1. Process Technology I: Equipment 14. Boilers
Dennis Zhang

2. Chapter 14. Boilers Objectives
Explain the purpose of boilers in the process industry.
Identify the common types of applications of boilers.
Identify the components of boilers and explain the purpose of each.
Explain the operating principles of boilers.
Identify typical procedures associated with boilers.
Describe the process technician’s role in boiler operation and maintenance.
Identify potential problems associated with boilers.

3. Chapter 14. Boilers Types and applications -- Water tube
components: firebox, refractory lining, radiant tubes, burners (premix, raw gas), pilots, air registers, draft fans, stack, damper, steam drum, economizer, downcomers, riser tubes, superheater,

4. Chapter 14. Boilers -- Waste Heat, Figure 14-7 (Page 274)
-- Fire Tube, Figure 14-8 (Page 275)

5. Chapter 14. Boilers Operation Theory Fire-Tube Boiler Operation

6. Chapter 14. Boilers -- Water circulation, Figure 14-10 (Page 276)
-- Superheated steam
-- Desuperheated steam: driving turbines, catalytic cracking, product
stripping, maintenance, producing steam

7. Chapter 14. Boilers (cont.)
-- Boiler feedwater
Water treatment methods
-- deaeration,
-- coagulation
-- filtration
-- softening
-- demineralization
-- reverse osmosis
Burner fuel
Potential problems: Table 14-1 (Page 279)
-- contributing factors
-- equipment age and design
-- water and other contaminants
-- external factors

8. Chapter 14. Boilers (cont.)
Safety and Environmental Hazards: Table 14-2 (Page 280)
-- NOx and smoke emissions
-- Fire protection and prevention
-- Hazardous operating conditions
-- Personal safety
Typical procedures
-- Startup
-- Shutdown
-- Emergency
-- Lockout/Tagout maintenance
Technician’s role: Table 14-3 (Page 282)

9. Chapter 14. Boilers (cont.)
Steam System Symbols