32、Recovery and control device of by-product ammonia gas from propylene production by urea method（ZL202321776258.1）[2024/4/15]

31、Device for synthesizing dimethyl carbonate by immobilized catalyst（ZL202321776259.6）[2024/4/15]

30、Device for separating azeotrope of methanol and dimethyl carbonate by membrane separation coupling crystallization method（ZL202321776266.6）[2024/4/15]

29、Device for produce dimethyl carbonate by ester exchange method（ZL202321081817.7）[2023/12/2]

28、Partition wall rectification device for separating dimethyl carbonate（ZL202321080182.9）[2023/12/2]

27、Device for producing electronic-grade cyclic carbonate（ZL202321080143.9）[2023/12/2]

26、Heating rectification device for producing polyester-grade ethylene glycol by ester exchange method（ZL202320082685.3）[2023/11/20]

25、Falling film evaporator for cyclic carbonate separation（ZL202320094066.6）[2023/11/20]

24、Refining and purifying device for continuously producing electronic-grade methyl ethyl carbonate（ZL202120144804.4）[2023/11/20]

23、Device for separate and controlling mix carbonate in co-production of methyl ethyl carbonate and diethyl carbonate（ZL202120144629.9）[2023/11/20]

22、Residual liquid recovery system for ethylene carbonate device（ZL202120144628.4）[2023/11/20]

20、Reaction device for preparing propylene carbonate from urea and propylene glycol（ZL201520096637.5）[2023/11/20]

21、Separation device of ionic liquid catalyst for producing methyl ethyl carbonate （ZL202020239744.X）[2021/6/9]

19、Production device for refining pharmaceutical grade 1,2 propylene glycol from industrial grade 1,2 propylene glycol（ZL202020239791.4）[2020/10/18]

18、Separation device for polyester alcohol products in dimethyl carbonate production by ester exchange method（ZL201922073896.7）[2020/10/18]