CN207738619U - A kind of sludge drying system with total heat recovery case - Google Patents

A kind of sludge drying system with total heat recovery case Download PDF

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Publication number
CN207738619U
CN207738619U CN201721460701.9U CN201721460701U CN207738619U CN 207738619 U CN207738619 U CN 207738619U CN 201721460701 U CN201721460701 U CN 201721460701U CN 207738619 U CN207738619 U CN 207738619U
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China
Prior art keywords
total heat
heat recovery
level
recovery case
gas
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CN201721460701.9U
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Chinese (zh)
Inventor
曹磊
王瑞平
赵相相
李先占
李付歉
于克铖
张兴瑞
李策
王士臣
王建成
孙乐乐
张贤
纪润波
张兰青
李金侠
董超先
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Cecep Runda (Yantai) environmental protection Co., Ltd
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YANTAI RUNDA ENVIRONMENTAL REFUSE TREATMENT CO Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model provides a kind of sludge drying system with total heat recovery case, and sludge drying system includes a mesh dryer and a total heat recovery case;Mesh dryer and total heat recovery case share same babinet, are separated by partition board.There are total heat recovery case at least two air ducts, at least two air ducts to share same cooling device and cool down to the hot and humid gas from mesh dryer;Each air duct all has rotary enthalpy recovery equipment, the hot side of rotary enthalpy recovery equipment is absorbed into the heat of the hot and humid gas of total heat recovery case, cold side is to the gas heat temperature raising after cooling and drying, by in sludge drying system hot and humid gas carry out cooling and drying, after heat up into again hot drying gas body for sludge drying system recycle.

Description

A kind of sludge drying system with total heat recovery case
Technical field
The utility model is related to total heat recovery technology, more particularly to a kind of sludge drying system with total heat recovery case.
Background technology
For the dewatered sludge of sewage treatment plant to properly dispose, it is current all Treatment of Sludge works to carry out sludge drying dehydration The necessary link of skill.Currently, domestic widespread practice is to carry out high warm to sludge by modes such as steam heating, fume afterheats Desiccation.High temperature heat drying has high energy consumption, dry vent gas treatment difficult, asking there are dust and odor pollution in drying process Topic.And steam heats and fume afterheat mode dewatered sludge, is required to obtain required thermal energy using coal-fired or gas fired-boiler, It is influenced by the multiple of polluting weathers such as green low-carbon environment-friendly policy and domestic haze, popularization and application are extremely restricted.
Low temperature sludge drying technology has been developed in recent years a kind of directly heating gas to carry out sludge using electric energy The technology of desiccation, because its drying temperature at 90 DEG C hereinafter, commonly referred to as low temperature drying technique.Traditional low temperature desiccation machine uses Single-stage or multilevel heat pump system carry out dehumidification by condensation, but since heat pump system is operated under worst hot case, cooling load is high, heat Pumping system type selecting is big, and the waste heat of required cooling load 30~50% is about generated in operational process, and waste heat is needed through outdoor wind Condenser or water condenser are excluded, and a large amount of energy waste is caused.And use the heat pump dehumidifier of plate-fin recuperator Group can only recycle the gas sensible heat less than 30% or so, heat recovery efficiency is low, leads since the return air gas temperature difference and humidity limit The cooling load of cause into heat pump system is still very high, desiccation high energy consumption, and efficiency is low.
Invention content
To solve the above-mentioned problems, the utility model proposes a kind of sludge drying systems using total heat recovery case.This reality The total heat recovery of the latent heat and sensible heat of the desiccation gas in system can be improved recuperation of heat effect with novel total heat recovery case Rate reduces heat pump system cooling load, realizes more efficient, energy-efficient sludge at low temperature desiccation.
The utility model provides a kind of sludge drying system, including a mesh dryer and a total heat recovery case.Guipure is dry Dry machine and total heat recovery case share same babinet, are separated by partition board.Total heat recovery case has at least two air ducts, at least two wind Road shares same cooling device and cools down to the hot and humid gas from the mesh dryer;Each air duct all has rotary-type full heat and returns Device is received, the hot side of rotary enthalpy recovery equipment is absorbed into the heat of the hot and humid gas of total heat recovery case, and cold side is to cooling and drying Gas heat temperature raising afterwards, by sludge drying system hot and humid gas carry out cooling and drying, after heat up into again hot drying gas body confession Sludge drying system recycles.
In one embodiment of the utility model, formed by body structure between mesh dryer and total heat recovery case Main return air access, so that the hot and humid gas for absorbing moisture in sludge in mesh dryer is entered in total heat recovery case, to carry out cooling dry It is dry to heat up again, it finally flows back in mesh dryer, forms the cycle of dry gas.
In one embodiment of the utility model, a secondary return air access, secondary return air access are also connected on main return air access On be provided with an at least refrigerant condenser, so that the portion gas in main return air access is directly over after heat temperature raising and flow back to guipure Drying machine, the supplement as dry gas.
In one embodiment of the utility model, each air duct of total heat recovery case is both provided with filter device, dry dress It sets, heat riser.
In one embodiment of the utility model, filter device is set to the heat of the rotary enthalpy recovery equipment in each air duct Before side;Filter device includes primary filter and high efficiency particulate air filter, and the gas to entering total heat recovery case is dusted removal of impurities.
In one embodiment of the utility model, the rotary-type full heat in cooling device and each air duct is arranged in drying device Between the cold side of recover;Drying device includes at least one refrigerant evaporator;Drying device to by gas condense It is dry.
In one embodiment of the utility model, heat riser be arranged each air duct rotary enthalpy recovery equipment it Afterwards;Heat riser includes at least one refrigerant condenser;Heat riser to by gas heat up, make to send mesh belt dry back to The gas temperature of machine is identical as gas temperature in mesh dryer.
In one embodiment of the utility model, at least the quantity of a refrigerant evaporator is two, and respectively level-one is cold Matchmaker's evaporator and two level refrigerant evaporator are successively arranged between cooling device and the cold side of rotary enthalpy recovery equipment, with right By gas carry out condensed in two stages drying.
In one embodiment of the utility model, the quantity of refrigerant condenser is two, and respectively level-one refrigerant condenses Device and two level refrigerant condenser, are successively arranged after the cold side of rotary enthalpy recovery equipment, with to by gas carry out two Grade heating.
In one embodiment of the utility model, pass through level-one between level-one refrigerant evaporator and level-one refrigerant condenser Medium circulation pipeline is connected, and level-one cold medium compressor and level-one refrigerant expansion valve are provided in level-one medium circulation pipeline;Two level It is connected by two level medium circulation pipeline between refrigerant evaporator and two level refrigerant condenser, is arranged in two level medium circulation pipeline There are two level cold medium compressor and two level refrigerant expansion valve.
The beneficial effects of the utility model are, by the setting of total heat recovery case by the desiccation gas in sludge drying system The sensible heat of body is all recycled with latent heat, considers the energy consumption of total heat recovery case, the comprehensive energy efficiency needed for sludge drying is than still than existing Technology improves 30% or more.
Description of the drawings
Fig. 1 is the schematic diagram of one embodiment of the total heat recovery case of the utility model;
Fig. 2 is the wind path structure schematic diagram of one embodiment of the sludge drying system of the utility model;
Fig. 3 is the equipment main perspective structural schematic diagram of one embodiment of the sludge drying system of the utility model;
Fig. 4 is the equipment side view corner structure schematic diagram of one embodiment of the sludge drying system of the utility model.
Wherein, the reference numerals are as follows:
A total heat recovery casees
B mesh dryers
1 return air access
11 main return air accesses
12 secondary return air accesses
21 primary filters
22 high efficiency particulate air filters
3 rotary enthalpy recovery equipments
4 chilled water coil surface coolers
51 level-one refrigerant evaporators
52 level-one cold medium compressors
53 level-one refrigerant condensers
54 level-one refrigerant expansion valves
55 level-one medium circulation pipelines
61 two level refrigerant evaporators
62 two level cold medium compressors
63 two level refrigerant condensers
64 two level refrigerant expansion valves
65 two level medium circulation pipelines
71 main return air access wind turbines
72 secondary return air access wind turbines
A01 box frames
A02 thermal-insulation baffle plates
B01 sludge conveyers
B02 sewage sludge feed buckets
B03 mesh belt dry box bodies
B04 upper wire bands
B05 lower net bands
B06 dewatered sludge discharge buckets
Specific implementation mode
Below with reference to attached drawing, specific embodiment through the invention carries out in detail technical solution provided by the present invention Illustrate, so that those skilled in the art carry out more specific understanding to the present invention.It should be noted that following embodiment is provided Technical solution and Figure of description only for the present invention will be described use, be not intended to limit the present invention.Below In embodiment and attached drawing, has been omitted from and be not shown with the indirect relevant element of the present invention, step;And each interelement in attached drawing Size relationship be only to ask and be readily understood by, it is non-limiting actual ratio.
One embodiment of the invention is described in detailed below, to be carried out specifically to technical solution provided by the present invention It is bright, so that those skilled in the art carry out more specific understanding to the present invention.
It is the schematic diagram of one embodiment of the total heat recovery case of the utility model referring to Fig. 1, Fig. 1.The utility model carries For a kind of total heat recovery case A, hot drying gas body is heated up into again for the hot and humid gas in sludge drying system to be carried out cooling and drying It recycles.Total heat recovery case A has a box frame A01.Total heat recovery case A has at least two air ducts, as shown in Figure 1 , it is two air ducts in left and right in the present embodiment, two air ducts share a cooling device.In the present embodiment, two wind in left and right Road is divided into upper layer and lower layer, and upper layer is hot side, and lower layer is cold side, is separated by thermal-insulation baffle plate A02.Each air duct all has a runner A formula total heat recovery device 3 and filter device, an a drying device and heat riser.Rotary enthalpy recovery equipment 3 is vertical across air duct Hot and cold sides (i.e. vertical step up lower both sides).In the present embodiment, cooling device is chilled water coil surface cooler 4, is set to a left side The shared part in right two air ducts, is located at same horizontal plane with thermal-insulation baffle plate A02.Those skilled in the art also can be according to practical need It asks, ventilated disc tube surface cooler or other suitable cooling devices and installation position, the utility model is selected to be not limited thereto. Filter device filter device includes primary filter 21 and high efficiency particulate air filter 22, and setting enters on each air duct gas path to be turned Before the hot side of wheeled total heat recovery device 3.In the present embodiment, high efficiency particulate air filter 22 is cloth envelop collector.People in the art Member can select other filters, the utility model to be not limited thereto according to actual needs.Drying device includes at least one Refrigerant evaporator is arranged on gas path between cooling device 4 and the cold side of rotary enthalpy recovery equipment 3.Drying device packet Include at least one two level refrigerant evaporator 61.In the present embodiment, two level refrigerant evaporator 61 is one, but people in the art Member can select to use more than one refrigerant evaporator according to actual conditions, and to carry out Multi-stage cooling drying, the utility model is simultaneously It is not limited.Heat riser is arranged after rotary enthalpy recovery equipment 3.Heat riser includes that at least one two level refrigerant steams Send out device 63.In the present embodiment, pass through a medium circulation pipeline between two level refrigerant evaporator 61 and two level refrigerant evaporator 63 Be connected (not shown), and cold medium compressor and refrigerant expansion valve are provided in medium circulation pipeline, forms a heat pump system (figure In be not shown).
For the total heat recovery case of the present embodiment when in applied to sludge drying system, the process of gas is as follows:It is dry from sludge The hot and humid gas come in change system enters the top of total heat recovery case A, is split into two air ducts in left and right, any of which air duct naturally In, hot and humid gas first passes through primary filter 21 and high efficiency particulate air filter 22, obtains clean, free from admixture hot and humid gas.This Step can avoid rotary enthalpy recovery equipment 3, chilled water coil surface cooler 4, two level refrigerant evaporator 61 and two level in follow-up process Refrigerant evaporator 63 generates impurity and blocks and damage.The hot side that clean hot and humid gas enters rotary enthalpy recovery equipment 3 carries out Cooling condensation, rotary enthalpy recovery equipment 3 by gas sensible heat and latent heat all recycle, heat recovery efficiency can reach 60% or more.Hot and humid gas after cooling is adjusted by chilled water coil surface cooler 4 using chilled water coil surface cooler 4 and enters heat The gas temperature of pumping system, to reduce the cooling load of the heat pump system on main refrigerant circuit circulation line, and by heat pump system Cold medium compressor operating generate waste heat be discharged drying system.Chilled water coil surface cooler 4 by temperature detection, frequency conversion fan or Ratio valve regulation is automatically controlled using PLC system realization.Gas enters two level refrigerant evaporation after chilled water coil surface cooler 4 The condensation of device 61 is dried, and the condensate moisture that gas is absorbed in systems removes, and hot and humid gas becomes dry and cold gas.Preferably, lead to Cross the evaporating temperature control of cold medium compressor makes dry and cold gas temperature that is, by expanding valve regulation and controlling the evaporating pressure of refrigerant Degree control is between 20 DEG C~35 DEG C.The heat of condensate moisture release simultaneously, is steamed by refrigerant in two level refrigerant evaporator 61 Hair enters medium circulation pipeline.Enter the cold side of rotary enthalpy recovery equipment 3 by the cold dry gas of two level refrigerant evaporator 61 Heat absorption heating is carried out, the heat in the runner core of rotary enthalpy recovery equipment 3 is recycled again.By rotary-type total heat recovery Hot drying gas body after device 3 heats further increases temperature and enthalpy finally by two level refrigerant evaporator 63, reduces hot drying gas The relative humidity of body.The heat of two level refrigerant evaporator 63 comes from the energy that heat pump system is absorbed from two level refrigerant evaporator 61 The waste heat that amount and heat pump system operating generate.Finally, hot drying gas body is heated to 60 DEG C~75 DEG C, and it is dry to be sent into sludge by wind turbine Change system carries out drying sludge.
On the basis of above-mentioned total heat recovery case, the utility model also proposes that a kind of sludge of the application total heat recovery case is dry Change system.It is the schematic diagram of one embodiment of the sludge drying system of the utility model referring to Fig. 2, Fig. 3 and Fig. 4, Fig. 2;Fig. 3 For the main perspective structural schematic diagram of one embodiment of the sludge drying system of the utility model;Fig. 4 is the dirt of the utility model The side view corner structure schematic diagram of one embodiment of mud anhydration system.
Sludge drying system includes total heat recovery case A and mesh dryer B, return air access 1, main 71 and of return air access wind turbine Secondary return air access wind turbine 72.Return air access 1 includes main return air access 11 and secondary return air access 12.Mesh dryer B and full heat are returned It is connected by main return air access 11 between receipts case A.Secondary return air access is straight after a heating device without total heat recovery case A It picks wind and returns mesh dryer B.In the present embodiment, mesh dryer B and total heat recovery case A share same babinet, by partition board every It opens.Main return air access is because mesh dryer B and total heat recovery case A share same babinet, directly according to body structure self-assembling formation Air duct, to save the setting of pipeline.Design can greatly save tube side in this way, and then reduce equipment occupation space.It is below Illustrate conveniently, still to retain the saying of " return air access " " main return air access " " secondary return air access ", however those skilled in the art It could be aware that, in the case of sharing a babinet in the present embodiment, formed indeed through the design of body structure Each " access " is stated, there is no specific pipelines.
Main return air access 11 goes out from mesh dryer B, connects primary filter 21, high efficiency particulate air filter 22, process is rotary-type By cold water surface cooler 4 (cooling device) after the hot side of total heat recovery device 3, using two refrigerant evaporators, level-one refrigerant steams Device 51 and two level refrigerant evaporator 61 are sent out, by the cold side of rotary enthalpy recovery equipment 3, using two level refrigerant evaporator 63, It is most followed by main return air access wind turbine and sends mesh dryer B back to.In addition, two level refrigerant evaporator 61 and two level refrigerant evaporator 63 it Between by two level medium circulation pipeline 65 be connected, 65 phase of two level medium circulation pipeline, which connects, is provided with two level cold medium compressor 62 With two level refrigerant expansion valve 64, a heat pump system (not shown) is formed.
It will be understood by those skilled in the art that in the present embodiment, the flow of major loop 11 is all contained in such as above-mentioned reality In the total heat recovery case A for applying example.And the total heat recovery case A of the present embodiment uses double Duct designs in such as above-described embodiment, Above-mentioned connection primary filter 21, high efficiency particulate air filter 22, rotary enthalpy recovery equipment 3, level-one refrigerant evaporator 51, two level are cold Matchmaker's evaporator 61, two level refrigerant evaporator 63, two level medium circulation pipeline 65, two level cold medium compressor 62 and two level refrigerant are swollen Swollen valve 64 is provided in each air duct, i.e., foregoing components are practical in systems 2.Shared one of two air ducts are cold But device, i.e. chilled water coil surface cooler 4.Unlike the embodiments above, there are two (level-one refrigerant evaporations for refrigerant evaporator tool Device 51 and two level refrigerant evaporator 61), the two may be contained within the cold side of chilled water coil surface cooler 4 and rotary enthalpy recovery equipment 3 Between.Wherein level-one refrigerant evaporator 51 is preceding, and two level refrigerant evaporator 61 is rear.Level-one refrigerant evaporator 51 and two level refrigerant Evaporator 61 is identical, also belongs to a heat pump system being connected to by medium circulation pipeline.It is cold with level-one in this heat pump system 51 corresponding level-one refrigerant condenser 53 of matchmaker's evaporator is set on aforementioned auxiliary return air access 12, likewise, between the two by level-one Medium circulation pipeline 55 is connected, and level-one cold medium compressor 52 and level-one refrigerant expansion valve are provided in level-one medium circulation pipeline 55 54.Unlike the case where two level medium circulation pipeline 65, although 55 upper level refrigerant evaporator of level-one medium circulation pipeline 51 there are two (double each one of the air ducts in left and right), and the corresponding level-one refrigerant condenser 53 being arranged on secondary return air access 12 can Think one, or two, the present embodiment uses one scheme.
The structure of mesh dryer B can refer to Fig. 3 and Fig. 4 in the present embodiment.As shown in the figure, mesh dryer B includes Sludge conveyer B01, sewage sludge feed bucket 202, mesh belt dry box body B03, upper wire band B04, lower net band B05 and dry dirt Mud discharge bucket B06, and drive the electric reducer of guipure.In the present embodiment, guipure is set as two up and down, preferably 1-3 Item, however those skilled in the art can select fewer or more guipure numbers, the utility model is not with this according to actual demand It is limited.
Main return air access wind turbine 71 is set to the position in total heat recovery case A after two level refrigerant evaporator 63 (in such as Fig. 1 At " air-supply " printed words), it is to control two, therefore main return air access wind turbine 71 by the air duct of total heat recovery case A in this present embodiment Also it is two.
Secondary return air access wind turbine 72 is set to the top (see Fig. 4) of total heat recovery case A, and the setting of level-one refrigerant condenser 53 exists Its lower (not shown).
In mesh dryer B, the sludge of moisture content 60~85% is sent into sewage sludge feed bucket by sludge conveyer B01 B02, subsequently into and sludge building mortion.Sludge conveyer B01 can be screw pump, plunger pump, screw conveyor or scrape Plate conveyer, those skilled in the art can select according to actual needs.Sludge molding machine is set to the lower section of feed hopper (in figure It is not shown).Sludge molding machine can be sludge pelletizer, shearing shaping device or pressure extrusion device etc..Sludge shapes Device is mounted at the top of sludge mesh dryer B, and the sludge after forming is fallen by gravity on upper wire band B04.Wet mud from One end of top layer guipure B04 starts to feed, and lower net band B05 is delivered to by electric reducer driving.Finally dry Sludge falls into dewatered sludge discharge bucket B06 from the ends lowest level guipure B05.Dewatered sludge discharge bucket B06 is arranged in lower net with B05's End, hopper are broach hopper, can store the dewatered sludge amount of 1h or more.Sludge arch breaking apparatus and spiral transferring is arranged in hopper lower pyramid mouth Send device or drag conveyor.By auger conveyor or dewatered sludge is delivered to dewatered sludge feed bin with drag conveyor or sludge is packaged Machine.The motor reducer of guipure is driven, variable-frequency governor is configured, mesh-belt operation speed and start-stop time control can be set as needed Fixed and adjustment realizes that discharging dewatered sludge moisture content 10%~40% is continuously adjustable.Pass through main return air access wind turbine 71 and secondary return air The hot drying gas body that access wind turbine 72 is sent is contacted with wet mud cross-flow, the energy evaporation in the moisture absorption hot drying gas body in sludge It is diffused into hot drying gas body, hot drying gas body is made to become hot and humid gas.The sludge of each position of guipure with high temperature, low relative humidity Hot drying gas body be in contact, dry surface wind speed is controllable, and dry motive force is big, and rate of drying is higher.The temperature of hot drying gas body is suitable At 60 DEG C~75 DEG C, the temperature of hot and humid gas controls between 45 DEG C~60 DEG C for control.The flow velocity that gas is contacted with Sludge Surface Control is in 1m/s~4m/s.It absorbs the hot and humid gas after sludge water content and exits into the A progress of total heat recovery case from mesh dryer B Cool down dehumidification by condensation, and reheats and become hot drying gas body and return again to mesh dryer B by circulating fan.
The beneficial effects of the utility model are, the total heat recovery case of the utility model and apply its sludge drying system System, using rotary enthalpy recovery equipment 3 (total heat recovery wheel), heat exchange efficiency is high, can reach 60% or more.Make drying sludge The hot and humid gas of generation, which first passes through rotary enthalpy recovery equipment 3, reduces by 60% heat content.Then pass through the cooling device (cold water of setting Coil pipe surface cooler 4), above-mentioned heat content is further decreased 20%, the waste heat generated in heat pump system operation process is offset, makes entrance The air heat enthalpy drop of heat pump system is as low as the 32% of all dry institute calorific requirements.Then it is followed by the cooling and warming of heat pump system Ring, general heat pump refrigerating COP3.2 or more, the heat pump power that consumption is actually needed are only the 10% of dry institute calorific requirement.Consider to turn The loss of wheeled total heat recovery device 3 and wind turbine, dry required comprehensive energy efficiency ratio can reach 5~8, be improved than the prior art 30% or more.

Claims (10)

1. a kind of sludge drying system with total heat recovery case, which is characterized in that the sludge drying system includes a guipure Drying machine and a total heat recovery case;The mesh dryer and the total heat recovery case share same babinet, are separated by partition board;
The total heat recovery case has at least two air ducts, and it is described to coming from that at least two air duct shares same cooling device The hot and humid gas of mesh dryer cools down;Each air duct all has rotary enthalpy recovery equipment, the rotary-type total heat recovery The hot side of device is absorbed into the heat of the hot and humid gas of the total heat recovery case, and cold side heats the gas after cooling and drying and rises Temperature, by the sludge drying system hot and humid gas carry out cooling and drying, after heat up into hot drying gas body again for sludge drying system System recycles.
2. the sludge drying system with total heat recovery case as described in claim 1, which is characterized in that the mesh dryer Main return air access is formed by body structure between the total heat recovery case, makes to absorb in sludge in the mesh dryer The hot and humid gas of moisture enters progress cooling and drying in total heat recovery case and heats up again, finally flows back in the mesh dryer, shape At the cycle of dry gas.
3. the sludge drying system with total heat recovery case as claimed in claim 2, which is characterized in that the main return air access On be also connected to a secondary return air access, be provided with an at least refrigerant condenser on the pair return air access, make the main return air access In portion gas be directly over after heat temperature raising and flow back to the mesh dryer, the supplement as dry gas.
4. the sludge drying system with total heat recovery case as claimed in claim 3, which is characterized in that the total heat recovery case Each air duct be both provided with filter device, drying device, heat riser.
5. the sludge drying system with total heat recovery case as claimed in claim 4, which is characterized in that the filter device is set It is placed in before the hot side of the rotary enthalpy recovery equipment in each air duct;The filter device includes primary filter and height Filter is imitated, the gas to entering the total heat recovery case is dusted removal of impurities.
6. the sludge drying system with total heat recovery case as claimed in claim 4, which is characterized in that the drying device is set Between the cold side for setting the rotary enthalpy recovery equipment in the cooling device and each air duct;The drying device includes At least one refrigerant evaporator;The drying device to by gas carry out condensation drying.
7. the sludge drying system with total heat recovery case as claimed in claim 5, which is characterized in that the heat riser is set It sets after the rotary enthalpy recovery equipment in each air duct;The heat riser includes at least one refrigerant condenser; The heat riser to by gas heat up, make to send back in the gas temperature and mesh dryer of the mesh dryer Gas temperature is identical.
8. the sludge drying system with total heat recovery case as claimed in claim 7, which is characterized in that an at least refrigerant The quantity of evaporator is two, respectively level-one refrigerant evaporator and two level refrigerant evaporator, be successively arranged in cooling device and Between the cold side of rotary enthalpy recovery equipment, with to by gas carry out condensed in two stages drying.
9. the sludge drying system with total heat recovery case as claimed in claim 8, which is characterized in that the refrigerant condenser Quantity be two, respectively level-one refrigerant condenser and two level refrigerant condenser are successively arranged in rotary enthalpy recovery equipment Cold side after, with to by gas carry out two-stage heating.
10. the sludge drying system with total heat recovery case as claimed in claim 9, which is characterized in that the level-one refrigerant It is connected by level-one medium circulation pipeline between evaporator and the level-one refrigerant condenser, in the level-one medium circulation pipeline It is provided with level-one cold medium compressor and level-one refrigerant expansion valve;The two level refrigerant evaporator and the two level refrigerant condenser it Between by two level medium circulation pipeline be connected, be provided with two level cold medium compressor in the two level medium circulation pipeline and two level be cold Matchmaker's expansion valve.
CN201721460701.9U 2017-11-06 2017-11-06 A kind of sludge drying system with total heat recovery case Active CN207738619U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109205990A (en) * 2018-08-28 2019-01-15 天津五洲同创空调制冷设备有限公司 A kind of steam dehumidifying mud drying device and its control system
CN109323483A (en) * 2018-11-08 2019-02-12 南京农业大学 A kind of integrated heat pump type low-temperature circulating grain drier
CN111578662A (en) * 2020-04-26 2020-08-25 上海净泥新能源科技有限公司 Intelligent recognition type condensation dehumidification mummification system
WO2022000034A1 (en) * 2020-06-30 2022-01-06 Newsouth Innovations Pty Limited Processes and systems for de-watering sludge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109205990A (en) * 2018-08-28 2019-01-15 天津五洲同创空调制冷设备有限公司 A kind of steam dehumidifying mud drying device and its control system
CN109323483A (en) * 2018-11-08 2019-02-12 南京农业大学 A kind of integrated heat pump type low-temperature circulating grain drier
CN109323483B (en) * 2018-11-08 2021-05-04 南京农业大学 Integrated heat pump type low-temperature circulating grain dryer
CN111578662A (en) * 2020-04-26 2020-08-25 上海净泥新能源科技有限公司 Intelligent recognition type condensation dehumidification mummification system
WO2022000034A1 (en) * 2020-06-30 2022-01-06 Newsouth Innovations Pty Limited Processes and systems for de-watering sludge

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