An important aspect of the design of a gas compressor is the mechanical seal. A mechanical seal minimizes or eliminates the leakage of gas at the interface between a rotating shaft and the stationary housing. Tip #1: Choose the Correct Materials Choose the correct materials of construction for the application. The materials selected must endure the temperature extremes, pressure differentials and be tolerant of the corrosive process gases of the specific gas compressor application. Additionally, the sealing face materials must have proper resistance to friction, frictional heat and resistance to wear. One of various grades of mechanical carbon are often chosen for the sealing faces Tip #2: Consider the Form of Lubrication All friction mechanical seals require some form of lubrication to lubricate, cool and help seal the gases in the gas compressor. Pre-lubing the seal faces and seal cavities will best protect the components during start up and the first moments of operation. Waiting for the lube system to get lubricant to all areas of the seal after start up can have a detrimental effect on the seal's longevity. Tip #3: Check the Spring System The sealing faces of a mechanical seal are pushed together by some form of spring system. Before assembling the seal onto the shaft, confirm that the spring system is freely working, and not hung up, by pressing gently against the primary ring assembly, taking caution to avoid direct contact of the sealing surface with your hand. Tip #4: Make Sure to Install Your Mechanical Seal Correctly This tip is specific to Ro-Flo’s Single Face Mechanical Seal. Specifically, installing the seal onto the sliding vane compressor. Refer to the diagram below for the specific component names. The first step of the installation is sliding the mating ring into place. Due to the o-ring on [...]
There is certainly a lot of talk about renewable natural gas and the important role it currently plays in the U.S. energy sector and even more discussion about its use in the coming decades. Let’s take a closer look at the most common renewable natural gas sources and the positive effect it has on decreasing emissions. […]
Gas compressors used in various industries, from oil and gas tank vapor control to biogas methane capture, require capacity control to handle the variability in gas production. This article will provide a brief overview on methods of controlling positive displacement compressor capacity. […]
One misunderstood aspect of a Ro-Flo rotary vane compressor is the integral cooling system. When looking at the compression system as a whole, the cooling system temperature is sometimes adjusted to help control the process gas temperature.
Rotary vane compressors are known for their ability to handle saturated and corrosive gases. Their durability in tough environments is why they are commonly chosen for vapor recovery, flare gas and various industrial process gas applications.
When the discharge pressure needed for an application cannot be reached with a single stage gas compressor, a two stage gas compressor is needed. While a two stage gas compressor is more expensive, more complicated to operate, and requires additional equipment, there’s simply no other way to reach a higher discharge pressure if a single stage gas compressor isn’t cutting it.
Compressor testing can be utilized to validate expected performance, analyze product developments, determine baseline data in a controlled environment, troubleshoot unexpected or undesirable operation and much more.
Sour gas is any gas containing significant amounts, typically above 20ppm, of hydrogen sulfide (H2S). H2S is a colorless gas that is heavier than air and harmful to humans at concentrations of 20 ppm in air.
Biogas is a natural energy source made from the decomposition of biological matter. More simply put, when food, animal waste, plants, sewage, and other natural waste is broken down by bacteria, a gas is formed that includes methane.