CN206467121U - A kind of closed system of pump coupled heat absorbed type drying sludge - Google Patents
A kind of closed system of pump coupled heat absorbed type drying sludge Download PDFInfo
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- CN206467121U CN206467121U CN201621229485.2U CN201621229485U CN206467121U CN 206467121 U CN206467121 U CN 206467121U CN 201621229485 U CN201621229485 U CN 201621229485U CN 206467121 U CN206467121 U CN 206467121U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The utility model discloses a kind of closed system of pump coupled heat absorbed type drying sludge, its structure includes heat pump refrigeration working medium circulation loop, adsorption system regeneration air circulation loop and these three closed-loop paths of air for drying sludge circulation loop.The effect of heat pump refrigeration working medium circulation is that air for drying sludge is dehumidified and heated so that air constantly carries out sludge drying, the circulation of three processes of dehumidifying and heating.Heat pump is heated using the condensation heat reclaimed to air for drying sludge.The present apparatus is full-closed structure, and adsorption system regeneration air circulation loop and air for drying sludge circulation loop neither discharge any gas.
Description
Specification
Technical field
Pump coupled heat absorption type dehumidification treatments air is utilized to be used for the closed system for drying sludge, tool the present invention relates to a kind of
Body can be described as using refrigeration working medium circulation loop, hygroscopic agent regenerating medium circulation loop and dried medium circulation loop these three
A kind of closed sludge dry system that medium circulating circuit is combined, belongs to heat-pump dehumidification technology, adsorption and dehumidification technology and sludge
Technical field of drying.
Background technology
Sanitary sewage produces substantial amounts of sludge with industrial effluent treatment plant.In order to reduce freight charges, landfill expense, fuel cost, place
Manage disposal facility investment etc., it is necessary to which decrement is carried out with minimum cost.Most economical decrement measure is typically mechanical dehydration.By
In the complicated reason such as sludge quality, conventional mechanical dewatering equipment can only take off sludge to moisture content 80~85% or so.If
Drying and other treatment is not carried out, the volume for greatly increasing follow-up sludge treatment facilities is improved into processing cost.
Sludge after being dehydrated using heated-air drying is a kind of universal method.Hot-air drying device can be divided into open type system
With closed type system.Open type system refers to that dried medium leaves hothouse and extraneous ring is exhausted directly to after dedusting deodorizing process
Border, closed type system refers to dried medium and all recycled in hothouse.
Closed type drying system provides two major advantages.First, closed desiccation pattern can easily keep permanent
Fixed dry environment, thus the temperature and relative humidity of dried medium can accurately control.Second, closed desiccation pattern
Not outwardly environmental emission dried medium, no foul smell is excessive, without installing complicated odor removal.
Recycling dried medium in a closed system needs to meet two conditions.First, being done to leaving hothouse
Dry medium cooling and dehumidifying, reduces relative humidity.Second, being heated to the low temperature drying medium after cooling and dehumidifying, reach and enter drying
Temperature needed for room.Two requirements of the above can be easily met using heat-pump dehumidification technology.
Heat-pump dehumidification technology is to realize dehumidifying using the steam compression cycle of a refrigerant.Conventional heat-pump dehumidification dress
This four big part by compressor, condenser, evaporator and expansion valve is put to constitute.The high temperature and high pressure gas refrigeration come out by compressor
Agent enters condenser, after imparting heat to the air dehumidified by its heating, is condensed into normal temperature high voltage liquid, expanded valve throttling
Enter evaporator afterwards, absorb the heat of the humid air come out by hothouse, humid air is cooled to below dew-point temperature, separate out solidifying
Bear water, so as to reach the purpose of dehumidifying, become low temperature low pressure gas, then compression is sucked by compressor, and so on circulate.Heat pump
Dehydrating unit can reclaim the latent heat of humid air, therefore energy-saving effect is notable, it has also become a kind of very competitive removal moisture drying
Technology.
The maximum disadvantage that conventional heat-pump dehumidification device is present is that depth dehumidifying, heat-pump dehumidification can not be provided for dried medium
Hot blast afterwards still contains higher relative humidity, reduces the efficiency of drying process.The deficiency of heat-pump dehumidification can pass through profit
Solved with an auxiliary dehumanization method.Absorption type dehumidifying is another effective dehumanization method.The hygroscopic agent used has silicon
Glue, aluminium glue and molecular sieve.Heat pump can provide depth dehumidifying with absorption type dehumidifying coupled system for dried medium.Inhale water saturated
Hygroscopic agent must carry out desorption processing, i.e., so-called " regeneration ", material could obtain adsorption activity again.Thermal regeneration is a kind of normal
Renovation process.Because thermal regeneration methods energy consumption is huge, absorption type dehumidifying locks into high operating cost, is unsuitable for
Large-scale dehumidifying project, thus it is few in the application of drying sludge field.
Chinese patent literature CN101526301A discloses a kind of heat pump and couples drying system with absorption type, is suitable for eating
Product, fruits and vegetables, medicine, fabric and cereal seed etc. are dried.The regeneration of hygroscopic agent can be using factory's used heat, waste heat or solar energy
Regenerate thermal source.Most sewage treatment plants are set up in remote place, it is impossible to obtain enough industrial waste heats or waste heat.
Extra investment is needed if the use of solar energy being regeneration thermal source.In addition, (solar energy is not enough and without too for the unstability of solar energy
When positive energy) absorption type dehumidifying effect can be caused to fluctuate.
Chinese patent literature CN102716644A and CN203803339U disclose a kind of heat pump and rotary adsorptive dehumidification coupling
Operation drying machine is closed, is suitable for food, timber and paper etc. and dries.Condensation of the energy that adsorption runner regeneration needs from refrigerant
Heat is obtained.Remaining condensation heat is used to heat the dried medium after evaporator and adsorption runner.This condensation heat side of sharing
Formula can cause the temperature into the dried medium of hothouse relatively low, reduce the efficiency of drying process.
Moreover, heat pump described above is regenerating medium using extraneous fresh air with absorption type dehumidifying coupled system, right
Discharge system after the hygroscopic agent of saturation is desorbed.Such a non-enclosed desiccation pattern is unsuitable for drying sludge.If sludge
Drying process is fluctuated, and system is not avoided that different types of organic matter volatilization in sludge, produces foul gas.Foul gas
It can be adsorbed by hygroscopic agent, then be reproduced medium desorption, as regenerating medium is discharged in external environment, cause two secondary environments dirty
Dye.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the present invention proposes a kind of totally-enclosed for being suitable for drying sludge
Formula heat pump and absorption type dehumidifying coupled system.The system combination heat-pump dehumidification ability and absorption type dehumidifying effect enter to dry air
Row depth dehumidify, improve drying process efficiency, while by the use of refrigeration working medium circulation loop produce waste heat as hygroscopic agent again
Heat source, reduces the energy resource consumption of system.
The device that the present invention is realized be by heat pump refrigerant circulation loop, adsorption system regeneration air circulation loop and
These three closed-loop paths of air for drying sludge circulation loop are constituted.
Heat pump refrigerant circulation loop includes compressor, three-way control valve, condenser A, condenser B, liquid reservoir, swollen
Swollen valve, evaporator；The refrigerant line of compressor outlet is connected by three-way control valve with condenser A and condenser B；Condenser
The pipeline of A outlets and the pipeline of condenser B outlets are in parallel, are then connected with liquid reservoir；Liquid reservoir outlet pipeline successively with it is swollen
Swollen valve, evaporator are connected；A loop is formed after pipeline and the compressor series connection of evaporator outlet, it is characterised in that refrigerant
The waste heat heat that heat pump is produced is transmitted in condenser A the low-temp recovery air dehumidified, in condenser B to having dehumidified
Low temperature dry air is heated.
Adsorption system regeneration air circulation loop includes blower fan A, adsorbent equipment, air cleaner A, heat exchanger, heat pump
The condenser A of system；The regeneration air pipeline of blower fan A outlets is connected with adsorbent equipment；Adsorbent equipment outlet pipeline successively and
Air cleaner A, heat exchanger, the condenser A of heat pump are connected；The pipeline and blower fan A of the condenser A outlets of heat pump
A loop is formed after series connection, it is characterised in that adsorbent equipment carries out depth dehumidifying to dry air, heat exchanger is by high humility
Regeneration air is cooled to below dew-point temperature, separates out condensate, so as to reach the purpose of dehumidifying, heat exchanger can be air cooling
Device or water-cooled heat exchanger or other types of heat exchanger, the condenser A of heat pump to the low temperature that has dehumidified again
Raw air heating allows it to heat up.
Dry air circulation loop include blower fan B, hothouse, the evaporator of heat pump, the adsorbent equipment of adsorption system,
Air cleaner B, heat pump condenser B；The dry air pipeline of blower fan B outlets successively with hothouse, heat pump
Evaporator, the adsorbent equipment of adsorption system, air cleaner B, the condenser B connections of heat pump；The condenser B of heat pump
A loop is formed after pipeline and blower fan the B series connection of outlet, it is characterised in that the evaporator through heat pump removes most of water
The adsorbent equipment that dry air after point enters adsorption system carries out second of dehumidifying.The type of hothouse can be box/bucket
Formula or belt/continous way.
Interaction between refrigerant circulation loop and regeneration air circulation loop is the condenser A by heat pump
To complete.Gas refrigerant enters condenser A, and the waste heat heat that refrigerant circulation loop is produced is transmitted to the low temperature dehumidified again
Raw air.Regeneration air extraction after blower fan A will heat up blows to adsorbent equipment.
Interaction between refrigerant circulation loop and dry air circulation loop is the evaporator by heat pump
Completed with condenser B.Liquid refrigerant enters evaporator, absorbs the heat of the high humility dry air come out by hothouse,
High humility dry air is cooled to below dew-point temperature, condensate is separated out, so as to reach the purpose of dehumidifying.Gas refrigerant enters
Enter condenser B, the heat reclaimed in evaporator is transmitted to the low temperature dry air dehumidified.Dry air reaches dry sludge institute
Drawn after the temperature needed by blower fan B and blow to hothouse.
Interaction between regeneration air circulation loop and dry air circulation loop is the absorption by adsorption system
Device is completed.The dry air dehumidified by evaporator enters the moisture absorption area of adsorbent equipment, carries out second and dehumidifies.Regeneration is empty
Gas enters the renewing zone of adsorbent equipment, carries out desorption processing to inhaling water saturated hygroscopic agent, allows it to obtain adsorption activity again.Inhale
The flow setting of adsorption device has various ways, can be fixed bed, runner or moving bed.
The hygroscopic agent of preventing fixed bed adsorber is that fixation is filled in adsorption tower.High humility dry air flows through an absorption
Tower, until hygroscopic agent is by water saturation.After reaching saturation point, high humility dry air is switched to another seat and contains fresh moisture absorption
The adsorption tower of agent.And the adsorption tower of saturation then starts regeneration.It can be realized continuously, no using the adsorption tower of two or more than two
The operation of interruption.One or more towers is in absorption, while there is the regeneration of one or two tower.The quantity of adsorption tower can be from two
To several.No matter its quantity is how many, what every adsorption tower was just as.Dry air and regeneration air are in adsorption tower
In flow direction can upwards can also be downward.
Runner adsorbent equipment is a honey comb like disk being made up of side by side some pipelines, and many are embedded with pipeline
Granular hygroscopic agent and breathable wheel, are divided into moisture absorption area and renewing zone by runner.Runner is slowly rotated during work, and high humility is done
Dry air is blowed to positioned at the runner position in moisture absorption area, and moisture is deposited on runner by hygroscopic agent absorption during air penetration runner.When
When the position for having adsorbed moisture goes to renewing zone, the regeneration air of heat is blowed to the position of renewing zone by blower fan A, and hot-air will be by
The moisture baking effusion in hygroscopic agent is adsorbed, hygroscopic agent has recovered after adsorption capacity, moisture absorption area is turned to again and carries out moisture absorption, such as
This iterative cycles, high humility dry air is dehumidified.
Moving bed adsorbent equipment is using mechanical system (conveyer belt or spiral) hygroscopic agent in fixed moisture absorption area and regeneration
Iterative cycles are moved between area, realize continuous, continual operation.This flow setting is applied to wear-resisting hygroscopic agent.
The type of hygroscopic agent has solid and liquid.The material of solid moisture absorbent can be silica gel, aluminium glue, activated carbon, molecule
Sieve and metal organic frame etc..The regeneration of hygroscopic agent is most important process in adsorbent equipment operation.Due to needing to consume fuel,
Its running cost is also highest.The selection of hygroscopic agent depends on its regeneration temperature.The hygroscopic agent that the present invention is used, it is special
Levy and be, low-temp recovery air (being less than 60 degree Celsius) effectively can carry out desorption processing to inhaling water saturated hygroscopic agent.
The present invention has the following advantages that and beneficial effect：
1st, ripe heat-pump dehumidification technology, absorption type dehumidifying technology and Hot Air Drying are coupled and changed by the present invention
It is good that there is provided a kind of efficient, totally enclosed type drying method of energy-saving and environmental protection and scheme.The closed operation mould of the drying system
Formula has wide range of applications, and is particularly suitable for use in the life after mechanical dehydration or the drying of industrial sludge, solves a large amount of stacking sludge
Processing disposal difficulties, can fully realize to sludge carry out " minimizing, stabilisation, innoxious and recycling " processing.It is final dirty
Mud particle, which can be done, mixes fuel burning, fertilizer, construction material, bio-fuel, land use etc..
2nd, the present invention combines heat-pump dehumidification ability and absorption type dehumidifying effect and carries out depth dehumidifying to dry air, improves dry
The efficiency of dry process, greatly reduces the operating cost of drying sludge processing.
3rd, the thermal source that the waste heat that the present invention is produced by the use of heat pump refrigerant circulation loop regenerates as hygroscopic agent, is not accounted for
The condensation heat reclaimed with heat pump, also needing no outside thermal source, it is ensured that the energy saving of the regeneration link of adsorption system, are realized
The sustainable development of used heat/UTILIZATION OF VESIDUAL HEAT IN.
4th, by the way that dry air and hygroscopic agent regeneration air are dehumidified and heated, the present invention realizes following for both media
Ring is utilized, and the heat pump for solving traditional heated air drying system and patent disclosure couple drying system with absorption type and needs past external world's ring
The problem of border is vented.The present apparatus does not discharge any gas, without installing complicated, expensive exhaust gas processing device, only discharge condensation
Water is to sewage treatment plant, it is ensured that the feature of environmental protection of whole drying device.
Brief description of the drawings
Fig. 1 is the structural representation and workflow diagram that the present invention uses fixed bed for adsorbent equipment.
Fig. 2 is the structural representation and workflow diagram that the present invention uses runner for adsorbent equipment.
Fig. 3 is the structural representation and workflow diagram that the present invention uses moving bed for adsorbent equipment.
The explanation of reference：1st, compressor, 2, three-way control valve, 3, condenser A, 4, condenser B, 5, liquid reservoir, 6,
Expansion valve, 7, evaporator, 8, blower fan A, 9, adsorbent equipment, 10, air cleaner A, 11, heat exchanger, 12, blower fan B, 13, dry
Dry room, 14, air cleaner B.
Embodiment
A kind of method of the pump coupled heat absorbed type drying sludge of the present embodiment, by heat pump refrigerant circulation loop,
Adsorption system regeneration air circulation loop and air for drying sludge circulation loop composition.Below in conjunction with the accompanying drawings and embodiment
The invention will be further described.
As shown in Figure 1, 2, 3, thick line represents refrigerant circulation loop, and fine rule represents regeneration air circulation loop, dotted line table
Show dry air circulation loop.These three media are all circulated according to clockwise direction.
Refrigerant circulation loop includes compressor 1, three-way control valve 2, condenser A3, condenser B4, liquid reservoir 5, expansion
Valve 6, evaporator 7；The refrigerant line that compressor 1 is exported is connected by three-way control valve 2 with condenser A3 and condenser B4；It is cold
The pipeline of condenser A3 outlets and the pipeline of condenser B outlets are in parallel, are then connected with liquid reservoir 5；Liquid reservoir 5 export pipeline according to
It is secondary to be connected with expansion valve 6, evaporator 7；The pipeline and compressor 1 that evaporator 7 is exported form a loop after connecting.
Adsorption system regeneration air circulation loop includes blower fan the A8, (Fig. 1 of adsorbent equipment 9：Fixed bed, Fig. 2：Runner, Fig. 3：
Moving bed), air cleaner A10, heat exchanger 11, condenser A3；The regeneration air pipeline and adsorbent equipment 9 of blower fan A8 outlets
It is connected；The pipeline that adsorbent equipment 9 is exported is connected with air cleaner A10, heat exchanger 11, condenser A3 successively；Condenser A3
A loop is formed after pipeline and blower fan the A8 series connection of outlet.
Dry air circulation loop include blower fan B12, hothouse 13, evaporator 7, adsorbent equipment 9, air cleaner B14,
Condenser B4；Blower fan B12 outlet dry air pipeline successively with hothouse 13, evaporator 7, adsorbent equipment 9, air cleaner
B14, condenser B4 connections；A loop is formed after the pipeline of condenser B4 outlets and blower fan B12 series connection.
The present invention combines heat-pump dehumidification ability and absorption type dehumidifying effect and carries out depth dehumidifying to dry air, greatly improves
The efficiency of drying sludge process.Pump coupled heat absorption type dehumidifying drying method for sludge, includes heat pump refrigerant circulation, inhales
Attached system regeneration air circulation, three parts of air circulation for drying sludge, it is comprised the following steps that：
The high-temperature high-pressure gas refrigerant come out by compressor 1 produces refrigerant circulation loop by three-way control valve 2
Waste heat and evaporator 7 reclaim condensation heat be separately dispensed into condenser A3 and condenser B4.Condensed gas refrigeration
Agent becomes normal temperature high voltage liquid, and expanded valve 6 enters evaporator 7 after throttling, and absorbs the high humility come out by hothouse 13 and dries
The heat of air, is cooled to below dew-point temperature, condensate is separated out, so as to reach the purpose of dehumidifying.Absorb after heat
Liquid refrigerant is evaporated into low temperature low pressure gas, then sucks compression by compressor 1, becomes high temperature and high pressure gas and flows to threeway tune
Valve 2 is saved, is and so on circulated.
The regeneration air of adsorption system enters the waste heat that condenser A3 absorption refrigeration agent circulation loop is produced.Blower fan A8 will rise
Regeneration air after temperature draws the renewing zone for blowing to adsorbent equipment 9, carries out desorption processing to inhaling water saturated hygroscopic agent, allows it again
Secondary acquisition adsorption activity.Air cleaner A10 is arranged on the regeneration air exit of adsorbent equipment 9, prevents regeneration air from taking away
Hygroscopic agent powder.The high humility regeneration air for leaving air cleaner A10 enters heat exchanger 11.The effect of heat exchanger 11 is
The temperature of high humility regeneration air is reduced by pipeline a and b, condensate moisture is got off, condensate is separated out, so as to reach dehumidifying
Purpose.The condenser A3 of heat pump to dehumidified low-temp recovery air heating allows it to heat up, blower fan A8 will heat up after again
Raw air draws the renewing zone for blowing to adsorbent equipment 9, and so on circulates.
The present invention adsorbent equipment 9 realized using fixed bed, runner or moving bed continuously, continual operation, its tool
Body step is as follows：
Most of preventing fixed bed adsorbers have 2,3 or 4 same adsorption towers.In double tower device, tower absorption is another
Seat tower regeneration.3 tower apparatus, then be probably the absorption of two towers, tower regeneration；Or two tower regeneration, a tower absorption.Regeneration air can be with
From top to bottom, it can also flow from bottom to top.Most common double tower device is described below.Double tower device passes through a set of switch
The conveying of Vavle switching dry air and regeneration air, realizes continuous, continual operation.One tower is in adsorption and dehumidification, Ling Yita
In desorption, two towers coordinate, gone round and begun again each other.As shown in figure 1, tower 9a and tower 9b respectively have 4 switch valves, white switch valve is represented
Open-minded, black switch valve represents to close.The dry air for carrying out flash-pot 7 enters tower 9a from top, is downward through adsorbent bed,
Remove moisture removal.Dry air flows out from bottom of towe, through air cleaner B14, into condenser B4.The regeneration that condensed device A3 comes out
Air enters tower 9b from bottom, is come out from tower top.The regeneration air of heat passes through adsorbent, and raises its temperature, in adsorbent
Moisture be evaporated, and be reproduced air and take tower out of.Tower top regeneration air is after air cleaner A10 by heat exchanger 11
Moisture in cooling, regeneration air is condensed, and sewage disposal system is discharged into by pipeline c.Regeneration air is from heat exchanger
11 out return to condenser A3.At the end of absorption/regeneration period (adsorption time is identical with the recovery time), valve events are switched,
Dry air is switched to the charging of tower 9b tower tops, and regeneration air is switched to the charging of tower 9a bottom of towe.The operation of switch valve is interval, its
Effect is to be sent into or send out different towers by dry air or regeneration air.In many counting apparatus, the operation of switch valve is to pass through
Electric and pneumatic system, is triggered by a timer.
Runner adsorbent equipment by shell, space bar and temperature resistant encapsulation adhesive tape construct, by runner be divided into moisture absorption area with again
Raw area, as shown in Fig. 2 9a is moisture absorption area, 9b is renewing zone.Runner 9 makees continuous under the driving of motor with optimal rotary speed
Rotation.The dry air for carrying out flash-pot 7 enters in moisture absorption area 9a honeycomb channel, water when by honeycomb channel in air
Divide and removed by hygroscopic agent.Obtained dry air passes through air cleaner B14, into condenser B4.The moisture absorption of moisture is adsorbed
Agent rotates into renewing zone 9b before saturation is reached.Regeneration air after condensed device A3 heating, with opposite with dry air
Flow direction imported into renewing zone 9b, hygroscopic agent is regenerated.By this regeneration cycle, hygroscopic agent becomes to dry shape once again
State.The moisture got off is desorbed from hygroscopic agent it is reproduced air and take out of outside runner, by heat exchanger 11 after air cleaner A10
Moisture in cooling, regeneration air is condensed, and sewage disposal system is discharged into c by pipe.Regeneration air is from heat exchanger
11 out return to condenser A3.This cyclic process is carried out continuously.
As shown in figure 3, moving bed adsorbent equipment utilizes mechanical system (conveyer belt or spiral) hygroscopic agent in moisture absorption area 9a
Iterative cycles are moved between the 9b of renewing zone, realize continuous, continual operation.The dry air for carrying out flash-pot 7 enters suction
Wet area 9a.The hygroscopic agent come out by renewing zone 9b imported into moisture absorption area 9a with the flow direction opposite with dry air, empty to drying
Gas removes moisture removal.Obtained dry air passes through air cleaner B14, into condenser B4.Water saturated hygroscopic agent is inhaled from suction
Wet area 9a comes out return renewing zone 9b.Regeneration air is drawn condenser A3 by blower fan A8, is blowed to the flow direction opposite with hygroscopic agent
Renewing zone 9b, carries out desorption processing to inhaling water saturated hygroscopic agent, allows it to obtain adsorption activity again.Hygroscopic agent after desorption enters
Enter moisture absorption area 9a, dry air is dehumidified, and so on circulated.
Three kinds of adsorbent equipments air for drying sludge cyclic process described above is consistent.Carry out condenser B4
High temperature dry air hothouse 13 is sent to by blower fan B12, the moisture in wet mud is removed by the method for heated-air drying.High humidity
Spend air and out enter evaporator 7 from hothouse 13, be cooled to by refrigerant below dew-point temperature and remove moisture removal, condensed water passes through
Pipeline d is discharged into sewage disposal system.Dry air after removing most of moisture through evaporator 7 enters adsorbent equipment 9 and carries out the
Secondary dehumidifying, so as to reach the purpose of depth dehumidifying.Obtained dry air enters condenser B4 through air cleaner B14,
Continue to be utilized by condenser B4 heat cycles, complete air for drying sludge circulation.
The preferred embodiment of the present invention described in detail above, still, the invention is not limited in above-mentioned embodiment
In detail, be familiar with the those skilled in the art of this area various when that can make on the premise of without prejudice to spirit of the invention and principle
Change and should be equivalent substitute mode with retouching, these changes with modification, be included within protection scope of the present invention.
Claims (7)
1. a kind of closed system of pump coupled heat absorbed type drying sludge, it is characterised in that circulated by heat pump refrigeration working medium
Loop, adsorption system regeneration air circulation loop and air for drying sludge circulation loop composition, the heat pump system
Cold working medium circulation loop be by compressor, three-way control valve, condenser A, condenser B, liquid reservoir, expansion valve, evaporator successively
Pipeline connects to form a loop, and the adsorption system regeneration air circulation loop is by blower fan A, adsorbent equipment, air filtration
Device A, heat exchanger, heat pump condenser A successively placed in series formation one loop, the air for drying sludge
Circulation loop is by blower fan B, hothouse, the evaporator of heat pump, the adsorbent equipment of adsorption system, air cleaner B, heat pump
Pipeline is connected to form a loop to the condenser B of system successively.
2. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the absorption
System regeneration air circulation loop and air for drying sludge circulation loop neither discharge any gas, and no foul smell is excessive,
Condensed water is only discharged to sewage treatment plant.
3. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the heat pump
The refrigeration working medium of system passes through the regeneration air of condenser A and condenser B respectively to adsorption system and the sky for dry coal sludge
Gas is heated, unique thermal source that condenser A is heated up by the use of the waste heat that heat pump refrigerant circulation loop is produced as regeneration air,
Unique thermal source that condenser B is heated up by the use of refrigeration working medium in the heat that evaporator is reclaimed as air for drying sludge.
4. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the absorption
System regeneration air circulation loop carries out desorption processing, the regeneration air using low-temp recovery air to inhaling water saturated hygroscopic agent
Temperature be less than 60 degree Celsius.
5. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the absorption
The adsorbent equipment of system regeneration air circulation loop is arranged on the connecting pipe between evaporator and condenser B, adsorbent equipment
Flow setting use same fixed bed, runner or moving bed.
6. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the absorption
The heat exchanger of system regeneration air circulation loop is arranged on the connecting pipe between adsorbent equipment and condenser A, heat exchange
The cooling means of device uses air-cooled type or water-cooled.
7. the closed system of pump coupled heat absorbed type drying sludge according to claim 1, it is characterised in that the heat pump
The evaporator in cooling system working medium circulation loop and the adsorbent equipment of adsorption system regeneration air circulation loop are successively to for doing
The air of dry sludge carries out depth dehumidifying.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069576A (en) * | 2016-11-10 | 2018-05-25 | 桑尼环保（江苏）有限公司 | A kind of closed system of pump coupled heat absorbed type drying sludge |
| CN108609832A (en) * | 2018-05-07 | 2018-10-02 | 浙江大学苏州工业技术研究院 | A kind of united sludge drying mechanism of the cold and hot drying of vacuum and method |
| CN108658425A (en) * | 2018-06-12 | 2018-10-16 | 东莞理工学院 | A kind of double loop sludge Analysis of Heat Pump Drying System |
-
2016
- 2016-11-10 CN CN201621229485.2U patent/CN206467121U/en active Active
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| CN108069576A (en) * | 2016-11-10 | 2018-05-25 | 桑尼环保（江苏）有限公司 | A kind of closed system of pump coupled heat absorbed type drying sludge |
| CN108609832A (en) * | 2018-05-07 | 2018-10-02 | 浙江大学苏州工业技术研究院 | A kind of united sludge drying mechanism of the cold and hot drying of vacuum and method |
| CN108609832B (en) * | 2018-05-07 | 2023-07-07 | 浙江大学苏州工业技术研究院 | Vacuum cold and hot drying combined sludge drying device and method |
| CN108658425A (en) * | 2018-06-12 | 2018-10-16 | 东莞理工学院 | A kind of double loop sludge Analysis of Heat Pump Drying System |
| CN108658425B (en) * | 2018-06-12 | 2023-07-11 | 东莞理工学院 | Double-loop sludge heat pump drying system |
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