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Industrial vapor recovery and air pollution control equipment background

Linfen Kitchen Waste Pretreatment Room – Odor Control (LTP)

Linfen Kitchen Waste Pretreatment Room – Odor Control (LTP) process flow

Project Overview

County-scale kitchen waste treatment site processing 40 t/d. Odor area: receiving bay and crushing/sorting room. Design air volume: 7,800 m3/h.

Odor Components

Mercaptans, organic acids, mixed VOCs, with traces of oil mist droplets

Operating Challenges

Exhaust contains oil mist; direct entry into the plasma unit would coke the electrodes and create a safety hazard.

Treatment Process

Negative-pressure sealed collection → scrubber tower for oil removal and dehumidifying → low-temperature plasma deodorizer → activated carbon adsorber

Main Equipment

Explosion-proof induced draft fan, oil-removal scrubber tower, low-temperature plasma unit, activated carbon adsorber

Treatment Results

Kitchen-waste sour/rotten odor effectively treated; equipment shows no frequent scaling or clogging.

Operating Cost

0.50–0.59 CNY / 1,000 m3 of exhaust gas

Technical Highlights

Mandatory design rule: upstream spray removes oil mist to guarantee long-term stable plasma operation – the project’s safety design red line.

This project uses a Low-Temperature Plasma combined process. Learn more about the technology on our Low-Temperature Plasma equipment page. For a similar design, contact us at s18301170098@gmail.com / WhatsApp +86 19833770783.

Engineering Approach

Odor-control retrofits begin with capture: hoods and duct routing are arranged so the fan sees the lowest practical excess air, then the treatment stage – low-temperature plasma or microwave-UV – is sized against the measured or estimated pollutant spectrum and the intermittent profile of generation.

System Composition

A standard package comprises pretreatment (demisting/filtration where humidity or droplets are present), the oxidation stage with multiple modular trains, induced-draft fan, stack, and a control cabinet with interlocked start-up so the treatment unit always runs before the extraction fan ramps.

After-Sales

Modularity keeps maintenance predictable: individual trains isolate electrically for service without stopping the line. Consumables are limited to filters and periodic lamp/electrode inspection – both items stocked for quick dispatch.