Double-chamber steam sterilisation
An industrial-scale system for infectious medical waste. A double-chamber configuration brings loading, shredding, steam treatment and discharge into a controlled process.
Discuss this system01The system in detail
The G67 is presented as an industrial-scale system for infectious medical waste. Its redundant double-chamber configuration is designed for continuous 24/7 operation. The treatment follows six phases, bringing together automated loading, shredding, transfer, steam sterilisation, drying and discharge.
The process controls both the movement of the material and the conditions in which it is treated. Loading takes place by conveyor, shredded waste is transferred through a sealed screw conveyor, and air extracted during the initial vacuum stage passes through HEPA H14 filters. The cycle is documented through automatic PLC reporting.
Configuration
The main elements of the system, from its treatment method to its controls and output.
02How it works
Follow the material, from loading to treated output.
Waste boxes enter the system on a conveyor. The industrial shredder homogenises the material under slight vacuum, limiting the escape of odours and pathogens. The original description presents automated loading as a way to avoid direct operator contact with infectious material.
Once shredded, the waste moves into the sterilisation chambers through a sealed screw conveyor. This connects the mechanical preparation stage with steam treatment, moving the material between the two parts of the system inside the sealed transfer mechanism.
Air is removed from the chamber before steam is introduced. This prepares the material for contact with steam during sterilisation. The extracted air passes through medical-grade HEPA H14 filters, making air handling part of the treatment sequence.
Pressurised steam is introduced at temperatures up to 142 °C. Internal shafts rotate to mix the material and support uniform heat exchange. Steam treatment follows the initial vacuum stage and precedes depressurisation and drying.
After sterilisation, depressurisation and pulsed vacuum cool the treated material. This stage reduces its moisture content and weight, preparing it for the final discharge phase. Drying is described as part of the G67 cycle itself.
The treated, unrecognisable waste is discharged into collection bags. The original process description mentions disposal or energy recovery as subsequent destinations. Automatic PLC reporting documents the cycle, and GENCO states that waste is not discharged without sterilisation.
03Why this process
The conveyor brings waste containers to the shredder, while a sealed screw conveyor moves shredded material into the sterilisation chambers. The original description presents this arrangement as a way to avoid direct operator contact with infectious material during loading and transfer.
Initial vacuum removes air before the steam stage; the extracted air is filtered through HEPA H14 filters. Inside the chambers, rotating mixing shafts support uniform heat exchange with pressurised steam at temperatures up to 142 °C.
Automatic PLC reporting is described as a means of validating each cycle. GENCO also states that non-sterilised waste is not discharged. These are system features described in the product information; the specific reporting and validation documentation can be discussed with the team.
The G67 description includes an integrated energy recovery system that uses waste heat to serve other facilities. This connects treatment with the potential reuse of process heat. The way it is integrated with other users is part of the technical assessment for the project.
04The treated material
After steam sterilisation, depressurisation and pulsed vacuum cool the material and reduce its moisture content and weight. The final phase discharges the treated, unrecognisable waste into collection bags. Drying and discharge are therefore part of the process sequence, rather than separate handling steps described outside the system.
The original process description mentions disposal or energy recovery as subsequent destinations for the output. It does not describe every treated material as recyclable. The intended destination should be discussed alongside the waste stream and the way the installation will operate.
05Product information
Figures and statements published on the original GENCO site. Confirm test conditions, applicable waste streams and project requirements with the team.
06Questions about G67
Useful answers before discussing your project.
The G33 is described for hospitals, clinics and laboratories, with integrated shredding and sterilisation. The G67 is presented as an industrial-scale, double-chamber system with a six-phase process, HEPA H14 filtration and PLC reporting. Selecting a system requires a discussion of the waste stream and operating requirements, not simply a comparison of model names.
The initial vacuum removes air from the chamber so that steam can reach the surfaces of the material during sterilisation. The extracted air passes through HEPA H14 filters. This stage follows transfer of the shredded waste and precedes the injection of pressurised steam.
The original description quotes up to 1,200 kg/hour, 12 tonnes/day and continuous 24/7 operation without specifying the operating hours or load conditions behind the capacity figures. These values should not be combined into a guaranteed daily output. Ask GENCO to define capacity against the material, quantity and working schedule of the project.
They describe different aspects of the treatment. Shredding changes the physical form of the waste. The G67 energy recovery system uses residual process heat. Separately, the process description mentions energy recovery as a possible destination for treated output. These two uses of energy recovery should be assessed separately for the project.
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