Phosphorus-free treatment agent for boiler water as well as preparation and application of treatment agent
A treatment agent and boiler water technology, applied in non-polluted water treatment, water/sludge/sewage treatment, special treatment targets, etc., can solve problems such as high system load requirements, phosphate disappearance, free alkali increase, etc., to achieve The effect of stable parameter control, improved adsorption force, and improved dispersion
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Embodiment 1
[0027] The phosphorus-free boiler water treatment agent of this embodiment is prepared from the following components and raw materials in mass percentage: 24% modified polyaspartic acid, 12% 3-acrylamido dopamine, and 10% pH regulator , 4% oxygen scavenger, 3% film-forming aid, and the balance is deionized water.
[0028] In the present embodiment, modified polyaspartic acid is polyaspartic acid modified by diethyl malonate, and the preparation method comprises the following steps:
[0029] 1) In a water solvent, react maleic anhydride and ammonium salt at 75°C for 1h, then raise the temperature to 172°C, and react for 1h to prepare polysuccinimide;
[0030] 2) Purify the polysuccinimide prepared in step 1), put the purified polysuccinimide in an alkaline aqueous solution, add diethyl malonate, react at 36°C for 16 hours, and then adjust The pH value of the system was adjusted to 5.8, then purified with 10 times the volume of absolute ethanol, stirred to obtain a reddish-brow...
Embodiment 2
[0036] The phosphorus-free boiler water treatment agent of this embodiment is prepared from the following components and raw materials in mass percentage: 18% modified polyaspartic acid, 10% 3-acrylamido dopamine, and 12% pH regulator , 5% oxygen scavenger, 2% film-forming aid, and the balance is deionized water.
[0037] In the present embodiment, modified polyaspartic acid is polyaspartic acid modified by diethyl malonate, and the preparation method comprises the following steps:
[0038] 1) In a water solvent, react maleic anhydride and ammonium salt at 78°C for 1.5h, then raise the temperature to 175°C, and react for 1h to prepare polysuccinimide;
[0039] 2) Purify the polysuccinimide prepared in step 1), put the purified polysuccinimide in an alkaline aqueous solution, add diethyl malonate, react at 38°C for 15 hours, and then adjust The pH value of the system was adjusted to 5.8, then purified with 10 times the volume of absolute ethanol, stirred to obtain a reddish-br...
Embodiment 3
[0045] The phosphorus-free boiler water treatment agent in this example is prepared from the following components and raw materials in mass percentage: 25% modified polyaspartic acid, 15% 3-acrylamido dopamine, and 10% pH regulator , 4% oxygen scavenger, 6% film-forming aid, and the balance is deionized water.
[0046] In the present embodiment, modified polyaspartic acid is polyaspartic acid modified by diethyl malonate, and the preparation method comprises the following steps:
[0047] 1) In a water solvent, react maleic anhydride and ammonium salt at 78°C for 1.5h, then raise the temperature to 175°C, and react for 1h to prepare polysuccinimide;
[0048] 2) Purify the polysuccinimide prepared in step 1), put the purified polysuccinimide in an alkaline aqueous solution, add diethyl malonate, react at 38°C for 15 hours, and then adjust The pH value of the system was adjusted to 5.8, then purified with 10 times the volume of absolute ethanol, stirred to obtain a reddish-brown...
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