皮皮学,免费搜题
登录
搜题
【简答题】
薄膜蒸发器 该薄膜蒸发器品牌:VTA ,型号:VD1800-4500-SKR-G。主要有加热系统、蒸发系统、刮膜转子、进料系统、出料系统五部分组成。薄膜蒸发器因使液体形成薄膜而进行蒸发得名,薄膜蒸发器在蒸发过程可以保持在较高真空度条件下进行,由于真空度的提高,与之相应的物料沸点迅速降低,薄膜中的轻组分成为气态蒸发,重组分保持液态排出,从而达到分离的效果。 该商品进口后的用途为回收丙烯酸重组分中的丙烯酸。其工作原理是:原料通过进料系统进入蒸发器内壁,蒸发器的主体为夹套式设计,夹套内部通有加热介质导热油,操作时先要开启加热系统对原料进行加热,加热过程中刮膜转子不断将物料刮成均匀薄膜状,增加物料的传热效率,加热至所需的蒸发温度后,就能使物料轻重组分中的轻组分蒸发出来,轻组分进入分馏塔(分馏塔未进口),而没有被蒸发的重组分从蒸发器底部排出。
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】刘某出资12万元设立了一个一人有限责任公司。公司存续期间,刘某的下列行为中,符合公司法律制度规定的是( )。
【单选题】– Unfortunately, I won’t have time to visit the World Expo 2010 _____ I’m in Shanghai. – What a great pity!
A.
until
B.
since
C.
while
D.
unless
【单选题】听力原文:M: I'd like to make an appointment with the doctor for tomorrow. W: Unfortunately he is completely booked. Q: What does the woman mean? (15)
A.
The doctor will not work tomorrow.
B.
The doctor is completing a book.
C.
The man is very unfortunate.
D.
The man should make another appointment.
【单选题】Unfortunately, the packageI was expecting was _____ to the wrong address.
A.
written
B.
given
C.
packed
D.
delivered
【判断题】假冒团购网站群发一条打折团购的广告信息(内容诱人),附有链接地址。等着人点击链接、安装木马病毒( )
A.
正确
B.
错误
【单选题】听力原文:W: How did you like the Minister's speech tonight? M: Unfortunately, I got home too late to watch it. Q: What are they talking about? (17)
A.
A speech on television.
B.
A report in the newspaper.
C.
A meeting with the Minister.
D.
A telephone conversation.
【单选题】听力原文:W:How did you like the President's speech on TV yesterday evening? M:Unfortunately,I got home too late to watch it. Q:What are they talking about? (2)
A.
A speech on TV.
B.
A meeting with the President.
C.
A report in the newspaper.
D.
A telephone meeting.
【单选题】听力原文:M: I'd like to make an appointment with the doctor for tomorrow. W: Unfortunately he's completely hooked. Q: What does the woman mean? (16)
A.
The doctor's office will be closed tomorrow.
B.
The doctor's schedule is filled tomorrow.
C.
The doctor has stopped seeing new patients.
D.
The doctor can see the man tomorrow.
【单选题】I’m _____ but unfortunately we have no vacancy for that weekend. There’s a convention in town.
A.
so sorry
B.
unfortunately
C.
to be honest
【单选题】听力原文:M: I'd like to make an appointment with the doctor for tomorrow. W: Unfortunately he is completely booked. What does the woman mean? (15)
A.
The doctor has stopped seeing new patients.
B.
The doctor's office will be closed tomorrow.
C.
The doctor's schedule is filled tomorrow.
D.
The doctor can see the man tomorrow.
相关题目: