CN217677257U - Water film dust removal system of sludge low-temperature belt type drying machine - Google Patents
Water film dust removal system of sludge low-temperature belt type drying machine Download PDFInfo
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- CN217677257U CN217677257U CN202220956991.0U CN202220956991U CN217677257U CN 217677257 U CN217677257 U CN 217677257U CN 202220956991 U CN202220956991 U CN 202220956991U CN 217677257 U CN217677257 U CN 217677257U
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Abstract
The utility model relates to a water film dust removal system of a sludge low-temperature belt type drier, belonging to the technical field of sludge treatment equipment; the water film dedusting system and the dehumidification heat pump module are both arranged on one side of the belt dryer, a secondary fan is fixedly arranged in the middle between the belt dryer and the dehumidification heat pump module, and the water outlet end of the dehumidification heat pump module is connected with a sewer pipe network; the water film dust pelletizing system includes: the water film dedusting ground water tank system is arranged on the ground on one side of the belt dryer; a circulating fan is fixedly arranged at the bottom between the water film dedusting ground water tank system and the belt dryer, and the output end of the circulating fan is communicated with the input end of the belt dryer; the water film dust remover module is arranged at an air return port at the top end of the belt dryer, and a silk screen demister is arranged on one side of the water film dust remover module; the heat pump has multiple functions of dehumidification, dust removal, desalination, deodorization and the like, protects the heat pump from electrochemical corrosion of acid, alkali, salt and the like, and has the advantages of reliable operation, low energy consumption and long service life.
Description
Technical Field
The utility model relates to a sludge treatment equipment technical field, concretely relates to mud low temperature belt drier water film dust pelletizing system.
Background
With the increasing market demand of sludge drying, the technology of the low-temperature sludge drying machine has the outstanding advantages of no odor emission to the outside due to the cleanness, tidiness and sealing, and the like, and is accepted by more and more environment-friendly enterprise users. However, at the beginning of the design of such equipment, most designers have no deep understanding on the sludge property, only design an apparent dust removal system, neglect the problem of accumulation of the concentration of malodorous gases in the internal aspect, and dissolve the malodorous gases into condensed water to form acid-base salts, which causes early corrosion of aluminum foils, copper tubes and welding lines of a heat pump system. In traditional sludge drying process, along with mud is mummification from outside to inside gradually, mud granule surface water film evaporates gradually, the inside moisture of mud granule is gradually to surface diffusion, the mixed foul gases such as hydrogen sulfide, ammonia that originally are dissolved in aquatic are released gradually, the circulated air is once circulated, foul gas concentration will increase a little, in the 2h cycle of mud mummification, the circulated air circulates for thousands of times, the foul concentration accumulation is very high, these high concentration mixed foul, high concentration humid air, corrosivity is very powerful and far surpasses single gaseous chemical corrosion. If the cleaning is not carried out in time, the cleaning agent can be quickly dissolved in water again near the welding seam of the copper tube fin of the evaporator, so that severe electrochemical corrosion is caused, and the shutdown failure of the equipment due to early liquid leakage is caused; therefore, a water film dedusting system of a sludge low-temperature belt type drier is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a simple structure, reasonable in design, convenient to use's mud low temperature belt drier water film dust pelletizing system possesses multinomial functions such as dehumidification, dust removal, desalination, deodorization, and the protection heat pump does not receive electrochemical corrosion such as acid-base salt, and simultaneously, the operation is reliable, and the energy consumption is low, long service life.
In order to achieve the above object, the utility model adopts the following technical scheme: the system comprises a belt dryer, a water film dedusting system and a dehumidification heat pump module; the water film dedusting system and the dehumidifying heat pump module are both arranged on one side of the belt dryer, a secondary fan is fixedly arranged in the middle between the belt dryer and the dehumidifying heat pump module, and the water outlet end of the dehumidifying heat pump module is connected with a sewer pipe network; one side of water film dust pelletizing system is fixed and is provided with the baffle that keeps out the wind, water film dust pelletizing system contain:
the water film dedusting ground water tank system is arranged on the ground at one side of the belt dryer; a circulating fan is fixedly arranged at the bottom between the water film dedusting ground water tank system and the belt dryer, and the output end of the circulating fan is communicated with the input end of the belt dryer;
the water film dust collector module is arranged at an air return port at the top end of the belt dryer, a silk screen demister is arranged on one side of the water film dust collector module, and a dehumidification heat pump module is arranged on one side of the silk screen demister; the water dust scrubber module comprises:
the stainless steel shell is arranged on the top surface of the belt dryer, one side of the stainless steel shell is provided with an air inlet, and the air inlet is communicated with an air return inlet at the top end of the belt dryer; a plurality of air outlets are formed on the top surface of the stainless steel shell; the bottom surface of the stainless steel shell is fixedly connected with a bracket which is fixedly arranged on the top surface of the belt dryer;
the water receiving tray is fixedly arranged on the bottom surface of the stainless steel shell, one side of the water receiving tray is provided with a water outlet, and a water return pipe is fixedly communicated with the water outlet;
the multi-blade hollow ball is fixedly arranged inside the stainless steel shell;
the spraying pipe is fixedly arranged in the middle of the multi-blade hollow ball, a water inlet is formed in the upper side of the spraying pipe, a water inlet pipe is fixedly connected to the water inlet, and the lower end of the water inlet pipe is connected with a water film dedusting ground water tank system; the water film dust removal ground water tank system contain:
the water storage tank is arranged on the bottom surface of one side of the belt dryer, and a sedimentation tank is arranged in the water storage tank;
the circulating water tank is arranged on the bottom surface of one side of the water storage tank and communicated with the inside of the water storage tank through a pipeline; the lower end of the water inlet pipe is communicated with the interior of the circulating water tank;
and the drain pipe is fixedly communicated with the bottom surface of the water storage tank.
By adopting the technical scheme, cold dry air with the relative humidity of 10-15% is heated to 65-67 ℃ by a condenser in a dehumidification heat pump module, the cold dry air is sent to the lower layer mesh belt of a belt dryer from an air inlet at the bottom of the belt dryer by a circulating fan at a positive pressure of 2000pa, three layers of mesh belt ventilation mesh holes are arranged in a Z shape, the cold dry air uniformly flows through each wet sludge cloth layer with the thickness of 80mm, at the moment, the air speed is 2-3m/s, because a water film on the surface of sludge particles and the surrounding air interface have a relative humidity gradient, steam partial pressure is generated, the hot air carries out diffused steam on the surface of wet sludge, the diffused steam continues to flow to the upper layer mesh belt, the wet steam of sludge is carried out continuously, finally more steam is carried out from the uppermost layer, namely the third layer, the steam passes through the three layer mesh belts, at the moment, the air speed is reduced to 0.5-1m/s, the steam temperature is reduced from 60-65 ℃ layer by layer, the layer by layer, and the relative humidity is accumulated to 92-98% close to saturation; the dry air continuously flows through the 3 layers, and simultaneously carries a large amount of odor such as water vapor, dust, hydrogen sulfide, ammonia gas, acid, alkali, salt and the like;
the nearly saturated steam wrapped with a large amount of dust and odor is sucked into an air inlet of the water film dust remover module, a spray pipe is arranged at the top of the water film dust remover module, a spray nozzle on the spray pipe sprays uniform water columns to the inner surface and the outer surface of the multi-blade hollow sphere to form uniform water films, and the water films in each water film dust remover module accumulate 100 to 300 square meters of specific surface area to quickly absorb a large amount of dust and malodorous gases such as ammonia gas, hydrogen sulfide and the like; the washed clean saturated vapor is discharged into a heat regenerator of the dehumidification heat pump module through a wire mesh demister;
the clean air of saturated vapor is cooled and decelerated by the heat exchanger of the dehumidification heat pump module, enters the surface of the evaporator in the dehumidification heat pump module, is condensed into condensed water when meeting the condensation, is collected in a water receiving and collecting device in the dehumidification heat pump module and is discharged into a sewer pipe network; after condensation, the dry air enters a heat regenerator in the dehumidification heat pump module to absorb heat, and the surface of a condenser in the dehumidification heat pump module is heated to 65 ℃ for the second time; under the action of negative pressure suction of a circulating fan, the air is sent into a bottommost air distribution chamber of the belt dryer through an air inlet at the bottom of the belt dryer, air is distributed upwards uniformly at a positive pressure of 2000pa, flows through a bottommost screen plate and a sludge material layer, continues to flow through an upper mesh belt to carry out water vapor on the surface of sludge particles, and reaches a state that the relative humidity of the water vapor brought out by the third layer of flowing air is 92-98% and is close to saturation, the air speed is 1m/s, and the air speed is 32-35 ℃; and the water film dust collector module enters the dehumidification heat pump module, and the steps are repeated in this way.
Compared with the prior art, the utility model discloses beneficial effect does:
1. the heat pump has multiple functions of dehumidification, dust removal, desalination, deodorization and the like, and protects the heat pump from electrochemical corrosion of acid, alkali, salt and the like;
2. according to the specific properties of municipal and industrial sludge, when the circulating air is controlled and guided to pass through the water film dust collector module every time, the large and small particle dust, the malodorous gas and the high-salt gas wrapped by the wet air are washed once, the particles collide with the water film for thousands of times, the particle dust, the malodorous gas and the high-salt gas are dissolved in the water film and are taken away, the high-humidity air is insoluble in water, the high-humidity air washed at the outlet is ensured to be in a clean state, and an evaporator copper pipe and heat exchanger fins in the dehumidification heat pump module are ensured not to be corroded electrochemically. The water film dust collector module ensures that the low-temperature drier does not replace low-efficiency heat exchange corrosion-resistant 316L material, prolongs the service life of the dehumidification heat pump module, and realizes the sealing and no odor of the low-temperature sludge drier in the true sense.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the water dust scrubber module of the present invention.
Fig. 3 is a schematic structural diagram of the water film dedusting system of the present invention.
Description of reference numerals:
the device comprises a belt dryer 1, a dehumidification heat pump module 2, a secondary fan 3, a wind baffle 4, a circulating fan 5, a water film dedusting system 6, a water film deduster module 6-1, a stainless steel shell 6-1-1, an air inlet 6-1-2, an air outlet 6-1-3, a support 6-1-4, a water pan 6-1-5, a water outlet 6-1-6, a water return pipe 6-1-7, multi-blade hollow spheres 6-1-8, a spray pipe 6-1-9, a water inlet 6-1-10, a water inlet pipe 6-1-11, a water film dedusting ground water tank system 6-2, a water storage tank 6-2-1, a sedimentation tank 6-2-2, a circulating water tank 6-2-3, a water discharge pipe 6-2-4 and a screen foam remover 7.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-3, the present embodiment comprises a belt dryer 1, a water film dust removal system 6 and a dehumidification heat pump module 2; the water film dedusting system 6 and the dehumidification heat pump module 2 are both arranged on one side of the belt dryer 1, the secondary fan 3 is fixedly arranged in the middle between the belt dryer 1 and the dehumidification heat pump module 2, and the water outlet end of the dehumidification heat pump module 2 is connected with a sewer pipe network; one side of water film dust pelletizing system 6 is fixed and is provided with baffle 4 that keeps out the wind, water film dust pelletizing system 6 contain:
the water film dedusting ground water tank system 6-2 is arranged on the ground at one side of the belt dryer 1, and the water film dedusting ground water tank system 6-2 is arranged on the ground at one side of the belt dryer 1; a circulating fan 5 is fixedly arranged at the bottom between the water film dedusting ground water tank system 6-2 and the belt dryer 1, and the output end of the circulating fan 5 is communicated with the input end of the belt dryer 1;
the system comprises a water film dust collector module 6-1, wherein the water film dust collector module 6-1 is arranged at an air return port at the top end of a belt dryer 1, a silk screen demister 7 is arranged on one side of the water film dust collector module 6-1, and a dehumidification heat pump module 2 is arranged on one side of the silk screen demister 7; the water dust scrubber module 6-1 comprises:
the device comprises a stainless steel shell 6-1-1, wherein the stainless steel shell 6-1-1 is arranged on the top surface of a belt dryer 1, one side of the stainless steel shell 6-1-1 is provided with an air inlet 6-1-2, and the air inlet 6-1-2 is communicated with an air return opening at the top end of the belt dryer 1; the top surface of the stainless steel shell 6-1-1 is provided with a plurality of air outlets 6-1-3; the bottom surface of the stainless steel shell 6-1-1 is fixedly connected with a bracket 6-1-4, and the bracket 6-1-4 is fixedly arranged on the top surface of the belt dryer 1;
the water receiving tray 6-1-5 is fixedly arranged on the bottom surface of the stainless steel shell 6-1-1, one side of the water receiving tray 6-1-5 is provided with a water outlet 6-1-6, and the water outlet 6-1-6 is fixedly communicated with a water return pipe 6-1-7;
the multi-blade hollow ball 6-1-8 is fixedly arranged inside the stainless steel shell 6-1-1;
the spraying pipe 6-1-9 is fixedly arranged in the middle of the multi-blade hollow ball 6-1-8, a water inlet 6-1-10 is formed in the upper side of the spraying pipe 6-1-9, a water inlet pipe 6-1-11 is fixedly connected to the water inlet 6-1-10, and the lower end of the water inlet pipe 6-1-11 is connected with a water film dedusting ground water tank system 6-2; the water film dedusting ground water tank system 6-2 comprises:
a water storage tank 6-2-1, wherein the water storage tank 6-2-1 is arranged on the bottom surface of one side of the belt dryer 1, and a sedimentation tank 6-2-2 is arranged inside the water storage tank 6-2-1;
the circulating water tank 6-2-3 is arranged on the bottom surface of one side of the water storage tank 6-2-1, and the circulating water tank 6-2-3 is communicated with the inside of the water storage tank 6-2-1 through a pipeline; the lower end of the water inlet pipe 6-1-11 is communicated with the inside of the circulating water tank 6-2-3;
the water discharge pipe 6-2-4 is fixedly communicated with the water discharge pipe 6-2-4 and is arranged on the bottom surface of the water storage tank 6-2-1.
When using the utility model discloses the time:
the first step is as follows: after the sludge with the water content of 80 percent is subjected to spiral stirring and impurity removal, the sludge is conveyed into a belt dryer 1 by a shaftless spiral, the sludge is uniformly distributed and the thickness of the cloth is 80mm, the sludge is sequentially conveyed into an upper mesh belt of the belt dryer 1, the sludge is sequentially conveyed into a middle mesh belt and a lower mesh belt through zigzag conveying, and gradient drying is performed layer by layer;
the second step is that: the condenser in the dehumidification heat pump module 2 heats cold dry air with relative humidity of 10-15% to 65-67 ℃, the cold dry air is sent to the lower layer mesh belt of the belt dryer 1 from an air inlet 6-1-2 at the bottom of the belt dryer 1 by positive pressure 2000pa through a circulating fan 5, three layers of mesh belt ventilation mesh holes are arranged in a Z shape, the cold dry air uniformly flows through each wet sludge distribution layer with the thickness of 80mm, at the moment, the air speed is 2-3m/s, because a relative humidity gradient exists between a water film on the surface of sludge particles and the surrounding air interface, steam partial pressure is generated, the hot air brings out diffusion steam on the surface of wet sludge, the diffusion steam continues to flow to the upper layer mesh belt, the wet sludge steam is continuously brought out, finally more steam is brought out from the uppermost layer, namely the third layer mesh belt, the steam passes through the three layers of mesh belts, at the moment, the air speed is reduced to 0.5-1m/s, the steam temperature is reduced to 32-35 ℃ layer by layer from 60-65 ℃, and the cumulative relative humidity is close to saturation; the dry air continuously flows through the 3 layers, and simultaneously carries a large amount of odor such as water vapor, dust, hydrogen sulfide, ammonia gas, acid, alkali, salt and the like;
the third step: the nearly saturated steam wrapped with a large amount of dust and odor is sucked into an air inlet 6-1-2 of a water film dust collector module 6-1, a spray pipe 6-1-9 is arranged at the top of the water film dust collector module 6-1, a nozzle on the spray pipe 6-1-9 sprays uniform water columns to the inner surface and the outer surface of a multi-blade hollow sphere 6-1-8 to form uniform water films, and the water films in each water film dust collector module 6-1 accumulate 100-300 square meters of specific surface area to rapidly absorb dust and a large amount of malodorous gases such as ammonia gas, hydrogen sulfide and the like; the washed clean saturated steam is discharged into a heat regenerator of the dehumidification heat pump module 2 through a wire mesh demister 7;
the fourth step: the clean air of saturated vapor is cooled and decelerated by the heat exchanger of the dehumidification heat pump module 2, enters the surface of an evaporator in the dehumidification heat pump module 2, is condensed into condensed water when meeting the condensation, is collected in a water receiving and collecting device in the dehumidification heat pump module 2 and is discharged into a sewer pipe network; after condensation, the dry air enters a heat regenerator in the dehumidification heat pump module 2 to absorb heat, and the surface of a condenser entering the dehumidification heat pump module 2 is heated to 65 ℃ for the second time; under the action of negative pressure suction of a circulating fan 5, the air is sent into an air distribution chamber at the lowest part of a belt dryer 1 through an air inlet 6-1-2 at the bottom of the belt dryer 1, air is distributed upwards uniformly at a positive pressure of 2000pa, flows through a net plate at the lowest layer and a sludge material layer, continues to flow through an upper layer of net belt to carry out water vapor on the surface of sludge particles, and reaches the temperature of 32-35 ℃ when the relative humidity of the water vapor brought out by flowing air at a third layer is 92-98% and is close to saturation; passes through the water film dust collector module 6-1 and enters the dehumidifying heat pump module 2, and the cycle is repeated.
After adopting above-mentioned structure, this embodiment beneficial effect does:
1. the heat pump has multiple functions of dehumidification, dust removal, desalination, deodorization and the like, and protects the heat pump from electrochemical corrosion of acid, alkali, salt and the like;
2. according to the specific properties of municipal and industrial sludge, when the guide circulating air passes through the water film dust collector module 6-1 each time, the large and small particle dust, malodorous gas and high-salt gas wrapped by the humid air are washed once, the particles collide with the water film for thousands of times, the particle dust, the malodorous gas and the high-salt gas are taken away in the water film, the high-humidity air is insoluble in water, the high-humidity air washed at the outlet is ensured to be in a clean state, and the evaporator copper pipe and the heat exchanger fins in the dehumidification heat pump module 2 are ensured not to be corroded electrochemically. The water film dust collector module 6-1 ensures that the low-temperature drier does not replace low-efficiency heat exchange corrosion-resistant 316L material, prolongs the service life of the dehumidification heat pump module 2, and realizes the sealing and no odor of the sludge low-temperature drier in the true sense.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. Mud low temperature belt drier water film dust pelletizing system, its characterized in that: the system comprises a belt dryer (1), a water film dedusting system (6) and a dehumidification heat pump module (2); the water film dedusting system (6) and the dehumidification heat pump module (2) are both arranged on one side of the belt dryer (1), a secondary fan (3) is fixedly arranged in the middle between the belt dryer (1) and the dehumidification heat pump module (2), and the water outlet end of the dehumidification heat pump module (2) is connected with a sewer pipe network; one side of water film dust pelletizing system (6) is fixed and is provided with baffle (4) that keep out the wind, water film dust pelletizing system (6) contain:
the water film dedusting ground water tank system (6-2), the water film dedusting ground water tank system (6-2) is arranged on the ground at one side of the belt dryer (1); a circulating fan (5) is fixedly arranged at the bottom between the water film dedusting ground water tank system (6-2) and the belt dryer (1), and the output end of the circulating fan (5) is communicated with the input end of the belt dryer (1);
the water film dust collector module (6-1) is arranged at an air return port at the top end of the belt dryer (1), a silk screen demister (7) is arranged on one side of the water film dust collector module (6-1), and a dehumidification heat pump module (2) is arranged on one side of the silk screen demister (7); the water dust scrubber module (6-1) comprises:
the device comprises a stainless steel shell (6-1-1), wherein the stainless steel shell (6-1-1) is arranged on the top surface of the belt dryer (1), one side of the stainless steel shell (6-1-1) is provided with an air inlet (6-1-2), and the air inlet (6-1-2) is communicated with an air return opening at the top end of the belt dryer (1); a plurality of air outlets (6-1-3) are arranged on the top surface of the stainless steel shell (6-1-1); the bottom surface of the stainless steel shell (6-1-1) is fixedly connected with a bracket (6-1-4), and the bracket (6-1-4) is fixedly arranged on the top surface of the belt dryer (1);
the water receiving tray (6-1-5) is fixedly arranged on the bottom surface of the stainless steel shell (6-1-1), one side of the water receiving tray (6-1-5) is provided with a water outlet (6-1-6), and the water outlet (6-1-6) is fixedly communicated with a water return pipe (6-1-7);
the multi-blade hollow ball (6-1-8) is fixedly arranged inside the stainless steel shell (6-1-1);
the water-saving dedusting system comprises spray pipes (6-1-9), wherein the spray pipes (6-1-9) are fixedly arranged in the middle of multi-blade hollow spheres (6-1-8), a water inlet (6-1-10) is formed in the upper side of each spray pipe (6-1-9), a water inlet pipe (6-1-11) is fixedly connected to each water inlet (6-1-10), and the lower end of each water inlet pipe (6-1-11) is connected with a water film dedusting ground water tank system (6-2); the water film dedusting ground water tank system (6-2) comprises:
the water storage tank (6-2-1), the water storage tank (6-2-1) is arranged on the bottom surface of one side of the belt dryer (1), and a sedimentation tank (6-2-2) is arranged in the water storage tank (6-2-1);
the circulating water tank (6-2-3), the circulating water tank (6-2-3) is arranged on the bottom surface of one side of the water storage tank (6-2-1), and the circulating water tank (6-2-3) is communicated with the inside of the water storage tank (6-2-1) through a pipeline; the lower end of the water inlet pipe (6-1-11) is communicated with the inside of the circulating water tank (6-2-3);
the water discharge pipe (6-2-4), the water discharge pipe (6-2-4) is fixedly communicated with the bottom surface of the water storage tank (6-2-1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220956991.0U CN217677257U (en) | 2022-04-25 | 2022-04-25 | Water film dust removal system of sludge low-temperature belt type drying machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220956991.0U CN217677257U (en) | 2022-04-25 | 2022-04-25 | Water film dust removal system of sludge low-temperature belt type drying machine |
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| CN217677257U true CN217677257U (en) | 2022-10-28 |
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| CN202220956991.0U Active CN217677257U (en) | 2022-04-25 | 2022-04-25 | Water film dust removal system of sludge low-temperature belt type drying machine |
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