Vent Gas Condensation
Why Cryogenic Condensation
The importance of cryogenic condensation in the management of gaseous pollutants
In chemical and pharmaceutical plants, gaseous emissions contain volatile organic and inorganic compounds that must be abated to comply with statutory limits.
SIAD supports its customers by offering an integrated Freeze-Flo cryogenic condensation system, which utilises the cryogenic temperature of liquid nitrogen and employs bespoke design to separate pollutants from gaseous effluents, recover solvents and, where appropriate, reintroduce them into production processes.
Recovery
Recovery of solvents that can be reused in the process
Compliance
Compliance with statutory emission limits
Efficiency
Increased efficiency on purchased gas
Environmental protection
Environmental protection, cost reduction
SIAD supports its customers in processes with the greatest environmental impact, delivering results in terms of cost reduction, increased productivity and environmental protection. Cryogenic condensation is one of SIAD’s key technologies for process sustainability, both for new, bespoke plants and for industrial retrofitting projects.
24/7 automated systems
24/7 automated systems
Freeze-Flo systems are made of stainless steel, skid-mounted and comply with the requirements of the chemical and pharmaceutical industries. Flow rates, pressures and temperatures are controlled automatically by a control panel, which ensures the system operates autonomously.
Comprehensive management
Comprehensive management, from supply to the point of use
Platinum is the Total Gas Management service that entrusts SIAD with the full logistics, maintenance and operational management of gases and plant. It includes remote monitoring of the cryogenic tank, automatic reordering, maintenance of distribution lines, periodic technical inspections, and technical and regulatory consultancy.
Products and services for Vent Gas Condensation
SIAD offers a comprehensive range of solutions for the cryogenic treatment of gaseous emissions, from the Freeze-Flo system to integration with activated carbon. The choice of configuration depends on the type of pollutant, the flow rate to be treated and the customer’s objective, ranging from simple abatement to the recovery of solvents that can be reintroduced into the process.
Freeze-Flo, SIAD’s cryogenic condensation process
The Freeze-Flo system uses liquid nitrogen as an energy carrier to cool the contaminated effluent to cryogenic temperatures. The pollutants are separated through a physical separation process, as the compounds are removed from the gas phase by condensation. It treats chlorinated solvents, ketones, alcohols, methylene chloride (DCM), acetone, ethyl acetate, methanol, toluene, MEK, cyclohexane and n-hexane.
Modular systems, offering full functional autonomy
Liquid nitrogen flows through the tube, whilst the gaseous effluent flows around the outside of the jacket pipes, promoting contact cooling and thereby recovering the condensed phase into a dedicated tank at the bottom of the column. Flow rates, pressures and temperatures are automatically controlled by an electrical control panel, ensuring the process operates completely autonomously.
Integration with activated carbon and in-situ regeneration
The Freeze-Flo column can be installed upstream of granular activated carbon (GAC) filters to reduce the frequency of regeneration and the associated costs, or used as a regeneration system: a stream of hot nitrogen gas desorbs the VOCs adsorbed onto the carbon and sends them to the cryocondenser for recovery. The nitrogen gas used in the process can also be reused for protection and inerting operations in other parts of the plant.
Contact us
Do you carry out work involving processes that generate solvent emissions?
Speak to one of our experts, who will help you select the Freeze-Flo system and liquid nitrogen supply best suited to your process, from reducing emissions to recovering reusable solvents.
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