Shanghai Daoqin Plastics Co., Ltd.

         production polyamide (PA) fiber and resin caprolactam is production polyamide (PA) fiber and resin main/primary raw materials, polyamide (PA) fiber in USA nylon, in China 叫锦纶, is most 早由锦州石化 achieve product 化, 故称锦纶. 锦纶66 is adipic acid and hexamethylenediamine polycondensation material. 锦纶6 is caprolactam ring polymerization formed.

         currently inner caprolactam production process technology main/primary is in 石化巴陵石化 design and cationic design 院.

         ring already ketone and is production caprolactam main/primary raw materials:

        1, ring already ketone is types application areas separation important chemical industry raw materials, tool has thin and ketone odor color transparent liquid 体, micro solvent water, can solvent ether, and other multiple has machine solvent agent, main/primary used as caprolactam and adipic acid and its salt in 间体. due to its tool has solvent understanding can force strong/high, low and versus for relatively low price and other features, by used as various coating material, paint, ink and resin solvent agent and dilute agent, leather processing light agent and dilute agent, light and magnetic property 记录材 material coating use solvent agent and other. meanwhile also can made lower 游衍生 material, ring ketone -甲 aldehyde resin, oxygen ring ketone, 邻甲基苯酚, anti agent 4010 and other.

        2, also 叫石炭 acid, is types most simple type has machine material, tool has low acid property, pure 净 苯酚 is color 晶体, in gas 里会因 small separation by oxidation powder color. has 毒, has property, normal temperature lower micro solvent water, easy solvent 于酒精 and other has machine solvent liquid;当 temperature degree high 于65℃时, can water 以任意 ratio/proportion solvent, concentrated solvent liquid for has strong/high property, 不慎沾 to application 酒精洗涤. solvent liquid add bromine water, has white 沉淀(三 bromine 苯酚); can and 卤素, acid, acid and other in ring upper 发生取代; can and chlorine iron reaction, make solvent liquid formed color, solvent liquid add bromine water, has white 沉淀(三 bromine 苯酚). main/primary used for manufacturing aldehyde resin, di 酚A and caprolactam. its in production aldehyde resin is its most large applications, 占苯酚 output/production volume semi above.

         applications

         caprolactam large separation used for production poly caprolactam, rear 者约90% used for production combined formed fiber, 即卡普隆, 10% use plastics, used for manufacturing gears, bearings, pipe/tube, medical devices and electrical, insulation material and other. used for coating material, plastics agent and a small amount of used for combined formed acid and other.

         production methods

        1943 year, Germany method company through ring ketone -羟 amine combined formed (现 in is method), achieve caprolactam industrial production. combined formed fiber industrial development, rear 出现 甲苯 method (ANIA method), light 亚硝化 method (PNC method), inner ester method (UCC method), ring 己烷硝化 method and ring ketone method. new positive in development ring ketone oxidation method, due to production process in using/adopting amine ring ketone 肟化, process/workflow simple, already 引起人们 关注.

        1.肟 method

        首先 will high pure degree ring ketone and acid amine in 80-110℃ lower shrink combined reaction formed ring ketone 肟. separation ring ketone 肟以发烟硫 acid is catalytic agent, in 80-110℃经贝克曼 heavy 排转位 is coarse caprolactam, coarse caprolactam through 萃取, 蒸馏, crystallization and other 工序, made high pure degree caprolactam. method raw materials ring ketone can 由苯酚 add hydrogen ring alcohol, again hydrogen 而; or ring 己烷空 gas oxidation formed ring alcohol and ring ketone, separation rear ring alcohol catalytic hydrogen formed ring ketone.

        2.甲苯 method

        甲苯 in salt catalytic agent function lower oxidation formed acid, acid use active property 炭载体 upper catalytic agent liquid versus add hydrogen formed hydrogen acid, in 发烟硫 acid in, hydrogen acid and 亚硝酰硫 acid reaction formed caprolactam. method due to 甲苯资源丰富, formed cost low, tool has development front 途.

        3. light 亚硝化 method

         ring in gas 灯照射 lower and chlorine 亚硝酰发生 light chemical reaction, 直接转化 formed ring ketone salt acid salt, ring ketone salt acid salt in 发烟硫 acid in lower, through 贝克曼 heavy 排转化 is caprolactam.

        4.苯酚 method

        苯酚 in catalytic agent in lower add hydrogen, made ring alcohol, pure rear hydrogen coarse ring ketone. ring ketone pure rear and amine reaction to ring ketone 肟, again 经贝克曼移位生 formed caprolactam, reaction material in acid use in and material amine. coarse caprolactam series chemical and material 理处理 to pure caprolactam.