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Blowdown Equipment

Atmospheric Boiler Feed SystemsWhen a boiler is generating steam, the feedwater continuously carries dissolved mineral matter into the unit. To prevent an excessive accumulation of dissolved and undissolved solids which interfere with proper boiler operation, a blowdown program should be established. Blowdown separators take water from the boiler during blowdown and reduce it to atmospheric pressure for disposal. Blowdown heat recovery systems recover up to 90% of the heat energy that would otherwise be lost down the drain. The recovered heat is used to pre-heat boiler make-up water before it enters the deaerator, and for low pressure steam to heat water inside the deaerator, which reduces the cost to run the deaerator and improves overall boiler efficiency.

PHOTOS
Bottom Blowdown Receiver w/o Heat Recovery or After Cooler

Boiler Feed Water Tank Cut Out

Stand Alone Blowdown Diagram
*Mouseover the numbers below to view more information.

Balloon # Description
1 Flash Vessel 150 PSIG ASME w/ S.S.Wearplate 270 degrees
2 Safety Type Sight Glass Assembly
3 Swing Check Valve
4 Temperature Regulating Valve
5 Wye Strainer
6 Coolant Water Isolation Valve
7 3 Inch Temperature Guage
8 Vessel Isolation Valve

 


PRODUCT MEASUREMENTS

 
Dimension (in inches)
Model
A
B
C
D
BBD6
6
18
48
44
BBD12
8
24
54
46
BBD18
10
30
60
48
BBD35
14
42
76
52
BBD55
18
54
88
56
BBD85 22 66 100 60
BBD120 26 78 116 64  
BBD155 30 90 128 68  

 

Typical Continuous Surface Blowdown Heat Recovery Cut Away
Typical Continuous Surface Blowdown Heat Recovery Diagram

 

Balloon # Description
1 Flash Vessel 150 PSIG ASME w/ S.S. Wearplate 270 degrees
2 Brazed Plate Heat Exchanger
3 4 Inch Channel Base Platform With 3/16 Inch Deck
4 Steam Trap
5 Sec VIII Sentinel Warning Valve (Optional)
6 Thermometer (Optional)
7 Safety Type Sight Glass Assembly (Optional)

 

PRODUCT MEASUREMENTS
 
Dimension (in inches)
Model
A
B
C
D
E
F
G
BDH5
6
22
20
63
18
9
63
BDH10
8
26
22
68
24
12
69
BDH20
12
30
28
81
36
18
81

BDH25

12
30
28
81
36
18
81
BDH40
16
38
34
93
48
24
93
BDH50 18 42 36 98 54 27
99
BDH75 22 52 40 110 66 33
110
BDH100 24 62 42 116 72 36
117
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