A cleaning agent composition contains 100 parts by weight of polyethylene oxide; 25 parts by weight to 90 parts by weight of at least one type of fatty acid ester that is selected from glycerin fatty acid ester, polyglycerin fatty acid ester, or sorbitan fatty acid ester; and 15 parts by weight to 45 parts by weight of a metal salt of a fatty acid and/or a hydroxyfatty acid. The cleaning agent composition is used for cleaning a flow channel for resin in a hot runner type mold.

Provided is a cleaning agent composition that is capable of efficiently performing the substitution of a molding raw material in a hot runner type mold. The cleaning agent composition contains 100 parts by weight of a thermoplastic resin; 1 part by weight to 20 parts by weight of at least one type of fatty acid ester that is selected from glycerin fatty acid ester, polyglycerin fatty acid ester, or sorbitan fatty acid ester; and 1 part by weight to 15 parts by weight of a metal salt of a fatty acid and/or a hydroxyfatty acid. The cleaning agent composition is used for cleaning a flow channel for resin in a hot runner type mold.

A composition capable of pretreating surfaces of equipment for use with an uncured cementitious material, such as uncured concrete includes an aqueous solution with colloidal silica. Pretreatment of a surface with such an aqueous solution may reduce or eliminate adhesion of uncured cementitious material to the surface. A composition capable of cleaning hardened and/or cured cementitious material from the surfaces of such equipment also includes an aqueous composition with colloidal silica. Hardened and/or cured cementitious material may be removed from equipment surfaces by wetting the hardened and/or cured cementitous material with the aqueous solution to soften the cementitious material, and optionally abrading the softened cementitious material to mechanically remove the same from the equipment surfaces. Systems for removing hardened and/or cured cementitious material from the surfaces of equipment capable of use with uncured cementitious material include an aqueous solution with colloidal silica and a mechanical removal component.

A micro-irrigation system cleaning method adds a formulation which contains a water-soluble organic acid which has a pK(1)a of less than about 4.0, and optionally a water-soluble phosphonate dispersant. The cleaning continues for a time period of from three to twenty-four hours in a static environment.

The present invention discloses an emulsion-type water-based detergent for oily sludge, and a preparation method and use method thereof. The emulsion-type water-based detergent includes components in the following mass percentage contents: 2-10 parts of surfactant, 3-10 parts of oil-soluble component and the balance being aqueous phase, based on 100 parts by weight. The preparation method includes: stirring the surfactant, the oil-soluble component and the aqueous phase to mix uniformly to obtain a homogeneous and stable emulsion-type water-based detergent at room temperature. During use, the oily sludge is first mixed with the emulsion-type water-based detergent and stirred under a certain temperature; mixture is subjected to oil-water-solid three-phase separation after the washing is completed; and at last, solid phase is rinsed with hot water under the same temperature.

A cleaning system is provided for a printing press recirculation system, in which the cleaning system generates a plurality of bubbles within a fountain solution of the printing press recirculation system. The cleaning system includes (i) a first composition comprising a solid blend including (a) a first alkaline cleaning agent having a first alkaline strength, (b) a detergent salt, (c) a non-foaming emulsifying agent, and (d) a second alkaline cleaning agent having a second alkaline strength, in which the first alkaline strength is greater than the second alkaline strength; (ii) a second composition comprising one or more organic acids. Also provided are methods of cleaning a printing press recirculation system.

Compositions and methods for cleaning wet strength resin contamination from papermaking equipment and/or for preventing wet strength resins from contaminating papermaking equipment using the compositions are disclosed. The compositions comprise an aqueous solution of a weak organic acid; a surfactant, preferably a nonionic surfactant, a divalent metal ion containing catalyst and optionally a glycol ether containing solvent.

A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40 C. or higher in the oxidation oven.

A cleaning solution for a turbine engine includes water within a range between about 68.65 percent and about 99.63 percent by volume of the cleaning solution; a first organic acidic component within a range between about 0.1 percent and about 15 percent by volume of the cleaning solution; wherein the organic acid comprises citric acid; a second organic acidic component within a range between about 0.1 percent and about 15 percent by volume of the cleaning solution; wherein the organic acid comprises glycolic acid; isoropylamine sulphonate within a range between about 0.07 percent and 0.14 percent by volume of the cleaning solution; alcohol ethoxylate within a range between about 0.035 percent and 0.07 percent by volume of the cleaning solution; triethanol amine within a range between about 0.035 percent and 0.07 percent by volume of the cleaning solution; sodium lauriminodipropionate within a range between about 0.03 percent and 1.0 percent by volume of the cleaning solution. The cleaning solution has a pH value in the range between about 2.5 and about 7.0.

Disclosed herein are methods for reducing fouling caused by process water present within a water recycling loop of a pyrolysis plant. The process water includes water, a pygas, and in some cases pygas byproducts. Fouling is caused by phase separation and accumulation of materials from the process water on equipment surfaces. The method includes applying a total of about 5 ppm to 500 ppm of one or more antifouling polymers to the process water to form a treated process water. The one or more antifouling polymers are selected from the group consisting of copolymers of unsaturated fatty acids, primary diamines, and acrylic acid; copolymers of methacrylamidopropyl trimethylammonium chloride with acrylic acid and/or acrylamide; copolymers of ethylene glycol and propylene glycol; and blends of two or more thereof.