Economic feasibility of heat pumps in distillation to reduce energy use

Saving energy in distillation towers by feed splitting

Two different strategies presented determine the sets of operating conditions that yield desired product purities for an SMB separator. The search was performed numerically by solving the analogous true-moving-bed model equations. A linear equilibrium binary mixture and mass-transfer effects were taken into account by using a bilinear driving force approximation to describe intraparticle diffusion. The strategies are equivalent and produce the same results. Comparison with the linear equilibrium model strategy indicates that there are new limiting values for the flow-rate constraints in the presence of mass-transfer effects. The constraints on sections I, II and III were more restrictive than those derived from equilibrium models, whereas the constraint on section IV was less affected. Qualitative observations drawn from a model of intermediate complexity were also presented to confirm our results.

Design of a simulated moving bed in the presence of mass-transfer resistances

https://bibliotecadigital.ipb.pt/bitstream/10198/1147/1/02.%201997%20CES.pdf

Separation of 1,1'-bi-2-naphthol enantiomers by continuous chromatography in simulated moving bed

Currently the separation of olefins (ethylene, propylene) from (ethane, propane) on a commercial scale is performed almost exclusively by cryogenic distillation in petrochemical industries. Since this technology is highly energy intensive, there is a strong economic incentive to explore alternative separation technologies with lower energy consumption. In this work, using the separation of ethylene and ethane as a representative case, a mathematical programming approach is proposed to optimize and retrofit a hybrid separation system consisting of a distillation column and a parallel membrane separation unit. A two-stage approach is used. First, a shortcut model is introduced that allows determining whether the hybrid system could be of interest and the order of magnitude of the energy savings that can be expected. Second, a superstructure optimization approach is proposed that uses rigorous models for both the column and the membrane using a process simulator and state of the art MINLP solvers. The result...

/pdf/design-of-hybrid-distillation-vapor-membrane-separation-4jzg7i82aq.pdf

Design of Hybrid Distillation—Vapor Membrane Separation Systems

Separation processes are the main cog in the manufacturing well of the chemical process industries (CPI). They are used for such essential chores as removal of contaminants from raw materials, recovery and purification of primary products, and elimination of contaminants from effluent water and air streams. This article provides an overview of key separation processes, highlights recent commercial developments, and provides insights on expected new developments. It focuses o the core processes for fluid mixture separations--distillation, extraction, adsorption, membranes, and their hybrid systems. Other important processes, such as crystallization and fluid/particle separations, are left for others to cover. 40 refs., 8 figs., 4 tabs.

Separation processes: Playing a critical role

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

J. L. Humphrey

Author Tools

Chat about Author

Papers

Separation processes: Playing a critical role