Antisludging agent for low temperature flue gas heat exchange equipment of boiler and preparation method thereof
A technology of low-temperature flue gas and heat exchange equipment, applied in the field of scale inhibitors, can solve the problems of affecting the heat exchange efficiency of heat exchangers, coking and scaling on the surface of heat exchangers, shortening the operation period of devices, etc., and achieves high popularization and application value, The effect of preventing coking and scaling and slowing down coking and scaling
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Embodiment 1
[0019] In this example, the antiscalant used for boiler low-temperature flue gas heat exchange equipment includes 10% polyamide polyamine epichlorohydrin (PAE), 2% benzotriazole, and 20% sulfide Calcium phenate, 30% mixed solution of methylpentanol and triethylhexylphosphoric acid with a mass ratio of 1:2, 3% hexamethylenediamine, and 35% mixed solution of n-hexane and ethanol with a volume ratio of 1:1 solvent.
[0020] The preparation method of the scale inhibitor used in the boiler low-temperature flue gas heat exchange equipment in this embodiment includes the following steps:
[0021] 1) Put the solvent mixed by n-hexane and ethanol at a volume ratio of 1:1 into the container, stir and heat up to 45°C, then add 1 / 2 mass of polyamide polyamine epichlorohydrin and 1 / 2 mass of Benzotriazole, stirring at constant temperature until the polyamide polyamine epichlorohydrin and benzotriazole are completely dissolved to obtain a mixed solution A;
[0022] 2) Add sulfurized alkyl...
Embodiment 2
[0025] In this example, the scale inhibitor used for boiler low-temperature flue gas heat exchange equipment includes 15% polyamide polyamine epichlorohydrin (PAE), 3% 8-hydroxyquinoline, 25% long Chain-type alkylbenzene high base value synthetic calcium sulfonate, 30% of a mixture of methyl pentanol and polyacrylamide with a mass ratio of 2:1, 4% of hexamethylenediamine and 23% of n-hexane and ethanol in 1 : A solvent mixed in a volume ratio of 2.
[0026] The preparation method of the scale inhibitor used in the boiler low-temperature flue gas heat exchange equipment in this embodiment includes the following steps:
[0027] 1) Put the solvent mixed by n-hexane and ethanol at a volume ratio of 1:2 into the container, stir and heat up to 50°C, then add 1 / 2 mass of polyamide polyamine epichlorohydrin and 1 / 2 mass of 8-hydroxyquinoline, stirring at constant temperature until the polyamide polyamine epichlorohydrin and 8-hydroxyquinoline are completely dissolved to obtain a mixe...
Embodiment 3
[0032] In this example, the scale inhibitor used for boiler low-temperature flue gas heat exchange equipment includes 20% epoxidized polybutadiene resin, 3% melamine, and 25% long-chain linear alkylbenzene by mass percentage. Base value synthetic calcium sulfonate, 30% of a mixture of methyl pentanol and fatty acid polyethylene glycol ester with a mass ratio of 3:1, 3% of ethylenediamine and 19% by volume of n-hexane and ethanol in a volume of 2:3 than mixed solvents.
[0033] The preparation method of the scale inhibitor used in the boiler low-temperature flue gas heat exchange equipment in this embodiment includes the following steps:
[0034] 1) Put the solvent mixed by n-hexane and ethanol at a volume ratio of 2:3 into the container, stir and heat up to 60°C, then add 1 / 2 mass of epoxidized polybutadiene resin and 1 / 2 mass of Melamine is stirred at constant temperature until the epoxidized polybutadiene resin and melamine are completely dissolved to obtain a mixed solutio...
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