SEPARATION AND PURIFICATION : COMBINED PLANTS

COMBINED PLANTS 2018-10-02T16:03:41+00:00

GPE also offers combined process plants including absorption, condensation, sacrificial adsorption, temperature swing adsorption, pressure swing adsorption and distillation. These packages are custom built based on the application, composition of input gases, output parameters required, capital and operating costs etc. Some examples are provided here.

Biogas up-gradation plant

This combined process package is used for the removal of hydrogen sulphide, carbon dioxide and other impurities from biogas. The biogas is first fed into a caustic wash tower, where the bulk of the hydrogen sulphide is chemically converted using caustic soda. The biogas is then compressed and passed through a specially processed adsorbent to remove the balance hydrogen sulphide, down to less than 5 ppm. Then the compressed gas is fed into a methane PSA to produce 99% pure methane, where the other impurities are removed. This package described here for biogas up-gradation can also be used for landfill gas and coal bed methane.

Coke oven gas cleaning plant

This combined process package is used for the removal of tar, naphthalene, ammonia and hydrogen sulphide from coke-oven gas. From the cleaned gas, a stream is taken out to produce hydrogen for batch annealing furnace. The coke oven gas is first fed into a caustic wash tower, where the bulk of the hydrogen sulphide is chemically converted using caustic soda. The gas then passes through adsorbent beds, wherein tar and naphthalene are removed. The gas is then passed through a specially processed adsorbent to remove the balance hydrogen sulphide, down to less than 5 ppm.

The process gas is then compressed and fed to a hydrogen PSA to produce 99.99% pure hydrogen. This package is used in steel plants that operate a cold rolling mill and have coke batteries.

For other combined plants please contact us for further details.