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          Oil field commonly used anti-fouling agent

          Post Time:2016-10-04 22:32:48 
                  

          The role of scale inhibitors: delay, reduce or inhibit scaling.


          Most of the commonly used anti-fouling agent is to prevent the growth of scale crystals, that scale inhibitor must be in the water of small crystals just formed from the water when the work.

          Inorganic phosphate

          Trisodium phosphate (Na3PO4), tetrasodium pyrophosphate (Na4P2O7), sodium hexametaphosphate ((NaPO3) 6), sodium tripolyphosphate (Na5P3O10).

          Features:

           Pharmacy price is low, anti-CaCO3 scale more effective.

          Easily hydrolyzed to produce orthophosphate, and calcium ions to produce insoluble calcium phosphate;

          With the increase of water temperature, hydrolysis speed.

          The maximum operating temperature is 80 ℃.

          Organic phosphoric acid and its salts

          Aminotrimethylenephosphonic acid (ATMP), ethylenediaminetetramethylene phosphonic acid (EDTMP), sodium hydroxyethylidene diphosphate (HEDP).

          Features:

          Not easily hydrolyzed

          Low dosage of a better anti-scaling effect

          And other sewage treatment agent compatibility is better

          Use temperature up to 100 ℃ above

          polymer

             Polyacrylic acid (PAA), polyacrylamide (PMA), polymaleic anhydride (HPMA), and the like. HPMA to prevent CaSO4, BaSO4 scale effect.

          Complex compound

             Several different effects of a single agent according to a certain percentage of mixing, as long as no reaction between each other, no offset, and play their own characteristics, can be compounded into compound use.

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