An energy analysis method and device for hydrocracking

Abstract

The invention provides an energy analysis method and device for hydrocracking. The method comprises the following steps: establishing an actual energy model of a hydrocracking unit and verifying the actual energy consumption of the hydrocracking unit according to the calibrated reference working condition data and the process data; without changing the existing process flow. According to the calibrated throughput and product yield, Under the condition of satisfying the preset quality requirements of the product, by using the optimized process and equipment operation data, the operation conditions of the lowest energy consumption of the hydrocracking unit can be determined, the relevant calculation regulations are carried out, the theoretical energy model of the hydrocracking unit is established, and the theoretical energy consumption of the hydrocracking unit is simulated and calculated. By comparing the actual energy consumption with the theoretical energy consumption, the energy-saving potential of the hydrocracking unit is explored. At first, that invention can obtain the low energy consumption that the hydrocracking unit can achieve in theory, and then compare the low energy consumption that the hydrocracking unit can achieve in theory with the actual energy consumption, thereby facilitating to tap the energy-saving potential of the hydrocracking unit.

Description

Technical field [0001] The invention relates to the technical field of energy consumption calculation of refinery processes, and in particular to a method and device for analyzing energy consumption of hydrocracking. Background technique [0002] With the development of large-scale, integrated, and complex petrochemical process production equipment, enterprises have also put forward higher and higher requirements for the control and optimization of the production process. In particular, the demand for energy saving and emission reduction of production enterprises has been increasingly valued. Advanced control strategies represented by predictive control and real-time optimization have been widely used. Advanced control technology can improve the stability rate of production equipment and achieve the optimization of "snap edge", thereby ensuring product quality, increasing productivity, reducing energy consumption, reducing accidents and avoiding downtime losses, and the economic ...

AI Technical Summary

Problems solved by technology

[0005] The existing hydrocracking benchmark energy consumption calculation method has made a series of calculation regulations during the calculation, and it is impossible to reasonably calculate the energy consumption according to the individual conditions such as the actual process level and processing plan of each set of equipment

Over the past 10 years, with the emergence of various new technologies, major changes have taken place in hydrocracking technology, and its operating conditions, raw material properties, product distribution, product standards, etc. have all undergone major changes. The energy consumption calculation method cannot completely and accurately reflect the changes in new raw materials and new processes, so it cannot reflect the minimum energy consumption that the device can theoretically achieve, which is not conducive to tapping the energy-saving potential of the device

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