Water absorbents

WATER ABSORBENTS for the pipelines (EN: pipeline water absorbers; DE: Rohrwasserabsorber; FR: absorbeurs d'eau dans les conduites; ES: absorbentes de agua en las tuberias; RU: водопоглотители) are the substances, which are purposed for the removal of the water vapours from the hydrocarbon gases (of the natural and petroleum types), which are transported through the gas pipelines; the water absorbents prevent the forming of the hydrates of the hydrocarbon gases within the pipelines.

As the water absorbents, they use the ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, methanol, calcium chloride (it is used in the form of the 30% aqueous solution); these substances are delivered into the pipeline using the dosing pump. The most widespread water absorbent is the methanol. They use the remaining water absorbents, except the calcium chloride, because of the relatively high cost, mostly for the drying of the natural gas at the installations of the high performance (20-100 million cubic metres per day). The usage of the solutions of the calcium chloride is limited, in association with the corrosion of the pipelines and productive equipment, which is caused by these solutions.