Re: Pulse Dense Phase Pneumatic System
I assume that this is a dilute phase system fed by a rotary valve. Is there a feed bin above the rotary valve because of the batch operation? How do you control the conveying velocity because the pressure at the end of the line will be the same as that at the beginning?
Sounds interesting. If possible give some more details.
Regards,
Amrit Agarwal
Pneumatic Conveying Consultants ■
Pulse Pneumatic System
The Pulse System consists of a pressure tank ( low
discharge ) , a pipeline and the special end "on-off" valve.
The pressure tank was alterated to allow maximum
quantity of a powder material entering to the system.
The more material in the system the better.
The velocity of the material "jumping" from the pipeline
is the function of the pressure in the system only.
The optimal solid/air ratio for the System is between
60 and 200 depending on the length of pipeline. ■
Pulse Dense Phase Pneumatic System
Any interruption of pneumatic conveying resulting
in plugging is a nightmare for people on site.
We developed and successfully tested a new
system based on the special valve installed on the
discharge end of a pipeline. Now the conveying
consists of two successive stages: static stage
(valve closed,compressed air supply does not stop
so all pipeline is pumped up to the determined
high pressure) and transporting stage (valve is
opened,air supply-non stop,material in the pipe
under "flash effect" is rised and thrown out of the
pipe, pressure drops to the low determined value
and the valve is closed again).
Advantages of the new system:
- solid/air ratio much higher than for usual systems
- the process can be stopped and re-started many
times without cleaning the pipeline,
- material can be easily distributed between many
clients,
- interruption is one of the stages of the process,
so no plugging,no problems, and people on site
can smile all the time.
- ■