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真空连续盘式干燥机的工作原理和分类

信息(xi)来源:本(ben)站 | 发布日期: 2020-11-19 | 浏览量:21
关键词:真空连续盘式干燥机

  真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)连续(xu)盘式(shi)干(gan)(gan)燥(zao)(zao)(zao)机是实验(yan)室真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)冷(leng)冻干(gan)(gan)燥(zao)(zao)(zao)装置,被(bei)称为冷(leng)冻干(gan)(gan)燥(zao)(zao)(zao)装置,主要用于(yu)实验(yan)开发(fa)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)冷(leng)冻干(gan)(gan)燥(zao)(zao)(zao)材料(liao)的(de)使(shi)用。真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)连续(xu)盘式(shi)干(gan)(gan)燥(zao)(zao)(zao)机的(de)工作原理是:首先将含有(you)水(shui)分实验(yan)的(de)物(wu)质预先冻结成(cheng)固体(ti),然(ran)后在真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)环(huan)境中(zhong)进行(xing)干(gan)(gan)燥(zao)(zao)(zao)和分析,直接从固体(ti)升华成(cheng)气体(ti),去(qu)除水(shui)分,得(de)到几乎没有(you)水(shui)的(de)材料(liao)。这(zhei)里(li)介绍了一系(xi)列真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)连续(xu)盘式(shi)干(gan)(gan)燥(zao)(zao)(zao)机的(de)分类情况。

  真(zhen)空(kong)连续(xu)(xu)盘式(shi)干(gan)燥(zao)(zao)(zao)机(ji)根据开(kai)发情况分为钟(zhong)式(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)、小(xiao)型(xing)原地冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)、冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)等。其中(zhong),钟(zhong)式(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)FD系列分为普通(tong)型(xing)、压(ya)(ya)盖型(xing)、多复(fu)合管、多复(fu)合管压(ya)(ya)力罩型(xing)。原位预(yu)冻(dong)(dong)(dong)(dong)(dong)结干(gan)燥(zao)(zao)(zao)机(ji)是基于钟(zhong)复(fu)式(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)升级的(de)LFD系列冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji),具有(you)现场预(yu)冻(dong)(dong)(dong)(dong)(dong)结、工艺(yi)设(she)置(zhi)和(he)修(xiu)改、数据记录(lu)和(he)存储、冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)曲(qu)线等功能(neng),是实(shi)验冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)工艺(yi)开(kai)发的(de)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)。通(tong)常实(shi)验室(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)材料量小(xiao),所以实(shi)验室(shi)真(zhen)空(kong)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)设(she)计都是根据小(xiao)型(xing)设(she)计和(he)生产(chan),根据实(shi)验材料量的(de)要求(qiu)(qiu)增加吞吐量时,小(xiao)型(xing)真(zhen)空(kong)连续(xu)(xu)圆(yuan)盘干(gan)燥(zao)(zao)(zao)器(qi)不能(neng)满足要求(qiu)(qiu)。SFD系列中(zhong)式(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)可以处(chu)理2公斤以上的(de)原料量,同(tong)样的(de)中(zhong)式(shi)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)拥有(you)PLC电气控制系统,配备(bei)一键启动(dong)、全自(zi)动(dong)操作(zuo)的(de)智(zhi)能(neng)冷(leng)(leng)(leng)冻(dong)(dong)(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)机(ji)。

  真(zhen)空连续盘式干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)根据用途(tu)的(de)不(bu)同,冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)包括普(pu)通(tong)型(xing)冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)、盖帽型(xing)冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)、多(duo)复合管冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)等,用于制作多(duo)种实验(yan)(yan)材料。开发冻(dong)(dong)(dong)干(gan)工艺时,要确定材料的(de)共(gong)(gong)晶点和共(gong)(gong)晶点,可(ke)以选择共(gong)(gong)晶点测试仪。实验(yan)(yan)研究人员选择冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)时,必须确定实验(yan)(yan)要求。只要单(dan)纯进行冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)实验(yan)(yan),就(jiu)可(ke)以用普(pu)通(tong)的(de)钟装(zhuang)式冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)。大多(duo)数实验(yan)(yan)都(dou)需要确定冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)的(de)效率将(jiang)用于后期转(zhuan)换(huan)生产,因此冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)过程(cheng)对(dui)冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)生产至关重要。根据药品冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)、食(shi)品冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)、工业(ye)品冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)等要求,冷(leng)(leng)(leng)(leng)冻(dong)(dong)(dong)干(gan)燥(zao)(zao)(zao)(zao)(zao)机(ji)(ji)设(she)备选择功能和精度会有所(suo)不(bu)同。

  真空(kong)连续盘式干燥(zao)机组件主要包括:

  1、干燥仓(cang)库

  具有真(zhen)空和加热干燥功能的(de)密封容器(qi)。材(cai)料的(de)升华干燥过程(cheng)在干燥仓(cang)库完成(cheng)。材(cai)料放在干燥室架子上的(de)不锈钢托盘上。每个车床(chuang)都有测量(liang)材(cai)料温(wen)度(du)的(de)探头,用(yong)于在整个冷冻干燥过程(cheng)中(zhong)监控材(cai)料的(de)温(wen)度(du)。

  2、水捕(bu)手

  冷(leng)凝(ning)和(he)升(sheng)华(hua)水蒸气的(de)(de)闭(bi)合装置,通(tong)常位于干(gan)燥箱的(de)(de)后部(bu)。内部(bu)有(you)大面(mian)积的(de)(de)金(jin)属吸附表面(mian)。干(gan)燥仓库内材料升(sheng)华(hua)的(de)(de)水蒸气可(ke)以凝(ning)结在金(jin)属表面(mian)吸附。吸附表面(mian)的(de)(de)工作温度为-45~-65,冷(leng)凝(ning)器(qi)(qi)的(de)(de)形状是(shi)不锈(xiu)钢或(huo)铁制成的(de)(de)圆(yuan)筒,内部(bu)有(you)冷(leng)凝(ning)器(qi)(qi),分别与冷(leng)凝(ning)器(qi)(qi)连(lian)接,形成制冷(leng)循环系统(tong)。

  3、供暖系统

  冷冻机(ji)加(jia)(jia)热系统(tong)的(de)作用(yong)(yong)是加(jia)(jia)热干(gan)燥仓库(ku)内的(de)材料(liao),使材料(liao)持续加(jia)(jia)热升(sheng)华,以满足规定的(de)含水(shui)量要求。冷冻机(ji)加(jia)(jia)热系统(tong)的(de)加(jia)(jia)热方式主要分为接触(chu)加(jia)(jia)热和(he)辐射加(jia)(jia)热。接触(chu)加(jia)(jia)热采(cai)用(yong)(yong)循环介质加(jia)(jia)热方式。加(jia)(jia)热系统(tong)运行时,首先加(jia)(jia)热循环液体(ti),液体(ti)温度(du)由液控口气(qi)节气(qi)选择的(de)温度(du)自动控制。


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