You have already been allocated a plant equipment to be designed in detail. Each group member will tackle different equipment and write up an individual report.
It should be noted that the plant equipment design report must be ‘self-contained’ and must contain a table setting out the design basis as calculated in the mass and energy balances in Part-1 report.
The reader/assessor should not need to refer to Part-1 Report to be able to properly assess the detailed design.
Equipment design work involves:
(i) chemical engineering design —selecting the type and sizing of the equipment,
(ii) pipeline system design (including fluid motive devices),
(iii) carrying out specific aspects (explained below) of the mechanical design,
(iv) produce good quality, scaled, engineering drawings showing all the components of the equipment, (v) control of the equipment, and
(vi) cost estimation.
A short-cut design (overall sizing) of auxiliary items, which are integral parts of the main equipment, should also be included. This, however, depends on the type of equipment and the operation being carried out. Examples of awciliary items for some common unit operations are given below: • Distillation column — specification of types and overall sizing of the heat transfer area of the overhead condenser and reboiler. • Reactor, dryer, etc. — heating/cooling system including specification of type and overall sizing of the heat transfer area of the external heat exchanger. Note that design of a heat exchanger (or any heat transfer equipment) as the main equipment requires a detailed design and its performance prediction for clean operating conditions.
For further clarifications on the design of a.iliaty items, contact the Module Leader Pipeline system design: The pipelines (including valves, fittings, and fluid motive devices) connecting the main equipment with the upstream and downstream plant items must be depicted by an isometric drawing and designed. This will involve selection of the standard pipe size (including inner/outer diameters, wall thickness and material of construction) based on the calculated optimum (or economic) pipe diameter, specification of pipe lengths, calculation of pressure drop, and specification of fluid motive devices (i.e., pump, fan, blower or compressor) and estimation of power requirements. Mechanical engineering design of main equipment:
Engineering drawing of main equipment: You are required to produce good quality, scaled, drawings showing all openings/nozzles in their exact positions and the details of the intemals, e.g., baffles, linings, support grids, agitators, plates, etc. These drawing should be of a sufficient standard to allow a professional draughtsman to work them up to produce final drawings from which the equipment could be fabricated.
Control of main equipment: Describe the principal objective of controlling the equipment and an azpriopriate control schemi i.r.mpers need to be measured,
