Abstract
The cracking furnace is the core of an ethylene plant. An optimization method is built based on the integration of reaction network. Starting from atomic scope, an algebraic procedure is used to seek all possible reactions and establish the reaction network. Based on this, the reaction network is integrated and simplified to identify the variation rate of every component. The calculation procedure is developed to identify the variation of each component’s concentration and the selectivity and identify the optimal furnace parameters. For the studied furnace, the residence time corresponding to the minimum by-product production is identified to be 0.4 s, and its by-product generation is 4.3% less than that at the initial residence time (0.3 s).
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Abbreviations
- a–e, h, p :
-
Symbol of all components in reaction systems
- A :
-
Atom–component matrix
- C :
-
Concentration of every component (mol/m3)
- k :
-
Reaction rate constant
- l :
-
Reaction pipe range (m)
- M :
-
The number of the basis atom contained in a component
- PP:
-
Products set
- r :
-
Reaction rate (mol/(m3 s))
- Rank:
-
Rank of matrix
- RR:
-
Feeds set
- S :
-
Pipe cross-sectional area (m2)
- t :
-
Residence time (s)
- V :
-
Volume flow rate (m3/s)
- WW:
-
Whole components set
- X, Y, Z :
-
Vectors
- y :
-
The order of a reaction
- i :
-
Reaction number
- j :
-
Component number
- m, n :
-
The row and column of matrix
- PM:
-
The components which can only be the product
- RM:
-
The components which can only be the reactant
- DNM:
-
The components which can both be the reactant and product
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Financial support provided by the National key research and development program of China (2017YFB0602603) is gratefully acknowledged.
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Zhou, L., Li, K., Hang, P. et al. Optimization of the ethane thermal cracking furnace based on the integration of reaction network. Clean Techn Environ Policy 23, 879–887 (2021). https://doi.org/10.1007/s10098-020-01840-z
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DOI: https://doi.org/10.1007/s10098-020-01840-z