Injection Points - Quill Orientation and Flow path Guidelines required

[MattR001]

Hello,

We have a number of process injection points at our site, where an additive or water etc is injected into a process stream via a quill.

The process stream can either be vapour or liquid.

When selecting the quill orientation against the flow path (co or counter current) are there any design guidelines?

I thought that normally if it is a liquid being injected into a vapour, it is injected against the flow to allow dispersion and change of momentum (i.e not accelerate the liquid too much).

Any guidance would be appreciated.

Regards,

 

[SJones]

http://www.spray.com/products/spray_lance.asp

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[unclesyd]

When using a quill we point it upstream if in chemical process line and downstream if in a superheater. When using a quill we like to be at least 5 pipe diameters from any bends.
We have gotten way from using a quill and are using products from Komax. We use their mixers in many process lines to eliminate water hammer, concentration effect, and others.

http://www.komax.com/triple-action-mixer.html