Free

Teaching Document - Essay Example

Comments (0) Cite this document
Summary
It seeks to explain the industrial process of starch to glucose hydrolysis. The learner should be able to explain various operations in the conversion process and its significance at the…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER94.9% of users find it useful
Teaching Document
Read TextPreview

Extract of sample "Teaching Document"

Teaching Document The purpose of this document is to explain a particular process in chemical engineering. It seeks to explain the industrial process of starch to glucose hydrolysis. The learner should be able to explain various operations in the conversion process and its significance at the end. The process is majorly a conversion biochemical process operation, but also contains these process operations; Phase separation operation, mixing the operation and material transfer operations (Silla 10).
The process uses corn-starch slurry (liquid with 30%-40% solid) that contains the starch to be converted to glucose. The other chemicals used include: alpha amylase enzyme, gluco-amylase enzyme and carbon which is used in the adsorbers as a decolorizer. The process occurs in five main stages; two hydrolysis processes that convert about 100% of the starch in the slurry into glucose and three evaporation processes to dry up the glucose. The starch slurry first flows into the first hydrolyser, R1, which converts 25% of the starch into glucose using alpha-amylase enzyme that catalyzes the hydrolysis process. After the first hydrolysis process, the viscosity of the slurry is reduced, and the slurry is then passed through a centrifuge, PS-1, which removes any proteins and oils present.
The slurry is then passed through the second hydrolyser, R-2, which completes the hydrolysis process using the gluco-amylase enzyme that leads to the overall conversion of starch to glucose to almost 100%. The viscosity reduction of the slurry after the first hydrolysis process ensures proper mixing with the gluco-amylase and prevents the formation of unhydrolyzable gelatinous material in the second hydrolyser. After the second process of hydrolysis, the slurry is decolorizes in an adsorber, CS-1, parked with carbon (Silla 23).
After the conversion of starch to glucose the rest of the process dehydrates the glucose. A dry product is then obtained using the process of evaporation. The glucose solution is pumped into the first stage of evaporation where a portion of the water is removed. To conserve energy (heat), the first stage of evaporation uses mechanical re-compression of the vapor evolved and since glucose is heat sensitive the process is conducted in a vacuum produced by a vacuum pump, C-1. The first evaporation stage is carried out in two steps; in the first step, energy is transferred to the solution in the boiler to evaporate some water concentrating the glucose. In the next step vapor and liquid are separated in a phase separator.
After the initial stage of evaporation, the solution is then decolorized again in adsorber. Little amounts of organic acid is removed in an ion exchanger, R-3, which replaces anions with hydrogen ions and cations with hydroxyl ions thereby replacing the organic acid with water. The next two stages of evaporation are conducted in a vacuum. The water vapor from the phase separator is first removed by direct contact with water in a barometric condenser. The condensates develop static pressure in the condenser which enables it to flow out through pipes. To obtain the glucose powder, it is separated from the solution in horizontal cylindrical crystallizers, CS-10, by cooling and gradually mixing at 1.5 rpm. The solution is then transferred to perforated-screen centrifuge (PS-1) where the solution is partially separated from the crystals. The wet crystals containing about 14% water are then conveyed to a rotary drier, CS-11, which removes the remaining water (Silla 27). From the diagram in fig 1.3 shown, as provided by Silla (2003), the process is described as follows (p 24):
Key
1. 1st hydrolyser – R-1
2. 2nd hydrolyser – R-2
3. Vacuum pump –P-1
4. Centrifuge – Ps-1
5. 1st Adsorber – CS-1
6. 2nd Adsorber –CS-3
7. Ion exchanger – R-3
8. Rotary – Cs-11
9. Crystallizer – CS-10
10. Evaporator – CS-2
11. Pumps - P-1, P-2, P-3, P-4, P-7
10. Heater – H-2
11. Tank- S-2
Barometric condenser – CS-5, CS6
The logic and significance of this process is that it takes place in the body of animals and human beings to convert the starch back glucose to aid the process of respiration. The process relies on enzymes to convert the starch to glucose, and it occurs in stages. This technique was borrowed by chemical engineers to manufacture glucose in large scale for commercial purposes. The industrially manufactured glucose is used for industrial fermentation to produce ethanol and to soften the food texture. In addition it adds volume, prevent the crystallization of sugar and finally enhance the flavor.
Work cited
Silla, Harry. Chemical process engineering: design and economics. CRC Press, 2003 Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Teaching Document Essay Example | Topics and Well Written Essays - 500 words”, n.d.)
Teaching Document Essay Example | Topics and Well Written Essays - 500 words. Retrieved from https://studentshare.org/english/1663252-teaching-document
(Teaching Document Essay Example | Topics and Well Written Essays - 500 Words)
Teaching Document Essay Example | Topics and Well Written Essays - 500 Words. https://studentshare.org/english/1663252-teaching-document.
“Teaching Document Essay Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.org/english/1663252-teaching-document.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Teaching Document

Planning Document

...? PROJECT PLANNING Planning of the project or project management is the core of the life cycle of theproject and informs all the stakeholders the direction of the manager and means of attaining the project objectives. The stage of program planning involves the documentation of plans, the definition of needs and achievable and creation of plans. Project planning entails establishing a series of steps to aid to direct the group through implementation and completion program stages. The plans established during project planning stage will aid the manager to save time, resources, quality, challenges, transformations and other issues. Additionally, it helps the manager to manage team, members of staff and outside stakeholders...
6 Pages(1500 words)Research Paper

Remote Document Vault OCD (Operational Concept Document)

...? REMOTE DOCUMENT VAULT OCD and number: submitted: REMOTE DOCUMENT VAULT OCD Executive Summary This project is built on the principles of operational concept document, of which document management is a key component. The idea was to construct a remote document vault that has a characteristic that allows for text file storage, retrieving and queries. The main architecture is thus composed of two major features of operational concept document namely document vault and client vault. Even though there are existing document vaults that are used in various enterprise architectures, the core essence of this...
19 Pages(4750 words)Essay

SUPPROTING DOCUMENT

... To Whom It May Concern Dear Sir/Madam, I, Su-Jung Kang, of the of Toronto, am writing to you in relation with a problem that involves my career and my future. Through this communication, I want to convey to you the amount of problems that I and my family have been engrossed in for a quite long time now. My thirst for acquiring education at the alma mater is one that will never cease to be filled. I want to learn more and thus contribute to the society in a better manner and it is only possible if I am given a chance of a lifetime. My humble request is to you to understand that I and my whole family has been stuck in deep financial problems for a long period of time. My father shifted to Canada some time back and after that we... To Whom It...
3 Pages(750 words)Essay

Document analysis

...” makes the logic of the decision seem purely gender-based, and does not consider the fact that pay inequities exist in fields that have been traditionally occupied by women but now are socially open to both women and men. Administrative assistance, teaching, and nursing are historically underpaid positions and historically female; this paragraph implies that we are seeking equitable pay based only on biological differences, not on the quality or purpose of work, and does nothing to recognize that this field-based discrimination grew from a gender-based discrimination. While addressing the symptom, the decision does not address the problem. The document is progressive in the sense that it...
11 Pages(2750 words)Essay

Document Comentary

...Document Commentary Brief outline of Document content The document is the script of the speech delivered by HRH Prince Abdullah bin Abdulaziz during the 22nd Summit of the Gulf Cooperation Council meeting in Muscat (Oman) on December 30, 2001. The Gulf Cooperation Council (GCC) aims to strengthen the levels of cooperation amongst the Gulf nations while trying to forge a united alliance to face challenges from elsewhere. 2. Context in which the document originates For the past many years, the world is experiencing heightened activities of terrorist activities. Most of such terror acts find their base in the Islamic world. Jihad is the name given to such acts by the...
6 Pages(1500 words)Essay

Proposal document

...Download Problems in the IUPUI Library Computers Administrator, Academia-Research.com 2009-12-14 11:39 Mr. Lewis, David,Dean IUPUI University Library DATE: 10/27/2009 SUBJECT: Download Problems in the IUPUI Library Computers There is no gainsaying the fact that the Internet is today’s repository of knowledge and that easy and unrestricted access thereto is a mandate for any student, irrespective of which academic institution he or she belongs to. Regrettably, students at this institution, the IUPUI University, feel frustrated when trying to access the Internet at the university library to download information. This Paper looks at the whys and wheretofores of this particular problem before... Problems in the...
1 Pages(250 words)Essay

Process Document

...How To Mow A Lawn Many household chores are easy to do when you understand the steps that are involved in doing them. As an example, mowing a lawn is important to keep a lawn looking beautiful all the time. Here are the steps that one should take in mowing a lawn: 1. A lawnmower is very important if you are going to make your lawn look good. The lawnmower you choose will depend on the type of lawn you have and what you want to do with the clippings. There are different types of mowers: hand lawnmowers, gas powered lawnmowers or electric lawnmowers. They have different capacities so it is important to pick one that does what you want it to do. Hand Lawn mower Gas powered lawnmower Electric lawnmower 2. A mower... To Mow A...
4 Pages(1000 words)Research Paper

Document Information

...them more productive. However, purchasing supplies for enforcing good ergonomics can create few expenses for the employers, for example appropriate chairs, stools for the feet etc. Reports and Correspondence Hello XYZ, Welcome to the company! As it is your first week here, I wanted to guide you regarding the different forms of communications that we follow in the organization. The different types of reports and tools for correspondence are explained as follows: Memorandum: A memorandum is a small document that is used internally to communicate certain information amongst all the employees. It is mainly used for the dissemination of important information, gathering suggestions, sending reminders etc. It consists of three...
2 Pages(500 words)Essay

Document Imaging

...Document Imaging Introduction Document imaging concept has become a new trend in recent days. The concept is mostly utilized in business operations. In this research paper, the objective is to demonstrate the concept of document imaging. Apart from this, the research will also highlight the history of document imaging along with its uses in modern days. Moreover, through the research it will be possible to identify the types of technology which has been used in document imaging. Simultaneously, through the study it will be possible to witness how a document imaging concept has evolving in modern civilization. Document...
7 Pages(1750 words)Research Paper

Summarize document

...Every industry is based on a certain policy of management. It depends on the strategies of making decisions that managers choose. In the article by Naresh Khatri and H. Alvin Ng the role of intuition in this process is discussed. It is thought that the most reliable and effective way of strategic planning is using specific formulas and available data. However, intuition or “gut-feeling” (Khatri and Alvin Ng 2000, p. 67), also plays a significant role in decision making. The main idea of the article is that intuition is not a supernatural phenomenon. The authors explain that decisions, made intuitively, are based on previous experience and precedents. Intuition has nothing to do with random guessing, it is a subconscious process... industry is ...
1 Pages(250 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Teaching Document for FREE!

Contact Us