CN214693829U

CN214693829U - Sludge low-temperature belt type drying system

Info

Publication number: CN214693829U
Application number: CN202120037711.1U
Authority: CN
Inventors: 段志勇
Original assignee: Kedil Energy Equipment Tianjin Co ltd
Current assignee: Cordier Environmental Technology Hebei Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-12
Anticipated expiration: 2031-01-08

Abstract

The utility model provides a mud low temperature belt mummification system, the utility model relates to a sludge treatment technical field, by supreme lower bed defeated material guipure that is equipped with in proper order in the shell, defeated material guipure in middle level and the defeated material guipure in upper strata, and the defeated material guipure of lower floor, the defeated material guipure in middle level and the defeated material guipure in upper strata are "Z" shape and distribute the setting, be located and be equipped with discharging device in the shell of the defeated material guipure below of lower floor, be located and be fixed with the water film dust remover in the shell of the defeated material guipure top in upper strata, the outside of the shell that is located water film dust remover right side is equipped with the cloth machine, the discharge gate and the shell of cloth machine link up the setting, and the discharge gate of cloth machine sets up in the tip top of the defeated material guipure of upper strata. 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

Sludge low-temperature belt type drying system

Technical Field

The utility model relates to a sludge treatment technical field, concretely relates to mud low temperature belt mummification system.

Background

With the increasing market demand of sludge drying, the low-temperature sludge drying technology is more and more favored by a plurality of environment-friendly enterprises. The low-temperature dryer is accepted by more and more customers due to the outstanding advantages of cleanness, tidiness, sealing, no odor emission to the outside and the like. However, at the beginning of the design of the equipment, most designers have no deep understanding of the sludge property, only design a dust removal system, and ignore the problem of odor concentration accumulation, so as to cause early corrosion of a heat pump system. Along with the sludge drying from outside to inside, the water film on the surface of the sludge particles is gradually evaporated, the water inside the sludge particles is gradually diffused to the surface, the malodorous gas such as hydrogen sulfide, ammonia and the like originally dissolved in the water is gradually released, the concentration of the malodorous gas is increased every time the circulating air circulates, and the circulating air circulates for thousands of times within 2h of the sludge drying, so that the malodorous concentration is accumulated very high, and the high-concentration malodorous, high-concentration and high-humidity air has very strong corrosivity. 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 pipe fin of the evaporator, so that severe electrochemical corrosion is caused, and the early liquid leakage and shutdown failure of the equipment is caused. This is a serious quality problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a reasonable in design's mud low temperature belt mummification system, possess multinomial functions such as dehumidification, dust removal, desalination, deodorization, the protection heat pump does not receive electrochemical corrosion such as acid-base salt, and the operation is reliable, and the energy consumption is low, long service life.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the system comprises a belt dryer, a dehumidification heat pump module, a material distributor, a water film dust remover and a water tank; the belt dryer is composed of a lower layer material conveying mesh belt, a middle layer material conveying mesh belt, an upper layer material conveying mesh belt, a discharging device and a shell; a lower-layer material conveying mesh belt, a middle-layer material conveying mesh belt and an upper-layer material conveying mesh belt are sequentially arranged in the shell from bottom to top, the lower-layer material conveying mesh belt, the middle-layer material conveying mesh belt and the upper-layer material conveying mesh belt are distributed in a Z shape, a discharging device is arranged in the shell below the lower-layer material conveying mesh belt, a water film dust remover is fixed in the shell above the upper-layer material conveying mesh belt, a material distributing machine is arranged outside the shell on the right side of the water film dust remover, a discharging port of the material distributing machine is communicated with the shell, and a discharging port of the material distributing machine is arranged above the end part of the upper-layer material conveying mesh belt; the water film dust remover consists of a water receiving disc, an air inlet, a spray pipe, an air outlet, a water inlet, a stainless steel shell, pall ring packing, a water outlet pipe and a bracket; the front side wall and the rear side wall of the stainless steel shell are respectively provided with an air inlet, a screen plate is embedded in the air inlet, an air outlet is arranged in the stainless steel shell above the air inlet, the air outlet is communicated with a cavity inside the shell of the dehumidification heat pump module, the top of the stainless steel shell is communicated with a water inlet, the water inlet is communicated with a spray pipe arranged at the top in the stainless steel shell, a nozzle is communicated with the spray pipe, pall ring fillers are filled in the stainless steel shell, the bottom of the stainless steel shell is communicated with a water receiving disc which is arranged in an inclined manner, the inclined bottom is communicated with a water outlet pipe, a bracket is fixed on the stainless steel shell at one side of the water outlet pipe, the bracket is erected and fixed on a transverse plate in the shell, the water outlet pipe is communicated with the water inlet of the water tank by a pipeline, the water outlet of the water tank is communicated with the water inlet by a pipeline, and the water tank is arranged at the outer side of the dehumidification heat pump module, the dehumidification heat pump module further comprises a centrifugal fan, an evaporator, a heat regenerator and a condenser; the air outlet of the evaporator is connected with a heat regenerator in a run-through manner, and a liquid receiving disc at the bottom of the evaporator is connected with an external pipe network in a run-through manner by utilizing a pipeline; the air outlet of the heat regenerator is connected with a condenser in a run-through manner, and the centrifugal fan is arranged at the air outlet of the condenser.

After the structure is adopted, the beneficial effects of the utility model are that: the utility model provides a mud low temperature belt mummification system, the abundant analysis mud nature when circulated through the water film deduster at the circulated air at every turn, the humid air wraps up in the big and small granule dust, foul gas of holding under hand, and high salt gas is all washed once, and these granule collide with the water film for thousands of times, ensure that the exit is in clean state through the high humid air of washing, ensure evaporimeter copper pipe, heat exchanger fin, no longer receive electrochemical corrosion. Not only ensures that the material is not changed and the service life of the heat pump is not influenced to be prolonged, but also realizes the sealing without odor in the true sense of the low-temperature sludge drier.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a schematic structural diagram of the reclaimed water film dust collector of the present invention.

Description of reference numerals:

the device comprises a centrifugal fan 1, a lower-layer material conveying mesh belt 2, a middle-layer material conveying mesh belt 3, an upper-layer material conveying mesh belt 4, a material distributor 5, a water film dust remover 6, a water pan 6-1, an air inlet 6-2, a spray pipe 6-3, an air outlet 6-4, a water inlet 6-5, a stainless steel shell 6-6, pall ring packing 6-7, a water outlet pipe 6-8, a support 6-9, an evaporator 7, a heat regenerator 8, a condenser 9, a water tank 10, a discharging device 11 and a shell 12.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to fig. 3, the following technical solutions are adopted in the present embodiment: the system comprises a belt dryer, a dehumidification heat pump module, a material distributor 5, a water film dust remover 6 and a water tank 10; wherein the belt dryer is composed of a lower layer material conveying mesh belt 2, a middle layer material conveying mesh belt 3, an upper layer material conveying mesh belt 4, a discharging device 11 and a shell 12; a lower-layer material conveying mesh belt 2, a middle-layer material conveying mesh belt 3 and an upper-layer material conveying mesh belt 4 are sequentially arranged in the shell 12 from bottom to top, the lower-layer material conveying mesh belt 2, the middle-layer material conveying mesh belt 3 and the upper-layer material conveying mesh belt 4 are distributed in a Z shape, a discharging device 11 is arranged in the shell 12 below the lower-layer material conveying mesh belt 2, a discharging port (not shown in the figure) is formed in the shell 12 corresponding to the discharging device 11, a water film dust remover 6 is fixed in the shell 12 above the upper-layer material conveying mesh belt 4, a material distributor 5 is arranged outside the shell 12 on the right side of the water film dust remover 6, the discharging port of the material distributor 5 is communicated with the shell 12, and the discharging port of the material distributor 5 is arranged above the end part of the upper-layer material conveying mesh belt 4; the water film dust remover 6 consists of a water pan 6-1, an air inlet 6-2, a spray pipe 6-3, an air outlet 6-4, a water inlet 6-5, a stainless steel shell 6-6, pall ring packing 6-7, a water outlet pipe 6-8 and a bracket 6-9; the front side wall and the rear side wall of the stainless steel shell 6-6 are respectively provided with an air inlet 6-2, a screen plate is embedded in the air inlet 6-2, an air outlet 6-4 is arranged in the stainless steel shell 6-6 above the air inlet 6-2, the air outlet 6-4 is communicated with a cavity in the shell of the dehumidification heat pump module, the top of the stainless steel shell 6-6 is communicated with a water inlet 6-5, the water inlet 6-5 is communicated with a spray pipe 6-3 arranged at the inner top of the stainless steel shell 6-6, a nozzle is communicated with the spray pipe 6-3, pall ring packing 6-7 is filled in the stainless steel shell 6-6, the bottom of the stainless steel shell 6-6 is communicated with a water receiving disc 6-1, and the water receiving disc 6-1 is arranged in an inclined shape, the bottom of the inclined shape is connected with a water outlet pipe 6-8 in a run-through manner, a support 6-9 is fixed on a stainless steel shell 6-6 positioned on one side of the water outlet pipe 6-8, the support 6-9 is erected and fixed on a transverse plate in a shell 12, the water outlet pipe 6-8 is connected with a water inlet of a water tank 10 in a run-through manner by a pipeline, a water outlet of the water tank 10 is connected with a water inlet 6-5 in a run-through manner by a pipeline, the water tank 10 is arranged on the outer side of the dehumidification heat pump module, and the dehumidification heat pump module further comprises a centrifugal fan 1, an evaporator 7, a heat regenerator 8 and a condenser 9; a heat regenerator 8 is connected to an air outlet of the evaporator 7 in a through manner, and a liquid receiving disc at the bottom of the evaporator 7 is connected with an external pipe network in a through manner by a pipeline; the air outlet of the heat regenerator 8 is connected with a condenser 9 in a through way, and the centrifugal fan 1 is arranged at the air outlet of the condenser 9.

The work flow of the embodiment is as follows:

firstly, after impurities are removed through spiral stirring, sludge with the water content of 80% is conveyed into a material distributor 5 through a shaftless spiral, the sludge is cut into strips uniformly and is 80mm thick, the strips are sequentially conveyed into an upper layer material conveying mesh belt 4, the strips are conveyed onto a middle layer material conveying mesh belt 3 and a lower layer material conveying mesh belt 2 through a Z shape, and gradient drying is carried out layer by layer;

secondly, the centrifugal fan 1 in the dehumidification heat pump module heats dry air with the temperature of 65-67 ℃ and the relative humidity of 10-15% in the condenser 9, the dry air is sent to the lower part of a lower material conveying mesh belt 2 in a belt dryer, uniformly flows through a wet sludge layer with the thickness of 80mm and a water film on the surface of sludge particles through mesh belt ventilation holes, the steam partial pressure is generated due to the relative humidity gradient of the interface with the surrounding air, the hot air takes out the diffused steam on the surface of the wet sludge, the steam continues to flow through the mesh belt at the upper layer, the wet steam of the sludge is taken out continuously, finally more steam is taken out from the mesh belt at the uppermost layer, namely the material conveying mesh belt 4 at the upper layer, the steam flows through the three mesh belts, the temperature of the steam is reduced to 35-45 ℃, the cumulative 90-98 percent of the relative humidity is close to saturation, the dry air flows through three layers continuously, and a large amount of odor such as water vapor, dust, hydrogen sulfide ammonia gas and the like is carried out;

thirdly, the wrapped and carried nearly saturated steam with a large amount of water vapor, dust, hydrogen sulfide, ammonia gas and other odor is sucked into an air inlet 6-2 of a water film dust remover 6, a plurality of spray pipes 6-3 are arranged at the top of the water film dust remover 6, nozzles on the spray pipes 6-3 spray uniform water columns to the inner surface and the outer surface of the accumulated pall ring fillers 6-7 to form uniform water films, the water films accumulate huge specific surface area, the dust and a large amount of ammonia gas/hydrogen sulfide and other odor gases are rapidly absorbed, and the washed saturated water vapor is discharged into an inner cavity of a shell of the dehumidification heat pump module through a wire mesh demister in an air outlet 6-4;

and fourthly, air of saturated vapor enters the surface of the evaporator 7, the saturated vapor is condensed into condensed water when meeting condensation, the condensed water is collected through a material receiving disc below the evaporator 7 and discharged into a pipe network, the condensed dry air enters a heat regenerator 8 to absorb heat, the surface of the condensed water entering a condenser 9 is heated to 65 ℃ for the second time, the condensed dry air is sent into a bottommost air distribution chamber (namely between a lower-layer material conveying mesh belt 2 and a discharging device 11) in the belt dryer under the negative pressure suction action of a centrifugal fan 1, air is uniformly distributed upwards, flows through the lower-layer material conveying mesh belt 2 and a sludge material layer, continues to flow through an upper-layer mesh belt to bring the surface vapor of sludge particles out, the relative humidity of the vapor brought out by the flowing air at the uppermost layer is close to saturation, and enters a dehumidification heat pump module through a water film dust collector 6, and is circulated repeatedly.

After adopting above-mentioned structure, this embodiment's beneficial effect is: this embodiment provides a mud low temperature belt mummification system, and abundant analysis mud nature, when the circulated air circulates through water film dust remover each time, the big and small granule dust, foul gas that the humid air was wrapped up in and is carried, and high salt gas is all washed once, and these granule collide with the water film for thousands of times, ensure that the high humid air that the export was through washing is in clean state, ensure evaporimeter copper pipe, heat exchanger fin, no longer receive electrochemical corrosion. Not only ensures that the material is not changed and the service life of the heat pump is not influenced to be prolonged, but also realizes the sealing without odor in the true sense of the low-temperature sludge drier.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a mud low temperature belt mummification system which characterized in that: the system comprises a belt dryer, a dehumidification heat pump module, a material distributor (5), a water film dust remover (6) and a water tank (10); wherein the belt dryer is composed of a lower layer material conveying mesh belt (2), a middle layer material conveying mesh belt (3), an upper layer material conveying mesh belt (4), a discharging device (11) and a shell (12); a lower-layer material conveying mesh belt (2), a middle-layer material conveying mesh belt (3) and an upper-layer material conveying mesh belt (4) are sequentially arranged in the shell (12) from bottom to top, the lower-layer material conveying mesh belt (2), the middle-layer material conveying mesh belt (3) and the upper-layer material conveying mesh belt (4) are distributed in a Z shape, a discharging device (11) is arranged in the shell (12) below the lower-layer material conveying mesh belt (2), a water film dust collector (6) is fixed in the shell (12) above the upper-layer material conveying mesh belt (4), a material distributing machine (5) is arranged outside the shell (12) on the right side of the water film dust collector (6), a discharging port of the material distributing machine (5) is communicated with the shell (12), and a discharging port of the material distributing machine (5) is arranged above the end part of the upper-layer material conveying mesh belt (4); the water film dust remover (6) consists of a water pan (6-1), an air inlet (6-2), a spray pipe (6-3), an air outlet (6-4), a water inlet (6-5), a stainless steel shell (6-6), pall ring packing (6-7), a water outlet pipe (6-8) and a bracket (6-9); an air inlet (6-2) is formed in each of the front side wall and the rear side wall of the stainless steel shell (6-6), a screen plate is embedded in the air inlet (6-2), an air outlet (6-4) is formed in the stainless steel shell (6-6) above the air inlet (6-2), the air outlet (6-4) is communicated with a cavity in the dehumidification heat pump module, a water inlet (6-5) is communicated with the top of the stainless steel shell (6-6), a water inlet (6-5) is communicated with a spray pipe (6-3) arranged at the inner top of the stainless steel shell (6-6), a spray nozzle is communicated with the spray pipe (6-3), pall ring packing (6-7) is filled in the stainless steel shell (6-6), a water receiving disc (6-1) is communicated with the bottom of the stainless steel shell (6-6), the dehumidifying heat pump module is characterized in that the water receiving disc (6-1) is arranged in an inclined shape, the bottom end of the inclined shape is in through connection with a water outlet pipe (6-8), a support (6-9) is fixed on a stainless steel shell (6-6) positioned on one side of the water outlet pipe (6-8), the support (6-9) is erected and fixed on a transverse plate in the shell (12), the water outlet pipe (6-8) is in through connection with a water inlet of a water tank (10) through a pipeline, a water outlet of the water tank (10) is in through connection with a water inlet (6-5) through a pipeline, the water tank (10) is arranged on the outer side of the dehumidifying heat pump module, and the dehumidifying heat pump module further comprises a centrifugal fan (1), an evaporator (7), a heat regenerator (8) and a condenser (9); a heat regenerator (8) is connected to an air outlet of the evaporator (7) in a through manner, and a liquid receiving disc at the bottom of the evaporator (7) is connected with an external pipe network in a through manner by a pipeline; the air outlet of the heat regenerator (8) is connected with a condenser (9) in a through mode, and the centrifugal fan (1) is arranged at the air outlet of the condenser (9).