With the hydrogenation of boiling bed residue as the core, the many advantages of boiling bed residue hydrogenation technology are used to achieve the purpose of lightening inferior heavy oil, improving the quality of light oil and improving the yield of light oil by combining it with coking, catalytic cracking and other processes.
From the perspective of the properties of the processed raw materials, the processing routes of the hydrogenation of boiling bed residue and different processes can have different raw material adaptability. For raw materials with a small degree of deterioration, such as raw materials with a metal impurity content of < 200mg g and a carbon residue
From the perspective of the pattern of processing types and device composition of domestic refineries, the processing routes of boiling bed residue hydrogenation and different process combinations can have different application scopes. As international oil prices continue to fall, it is estimated that the new domestic boiling bed device will be processed from the past.
The more inferior slag reduction raw materials are mainly used to replace the coking unit. Due to the limitations of low light oil yield, prominent environmental protection problems and low economic benefits of coking units, many refineries have made it clear that they want to shut down coking. VR enters the boiling bed, hydrogenation and slag reduction for coking to reduce the existing coking processing capacity and load, solves the problems of low light oil yield, outstanding environmental protection problems, and low economic benefits, improves the total light oil yield, and greatly improves economic benefits. For enterprises with fixed-bed hydrogenation devices, fixed-bed hydrogenation increases the ebulling-bed reactor, makes good use of the advantages of fixed-bed hydrogenation, and at the same time greatly improves the ratio of raw material slag and prolongs the operation cycle: for enterprises without fixed-bed hydrogenation devices, new ebullating-bed hydrogenation devices are built, and regular slag is added to FCC, and at the same time, gasoline production is greatly increased and economic benefits are improved. For new refineries, according to the properties of their raw materials and the needs of the target products, with boiling bed hydrogenation as the core, various processes and their combinations can be flexibly configured, and the types of refineries can also be broadened by using boiling bed hydrogenation. If the super-heavy oil is lightened, the synthesis ** is obtained.
The combination of boiling-bed residue hydrogenation with fixed-bed, coking, catalytic cracking and other processes is feasible in terms of process technology, which also improves the adaptability of each processing technology and greatly increases the flexibility of the total process. This also provides technical support for the refinery to use the existing equipment to process and expand the application of boiling bed technology. At the same time, the combined process can improve the conversion rate, the reliability of the device is high, the residue lightening can be realized to the greatest extent, the yield of middle distillate and the total liquid recovery of the whole plant can be increased, and the economic benefits can be greatly improved, and it has become the main processing means and technology of heavy and inferior residue.