Human Crematory Equipment Comparison

The number of cremations per day is the fundamental basis of design for the three classes of crematories. As heat thoroughly saturates the firebrick linings, combustion control requirements change. Cremation burning rates increase with saturated temperatures, and thus a more sophisticated control system is required for higher volume retorts.

Basic Batch Report:

The model ISI-H2 is designed for smaller applications that cremate up to 3-4 bodies per day. Usually when a cremation company reaches 500 cremations per year, they will add a second retort to reduce the total hours of operation and to create redundancy for maintenance purposes. The operating cycle is a 45 minute preheat from a cold start, approximately an 90-120 minute cremation cycle (depending on the size of the body), and a minimum 60-minute cool down. The 2nd and 3rd cremations would require a shorter preheat.

The model ISI-H2 is a “hot hearth” design, has a 1-second retention time in the afterburner chamber, is timer controlled, and fully modulates fuel and combustion air for both burner chambers based on temperature requirements. There is no visible smoke or odor when operated according to instructions.

Intermediate Batch Report:

The model FT-I is designed for applications that cremate up to 6 bodies per day, or for facilities that want to utilize the upgraded PLC control. One model FT-I will cremate 5-6 bodies per day comfortably in a 10-12 hour time period. The principle difference is the temperature and combustion control system. It also incorporates draft control to account for the variations created by saturated temperatures. The system is computer controlled and can be remotely monitored, via a modem, for easy maintenance/troubleshooting diagnosis.

The operating cycle is similar to the model ISI-H2. The FT-I is a “hot hearth” design with a 1-second retention time in the afterburner chamber. Each chamber is individually controlled and fully modulating, integrating all control parameters. There is no visible smoke or odor when operated according to instructions.

Continuous High Volume Retorts:

The models FT-II and FT-III are designed for high volume applications that are cremating 7+ bodies per day and are capable of operating 24 hours/day. Since the FT-II and FT-III are loaded and cleaned out hot, they are extremely fuel efficient. Both of these will do the work of multiple other retorts and save you fuel, electric and labor at the same time.

The FT-II and FT-III are “hot hearth” designs and incorporate a 2-second retention time afterburner. The difference between the two models is the FT-III has a wider load door to accommodate larger coffins. Each chamber is individually and dynamically controlled based on time, temperature, oxygen, and draft. The PLC control records all the key operating parameters, saving them on a hard drive, and can be remotely monitored for maintenance and diagnosis.

A typical cremation cycle takes 70 minutes. When operating continuously, there is no need for cool down or preheat. Fuel efficiency is optimized. Another nice safety feature is that there is no need to reposition the body during the cremation.

Automation can be incorporated into the design including: automatic loading, remains processing, custom data logging and even inventory retrieval. This system is our most fuel efficient and does not produce any visible emissions or odor when operated in accord with instructions.