From Practical Batch Process Management

5.1 Introduction

Every batch plant has recipes for the products it produces. Every product recipe consists of a header, equipment requirements, formula and procedures. For example, let us consider a recipe of a cake mix. The recipe header identifies the product as, say chocolate cake. The equipment requirements identify the required processing equipment for making the cake. For the cake mix, the equipment requirements are detailed on the pack, say a large bowl, a mixer, a cake pan, etc. The formula defines the ingredients, such as 1 pack of chocolate cake mix, 2 eggs, 150 ml water, 50 ml edible oil, etc. The procedure defines the processing actions and sequence of execution. For making chocolate cake, first pre-heat the oven to 350 C, mix eggs with water and oil, add cake mix and blend until smooth, pour into cake pan and bake in oven for 45 min.

Every product produced in a batch plant has a recipe consisting of similar components. For some products, these components may not be obvious, but they do exist. For example, a recipe may be on a piece of paper that the operator uses to produce the batch. The recipe header and formula are defined on the paper. The equipment requirements and procedure is implied, e.g. blend all ingredients together in a blender. In a more automated process that has a control system, the formula values and procedure may be fixed in that control system. In some plants, the products to be produced have the...

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Products & Services
ANSI Roller Chain Sprockets
Roller chain sprockets engage chain drives in power transmission and conveyor systems, though sprockets can engage any perforated material. Chain drives can be highly efficient and can produce a mechanical advantage as speed reducers/increasers. Sprockets conforming to ANSI standard B 29.1 are not meant to engage roller chains of any other parameter. ANSI conforming roller chain is smaller and somewhat weaker than its European counterpart.
ISO Roller Chain Sprockets

Roller chain sprockets engage chain drives in power transmission and conveyor systems, though sprockets can engage any perforated material. Chain drives can produce a mechanical advantage as speed reducers/increasers. ISO sprockets are designed to engage British Standard Chain and conform to ISO standard R606. These sprockets are not interchangable with ANSI defined sprockets.

Gearboxes and Gearheads
Gearboxes and gearheads, also called gear reducers or speed reducers, are power transmission devices that use a gear arrangement in an enclosed housing to transfer energy, increase torque and reduce speed from one device to another. Gearboxes may also be referred to as gear reducers or speed reducers.
Ball Splines
Ball splines provide nearly friction-free linear motion while simultaneously transmitting torsional loads. The path of the bearing balls is straight, not helical, which allows for a very efficient coupling device suitable for a variety of applications.
Adjustable Speed Drives
Adjustable speed drives alter the speed of a driven shaft to a speed selected by an operator.

Topics of Interest

6.1 Introduction One of the main objectives of batch process automation is to manufacture a batch in optimum (minimum) time and to maximize the capacity utilization of the batch manufacturing...

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Most journeyman mechanics will already know this, but for the less experienced journeymen and apprentices, those assemblies of (usually metallic and composite) components called couplings are a really...

Overview Couplings in most turbomachines attach the driver to the driven piece of machinery. High-performance flexible couplings used in turbomachines must perform three major functions: (1)...

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