Simulation of a process for the production of heptene

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Reference no: EM131698985 , Length: word count:9000

PRELIMINARY INFORMATION

In this project, you are first asked to replicate an existing simulation of a process for the production of heptene (C7H14) from an impure mixture of propene (C3H6) and butene (C4H8). Replicating existing results is often used to check that your methodology and parameter values are correct before undertaking further work. After checking your work, you are then asked to conduct an extension study of your choice on a process synthesis and design topic.

OBJECTIVES

The objectives of this project are to:
- Replicate an existing simulation, clearly documenting the assumptions and choices you made.
- Check that your simulation adequately approximates the existing simulation.
- Perform an extension study related to process synthesis and design, explaining the benefits of the study, your method, the results and their implications.
- Convey technical information in a professional report.

ASSIGNMENT TASKS

Please write a report that covers the following topics.

1. Replication of existing simulation
The process, flowsheet, equipment details and stream tables are provided in the document "Heptene process.pdf" on Blackboard, which was taken from Turton et al. You are asked to reproduce as closely as reasonably possible the results in this simulation. For your report, please include:
(a) A clear image of your Hysys flowsheet.
(b) Stream tables for the material and energy streams. The material streams should show component molar flowrates (kmol/h) for easy comparison with Table B.11.1.
(c) An explanation of the assumptions and decisions you had to make to develop the simulation.
Notes:
- Use equipment and stream IDs that match closely with those in the existing simulation; however, it is acknowledged that there may need to be some differences.
- You are advised to construct your simulation using simple unit models; for example, conversion reactors and shortcut columns.
- While you are asked to reproduce Turton's work closely, it is acknowledged that there will almost always be differences in results when using different simulators. Note that Turton used the CHEMCAD simulator.
- The Hysys (.hsc) case file that attempts to replicate the existing simulation will need to be submitted with your report.

2. Checking simulation results
(a) Describe and show evidence of the checks that you performed to build confidence that your simulation matches closely with the simulation results in Turton's document.
(b) Briefly comment on the most significant discrepancies: try to explain why they occurred and what implications they could have.
(c) Copy and paste the Input Summary (Home - Summaries - Input) of your simulation from Question 1 into an appendix. This appendix is not counted in the page limit.

3. Extension study
For your selected extension topic on the heptene process, please:
(a) Outline the intended scope and briefly explain the significance and potential benefits of conducting the selected study.
(b) Briefly describe the methodology you used for the study, referring to the literature as appropriate.
(c) Show the results of the work performed: flowsheets, tables, graphs, equations, analyses and so on.
(d) Discuss the results, including the limitations, implications and recommendations of your study.

Before selecting a topic, please bear in mind the limited information that is available in Turton's document. Think carefully about the data you might need and how it could be obtained or approximated. Some of the topics may require further research and some self-study. You are free to select any one of the topics here to investigate the heptene process further:
- Alternative reactor configurations
- Alternative separation systems
- Heat exchanger network analysis and synthesis
- Dynamic simulation and control
- Optimisation and economic analysis
- Plant debottlenecking
- A fully rigorous simulation that eliminates shortcut and simplified models
- Another topic of your choice related to process synthesis and design that interests you. Please check with your unit coordinator for the topic's suitability before starting the study.

To conduct some of these studies, you may need to replace some of the simplified units by rigorous units.

REPORT FORMAT
The main body of the report must be at most 15 pages long. Please use single or 1.15 line spacing and A4 pages. A professional standard of writing and presentation is expected. Aside from the main body, the report should have a cover page, a summary of at most ½ page, table of contents, list of figures, list of tables, list of abbreviations (if needed), references and an appendix that contains the Input Summary of your simulation from Question 1. These are not included in the page count; however, any additional appendices will be counted towards the page limit. Pages should be numbered.

Attachment:- Heptene process.pdf

Reference no: EM131698985

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Reviews

len1698985

10/31/2017 4:00:01 AM

Formatting - Some front matter missing - Page limits or other format requirements not satisfied - The formatting does not follow good practice for technical reports - Citations and references have formatting errors - All front matter is provided - Page limits and format requirements are satisfied - The report mostly follows technical report conventions, but some inappropriate default settings are used - Citations and references are correctly formatted - All front matter is provided - Page limits and format requirements are satisfied - The report follows the conventions of technical report writing - Citations and references are correctly formatted

len1698985

10/31/2017 3:59:56 AM

Criterion Scoring Writing, tables and figures - The writing has spelling and grammatical mistakes that distract the reader; the writing is too long for its information content - The tables and figures show poor judgment (in labelling, organisation, scale, ...) - The writing has some spelling and grammatical mistakes, but they do not detract much from reading; the writing is a little wordy - The tables and figures are generally well presented - The writing is free from spelling and grammatical mistakes, and is clear, concise and easy to read - The tables and figures are well thought out and well presented in a way that helps understanding

len1698985

10/31/2017 3:59:48 AM

Results - Little evidence of work is presented; it appears that little work has been done - The work contains significant errors or omissions - Some work has been done according to the methodology, but is not clearly presented - There are minor errors or omissions - An appropriate body of work has been completed and is clearly presented - The work does not contain any errors or omissions Mark: 0 9 18 Discussion - The results are just restated without adding anything further - Some major limitations of the study are not mentioned - Major implications are missing or seem not to be based on the work performed; no practical recommendations are made - The discussion shows reasonable judgment, but lacks practicality in places - Most of the important limitations are explained - Most of the important implications are given, but are narrowly focussed and with few practical recommendations - The results are discussed with insight and judgment - All limitations of the study are clearly explained - The study’s implications are well argued, flow from the results and from wider thinking; some credible recommendations are made

len1698985

10/31/2017 3:59:39 AM

Criterion Scoring Scope, significance and benefits - The intended study is unclear, impractical or unnecessary - The significance and benefits are not clear or not convincing - The scope is explained, but is not completely realistic - The significance and benefits are credible, but some minor aspects are missing - The scope is clearly explained, valuable and realistic given the problem context - The significance and benefits are credible; some benefits are quantified Mark: 0 3 6 Methodology - The method is not explained or will not help solve the intended problem - The method is suitable and is explained, but is not referenced adequately - The method used is briefly and clearly explained with referencing as appropriate and is suitable for solving the intended problem

len1698985

10/31/2017 3:59:23 AM

Comment on significant discrepancies - Some key differences are missed or minor matters are overemphasised - The explanations are unclear or not credible; implications are not discussed - No distinction is made between major and minor differences - Some explanations are not completely credible; some implications are missed - Significant discrepancies are discussed, but not minor ones - Explanations are clear and credible; discussion of implications show good judgment

len1698985

10/31/2017 3:59:18 AM

Criterion Scoring Description and evidence of checking - Checking is attempted, but focusses on only one aspect of the work - The evidence presented is not comprehensive or convincing - The checking is reasonable, but does not cover all aspects of the work - Evidence is presented, but not in a concise and comprehensive way - The checking is described clearly and covers all reasonable aspects of the work, showing good judgment - The evidence is clearly presented and summarised

len1698985

10/31/2017 3:59:08 AM

Assumptions and decisions - Some major assumptions or decisions are missing; there is little explanation and almost no credible justification given - Most assumptions and decisions made are listed, but the explanations and justifications lack key information or credibility in places - All assumptions and decisions made are briefly but clearly explained and justified

len1698985

10/31/2017 3:59:03 AM

Closeness to Turton’s simulation results - There are significant differences with the work of Turton that are likely due to simulation errors - The simulation results are close to those of Turton in most aspects; there appear to be only minor errors in the simulation - The simulation closely matches that of Turton; any differences are likely due solely to differences in the software used

len1698985

10/31/2017 3:58:56 AM

Replication of existing simulation (35 marks) Criterion Scoring Flowsheet image and stream tables - The flowsheet has missing or redundant elements; the layout is confusing; the image resolution is too low - The stream tables are missing information or use different units - The flowsheet is complete and mostly clear, but with some poor spacing or overlapping information; the resolution is adequate - The stream tables contain all the necessary information - The flowsheet is complete and well laid out; all lines and text can be easily read - The stream tables contain all the necessary information and are formatted to allow easy checking with the results of Turton

len1698985

10/31/2017 3:58:41 AM

MARKING The breakdown of marks is as follows: Task Marks 1. Replication of existing simulation 35 2. Checking simulation results 10 3. Extension study 45 Report 10 TOTAL 100 Please see the marking rubric in CHEN3003 Individual Project 2017 Feedback and Marking Sheet for more detail about how each task will be assessed. Please submit two files using the Individual Project links on Blackboard (Bentley) or Moodle (Miri): • Your report document; • An archive (zip) file containing all other files you created: your Hysys (.hsc) simulation file(s), any spreadsheets, drawings and similar.

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