Chen Jun

TL;DR: A phosphorus-free corrosion-inhibition antiscalant used for industrial circulation cooling water treatment, which is characterized by comprising the following medicament components by weight: 10-40% of N-alkyl group-N-fat acyl amino fatty acid salt, 5-25% of hydroxy carboxylate, 5 -20% of carboxylic acid copolymer, 1-4% of metal salt and the balance water.

TL;DR: In this article, a reverse osmosis membrane antisludging agent and preparing method is described, which comprises the following steps: allocating raw material with organic carboxylic acid, compound with amide and sulfonic group, inorganic compound and deionized water; blending compound with ammonium sulfonate group, and water according to proportion; heating to 50-90 deg.c.

TL;DR: In this article, a novel preparation method of the phosphorus-free corrosion inhibitor is described, in which the preparation method comprises the following three steps: the first step, alpha replaced chlorine substituted carboxylic acid is reacted with aliphatic amine, and the intermediate compound 1 is prepared; the second step, the fatty acid anhydride was reacted with the intermediate compounds 1 and 2 and the product 2 was prepared; then, the pH of the product produced in the second stage should be regulated to acid, and then the impurity should be separated by using water and

TL;DR: In this paper, a water disposing technique consisting of concrete kit and mated equipment, wherein the concrete contains magnetic metal oxide, macromolecular amide polymer, polymeric spray-typed ferric sulfate or polymeric aluminium chloride; the equipment is composed of sedimentation groove, magnetic rotary disc, collecting groove, pump and drug adding tank.

TL;DR: In this paper, a novel phosphorus-free corrosion inhibitor which is an organic compound with a novel structure was proposed. But the structure of the organic compound was not specified and it was not shown to guarantee the phosphorus free, non-toxic and non-pollution of the agent.