Hydrocarbon Processing - January 2021 - 63
Valves, Pumps and Turbomachinery
Ring valves: Ring valves (FIG. 4)
are generally used in slow-speed, highpressure process applications. These
valves use concentric rings, which open
and close the valve ports. Ring valves
share with plate valves the distinction
of best suitability for high speeds of
1,000 rpm-1,800 rpm
Plate valves: Plate valves (FIG. 5)
are typically used for high-speed separable compressors. Note: In this context,
" separable " means compressors not integral to a gas engine driver. Plate valves
resemble ring valves, but with the rings
connected by ribs. Instead of individual
elements opening and closing, all valve
ports open and close in unison. They
share the high-speed suitability characteristic with ring valves.
Poppet valves: Poppet valves find
frequent use in low-compression ratio
applications, such as pipeline booster
compressors. They are preferred at low
speeds of 250 rpm-600 rpm. These
valves (FIG. 6) function by each individual poppet lifting with very low differential pressure action; they then allow gas
to pass through the flow openings in the
stop plate. Standard poppet valves are
generally used in the speed range of 250
rpm-600 rpm; modified poppet valves
are in use up to 1,200 rpm.
Design considerations. Since many
factors will affect reliability, straightforward valve comparisons are difficult. We
advocate that reliability-focused ownerpurchasers look for demonstrated experience in virtually identical services elsewhere. An educated user should insist on
viewing comparison data, and a cooperative vendor or manufacturer will not
withhold this information from reliability professionals engaged in due diligence.
In the pursuit of comparison, a wellmanaged user-purchaser applies the
principles of up-front machinery quality
assessment (MQA). Among many other
tasks, the MQA engineer verifies that the
vendor's material selection is appropriate
for the purchaser's gas conditions, operating temperature profile, and the end
user's expectations of low power losses.
Corrections and/or knowledge updates
may be required by either party; reaching early agreement during MQA will
save time and settle potential issues long
before the compressors leave the factory.
A gain of 0.5% efficiency in a 6,000kW reciprocating compressor where
power costs $0.06/kWh and where machines are expected to accrue 8,700 operating hr/yr is worth more than one
FIG. 10. A typical (A) and less-typical (B) integral cage proprietary valvesa.
FIG. 9. A standard straight flow-through valve.
FIG. 11. Demonstration of self-cleaning attributes of proprietary valvesa; top (A) and (B),
bottom (C) and (D).
Hydrocarbon Processing | JANUARY 2021 63
Hydrocarbon Processing - January 2021
Table of Contents for the Digital Edition of Hydrocarbon Processing - January 2021
Contents
Hydrocarbon Processing - January 2021 - Intro
Hydrocarbon Processing - January 2021 - Cover1
Hydrocarbon Processing - January 2021 - Cover2
Hydrocarbon Processing - January 2021 - Contents
Hydrocarbon Processing - January 2021 - 4
Hydrocarbon Processing - January 2021 - 5
Hydrocarbon Processing - January 2021 - 6
Hydrocarbon Processing - January 2021 - 7
Hydrocarbon Processing - January 2021 - 8
Hydrocarbon Processing - January 2021 - 9
Hydrocarbon Processing - January 2021 - 10
Hydrocarbon Processing - January 2021 - 11
Hydrocarbon Processing - January 2021 - 12
Hydrocarbon Processing - January 2021 - 13
Hydrocarbon Processing - January 2021 - 14
Hydrocarbon Processing - January 2021 - 15
Hydrocarbon Processing - January 2021 - 16
Hydrocarbon Processing - January 2021 - 17
Hydrocarbon Processing - January 2021 - 18
Hydrocarbon Processing - January 2021 - 19
Hydrocarbon Processing - January 2021 - 20
Hydrocarbon Processing - January 2021 - 21
Hydrocarbon Processing - January 2021 - 22
Hydrocarbon Processing - January 2021 - 23
Hydrocarbon Processing - January 2021 - 24
Hydrocarbon Processing - January 2021 - 25
Hydrocarbon Processing - January 2021 - 26
Hydrocarbon Processing - January 2021 - 27
Hydrocarbon Processing - January 2021 - 28
Hydrocarbon Processing - January 2021 - 29
Hydrocarbon Processing - January 2021 - 30
Hydrocarbon Processing - January 2021 - 31
Hydrocarbon Processing - January 2021 - 32
Hydrocarbon Processing - January 2021 - 33
Hydrocarbon Processing - January 2021 - 34
Hydrocarbon Processing - January 2021 - 35
Hydrocarbon Processing - January 2021 - 36
Hydrocarbon Processing - January 2021 - 37
Hydrocarbon Processing - January 2021 - 38
Hydrocarbon Processing - January 2021 - 39
Hydrocarbon Processing - January 2021 - 40
Hydrocarbon Processing - January 2021 - 41
Hydrocarbon Processing - January 2021 - 42
Hydrocarbon Processing - January 2021 - 43
Hydrocarbon Processing - January 2021 - 44
Hydrocarbon Processing - January 2021 - 45
Hydrocarbon Processing - January 2021 - 46
Hydrocarbon Processing - January 2021 - 47
Hydrocarbon Processing - January 2021 - 48
Hydrocarbon Processing - January 2021 - 49
Hydrocarbon Processing - January 2021 - 50
Hydrocarbon Processing - January 2021 - 51
Hydrocarbon Processing - January 2021 - 52
Hydrocarbon Processing - January 2021 - 53
Hydrocarbon Processing - January 2021 - 54
Hydrocarbon Processing - January 2021 - 55
Hydrocarbon Processing - January 2021 - 56
Hydrocarbon Processing - January 2021 - 57
Hydrocarbon Processing - January 2021 - 58
Hydrocarbon Processing - January 2021 - 59
Hydrocarbon Processing - January 2021 - 60
Hydrocarbon Processing - January 2021 - 61
Hydrocarbon Processing - January 2021 - 62
Hydrocarbon Processing - January 2021 - 63
Hydrocarbon Processing - January 2021 - 64
Hydrocarbon Processing - January 2021 - 65
Hydrocarbon Processing - January 2021 - 66
Hydrocarbon Processing - January 2021 - 67
Hydrocarbon Processing - January 2021 - 68
Hydrocarbon Processing - January 2021 - 69
Hydrocarbon Processing - January 2021 - 70
Hydrocarbon Processing - January 2021 - 71
Hydrocarbon Processing - January 2021 - 72
Hydrocarbon Processing - January 2021 - 73
Hydrocarbon Processing - January 2021 - 74
Hydrocarbon Processing - January 2021 - 75
Hydrocarbon Processing - January 2021 - 76
Hydrocarbon Processing - January 2021 - 77
Hydrocarbon Processing - January 2021 - 78
Hydrocarbon Processing - January 2021 - 79
Hydrocarbon Processing - January 2021 - 80
Hydrocarbon Processing - January 2021 - 81
Hydrocarbon Processing - January 2021 - 82
Hydrocarbon Processing - January 2021 - Cover3
Hydrocarbon Processing - January 2021 - Cover4
https://www.nxtbook.com/gulfenergyinfo/gulfpub/hpi-market-data-2024-v2
https://www.nxtbook.com/gulfenergyinfo/gulfpub/hpi-market-data-2024
https://www.nxtbook.com/gulfenergyinfo/gulfpub/gas-processes-handbook-2022_v2
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https://www.nxtbook.com/nxtbooks/gulfpub/hp_202107
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https://www.nxtbook.com/nxtbooks/gulfpub/hp_202009
https://www.nxtbook.com/nxtbooks/gulfpub/hp_202008
https://www.nxtbook.com/nxtbooks/gulfpub/refining_processes_handbook_2020
https://www.nxtbook.com/nxtbooks/gulfpub/refining_processes_handbook_2020_v2
https://www.nxtbook.com/nxtbooks/gulfpub/hp_202007
https://www.nxtbook.com/nxtbooks/gulfpub/hp_202006
https://www.nxtbook.com/nxtbooks/gulfpub/hp_202005
https://www.nxtbook.com/nxtbooks/gulfpub/hp_202004
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https://www.nxtbook.com/nxtbooks/gulfpub/hp_202001
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201912
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201911
https://www.nxtbook.com/nxtbooks/gulfpub/hpimarket_2020_v2
https://www.nxtbook.com/nxtbooks/gulfpub/hpimarket_2020
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201910
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201909
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201908
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201907
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201906
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201905
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201904
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201903
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201902
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201901
https://www.nxtbook.com/nxtbooks/gulfpub/petrochemical_2018_v2
https://www.nxtbook.com/nxtbooks/gulfpub/petrochemical_2018
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201812
https://www.nxtbook.com/nxtbooks/gulfpub/hpimarket_2019_v2
https://www.nxtbook.com/nxtbooks/gulfpub/hpimarket_2019
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201811
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201810
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201809
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201808
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201807
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201806
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201805
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201804
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201803
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201802
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201801
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201712
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201711
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201710
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201709
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201708
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201707
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201706
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201705
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201704
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201703
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201702
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201701
https://www.nxtbook.com/nxtbooks/gulfpub/hp_2017mediaplanner
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201612
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201611
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201610
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201609
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201608
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201607
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201606
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201605
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201604
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201603
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201602
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201601
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201512
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201511
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https://www.nxtbook.com/nxtbooks/gulfpub/hp_2016mediaplanner
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201509
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201508
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201507
https://www.nxtbook.com/nxtbooks/gulfpub/hp_2015tmsd
https://www.nxtbook.com/nxtbooks/gulfpub/hp_201506
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