It is widely recognized as a safe and commercially-viable alternative to open-air DIY extraction operations. In a nutshell, closed-loop extraction is a continuous extraction process that encloses solvent and flower in an automated, efficient loop. Other relevant approval organizations include the International Fire Code.

Commercial extractors must ensure their equipment is certified by an engineering organization, such as the American Society of Mechanical Engineers. The main downside of closed-loop extraction equipment is cost. Nonetheless, autonomous feedback mechanisms and the circular process of material recycling for new input are what define a closed-loop control system. Enclosing toxic, flammable solvents is much safer compared to open-air extraction. In all cases, closed-loop extraction involves feedback loops, whether mechanical, electronic, or chemical, to contain and determine product characteristics.Ĭlosed-loop extraction is often colloquially explained as ‘it does not touch air’ (it is closed) and ‘the solvent loops around’ (the loop). Precision Extraction supplies equipment compatible with either hydrocarbon or ethanol solvents systems process raw material within certain timeframes and for a certain number of runs per solvent batch. MRX Xtractors offers supercritical CO 2 closed-loop extraction with bi-directional pressure and temperature correction, meaning the system automatically adjusts these variables to desired output parameters (i.e., THC, CBD, and terpenes). It is a circular, enclosed, largely automated process.įor example, the patent for the closed-loop extraction of ExtractionTek describes a proto-typical hydrocarbon system: hydrocarbon containers provide solvent a recycling pump transports solvent into flower solvent recycles while extracted oils separate and thermal jackets control the condensation and evaporation of the solvent. Solvent and flower material are literally enclosed and protected from the environment further, solvent is re-circulated for continued use in the system. Closed-loop extraction systems automate time, pressure, and temperature based on solvent (input) and product (output). This is a linear process sometimes referred to as ‘ open blasting.’Ĭommercial extractors, on the other hand, almost always use (as required by law) closed-loop systems. In the cannabis space, open-loop systems can be found in DIY operations such as Rick Simpson Oil, where manufacturers manually soak dried flower in ethanol or another solvent for a certain amount of time, then evaporates the solvent. Closed-loop systems allow precise control and stability they are also associated with waste containment and material/energy recovery. But an automatic iron is a closed-loop because sensory feedback signals cessation of input (the iron stops heating) when the output (the heat) reaches the desired temperature. To clarify, a household toaster is an open-loop system because we push a button and it heats for a certain arbitrary time and temperature.

Closed-loop systems utilize automated feedback, and they are a popular, if not necessary, option for cannabis extractors. Open-loop, on the other hand, is a system where output does not affect input. It takes about 33.32 MJ to extract 1 m 3 of Crude Oil, assuming it is extracted from both Oil nodes and Resource Wells.Closed-loop refers to a control system where output affects input (and vice versa) in order to modulate system behavior.

This means the following amount of Crude Oil is available:īy combining the output of both methods, the max extraction rate is 11700 m 3/min. The default extraction rates are as follows: This leads to the following total availability on the map:Ĭrude Oil can also be extracted from Resource Wells using Resource Well Extractors, which spread over 2 clusters. Crude Oil can be extracted from Crude Oil resource nodes using Oil Extractors.

Closed loop extractor