Jump to content



Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

Blower & Vacuum Effect


This topic has been archived. This means that you cannot reply to this topic.
6 replies to this topic
Share this topic:
| More

#1 Julien123456789

Julien123456789

    Gold Member

  • Members
  • 94 posts

Posted 08 April 2016 - 03:23 AM

Dear All,

 

May I ask you a stupid question but this query make me perturbed.

At scrubber outlet line, I need to install a blower for dispatching treated gas to a height of 20 m.

What happens if I let this blower run always. Can it create a little vacuum inside the scrubber ?

 

I am sorry if this question is so ridiculous for you. I am a junior.

 

Julien.

 



#2 fallah

fallah

    Gold Member

  • ChE Plus Subscriber
  • 4,930 posts

Posted 08 April 2016 - 03:28 AM

 

At scrubber outlet line, I need to install a blower for dispatching treated gas to a height of 20 m.

What happens if I let this blower run always. Can it create a little vacuum inside the scrubber ?

 

 

Julien,

 

The blower at the scrubber outlet can produce an induced draft following which the treated gas can transfer to the destination...
 



#3 Julien123456789

Julien123456789

    Gold Member

  • Members
  • 94 posts

Posted 08 April 2016 - 03:49 AM

Thank you so much Mr. Fallah.

It means that my question is not a stupid one ?

A level of vacuum may be created if I let the blower run always (in case of using an ID blower) ?

 

When the vacuum appear due to the function of the blower, how the recirculation pump can work ? 

 

 

Julien.


Edited by Julien123456789, 08 April 2016 - 03:52 AM.


#4 samayaraj

samayaraj

    Gold Member

  • Members
  • 239 posts

Posted 08 April 2016 - 05:48 AM

Julien,

 

Blower is intended for transfer of vapor/ gas from the system. Yes, there will be drop in operating pressure in the column but not as like a vacuum pump. Check with blower data sheet and ensure the vacuum which will not hinder the re circulation pump NPSH.



#5 Julien123456789

Julien123456789

    Gold Member

  • Members
  • 94 posts

Posted 08 April 2016 - 06:08 AM

Samayaraj,

Thank you so much for your comment.

I completely agree with you at this point. A blower can create only a little vacuum.

In this case, I need to pay attention when sizing a recirculation pump for making sure that this pump can function at a this vacuum condition ?

Is is true ?

 

 

Julien



#6 samayaraj

samayaraj

    Gold Member

  • Members
  • 239 posts

Posted 08 April 2016 - 06:14 AM

I need to pay attention when sizing a recirculation pump for making sure that this pump can function at a this vacuum condition ?

Is is true ?

 

If your re circulation pump is of continuous duty, you have to make sure the pump should work satisfactorily at the vacuum condition.



#7 Julien123456789

Julien123456789

    Gold Member

  • Members
  • 94 posts

Posted 08 April 2016 - 06:16 AM

Thank you Samayaraj,

I noted it.

 

Julien






Similar Topics