There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.

Various embodiments relate to devices and methods for treating a mixture of expansion gas and filling product foam in a beverage filling plant, comprising the steps of introducing the mixture of expansion gas and filling product foam into a closed separation container and extracting the expansion gas out of the closed separation container via suction.

Provided is a device which is capable of ongoing measurement of variable foaming tendencies in a fluid system and provide a signal to regulate the feed rate of defoamer accordingly to maintain foaming at an acceptable target level. The regulation of feed can be accomplished automatically or manually.

Provided is a device which is capable of ongoing measurement of variable foaming tendencies in a fluid system and provide a signal to regulate the feed rate of defoamer accordingly to maintain foaming at an acceptable target level. The regulation of feed can be accomplished automatically or manually.

A defoaming adjuvant comprises a solid particulate carrier and a polyalkylene glycol adsorbed on to the solid particulate carrier, where the polyalkylene glycol is a reaction product of an alkyl alcohol initiator with 1, 2-butylene oxide and, optionally, propylene oxide.

There is provided a defoaming agent having excellent defoaming persistence. The defoaming agent includes; hydrophobic silica having a hydrophobicity (M.sub.X) of 50 to 85, and a rate of change (M.sub.Y/M.sub.X) of a hydrophobicity (M.sub.Y) after immersion for 1 hour in a methanol/ion-exchange aqueous solution (volume ratio of 80/20) of sodium hydroxide with a pH of 13 at 25° C. to the hydrophobicity (M.sub.X) of 0.8 to 1.0; and at least one kind of liquid selected from the group consisting of a hydrocarbon oil, a non-reactive silicone oil and a polyoxyalkylene compound.

There is provided a defoaming agent having excellent defoaming persistence. The defoaming agent includes; hydrophobic silica having a hydrophobicity (M.sub.X) of 50 to 85, and a rate of change (M.sub.Y/M.sub.X) of a hydrophobicity (M.sub.Y) after immersion for 1 hour in a methanol/ion-exchange aqueous solution (volume ratio of 80/20) of sodium hydroxide with a pH of 13 at 25° C. to the hydrophobicity (M.sub.X) of 0.8 to 1.0; and at least one kind of liquid selected from the group consisting of a hydrocarbon oil, a non-reactive silicone oil and a polyoxyalkylene compound.

A stabilized antifoaming composition having at least three components. The first component is an antifoaming agent. The second component is an ethylene-(meth)acrylic acid copolymer. The third component is a salt.

A gas scrubber cone condition monitoring system has a sealed gas scrubber cone (9) moveably mounted in a gas pipe (1), a collar (5) fixedly mounted radially outward of the cone in the gas pipe and a pressure tap (12) into the sealed cone. The pressure tap is coupled to a condition monitor (17,18) via an input line (16). An output line (14) from the condition monitor is coupled to a gas pipe (15), downstream of the sealed cone. The condition monitor includes at least one of a pressure gauge and a gas flow meter.

A gas scrubber cone condition monitoring system has a sealed gas scrubber cone (9) moveably mounted in a gas pipe (1), a collar (5) fixedly mounted radially outward of the cone in the gas pipe and a pressure tap (12) into the sealed cone. The pressure tap is coupled to a condition monitor (17,18) via an input line (16). An output line (14) from the condition monitor is coupled to a gas pipe (15), downstream of the sealed cone. The condition monitor includes at least one of a pressure gauge and a gas flow meter.