Production Control And Technical Transformation In Hydrogen Peroxide Production By Anthraquinone Method

Hydrogen peroxide is an important green chemical material,and widely used in bleach,chemical synthesis,environmental protection and other fields.Main production methods for hydrogen peroxide include anthraquinone method,direct synthesis from H2 and O2,electrolytic process and isopropyl alcohol method.On the basis of industrial equipments of hydrogen peroxide by anthraquinone method,production control and technical innovation were investigated in detail in this thesis.On the basis of an understanding for main process flow,equipments and techogical index of hydrogen peroxide,the suitable controlled range was determined by studying process control method,the processing of abnormal conditions and technogical parameters at different loads.The technogical parameters were also determined by studying the purification process of hydrogen peroxide,and the total organic carbon content was reduced to less than 60 ppm.The safety and automatic control level were improved by the studies on the safety interlock system and the control method for the temperature of preparing vessel.The COD of effluent decreased from 000 ~ 1300 mg/L to 300 ~ 500 mg/L by increasing the wastewater pretreatment measures.Through the recycling utilization of condensation water and the application of AC Driver,steam consumption and power consumption were reduced from 165 kg/t to 150 kg/t,and from 155 ~ 160 kW·h/t to 140 ~ 145 kW·h/t,respectively.Using efficient recycling solvent to absorb heavy aromatics in the oxidation exhaust could decrease its consumption from 5.5 kg/t to 4.0 kg/t.More than 1000 t/a production were obtained from residual liquid.