CN115200318B - 一种高湿物料干燥方法 - Google Patents

一种高湿物料干燥方法 Download PDF

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CN115200318B
CN115200318B CN202110399373.0A CN202110399373A CN115200318B CN 115200318 B CN115200318 B CN 115200318B CN 202110399373 A CN202110399373 A CN 202110399373A CN 115200318 B CN115200318 B CN 115200318B
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刘学磊
秦广庆
张广庆
王成龙
吴国倩
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Jinan Zhongchang Drying Equipment Co ltd
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    • F26—DRYING
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    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
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    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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    • 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
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    • F26B23/00—Heating arrangements
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
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    • F26—DRYING
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Abstract

本发明公开了一种高湿物料干燥方法，釆用桨叶干燥机与流化床双效干燥，包括桨叶干燥机、流化床干燥机、定量进料机、密封卸料器、热水换热器、低温循环风机、低温蒸汽冷凝塔、低温冷凝水循环泵、低温冷凝水换热器等。本发明通过双效干燥***，提供了一种高湿物料***处理方法，解决高湿物料干燥过程中的物料抱团和粘堵现象，本***充分利用余热进行循环，有效的提高热能利用率，解决传统干燥过程中，尾气温度较高，干燥***能耗高的问题。

Description

一种高湿物料干燥方法
技术领域
本发明涉及一种高湿物料干燥方法，具体涉及一种桨叶干燥机与流化床双效干燥方法。
背景技术
在化工、水处理等领域，会产生大量的污泥、糟渣等，此类物料一般具有粘性较大、含水较高的特点。现有常用的处理方式是用回转圆筒干燥机进行干燥处理。由于高湿物料含水量大导致无法对干燥机进行均匀喂料，且容易出现抱团和粘堵现象。回转圆筒干燥机还存在设备结构复杂、占地面积大、造价高、维修费用高的缺点。
此外，用作干燥的工作气体具有较高的温度，在干燥完成后，工作气体的温度仍然很高，尾气会带走较多的热量，造成干燥***的总体能耗较高。
发明内容
为解决上述技术问题，本发明提供一种针对高湿热料的桨叶干燥机与流化床双效干燥方法。
本发明所采用的技术方案如下：
一种高湿物料干燥方法，包括桨叶干燥机、流化床干燥机、定量进料机、密封卸料器、热水换热器、低温循环风机、低温蒸汽冷凝塔、低温冷凝水循环泵、低温冷凝水换热器、蒸汽换热器、高温冷凝水循环泵、高温循环风机、高温蒸汽冷凝塔。
所述桨叶干燥机包括内部中空的桨叶，桨叶干燥机壳体包括有进料口、进风口、出风口。
所述流化床干燥机包括内加热装置、内除尘装置、其中内加热装置的热源可以为蒸汽、热水、导热油等，内除尘装置为布袋除尘结构。流化床干燥机得到壳体包括进料口、出料口、进风口、出风口。
所述定量加料机可以为***定量加入高湿物料；所述密封卸料器为桨叶干燥机的密封出料装置；所述热水换热器为桨叶干燥机干燥用工作气体的加热装置。所述低温循环风机为桨叶干燥机干燥的气体循环用风机；所述低温蒸汽冷凝塔为桨叶干燥机工作气体的蒸汽冷凝装置；所述低温冷凝水循环泵为低温蒸汽冷凝塔的冷凝水循环用水泵；所述低温冷凝水换热器为对低温蒸汽冷凝塔的喷淋液体进行换热的装置；所述蒸汽换热器为流化床干燥机干燥用工作气体的加热装置；所述高温冷凝水循环泵为桨叶干燥机中空桨叶内热水循环、热水换热器内热水循环以及高温蒸汽冷凝塔的喷淋用水泵；所述高温循环风机流化床干燥机干燥的气体循环用风机；所述高温蒸汽冷凝塔为流化床干燥机工作气体的蒸汽冷凝装置。
本发明在对高湿物料进行干燥时，高湿物料通过定量加料机，定量进入到桨叶干燥机中，通过桨叶的搅拌和加热，高湿物料被破碎和初步烘干，同时桨叶干燥机内的热风作为干燥工作气体和载湿气，对物料进一步干燥并将干燥产生的水蒸气带走。
高湿物料在桨叶干燥机内完成初步烘干和破碎后，通过出料口连接的密封卸料器排出，进入到流化床干燥机中进一步干燥，变为成品后排出进入包装工序。
在上述技术方案的基础上，低温循环风机从低温蒸汽冷凝塔中吸入空气，吹送到桨叶干燥机内对高湿物料进行加热，然后从桨叶干燥机出风口排出，再进入低温蒸汽冷凝塔，通过低温蒸汽冷凝塔的喷淋装置冷凝后循环使用。
进一步地，低温蒸汽冷凝塔底部带有水槽，低温冷凝水循环泵将水槽内的水打入低温冷凝水换热器中，通过换热降温后的水再喷入低温蒸汽冷凝塔中，循环利用。
进一步地，低温冷凝水换热器通过冷却介质进行降温换热过程。
更进一步的，高温循环风机从高温蒸汽冷凝塔中吸入空气，吹送到蒸汽换热器中进行换热，然后进入流化床干燥机中对物料进行烘干，同时流化床干燥机的内加热装置也对物料进行加热。流化床干燥机干燥后的尾气通过内除尘装置过滤后排出，再进入到高温蒸汽冷凝塔中，通过高温蒸汽冷凝塔的喷淋装置冷凝后循环使用。
进一步的，高温蒸汽冷凝塔底部带有水槽，高温冷凝水循环泵将水槽内的水打入桨叶干燥机中，然后进入热水换热器，再从热水换热器进入到高蒸汽冷凝塔喷淋，循环利用。
与现有技术相比，本发明具有的有益效果如下：
本发明通过双效干燥***，提供了一种高湿物料***处理方法，解决高湿物料干燥过程中的物料抱团和粘堵现象，本***充分利用余热进行循环，有效的提高热能利用率，解决传统干燥过程中，尾气温度较高，干燥***能耗高的问题。
附图说明
图1为本发明一种高湿物料***处理方法的流程图。
1.桨叶干燥机、2.流化床干燥机、3.定量进料机、4.密封卸料器、5.热水换热器、6.低温循环风机、7.低温蒸汽冷凝塔、8.低温冷凝水循环泵、9.低温冷凝水换热器、10.蒸汽换热器、11.高温冷凝水循环泵、12.高温循环风机、13.高温蒸汽冷凝塔。
具体实施方式
为便于理解本发明，本发明列举实施例如下。本领域技术人员应该明了，所述实施例仅仅用于帮助理解本发明，不应视为对本发明的具体限制。
除非另有定义或说明，本文中所使用的所有专业与科学用语与本领域技术熟练入员所熟悉的意义相同。此外任何与所记载内容相似或均等的方法及材料皆可应用于本发明方法中。除非另外说明，本文中所使用的所有专业与科学用语与本领域技术熟练人员所熟悉的意义相同。
如图1所示，本发明一种高湿物料的干燥过程具体如下：
高湿物料流程：高湿物料通过定量进料机3首先被加入到桨叶干燥机1中，桨叶干燥机1的中空桨叶中通入有热水，高湿物料被桨叶搅拌破碎的同时，与中空桨叶表面换热进行初步干燥，同时桨叶干燥机中通有热风，对高湿物料进一步干燥，干燥产生的水蒸气从桨叶干燥机出风口排出。
初步干燥后的高湿物料，通过桨叶干燥机1的出料口进入密封卸料器4，然后通过输送管道进入流化床干燥机2。在流化床干燥机2内通过热空气和内加热装置对物料进行充分干燥，变为成品从出料口排出。
干燥热风流程：桨叶干燥机1中的热风为低温循环风机6鼓入。低温循环风机6出风口与热水换热器5相连，热水换热器5与桨叶干燥机1进风口相连，气体经过热水换热器5换热后，进入桨叶干燥机1进风口，在桨叶干燥机1内进行对高湿物料进行干燥并将湿空气从桨叶干燥机1出风口带出，然后通过管道进入低温蒸汽冷凝塔7进风口，低温蒸汽冷凝塔7出风口连接低温循环风机6进风口，形成循环。
流化床干燥机2中的热风为高温循环风机12鼓入，高温循环风机12出风口与蒸汽换热器10相连，蒸汽换热器10与流化床干燥机2进风口相连，气体经过蒸汽换热器10换热后，进入流化床干燥机2中进行干燥，干燥后的尾气通过流化床干燥机2的内除尘装置进行过滤，过滤后的干净尾气从流化床干燥机2出风口排出，流化床干燥机2出风口和高温蒸汽冷凝塔13进风口相连，尾气进入高温蒸汽冷凝塔13内，通过喷淋装置进行冷凝，然后到达高温蒸汽冷凝塔13出风口，然后又进入高温循环风机12进风口，形成循环。
高温蒸汽冷凝塔13循环水流程：高温蒸汽冷凝塔13底部含有水槽，水槽中的水通过高温冷凝水循环泵11打入桨叶干燥机1的桨叶中空结构中，然后从桨叶干燥机1热水出口排出，进入热水换热器5进水口，换热后从热水换热器5出水口排出，通过管道进入高温蒸汽冷凝塔13喷淋管路，在高温蒸汽冷凝塔13中通过喷头进行喷淋。
低温蒸汽冷凝塔循环水流程：低温蒸汽冷凝塔9底部带有水槽，水槽内的水通过低温冷凝水循环泵8打入低温冷凝水换热器9中，通过换热降温后的水再进入低温蒸汽冷凝塔7喷淋管路，通过喷头喷入低温蒸汽冷凝塔7中，循环利用。
尽管上文对本发明的具体实施方式给予了详细描述和说明，但是应该指明的是，我们可以依据本发明的构想对上述实施方式进行各种等效改变和修改，其所产生的功能作用仍未超出说明书所涵盖的精神时，均应在本发明的保护范围之内。

Claims (3)

1.一种高湿物料干燥方法，采用桨叶干燥机(1)与流化床干燥机(2)进行双效干燥，所述桨叶干燥机与流化床双效干燥方法包括桨叶干燥机(1)、流化床干燥机(2)、定量进料机(3)、密封卸料器(4)、热水换热器(5)、低温循环风机(6)、低温蒸汽冷凝塔(7)、低温冷凝水循环泵(8)、低温冷凝水换热器(9)、蒸汽换热器(10)、高温冷凝水循环泵(11)、高温循环风机(12)、高温蒸汽冷凝塔(13)；
所述流化床干燥机(2)包括内加热装置、内除尘装置、其中内加热装置的热源为蒸汽或热水或导热油，内除尘装置为布袋除尘结构；
所述的一种高湿物料干燥方法，其特征在于，包括如下步骤：
高湿物料通过定量进料机(3)，定量进入到桨叶干燥机(1)中，通过桨叶的搅拌和加热，高湿物料被破碎和初步烘干，同时桨叶干燥机(1)内的热风作为干燥工作气体和载湿气，对物料进一步干燥并将干燥产生的水蒸气带走；
高湿物料在桨叶干燥机(1)内完成初步烘干和破碎后，通过出料口连接的密封卸料器(4)排出，进入到流化床干燥机(2)中进一步干燥，变为成品后排出进入包装工序；
低温循环风机(6)从低温蒸汽冷凝塔(7)中吸入空气，吹送到所述桨叶干燥机(1)内对高湿物料进行加热，然后从桨叶干燥机(1)出风口排出，再进入低温蒸汽冷凝塔(7)，通过低温蒸汽冷凝塔(7)的喷淋装置冷凝后循环使用；
高温循环风机(12)从高温蒸汽冷凝塔(13)中吸入空气，吹送到蒸汽换热器(10)中进行换热，然后进入流化床干燥机(2)中对物料进行烘干，同时流化床干燥机(2)的内加热装置也对物料进行加热；流化床干燥机(2)干燥后的尾气通过内除尘装置过滤后排出，再进入到高温蒸汽冷凝塔(13)中，通过高温蒸汽冷凝塔(13)的喷淋装置冷凝后循环使用；
高温蒸汽冷凝塔(13)底部带有水槽，高温冷凝水循环泵(11)将水槽内的水打入桨叶干燥机(1)中，然后进入热水换热器(5)，再从热水换热器(5)进入到高温蒸汽冷凝塔(13)喷淋，循环利用。
2.如权利要求1所述的一种高湿物料干燥方法，其特征在于：低温蒸汽冷凝塔(7)底部带有水槽，低温冷凝水循环泵(8)将水槽内的水打入低温冷凝水换热器(9)中，通过换热降温后的水再喷入低温蒸汽冷凝塔(7)中，循环利用。
3.如权利要求2所述的一种高湿物料干燥方法，其特征在于：低温冷凝水换热器(9)通过冷却介质进行降温换热过程。
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