CN202747870U - 真空换热器 - Google Patents

真空换热器 Download PDF

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CN202747870U
CN202747870U CN 201220297542 CN201220297542U CN202747870U CN 202747870 U CN202747870 U CN 202747870U CN 201220297542 CN201220297542 CN 201220297542 CN 201220297542 U CN201220297542 U CN 201220297542U CN 202747870 U CN202747870 U CN 202747870U
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vacuum heat
heat exchanger
housing
tail gas
drying tower
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董得平
李林海
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HENAN FEITIAN AGRICULTURAL DEVELOPMENT Co Ltd
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HENAN YONGCHANG FEITIAN STARCH SUGAR CO Ltd
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Abstract

本实用新型公开了一种利用生产糊精干燥塔的尾气进行回收再利用使用的真空换热器。其高温区(7)和低温区(8)用隔板(5)隔离,壳体(6)上端右侧设置空气初效过滤器(10),常温空气进口(1)和预热后空气出口(2)设置在壳体(6)上部左右端;干燥塔尾气进口(4)和干燥塔尾气出口(3)设置在壳体(6)下部左右端;喷淋清洗装置(13)设置在壳体(6)内部及真空换热管(12)外上下左右位置。由于本实用新型采用了真空换热管和喷淋清洗装置,将干燥塔尾气产生的余热进行热交换将热能回收,降低了排风温度,节约了蒸汽耗用,确保了真空管的换热和冷却效果,回收了糊精,延长了使用寿命。提高了换热效率,降低了生产成本,减少环境污染。

Description

真空换热器
技术领域:本实用新型涉及一种利用生产糊精干燥塔的尾气进行回收再利用使用的真空换热器。
背景技术:目前,生产糊精的设备干燥塔尾气废热空气全部外排,排放温度可达到75-100℃,造成能源大量浪费,且污染环境。现也有把生产糊精的设备干燥塔尾气废热再利用的设备和工艺,但由于使用的换热器的列管均为普通钢管,换热效果并不理想,另外也不具备回收了糊精的功能。
实用新型内容:本实用新型克服了原生产糊精的设备干燥塔尾气直接外排的弊端,提供了一种将干燥塔尾气产生的余热进行热交换将热能回收,实现废热再次充分利用使用的真空换热器。本实用新型的目的是通过以下技术方案实现的:其高温区7和低温区8用隔板5隔离,壳体6上端右侧设置空气初效过滤器10,低温区8的常温空气进口1设置在空气初效过滤器10右端,预热后空气出口2设置在壳体6上部左端;高温区7的干燥塔尾气进口4设置在壳体6下部右端,干燥塔尾气出口3设置在壳体6下部左端;喷淋清洗装置13设置在壳体6内部及真空换热管12外上下左右位置。
本实用新型的有益效果是:由于采用了真空换热管,将干燥塔尾气产生的余热进行热交换将热能回收,降低了排风温度,节约了蒸汽耗用,从而达到节能减排,减少环境污染,且不受冷媒或热媒介质的影响,也不会因热胀冷缩而损坏。设计了喷淋清洗装置,在不影响真空管正常工作时,可定时定期对真空管外的积垢进行喷淋清洗,确保了真空换热管的换热和冷却效果,延长了使用寿命。提高了换热效率,又回收了糊精,降低了生产成本。按节约蒸汽计算,如用200℃的蒸汽加热空气至150℃,回收508KW热量相当于节约蒸汽943Kg,全年可节约蒸汽费用160多万元。
附图说明:图1是本实用新型的结构示意图
          图2是图1的A-A向视图
具体实施方式:实施例1:如图1、图2所示,其高温区7和低温区8用隔板5隔离,壳体6上端右侧设置空气初效过滤器10,低温区8的常温空气进口1设置在空气初效过滤器10右端,预热后空气出口2设置在壳体6上部左端;高温区7的干燥塔尾气进口4设置在壳体6下部右端,干燥塔尾气出口3设置在壳体6下部左端;喷淋清洗装置13设置在壳体6内部及真空换热管12外上下左右位置。
实施例:2:如图1、图2所示,所述的真空换热管12等距水设置在壳体6内,且穿插在隔板5上,真空换热管12内为真空状态,管内真空度-0.072MPa。在溶媒温度达到60-65℃时,真空换热管内的溶媒达到沸点温度而气化,管内的液体上升转变为气体。气体在管内上升后又与外来的管外常温冷空气相遇,而使真空管内的气体得到管外冷空气的冷却,使真空管内的气体变为液体而下降。如此气、液循环便完成了合理利用废热加热回收利用的目的。
实施例3:如图1、图2所示,所述的喷淋清洗装置13设置在壳体6内部及真空换热管12外上下左右位置,清洗进口9和清洗出口11设置在壳体6下侧部两端,以确保真空换热和冷却。真空换热管在使用一定的时间后,换热管的高温区还有细小的糊精粉粒粘黏在真空换热管上,导致换热效果降低,不能最大限度的对热能回收利用。在真空换热管外上下左右位置增加喷淋清洗装置,在不影响真空换热管正常工作的情况下,可定时定期对真空换热管外的积垢进行喷淋清洗,以确保真空换热管的换热和冷却效果,延长真空换热管和真空换热器的使用寿命。喷淋清洗下来的水进入水箱则可循环使用,既提高了换热效率,又回收了糊精。

Claims (4)

1.一种真空换热器,其特征在于高温区(7)和低温区(8)用隔板(5)隔离,壳体(6)上端右侧设置空气初效过滤器(10),低温区(8)的常温空气进口(1)设置在空气初效过滤器(10)右端,预热后空气出口(2)设置在壳体(6)上部左端;高温区(7)的干燥塔尾气进口(4)设置在壳体(6)下部右端,干燥塔尾气出口(3)设置在壳体(6)下部左端;喷淋清洗装置(13)设置在壳体(6)内部及真空换热管(12)外上下左右位置。
2.根据权利要求1所述的真空换热器,其特征在于所述的真空换热管(12)等距设置在壳体(6)内,且穿插在隔板(5)上。
3.根据权利要求1所述的真空换热器,其特征在于所述的真空换热管(12)内为真空状态。
4.根据权利要求1所述的真空换热器,其特征在于所述的喷淋清洗装置(13)的清洗进口(9)和清洗出口(11)设置在壳体(6)下侧部两端。
CN 201220297542 2012-06-14 2012-06-14 真空换热器 Expired - Lifetime CN202747870U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567476A (zh) * 2015-01-05 2015-04-29 洛阳瑞昌石油化工设备有限公司 一种具有调节功能的板式空气预热装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567476A (zh) * 2015-01-05 2015-04-29 洛阳瑞昌石油化工设备有限公司 一种具有调节功能的板式空气预热装置

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