Custom Tray Deaerator

Corrosion in boiler cycles is caused by the presence of non-condensable gases such as oxygen and carbon dioxide in the boiler feed water. In order to remove the non-condensable gases, the feedwater is heated and vigorously scrubbed by a counter current flow of steam.

The incoming undeaerated water enters the deaerator though spring-loaded, stainless steel spray valves. These variable orifice valves produce a fine spray in a uniform pattern from 5% to 200% of design. The fine droplets of water maximize the surface area in contact with steam, raising the temperature to within a few degrees of saturation temperature and instantly releasing the majority of the corrosive, non-condensable gases.

The preheated and partially deaerated water flows through the tray stack where the hottest, purest steam vigorously scrubs the water to heat it to saturation temperature and strips the last traces of dissolved gases. Kansas City Deaerator Company trays are among the heaviest in the industry, fabricated of 16 gauge, type 430 stainless steel.

The entire deaeration process takes place in a stainless steel enclosure that eliminates any need for vessel lining or cladding and ensures a long life with little maintenance.

Features

Two stage deaeration with counterflow operation
Quiet operation
Rugged design with “Central Station” durability
Oxygen removal to 0.005 cc/liter (7ppb) per HEI
Replacement heater to mount on existing storage vessels
Custom units designed to meet specific needs
DS Units up to 800,000 #/hr
HH Units up to 16,000,000 #/hr
Guaranteed performance over wide load swings
Vacuum units
Options:
- Accessory Package
- Accessory Piping
- BF Pump Package
- Heat Exchange Institute (HEI) Design
Integral units per ASME Section I

Download complete Custom specifications PDF

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PROJECT
NO. UNITS
ARRANGEMENT
SPACE LIMITATIONS

PERFORMANCE REQUIREMENTS
	FLOW	TEMP	ENTHALPY	PRESSURE
DESIGN	#/HR	DEG. F	BTU/LB	PSIG
DELIVERED CAPACITY
WATER INLET
MAKEUP
LP CONDENSATE
HP CONDENSATE
STEAM
VENT RATE (% of Steam Inlet)	0.5
EFFLUENT O2 (cc/l)	0.005
EFFLUENT CO2 (ppb)	0
Storage Tank Cap. @ OF (gal)

TECHNICAL REQUIREMENTS
DESIGN		CONNECTIONS	SIZE	RATING
ASME CODE LATEST EDITION	SECTION VIII, DIV. 1	FEEDWATER INLET
HEI LATEST EDITION	REQ’D	STEAM INLET
DESIGN PRESSURE (psig)		RELIEF VALVE
VACUUM		THERMOMETER
DESIGN TEMPERATURE (F)		PRESSURE GAUGE
SHELL THICKNESS		VENT
HEAD THICKNESS		HEATER MANWAY
TYPE HEADS (F&D/2:1)		HP RETURNS
CORROSION ALLOWANCE	0.025 INCH	BFP RECIRC
VACUUM RINGS		BFP SUCTION
RADIOGRAPHY: HEAD & SHELL	RT-2 MINIMUM	OXYGEN SAMPLE
MAG. PARTICLE INSPECTION	INTERNAL NOZZLES	STORAGE MANWAY
LIQUID DYE PENETRANT	SS NOZZLES	OVERFLOW
POST WELD HEAT TREATMENT	REQ’D	LEVEL CONTROL
CONNECTIONS		GAUGE GLASS
		CHEMICAL FEED
>2 INCH		DRAIN

MATERIALS OF CONSTRUCTION
SHELL	SA516-70	SUPPORTS	SA-516-70
HEADER	SCH 10, 304L S.S. min	BAFFLES	304L SS
TRAYS	16 ga, 430 S.S.	NOZZLES	A 106 gr. B
SPRAY VALVES	316 S.S.	FLANGES	SA 105
TRAY ENCLOSURE	1/8″ 304L S.S. MIN
VENT CONDENSER	1/8″ 304L S.S. MIN

ACCESSORIES
	FLOW (LBS/HR)	PRESSURE (psig)
Inlet Valve (specify one)			Thermometer (2)
Mechanical Control			Pressure Gauge
Pneumatic Control			Vent Valve/Orifice
Electronic Control
Steam PRV (specify one)			Overflow Valve
Pneumatic Control			Level Switch (2)
Electronic Control			Gauge Glass (specify one)
Relief Valve			– Red Line Pyrex
Sentinel			– Reflex
Specified capacity			– Magnetic
NOTE: Marked items are to be supplied by Vendor

Accessories

ITEM	DESCRIPTION	ACC PKG	PUMP PKG
A	WATER INLET
A1	Inlet Valve
	Mechanical	STD	STD
	Pneumatic	OPT	OPT
A2	Level Controller	STD	STD
	Level Transmitter	OPT	OPT
A3	Inlet Valve Bypass Valves	OPT	STD
A4	Inlet Valve Bypass Piping	OPT	STD
A5	Inlet Valve Bypass Strainer	OPT	STD
B	STEAM CONTROL
B1	Steam PRV		OPT
	Self Contained	OPT	OPT
	Pneumatic	OPT	OPT
B2	Steam PRV Controller	OPT	OPT
B3	Steam PRV Bypass Valves	OPT	OPT
B4	Steam PRV Bypass Piping	OPT	OPT
B5	Steam PRV Bypass Strainer	OPT	OPT
C	RELIEF VALVE
C1	Relief Valve
	Sentinel	STD	STD
	Full	OPT	OPT
C2	Relief Valve Exhaust Piping	OPT	OPT
D	THERMOMETER
D1	(2) 5″ Thermometer w/ss wells	STD	STD
E	PRESSURE GAUGE
E1	(1) 4 1/2″ Pressure Gauge	STD	STD
E2	Siphon & Cock	STD	STD
E3	Pressure Transmitter	OPT	OPT
F	VENT
F1	Vent Valve	STD	STD
F2	Vent Orifice w/ Flange	OPT	OPT
F3	Vent Bypass Valves	OPT	OPT
F4	Vent Bypass Piping	OPT	OPT
H	VACUUM BREAKER
H1	Vacuum Breaker	STD	STD

ITEM	DESCRIPTION	ACC PKG	PUMP PKG
M	BFP RECIRC
M1	BFP Recirc Shutoff	N/A	OPT
M2	BFP Recirc Check	N/A	OPT
M3	BFP Recirc Orifice	N/A	OPT
	BFP Recirc ARC Valve	N/A	OPT
M4	BFP Recirc Piping	N/A	OPT
M5	BFP Recirc Pressure Gauge	N/A	OPT
N	BFP SUCTION
N1	BF Pumps
	(2) 100% Capacity	N/A	STD
	(3) 50% Capacity	N/A	OPT
	Motors
	ODP	N/A	STD
	TEFC	N/A	OPT
N2	BFP Suction Isolation Valve	N/A	STD
N3	BFP Suction Strainer	N/A	STD
N4	BFP Suction Piping	N/A	STD
N5	BFP Suction Expansion Joint	N/A	STD
N6	BFP Discharge Pressure Gauge	N/A	OPT
N7	BFP Discharge Check Valve	N/A	OPT
N8	BFP Discharge Isolation Valve	N/A	OPT
O	CHEMICAL FEED
O	Chemical Feed Quill	OPT	OPT
Q	OVERFLOW
Q1	Overflow Valve/Trap	STD	STD
Q3	Overflow Piping	OPT	STD
R	LEVEL SWITCHES
R1	Level Switches
	High and Low (TWO)	STD	STD
	High High (ADDITIONAL)	OPT	OPT
R2	Level Switch Bridle Piping	OPT	OPT
S	GAUGE GLASS
S1	Gauge Glass
	Red Line Pyrex	STD	STD
	Reflex	OPT	OPT
	Magnetic	OPT	OPT
S2	Gauge Glass Bridle	OPT	STD