Title:
FOURTH CLASS PYRIDINIUM SALT INHIBITOR FOR GAS CONDITIONING SOLUTION
Document Type and Number:
Japanese Patent JPS53119739
Kind Code:
A
Abstract:
Method for establishing a concentration that inhibits the corrosión of iron and steel by carbon dioxide, and optionally by small amounts of hydrogen sulfide, in gas conditioning liquids, characterized by the operations of preparing a quaternary pyridinium salt by reacting a mixture of a pyridine compound with alkyl halide or excess benzyl halide, under heating at 90ºC for two hours, cooling the reaction mixture and recovering the quaternary salt in the form of a viscous solid or liquid precipitate; formulating an inhibitory concentration by mixing one part by weight of the quaternary pyridinium salt obtained with (1) 0.001-10 parts of a thiocompound which is a water soluble thiocyanate, a water soluble sulfide, or an organic thiomide, or (2) 0.01-10 parts of a lower alcohol-polyamine, a corresponding polyalkohylene-polyamine, or a mixture thereof, in which the units of alkoxy contain 2-3 carbon atoms; and adding the inhibiting concentration to the gas conditioning liquid, whereby the resulting gas treatment solution is substantially inhibited against the induction of corrosión in the gas treatment unit. (Machine-translation by Google Translate, not legally binding)
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Inventors:
ROBAATO JIYOOJI ASUPEEJIYAA
ROBAATO CHIYAARUZU KUROOSU
ROBAATO CHIYAARUZU KUROOSU
Application Number:
JP3494978A
Publication Date:
October 19, 1978
Filing Date:
March 28, 1978
Export Citation:
Assignee:
DOW CHEMICAL CO
International Classes:
B01D53/14; B01D53/18; B01D53/40; B01D53/77; C23F11/06; C23F11/10; C23F11/14; (IPC1-7): B01D53/16; C23F11/14