CN211601488U

CN211601488U - Material drying system

Info

Publication number: CN211601488U
Application number: CN201922352893.7U
Authority: CN
Inventors: 李明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-29
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a material drying system, the material drying system includes the dry dehumidification regeneration unit, the dry dehumidification regeneration unit includes the drying system that utilizes the dry air to carry out the drying to moisture-containing material, carries out the dehumidification system that dehumidifies to the humid air through the working solution and carries out the MVR regeneration system that evaporative concentration to the working solution; the drying system is connected with the dehumidifying system through a pipeline, and the dehumidifying system is connected with the MVR regenerating system through a pipeline. The utility model discloses utilize dry air to carry out the drying to moisture-containing material, dehumidify and MVR system carries out concentrated regeneration to the working solution to humid air through the working solution, retrieve dry material sensible heat through heat recovery system to reduce the dry material energy consumption, alleviate environmental pollution.

Description

Material drying system

Technical Field

The utility model relates to a material drying system, especially a material drying system through solution dehumidification drying MVR regeneration belongs to energy-concerving and environment-protective technical field.

Background

The material drying relates to a plurality of industries, the drying operation often becomes the main energy consumption link of the production process, and the pollution of the drying unit to the environment is often serious, so the energy conservation, consumption reduction and clean production also become the important targets of the drying industry technology. The existing drying process mainly adopts fossil energy to burn and provide external heat sources such as hot air, steam, flue gas and the like to heat and dry materials or adopts an inverse Carnot cycle heat pump to condense or an extension transformation technology to dehumidify and dry materials, so that the energy consumption and the operation cost are high, the remote monitoring and management are inconvenient, and simultaneously, the emission of waste gas or greenhouse gas which brings environmental problems is accompanied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a material drying system that energy consumption and running cost are low, the remote monitoring management of being convenient for, no environmental pollution and greenhouse gas discharge to prior art exist.

The utility model discloses a material drying system, including dry dehumidification regeneration unit, dry dehumidification regeneration unit includes the drying system that utilizes dry air to carry out the drying to moisture-containing material, carries out the dehumidification system that dehumidifies to humid air through the working solution and carries out the MVR regeneration system that evaporative concentration to the working solution; the drying system is connected with the dehumidifying system through a pipeline, and the dehumidifying system is connected with the MVR regenerating system through a pipeline.

The drying system comprises a feed hopper, a feeding machine, a material distributor, a dryer, a discharge hopper, a circulating fan and an air inlet pipe; the feed hopper is connected with the material distributor through a feeding machine; the material distributor is connected with the dryer; the circulating fan is connected with the dryer through an air inlet pipe; the discharge hopper is connected with the dryer.

The dehumidification system comprises a return air pipe, a dehumidifier, a demister and a dehumidification circulating pump; a dryer of the drying system is connected with the dehumidifier through an air return pipe; the demister is connected with the dehumidifier; and the inlet and the outlet of the dehumidification circulating pump are connected with the dehumidifier through a pipeline.

The MVR regeneration system comprises a working liquid discharge pump, a heat exchanger, an MVR compressor, a separator, an evaporation demister, an evaporation circulating pump and a regenerated liquid return pipe; the inlet and the outlet of the working liquid discharge pump are respectively connected with a dehumidifier of a dehumidification system and an inlet of a heat exchanger through pipelines; the outlet of the heat exchanger is connected with the separator through a pipeline; the evaporation demister is connected with the separator; the inlet and the outlet of the MVR compressor are respectively connected with the gas outlet of the separator and the gas inlet of the heat exchanger through pipelines; the inlet and the outlet of the evaporation circulating pump are respectively connected with the discharge port of the separator and the inlet of the heat exchanger through pipelines; and the regeneration liquid return pipe is connected with an outlet of the evaporation circulating pump and an inlet of a dehumidification circulating pump of the dehumidification system.

The utility model also comprises a heat recovery unit, wherein the heat recovery unit comprises a heat exchange circulating pump and a heat exchange pipe; and the material distributor of the drying system is connected with the discharge hopper of the drying system through a heat exchange pipe and a heat exchange circulating pump.

The utility model discloses still include the electrical control unit, the automatic control cabinet of electrical control unit for having PLC programme-controlled and remote communication module.

The beneficial effects of the utility model reside in that: (1) the utility model provides a drying dehumidification regeneration process system can reduce the regeneration energy consumption of the working solution in the prior art, recover the sensible heat of dry heat materials and further reduce the running cost of the prior drying process; (2) the automatic control cabinet with the remote communication module provided by the utility model can solve the problem that the existing drying system is inconvenient to monitor and manage remotely; (3) the utility model provides a dry dehumidification and MVR regeneration technology can solve the environmental problem that prior art waste gas or greenhouse gas discharged and bring.

Drawings

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

In the figure: 1. the material loading machine, 2, the material distributor, 3, the desiccator, 4, the return air duct, 5, the defroster, 6, the switch board, 7, the MVR compressor, 8, the condensation heat exchanger, 9, the evaporation defroster, 10, the feeder hopper, 11, the heat transfer circulating pump, 12, the heat exchange tube, 13, the air-supply line, 14, go out the hopper, 15, circulating fan, 16, the dehumidifier, 17, the dehumidification circulating pump, 18, the working solution discharge pump, 19, regeneration liquid feed back pipe, 20, the evaporation circulating pump, 21, the separator.

Detailed Description

In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

As shown in FIG. 1, the utility model discloses a material drying system, including dry dehumidification regeneration unit, heat recovery unit and electrical control unit.

The drying, dehumidifying and regenerating unit comprises a drying system for drying moisture-containing materials by using dry air, a dehumidifying system for dehumidifying the wet air by using working liquid and an MVR regenerating system for evaporating and concentrating the working liquid; the drying system is connected with the dehumidifying system through a pipeline, and the dehumidifying system is connected with the MVR regenerating system through a pipeline.

The drying system comprises a feed hopper 10, a feeding machine 1, a material distributor 2, a drying machine 3, a discharge hopper 14, a circulating fan 15 and an air inlet pipe 13; the feed hopper 10 is connected with the material distributor 2 through the feeding machine 1; the material distributor 2 is connected with the dryer 3; the circulating fan 15 is connected with the dryer 3 through an air inlet pipe 13; the discharge hopper 14 is connected to the dryer 3.

The dehumidification system comprises a return air pipe 4, a dehumidifier 16, a demister 5 and a dehumidification circulating pump 17; a dryer 3 of the drying system is connected with a dehumidifier 16 through a return air duct 4; the demister 5 is connected with a dehumidifier 16; the inlet and outlet of the dehumidification circulating pump 17 are connected with the dehumidifier 16 through a pipeline.

The MVR regeneration system comprises a working solution discharge pump 18, a heat exchanger 8, an MVR compressor 7, a separator 21, an evaporation demister 9, an evaporation circulating pump 20 and a regeneration solution return pipe 19; an inlet and an outlet of the working liquid discharge pump 18 are respectively connected with a dehumidifier 16 of the dehumidification system and an inlet of the heat exchanger 8 through pipelines; the outlet of the heat exchanger 8 is connected with a separator 21 through a pipeline; the evaporation demister 9 is connected with the separator 21; an inlet and an outlet of the MVR compressor 7 are respectively connected with an air outlet of the separator 21 and an air inlet of the heat exchanger 8 through pipelines; the inlet and outlet of the evaporation circulating pump 20 are respectively connected with the discharge port of the separator 21 and the inlet of the heat exchanger 8 through pipelines; the regeneration liquid return pipe 19 is connected with the outlet of the evaporation circulating pump 20 and the inlet of the dehumidification circulating pump 17 of the dehumidification system.

The heat recovery unit comprises a heat exchange circulating pump 11 and a heat exchange pipe 12; the material distributor 2 of the drying system is connected with a discharge hopper 14 of the drying system through a heat exchange pipe 12 and a heat exchange circulating pump 11.

The electric control unit is an automatic control cabinet 6 with a PLC program control and remote communication module; the feeding machine 1, the material distributor 2, the drying machine 3, the heat exchange circulating pump 11, the circulating fan 15, the dehumidification circulating pump 17, the working solution discharging pump 18, the MVR compressor 7 and the evaporation circulating pump 20 are respectively electrically connected with the automatic control cabinet 6.

The utility model discloses an implement the step including utilizing the dry air to carry out dry drying step, carry out the dehumidification step that dehumidifies and carry out evaporative concentration's MVR regeneration step to the working solution to humid air to containing wet material through the working solution.

The drying step specifically comprises:

step (a 1): moisture-containing materials in the feed hopper 10 are uniformly distributed on the dryer 3 through the feeding machine 1 and the material distributor 2;

step (a 2): dry hot air enters the drier 3 through the circulating fan 15 through the air inlet pipe 13 to exchange heat with wet materials for evaporation;

step (a 3): the dry material is discharged from the dryer 3 through the discharge hopper 14.

The dehumidifying step specifically comprises:

step (B1): the wet air after the moisture is absorbed by the drying material enters the dehumidifier 16 through the air return pipe 4;

step (B2): the dehumidifying circulating pump 17 promotes the sprayed working solution to perform heat and mass exchange with the humid air;

step (B3): the dehumidified air is collected by the demister 5, and then is conveyed into the air inlet pipe 13 through the circulating fan 15.

The MVR regeneration step specifically comprises:

step (C1): working fluid in a dehumidifier 16 of the dehumidification system is mixed with regenerated fluid at an outlet of an evaporation circulating pump 20 through a working fluid discharge pump 18 and enters a heat exchanger 8 for heat exchange;

step (C2): the mixed liquid heated by the heat exchanger 8 enters a separator 21 for evaporation and concentration;

step (C3): the secondary steam generated by evaporation enters an MVR compressor 7 for compression and temperature rise after being subjected to vapor-liquid separation by an evaporation demister 9;

step (C4): the compressed and heated steam enters a heat exchanger 8 to exchange heat with working fluid and is condensed into liquid water to be discharged;

step (C5): the regenerated liquid in the separator 21 is conveyed to the heat exchanger 8 for circular heating through the evaporation circulating pump 20, and part of the regenerated liquid enters the liquid inlet of the dehumidification circulating pump 17 of the dehumidification system through the regenerated liquid return pipe 19 to supplement the dehumidification working liquid.

The heat recovery implementation step of the material drying system of the utility model; the dry heat materials in the discharge hopper 14 are circularly conveyed through the circulating water in the heat exchange pipe 12 by the heat exchange circulating pump 11 to exchange heat with the wet materials in the material distributor 2 so as to recover the sensible heat of the dry heat materials.

The utility model discloses a material drying system's automatic control and remote communication implement the step: the feeding machine 1, the material distributor 2, the drying machine 3, the heat exchange circulating pump 11, the circulating fan 15, the dehumidification circulating pump 17, the working solution discharging pump 18, the MVR compressor 7 and the evaporation circulating pump 20 are respectively and electrically connected with the automatic control cabinet 6; the automatic control cabinet 6 supplies power to the feeding machine 1, the material distributor 2, the drying machine 3, the heat exchange circulating pump 11, the circulating fan 15, the dehumidification circulating pump 17, the working solution discharging pump 18, the MVR compressor 7 and the evaporation circulating pump 20, coordinates each device to work smoothly according to a set program, and simultaneously transmits signals such as system running states and faults outwards through a built-in functional module so as to facilitate remote monitoring and management.

The above description is only a preferred practical implementation of the present invention, and is not intended to limit the scope of the present invention, so that the method steps and equivalent variations using the contents of the present specification and drawings are all within the scope of the present invention.

Claims

1. A material drying system which is characterized in that: the device comprises a drying and dehumidifying regeneration unit, wherein the drying and dehumidifying regeneration unit comprises a drying system for drying moisture-containing materials by using dry air, a dehumidifying system for dehumidifying the wet air by using working liquid and an MVR regeneration system for evaporating and concentrating the working liquid; the drying system is connected with the dehumidifying system through a pipeline, and the dehumidifying system is connected with the MVR regenerating system through a pipeline.

2. The material drying system of claim 1, wherein: the drying system comprises a feed hopper (10), a feeding machine (1), a material distributor (2), a drying machine (3), a discharge hopper (14), a circulating fan (15) and an air inlet pipe (13); the feed hopper (10) is connected with the material distributor (2) through the feeding machine (1); the material distributor (2) is connected with the dryer (3); the circulating fan (15) is connected with the dryer (3) through an air inlet pipe (13); the discharge hopper (14) is connected with the dryer (3).

3. The material drying system of claim 1, wherein: the dehumidification system comprises a return air pipe (4), a dehumidifier (16), a demister (5) and a dehumidification circulating pump (17); a dryer (3) of the drying system is connected with a dehumidifier (16) through an air return pipe (4); the demister (5) is connected with the dehumidifier (16); the inlet and outlet of the dehumidification circulating pump (17) are connected with the dehumidifier (16) through a pipeline.

4. The material drying system of claim 1, wherein: the MVR regeneration system comprises a working liquid discharge pump (18), a heat exchanger (8), an MVR compressor (7), a separator (21), an evaporation demister (9), an evaporation circulating pump (20) and a regeneration liquid return pipe (19); an inlet and an outlet of the working liquid discharge pump (18) are respectively connected with a dehumidifier (16) of a dehumidification system and an inlet of a heat exchanger (8) through pipelines; the outlet of the heat exchanger (8) is connected with the separator (21) through a pipeline; the evaporation demister (9) is connected with the separator (21); an inlet and an outlet of the MVR compressor (7) are respectively connected with an air outlet of the separator (21) and an air inlet of the heat exchanger (8) through pipelines; an inlet and an outlet of the evaporation circulating pump (20) are respectively connected with a discharge hole of the separator (21) and an inlet of the heat exchanger (8) through pipelines; and the regeneration liquid return pipe (19) is connected with an outlet of the evaporation circulating pump (20) and an inlet of a dehumidification circulating pump (17) of the dehumidification system.

5. The material drying system of claim 1, wherein: the heat recovery device also comprises a heat recovery unit, wherein the heat recovery unit comprises a heat exchange circulating pump (11) and a heat exchange pipe (12); the material distributor (2) of the drying system is connected with a discharge hopper (14) of the drying system through a heat exchange pipe (12) and a heat exchange circulating pump (11).

6. The material drying system of claim 1, wherein: the automatic control system also comprises an electric control unit, wherein the electric control unit is an automatic control cabinet (6) with a PLC program control and remote communication module.