Scrubbing system

Scrubbing system | Rieco

Industry: Fragrance & flavour

Client: Swiss company, a global leader in the flavours, fragrances and active cosmetic ingredients.

Location: Ranjangaon, Pune

About the Client:

Our customer is a Swiss company, a global leader in the flavours, fragrances and active cosmetic ingredients. It is the world’s largest company in the flavour and fragrance industries. RIECO has supplied Fume and Dust Extraction systems for flavour production unit at Ranjangaon MIDC near Pune which also works as odour removal system. The project was installed under the consultancy firm, TCE, Mumbai.

Challenge and special requirement

  • Emission requirement less than 10 mg/Nm3
  •  Odour removal along with handling of the fumes & particulate
  • Varying composition of input gas.
  • All the material inside the plant shall be food grade
  • Hygiene to be maintained as per global standard, with no bacteria formation.
  • Friction parts were to be flameproof & Spark proof.
  • All E & I was to be flameproof/ explosion proof protection.
  • Noise level below 75 dBA.
  • Execution on EPC Basis with the stringent safety standard of MNC / Food industry.

Rieco Solution design details

System Description – System 1
The system is designed to vent out fumes and organic vapours from various process vessels in the liquid section. The fumes from the process equipment’s shall be sucked through suction hoods and duct pipes connected to the top of the vessel by creating suction. Butterfly valves are provided for isolation of the fume extraction system when the process equipment is not in operation.
The vapours from various process vessels are directed to a packed bed scrubber through ductwork. The vapour/air enters the scrubber after it is cleaned of contaminants by counter current flow of scrubbing water. The two phases come into intimate contact in the packed bed section and clean gas leaves from the scrubber top to an ID Fan that is responsible for creating suction throughout the system. The fan outlet is connected to a common outlet stack for safe discharge into atmosphere

Scrubbing system | Rieco

System Description – System 2
The system is designed to vent out Solid powder + Air from various process like blenders, charging points etc. in the blender section. The dust laden air from the process equipment’s shall be sucked through suction hoods and duct pipes connected to the top of the vessel by creating suction. Butterfly valves are provided for isolation of the extraction system when the process equipment is not in operation.

The powder + air from various points is directed to a bag filter / dust collector through ductwork. The powder + air enters the dust collector; major of heavy solid particles is arrested in the dust collector. Once the particulate matter is cleaned by dust collector or bag filter, it is further cleaned of gaseous contaminants in scrubber system. In scrubber the two phases (water + dust) come into intimate contact and clean gas leaves from the scrubber top to an ID Fan, responsible for creating suction throughout the system. The fan outlet is connected to an outlet duct for safe discharge into atmosphere.

Scrubbing system | Rieco

Hoods were supplied with MOC as SS 316, food grade quality. All ducting was supplied in SS 304, food grade with 220 grit finish. Tri-clover clamp fittings were used for the duct connection for easy maintenance and cleaning. Complete ducting provided with quick cleaning nozzles. The packed bed scrubber, water scrubber and exhaust stack MOC considered is PP/FRP suitable to handle the gas. For both the systems, ID fans were designed as per AMCA standards with spark proof design and with impeller in Aluminium MOC.

Results

The desired outlet parameters along with odour removal at the outlet of system were achieved. Also, operators can perform their work efficiently; particulate removal was done efficiently. Working environment hygiene is maintained as per the Global

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