Baker Hughes FD-1500 User manual

Becker™
Model FD-1500
Filter/Dryer
Instruction Manual (Rev. B)
Baker Hughes Data Classification : Public

ii | Baker Hughes © 2020 Baker Hughes Company. All rights reserved.

Becker Model FD-1500 Filter/Dryer Instruction Manual | iii
© 2020 Baker Hughes Company. All rights reserved.
THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT
PROJECT-SPECIFIC REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/
OPERATOR’S NORMAL OPERATION AND MAINTENANCE PROCEDURES. SINCE
OPERATION AND MAINTENANCE PHILOSOPHIES VARY, BAKER HUGHES (AND
ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE SPECIFIC
PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED
BY THE TYPE OF EQUIPMENT PROVIDED.
THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL
UNDERSTANDING OF THE REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL
AND ELECTRICAL EQUIPMENT IN POTENTIALLY HAZARDOUS ENVIRONMENTS.
THEREFORE, THESE INSTRUCTIONS SHOULD BE INTERPRETED AND APPLIED IN
CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE
SITE AND THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT
AT THE SITE.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN
EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN
CONNECTION WITH INSTALLATION, OPERATION OR MAINTENANCE. SHOULD FURTHER
INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE
NOT COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR’S PURPOSES THE
MATTER SHOULD BE REFERRED TO BAKER HUGHES.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BAKER HUGHES AND THE CUSTOMER/
OPERATORARESTRICTLYLIMITED TOTHOSEEXPRESSLYPROVIDEDINTHECONTRACT
RELATING TO THE SUPPLY OF THE EQUIPMENT. NO ADDITIONAL REPRESENTATIONS
OR WARRANTIES BY BAKER HUGHES REGARDING THE EQUIPMENT OR ITS USE ARE
GIVEN OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO
ASSIST IN THE INSTALLATION, TESTING, OPERATION, AND/OR MAINTENANCE OF THE
EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE
OR IN PART WITHOUT THE WRITTEN APPROVAL OF BAKER HUGHES.

iv | Baker Hughes © 2020 Baker Hughes Company. All rights reserved.

Becker Model FD-1500 Filter/Dryer Instruction Manual | 1
© 2020 Baker Hughes Company. All rights reserved.
Introduction
The Becker Filter/Dryer is a durable unit designed to
provide dry, clean instrumentation gas by removing parti-
cles, free water, and water vapor from natural gas.
The design of the FD-1500 incorporates a replaceable
“Spin on” cartridge inside a carbon steel housing. Gas
enters the unit from the top and continues around the
narrow passageway between the housing and the car-
tridge increasing the velocity of the gas. The gas enters
the cartridge from the bottom resulting in a complete
change in direction of the ow. This change in direction
in gas ow causes the free water to separate from the
gas. A three-inch space between the bottom of the hous-
ing and the cartridge allows for collection of free water.
The gas then enters the replaceable cartridge. The
replacement cartridge has three main components:
1. A primary lter to remove larger particles.
2. 2 Ibs. of silica gel (desiccant) which can absorb 1 lb.
of water vapor and free water.
3. A secondary ne lter with 110 square inches of media
to strain particles as small as 10 microns.
The FD-1500 provides adequate capacity to ow su󰀩-
cient gas for instrumentation. The maximum operating
pressure is 1500 psig (each FD-1500 is hydrostatically
tested to 2250 psig). The ow capacity of the entire unit
is 50 scfm due to the ttings, etc. The capacity of the ne
lter itself at 1500 psig and 10 psid di󰀨erential pressure
is 212 scfm.
The FD-1500 will provide reliable use if the following
replacement procedure for the cartridge is observed.
Technical Assistance
Should you have any questions, please contact your
local Baker Hughes sales representative.
Useful average life for FD-1500 dryer:
It is a good practice to replace or regenerate the desic-
cant once a year.
Warning: It is common practice to check the condition of
the dryer by opening the blow down needle valve provid-
ed at the bottom of the FD-1500. This inspection can only
identify the presence of free water owing with the gas.
If no water is found and the gas appears very dry, it
does not necessarily mean that the desiccant does not
require replacement. The absorption rate of the desic-
cant depends only on the variables in the formula on the
previous page.
The following table is provided to identify if water fall out
has occurred which may cause freezing problems in the
instruments.
T = 1 lb
7 lb./mmscf x 20 scfh
= 7142 hours = 1 year
The Expected Life Of The Desiccant In The Filter/Dryer Replacement Cartridge Model FD-1500
The life cycle of the desiccant depends on the
following factors:
1. The amount of desiccant in the FD-1500
2. The amount of water in the gas
3. The amount of gas owing through the FD-1500
The useful life expectancy of the dryer can be
calculated by the formula:
Where:
T = life cycle (hours)
Wd= desiccant absorption capability (1 lb. for the FD-
1500)
Wq= amount of water in the gas (Ib./mmscf) for commer-
cial grade natural gas, Wq= 7 Ib./1mmscf
Q = gas consumption (scfh)
The last factor Q is the most di󰀩cult to predict, it can
uctuate from zero consumption, as in the case of Becker
monitor control valves to a substantially large number, as
in the case of very active control valves. It is good prac-
tice to use Q = 20 scfh. This value represents a steady
state consumption for many instruments that bleed.
T = Wd
Wqx Q

2 | Baker Hughes © 2020 Baker Hughes Company. All rights reserved.
Table 1 - Equilibrium Moisture Contents of Natural Gases Above the Critical Temperature
PSIA
°F 14.7 100 200 300 400 500 600 700 800 900 1000
-40 9.10 1.50 0.88 0.66 0.55 0.49 0.44 0.41 0.39 0.37 0.36
-36 11.5 1.90 1.10 0.80 0.68 0.59 0.54 0.50 0.47 0.45 0.43
-32 14.4 2.40 1.30 0.99 0.82 0.72 0.65 0.60 0.57 0.54 0.51
-28 17.8 2.90 1.60 1.20 1.00 0.87 0.79 0.72 0.68 0.64 0.61
-24 22.0 3.60 2.00 1.50 1.20 1.10 0.95 0.87 0.81 0.77 0.73
-20 27.0 4.40 2.40 1.80 1.50 1.30 1.10 1.00 0.97 0.92 0.87
-16 33.1 5.40 3.00 2.20 1.80 1.50 1.40 1.20 1.20 1.10 1.00
-12 40.5 6.50 3.60 2.60 2.10 1.80 1.60 1.50 1.40 1.30 1.20
-8 49.3 7.90 4.30 3.10 2.50 2.20 1.90 1.80 1.60 1.50 1.50
-4 59.8 9.50 5.20 3.70 3.00 2.60 2.30 2.10 1.90 1.80 1.70
0 72.1 11.4 6.20 4.50 3.60 3.10 2.70 2.50 2.30 2.10 2.00
4 86.8 13.7 7.40 5.30 4.30 3.60 3.20 2.90 2.70 2.50 2.40
8 104 16.4 8.80 6.30 5.10 4.30 3.80 3.40 3.20 3.00 2.80
12 124 19.5 10.5 7.50 6.00 5.10 4.50 4.00 3.70 3.50 3.30
16 148 23.2 12.4 8.80 7.00 5.90 5.20 4.70 4.30 4.00 3.80
20 176 27.4 14.6 10.4 8.20 7.00 6.10 5.50 5.10 4.70 4.40
24 208 32.4 17.2 12.2 9.70 8.20 7.20 6.40 5.90 5.50 5.10
28 246 38.1 20.2 14.3 11.3 9.50 8.30 7.50 6.80 6.30 5.90
32 289 44.7 23.7 16.7 13.2 11.1 9.70 8.70 7.90 7.30 6.90
34 313 48.4 25.6 18.0 14.2 11.9 10.4 9.30 8.50 7.90 7.40
36 339 52.4 27.7 19.4 15.3 12.9 11.2 10.0 9.20 8.50 7.90
38 367 56.6 29.9 20.1 16.5 13.9 12.1 10.8 9.80 9.10 8.50
40 396 61.1 32.2 22.6 17.8 14.9 13.0 11.6 10.6 9.80 9.10
The Table above can be used as follows:
Assume that the pipeline pressure is 1000 psig at 40°F. This gas can hold 9.1 Ib./mmscf of water.
Assume that the pressure will be cut from 1000 psig to 100 psig at the supply regulator.
Assume that for every 100 psjg drop in pressure the gas will drop 7°F in temperature. In this case, the temperature will
drop from 40°F to -23°F (1000 psig - 100 psig / 100 psig x 7°F =63°F).
From the table, look up 100 psig and -23°F (or the closest value). If the number is below 7 lb./mmscf, water will fallout of
the gas and the desiccant should be replaced once a year to prevent problems as a result of freezing.
The above test procedure indicates the predicted service life of the Becker FD-1500 lter/dryer cartridge assembly.
Should you require any additional information or assistance please feel free to contact Becker Technical assistance.
Reference: Gas Engineers Handbook 1st Edition

Becker Model FD-1500 Filter/Dryer Instruction Manual | 3
© 2020 Baker Hughes Company. All rights reserved.

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BHBK-FD1500-IOM-33189B-0720 07/2020
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