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Stopson Italiana delivered 172 Vent Silencers for 4 different sections in a Bahrain based Refinery

A full-package solution aimed at obtaining total sound insulation towards different target parts in an Oil Refinery in Bahrain, which has recently undergone an ambitious modernization program.

 

The project

Stopson Italiana has successfully concluded the delivery of 172 Vent Silencers to be installed among 4 different structural parts of the Oil Refinery in question. The project assists the expansion program that has been taking place since 2018, and it is expected to reach completion prior to the end of 2022.

The Refinery is situated on the island of Sitra, southwest of the capital city Manaba, and produces about 260,000 barrels per day (bpd) of crude oil and 40,000 bpd of low sulfur diesel.

 

The Supply

The project has been carried out according to the following distribution:

  • n. 2 HP Export Steam Silencers;
  • n. 60 PSIG Steam Vent Silencers;
  • n. 110 PSIG Steam Vent Silencers via a second delivery.

And will cover the following areas: 

  • Safety Systems;
  • Boilers;
  • Blow Out and Clean up;
  • Ventilation Systems.

Most of the Silencers have been provided with a removable internal absorptive pack for easy maintenance and clean-up and a removable rain hood. They are all designed to reach a noise target of 82 dB(A) @ 1 m from the silencer.

 

What is a Vent Silencer

A Vent Silencer is a soundproofing device aimed at eradicating the adverse noises produced by gas or steam flow while piping into the atmosphere. The noise in question can be generated as a result of the high-velocity flow through the valve and/or a turbulence created around any impedance in the line that may cause restriction or simply change the flow’s direction.

Each Vent Silencer is able to provide an overall attenuation of the noise level to the required sound pressure level criteria at a certain distance from the silencer. 

At the same time, noise reduction can be attained both using a reactive section to attenuate the low frequencies and absorption mean of the high frequency, normally using a sound-absorbing material.

Stopson Italiana engineers its Vent Silencers in Italy, using special materials not only in accordance with all quality standards but also in line with the client’s specific needs thanks to a careful customer management process.

⟶ For More Information about Stopson’s Italiana Vent Silencers click here.

 

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Stopson Italiana supplied 21 vent silencers for PSV and start-up valves as well as for atmospheric blow-down tank to Agios Nikolaos power plant in Greece

A soundproofing comprehensive installation has been recently delivered to assist 826 MW Power Plant (CCGT) at Agios Nikolaos, Greece.

 

Introduction

With a 9HA.02 gas turbine, a steam turbine, and a 109FB turbo generator, the Agios Nikolaos power plant is one of the biggest and most efficient combined-cycle gas turbine (CCGT) power plants in Europe. In these types of power stations, several technological methods are employed to control combustion processes. Among these, the traditional usage of boilers and HRSG, which are commonly likely to damage surrounding and inner environments via harmful noise exposition. In fact, safety valves, start-up valves, blow down and flash tank have the tendency to create a very high noise level while discharging into the atmosphere.

Stopson Italiana has designed a specified soundproofing technique in order to provide a high degree of noise abatement. The equipment is silenced through the implementation of separated and well sized silencers, which tackle the source of noise directly in three different operational parts: the pressure safety valve (PSV), the start-up valve, and the atmospheric blow-down tank.

 

The Supply in details – technical specifications and characteristics

In details, the total supply has been designed in line with the following configuration:

  • 16 vent silencers were designed for PSV, with flow rates ranging from 30 t/h to 300 t/h, temperatures up to 584°C and noise target of 115 dB(A) @ 1 m.
  • 4 vent silencers designed for start-up valve with flow rates ranging from 6 to 260 t/h, temperatures up to 504°C and noise target of 100 dB(A) @ 1 m.
  • 1 vent silencer applied to the atmospheric blow-down tank, performing flow rate 39 t/h, temp. up to 105 °C, 80 dB(A) @ 1m.

 

Stopson Italiana Vent Silencers

  • Safety Valve (PSV)
  • Relief valve (PRV)
  • Control valve
  • Ejector
  • Startup valve
  • Snort-valve
  • Flash and Blowdown Tanks

⟶ For More Information about Stopson Italiana Vent Silencers click HERE.

C.O.R.U. Project Moscow
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Stopson Italiana delivers Vent Silencers for Refinery and Petrochemical Projects in Russia

EAC certified vent silencers successfully supplied for Oil & Gas projects in Moscow and Kingisepp

Stopson Italiana has recently completed delivery of 10 silencers to be installed at Combined Oil Refinery Unit (CORU), in the Moscow Refinery and 9 vent silencers to be installed at the new Ammonia plant under construction in Kingisepp, Russia, according to the data below:

  • C.O.R.U. Project – no. 10 SPM and PSP vent silencers for the Combined Oil Refinery Unit, with flow rates from 0,4 to 46 t/h. Temperatures from 150 °C to 450 °C, noise levels 80 dB(A) @ 1 m.
  • Kingisepp Project – No. 9 SPM vent silencers for the Ammonia plant, i.e. Steam and CO2 with flow rates from 1 to 130 t/h. Temperatures from 110 °C to 515 °C, noise level 85-110 dB(A) @ 1 m.

9 SPM Vent Silencers Ammonia PlantAll silencers have engineered according to the highly demanding EPC and end user’s technical specifications. They have been manufactured in Italy in special materials, including stainless steel for internal components, and certified in accordance with EAC TR CU 010 standards for Russian market.

Stopson’s Vent Silencers can be installed downstream any device acting as a link between a container of pressurized gaseous fluid and the atmosphere. The vent silencer can also provide high or low back pressure relief for the system ensuring proper operation.

SPM Vent Silencers, used for higher flows and back pressure, are based on a combined reactive and absorptive principle for noise reduction. The gases expand to atmospheric pressure through a perforated diffuser, providing a first important step in attenuation. The flow evolves into a sound-absorbing lining section to further contribute to reach required noise residual level.

PSP Vent Silencers, used for lower flows and back-pressures, feature an expansion chamber upstream the final absorptive section with no diffuser at the inlet.

A special sound-proofed weather hood is finally heading flow and noise upward, while delivering an effective rain protection and drainage.

Vent silencers can be reactive, absorptive or combined type depending on applications and required attenuation, which can reach as much as 75 dB(A).

Typical Applications for vent silencers are:

  • Safety Valve (PSV)
  • Relief valve (PRV)
  • Control valve
  • Ejector
  • Start up valve
  • Snort-valve
  • Flash and Blow Down Tanks
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Stopson Italiana Vent Silencers soundproofs the Cold Flow Turbine Test Facility, one of the most world-class avionics project

5 Steam Vent Silencers successfully installed in Poland in the world’s most modern laboratory for aeronautical turbine test.

Industrial soundproofing covers various sectors and applications. Thanks to its expertise, Stopson Italiana is able to provide turnkey service in the acoustic insulation applied to Power Generation, Oil & Gas, Marine and Avio sectors.

For this latter, several noteworthy installations have been delivered. Among these a huge supply of vent silencers with their respective jet air turbine test chambers has been developed to for GE Avio.

The installation of “PoloniAero” was inaugurated at the end of 2015, and it still represents a unique example of cooperation between universities and industry. The structure – one of the largest and most avant-garde laboratories in the world – was financed by EU funds. The objective is the turbine test for low pressure (and next-generation) aeronautical engines, as well as technological demonstrators used for the construction of aeronautical engines.

The Cold Flow Turbine Test Facility combines the scientific expertise of Poland with the aerospace industry innovation. The partners of the Polish Aero scientific-industrial company are Avio Aero, Military Aircraft Works No. 4, the Warsaw University of Technology and the Military University of Technology. The ultimate goal of the choral project concerns the development of aerospace industry activities, including aeronautical turbine testing.

Stopson Vent Silencers are designed to reduce the noise level of exhaust pipes in the atmosphere for pressurized gaseous fluids. They can be installed downstream of any device that acts as a connection between a pressurized gaseous fluid reservoir and the atmosphere. The Steam Vent Silencer can also provide a high or low backpressure to ensure the proper operation of the system.

Noise reduction is achieved by two principles: a reactive section, useful for attenuating low frequencies; and a high frequency absorption section possible by inserting a sound-absorbing material.

Ventilation silencers can be reactive, absorbent or combined, according to the applications and required attenuation, which can reach up to 75 dB (A).

Typical applications for vent silencers are:

  • Safety Valve (PSV)
  • Ventilation Valve (PRV)
  • Control valve
  • Ejector
  • Starting valve
  • Snort valve
  • Flash and Blow Down Tanks

To see all the features in detail, visit Stopson Italiana Vent Silencers page.