Suggested report items cstr draft 1 compare the conversion in each reactor predicted by your model to what you measured in lab. The pilot trials are required to select a reactor on a small scale. Continuous stirred tank reactor cstr was used to conduct pilot scale experiment on the reaction of sodium hydroxide and ethyl acetate. As for this experiment a continuous stirred tank reactor,cstr model. The information provided in a lab report is specific enough that the reader gets a clear picture of the experiment carried out by the researcher. This experiment was designed to provide experience in preparing compounds using a twostep synthetic scheme. The volume of a cstr can be represented as the shaded areas in the levenspiel plot shown below. Our experiment involves a continuous stirred tank reactor cstr in series.
The reaction the reaction selected in this experiment is the saponification of ethyl acetate. Our system consists of 3 agitated, glass reactor vessels in series. The objectives for this experiment are to determine the effect of residence time onto the reaction extent of conversion and to determine the reaction of rate. These are screen shots on a mac, the appearance on a windows pc is very similar. How to write a lab report format, tips and examples. Che244 lab report effect of temperature on the reaction in a cstr 2015. Effect of operating conditions on cstr performance. The cstr that connected in series, the exit stream of one reactor is the feed stream for another reactor.
Figure 1 crosssectional diagram of continuous stirredtank reactor as for this experiment a continuous stirred tank reactor, cstr model. The reactor system consists of three agitated, glass reactor vessels in series. Lab reports learning centre the perfect lab report this handout is meant to provide an example of a good quality lab report, showing what type of things should be covered in each section, and an appropriate writing style for lab reports. View lab report lab 1 cstr in series from chemical 574 at 3il engineer school, rodez. Pdf a simple and versatile laboratory scale cstr for. In chemical engineering the name cstr is often used to refer to an idealised agitated tank reactor used to model operation variables required to attain a specified output. Experiment 3 saponification of ethyl acetate and sodium. This is a template to help prepare you for completing these lab reports. Characteristic curves for various flows principles of chemical reaction engineering the effort to quantify nonideal departures in chemical reactors leads to treat two main nonideal models, the dispersion model, and the cstr in series model. Theoretical and experimental analysis of cstrs in series.
Cstr, cstr in series, saponification, and conversion. Analytical chemistry lab reports format and calculations. Barnstead epure laboratory water, barnsteadthermolyne, dubuque, ia and the solution was introduced into the first cstr as a single. How to write a scientific laboratory report before you begin your lab report confirm your data with the lab instructor or your lab partner before you begin to write your report. Chemical engineering laboratory cheg 47w49w reaction kinetics saponification of isopropyl acetate with sodium hydroxide objective. Lab cstr in series chemical reactor purified water. Abstract in this experiment, a continuous stirred tank reactor cstr in series are used to determine the concentration response to a step change and pulse input. A lab report is nonetheless a detailed account of an experiment along with the results found. This constant represents the number of substrate molecules that can be converted to product by a single enzyme molecule per unit time usually. In this experiment sodium hydroxide and ethyl acetate react in continuous stirred tank reactor. In the report you shall discuss the rtd and aspects of the observed flow through the reactor, also with respect to different pump rates, tracer concentrations and compared to an ideal pfr. The main purpose of this experiment is to select a reactor from a batch reactor, cstr, and pfr, for industrial use by comparing the efficiency and operational costs of each to achieve 90% conversion of the ethyl acetate waste stream. For data evaluation and report writing, make a copy of the lab journal after your experiment. Continuous stirred tank reactor cstr is the most generally employed bioreactor for biohydrogen production in continuous mode because of its simplicity in configuration, easy functioning, efficient uniform stirring, and proper maintenance of temperature and ph fig.
Ene 806 project report theoretical and experimental analysis of cstrs in series. Check your lab manual or unit guide to determine which referencing style is preferred. In different applications of cstrs, the performance can be monitored by tracer studies. Initially the experimental setup is described in terms of programmable logic controller plc hardware, laboratory apparatus and software. Example of working a quiz d1l1 batch quiz reactor lab. Lab report as part of my module nip1002 i was required to perform a set of observational skills which included. The reference list is a separate section that comes after your conclusion and before any appendices. Although the concentration is uniform for each reactor but there is a change in concentration as fluids move over from reactor to reactor. View lab report 268603675cstrlabreport from chemistry 20203 at university of kuala lumpur. Residence time distribution rtd function, et for continuous stirred tank reactor is study in the experiment using solteq bp107 continuous stirred tank reactors in series with step change input as the method of injection of tracer. You may discuss the experiment with your lab partner and other classmates, but the lab report that you turn in must be your own work. It is studied using the computational fluid dynamics cfd simulation software ansys fluent. A comparative kinetic study in a batch reactor a thesis submitted to the university of khartoum in partial fulfillment of the requirement for the degree of. Know it all report 1 synthesis of benzopinacolone from benzophenone.
The parameters considered for analysis are temperature, feed flow rate, residence time, volume of reactor and stirrer rate. Check with your instructor or in your lab manual to make sure you are using the correct format for your class. Lab report on the electric conductivity 923 words bartleby. The lab journal in this experiment is a hardcover log book that will be present at the setup. Batch and continuous stirred tank reactor experiments. Could your friend or your boss read the report and understand exactly what you did. A comparative study of saponification reaction has been conducted in a continuous stirred tank reactor cstr and plug flow reactor pfr.
It is usually referred to as the continuousstirred tank reactor cstr or backmix reactor, and is used primarily for liquid phase reactions. The objective of this lab is to learn the process of enumeration to determine the number of microorganisms in a sample. F the hydrolysis of tertbutyl chloride in a continuously stirred ankt reactor cstr was examined. Cheg 3128 chemical engineering junior laboratory spring 2017. Ene 806 project report theoretical and experimental analysis of. Abstract this experiment involves a continuous stirred tank reactor cstr in series. A lab report is a presentation of original findings from a laboratory experiment or assignment. By studying the saponification reaction of ethyl acetate and sodium hydroxide to form sodium acetate in a batch and in continuous stirred tank reactor, the students can evaluate the rate data needed to design a production scale reactor. Abstract this experiment was conducted to study the effect of step change input to the concentration with the. A comparative study of saponification reaction in a pfr and cstr. The present report documents the adiabatic cstr experimental setup after it was refurbished in september 2017. The purpose of this experiment is to examine and determine the reaction kinetics of a simple homogenous liquidphase system and to model this reaction in a continuously stirredtank reactor cstr.
Given r a as a function of conversion, r a fx, one can also design any sequence of reactors in series provided there are no side streams by defining the overall conversion at any point. The flow rate was controlled with a valve installed at the. The enormous catalytic activity of enzymes can perhaps best be expressed by a constant, k cat, that is variously referred to as the turnover rate, turnover frequency or turnover number. The experiment is to carry out a saponification reaction between naoh and etac in continuous stirred tank reactor or commonly known as cstr. The cstr can run as single reactor and also in series. Changing organizational structures, rising energy cost, growing awareness on production techniques, and time based competition are further expected to accelerate the demand for cstr globally. Cstr and pfr are probably the two most widelyaccepted reactor regimes used for water. Study in startup dynamics of a continuous stirred tank reactor cstr background a type of reactor commonly used in industrial processing is the stirred tank operated continuously. Reactants are continuously introduced into the reactor, while products are continuously removed. The parts of a laboratory report nc state university.
The flow behaviour of fluid inside the reactor may either change from dispersion to ideal or ideal to dispersion mixing state. Any chemical process may be broken down into a sequence of one or more singlestep processes known either as elementary processes, elementary reactions, or elementary steps. The aim of this study is to investigate themathematical analysis on functions response in a continuous stirred tank reactor. Department of chemical engineering jeppiaar nagar, chennai 119.
A lab report has many parts from the title page, abstract, introduction, methodology, and conclusions. The parameters assumed for analysis are the flow rate is. Cstr consists of a stirred tank that has a feed stream and discharge stream. This way, the reaction mechanisms in cstrs can be comprehended in a better way by studying the effect of the number of reactors used to carry out a specific reaction. Than the deionised water from the tank two are flow through to fill up the three reactors. Continuous stirred tank reactors visual encyclopedia of. Pdf a universal multistage cascade cstr has been developed which is suitable for a wide range of. Abstract the experiment is to study the effect of temperature and reaction time and to determine the relationship between reaction rate with. The aim of this study is to investigate the influence of operating conditions on the conversion and specific rate constant. Cheg 3128 chemical engineering junior laboratory spring. At you will be writing a full lab report for this enzyme experiment. Pdf che506 lab report on continuous stirred tank reactor in. Lab reports are subject to all the rules governing academic honesty. The object of the experiment is to study the dynamics of a cstr during different stages of its continuous operation by using the saponification of ethyl acetate reaction.
Effect of temperature on amylase activity lab report pdf. Sample lab report joe student august 19, 2010 organic chemistry laboratory i chem 32601 instructor. Could you read the report a month later and repeat the experiment and get the same results. In your final report, use reactormixing models to fit the results you have obtained from measurements of the residence time distribution. Use your best mixing model and the reaction kinetics to predict the real reactor conversion and compare it to the ideal cstr reactor conversion. However, if you are designing a lab report without any help. Using report templates in pdf you can be guaranteed that you will miss out on anything that is very important.
This needs to be presented in an organized manner with all the segments in place. When you are asked to write a lab report for a science. These findings are categorized into multiple sections following a format that reflects the rationality of a scientific hypothesis. The reactor system consists of three agitated, glass reactor vessels in. Objective statement what were the main goals of the lab and how did your team try to achieve them 14 page c. Be careful when handling hot glassware and apparatus in the lab. The due date for this report is 14 days after your team runs the cstr ii lab. Firstly the deionised water are filled in the both two tanks with the sodium chloride are being diluted in the tank one.
Experimental determination of kinetic rate constants using. Both of reactants feed to the reactor at equimolar. Ballut in this experiment, the use of both a batch reactor and a cstr will be demonstrated to generate data for the determination of kinetic parameters. After starting the reactor lab application, you will go to the reactor lab directory. The primary job of any scientific introduction is to establish the purpose for doing the experiment that is to be reported. Continuous stirredtank reactors cstrs are open systems, where material is free to enter or exit the system, that operate on a steadystate basis, where the conditions in the reactor dont change with time. The flow measuring apparatus is used to familiarize the students with typical methods of flow measurement of an incompressible fluid and, at the same time demonstrate applications of the. Experimental determination of kinetic rate constants using batch and cstr reactors dr. The cstr that connected in series, the exit stream of one reactor is the feed. Understanding deviations from ideal reactors is extremely important in the chemical processing industry.
An integrated chemical engineering lab experiment, chem eng education 38, 168 2004. Many scientists begin with writing the results and discussion sections. Theory this should include the derivation of the ideal cstr equation, a. Pdf che506 lab report on continuous stirred tank reactor. Work plan you must read the risk assessment for the experiment, and create a work plan before the lab. Eh2205d syazwina binti azizi 2015635202 siti khairunnisa binti ahmad 2015635236 mohamad thaqif alif bin hussin 2015636684 muhamad afiq. Reaction through three cstr in series submitted by.
Continuous stirred tank reactor cstr lab experiment. Tracer studies in a series system of continuous stirred tank. Frequently, several cstrs in series are employ to improve their conversion and performance reynolds and richards 1996. When intext citations are incorporated into your lab report, you must always have the full citations included in a separate reference list. No student should copy data from anyone who is not his or her lab partner. Continuous stirred tank reactor an overview sciencedirect. The font size must be no smaller than 11 point font and no less than single spacing b. Cstr laboratory manual 2017 che3164 reaction engineering. Quantitative chemical analysis, 7th edition by harris. This data will be statistically analyzed to measure the quality of the data.
Approach to steady state in a continuous stirred tank reactor cstr. When you first use the lab, click on the info button at the top of the window to get advice on using the lab. The output of the first tank is the input of the second tank. Abstract the continuous stirred tank reactor cstr is a widely used equipment in chemical related industries. Much theory exists to model the conversion, residence time, reactor size, and other reactor properties based on ideal reactor assumptions, but realistically, those ideal assumptions are invalid outside of theory. Statistical studies of a real continuous stirred tank reactor cstr. What equipment and materials did you need for this lab. The reaction chosen for investigation was hydrolysis of ethyl acetate with sodium hydroxide. Immediately report any spills, accidents, or injuries to lab incharge. Cover page laboratory title, names of team members, date lab was completed, data lab report is submitted. Investigating enzymes effect of temperature on enzyme activity teachers guide this guide is a continuation of the previous laboratory documents. Concentration reduction of naoh using a continuous stirred. The flow rates were chosen to be 32mlmin, 52mlmin and 72mlmin for both the pump settings.
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