How the powder coating booth cyclone recovery system works

Each powder coating booth has a powder recovery system to capture and recycle overspray powder to reducing waste and keep a dustfree workshop.

A complete cyclone powder recovery system includes a cyclone separator and an after-filter unit

The first recovery stage is cyclone system, when air stream suspended with high volume of powder overspray passes through the cyclone,  powder particulates will be effectively separated from air stream. Thus, most powders will be captured and recycled.

Afterwards, the second recovery stage- cartridge filter unit, will capture the ultra-fine powder particulates which can not be collected by cyclone, these powders are often wasted.

Cyclone Recovery System Working Principle

Cyclone separator is clarified as two types, Mono-cyclone and Multi-cyclone. Mono cyclone features higher efficiency but requires your factory height more than 5 meters. No matter which cylone you choose, an after-filter unit stage is matching.

Mono-cyclone Powder Coating Booth

Multi-cyclone Powder Coating Booth

How does the first recovery stage- cyclone system work?

The cyclone equipment uses centrifugal force and gravity to separate particulates from sir stream according to their relative density.  

When the high-speed air stream passes through the upper cylindrical portion of the reverse-tapered separator, the air stream rotates at a high speed inside the cylinder while centrifugal force is generated inside the inverted cone, and this centrifugal force separates the heavy powder coating powders. 

The heavy powders drop down and deposited into a collection tray of the cone and recovered.  Light powders(ultra-fine particulates) are carried away with the air flow, which will be transported to the after-filter unit. 

Cyclone device achieves a recovery of up to 95% for powder particle size over 15um.

How does the secondary recovery stage - filter cartridge unit work?

Ultra-fine powder particulates will not drop down into the cyclone bottom, and these powders are often unqualified for recycling which must be collected or will causes air pollution if vented.

The stage containes a group of high-precision cartridge filters that is capable of capturing approximately 99 percent of powder that passes through them.

Particulates that accumulate on the filter will be periodically released thanks to pulse air jets controlled by solenoid valves

Cartridge filters are fitted with "Rotary-Wing" system inside, which increases cleaning efficiency of surface area and ensures long-term performance of the filters.

How to choose a powder coating booth with recovery system?

1) If you want to build big scale automatic production line and has many powder colors to change, cyclone separator + after filter unit is your initial choice.

Cyclone delivers the industries the most flexible color changing operation due to the superior efficiency of overspray collection. It will greatly reduce your downtime and increase powder reclaim efficiency. Then you can choose an automatic cyclone powder coating booth.

2) If you want to build a big scale automatic production line but only have one color, automatic powder coating booth with filter recovery system is your economical choice. Comparing with cyclone spray booth, filter type spray booth requires much lower budget but ensures powder recovery efficiency.

3) If you have very small production and manual system is enough, you can choose manual type powder coating booth with quick-release type cartridge filters, Changing color just change the filters. 

COLO supply powder coating booths, powder recovery system, powder coating equipment, powder coating ovens and complete systems, please contact with us if any demands!