Device for electrochemical removal of heat stable salts in desulfurated amine liquid

Abstract

This invention relates to the thermally-stabilized salt electrochemical removing device in desulfurizing thiamines liquid. This invention provides an electric dialysis-ion-exchange electrochemical device which only uses electrolytic water; this invention can remove thermally-stabilized salt in desulfurizing thiamines liquid to make the thiamines liquid rebirth. This invention is arranged with anode room, cathode room, iron exchange room and constant-current source, wherein the space between the anode room and iron exchange room is nipped with highly basic anode iron exchange resin film, and the space between the iron exchange room and anode room is also nipped with highly basic anode iron exchange resin film, and the iron exchanged room is filled with highly basic anode iron exchange resin film, the anode room and cathode room are installed with anode and cathode respectively, and both the cathode and anode are corroding-resistance metal electrode with multi-holes, the cathode and anode connect with the constant-current source, the cathode room is arranged with water inlet and waste liquid outlet; the anode room is also arranged with water inlet and waster liquid outlet; the iron exchange room is arranged with thiamines liquid inlet and outlet.

Description

technical field [0001] The invention relates to an electrochemical device, in particular to an electrochemical device used for removing heat stable salt in desulfurization amine liquid. Background technique [0002] The use of amine liquid desulfurization is a common method in the oil and gas industry. The generation and accumulation of Heat Stable Salt (HSS) in the desulfurization process of the amine liquid due to degradation and other reasons, which in turn causes the foaming of the amine liquid, the decrease of the desulfurization efficiency of the amine liquid, the shortening of the life of the filter and the corrosion of equipment, etc. Serious consequences, resulting in major economic losses. [0003] At the Laurance Reid Gas Conditioning Conference Daria Jouravleva, Peter Davy proposed the use of ion exchange to remove heat stable salts in amine liquid (referred to as the Amipure method, Daria Jouravleva, Peter Davy. Impact of Continuous Removal of Heat Stable Salts...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of using a large amount of chemical reagents, causing secondary pollution, and re-oxidative degradation when removing the heat-stable salt of desulfurization amine liquid by ion exchange, and providing a method that only uses electrolyzed water and does not require other chemical reagents. Electrodialysis-ion exchange electrochemical device, which can continuously remove the thermally stable salt in the desulfurization amine solution, so that the amine solution can be continuously regenerated

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