Gas Equipment Company is a leading national and global distributor of Corken products. Proudly offering Corken products for both the LPG and Industrial Gas market segments. Included in our extensive inventory of industrial gas products are Corken reciprocating compressors.
Reciprocating piston compressors provide several advantages and are an efficient solution for high compression and low flow gas transfer applications. Unlike a pump that relies on adequate net positive suction head (NPSH) to effectively suck liquid off the rail car, the compressor compresses product vapor from stationary tanks to push the liquid off the car in a closed loop system, and therefore it is NPSH agnostic. In liquefied gas applications, pumps operate in very low NPSH systems due to the high vapor pressure of the product and the need to lift the product up out of the dip tube in the car, which can lead to cavitation. Although modern pumping technologies can mitigate the effects of cavitation, efficiency is reduced and the pump wears faster. Compressors eliminate the potential for cavitation. The Corken line of LPG and industrial compressors are known for their durability, reliability, and efficient performance in demanding environments.
Corken Compressor in Action
The Corken 891 size compressor allows you to unload up to 500 GPM of liquid out of a single rail car. Using a 4-way valve (Corken 107 mounting), the compressor can also pull the vapor off the car in a process known as vapor recovery. Unlike with a pump, vapor recovery allows you to boil off the liquid heal and capture the vapor left in the car after liquid transfer. Using the Corken compressor for vapor recovery generates a return on investment by unloading more product per rail car and reducing maintenance costs and lost efficiency due to cavitation in pumps. It also offers a more environmentally friendly solution by capturing vapor that would otherwise be flared off down the line.
The picture to the left, shows a Corken compressor in a propane terminal for offloading propane, natural gas, and butane/ butylene (BB) mix. They utilize both liquid lines of the car to achieve approximately 500 GPM of liquid transfer. Using the 891, they can offload the liquid in the car in less than 1 hour. In about 4 hours, they can pull a propane rail car down to 30 psi using vapor recovery. Below 30 PSI in propane applications, the amount of liquid recovered is often not worth the extra power required to reach lower pressures. GEC and Corken can help size the correct compressor and best pressure of vapor recovery to maximize your return on investment for your specific product and application.
In this application, the customer’s compressor and rail rack is rented from them to unload BB mix cars into the pipeline that transects the terminal. In a typical rail offloading situation, the Corken FT891 compresses vapor from the stationary tank to push the liquid off the rail car into the tank. In this instance, the facility does not have a BB mix tank to pull vapor from, so they must use their natural gas vapor to offload the renter’s BB mix. They use the 4-way valve included in the 107 mounting to recover their natural gas vapor. Vapor recovery allows recuperation of vapor from the car and maximizes the amount of product unloaded from the car.
At Gas Equipment Company we understand that reliability and efficiency are vital when it comes to your equipment. Which is why our inventory goes above and beyond to encompass a wide selection of key components for your compressor needs. Whether it's O-rings, packing materials, oil pumps, valves, pistons, or any other essential parts, we have you covered. And in order to minimize downtime and maintain smooth operations, our dedicated Petrochemical and Refined Fuels team is there when you need them. Committed to swiftly meeting your Corken needs, ensuring prompt customer service and efficient delivery.