Phosphonate

In lacks the anti- filthy medicinal preparation gentle etching reagentin the boiler aqueous system to be able to have massive scale and the corrosion, but creates the thermal efficiency to reduce the wasteenergy, moreover also possibly can cause the steam to divulge, because scale seriously causes every year the accident surpasses the accidenttotal 20%; scale will form in the cooling system can reduce the flowchannel cross-sectional area, will increase the water cycleresistance, will hinder the normal heat change along with the scale unceasingly will add thick, will create equipment seriouscooling not good to bring a succession of evil consequence, willeffectively seek one kind effectively anti- to be filthy Phoshonate Scale and Corrosion Inhibitor becomes the urgent matter.

(1)  Amino Trimethylene Phosphonic Acid (ATMP)  is used in industrial circulating cool water system and oilfield water pipeline in fields of thermal power plant and oil refinery plant. ATMP can decrease scale formation and inhibit corrosion of metal equipment and pipeline. ATMP can be used as chelating agent in woven and dyeing industries and as metal surface treatment agent..

(2)  1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)  is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces. The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals. 

(3)  Ethylene Diamine Tetra (Methylene Phosphonic Acid) EDTMPA has high capacity for chelating metal ions. The complex constant with Cu is the largest in all chelating agents including EDTA. EDTMPA is a kind of high-pure grade reagent and innocuous, it can be used as detergent in semiconductor chip to prepare integrated circuit, as carrying agent for radioelement in medical industry, and as agent for inspection and therapy. The chelating capacity of EDTMPA largely exceed that of EDTA and DTPA, and can replace EDTA for chelating agent at almost any situation.

(4)  Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA) can be used as scale and corrosion inhibitor in circulating cool water system and boiler water, and especially in alkali circulating cool water system without additional pH regulation, It can also be used in oilfield refill water, cool water and boiler water with high concentration of barium carbonate. When used alone, little scale sediment is found even none of dispersant is used.

(5)  2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA) is a high efficient agent as scale and corrosion inhibitor. It is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. It can be used in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.

(6)   Polyhydric alcohol phosphate ester (PAPE)  is a new kind of water treatment chemicals. It has good scale and corrosion inhibition ability. Because more than one ployethylene glycol group is introduced into the molecular, the scale and corrosion inhibition for calcium scale is improved. It has good inhibition effect for barium and strontium scales. PAPE has good scale inhibition effect for calcium carbonate and calcium sulfate, it can mix well with polycarboxylic acid, organophoronic acid, phosphate and zinc salt. 

(7)   Polyamino Polyether Methylene Phosphonae (PAPEMP) is a new kind of water treatment agent. PAPEMP has high chelation and dispersion effects, high value of calcium tolerance, and good scale inhibition effects. PAPEMP can be used as scale and corrosion inhibitor in circulating cool water system and oilfield refill water system in situations of high hardness, high alkali and high pH value. PAPEMP has excellent scale inhibition ability to calcium carbonate, calcium sulfate and calcium phosphate.

(8)   HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA is a white crystal powder at room temperature, slightly soluble in water, with solubility less than 5%. HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA can inhibit most scale formation such as calcium carbonate, calcium sulfate, barium sulfate and ferric oxide. As water treatment chemicals, HMDTMPA is used as scale inhibitors for calcium sulfate and barium sulfate, for calcium sulfate in particular. It has high scale inhibition rate and can last for long effective time. HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA can be used for crush treatment in oilfield and for water treatment in boiler.

(9)  Bis(HexaMethylene Triamine Penta (Methylene Phosphonic Acid)) BHMTPMPA  is a high-efficient chelating scale inhibitor, it has good effect to carbonate and sulfate scale. BHMTPMPA has good water soluble properties and heat tolerance. BHMTPMPA has high calcium ion tolerance in a wide pH ranges and temperature as high as 120℃.