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Batch processing

Integrate tasks that is, combine operations into unit processes and decide between continuous and batch processing [Pg.73]

Rather than discuss these steps in general, it is probably more helpful to describe them as they are applied to the synthesis of two processes, in this case, the vinyl chloride and tPA processes, which are synthesized in the next subsections. [Pg.73]


The recycling of material is an essential feature of most chemical processes. Therefore, it is necessary to consider the main factors which dictate the recycle structure of a process. We shall start by considering the function of process recycles and restrict consideration to continuous processes. Later the scope will be extended to include batch processes. [Pg.95]

In a batch process, the main steps operate discontinuously. In contrast with a continuous process, a batch process does not deliver its product continuously but in discrete amounts. This means that... [Pg.115]

Figure 4.11 A Gantt or time-event chart of the batch process. Figure 4.11 A Gantt or time-event chart of the batch process.
Example 4.5 Given that a low rate of production is required, convert the continuous process from Example 4.4 into a batch process. Preliminary sizing of the equipment indicates that the duration of the processing steps are given in Table 4.7. ... [Pg.121]

Figure 4.16 Final flowsheet for the production of butadiene sulfone in a batch process. Figure 4.16 Final flowsheet for the production of butadiene sulfone in a batch process.
Batch processes can be synthesized by first synthesizing a continuous process and then converting it to batch operation. The process yield is an important measure of both raw materials efficiency and environmental impact. [Pg.126]

Myriantheos, C. M., Flexihility Targets for Batch Process Design, M.S. thesis. University of Massachusetts, Amherst, 1986. [Pg.127]

Whether parallel operations, larger or smaller items of equipment, and intermediate storage should be used can only be judged on the basis of economic tradeoffs. However, this is still not the complete picture as far as the batch process tradeoffs are concerned. So far the batch size has not been varied. Batch size can be varied as a function of cycle time. Overall, the variables are... [Pg.251]

In batch process optimization, one of the principal objectives is to improve equipment utilization through reduction in dead time. This requires both structural and parameter optimization, with many options available. [Pg.252]

Consider changing from batch to continuous operation. Batch processes, by their very nature, are always at unsteady state and thus are difficult to maintain at optimal conditions. [Pg.290]

On a land site where space and weight are not normally constraints, advantage can be taken of tank type separation equipment such as wash tanks and settling tanks, and batch processing methods. Such equipment is generally cheaper to maintain than continuous throughput vessels, though a combination of both may be required. [Pg.262]

Alternatively, the user can construct ASCII input files manually. The file format includes many numerical flags to control the type of calculation. The researcher should plan on investing some time in learning to use the program in this way. Jaguar can be executed from the command line, making it possible to use batch processing or job queue systems. [Pg.338]

Bechamp batch process Bechamp reaction Beck and Guthke cell Becke line technique... [Pg.94]

Using inorganic salts as precursors, alcohol as the supercritical drying agent, and a batch process a solvent-exchange step was necessary to remove water from the gel. [Pg.3]

Higher alkyl acrylates and alkyl-functional esters are important in copolymer products, in conventional emulsion appHcations for coatings and adhesives, and as reactants in radiation-cured coatings and inks. In general, they are produced in direct or transesterification batch processes (17,101,102) because of their relatively low volume. [Pg.156]

The above batch process has undergone numerous refinements to improve yields, processing characteristics, purity, and storage stabiUty, but it remains the standard method of manufacture for these products. Recentiy a continuous process has been reported by Bayer AG (6) wherein the condensation is carried out in an extmder. The by-products are removed in a degassing zone, and the molten polymer, mixed with stabilizers, is subsequendy cracked to yield raw monomer. [Pg.178]

Compositional control ia suspension systems can be achieved with a corrected batch process. A suspension process has been described where styrene monomer is continuously added until 75—85% conversion, and then the excess acrylonittile monomer is removed by stripping with an iaert gas... [Pg.195]

Industrial-scale adsorption processes can be classified as batch or continuous (53,54). In a batch process, the adsorbent bed is saturated and regenerated in a cychc operation. In a continuous process, a countercurrent staged contact between the adsorbent and the feed and desorbent is estabhshed by either a tme or a simulated recirculation of the adsorbent. [Pg.295]

There are three types of TAP emissions continuous, intermittent, and accidental. Both routine emissions associated with a batch process or a continuous process that is operated only occasionally can be intermittent sources. A dramatic example of an accidental emission was the release of methyl isocyanate [624-83-9] in Bhopal, India. As a result of this accident, the U.S. Congress created Tide III, a free-standing statute included in the Superfund Amendments and Reauthorization Act (SARA) of 1986. Title III provides a mechanism by which the pubHc can be informed of the existence, quantities, and releases of toxic substances, and requires the states to develop plans to respond to accidental releases of these substances. Eurther, it requires anyone releasing specific toxic chemicals above a certain threshold amount to aimuaHy submit a toxic chemical release form to EPA. At present, there are 308 specific chemicals subject to Title III regulation (37). [Pg.374]

Pentaerythritol may be nitrated by a batch process at 15.25°C using concentrated nitric acid in a stainless steel vessel equipped with an agitator and cooling coils to keep the reaction temperature at 15—25°C. The PETN is precipitated in a jacketed diluter by adding sufficient water to the solution to reduce the acid concentration to about 30%. The crystals are vacuum filtered and washed with water followed by washes with water containing a small amount of sodium carbonate and then cold water. The water-wet PETN is dissolved in acetone containing a small amount of sodium carbonate at 50°C and reprecipitated with water the yield is about 95%. Impurities include pentaerythritol trinitrate, dipentaerythritol hexanitrate, and tripentaerythritol acetonitrate. Pentaerythritol tetranitrate is shipped wet in water—alcohol in packing similar to that used for primary explosives. [Pg.15]

In the batch process which finds occasional use, the steps used in the successive nitrations are similar and include acid mixing, addition of the oil, digesting (cooking) the reaction to completion, cooling and settling the mix, and separating the oil from the acid. The nitrators are made of stainless steel... [Pg.17]

Continuous Solvent—Extrusion Process. A schematic for a typical continuous process, widely used for making solvent propellant for cannons, is shown in Figure 7. This continuous process produces ca 1100 metric tons of single-base propellant per month at the U.S. Army Ammunition Plant (Radford, Virginia). Continuous processes have also been developed for double- and triple-base propellants and for stick as well as granular geometries. A principal aspect of these processes has been the extensive use of single- and double-screw extmders instead of the presses used in the batch process. [Pg.44]


See other pages where Batch processing is mentioned: [Pg.115]    [Pg.116]    [Pg.116]    [Pg.116]    [Pg.117]    [Pg.248]    [Pg.279]    [Pg.347]    [Pg.543]    [Pg.3]    [Pg.339]    [Pg.385]    [Pg.168]    [Pg.204]    [Pg.266]    [Pg.301]    [Pg.301]    [Pg.12]    [Pg.12]    [Pg.14]    [Pg.17]    [Pg.18]    [Pg.43]   
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Baseline batch processes

Batch Separation Processes

Batch Versus Continuous Processing

Batch and Continuous Processing

Batch bleaching process machineries

Batch chemical process

Batch chemical processing

Batch cleaning systems process time

Batch continuous processing contrasted

Batch crystallization process control

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Batch hydrogenation processes

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Batch process (bulk suspension

Batch process HAZOP

Batch process automation

Batch process campaign

Batch process control

Batch process control activity model

Batch process control automated

Batch process control automated systems

Batch process control recipe

Batch process control systems

Batch process crystallization

Batch process defined

Batch process distillation

Batch process equipment cleaning

Batch process equipment requirement

Batch process esterification, fatty acid methyl

Batch process filtration

Batch process flowsheet

Batch process formula

Batch process general recipe

Batch process integration

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Batch process plants types

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Batch process standards

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Batch process transesterification, fatty acid

Batch process unit

Batch process units size factor

Batch process, principles

Batch processes

Batch processes

Batch processes Gantt chart

Batch processes advantages

Batch processes antibiotic fermentations

Batch processes beginning

Batch processes conceptual design

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Batch processes cross flow

Batch processes cycle time

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Batch processes equipment utilization

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Batch processes intermediate storage

Batch processes mass balance problem

Batch processes microelectronics manufacture

Batch processes multiple stages

Batch processes optimisation

Batch processes single stage

Batch processes, coloration

Batch processes, coloration (textile

Batch processes, electrophoresis

Batch processes, graphical analysis

Batch processes, nanofiltration

Batch processing metal-catalyzed reactions

Batch processing record

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Batch processing, quality monitoring

Batch processing, quality monitoring during

Batch product-removal process

Batch reaction process safety

Batch reaction process safety approach

Batch reaction process safety chemistry

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Batch reactor process design applications

Batch separations, process design

Batch shell still process

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Batch vs continuous processes

Batch-forming process

Batch-mass processes

Batch/continuous processes

Benefits of Batch Process Simulation

Chemical manufacturing processes batch

Computer batch file processing

Continuous and batch processes

Continuous batch process cooker

Continuous processes batch concepts

Conventional batch process

Cyclic batch processes

Cyclic batch processes examples

Design of Batch Process Units

Detailed Modeling of Single Batch Processes

Electrochemical batch recycle process

Fed-batch Process Development

Fed-batch process

Fed-batch processing

Feeding and Weighing Equipment for a Batch Mixing Process

Fermentation processes batch

Flexible batch, processes, control

Flow Diagram of Batch. Nitroglycerin Process

Gasoline batch processing

Glove batch process

Guidelines for Selecting Batch Processes

Improving batch process productivity

Kerosene batch processing

Labor-intensive batch processing

Labor-intensive batch processing plant

Large Scale Batch Processing of Mini-Modules

Manufacturing processes batch type

Mechanical properties master batch process

Mixing process batch

Model Predictive Control of Batch Processes (SHMPC)

Module large scale batch processing

Monomer batch process, effect

Non-isothermal polymerization in a batch-process reactor

Operational Details of the QUAKER OATS Batch Process

Optimal Design and Scheduling of Batch Processes

Optimisation of batch and semicontinuous processes

Optimization batch processes

Optimization of Batch Processes

Polymerization processes batch

Polystyrene batch suspension process

Precipitation processes semi-batch precipitator

Procedures batch process considerations

Process batch discharge centrifuges

Process design for batch separations

Process semi-batch

Process simulation—batch

Process simulation—batch 800 Subject

Process simulation—batch SUPERPRO DESIGNER

Process simulation—batch distillation

Process simulation—batch equipment models

Process simulation—batch operations

Process simulation—batch recipes

Process, batch integrating

Processes During Batch Melting

Processing, batch continuous

Production batch process

Production of Blends by a Batch Process

Reaction and Separation Systems for Batch Processes - Summary

Reaction, Separation and Recycle Systems for Batch Processes

Reactions three phase batch processes

Reactive processing batch reactors

Recirculation, with batch processing

Reflux condensers, with batch processing

Scheduling batch processes (

Scheduling in batch process

Schematic view of the batch solid state process

Semi-batch processing

Sequential batch process

Simple batch process flow diagram for Products A, B, and

Solid State Batch Microcellular Foaming Process

Solid Sulphur Using Compression and Refrigeration (Batch Process)

Storage in Batch Processes

Structure master batch process

Structure of Batch Processes

Sulfur Batch Processes

Switching from Batch to Continuous Processing for Fine and Intermediate-Scale Chemicals Manufacture

Synthesis of Reaction and Separation Systems for Batch Processes

T. Majozi, Batch Chemical Process Integration. DOI

The Batch Process

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