Chelating agent and preparation method and application thereof

• Main Authors: YAO BIN, DENG ZHIYING, LU HONGJUN, LU XIAOBING, WANG ERZHEN, SUI LEI, MU LIJUN, WANG YONG, SONG ZHAOJIE
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: ADHESIVES; CHEMISTRY; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PAINTS; POLISHES

The invention provides a chelating agent and a preparation method and application thereof. According to the total amount of the prepared chelating agent as 100%, the chelating agent is prepared from the following raw materials in weight percentage: 15% to 30% of ferrous stabilizer, 5% to 12% of dichloroethane, 10% to 20% of solvent, 10% to 20% of sodium hydroxide, 5% to 10% of carbon disulfide, 1.5% to 4.5% of conditioning agent and the balance of water. The raw materials of the chelating agent disclosed by the invention have wide sources and low cost. The chelating agent disclosed by the invention has stable performance and long service life, can be stored and used for a long time and has good compatibility with acidized acid liquor systems. 本发明提供了种螯合剂及其制备方法和应用。以制备得到的螯合剂总重量为100％计，所述螯合剂由包括如下重量百分比的原料制备得到：铁离子稳定剂15％～30％；二氯乙烷5％～12％；溶剂10％～20％；氢氧化钠10％～20％；二硫化碳5％～10％；调节剂1.5％～4.5％；余量为水。本发明的螯合剂原料来源广泛，价格低廉。本发明的螯合剂性能稳定，寿命长，可长期保存使用；与酸化酸液体系配伍性好。