UNIVERSITI TUNKU ABDUL RAHMAN

Faculty : Faculty of Engineering & Science Unit Code : UEMK4353 Course : BEng (Hons) Chemical Engineering Unit Title : Process and Plant Design II

Assignment Mechanical Design and Drawing

This is an individual assignment. Each student has to select one equipment from the list below and prepare a mechanical drawing of that equipment.

separator / knock-out drum / scrubber distillation column / absorber / extractor heat exchanger

1. Diameter and Height of Vessel and Nozzle Sizing For Gas/Liquid Separator: assume is vertical separator with wiremesh demister. Refer to PTS

31.22.05.11 Section 3.3 for calculations. For 3-phase Separator: assume is horizontal open three-phase settler with boot. Refer to PTS

31.22.05.12 Section 4.1 for calculations. For Column / Absorber / Extractor: Refer to book Seider, Seader & Lewin: Product &

Process Design Principles or Douglas: Conceptual Design of Chemical Processes for diameter and height calculations. For nozzle sizing, refer to PTS 31.22.05.11 Appendix II for calculations.

For Heat Exchanger: Refer to book Seider, Seader & Lewin: Product & Process Design Principles for diameter and length sizing. For nozzle sizing, refer to Heat Exchanger Nozzle Sizing document.

2. Shell and Head Thickness The stress value, S depends on the material used. Refer to List of Material Specification (Page 2 of ANSI B16.5 P-T Ratings document) for

the ASTM steel grade of your material.

3. Pressure Rating for Nozzle and Pipe Neck Refer to ANSI B16.5 P-T Ratings document to determine the rating for the nozzles (150#,

300# etc.) Use welding neck flange (Figure 1) and determine the pipe schedule.

Figure 1: Details of Welding Neck Flange: (1) Weld Neck Flange, (2) Butt Weld, (3) Nozzle Neck (Pipe)

1. The drawing must be to scale. 2. Use the AutoCad template (with UTAR title block) to prepare the drawing. 3. Update the information in the drawing template. Equipment number and description must be

included in the drawing title. 4. Include Design Data and Nozzle Data tables into drawing. Different equipment (separator,

column, heat exchanger etc.) will have different data requirements. Refer to Drawing Samples for Mech powerpoint file for more information.

Compile all the calculations into a report and submit as a group. Use the attached report template. Report must be computer typewritten using word processor and printed preferably double sided. Separate the drawings and report. Drawings in A4 size.

For binding: Three (3) staples on left-hand side of report (plastic cover, masking tape and comb-binding are NOT required)

One hardcopy report and drawings submit to Ms Teoh Hui Chiehs pigeon hole (SA Block, 5th Floor).

Zipped up the softcopy report + AutoCad files and email to teohhc@utar.edu.my with email subject UEMK4353 Assignment-Group XX

Determine the dimension of the flange: Refer to document ANSI B16.5 WN Flange

Determine the pipe schedule and nozzle neck thickness: Refer to document Nozzle Neck Thickness (can also refer to Pipe Schedule Chart for pipe thickness once the pipe schedule is determined)