Chemical engineering

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Chemical engineers design, construct and operate process plants (fractionating columns pictured)

Chemical engineering is an engineering field which deals with the study of operation and design of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw materials into useful products. Chemical engineering uses principles of chemistry, physics, mathematics, biology, and economics to efficiently use, produce, design, transport and transform energy and materials. The work of chemical engineers can range from the utilization of nanotechnology and nanomaterials in the laboratory to large-scale industrial processes that convert chemicals, raw materials, living cells, microorganisms, and energy into useful forms and products. Chemical engineers are involved in many aspects of plant design and operation, including safety and hazard assessments, process design and analysis, modeling, control engineering, chemical reaction engineering, nuclear engineering, biological engineering, construction specification, and operating instructions.

Chemical engineers typically hold a degree in Chemical Engineering or Process Engineering. Practicing engineers may have professional certification and be accredited members of a professional body. Such bodies include the Institution of Chemical Engineers (IChemE) or the American Institute of Chemical Engineers (AIChE). A degree in chemical engineering is directly linked with all of the other engineering disciplines, to various extents.

Etymology

George E. Davis

A 1996 article cites James F. Donnelly for mentioning an 1839 reference to chemical engineering in relation to the production of sulfuric acid.[1] In the same paper, however, George E. Davis, an English consultant, was credited with having coined the term.[2] Davis also tried to found a Society of Chemical Engineering, but instead, it was named the Society of Chemical Industry (1881), with Davis as its first secretary.[3][4] The History of Science in United States: An Encyclopedia puts the use of the term around 1890.[5] "Chemical engineering", describing the use of mechanical equipment in the chemical industry, became common vocabulary in England after 1850.[6] By 1910, the profession, "chemical engineer," was already in common use in Britain and the United States.[7]

History

Main article: History of chemical engineering

New concepts and innovations

Demonstration model of a direct-methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image.

In the 1940s, it became clear that unit operations alone were insufficient in developing

process design.[12] Developments in chemical engineering before and after World War II were mainly incited by the petrochemical industry;[13] however, advances in other fields were made as well. Advancements in biochemical engineering in the 1940s, for example, found application in the pharmaceutical industry, and allowed for the mass production of various antibiotics, including penicillin and streptomycin.[14] Meanwhile, progress in polymer science in the 1950s paved way for the "age of plastics".[15]

Safety and hazard developments

Concerns regarding large-scale chemical manufacturing facilities' safety and environmental impact were also raised during this period.

industrial safety and environmental protection were given more focus.[18] In response, the IChemE required safety to be part of every degree course that it accredited after 1982. By the 1970s, legislation and monitoring agencies were instituted in various countries, such as France, Germany, and the United States.[19] In time, the systematic application of safety principles to chemical and other process plants began to be considered a specific discipline, known as process safety.[20]

Recent progress

Advancements in

DNA sequences in large quantities.[22]

Concepts

Part of a series on
Chemical engineering
Fundamentals
Unit processes
Aspects
Glossaries
  • Glossary of chemistry
  • Glossary of engineering
Category

Chemical engineering involves the application of several principles. Key concepts are presented below.

Plant design and construction

Chemical engineering design concerns the creation of plans, specifications, and economic analyses for pilot plants, new plants, or plant modifications. Design engineers often work in a consulting role, designing plants to meet clients' needs. Design is limited by several factors, including funding, government regulations, and safety standards. These constraints dictate a plant's choice of process, materials, and equipment.[23]

Plant construction is coordinated by

graduate programs. Project engineering jobs are some of the largest employers for chemical engineers.[25]

Process design and analysis

Main article: Process design

A unit operation is a physical step in an individual chemical engineering process. Unit operations (such as

process engineers.[27]

Process design requires the definition of equipment types and sizes as well as how they are connected and the materials of construction. Details are often printed on a

Process Flow Diagram
which is used to control the capacity and reliability of a new or existing chemical factory.

Education for chemical engineers in the first college degree 3 or 4 years of study stresses the principles and practices of process design. The same skills are used in existing chemical plants to evaluate the efficiency and make recommendations for improvements.

Transport phenomena

Main article: Transport phenomena

Modeling and analysis of transport phenomena is essential for many industrial applications. Transport phenomena involve

molecular level phenomena. Modeling of transport phenomena, therefore, requires an understanding of applied mathematics.[28]

Applications and practice

Two computer flat screens showing a plant process management application
Chemical engineers use computers to control automated systems in plants[29]

Chemical engineers "develop economic ways of using materials and energy".[30] Chemical engineers use chemistry and engineering to turn raw materials into usable products, such as medicine, petrochemicals, and plastics on a large-scale, industrial setting. They are also involved in waste management and research.[31][32] Both applied and research facets could make extensive use of computers.[29]

Chemical engineers may be involved in industry or university research where they are tasked with designing and performing experiments, by scaling up theoretical chemical reactions, to create better and safer methods for production, pollution control, and resource conservation. They may be involved in designing and constructing plants as a

project engineer. Chemical engineers serving as project engineers use their knowledge in selecting optimal production methods and plant equipment to minimize costs and maximize safety and profitability. After plant construction, chemical engineering project managers may be involved in equipment upgrades, troubleshooting, and daily operations in either full-time or consulting roles. [33]

See also

Related topics

Related fields and concepts

Associations

References

  1. ^ Cohen 1996, p. 172.
  2. ^ Cohen 1996, p. 174.
  3. ^ Swindin, N. (1953). "George E. Davis memorial lecture". Transactions of the Institution of Chemical Engineers. 31.
  4. ^ Flavell-While, Claudia (2012). "Chemical Engineers Who Changed the World: Meet the Daddy" (PDF). The Chemical Engineer. 52-54. Archived from the original (PDF) on 28 October 2016. Retrieved 27 October 2016.
  5. ^ Reynolds 2001, p. 176.
  6. ^ Cohen 1996, p. 186.
  7. ^ Perkins 2003, p. 20.
  8. ^ Cohen 1996, p. 185.
  9. ^ Ogawa 2007, p. 2.
  10. ^ Perkins 2003, p. 29.
  11. ^ Perkins 2003, p. 30.
  12. ^ Perkins 2003, p. 31.
  13. ^ Reynolds 2001, p. 177.
  14. ^ Perkins 2003, pp. 32–33.
  15. ^ Kim 2002, p. 7S.
  16. S2CID 4429741
    .
  17. ^ Bennet, Simon (September 1, 1999). "Disasters as Heuristics? A Case Study". Australian Journal of Emergency Management. 14 (3): 32.
  18. ^ Kim 2002, p. 8S.
  19. ^ Perkins 2003, p. 35.
  20. ISBN 978-1-118-94950-4
    .
  21. ^ Kim 2002, p. 9S.
  22. ^ American Institute of Chemical Engineers 2003a.
  23. ^ Towler & Sinnott 2008, pp. 2–3.
  24. ^ Herbst, Andrew; Hans Verwijs (Oct. 19-22). "Project Engineering: Interdisciplinary Coordination and Overall Engineering Quality Control". Proc. of the Annual IAC conference of the American Society for Engineering Management 1 (
    ISBN 9781618393616
    ): 15–21
  25. ^ "What Do Chemical Engineers Do?". Archived from the original on 2014-05-02. Retrieved 2015-08-23.
  26. ^ McCabe, Smith & Hariott 1993, p. 4.
  27. ^ Silla 2003, pp. 8–9.
  28. ^ Bird, Stewart & Lightfoot 2002, pp. 1–2.
  29. ^ a b Garner 2003, pp. 47–48.
  30. ^ American Institute of Chemical Engineers 2003, Article III.
  31. S2CID 195424881
    .
  32. ISSN 0926-3373
    .
  33. ^ Garner 2003, pp. 49–50.

Bibliography

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