CN110388795A - 一种低压过热蒸汽热泵干燥装置 - Google Patents

一种低压过热蒸汽热泵干燥装置 Download PDF

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Publication number
CN110388795A
CN110388795A CN201810408533.1A CN201810408533A CN110388795A CN 110388795 A CN110388795 A CN 110388795A CN 201810408533 A CN201810408533 A CN 201810408533A CN 110388795 A CN110388795 A CN 110388795A
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Prior art keywords
heat pump
pressure
low
superheated steam
drying
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CN201810408533.1A
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孙纪宁
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Yang Jun Biao
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Yang Jun Biao
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • A61L2/06—Hot gas
    • A61L2/07—Steam
    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • 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
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

一种低压过热蒸汽热泵干燥装置，由耐压密闭干燥腔、循环风扇、冷凝器、搁物架、排汽管、蒸发器、压气机、冷凝水箱、真空泵组成，以低压过热蒸气为干燥介质，以热泵提供干燥热能并回收利用排气余热，提高干燥高速率、干燥能量效率和干燥质量，节约能源。

Description

一种低压过热蒸汽热泵干燥装置
技术领域：
本发明涉及一种低压过热蒸汽热泵干燥装置。
背景技术：
现有的热风干燥是一种常用的干燥技术，其缺点是干燥速率和能源效率不高，特别是低温干燥热敏性物料时，需要很长的干燥时间，能源效率也越发低下。本发明涉及一种低压过热蒸汽热泵干燥装置，通过在低压条件下以过热蒸汽为干燥介质、以热泵为热能发生和回收装置对物料进行干燥，实现提高干燥速率、能源效率和干燥质量的目的。
发明内容：
本发明所要解决的技术问题是提供一种低压过热蒸汽热泵干燥装置，在以过热蒸气为干燥介质提高干燥高速率和干燥质量的同时，回收利用排气余热，提高干燥能量效率，实现节能目的。
图1是本发明的原理图，上述目的是这样实现的：设置耐压密闭干燥腔3，干燥腔内自上而下依次设置循环风扇1、冷凝器2、被干燥的物料4、有孔搁物架5、排汽管6，冷凝器2与设置在干燥腔外部的减压阀9、蒸发器10、压气机11依次相连组成热泵系统，排汽管6与设置在干燥腔外部的蒸发器10、冷凝水箱 8、真空泵7依次相连。工作原理为：由于饱和蒸汽温度与压强成一一对应关系，二者之间只有一个独立变量，根据被干燥物料需要的温度通过《饱和蒸汽温度与对应压强表》查找出对应的压强，用真空泵7将干燥腔2抽到对应的压强，物料蒸发出来的水蒸气成为低压饱和蒸汽，蒸发水蒸气在真空泵7 的作用下流经热泵蒸发器10释放气化潜热后流入冷凝水箱8暂存，残余水蒸气和少量的泄漏空气由真空泵7排放。热泵循环气态工质经压气机11压缩后温度升高流入冷凝器2向干燥腔内的低压饱和蒸气放热，再流经减压阀8进入蒸发器9，吸收从排气管6出来的干燥排气的气化潜热后，再次流经压气机进行热泵循环，实现热能的回收利用。饱和蒸气经热泵冷凝器2加热后温度升高成为过热饱和蒸汽，在循环风扇1的作用下流向物料4向物料传热，加速物料中水份的蒸发，过热饱和蒸汽穿过搁物架5的孔隙后从四周流回热泵冷凝器2附近，并再次被加热循环流动。
本发明的优点是：采用热泵系统回收过热蒸汽潜热再利用，能源效率可达到150-300％，节能效果显著；过热蒸汽干燥比热风干燥传热系数高10 倍左右，传热效率高；低压过热蒸汽干燥不会使物料表面结壳，不会影响水份蒸发；过热蒸汽干燥无空气氧气存在，无爆炸和失火危险，也能防止蔬菜水果类物料出现酶促褐变现象；过热蒸汽比空气密度小，吹动作用弱，弄够干燥轻薄和粉末物料；过热蒸汽具有灭菌消毒作用，能消灭物料上的细菌和其他有毒微生物。
具体实施方式：
设置耐压密闭干燥腔3，干燥腔内至上而下依次设置循环风扇1、冷凝器 2、被干燥的物料4、有孔搁物架5、排汽管6，冷凝器2与设置在干燥腔外部的减压阀9、蒸发器10、压气机11依次相连组成热泵系统，排汽管6与设置在干燥腔外部的蒸发器10、冷凝水箱8、真空泵7依次相连。

Claims (1)

1.一种低压过热蒸汽热泵干燥装置，其特征是：在耐压密闭干燥腔内至上而下依次设置循环风扇、冷凝器、有孔搁物架、排汽管，冷凝器与设置在干燥腔外部的减压阀、蒸发器、压气机依次相连组成提供干燥热量的热泵系统，排汽管与设置在干燥腔外部的蒸发器、冷凝水箱、真空泵依次相连组成低压、排湿和热能回收系统。
CN201810408533.1A 2018-04-23 2018-04-23 一种低压过热蒸汽热泵干燥装置 Pending CN110388795A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116945460A (zh) * 2023-07-26 2023-10-27 青岛冠铭包装制品有限公司 一种eps发泡成型机余热循环利用装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116945460A (zh) * 2023-07-26 2023-10-27 青岛冠铭包装制品有限公司 一种eps发泡成型机余热循环利用装置
CN116945460B (zh) * 2023-07-26 2024-03-08 青岛冠铭包装制品有限公司 一种eps发泡成型机余热循环利用装置

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