-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 5913

Looking for a Simple Evaporator


We are looking for a wastewater reduction system.A promising way could be evaporator (or dryer?), but very simple one - atmospheric and without burner.I'd appreciate some tips for this product.

Frantisek Haas
- Jablonec n.N. , Czech Republic, EUROPE


Hi Frantisek

! I'm sure that you have already thought of this ... or others have suggested it.

This system works, too, for 'concentrating' very dilute chromic acid for putting back into the tanks.

The concept is to use an ordinary cheap metal fan. This is to blow into a 'box'. The box would contain 2" or so PP packing (as used for mass transfer scrubbers).

At the top of the box you could have spray jets or just a very simple 'weir' using perforated plastic (PVC) or metal. As the open area of PVC perforated sheet is not more than 26%, this means that a good and very simple distribution header can be made. To reduce this percentage further down, easy, just place either some cloth on the top of the perforated material to reduce the flow rate. Allow for 6" of water height above the perforated.

Assuming you have warm waste air, pump this through. If you want a perfect removal of any ensuing 'mist' from this crude device, use a sine curved mist eliminator blade bank @ 20 mm centres @ 5 M/s velocity design. Cheers !

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.