Last updated:
Thursday, 09 February 2012

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Tray Type Pressurized Deaerator

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Features

  • tray-type-lg.jpgCOUNTER FLOW TRAY design deaerator provides guaranteed removal of all dissolved oxygen in excess of .005 cc/liter from 5% to 100% of deaerator capacity.
  • ELECTRONIC INSTRUMENTATION FOR MODULATING DEAERATOR LEVEL control includes a HART compatible differential pressure transmitter, PID controller, and motorized control valve.
  • MULTIPLE DEAERATOR CONFIGURATIONS: vertical single tank, standard "tank car" type, or flanged heater section, all providing the same high quality deaeration.
  • ONLY STAINLESS STEEL components come in contact with undeaerated water. Deaerator trays and tray box are all stainless steel.
  • A.S.M.E. Code and National Board stamped receivers - 50 psi. Standard vessel options include stress relieving, non-destructive testing and full vacuum.
  • CUSTOM ENGINEERED PACKAGED DEAERATOR SYSTEM includes boiler feedwater pumps and quality components to insure reliable service.

Advantages

  • Counter Flow Tray type deaerators are capable of accepting high percentages of condensate returns without adverse effects on performance. This is possible because the deaeration process does not require a flow of steam for scrubbing. All second stage scrubbing is done by the cascading process through the trays. The counter flow design provides maximum performance because the cleanest incoming steam contacts the water that requires final deaeration, thus stripping out the last traces of oxygen.
  • GUARANTEED DEAERATOR PERFORMANCE from 5% to 100% of load standard sizes ranging from 6,900 lbs/hr to 300,000 lbs/hr (up to 1,000,000 #/hr upon request)
  • CUSTOM ENGINEERED PACKAGED DEAERATOR SYSTEM results in a small foot print, minimal onsite installation costs, and a single source of responsibility for all major components.

Operation

Makeup water and pumped returns are sprayed into the deaerator tray section through a stainless steel spray nozzle. The spray nozzle provides a thin conical sheet of water that condenses the vapors while permitting oxygen to exit through the vent. The partially deaerated water then begins to cascade through the trays.

The combined makeup and pumped returns are heated with steam that flows upward through the stainless steel trays. The steam vigorously scrubs the dissolved oxygen from the makeup and pumped returns. The trapped returns enter the deaerator storage section. Steam from the returns also flows upward through the deaerator trays, while the water drops to the water level in the deaerator storage section.

The fully deaerated water remains in the deaerator storage section for use by the boiler, while the excess steam flows into the deaerator tray section. Non-condensable gases enter the vent and pass to the atmosphere.

MODEL NUMBERRATED CAPACITYRECEIVER SIZE Tank Diameter x Overall LengthHEATER SECTIONSYSTEM CAPACITY TO OVERFLOWAPPROXIMATE OVERALL DIMENSIONS, in.APPROXIMATE WEIGHT, lbs.
LBS/HRHPO.D.GALS.MINS.HT*LW**SHIPPINGOPERATINGFLOODED
2ST5
4ST5		6,900
13,600		200
400		42" x 48" v
48" x 72" v		24"
24"		264
585		18.9
20.8		124
152		78
98		50
56		1,850
3,270		4,250
8,150		5,850
10,435
6ST5
8ST5
10ST5
12ST5		20,700
27,600
34,500
41,400		600
800
1000
1200		48" x 96" v
48" x 96" v
48" x 96"
60" x 72"		36"
36"
42"
42"		755
755
755
935		17.9
13.4
10.9
11.2		152
156
156
169		122
122
122
104		56
56
56
68		3,875
3,915
3,925
5,130		10,175
10,215
10,225
12,930		12,610
12,650
12,660
17,410
15ST5
18ST5
21ST5
24ST5		51,750
62,100
72,450
82,800		1500
1800
2100
2400		60" x 96"
60" x 96"
72" x 96"
72" x 96"		42"
48"
48"
54"		1,200
1,200
1,780
1,780		11.4
9.5
12.1
10.6		169
169
182
182		128
128
132
132		68
68
80
80		5,845
5,885
6,995
6,995		15,855
15,895
21,840
21,840		20,560
20,600
28,055
28,055
30ST5
36ST5
45ST5
60ST5		100,000
125,000
150,000
200,000		3,000
3,600
4,500
6,000		72" x 120"
84" x 144"
84" x 144"
84" x 192"		60"
66"
72"
72"		2,160
3,515
3,515
4,400		10.3
13.9
11.2
11		184
198
198
222		156
186
186
186		80
92
92
92		8,030
11,325
11,420
12,500		26,045
40,640
40,735
44,100		33,550
50,860
50,955
66,533
75ST5
90ST5		250,000
300,000		7,500
9,000		96" x 240"
96" x 288"		84"
84"		5,175
6,750		10.4
11.3		240
246		280
328		98
108		16,600
18,700		58,600
60,700		78,358
80,458

 

  1. Water Level Indicator
  2. Pressure Transmitter
  3. Differential Pressure Transmitter(Level)
  4. Pressure Controller
  5. Pressure Control Valve
  6. Make-Up Nozzles
  7. Make-Up Controller
  8. Make-Up Control Valve
  9. Boiler Feed Pump Motor
  10. Boiler Feed Pump
  11. Starter
  12. Control Panel (Nema1)
  13. Gate Valve (Drain)
  1. Gate Valve (Vent)
  2. Safety Relief Valve
  3. Sentinal Relief Valve
  4. Y-Strainer (Make-Up)
  5. Gate Valve (Make-Up)
  6. Globe Valve (Make-Up)
  7. Overflow Trap
  8. Pressure Gauge W/Cock
  9. Temperature Gauge W/Thermometer
  10. Low Water Alarm & Cut Off Switch
  11. High Water Alarm Switch
  12. High Water Alarm Switch
  13. Recirculation Orifice Union
  1. Recirculation Gate Valve
  2. Recirculation Check Valve
  3. Stainless Steel Tray Assembly
  4. Gate Valve (Water Column Drain)
  5. Gate Valve (Water Column Isolation)
  6. Pump Suction Coupling
  7. Pump Suction Gate Valve
  8. Magnesium Anode
  9. 18" Diameter Manway
  10. Chemical Feed Quill
  11. Y-Strainer (Steam)
  12. Pumped Return
  13. 12x16 Manway