The invention discloses a diesel oil de-coloring agent as well as a preparation method and a de-coloring process thereof. The de-coloring agent is prepared from sodium silicate, triethanolamine, diethylenetriamine, N, N-di (3-aminopropyl) dodecylamine, p-phenylenediamine, sodium hydroxide and water. The de-coloring agent has a simple preparation process and is used for de-coloring diesel oil, and a used pre-treatment agent is composed of hydrochloric acid and formaldehyde. The diesel oil de-coloring agent disclosed by the invention is simple in preparation process, short in production period and low in cost and is used for de-coloring black diesel oil; a de-coloring reaction has a rapid speed, no pollution and low loss; and after obtained black oil dreg is washed with water, the black oil dreg is conveyed into a hydrogenation device so as to be recycled and refined, and the recovery rate of the diesel oil is 98% or more. The diesel oil de-coloring agent disclosed by the invention is short in production period and low in cost.
Public chat https://worldwide.espacenet.com/publica ... KC=A&FT=D# we can translate the summary into French:
The invention relates to a bleaching agent for diesel fuel as well as a method of preparation and a method of bleaching thereof. The bleaching agent is prepared from sodium silicate, triethanolamine, diethylenetriamine, N, N-di (3-aminopropyl) dodecylamine, p-phenylenediamine, sodium hydroxide and water. The bleaching agent has a simple preparation process and is used to bleach diesel oil, and a pretreatment agent used is composed of hydrochloric acid and formaldehyde. The diesel fuel bleaching agent described by the invention is a simple preparation process, a short production period and a low cost, and it is used to bleach black diesel fuel. a discoloration reaction at a rapid rate, no pollution and low losses; and after washing the black oil residue obtained with water, it is transferred to a hydrogenation device in order to be recycled and refined, and the recovery rate of diesel fuel is 98% or more. The diesel bleaching agent described by the invention has a short production period and low cost.
The first sentence in bold indicates that it is still quite complex chemically ...
What is hydrochloric acid used for?
And where is formaldehyde located? (apart from ikea furniture? )?