Synergized acetals composition and method for scavenging sulfides and mercaptans

A process for synergizing the reaction between hydrogen sulphide and/or a mercaptan and a composition comprising

• I. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, and
• II. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone,
• wherein the reaction products I. and II. are hem iacetals and/or acetals, and
• the aldehyde or ketone contains 1 to 10 carbon atoms, and
• the monohydric alcohol comprises 1 to 15 carbon atoms, and
• the polyhydric alcohol contains 2 to 20 carbon atoms and 2 to 6 hydroxy groups, comprising the step of adding a reaction product from formaldehyde and a compound selected from the group consisting of ammonia and an amine, the amine being selected from the group consisting of primary alkyl amines having 1 to 4 carbon atoms, and primary hydroxy alkyl amines having 2 to 4 carbon atoms, to the reaction between the hydrogen sulphide and/or a mercaptan and a composition comprising
• I. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, and
• II. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone,
• wherein the reaction products I. and II. are hem iacetals and/or acetals, and the aldehyde or ketone contains 1 to 10 carbon atoms, and the monohydric alcohol comprises 1 to 15 carbon atoms, and the polyhydric alcohol contains 2 to 20 carbon atoms and 2 to 6 hydroxy groups.

A process for solids suppression in the reaction between between hydrogen sulphide and/or mercaptans and a composition comprising

• I. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, and
• II. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone,
• wherein the reaction products I. and II. are hem iacetals and/or acetals, and
• the aldehyde or ketone contains 1 to 10 carbon atoms, and
• the monohydric alcohol comprises 1 to 15 carbon atoms, and
• the polyhydric alcohol contains 2 to 20 carbon atoms and 2 to 6 hydroxy groups, comprising the step of adding an inorganic or organic alkaline compound to the reaction between between hydrogen sulphide and/or mercaptans and a composition comprising
• I. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, and
• II. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone,
• wherein the reaction products I. and II. are hem iacetals and/or acetals, and
• the aldehyde or ketone contains 1 to 10 carbon atoms, and
• the monohydric alcohol comprises 1 to 15 carbon atoms, and
• the polyhydric alcohol contains 2 to 20 carbon atoms and 2 to 6 hydroxy groups.