of the air inducing pipeline is connected with the air inducing inlet; one end of the first dehumidification pipeline is connected with the induced air outlet, and the other end of the first dehumidification pipeline is connected with the dehumidification inlet; one end of a second dehumidification pipeline is connected with the second liquid phase outlet; the gas-water separator is also provided with a separator outlet, and the other end of the induced air pipeline is connected with the separator outlet; the water storage tank is also provided with a second water storage inlet, the other end of the second dehumidification pipeline is connected with the second water storage inlet, and a second liquid flowmeter is arranged at one end, close to the second water storage inlet, of the second dehumidification pipeline; the induced draft fan, the dehumidifier and the second liquid flowmeter are electrically connected with the processing system through signal wires.
In a first aspect, the gas-water separation device further includes: one end of the main airflow pipeline is connected with the heat exchanger; the dehumidifier is further provided with a dehumidification outlet, the other end of the main airflow pipeline is connected with the dehumidification outlet, and a second temperature and humidity sensor is arranged at one end, close to the dehumidification outlet, of the main airflow pipeline; an oxygen content sensor is arranged between the second temperature and humidity sensor and the heat exchanger on the main airflow pipeline; a first gas valve is arranged between the oxygen content sensor on the main gas flow pipeline and the heat exchanger; the second temperature and humidity sensor, the oxygen content sensor and the first gas valve are electrically connected with the processing system through signal wires.
In a first aspect, the gas-water separation device further includes: the two air flow branch pipelines are arranged at one end of each air flow branch pipeline, the first air flow branch pipeline is arranged between the oxygen content sensor and the first air valve and is connected with the main air flow pipeline, and the second air flow branch pipeline is arranged between the first air valve and the heat exchanger and is connected with the main air flow pipeline.
In a first aspect, the gas-water separation device further includes: the other end of the first air flow branch pipeline is connected with the air treatment device, and a pressure exhaust valve is arranged on the first air flow branch pipeline; the other end of the second air flow branch pipeline is connected with the inert gas supply device, and a second air valve is arranged on the second air flow branch pipeline; wherein the pressure vent valve, the inert gas supply device and the second gas valve are electrically connected with the processing system through signal lines.
In a first aspect, the feeding device comprises: the crusher is provided with a crushing discharge hole; the material conveying machine is provided with a material conveying inlet and a material conveying outlet, and the material conveying outlet is connected with the drying inlet and extends into the bin shell; the material conveying and feeding port is arranged right below the crushing discharge port; wherein the crusher and the conveyor are electrically connected with the processing system through a signal line.
The beneficial effects are that:
The invention relates to a sludge non-phase-change rapid drying device which mainly comprises a drying bin, a storage bin, a material conveying device, a heat supply device and a gas-water separation device, wherein a sludge cake is conveyed to the drying bin through the material conveying device, enters the drying bin from a drying feed port above the drying bin, and is stored after being dried in the drying bin. The external heat source supply device provides a drying heat source, hot air enters the drying bin through the drying air inlet to dry sludge after heat exchange of the heat exchanger, the temperature of the hot air is gradually reduced from bottom to top, the phenomenon that sludge in the lower area of the drying bin is dried and sludge in the upper area of the drying bin is wet is formed, and the temperature of gas after heat exchange of the heat exchanger is not higher than 80 ℃, so that the external heat source supply device can adopt low-temperature waste heat, namely hot gas required by a heat exchange system is formed by utilizing flue gas waste heat, the low-quality waste heat is utilized, and the running cost is reduced. Meanwhile, the temperature of the gas subjected to heat exchange by the heat exchanger is not more than 80 ℃, and after the hot air is fully contacted with the sludge in the drying bin from bottom to top, the gas in the drying bin is discharged from a drying liquid phase outlet under the action of the gas-water separation device. After the hot air in the drying bin fully contacts with the sludge from bottom to top, the sludge releases interstitial water among sludge particles, and the interstitial water in the gas discharged through the drying liquid phase outlet is still in a liquid state and does not change phase because the temperature of the gas discharged through the drying liquid phase outlet is not more than 50 ℃, so that the moisture is taken away from the surface of the sludge through the gas in the process, and meanwhile, the moisture in the sludge is directly taken out of the drying bin in a liquid form by the gas, and the removal efficiency of the moisture in the sludge is improved; in addition, as the sludge moves downwards in the drying bin under the action of self gravity, and the upper area of the drying bin is wet, the sludge particles are ensured not to be carried out of the drying bin by the air flow through the drying liquid phase outlet, and dust is prevented from being generated; and under the action of the gas-water separation device, the water in the drying bin can be taken away directly in time, so that the requirement of the sludge non-phase change rapid drying equipment on air pressure is reduced, and the running cost is reduced. After the gap water which does not undergo phase change enters the gas-water separation device, the gap water and the air are separated in the gas-water separation device, the gas after the gap water is separated enters the heat exchanger again to be heated, and then enters the drying bin through the drying air inlet to carry out sludge drying, so that the gas circulation in the sludge drying process is realized, the whole process is free of gas discharge, the environment-friendly effect is achieved, meanwhile, the heat exchanger is of an indirect heat exchange structure, cross contamination of the external heat source supply device and the circulating gas in the pipeline of the sludge non-phase change rapid drying equipment is avoided, and the hot gas entering the drying bin through the heat exchanger is not more than 80 ℃ and is low-temperature hot gas, so that pollutants are prevented from being generated in the mixing drying process with sludge particles, the odor is avoided, and the environment-friendly effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a sludge non-phase change quick drying device of the invention;
FIG. 2 is a schematic structural view of a gas-water separation device of a sludge non-phase change rapid drying device;
fig. 3 is a schematic structural diagram of a drying cabin of the sludge non-phase-change rapid drying equipment.
Reference numerals:
1. A drying bin; 101. a desiccation liquid phase outlet; 102. drying a feed inlet; 103. a drying air inlet; 104. a bin housing; 105. an upper cross brace; 106. a lower cross brace; 107. a support seat at the upper end of the rotating shaft; 108. a support at the lower end of the rotating shaft; 109. a rotating shaft; 110. a stirring knife; 111. an equipment failure detector; 112. a dust concentration sensor; 113. an access door; 2. a storage bin; 3. a material conveying device; 301. a crusher; 302. a material conveying machine; 4. a heating device; 401. a heat exchanger; 402. an external heat source heater; 403. a first heat supply pipe; 404. a second heat supply pipe; 5. a gas-water separation device; 501. a gas-water separator; 502. a separator inlet; 503. a first liquid phase outlet; 504. a separator outlet; 505. a water storage pool; 506. a first water storage inlet; 507. a second water storage inlet; 508. a gas-water separation pipeline; 509. a first temperature and humidity sensor; 510. a first liquid flow meter; 511. an induced draft fan; 512. an induced air inlet; 513. an induced air outlet; 514. a dehumidifier; 515. a dehumidifying inlet; 516. a second liquid phase outlet; 517. a dehumidifying outlet; 518. an induced draft pipe; 519. a dehumidifying pipe; 520. a second liquid flow meter; 521. a main airflow pipe; 522. a second temperature and humidity sensor; 523. an oxygen content sensor; 524. a first gas valve; 525. an air flow branch pipe; 526. a gas treatment device; 527. a pressure exhaust valve; 528. an inert gas supply device; 529. a second gas valve; 6. a power system; 601. a motor; 602. a drive chain; 7. a processing system;
Detailed Description
The technical solutions of the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is apparent that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this specification are within the scope of the invention.
Example 1
As shown in fig. 1 to 3, the first embodiment provides a sludge non-phase-change rapid drying apparatus, which includes: the drying bin 1 is provided with a drying liquid phase outlet 101, a drying feed port 102 and a drying air inlet 103, wherein the drying liquid phase outlet 101 is arranged at the upper end of the drying bin 1, the drying feed port 102 is arranged at one side of the middle part of the drying bin 1, and the drying air inlet 103 is arranged at one side of the lower part of the drying bin 1; the storage bin 2 is arranged below the drying bin 1 and is communicated with the drying bin 1; the material conveying device 3 is connected with the drying feed inlet 102; the heat supply device 4 comprises a heat exchanger 401 and an external heat source heat supplier 402, wherein the external heat source heat supplier 402 is connected with the heat exchanger 401 through a plurality of first heat supply pipelines 403, and the heat exchanger 401 is connected with the drying air inlet 103 through a second heat supply pipeline 404; and one end of the gas-water separation device 5 is connected with the heat exchanger 401, and the other end of the gas-water separation device 5 is connected with the drying liquid phase outlet 101.
The invention relates to a sludge non-phase-change rapid drying device which mainly comprises a drying bin, a storage bin, a material conveying device, a heat supply device and a gas-water separation device, wherein a sludge cake is conveyed to the drying bin through the material conveying device, sludge enters the drying bin from a drying feed inlet above the drying bin, and the sludge is dried in the drying bin and then is stored in the storage bin. The external heat source supply device provides a drying heat source, hot air enters the drying bin through the drying air inlet to dry sludge after heat exchange of the heat exchanger, the temperature of the hot air is gradually reduced from bottom to top, the phenomenon that sludge in the lower area of the drying bin is dried and sludge in the upper area of the drying bin is wet is formed, and the temperature of gas after heat exchange of the heat exchanger is not higher than 80 ℃, so that the external heat source supply device can adopt low-temperature waste heat, namely hot gas required by a heat exchange system is formed by utilizing flue gas waste heat, the low-quality waste heat is utilized, and the running cost is reduced. Meanwhile, the temperature of the gas subjected to heat exchange by the heat exchanger is not more than 80 ℃, and after the hot air is fully contacted with the sludge in the drying bin from bottom to top, the gas in the drying bin is discharged from a drying liquid phase outlet under the action of the gas-water separation device. After the hot air in the drying bin fully contacts with the sludge from bottom to top, the sludge releases interstitial water among sludge particles, and the interstitial water in the gas discharged through the drying liquid phase outlet is still in a liquid state and does not change phase because the temperature of the gas discharged through the drying liquid phase outlet is not more than 50 ℃, so that the moisture is taken away from the surface of the sludge through the gas in the process, and meanwhile, the moisture in the sludge is directly taken out of the drying bin in a liquid form by the gas, and the removal efficiency of the moisture in the sludge is improved; in addition, as the sludge moves downwards in the drying bin under the action of self gravity, and the upper area of the drying bin is wet, the sludge particles are ensured not to be carried out of the drying bin by the air flow through the drying liquid phase outlet, and dust is prevented from being generated; and under the action of the gas-water separation device, the water in the drying bin can be taken away directly in time, so that the requirement of the sludge non-phase change rapid drying equipment on air pressure is reduced, and the running cost is reduced. After the gap water which does not undergo phase change enters the gas-water separation device, the gap water and the air are separated in the gas-water separation device, the gas after the gap water is separated enters the heat exchanger again to be heated, and then enters the drying bin through the drying air inlet to carry out sludge drying, so that the gas circulation in the sludge drying process is realized, the whole process is free of gas discharge, the environment-friendly effect is achieved, meanwhile, the heat exchanger is of an indirect heat exchange structure, cross contamination of an external heat source supply device and circulating gas in a pipeline of the sludge non-phase change rapid drying equipment is avoided, and hot gas entering the drying bin through the heat exchanger is not more than 80 ℃ and is low-temperature hot gas, so that the secondary generation of pollutants in the sludge particle mixing drying process is avoided, and the environment-friendly effect is achieved.
In some possible implementations, the sludge non-phase change rapid drying apparatus further includes a power system 6 and a treatment system 7, the power system 6 including: a motor 601; one end of the transmission chain 602 is connected with the motor 601, and the other end of the transmission chain 602 is connected with the drying bin 1; wherein the motor 601, the drying bin 1, the material conveying device 3, the gas-water separation device 5, the heat exchanger 401 and the external heat source heater 402 are electrically connected with the processing system 7 through signal wires.
Specifically, the transmission chain is connected with the rotating shaft, and the motor drives the transmission chain to rotate, so that the rotating shaft is driven to rotate; the processing system collects parameters of the motor, the drying bin, the material conveying device, the gas-water separation device, the heat exchanger and the external heat source heater, and controls the starting and the running of the motor, the drying bin, the material conveying device, the gas-water separation device, the heat exchanger and the external heat source heater.
In some possible implementations, the drying bin 1 further comprises: the drying liquid phase outlet 101 is arranged at the upper end of the bin shell 104, the drying feed inlet 102 is arranged at one side of the middle part of the bin shell 104, the drying air inlet 103 is arranged at one side of the lower part of the bin shell 104, and the storage bin 2is arranged below the bin shell 104 and communicated with the bin shell 104; the heat exchanger 401 is connected with the drying air inlet 103 through the second heat supply pipeline 404; an upper cross brace 105, wherein the upper cross brace 105 is detachably arranged inside the bin housing 104; a lower cross brace 106, wherein the lower cross brace 106 is detachably arranged inside the bin housing 104, and the lower cross brace 106 is arranged below the upper cross brace 105; a rotation shaft upper end support 107, wherein the rotation shaft upper end support 107 is arranged in the middle of the upper cross brace 105; a rotating shaft lower end support 108, wherein the rotating shaft lower end support 108 is arranged in the middle of the lower cross brace 106; a rotating shaft 109, wherein one end of the rotating shaft 109 is rotatably connected with the rotating shaft upper end support 107, and the other end of the rotating shaft 109 is rotatably connected with the rotating shaft lower end support 108; the other end of the rotating shaft 109 is fixedly connected with the connecting end of the rotating shaft lower end support 108 and the other end of the transmission chain 602.
Specifically, one side of the lower part of the bin shell is provided with a drying air inlet, hot gas entering the bin shell through a heat exchanger moves from bottom to top, and goes out through a drying liquid phase outlet arranged at the upper end of the bin shell, dried sludge in the bin shell directly enters a storage bin, and the dried sludge in the storage bin enters the next treatment link matched with the system of the invention; go up the stull and set up inside the storehouse shell with lower stull, and go up the stull and all dismantle the setting with the inside shell of storehouse shell with lower stull, make go up the stull and can handle the volume that obtains mud as required and adjust height from top to bottom in the inside of storehouse shell with lower stull, go up the stull simultaneously and still have supporting role with lower stull, go up the stull and support pivot upper end support, lower stull supports pivot lower extreme support, the both ends of pivot respectively with pivot upper end support and pivot lower extreme support shell swivelling joint, the motor drives the drive chain rotatory so that the pivot is rotatory, the pivot of being convenient for is rotatory inside the storehouse shell, the length of pivot sets up according to the height between last stull and the lower stull.
In some possible implementations, the drying bin 1 further comprises: the stirring blades 110 are arranged in layers at intervals along the axial direction of the rotating shaft 109, and the drying feed inlet 102 is arranged between the upper cross brace 105 and the stirring blades 110 on the first layer; an equipment failure detector 111, the equipment failure detector 111 being disposed on the shaft lower end support 108; a dust concentration sensor 112, the dust concentration sensor 112 being disposed at an upper portion of the bin housing 104; an access door 113, the access door 113 being provided on the housing 104 and being located at one side of the rotation shaft 109; wherein the equipment failure detector 111 and the dust concentration sensor 112 are electrically connected to the processing system 7 through signal lines.
Specifically, two or more than two stirring blades are used as a group, a plurality of groups of stirring blades are arranged in layers at intervals along the axial direction of the rotating shaft, so that a plurality of layers of stirring blades are arranged on the rotating shaft, sludge entering the bin shell is usually sludge particles, the sludge particles are cut and further crushed by the stirring blades rotating around the axis of the rotating shaft when the rotating shaft rotates after entering the bin shell, and the sludge particles are reduced from large to small. The gas with the temperature not higher than 80 ℃ enters the bin shell through the drying air inlet after passing through the heat exchanger, the low-heat gas circulates in the bin shell from top to bottom and is fully mixed with sludge particles, the sludge particles are crushed into fine particles by the stirring knife, meanwhile, interstitial water among the sludge particles is released under the action of the low-heat air, the low-heat air is taken out of the bin shell from the drying liquid phase outlet to enter the gas-water separator by the liquid phase, and meanwhile, under the action of the multi-layer stirring knife and low-temperature hot gas from bottom to top, the sludge particles at the bottom are crushed more finely, the water content of the sludge is also low, the sludge particles with lower water content at the bottom are firstly contacted with the hot gas with higher temperature, the water content can be better removed, and the non-phase change drying effect of the sludge is ensured by combining the fineness of the sludge particles and the integral crushing time control; in addition, the multi-layer stirring blades arranged on the rotating shaft form a vertical structure, sludge particles are crushed from top to bottom through self gravity, so that the energy consumption is greatly reduced, and meanwhile, the structure is simple, the blocking and the maintenance are not easy, the occupied area of the vertical structure is small, and the construction and operation costs are greatly reduced; the equipment fault detector is arranged on the support at the lower end of the rotating shaft and is used for monitoring whether the stirring cutter normally operates or not and feeding back monitoring data to the processing system so that the processing system can control the motor to stop at the first time, the stirring cutter with faults is prevented from further damaging other structural accessories, safety is ensured, and the operation personnel can conveniently overhaul the equipment; the dust concentration sensor is arranged at the upper end of the bin shell and beside the drying liquid phase outlet, and is used for monitoring the dust concentration generated in the bin shell in the drying process and feeding back monitoring data to the processing system so that the processing system can control the fan speed of the induced draft fan under the condition that the dust concentration is large, and excessive dust is prevented from being carried out of the bin shell; the access door is arranged on the bin shell and positioned on one side of the rotating shaft, so that the maintenance of workers after the rotating shaft, the stirring knife and the like are failed is facilitated.
In some possible implementations, the gas-water separation device 5 includes: a gas-water separator 501, said gas-water separator 501 being provided with a separator inlet 502 and a first liquid phase outlet 503; a sump 505, the sump 505 being provided with a first sump inlet 506; two gas-water separation pipelines 508, wherein one end of the first gas-water separation pipeline 508 is connected with the desiccated liquid phase outlet 101, and the other end of the first water separation pipeline 508 is connected with the separator inlet 502; one end of a second gas-water separation pipeline 508 is connected with the first liquid phase outlet 503, and the other end of the second gas-water separation pipeline 508 is connected with the first water storage inlet 506; wherein, a first temperature and humidity sensor 509 is arranged at the connection end between one end of the first gas-water separation pipeline 508 and the dried liquid phase outlet 101; a first liquid flowmeter 510 is arranged at the connecting end of the second first gas-water separation pipeline 508 and the first liquid phase outlet 503; the first temperature and humidity sensor 509 and the first liquid flowmeter 510 are electrically connected to the processing system 7 through signal lines.
Specifically, gap water in the sludge after the drying treatment in the bin shell is in a liquid state and enters a gas-water separator together with gas from a drying liquid phase outlet under the action of an induced draft fan, the gas-water separator can be a cyclone gas-water separator, the liquid gap water and the gas in the gas-water separator are separated, the gas enters the induced draft fan, the separated gap water enters a water storage tank, and water in the water storage tank is discharged after reaching the standard after being treated; the humidity sensor is used for monitoring the concentration of interstitial water in gas from the bin shell and the temperature of the gas from the bin shell, and feeding back monitoring data to the processing system, so that the processing system controls the heat exchanger and the external heat source control device, adjusts the temperature of the gas entering the bin shell, enables interstitial water in sludge to be discharged out of the bin shell in a liquid state form, improves the water content of saturated humid air, is favorable for timely taking away the water between the surface of sludge particles and the sludge, improves the water removal efficiency of the sludge particles and the drying speed of the sludge, and the water content of the saturated humid air at different temperatures is as follows: 559.835g/kg dry air at 80deg.C, 154.820g/kg dry air at 56 ℃, 87.560g/kg dry air at 50deg.C, 27.581g/kg dry air at 30deg.C, 14.897g/kg dry air at 20deg.C, 7.733g/kg dry air at 10deg.C, 3.823g/kg dry air at 0deg.C; the first liquid flowmeter is used for monitoring the flow of gap water separated from the gas-water separator and feeding back monitoring data to the treatment system, so that a worker knows the water quantity separated by the gas-water separator, and the water quantity dehumidified by the dehumidifier and the water content of the sludge feed are combined to know the water content of the discharged material after sludge drying.
In some possible implementations, the gas-water separation device 5 further comprises: the induced draft fan 511, wherein the induced draft fan 511 is provided with an induced draft inlet 512 and an induced draft outlet 513; a dehumidifier 514, said dehumidifier 514 being provided with a dehumidification inlet 515 and a second liquid phase outlet 516; an induced draft pipe 518, wherein one end of the induced draft pipe 518 is connected with the induced draft inlet 512; two dehumidification pipes 519, one end of the first dehumidification pipe 519 is connected to the induced air outlet 513, and the other end of the first dehumidification pipe 519 is connected to the dehumidification inlet 515; one end of a second one of the dehumidification channels 519 is connected to the second liquid phase outlet 516; wherein the gas-water separator 501 is further provided with a separator outlet 504, and the other end of the induced air pipe 518 is connected with the separator outlet 504; the water storage tank 505 is further provided with a second water storage inlet 507, the other end of the second dehumidification pipeline 519 is connected with the second water storage inlet 507, and a second liquid flowmeter 520 is arranged at one end, close to the second water storage inlet 507, of the second dehumidification pipeline 519; the induced draft fan 511, the dehumidifier 514, and the second liquid flow meter 520 are electrically connected to the processing system 7 through signal lines.
Specifically, under the action of an induced draft fan, gas which fully acts with sludge particles in the bin shell enters a gas-water separator and a dehumidifier from a drying liquid phase outlet of the bin shell through a gas-water separation pipeline to separate the gas from the liquid and dehumidify the gas after the liquid is separated, and then the dehumidified gas enters the bin shell again after being heated by a heat exchanger to realize the recycling of the gas; in addition, the processing system controls the induced draft fan to regulate and control the air flow and air pressure in the pipeline of the sludge non-phase change rapid drying equipment, so that low-temperature air entering the bin shell moves from bottom to top, and moisture in the sludge in the bin shell can be taken away directly in time under the action of the induced draft fan, so that the influence of the moisture when sludge particles enter the next layer of stirring knife for crushing is reduced; the dehumidifier carries out further dehumidification and drying on the gas passing through the gas-water separator, so that the gas entering the heat exchanger for the next circulation is prevented from being brought into the bin shell by moisture, and the drying of the sludge and the loss of the heat exchanger are prevented; the water storage tank receives the liquid dehumidified by the dehumidifier, and the water in the water storage tank is discharged after reaching the standard after being treated; the second liquid flowmeter is used for monitoring the water flow removed by the dehumidifier and feeding back monitoring data to the treatment system, so that a worker knows the water quantity removed by the dehumidifier, and the water content of the sludge in combination with the water quantity of the gas-water separator and the water content of the sludge feed are convenient to know the water content of the discharged material after the sludge is dried.
In some possible implementations, the gas-water separation device 5 further comprises: a main airflow pipe 521, one end of the main airflow pipe 521 being connected to the heat exchanger 401; the dehumidifier 514 is further provided with a dehumidifying outlet 517, the other end of the main airflow pipe 521 is connected with the dehumidifying outlet 517, and a second temperature and humidity sensor 522 is disposed at one end of the main airflow pipe 521, which is close to the dehumidifying outlet 517; an oxygen content sensor 523 is disposed between the second temperature and humidity sensor 522 on the main airflow pipe 521 and the heat exchanger 401; a first gas valve 524 is disposed between the oxygen content sensor 523 on the main gas flow pipe 521 and the heat exchanger 401; the second temperature and humidity sensor 522, the oxygen content sensor 523 and the first gas valve 524 are electrically connected to the processing system 7 through signal lines; the gas-water separation device 5 further includes: two gas branch pipes 525, one end of the first gas branch pipe 525 is arranged between the oxygen content sensor 523 and the first gas valve 524 and is connected with the gas main pipe 521, and one end of the second gas branch pipe 525 is arranged between the first gas valve 524 and the heat exchanger 401 and is connected with the gas main pipe 521.
Specifically, the gas dehumidified by the dehumidifier enters the heat exchanger through the main airflow pipeline to be recycled, the second temperature and humidity sensor is used for monitoring the moisture content of the gas dehumidified by the dehumidifier and feeding back monitoring data to the processing system, and when the moisture content of the gas is monitored, the processing system controls the air quantity of the induced draft fan and the dehumidification condition of the dehumidifier so as to achieve the effect that the gas dehumidified by the dehumidifier is free of moisture; the method comprises the steps that a first gas valve is arranged for carrying out exhaust gas treatment on a pipeline of a sludge non-phase change quick drying device, before the sludge non-phase change quick drying device is used, checking the sludge non-phase change quick drying device, ensuring that all equipment of the system is in a good state, starting a treatment system, setting system parameters such as the number of stirring blades and the number of stirring blades at each layer, the speed of a rotating shaft of a motor, the wind speed and the wind quantity of a draught fan, the wind outlet temperature of a heat exchanger and the like according to the requirements of the water content of the sludge fed and the water content of the discharged material, and checking the sludge non-phase change quick drying device again, so that all equipment is in a set parameter state, and meanwhile, the sludge to be treated is prepared; then closing a first gas valve through the treatment system, and opening a pressure exhaust valve and a gas treatment device to enable gas in a pipeline to be unable to circulate; then inert gas is supplied to a pipeline of the sludge non-phase-change quick drying equipment by controlling an inert gas supply device through a processing system, the inert gas sequentially passes through a second air flow branch pipeline, an air flow main pipeline, a heat exchanger, a second heat supply pipeline, a bin shell, a first air-water separation pipeline, an air-water separator, an induced draft pipeline, an induced draft fan, a first dehumidification pipeline, a dehumidifier, an air flow main pipeline, a first air flow branch pipeline, a pressure exhaust valve and a gas processing device to exhaust air in the pipeline, so that the pipeline is filled with the inert gas, when an oxygen content sensor detects that the oxygen content is zero, the first gas valve is opened through the processing system, the pressure exhaust valve and the gas processing device are closed at the same time, and a sludge cake is started to be added after the temperature detected by the first temperature and humidity sensor reaches a set temperature; the oxygen content sensor is used for monitoring whether the pipeline contains oxygen or not, ensuring that air in the pipeline is replaced by the inert gas supply device, monitoring whether the pipeline has a damaged leak to enter the air, ensuring that the sludge non-phase-change quick drying equipment operates in an inert gas environment, avoiding potential safety hazards such as dust explosion and the like, and ensuring the safety of the system.
In some possible implementations, the gas-water separation device 5 further comprises: the gas treatment device 526, the other end of the first gas flow branch pipe 525 is connected with the gas treatment device 526, and a pressure exhaust valve 527 is arranged on the first gas flow branch pipe 525; an inert gas supply device 528, wherein the other end of the second gas branch pipe 525 is connected with the inert gas supply device 528, and a second gas valve 529 is arranged on the second gas branch pipe 525; wherein the pressure exhaust valve 527, the inert gas supply 528 and the second gas valve 529 are electrically connected to the processing system 7 via signal lines.
In particular, the inert gas supply device is used for providing inert gas for the pipeline of the sludge non-phase-change quick drying equipment to replace air in the pipeline, ensuring that the sludge non-phase-change quick drying equipment operates in an inert gas environment, avoiding potential safety hazards such as dust explosion and the like, ensuring the safety of the system, the second gas valve and the pressure exhaust valve monitor the pressure change of a pipeline in the sludge non-phase change quick drying equipment and feed back monitoring data to the processing system, and the processing system controls the closing and opening of the second gas valve through the obtained data so as to control whether to continuously provide inert gas to the pipeline; in addition, the processing system controls the closing and opening of the pressure exhaust valve through the obtained data, the condition that the air pressure of a pipeline is overlarge can occur in the operation process of the sludge non-phase-change quick drying equipment, and when the air pressure in the pipeline is larger than a set value, the pressure exhaust valve is automatically opened to exhaust gas into the gas processing device, so that the safe operation of the system is ensured; the discharged partial gas contains the pollution components existing in the sludge, and enters a gas treatment device for treatment and then is discharged or enters the next treatment link matched with the system of the invention.
In some possible implementations, the feeding device 3 comprises: the crusher 301, wherein the crusher 301 is provided with a crushing discharge hole; the material conveying machine 302 is provided with a material conveying inlet and a material conveying outlet, and the material conveying outlet is connected with the drying inlet 102 and extends into the bin shell 104; the material conveying and feeding port is arranged right below the crushing discharge port; wherein the crusher 301 and the feeder 302 are electrically connected to the processing system 7 via signal lines.
Specifically, the sludge cake entering the crusher is generally mechanically extruded and dehydrated, the water content is about 60%, the sludge cake enters the crusher and is primarily crushed to form sludge particles, the sludge particles enter the conveyor, the sludge particles are conveyed into the shell through the spiral conveyor, the conveyor can be the spiral conveyor, the sludge entering the shell is further crushed from top to bottom through a plurality of layers of stirring blades, the particles are greatly changed, and when the sludge particles are crushed into fine particles through the stirring blades, interstitial water among the sludge particles is released; the processing system controls the crusher and the conveyor to operate.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The sludge non-phase-change quick drying equipment is characterized by comprising:
The drying bin (1), a drying liquid phase outlet (101), a drying feed port (102) and a drying air inlet (103) are arranged on the drying bin (1), the drying liquid phase outlet (101) is arranged at the upper end of the drying bin (1), the drying feed port (102) is arranged at one side of the middle part of the drying bin (1), and the drying air inlet (103) is arranged at one side of the lower part of the drying bin (1);
the storage bin (2) is arranged below the drying bin (1) and is communicated with the drying bin (1);
the material conveying device (3), the material conveying device (3) is connected with the drying feed inlet (102);
The heat supply device (4), the heat supply device (4) comprises a heat exchanger (401) and an external heat source heat supplier (402), the external heat source heat supplier (402) is connected with the heat exchanger (401) through a plurality of first heat supply pipelines (403), and the heat exchanger (401) is connected with the drying air inlet (103) through a second heat supply pipeline (404);
And one end of the gas-water separation device (5) is connected with the heat exchanger (401), and the other end of the gas-water separation device (5) is connected with the desiccation liquid phase outlet (101).
2. The sludge non-phase-change quick drying equipment according to claim 1, characterized in that the sludge non-phase-change quick drying equipment further comprises a power system (6) and a treatment system (7), wherein the power system (6) comprises:
a motor (601);
One end of the transmission chain (602) is connected with the motor (601), and the other end of the transmission chain (602) is connected with the drying bin (1);
The drying bin (1), the material conveying device (3), the gas-water separation device (5), the heat exchanger (401) and the external heat source heater (402) are electrically connected with the processing system (7) through signal lines.
3. A sludge non-phase change rapid drying apparatus as claimed in claim 2, wherein the drying chamber (1) further comprises:
The drying liquid phase outlet (101) is formed in the upper end of the bin shell (104), the drying feed inlet (102) is formed in one side of the middle of the bin shell (104), the drying air inlet (103) is formed in one side of the lower part of the bin shell (104), and the storage bin (2) is arranged below the bin shell (104) and communicated with the bin shell (104); the heat exchanger (401) is connected with the drying air inlet (103) through the second heat supply pipeline (404);
An upper cross brace (105), wherein the upper cross brace (105) is detachably arranged inside the bin shell (104);
the lower cross brace (106) is detachably arranged inside the bin shell (104), and the lower cross brace (106) is arranged below the upper cross brace (105);
A rotating shaft upper end support (107), wherein the rotating shaft upper end support (107) is arranged in the middle of the upper cross brace (105);
a rotating shaft lower end support (108), wherein the rotating shaft lower end support (108) is arranged in the middle of the lower cross brace (106);
one end of the rotating shaft (109) is rotatably connected with the rotating shaft upper end support (107), and the other end of the rotating shaft (109) is rotatably connected with the rotating shaft lower end support (108);
the other end of the rotating shaft (109) is fixedly connected with the connecting end of the rotating shaft lower end support (108) and the other end of the transmission chain (602).
4. A sludge non-phase change rapid drying apparatus as claimed in claim 3, wherein the drying chamber (1) further comprises:
The stirring blades (110) are arranged in a layered manner at intervals along the axial direction of the rotating shaft (109), and the drying feed inlet (102) is arranged between the upper cross brace (105) and the first layer of stirring blades (110);
An equipment fault detector (111), wherein the equipment fault detector (111) is arranged on the support (108) at the lower end of the rotating shaft;
A dust concentration sensor (112), the dust concentration sensor (112) being disposed at an upper portion of the bin housing (104);
An access door (113), the access door (113) being provided on the cartridge housing (104) and being located at one side of the rotation shaft (109);
Wherein the equipment failure detector (111) and the dust concentration sensor (112) are electrically connected with the processing system (7) through signal lines.
5. A sludge non-phase change rapid drying apparatus as claimed in claim 4, wherein the gas-water separation device (5) comprises:
A gas-water separator (501), the gas-water separator (501) being provided with a separator inlet (502) and a first liquid phase outlet (503);
-a water reservoir (505), the water reservoir (505) being provided with a first water reservoir inlet (506);
Two gas-water separation pipelines (508), wherein one end of the first gas-water separation pipeline (508) is connected with the desiccated liquid phase outlet (101), and the other end of the first gas-water separation pipeline (508) is connected with the separator inlet (502); one end of a second gas-water separation pipeline (508) is connected with the first liquid phase outlet (503), and the other end of the second gas-water separation pipeline (508) is connected with the first water storage inlet (506);
Wherein, a first temperature and humidity sensor (509) is arranged at the connecting end of one end of the first gas-water separation pipeline (508) and the drying liquid phase outlet (101); a first liquid flowmeter (510) is arranged at the connecting end of the second first gas-water separation pipeline (508) and the first liquid phase outlet (503); the first temperature and humidity sensor (509) and the first liquid flowmeter (510) are electrically connected with the processing system (7) through signal wires.
6. A sludge non-phase change rapid drying apparatus as claimed in claim 5, wherein the gas-water separation device (5) further comprises:
The induced draft fan (511) is provided with an induced draft inlet (512) and an induced draft outlet (513);
-a dehumidifier (514), the dehumidifier (514) being provided with a dehumidification inlet (515) and a second liquid phase outlet (516);
an induced draft pipe (518), one end of the induced draft pipe (518) is connected with the induced draft inlet (512);
Two dehumidification pipes (519), one end of the first dehumidification pipe (519) is connected with the induced air outlet (513), and the other end of the first dehumidification pipe (519) is connected with the dehumidification inlet (515); one end of a second one of the dehumidification pipes (519) is connected with the second liquid phase outlet (516);
wherein the gas-water separator (501) is further provided with a separator outlet (504), and the other end of the induced air pipeline (518) is connected with the separator outlet (504); the water storage tank (505) is further provided with a second water storage inlet (507), the other end of the second dehumidification pipeline (519) is connected with the second water storage inlet (507), and a second liquid flowmeter (520) is arranged at one end, close to the second water storage inlet (507), of the second dehumidification pipeline (519); the induced draft fan (511), the dehumidifier (514) and the second liquid flowmeter (520) are electrically connected with the processing system (7) through signal wires.
7. A sludge non-phase change rapid drying apparatus as claimed in claim 6, wherein the gas-water separation device (5) further comprises:
a main airflow pipe (521), one end of the main airflow pipe (521) being connected to the heat exchanger (401);
The dehumidifier (514) is further provided with a dehumidification outlet (517), the other end of the main airflow pipeline (521) is connected with the dehumidification outlet (517), and a second temperature and humidity sensor (522) is arranged at one end, close to the dehumidification outlet (517), of the main airflow pipeline (521); an oxygen content sensor (523) is arranged between the second temperature and humidity sensor (522) on the main airflow pipeline (521) and the heat exchanger (401); a first gas valve (524) is arranged between the oxygen content sensor (523) on the main gas flow pipeline (521) and the heat exchanger (401); the second temperature and humidity sensor (522), the oxygen content sensor (523) and the first gas valve (524) are electrically connected with the processing system (7) through signal wires.
8. The sludge non-phase-change rapid drying equipment as claimed in claim 7, wherein the gas-water separation device (5) further comprises:
Two air flow branch pipes (525), one end of the first air flow branch pipe (525) is arranged between the oxygen content sensor (523) and the first air valve (524) and is connected with the air flow main pipe (521), and one end of the second air flow branch pipe (525) is arranged between the first air valve (524) and the heat exchanger (401) and is connected with the air flow main pipe (521).
9. The sludge non-phase-change rapid drying equipment as claimed in claim 8, wherein the gas-water separation device (5) further comprises:
a gas treatment device (526), wherein the other end of the first gas flow branch pipeline (525) is connected with the gas treatment device (526), and a pressure exhaust valve (527) is arranged on the first gas flow branch pipeline (525);
an inert gas supply device (528), wherein the other end of the second gas branch pipeline (525) is connected with the inert gas supply device (528), and a second gas valve (529) is arranged on the second gas branch pipeline (525);
wherein the pressure exhaust valve (527), the inert gas supply device (528) and the second gas valve (529) are electrically connected to the processing system (7) by signal lines.
10. A sludge non-phase change rapid drying apparatus as claimed in claim 9, wherein the feeding means (3) comprises:
a crusher (301), the crusher (301) being provided with a crushing outlet;
The material conveying machine (302), the material conveying machine (302) is provided with a material conveying inlet and a material conveying outlet, and the material conveying outlet is connected with the drying inlet (102) and extends into the bin shell (104); the material conveying and feeding port is arranged right below the crushing discharge port;
Wherein the crusher (301) and the feeder (302) are electrically connected with the processing system (7) by means of signal lines.
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Application publication date: 20240503 |