Compressed Natural Gas Storage Tank

Compressed natural gas storage tanks commonly called cng these tanks house methane stored at high pressure typically used in place of petroleum diesel fuel or propane.

Compressed natural gas storage tank.

Perhaps the most rapidly growing application however involves the use of compressed natural gas cng natural gas that is compressed to less than 1 of the volume it occupies at standard atmospheric pressure as a fuel for private automobiles and fleet vehicles i e vehicles that log high daily mileage such as buses garbage trucks taxis and airport shuttles. The capacity of each spherical vessel is 12 360 scf at 5 500 psi or 11 130 scf at 4 500 psi. You could in principle store methane in a tank in the gas state but methane has such low density in the gas state that you could not store a usable amount. Hazards associated with compressed gases include oxygen displacement fires explosions and toxic gas exposures as well as the physical hazards associated with high pressure systems.

Once the tank is safely purged of any natural gas the expired cng tank must be rendered unusable and discarded. Cng tanks come in 4 types. Studies have shown an increase from 20 35 more cng in the same package envelope. Special storage use and handling precautions are necessary in order to control these hazards.

The physical properties of natural gas itself and the cng fuel system that is designed and built according to stringent quality standards. Vertical cng storage tanks hanson pressure tanks finished projects mb 685 b 2400 gallon carbon steel cng tank 640 psig asme section viii div 1. The cylinder service pressure is rated at 3 600 psig with a 20 year service life. Cng tanks cenergy solutions cylinders are usdot fmvss 304 and ngv 2 compliant certified and tested to the highest standards.

The conformable tank stores high pressure compressed natural gas in the same place on a vehicle where gasoline is stored today yet still has enough gas to meet the desired driving range of the vehicle. Compressed natural gas is very safe due to two important factors. The vessel can supply cng at up to 5 500 psi to a fill up nozzle. Many customers prefer cng because its combustion produces fewer undesirable gases than other traditional fuels.

See the compressed natural gas fuel tank defueling decommissioning and disposal video or csa exp 2 1 defueling decommissioning and disposal of compressed natural gas vehicle fuel containers best practices document for more. Our cng tanks are usdot fmvss 304 and ngv 2 compliant certified and tested to the highest standards. For storage and cascades we have asme certified cylinders higher service pressures up to 5 000 psig and dot cylinders at 4 350 psig. The non cylindrical tank is called a conformable tank.