Hydrocarbon Processing - February 2021 - 20

Valves, Pumps and
Turbomachinery

A. Al-Ghamdi, S. H. Al-Dossary and A. Al-Dhafiri,
Saudi Aramco, Dhahran, Saudi Arabia;
M. Al-Zahrani, Saudi Aramco, Riyadh, Saudi Arabia;
and V. Navrotsky, Siemens Energy, Finspång, Sweden

Using 3D metallic printing for manufacturing
refinery pump impellers
Additive manufacturing (AM), also
known as 3D metallic printing, is identified as one of the game-changing technologies in recent years for the oil and
gas industry. Although the nonmetallic
AM industry has progressed significantly, metallic additive manufacturing for

FIG. 1. Drawing development process.

the oil and gas industry is still in the early
development phase. Various technologies have been developed, or are being
developed, to allow manufacturing of
metallic spare parts.
Saudi Aramco, a major oil producer,
is collaborating with several AM-leading

companies to evaluate this technology and
capitalize on its benefits, where applicable.
This article documents the collaboration
between Saudi Aramco and Siemens Energy to manufacture and deploy the first
3D metallic-printed pump impeller, for
use at Saudi Aramco's Riyadh refinery.
Trial part selection. As the target for
this trial was 4 mos-6 mos of field testing, the team started the part selection
exercise for a component used in rotating
equipment that will be in continuous operation for the duration of the trial. This
would ensure that the part was subjected
to dynamic load, which is more severe
than static loads. In addition, the part
should not have any major impact on the
plant safety and operation if it fails during
the field test. Several equipment items and
parts were considered, and a final decision was made for conducting the trial on
an impeller for a water circulation pump
with the parameters specified in TABLE 1.
Part dimensional measurements.
Since the pump impeller has complex geometry, it was necessary to do a 3D scan
of the impeller to obtain its overall shape.
In addition, since the selected impeller is
a closed design with small internal passages, it was not possible to obtain the geTABLE 1. Parameters for trial for an
impeller for a water circulation pump
Parameter

Value

Pump type

Horizontal overhung

Liquid

65

Flowrate, m3/hr

13

Motor rating, kW
Original impeller material
Impeller diameter, cm
FIG. 2. Powder bed fusion process. Source: 3DEO.

20 FEBRUARY 2021 | HydrocarbonProcessing.com

Water

Differential head, m

Part failure mode

7.5
Cast iron
18.3
Corrosion



http://www.HydrocarbonProcessing.com

Hydrocarbon Processing - February 2021

Table of Contents for the Digital Edition of Hydrocarbon Processing - February 2021

Contents
Hydrocarbon Processing - February 2021 - Cover1
Hydrocarbon Processing - February 2021 - Cover2
Hydrocarbon Processing - February 2021 - Contents
Hydrocarbon Processing - February 2021 - 4
Hydrocarbon Processing - February 2021 - 5
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Hydrocarbon Processing - February 2021 - GP-1
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Hydrocarbon Processing - February 2021 - GP-36
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https://www.nxtbook.com/nxtbooks/gulfpub/petrochemical_2018_v2
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https://www.nxtbook.com/nxtbooks/gulfpub/hp_201812
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