Three-zone parallel co-control multistage catalytic cracking method according to raw material types
A technology for catalytic cracking and raw materials, applied in catalytic cracking, chemical instruments and methods, molecular sieve catalysts, etc., can solve the problems of high dry gas and coke yield, complex cracking products, unfavorable industrial applications, etc., to reduce dry gas and coke. Yield, improve conversion rate, improve the effect of utilization rate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0090] In the preparation of the catalyst, too much or too little loading of non-metal elements and metal elements will affect the catalytic effect of the catalyst. For example, if the loading of metal elements / non-metal elements is too much, the dispersion is not good, and it is easy to gather at the pores of the catalyst and coke. If the loading of metal elements / non-metal elements is too small, even if the catalytic reaction time is extended, the expected catalytic effect cannot be achieved. Therefore, the loading amount of each metalloid element in the catalyst is about 0.05-5 wt%, and the loading amount of each metal element is about 0.1-10 wt%, both based on the mass of the catalyst.
[0091] When carrying out non-metal modification and metal modification, regardless of the order, hydrothermal treatment is required between the second type of modification to dredge the molecular sieve channel and facilitate the loading of the next type of modifying elements. The conditio...
Embodiment 1
[0110] figure 1 It is a schematic diagram of a three-zone parallel coordinated multi-stage catalytic cracking system according to feedstock type according to an embodiment of the present invention. Such as figure 1 As shown, the system includes a first riser 1 , a second riser 2 , a third riser 3 , a fluidized bed reactor 4 , a regenerator 5 and a supplementary heat generator 6 outside the regenerator 5 . Wherein, the outlet of the first riser 1, the outlet of the second riser 2 and the outlet of the third riser 3 are respectively communicated with the inlet of the fluidized bed reactor 4 through pipelines, and the outlet of the spent catalyst of the fluidized bed reactor 4 is It is connected with the standby catalyst inlet of the regenerator 5 through a pipeline, the standby catalyst outlet of the regenerator 5 is connected with the standby catalyst inlet of the supplementary heater 6 through the standby catalyst delivery pipeline, and the pre-combustion catalyst outlet of t...
Embodiment 2
[0122] figure 2 It is a schematic diagram of a three-zone parallel coordinated multi-stage catalytic cracking system according to feedstock type according to another embodiment of the present invention. Such as figure 2 As shown, the system of this embodiment and figure 1 The difference of the shown system is that the regenerated catalyst outlet of the regenerator 5 is not only communicated with the inlets of the first riser 1, the second riser 2 and the third riser 3, but also communicated with the inlet of the fluidized bed reactor 4 , used to input and return the regenerated catalyst a to the first riser 1 , the second riser 2 , the third riser 3 and the fluidized bed reactor 4 for recycling.
[0123] use figure 2 The difference between the method shown in the system for catalytic cracking of light hydrocarbons and that of Example 1 is that the regenerated catalyst a in the regenerator 5 is returned to the first riser 1 and the second riser 2 respectively through the ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More