Phosphonate Scale and Corrosion Inhibitor introduction
(1) 1,2,3-Benzotrialole (BTA)
BTA can be absorbed on metal surface and form a thin film to protect copper and other metals. BTA can be used together with many scale inhibitors and fungi disinfectants in circulating cool water system, BTA has good corrosion inhibition effect in circulating cool water system. The dosage of 2-4mg/L is preferred. This product can also be used as anti-discolor agent, coating additives and luboil additive. 25kg in plastic barrel, or confirmed by clients. Storage for six months in room shady and dry place.
(2) 2-Mercaptobenzothiazole (MBT)
MBT product can be used as the copper corrosion inhibitor in circulating cool water system. The mechanism is due to the chemical absorption of MBT on copper surface, or chelation reaction between them. The dosage of 4mg/L is preferred. This product can also be used as plasticizer and photometer for acid copper plating.25kg in plastic barrel, or confirmed by clients. Storage for six months in room shady and dry place.
(3) Methylbenzotriazole (TTA)
TTA can be used as corrosion inhibitor of copper and copper alloy, it also has corrosion inhibition for black metals. TTA is absorbed on metal surface to form a thin membrane to protect copper and other metals from corrosion of air and other harmful subjects. The membrane is more uniform. When used together with MBT, the effect is better.
First, dissolved with alcohol or alkali, then added into circulating water system, the dosage of 2-10mg/L is preferred. If the metal is badly corroded, 5-10 times of normal dosage should be expected.
(4) Corrosion Inhibitor for Hydrochloric Acid Cleaning
Corrosion Inhibitor for Hydrochloric Acid Cleaning is a kind of imidazoline corrosion inhibitor. When cleaning metal using hydrochloric acid, this product can effectively inhibit steel corrosion.
The condition for using this product is that the cleaning media is hydrochloric acid and the cleaning object is black metals. It is suitable for acid cleaning of all types of high, medium and low pressure boiler, large scale of equipment and pipelines. When the dosage is 1-3‰, The corrosion ratio will be lower than 1g/m2•h.
(5) TH-503 Scale and Corrosion Inhibitor
TH-503 is built with organophosphine and polycarboxylic acid. It has advantages of high efficiency of scale & corrosion inhibition and good temperature tolerance. TH-503 can be used in water treatment of low pressure boiler. Boilers include radiator, steam, locomotive, etc. This product can also be used as scale and corrosion inhibitor in situation of desalination plant, distillation and bus water tank.
Add 200g per ton water of this product into boiler make-up water. During operation, blow-off every hour, 5-10 second each time. If the boiler has heavy scale, increase the quantity, and frequently blow-off. After 10-20 days' continuous operation, stop the boiler, open the handhole, remove the visible scale deposit to prevent conduit blockage, then, the boiler may turn into normal operation again. TH-503 would be better if the condense index of boiler water was controlled within 10. Other parameters may refer to related regulations (boiler water pH10-12, for example). pH value should not be lower than 7.
The material of medicate tank should be in plastic, concrete tank should be pretreated by anticorrosion method, otherwise, it will be eroded by the medicine, and the hardness will be increased much high. Total hardness of boiler make-up water should be lower than 200mg/L. Once too high hardness is countered, lime or other methods should be used to lower it.
(6) TH-504 Scale and Corrosion Inhibitor
TH-504 Scale and Corrosion Inhibitor is mainly composed of high efficient chelating agent. Through reaction between chelating agent and metal surface, a protective film is formed. TH-504 Scale and Corrosion Inhibitor has crystal distortion effect on calcium carbonate and calcium sulfate, thus the formed scale cannot firmly absorb on vessel wall. This product has the advantages of high temperature tolerance, high scale inhibition effect, hard to decomposed, free of carcinogenic substance such as sodium nitrite, full organic composite, good bio-degradation property. TH-504 Scale and Corrosion Inhibitor is a kind of environmental greenish scale and corrosion inhibitor for heating water.
TH-504 Scale and Corrosion Inhibitor can be directly used as scale and corrosion inhibitor for heating water. Because the process of softening is omitted, the cost for heating is largely decreased, great economic and social profits to enterprises may be expected.
According to water quality, 50-200g per ton water is preferred to the heating water system. If the make-up water is in midway, add quantity in proportion.
(7) TH-601 Scale and Corrosion Inhibitor
TH-601 Scale and Corrosion Inhibitor is built with organophosphoric acid, polycarboxylic acid and carbon iron corrosion inhibitor, it can effectively chelate and disperse calcium carbonate and calcium phosphate scales. TH-601 Scale and Corrosion Inhibitor has good scale inhibition effect on steel & iron in open wide circulating cool water system. It has the advantages of effective and strong corrosion inhibition.
Add TH-601 Scale and Corrosion Inhibitor into plastic pool (or box) every day, dilute with water and continuously add into inlet of dosage pump or metering valve (outlet of collecting tank). Dosage of 5-20mg/L is preferred (according to quantity of makeup water).
(8) TH-604 Scale and Corrosion Inhibitor
TH-604 Scale and Corrosion Inhibitor is built with organophosphoric acid, polycarboxylic acid, carbon iron and copper corrosion inhibitor. TH-604 can effectively chelate and disperse calcium carbonate, calcium sulfate and calcium phosphate scales. TH-604 Scale and Corrosion Inhibitorhas good scale inhibition effect on steel & iron and copper. TH-604 Scale and Corrosion Inhibitor is mainly used in circulating cool water system in power plant, chemical plant, petrochemical, steel & iron. It has the advantages of effective and strong corrosion inhibition.
Add TH-604 Scale and Corrosion Inhibitor into plastic pool (or box) every day, dilute with water and continuously add into inlet of dosage pump or metering valve (outlet of collecting tank). Dosage of 5-20ppm is preferred (according to quantity of makeup water).
(9) TH-619B Scale and Corrosion Inhibitor
TH-619B Scale and Corrosion Inhibitor is composed of organophosphoric acid, polycarboxylic acid, sulfosalt copolym-ers, copper corrosion inhibitor, special surfactant, etc. The organophosphine acid forms protection membrane and brings corrosion inhibition on metal surface. TH-619B Scale and Corrosion Inhibitor has good chelation and lattice distortion effect on calcium carbonate, calcium sulfate and calcium phosphate. Through rational prescription, TH-619B has good synergistic effect, with high corrosion inhibition ratio, high temperature tolerance, high scale inhibition ratio and not easy to degradation.
Add TH-619B into plastic pool (or box) every day, dilute with water and continuously add into inlet of dosage pump or metering valve (outlet of collecting tank). The dosage of 5-30ppm is preferred.
(10) TH-628 Scale and Corrosion Inhibitor
TH-628 Scale and Corrosion Inhibitor is composed of organophosphine acid, polycarboxylic acid, sulfosalt copolymers and thiazole. It can chelate and disperse calcium carbonate and calcium phosphate scales. TH-628 has good scale inhibition effect on steel & iron and copper. TH-628 Scale and Corrosion Inhibitor can be operated under high concentration index in power plant, chemical plant and central air conditioner.
Add TH-628 into plastic pool (or box) every day, dilute with water and continuously add into inlet of dosage pump or metering valve (outlet of collecting tank). The dosage of 5-20ppm is preferred.
(11) TH-682 Scale and Corrosion Inhibitor
TH-682 Scale and Corrosion Inhibitor is built with surfactant, dispersant, corrosion inhibitor, etc. It is suitable for system using soften water and other low hardness water as cool media. Because there are little contents of Ca2+ and Mg2+ ions in soften water, scale cannot be formed. Many corrosion inhibitors use Ca2+ and Mg2+ ions in water system to form protection membrane on metal surface, but there are little contents of Ca2+ and Mg2+ ions in soften water, the corrosion inhibition is a difficult question for soften water system. Through experiments, we develop this greenish scale and corrosion inhibitor for soften water system. TH-682 Scale and Corrosion Inhibitor is a composite corrosion inhibitor by inhibition of metal polarization. TH-682 Scale and Corrosion Inhibitor has no contents of such noxious subjects as nitrite and chromate, no pollution to environment, its corrosion ratio to carbon steel far lower than that of national standard.
Add TH-682 Scale and Corrosion Inhibitor into plastic pool (or box) every day, dilute with water and continuously add into inlet of dosage pump or metering valve (outlet of collecting tank). The dosage of 30-70ppm is preferred.