WO2018121488A1 - 可调温的四效除干燥系统 - Google Patents

可调温的四效除干燥系统 Download PDF

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Publication number
WO2018121488A1
WO2018121488A1 PCT/CN2017/118409 CN2017118409W WO2018121488A1 WO 2018121488 A1 WO2018121488 A1 WO 2018121488A1 CN 2017118409 W CN2017118409 W CN 2017118409W WO 2018121488 A1 WO2018121488 A1 WO 2018121488A1
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Prior art keywords
evaporator
air
condenser
regenerator
inlet
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PCT/CN2017/118409
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English (en)
French (fr)
Inventor
石曾矿
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石曾矿
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Publication date
Application filed by 石曾矿 filed Critical 石曾矿
Priority to KR1020197015872A priority Critical patent/KR102098103B1/ko
Priority to US16/465,153 priority patent/US11204197B2/en
Publication of WO2018121488A1 publication Critical patent/WO2018121488A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • F26B23/005—Heating arrangements using waste heat recovered from dryer exhaust gases using a closed cycle heat pump system ; using a heat pipe system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse 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

Definitions

  • the invention relates to the field of drying equipment, in particular to a temperature-adjustable four-effect drying system.
  • sludge belt drying has attracted much attention due to its strong adaptability to wet sludge, low maintenance parts, long service life and low drying temperature. It has a good market application prospect; heat pump dehumidification combined with mesh belt drying
  • the mud drying technology is a new trend of sludge belt drying. It has great advantages in energy saving and environmental protection. The sludge heat pump dehumidification drying technology will dominate the sludge belt drying.
  • the dehumidification performance of the existing dehumidification heat pump drying equipment is affected by the working conditions.
  • the drying process requires external air cooling or cooling water for temperature adjustment, the temperature adjustment range is small, the dehumidification amount is small, and the external air cooling type causes hot air outside.
  • the object of the present invention is to overcome the deficiencies of the prior art described above, and to provide a temperature-adjustable four-effect drying system with high efficiency, compact structure, small floor space, no odor emission and short processing period.
  • the technical solution of the present invention is: a temperature-adjustable four-effect drying system comprising at least two sets of dehumidification heat pump assemblies and a set of auxiliary heat exchange components, the dehumidification heat pump assembly including at least one refrigerant module And an air module, the refrigerant module including a condenser, an evaporator, and a compressor, the compressor outlet being connected to an inlet of the condenser, an outlet of the condenser passing through an expansion valve and an inlet of the evaporator Connecting, the outlet of the evaporator is connected to the compressor inlet; the auxiliary heat exchange assembly is formed by a series connection of at least two heat exchangers through a pipeline; the air module includes an intake pipe and a regenerator, The inlet duct is connected to the hot side of the regenerator through a heat exchanger, and the hot side of the regenerator is connected to the evaporator through a duct, and the evaporator is connected to the
  • the dehumidification heat pump assembly includes two refrigerant modules and an air module, the refrigerant module is composed of a primary refrigeration module and a secondary refrigeration module, and the primary refrigeration module includes a primary condenser, a primary evaporator, and a compressor, the compressor outlet being connected to an inlet of the primary condenser, an outlet of the primary condenser being connected to an inlet of the primary evaporator through an expansion valve, the outlet of the primary evaporator An inlet of the compressor is connected; the secondary refrigeration module includes a secondary condenser, a secondary evaporator, and a compressor, the compressor outlet is connected to an inlet of the secondary condenser, the secondary condenser The outlet is connected to the inlet of the secondary evaporator via an expansion valve, the outlet of which is connected to the inlet of the compressor.
  • the first heat exchanger and the second heat exchanger on the auxiliary heat exchange assembly are respectively mounted on a hot side of the first regenerator of the first dehumidification heat pump assembly and a second regenerator of the second dehumidification heat pump assembly Hot side.
  • the air inlet pipe of the air module of the first dehumidification heat pump assembly is connected to the hot side of the first heat exchanger and the first regenerator through an air filter, and the hot side of the first regenerator passes through the air duct and a
  • the first stage evaporator and the second stage evaporator are connected, the first stage evaporator and the second stage evaporator are connected to the cold side of the first regenerator through the air duct, and the cold side of the first regenerator passes through the duct and the second stage
  • the condenser is connected, and the air from the secondary condenser is led to the air supply port, and the air supply port is provided with a blower.
  • the inlet duct of the second air module of the second dehumidification heat pump assembly is connected to the hot side of the second heat exchanger and the second regenerator through an air filter, and the hot side of the second regenerator passes through the duct
  • the primary evaporator and the secondary evaporator are connected to the cold side of the second regenerator through a duct, and the second regenerator is cooled
  • the side is connected to the secondary condenser through a duct, and the air from the secondary condenser is led to the air supply port, and the air supply port is provided with a blower.
  • the primary condenser is a wind condenser, and a cooling fan group is disposed on the wind condenser for heat dissipation.
  • a refrigerant inlet and a refrigerant outlet are disposed on the circulation circuit; the refrigerant inlet is connected to the cooling water pipe, and the refrigerant outlet is connected to the cooling water discharge pipe.
  • a heat exchanger is connected between the evaporator and the compressor.
  • a filter is disposed between the heat exchanger and the expansion valve.
  • Two sets of the dehumidification heat pump assemblies are disposed in the heat insulation casing, and are respectively located at two sides of the heat insulation casing, and a mixing air chamber and a drying chamber separated by the partition plates are disposed in the heat insulation casing.
  • An air filter is disposed on the heat insulating housing corresponding to the humid heat pump assembly, and an upper filter is disposed on the air filter.
  • the first regenerator and the second regenerator are disposed between the first regenerator and the second regenerator in a middle portion of the thermal insulation housing to form a mixed air chamber, and the lower sides of the mixed air chamber respectively Install the primary evaporator and secondary evaporator.
  • the invention has the following advantages: the dehumidification amount can be increased by more than 10%; the closed drying process can be realized, no odor emission occurs during the sludge drying process, and no deodorizing device is installed; the circulating air volume and the dehumidification air volume are separately designed.
  • the sludge drying cycle can be shortened and the sludge drying dust can be prevented; the external structure of the circulating fan and the main fan (dehumidifying fan) can meet the structural requirements of the sludge drying model structure and reduce the volume of the main structure of the dehumidifying heat pump; Compact, small footprint, small maintenance space, equipment only needs to set up a maintenance space in one direction, which can fully meet the modular structure requirements of the dryer.
  • FIG. 1 is a schematic flow chart of a temperature-adjustable four-effect drying system of the present invention
  • Figure 2 is a schematic diagram of the air flow structure of the temperature-adjustable four-effect drying system of the present invention
  • FIG. 3 is a schematic diagram of the air flow structure of the temperature-adjustable four-effect drying system of the present invention.
  • the temperature-adjustable four-effect drying system includes at least two sets of dehumidification heat pump components and a set of auxiliary heat exchange components.
  • the auxiliary heat exchange assembly is formed by connecting at least two heat exchangers (4, 12) through a pipeline to form a circulation loop, and a refrigerant inlet and a refrigerant outlet are disposed on the circulation loop.
  • An electric proportional valve 8 is provided on the refrigerant inlet.
  • a control valve is disposed at the refrigerant inlet and the refrigerant outlet.
  • the dehumidification heat pump assembly includes two refrigerant modules and an air module, the refrigerant module is composed of a primary refrigeration module and a secondary refrigeration module, and the primary refrigeration module includes a primary condenser 2 and a primary evaporator.
  • the outlet of the compressor 18 is connected to the inlet of the primary condenser 2, and the outlet of the primary condenser 12 is connected to the inlet of the primary evaporator 7 through an expansion valve 23,
  • An outlet of the primary evaporator 7 is connected to an inlet of the compressor 18;
  • the secondary refrigeration module includes a secondary condenser 16, a secondary evaporator 6, and a compressor 8, the compressor 18 outlet and the The inlet of the secondary condenser 16 is connected to the outlet of the secondary condenser 16 via an expansion valve 23 to the inlet of the secondary evaporator 6, the outlet of the secondary evaporator 16 and the inlet of the compressor 18.
  • the air inlet pipe of the air module is connected to the hot side of the first heat exchanger 4 and the first regenerator 5 through the air filter 3, and the hot side of the first regenerator 5 passes through the air duct and a Stage evaporator 7 is connected to secondary evaporator 6, said primary evaporator 7 and secondary evaporation
  • the air conditioner is connected to the cold side of the first regenerator 5 through a duct, and the cold side of the first regenerator 5 is connected to the secondary condenser 16 through a duct, and the air from the secondary condenser 16 is led to the air.
  • the air outlet is provided with a blower 15 at the air outlet.
  • a heat exchanger 17 is connected between the evaporator (the primary evaporator 7 and the secondary evaporator 6) and the compressor 18.
  • a filter 19 is disposed between the heat exchanger 17 and the expansion valve 23.
  • the inlet duct of the second air module is connected to the hot side of the second heat exchanger 12 and the second regenerator 11 through the air filter 3, and the second regenerator
  • the hot side of 11 is connected to the primary evaporator 7 and the secondary evaporator 6 of another set of dehumidification heat pump assemblies through a duct, the primary evaporator 7 and the secondary evaporator 6 passing through the duct and the second regenerator
  • the cold side of the second regenerator 11 is connected to the secondary condenser 16 through the air duct, and the air from the secondary condenser 16 is led to the air supply port, and the air supply port 15 is provided with the air blower.
  • a heat exchanger 17 is connected between the evaporator (the primary evaporator 7 and the secondary evaporator 6) and the compressor 18.
  • a filter 19 is disposed between the heat exchanger 17 and the expansion valve 23.
  • the primary condenser is a wind condenser, and a cooling fan group 1 is disposed on the wind condenser for heat dissipation.
  • the refrigerant inlet is connected to a cooling water pipe, and the refrigerant outlet is connected to the cooling water discharge pipe.
  • Two sets of dehumidifying heat pump assemblies are disposed in the heat insulating housing 26 and are respectively located at two sides of the heat insulating housing 26, and a mixing chamber and a drying chamber separated by the partitions 28 are disposed in the heat insulating housing 26.
  • An air filter 3 is disposed on the heat insulating casing 26 corresponding to the moist heat pump assembly, and an upper filter is disposed on the air filter.
  • the first regenerator 5 and the second regenerator 12 are disposed between the first regenerator 5 and the second regenerator 12 in the middle of the heat preservation housing 26 to form a mixed air chamber.
  • the first stage evaporator 6 and the second stage evaporator 7 are respectively installed on both sides of the lower part of the mixed air chamber.
  • the condensers are respectively located on both sides of the central portion of the heat insulating housing 26.
  • An air filter 2 is disposed on the heat insulating casing 26 corresponding to the wet heat pump assembly, and an upper filter is disposed on the air filter 2.
  • refrigerant contains inorganic compounds, fluoride pure working fluids, hydrocarbons or mixed refrigerants
  • the invention adopts the four-effect (four-stage) cooling process to improve the air cooling capacity, and the relative humidity of the air after treatment is lower; the cooling device cools the air by using the cooling water cooling process, and simultaneously dehumidifies the air during the cooling process, and improves the dehumidification of the unit. The quantity and the power consumption of the unit are reduced.
  • the cooling water flow rate to adjust the air temperature, different drying temperature adjustments can be realized to achieve different types of sludge drying; the circulating air volume and the dehumidifying air volume are separately designed, and the water content is increased by increasing the circulating air volume.
  • High temperature and rapid drying; direct discharge (cooling) by condenser condensation heat, can achieve closed drying process, no odor emission during sludge drying, no need to install deodorizing device; use circulating fan, main fan (dehumidification)
  • the external structure of the fan can meet the design requirements of the sludge drying model structure and reduce the volume of the main structure of the dehumidification heat pump; the equipment is compact in structure, small in floor space, small in maintenance space, and the equipment only needs to set a maintenance space in one direction, which can be fully adapted.
  • the overall dehumidification performance ratio of the sludge drying dehumidification heat pump is improved by providing four (or more) compressors.
  • An instrument panel is disposed on the heat insulating housing 26 to monitor the operating state of each device during operation.
  • the instrument panel can be equipped with parameters such as dry room temperature, humidity, outlet air temperature, power supply indication, compressor operation, fan operation, auxiliary fan operation, indication setting operation, stop button, fan manual, automatic button fault indication and reset.
  • a control box is arranged in the bracket and the outer casing, and a control function module including a compressor, a fan strong electric control device, and dehumidification, refrigeration, heating, ventilation, and the like can be disposed in the control box.
  • the regenerator (3, 11) is a plate-fin type regenerator, that is, a plate-fin heat exchanger.
  • the plate-fin regenerator consists of a partition plate, a fin, a seal, and a baffle. A fin and a baffle are placed between adjacent partitions to form an interlayer, and the sandwich is laminated and brazed into a whole bundle. With the necessary head support.
  • the fins may be straight fins, serrated fins, porous fins, corrugated fins.
  • the evaporator is a finned tube evaporator.
  • the finned tube evaporator consists of a base pipe and fins, and the fins are mounted on the base pipe; the base pipe is made of a copper tube or an internally threaded copper tube; the fins are corrugated sheets of aluminum or copper material, skylights or corrugated skylights. formula.
  • the condenser is a fin-and-tube heat exchanger; the fin-and-tube heat exchanger is composed of a base pipe and fins, and the fins are mounted on the base pipe; the base pipe is made of a copper tube or an internally-threaded copper tube; the fin is aluminum Or corrugated sheet of corrugated material, skylight or corrugated skylight.
  • the bracket in the insulation of the shell shall be made of steel, sheet metal or aluminum alloy; the shell may be a composite insulation board with thermal insulation properties, the thickness of the insulation layer shall not be less than 25mm, or the inner layer of the composite panel shall have good corrosion resistance.
  • the separator 28 can be made of a galvanized sheet or an aluminum sheet which is excellent in corrosion resistance.
  • the water receiving tray can be made of corrosion-resistant aluminum or stainless steel; the condensate drain can be made of hot-dip galvanized steel or stainless steel, and has a trap.
  • the primary condenser can be shell-and-tube, brazed or sleeved, and its water flow should be considered for corrosion resistance.

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  • General Engineering & Computer Science (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

一种可调温的四效除干燥系统，包括至少两套除湿热泵组件和一组辅助换热组件，除湿热泵组件包括至少一个制冷剂模块和一个空气模块；辅助换热组件由至少两个换热器（4,12）通过循环管路串接组成，在循环管路上设置冷媒进口和冷媒出口。该干燥除湿系统可提高除湿量10％以上，设备结构紧凑，占地面积小，维修空间小。

Description

可调温的四效除干燥系统 【技术领域】
本发明涉及干燥设备领域，具体为一种可调温的四效除干燥系统。
【背景技术】
目前，常用的干化系统主要以直接干燥转鼓式工艺、多层台阶式干化工艺、转盘式干化工艺、流化床干化工艺等为主。然而，污泥带式干燥因对湿污泥适应性强、维修部件少、使用寿命长、干燥温度低等优势，受到广泛关注，具有很好的市场应用前景；热泵除湿结合网带式干燥污泥干化技术为污泥带式干燥一种新趋势，其在节能性、环保性等方面具有很大的优势，污泥热泵除湿干化技术将主导污泥带式干燥。
但是，现有除湿热泵干燥设备的除湿性能受工况影响，干燥过程需要外界空气冷却或冷却水进行温度调节，调温调节范围小，除湿量偏小；采用外界空气冷却式会造成热空气外泄且异味排出，影响周边环境；无法适合污泥干燥过程中干燥阶段不同风量要求；无法适合物料干燥过程中干燥阶段不同温度、湿度要求；无法实现干燥温度自动调整，无法实现较低温度条件下干燥特别是实现低温干燥；对于物料含水率较高时循环风量偏小，干燥周期长；占地面积较大、维修空间大，无法满足模块式结构要求。
【发明内容】
本发明的目的在于克服以上所述现有技术存在的不足，提供一种效率高，结构紧凑、占地面积小、没有异味排放及处理周期短的可调温的四效除干燥系统。
为达到上述目的，本实用新型发明的技术方案是：可调温的四效除干燥系统，包括至少两套除湿热泵组件和一组辅助换热组件，所述除湿热泵组件包括至少一个制冷剂模块和一个空气模块，所述制冷剂模块包括冷凝器、蒸发器和 压缩机，所述压缩机出口与所述冷凝器的入口连接，所述冷凝器的出口通过膨胀阀与所述蒸发器的入口连接，所述蒸发器的出口与所述压缩机入口连接；所述辅助换热组件由至少两个换热器通过管道串接形成循环回路；所述空气模块包括进气管和回热器，所述进风管通过换热器与所述回热器的热侧连接，所述回热器的热侧通过风管与蒸发器连接，所述蒸发器通过风管与回热器的冷侧连接，回热器冷侧通过风管与所述冷凝器连接，冷凝器出来的空气被引向送风口。
所述除湿热泵组件包括两个制冷剂模块和一个空气模块，所述制冷剂模块由一级制冷模块和二级制冷模块组成，所述一级制冷模块包括一级冷凝器、一级蒸发器和压缩机，所述压缩机出口与所述一级冷凝器的入口连接，所述一级冷凝器的出口通过膨胀阀与所述一级蒸发器的入口连接，所述一级蒸发器的出口与所述压缩机的入口连接；所述二级制冷模块包括二级冷凝器、二级蒸发器和压缩机，所述压缩机出口与所述二级冷凝器的入口连接，所述二级冷凝器的出口通过膨胀阀与所述二级蒸发器的入口连接，所述二级蒸发器的出口与所述压缩机的入口连接。
所述辅助换热组件上的第一换热器和第二换热器分别安装于第一除湿热泵组件的第一回热器的热侧和第二除湿热泵组件的的第二回热器的热侧。
第一除湿热泵组件的所述空气模块的进风管通过空气过滤器与第一换热器和所述第一回热器的热侧连接，第一回热器的热侧通过风管与一级蒸发器和二级蒸发器连接，所述一级蒸发器和二级蒸发器通过风管与第一回热器的冷侧连接，第一回热器冷侧通过风管与所述二级冷凝器连接，二级冷凝器出来的空气被引向送风口，所述送风口设置送风机。
第二除湿热泵组件的第二空气模块的进风管通过空气过滤器与所述第二换热器和所述第二回热器的热侧连接，第二回热器的热侧通过风管与另一套除湿热泵组件的一级蒸发器和二级蒸发器连接，所述一级蒸发器和二级蒸发器通过风管与第二回热器的冷侧连接，第二回热器冷侧通过风管与所述二级冷凝器连接，二级冷凝器出来的空气被引向送风口，所述送风口设置送风机。
所述一级冷凝器为风泠凝器，在所述风冷凝器上设置冷却风扇组进行散热。
所述循环回路上设置冷媒进口和冷媒出口；所述冷媒进口与冷却水管连接，所述冷媒出口连接冷却水排出管。
在所述蒸发器与压缩机之间连接热交换器。
在所述热交换器与所述膨胀阀之间设置过滤器。
两套所述除湿热泵组件设置在保温壳体内，且分别位于保温壳体两侧，在所述保温壳体内设置由隔板相隔的混风腔和干燥室。
在所述保温壳体上对应于所述湿热泵组件分别设置空气过滤器，在空气过滤器上设置上层过滤器。
所述第一回热器和第二回热器设置在所述保温壳体中部所述第一回热器和第二回热器之间形成混风腔，所述混风腔下部两侧分别安装一级蒸发器和二级蒸发器。
与现有技术相比，本发明有如下优点：可提高除湿量10％以上；可以实现密闭式干燥过程，污泥干燥过程中没有异味排放，无需安装除臭装置；分开设计循环风量及除湿风量，可以缩短污泥干燥周期且防止污泥干燥粉尘产生；采用循环风机、主风机(除湿风机)外置结构，可满足污泥干燥模型结构设计要求同时减小除湿热泵主体结构体积；该设备结构紧凑，占地面积小，维修空间小，设备只需设置一个方向维修空间，可以充分适合干燥机模块式结构要求。
【附图说明】
图1是本发明可调温的四效除干燥系统的流程原理图；
图2是本发明可调温的四效除干燥系统的空气流程结构原理图1；
图3是本发明可调温的四效除干燥系统的空气流程结构原理图2。
【具体实施方式】
以下结合附图和具体实施例对本发明进行详细的说明。
可调温的四效除干燥系统，如图1-3所示，包括至少两套除湿热泵组件和一组辅助换热组件。所述辅助换热组件由至少两个换热器(4，12)通过管道串接形成循环回路，在所述循环回路上设置冷媒进口和冷媒出口。在所述冷媒进口上设置电动比例阀8。所述冷媒进口和冷媒出口处设置控制阀。所述除湿热泵 组件包括两个制冷剂模块和一个空气模块，所述制冷剂模块由一级制冷模块和二级制冷模块组成，所述一级制冷模块包括一级冷凝器2、一级蒸发器7和压缩机18，所述压缩机18出口与所述一级冷凝器2的入口连接，所述一级冷凝器12的出口通过膨胀阀23与所述一级蒸发器7的入口连接，所述一级蒸发器7的出口与所述压缩机18的入口连接；所述二级制冷模块包括二级冷凝器16、二级蒸发器6和压缩机8，所述压缩机18出口与所述二级冷凝器16的入口连接所述二级冷凝器16的出口通过膨胀阀23与所述二级蒸发器6的入口连接，所述二级蒸发器16的出口与所述压缩机18的入口连接；所述空气模块的进风管通过空气过滤器3与第一换热器4和所述第一回热器5的热侧连接，第一回热器5的热侧通过风管与一级蒸发器7和二级蒸发器6连接，所述一级蒸发器7和二级蒸发器6通过风管与第一回热器5的冷侧连接，第一回热器5冷侧通过风管与所述二级冷凝器16连接，二级冷凝器16出来的空气被引向送风口，所述送风口设置送风机15。在所述蒸发器(一级蒸发器7和二级蒸发器6)与压缩机18之间连接热交换器17。所述热交换器17与所述膨胀阀23之间设置过滤器19。
在另一套除湿热泵组件中，第二空气模块的进风管通过空气过滤器3与所述第二换热器12和所述第二回热器11的热侧连接，第二回热器11的热侧通过风管与另一套除湿热泵组件的一级蒸发器7和二级蒸发器6连接，所述一级蒸发器7和二级蒸发器6通过风管与第二回热器11的冷侧连接，第二回热器11冷侧通过风管与所述二级冷凝器16连接，二级冷凝器16出来的空气被引向送风口，所述送风口设置送风机15。在所述蒸发器(一级蒸发器7和二级蒸发器6)与压缩机18之间连接热交换器17。所述热交换器17与所述膨胀阀23之间设置过滤器19。
所述一级冷凝器为风泠凝器，在所述风冷凝器上设置冷却风扇组1进行散热。所述冷媒进口与冷却水管连接，所述冷媒出口连接冷却水排出管。两套除湿热泵组件设置在保温壳体26内，且分别位于保温壳体26两侧，在所述保温壳体26内设置由隔板相隔28的混风腔和干燥室。在所述保温壳体26上对应 于所述湿热泵组件分别设置空气过滤器3，在空气过滤器上设置上层过滤器。优选的，所述第一回热器5和第二回热器12设置在所述保温壳体26中部所述第一回热器5和第二回热器12之间形成混风腔，所述混风腔下部两侧分别安装一级蒸发器6和二级蒸发器7。冷凝器分别位于保温壳体26中部两侧。在所述保温壳体26上对应于所述湿热泵组件分别设置空气过滤器2，在空气过滤器2上设置上层过滤器。
工作原理如下：
制冷剂流程原理图(制冷剂包含无机化合物、氟化物纯工质、碳氢化合物或混合制冷剂)
2.2.11#一级制冷剂流程
Figure PCTCN2017118409-appb-000001
2.2.21#二级制冷剂流程
Figure PCTCN2017118409-appb-000002
2.2.32#一级制冷剂流程
Figure PCTCN2017118409-appb-000003
2.2.42#二级制冷剂流程
Figure PCTCN2017118409-appb-000004
Figure PCTCN2017118409-appb-000005
本发明采用四效(四级)降温过程，提高了空气降温能力，处理后空气相对湿度更低；采用冷却水降温过程表冷器对空气进行降温，降温过程同时实现空气除湿，提高机组的除湿量，同时机组耗电量降低；通过调节冷却水水流量实现对空气温度调节，可以实现不同干燥温度调节从而实现不同类别污泥干燥；分开设计循环风量及除湿风量，通过增大循环风量实现含水率较高温度快速干燥；采用压缩机冷凝热直接向外排放(冷却)，可以实现密闭式干燥过程，污泥干燥过程中没有异味排放，无需安装除臭装置；采用循环风机、主风机(除湿风机)外置结构，可满足污泥干燥模型结构设计要求同时减小除湿热泵主体结构体积；该设备结构紧凑，占地面积小，维修空间小，设备只需设置一个方向维修空间，可以充分适合污泥干燥机模块式结构要求；采用现有空气回热技术及双级制冷技术除湿热泵(三效除湿热泵)基础上，通过设置四台(或多台)压缩机，提高污泥干燥除湿热泵整体除湿性能比。
采用现有空气回热技术及双级制冷技术除湿热泵(三效除湿热泵)基础上，通过设置四台(或多台)压缩机，提高污泥干燥除湿热泵整体除湿性能比。
保温壳体26上设置有仪表盘，以监控工作过程中各个设备的运行状态。仪表盘上可以设置有干燥室内温度、湿度、出口风温、电源指示、压缩机运行、风机运行、辅助风机运行、指示设置运行、停止按钮，风机手动、自动按钮故障指示及复位等参数显示。支架及外壳内设置有控制箱，控制箱内可以设置包括压缩机、风机强电控制装置以及除湿、制冷、加热、通风等控制功能模块。
回热器(3，11)为板翅式回热器，即板翅型换热器。板翅式回热器由隔板、翅片、封条、导流片组成，在相邻隔板之间放置翅片和导流片组成夹层，将夹层叠置起来，钎焊成一整体组成板束，配以必要的封头支撑。翅片可以为平直翅片、锯齿翅片、多孔翅片、波纹翅片。
蒸发器为翅片管式蒸发器。翅片管式蒸发器由基管和翅片组成，翅片安装在基管上；基管采用铜光管或内螺纹铜管；翅片为铝或者铜材料的波纹片、天窗式或波纹天窗式。冷凝器为翅片管式换热器；翅片管式换热器由基管和翅片 组成，翅片安装在基管上；基管采用铜光管或内螺纹铜管；翅片为铝或者铜材料的波纹片、天窗式或波纹天窗式。壳体保温中的支架应采用型钢材、板金加工或铝合金型材；外壳可以为具备保温性能的复合保温板，保温层厚度不小于25mm，也可以为复合板内层板应具防腐蚀性能良好的热镀锌钢板、铝板或不锈钢板。隔板28可以采用耐腐蚀性好的镀锌板或者铝板制作。接水盘可以采用耐腐蚀铝板或者不锈钢板；凝结水排放管可以采用热镀锌钢管或不锈钢管，并有存水弯头设置。一级冷凝器可以是采用壳管式、钎焊板式或套管式，其水流程应考虑耐腐蚀性。
以上所述者，仅为本发明的较佳实施例而已，当不能以此限定本发明实施的范围，即大凡依本发明申请专利范围及发明说明内容所作的简单的等效变化与修饰，皆仍属本发明专利涵盖的范围内。

Claims (10)

  1. 可调温的四效除干燥系统，其特征在于，包括至少两套除湿热泵组件和一组辅助换热组件，所述除湿热泵组件包括至少一个制冷剂模块和一个空气模块，所述制冷剂模块包括冷凝器、蒸发器和压缩机，所述压缩机出口与所述冷凝器的入口连接，所述冷凝器的出口通过膨胀阀与所述蒸发器的入口连接，所述蒸发器的出口与所述压缩机入口连接；所述辅助换热组件由至少两个换热器通过管道串接形成循环回路；所述空气模块包括进气管和回热器，所述进风管通过换热器与所述回热器的热侧连接，所述回热器的热侧通过风管与蒸发器连接，所述蒸发器通过风管与回热器的冷侧连接，回热器冷侧通过风管与所述冷凝器连接。
  2. 根据权利要求1所述的可调温的四效除干燥系统，其特征在于，所述除湿热泵组件包括两个制冷剂模块和一个空气模块，所述制冷剂模块由一级制冷模块和二级制冷模块组成，所述一级制冷模块包括一级冷凝器、一级蒸发器和压缩机，所述压缩机出口与所述一级冷凝器的入口连接，所述一级冷凝器的出口通过膨胀阀与所述一级蒸发器的入口连接，所述一级蒸发器的出口与所述压缩机的入口连接；所述二级制冷模块包括二级冷凝器、二级蒸发器和压缩机，所述压缩机出口与所述二级冷凝器的入口连接，所述二级冷凝器的出口通过膨胀阀与所述二级蒸发器的入口连接，所述二级蒸发器的出口与所述压缩机的入口连接。
  3. 根据权利要求2所述的可调温的四效除干燥系统，其特征在于，所述辅助换热组件上的第一换热器和第二换热器分别安装于第一除湿热泵组件的第一回热器的热侧和第二除湿热泵组件的的第二回热器的热侧。
  4. 根据权利要求3所述的可调温的四效除干燥系统，其特征在于，第一除湿热泵组件的所述空气模块的进风管通过空气过滤器与第一换热器和所述第一回热器的热侧连接，第一回热器的热侧通过风管与一级蒸发器和二级蒸发器连接，所述一级蒸发器和二级蒸发器通过风管与第一回热器的冷侧连接，第一回 热器冷侧通过风管与所述二级冷凝器连接，二级冷凝器出来的空气被引向送风口。
  5. 根据权利要求4所述的可调温的四效除干燥系统，其特征在于，第二除湿热泵组件的第二空气模块的进风管通过空气过滤器与所述第二换热器和所述第二回热器的热侧连接，第二回热器的热侧通过风管与另一套除湿热泵组件的一级蒸发器和二级蒸发器连接，所述一级蒸发器和二级蒸发器通过风管与第二回热器的冷侧连接，第二回热器冷侧通过风管与所述二级冷凝器连接，二级冷凝器出来的空气被引向送风口。
  6. 根据权利要求5所述的可调温的四效除干燥系统，其特征在于，所述一级冷凝器为风泠凝器，在所述风冷凝器上设置冷却风扇组进行散热。
  7. 根据权利要求1所述的可调温的四效除干燥系统，其特征在于，所述循环回路上设置冷媒进口和冷媒出口；所述冷媒进口与冷却水管连接，所述冷媒出口连接冷却水排出管。
  8. 根据权利要求1所述的可调温的四效除干燥系统，其特征在于，在所述蒸发器与压缩机之间连接热交换器。
  9. 根据权利要求8所述的可调温的四效除干燥系统，其特征在于，在所述热交换器与所述膨胀阀之间设置过滤器。
  10. 根据权利要求1所述的可调温的四效除干燥系统，其特征在于，两套所述除湿热泵组件设置在保温壳体内，且分别位于保温壳体两侧，在所述保温壳体内设置由隔板相隔的混风腔和干燥室。
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