Carbon + Catalytic Desorption (CO)
Batch-regenerating carbon beds with catalytic burner — the cost-effective standard for intermittent coating and printing lines.
VOC Abatement Systems: Concentrate, Then Destroy
For organic exhaust that carbon change-outs can't economically handle, JHF builds destruction-based trains: activated carbon or zeolite concentration upstream, catalytic oxidation downstream. Big, dilute airflows become a small, rich stream that burns cleanly over catalyst at ~300–400 °C — with heat recovered to keep running costs low.
We fabricate the adsorption housings, PP pre-treatment and duct in our own workshop, integrate burners, catalyst and controls, and commission with your team remotely or on site.
- Catalytic oxidizer (CO) + carbon adsorption/desorption combination units
- Zeolite rotor concentrators for continuous high-volume, low-concentration exhaust
- UV photolysis, low-temperature plasma and dry filter units for odor and light duty
- PP pre-scrubbing for humid or particle-laden streams ahead of concentration
- PLC control with touch panel, temperature safety chain and remote support
Technical data
Typical System Envelope
| Airflow range | 2,000 – 100,000 m³/h (rotor systems at the high end) |
| Suitable VOCs | Toluene, xylene, benzene series, esters, ketones, alcohols — mixed solvent exhaust from coating, printing, chemical and electronics plants |
| Destruction efficiency | Typically 95–99% VOC destruction across the concentration + oxidation train at design load; verified against your local discharge standard |
| Concentration stage | Activated carbon beds with hot-air desorption cycles, or continuously rotating zeolite wheel (concentration ratio 10–25×) |
| Oxidation stage | Catalytic combustion at ~300–400 °C over noble-metal honeycomb catalyst; electric or gas start-up heating; autothermal above ~1 g/m³ concentrated stream |
| Heat recovery | Plate or shell heat exchanger preheating desorption/inlet air |
| Safety chain | LEL monitoring option, dilution interlocks, temperature limits, flame arrestors, emergency bypass to stack |
| Pre-treatment | PP scrubber / dry filter box for humidity, dust and paint mist — fabricated in-house |
| Controls | PLC + HMI touch panel, English interface, remote diagnostics via 4G/Ethernet |
Every proposal includes a process flow diagram, mass balance and operating-cost estimate for your utility prices.
Technologies
Pick by Concentration and Duty Cycle
Zeolite Rotor Concentrator
Continuous 24/7 lines with big airflow and low concentration — rotor concentrates 10–25× into a small oxidizer.
Pre-Treatment for RTO/CO
PP quench and scrubbing towers, dry filter boxes and demisters protecting any oxidizer — ours or one you already own.
UV Photolysis Units
Compact inline units for odor and light organic duty at restaurants, plants and pump stations.
Low-Temperature Plasma
Electrode-based oxidation for odors and specific streams where media replacement is impractical.
Hybrid Trains
Scrubber + carbon, plasma + carbon, rotor + CO — combinations engineered to hit your stack limit at the lowest lifetime cost.
Straight answers
Which VOC Technology Should You Buy?
Honest sizing beats fashionable acronyms. The decision is mostly concentration × operating hours:
- Low load, intermittent (small workshops, odor duty): plain carbon adsorber or UV unit — lowest capex, media is the running cost.
- Medium load, shift work (coating, printing, gluing): carbon beds + catalytic desorption unit — carbon regenerates in place, solvent is destroyed, running cost drops sharply.
- High airflow, continuous (auto plants, packaging, electronics): zeolite rotor + catalytic/thermal oxidizer — built for 24/7 with heat recovery.
- Humid, corrosive or dusty exhaust: add PP scrubbing/filter pre-treatment — this is where our in-house PP fabrication saves the catalyst downstream.
Send your stack test or solvent purchase records and we will model the options with payback periods — sometimes the honest answer is the cheaper technology.
FAQ
VOC System Questions
What running cost should I expect?
Above roughly 1 g/m³ in the concentrated stream, catalytic oxidation runs near-autothermally — electricity for fans and rotor drive dominates. Our proposal includes a kWh/gas estimate at your utility prices so you can compare technologies on lifetime cost.
Can you work with my local emission standard?
Yes. Tell us the limit values (mg/m³ or kg/h) your permit demands and we design to them; the guarantee in the contract references your standard, not a generic number.
How is such a system shipped and installed?
Skids are pre-piped and pre-wired in the factory, shipped in containers, and reassembled by your contractor with our supervision — remote video or an engineer on site. Commissioning typically takes days, not weeks.
My exhaust is humid and has paint mist — is that a problem?
Untreated, yes — mist blinds carbon and rotors. That is why our trains start with PP scrubbers or dry filter boxes we fabricate ourselves; the concentrator only sees clean, dry air.
Get it engineered
Send a Stack Test or Solvent List — Get a Real Proposal
Airflow, solvents and operating hours are enough to start. You receive a process flow diagram, efficiency and energy estimate, and a factory price within 2–3 working days for full systems.
WhatsApp +86 186 1558 6932 · sales@jhf2017.com
Mass balance with every proposalEnglish PLC interfaceRemote commissioning support