The management and control of material flow forms the core of manufacturing execution systems （MES） in the petrochemical industry. The bottleneck in the application of MES is the ability to match the material-flow m...The management and control of material flow forms the core of manufacturing execution systems （MES） in the petrochemical industry. The bottleneck in the application of MES is the ability to match the material-flow model with the production processes. A dynamic material-flow model is proposed in this paper after an analysis of the material-flow characteristics of the production process in a petrochemical industry. The main material-flow events are described, including the movement, storage, shifting, recycling, and elimination of the materials. The spatial and temporal characters of the material-flow events are described, and the material-flow model is constructed. The dynamic material-flow model introduced herein is the basis for other subsystems in the MES. In addition, it is the subsystem with the least scale in MES. The dynamic-modeling method of material flow has been applied in the development of the SinoMES model. It helps the petrochemical plant to manage the entire flow information related to tanks and equipments from the aspects of measurement, storage, movement, and the remaining balance of the material. As a result, it matches the production process by error elimination and data reconciliation. In addition, it facilitates the integration of application modules into the MES and guarantees the potential development of SinoMES in future applications.展开更多
In order to design a new technological process system to take the polymeric ferric aluminum silicate sulfate（PFASS） and to apply it in wastewater processing, the chemical composition analysis was carried on to the F...In order to design a new technological process system to take the polymeric ferric aluminum silicate sulfate（PFASS） and to apply it in wastewater processing, the chemical composition analysis was carried on to the Fuxin gangue, adopted the orthogonal experiment method to obtain optimum response condition of with the acid pickling taking the aluminum in the gangue and with alkali extracting taking the silicon in the gangue, The experiments indicate that the sample chemistry content which tests elect completely conform to the preparation inorganic polymer water treatment coagulant request standard. Used the polymeric ferric aluminum silicate sulfate results in which with the system take as the coagulant of treatment wastewater, used the mercerizing degree, the wastewater pH value, the coagulation time, the coagulant throws increment factors and so on to test and verify its influence on the waste water processing. The result indicates that by using this craft production PFASS in waste water processing, after the processed waste water achieves the emission standard, the processing effect is good.展开更多
Based on the results of cold model tests, LPEC has developed a technology for regeneration of FCC catalyst in a regenerator with novel grid type internals in order to intensify the contact between gas and solid and en...Based on the results of cold model tests, LPEC has developed a technology for regeneration of FCC catalyst in a regenerator with novel grid type internals in order to intensify the contact between gas and solid and enhance the coke burning efficiency in the regenerator. Test results have revealed that the density change in the fluidized bed equipped with grid internals is relatively homogeneous and the bubbling fre- quency is obviously reduced with apparent improvements in the dead fluidized zone adjacent to the regen- erator wall, and this device can be applied to the intensified regeneration of catalyst in the FCC regenerator. The commercial application of this device in a 0.8 Mt/a RFCCU at the refinery A had indicated that the carbon content of regenerated catalyst was reduced to 0.03% from 0.18%, and the amount of coke burned was increased by 5% with a definite reduction in main air consumption of the regenerator and some density reduction in the dilute phase section of the regenerator.展开更多
基金the National High Technology Research and Development Program of China (No.2007AA04Z191).
文摘The management and control of material flow forms the core of manufacturing execution systems （MES） in the petrochemical industry. The bottleneck in the application of MES is the ability to match the material-flow model with the production processes. A dynamic material-flow model is proposed in this paper after an analysis of the material-flow characteristics of the production process in a petrochemical industry. The main material-flow events are described, including the movement, storage, shifting, recycling, and elimination of the materials. The spatial and temporal characters of the material-flow events are described, and the material-flow model is constructed. The dynamic material-flow model introduced herein is the basis for other subsystems in the MES. In addition, it is the subsystem with the least scale in MES. The dynamic-modeling method of material flow has been applied in the development of the SinoMES model. It helps the petrochemical plant to manage the entire flow information related to tanks and equipments from the aspects of measurement, storage, movement, and the remaining balance of the material. As a result, it matches the production process by error elimination and data reconciliation. In addition, it facilitates the integration of application modules into the MES and guarantees the potential development of SinoMES in future applications.
文摘In order to design a new technological process system to take the polymeric ferric aluminum silicate sulfate（PFASS） and to apply it in wastewater processing, the chemical composition analysis was carried on to the Fuxin gangue, adopted the orthogonal experiment method to obtain optimum response condition of with the acid pickling taking the aluminum in the gangue and with alkali extracting taking the silicon in the gangue, The experiments indicate that the sample chemistry content which tests elect completely conform to the preparation inorganic polymer water treatment coagulant request standard. Used the polymeric ferric aluminum silicate sulfate results in which with the system take as the coagulant of treatment wastewater, used the mercerizing degree, the wastewater pH value, the coagulation time, the coagulant throws increment factors and so on to test and verify its influence on the waste water processing. The result indicates that by using this craft production PFASS in waste water processing, after the processed waste water achieves the emission standard, the processing effect is good.
文摘Based on the results of cold model tests, LPEC has developed a technology for regeneration of FCC catalyst in a regenerator with novel grid type internals in order to intensify the contact between gas and solid and enhance the coke burning efficiency in the regenerator. Test results have revealed that the density change in the fluidized bed equipped with grid internals is relatively homogeneous and the bubbling fre- quency is obviously reduced with apparent improvements in the dead fluidized zone adjacent to the regen- erator wall, and this device can be applied to the intensified regeneration of catalyst in the FCC regenerator. The commercial application of this device in a 0.8 Mt/a RFCCU at the refinery A had indicated that the carbon content of regenerated catalyst was reduced to 0.03% from 0.18%, and the amount of coke burned was increased by 5% with a definite reduction in main air consumption of the regenerator and some density reduction in the dilute phase section of the regenerator.
