Integrated Optimization for the Coupling Network of Refinery and Synthetic Plant of Chemicals
Round 1
Reviewer 1 Report
The article uses the proxy model to formulate the constraints of gas production for SPC-refinery coupling network, which can greatly improve the resource utilization efficiency of both systems. Case study shows good environmental and economic benefits. The article also has the following problems, and publication is recommended after revision.
1. The case study section is not clear. For example, the text compares the 'Original situation' and the 'Optimization results". But it is not clear how the SPC and refinery hydrogen networks correspond to the "original situation" and how the SMR and CG supply the feedstock gas in this situation. Please explain such issue.
2. In the introduction, the article discusses the integration of hydrogen networks for refineries and SPC respectively, but the feasibility and potential of coupling them two is not sufficiently demonstrated in the article, please strengthen the theoretical explanation.
3. There are a few expression irregularities in the article, please take care to check and correct them.
4. Irregularities in formula writing. For example, equation (5) should be rewritten as:
5. On page 4, in " Zhang et al. [25] developed a NLP model containing all the necessary constraints for the synthesis of multi-impurity hydrogen network based on relative concentration.", the wrong word is used for "a NLP".
Author Response
Response to reviewers’ comments
We appreciate your time and effort on reviewing the manuscript. According to your suggestions, the manuscript has been carefully revised. Please refer to these modifications highlighted in blue in the revised manuscript and the response to your specific comments below.
1.The case study section is not clear. For example, the text compares the 'Original situation' and the 'Optimization results". But it is not clear how the SPC and refinery hydrogen networks correspond to the "original situation" and how the SMR and CG supply the feedstock gas in this situation. Please explain such issue.
Response: Related content has been added to section 4. The specific exposition is marked in blue.
- 2.In the introduction, the article discusses the integration of hydrogen networks forrefineries and SPC respectively, but the feasibility and potential of coupling them two is not sufficiently demonstrated in the article, please strengthen the theoretical explanation.
Response: The relevant theoretical additions have been added to the end of the first chapter marked in blue.
- There are a few expression irregularities in the article, please take care to check and correct them.
Response: The expression of the article has been improved.
- 4.Irregularities in formula writing.For example, equation (5) should be rewritten as:
Response: The errors have been corrected as required. The number of the modified formula is marked on site in blue.
- 5.On page 4, in "Zhang et al. [25] developed a NLP model containing all the necessary constraints for the synthesis of multi-impurity hydrogen network based on relative concentration.", the wrong word is used for "a NLP".
Response: The error has been corrected as required.
Reviewer 2 Report
The paper proposes a new integration method that coupling SPC network and refinery hydrogen network. Rigorous mathematical model is formulated and optimization can result in significant savings of natural gas and coal consumption and reduced CO2 emission. Thus, publication is recommended after the following amendments made.
1. In section 3.2.1, the mathematical description of the material conservation office is not clear. For example, equation (5)(6) describes the constraint relationship of the proxy model, so what is the meaning and expression of its specific parameters, please explain them in detail.
2. The overall presentation of the article needs improvement.
3. On page 3, " The results showed that when 20%-40% art of syngas used for ammonia production can obviously reduce the energy consumption and operation cost ", the word "art" is used incorrectly.
4. The symbols in the symbol table are incomplete, please double check.
Author Response
Response to reviewers’ comments
We appreciate your time and effort on reviewing the manuscript. According to your suggestions, the manuscript has been carefully revised. Please refer to these modifications highlighted in blue in the revised manuscript and the response to your specific comments below.
1. In section 3.2.1, the mathematical description of the material conservation office is not clear. For example, equation (5)(6) describes the constraint relationship of the proxy model, so what is the meaning and expression of its specific parameters, please explain them in detail.
Response: The mathematical model has been explained in more detail and the relevant changes are highlighted in blue in section 3.
- The overall presentation of the article needs improvement.
Response: The language of the article has been reworked, please refer to all modification marked in blue.
- On page 3," The results showed that when 20%-40% art of syngas used for ammonia production can obviously reduce the energy consumption and operation cost ", the word "art" is used incorrectly.
Response: The error has been corrected and marked in blue.
- 4.The symbols in the symbol table are incomplete, please double check.
Response: The symbol table has been modified.
