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1-800-468-3826 |
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| Direct Condensation to Liquid Refrigeration Systems |
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Recover 99% or greater of most solvent or hydrocarbon vapors. |
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Low operating costs, low maintenance, low pressure drop, and completely automatic PLC designs. |
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All units are custom designed to meet electrical, emission, mechanical, and available space requirements |
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Systems are factory packaged, skid mounted, operationally tested, and arrive ready to install |
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Examples of recovered vapors include: ketones, aromatics, ethers, chlorinated hydrocarbons, monomers, alcohols, esters, and fuel type hydrocarbons. |
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Over 700 systems in operation world-wide, with units in operation 25+years |
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| How Vapor Recovery Units Work |
In a vapor recovery system, vapor enters either a single or multiple condenser system. Mechanical or cryogenic refrigeration fluids are used directly in tubes or are used to cool a heat transfer fluid. This fluid is circulated through the tubes to provide cooling for the condensers.
Multiple condensers are frequently used when there are components in the vapor that would freeze on the lower temperature coils. They are also used when a significant portion of the cooling load can be shifted to a lower cost, single compressor refrigeration system.
Edwards Engineering's spaced fin uniquely handles components that must be cooled to below freezing point in order to meet emission requirements. At periodic intervals, warm heat transfer fluid and/or process air is circulated to melt the accumulated frost. No shut down for defrosting is required when dual coil defrost systems are specified
At one time, vapors that are potentially harmful to the environment or to human health were simply allowed to escape into the atmosphere. As the hazards of these emissions became more evident, the use of closed systems of pipes, valves, compressors, and other components became more prevalent. In most systems, those vapors are compressed to a liquid and returned to their original source. This is often done, at filling stations, in order to reduce noxious and potentially explosive fumes and pollution. Not only is the environment protected, but the reuse of costly chemicals are possible.
Chemical and petroleum vapors can be re-condensed into a usable liquid using direct condensation. Edwards Vapor Recovery Systems provide a complete packaged solution to your emissions requirements. The patented refrigeration system brings a specially designed series of coils to progressively lower temperatures. As the temperature decreases the chemicals in the vapor stream condense onto the coil surface. Temperatures may reach as low as -180ºF. |
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Benefits of Edwards Vapor Recovery Systems |
| Simplicity |
Simplicity- Vapors piped directly into the condensing chamber are recovered as liquid as liquid condensate without compression, regeneration or by-products |
| Cleanliness |
Cleanliness - Liquid condensation occurs directly on cold metal surfaces and drips into a collecting chamber with no addition of contaminants. |
| Safety |
Safety - The condensation process is continuous, completely safe, and usually occurs at temperatures far below the flash point. Units are not LEL/UEL limited |
| Economy |
Economy- Low capital and installation costs. Low maintenance and operating costs. Repaid pay-back from recovered liquid. |
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Standard Features and Available Options Make
Edwards Vapor Recovery Systems the Leading Choice. |
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| Low Operating Costs/Energy Savings |
Edwards, vapor recovery packages feature LOW energy consumption per volume of liquid recovered. Units are designed to recover sensible cooling from the effluent stream. Heat rejected from compressors can be used
for defrosting. |
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| Recovered Condensate is Reusable |
| Simple piping can be used to return the recovered condensate to any convenient location. Condensed water vapor also can be separated from water immiscible solvents and piped to other locations. |
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| Low Maintenance/Long Life |
| The basic refrigeration system follow conventional circuit design, is easy to maintain, and lasts indefinitely. |
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| Record of Liquid Recovery |
| An optional reading indicator provides cumulative record of the recovered condensate. |
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| Full Automatic Operation |
| A single panel controls operation from inside the unit,
so full-time attendance is not required. Remote operation is available. |
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| Factory Packaged |
| Units are delivered directly to the job-site, factory packaged, skid mounted, and performance tested. |
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| Walk-in Enclosure |
| The refrigeration equipment is located in a walk-in enclosure, providing ample room for operation, maintenance, and service. |
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| 0-100% Overload Capacity |
| In a refrigeration based unit, the suction pressure of the compressors automatically rises with the load and results in a 0 to 100% of design operating range. |
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| Dual Condensing Coils Available |
| This option eliminates the need to shutdown equipment for defrosting where a continuous production, loading, or processing operation is desired. |
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| Warranty |
| Limited warranty available on all units. Extended service plan available. |
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