| CPC F24F 11/32 (2018.01) [F24F 2110/65 (2018.01)] | 11 Claims |
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1. A safety system, under the control of an operator, used for venting toxic or hazardous gas and vapors from a work space, the safety system comprising:
a control system, programmed by a computer, the control system including a control panel, a human machine interface (HMI), a gas detector, and an alarm, the HMI adapted for use by the operator and for operating the safety system, the gas detector used for detecting gas and vapors in the work space and connected to the alarm for actuating the alarm when the gas and vapors are present in the work space;
an extraction system for extracting oils from oil based plants, the extraction system comprising a mechanical solvent recovery system and attached to and under the control of the control system; and
a ventilation system, the ventilation system attached to and under the control of the control system, the ventilation system used for venting the gas and vapors from the work space which are released from the solvent recovery system, the ventilation system programmed to automatically vent the work space when the gas and vapors are released from the solvent recovery system and when a gas and vapor level reaches a selected air level not to exceed 25% of a Lower Explosive Limit (LEL), as indicated by the gas detector;
whereby, during the operation of the safety system, the ventilation system is turned “on” and the alarm is turned “on” and will remain “on” until the gas detector reads a value less than 5% of the LEL and electrical interlocks in the safety system remain “off” until the gas detector reads a value less than 5% of the LEL; and wherein
the extraction system is programmed through the control system to prevent at least one of a plurality of vessels of the extraction system from being opened before a desired volume of solvent is recovered in the solvent recovery system.
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