Regarding the layout of the catalytic units for heavy oil
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Currently, there are many different arrangements for the two main components of catalytic units in our country, and these arrangements significantly influence the energy consumption of such units. The current main configuration patterns include rapid-bed–turbulent-bed regeneration in parallel at the same height, coaxial single-end regeneration (single-stage regeneration in parallel at different heights), two-stage regeneration in parallel at different heights, and two-stage regeneration with three units in parallel. Please share your views on the above forms in terms of energy efficiency and operation
1. The reaction-regeneration scheme has a direct impact on the energy consumption of catalytic cracking units; from an energy consumption perspective, the side-by-side configuration is superior to the coaxial configuration； Single-stage regeneration is superior to two-stage regeneration ； Complete combustion of CO is superior to incomplete combustion of CO ； 2. The height of a coaxial regenerative system is generally 30% higher than that of a parallel system, which makes inspection and maintenance more difficult and increases costs ； At the same time, the coaxial design results in a reactor length that is too large, creating a long ineffective zone; this ineffective zone also leads to side reactions that produce dry gas and coke, thereby reducing the liquid yield ；