End to end capabilities in Plant Engineering Multi-discipline engineering for the modernisation of a batch cooking plant

CASE IN BRIEF

Customer: Renewcell
Project location: Sundsvall, Sweden
Year completed: 2022.
Project goal: Hundreds of millions of garments to be saved from landfill and incineration each year​.
Plant type: Re-pulping of fabric for production of recycled textiles
Capacity: 60 000 ton/year

Cyient scope of services:​

• Project management
• Process design
• Layout and piping design

Renewcell, a multi-award-winning sustaintech company, cooperated with Cyient regarding the production of recycled textiles in Sweden. Renewcell’s vision is to inspire an Industrial Evolution to a sustainable world by producing high quality materials from recycled textiles.

Through its patented process, Renewcell can upcycle cellulosic textile waste, such as cotton clothes, transforming it into a pristine new material called Circulose®. Fast Company named Renewcell as one of the World’s Most Innovative Companies 2021. Circulose® was also included on TIME Magazine’s list of the 100 Best Inventions 2020.

Renewcell’s product is Circulose® – a branded dissolving pulp product produced from 100% recycled textiles. Renewcell’s customers use Circulose® as a raw material to produce natural biodegradable textile fibers like viscose and lyocell. By replacing virgin textile fibers like cotton with fibers produced from Circulose®, fashion brands can reduce the climate and environmental impact caused by raw material extraction and fashion waste generation significantly. Contaminants and other non-cellulosic content are separated from the slurry. The slurry is dried to produce a pure, natural Circulose® branded dissolving pulp made from 100% recycled textiles. The sheets of Circulose® are finally packaged into bales and fed back into the textile production value chain as a replacement for virgin materials like cotton, oil, and wood.

At Renewcell’s new plant constructed in Sundsvall, Sweden, hundreds of millions of garments will be saved from landfill and incineration each year. The plant was designed and planned to be in operation in the first half of 2022. The cooperation between Cyient and Renewcell started in 2020, when a pre-study was conducted by Cyient.

Cyient provided project management, process design, layout, and piping design for the plant in Sundsvall.

 

CASE IN BRIEF

Customer: Ahlstrom-Munksjö
Project location: Sweden
Year completed: 2019.
Technical data:
Plant type: Batch cooking plantof a batch cooking plant

Project description

Instalment of a fifth digestor to increase the capacity of the cooking plant in Billingsfors site.

Citec's a Cyient Company scope

Citec, a Cyient Company was involved in several key areas of the modernization work on the batch cooking plant:
    • Project Management
    • Basic and detail engineering for Piping, Process as well as Layout and piping
    • Stress and strength calculation
    • Purchase support
    • Installation management
    • Risk analysis

CASE IN BRIEF

Customer: Linde AG

Project location: Russian Federation

Year completed: 2019.

Technical data:

Plant size: almost 1 square kilometer

Ethylene production/year: 1.5 million tonnes

Project description

Citec, a Cyient Company, key activities for parts of the ethylene cracker plant project at the Tobolsk site:
    • Civil, Structural & Architectural detailed design
    • Concrete 44 000 m3
    • Structural steel 30 400 ton
    • Piles 17 400 pc
    • Architectural detailed design, Building Volume 134 000 m3
    • Concept design alignment, Basic and Detail HVAC engineering design
    • Compressor buildings & Wastewater treatment unit. HVAC equipment specifications, full 3D modelling, piping, plumbing, electrical & control engineering.
    • Building safety and fire safety & protection
    • Compressor buildings & Wastewater treatment unit
    • Field Engineers located at site.
Citec, a Cyient Company scope
    • Structural steel and concrete design of buildings and structures
    • Architectural design of buildings
    • HVAC process ventilation design
    • Building safety
    • Firefighting and detection system design
    • Gas detection system design
    • Paving design

CASE IN BRIEF

Customer: FLSmidth Pvt. Ltd
Project location: Bangladesh
Year completed: 2017.
Technical data:
Capacity of vertical roller mill (VRM): 640tph
Cement fineness: 3800 Blaine

Project description

The Vertical roller mill (VRM) at the Shah cement plant in Bangladesh, with a capacity of up to 640tph and 3800 Blaine, will be the largest cement VRM in the world to be installed at a cement plant, in terms of mechanical dimensions and operating capacity.

Citec, a Cyient Company scope

Design, development, and detail engineering including as built drawings for challenging structures like cement mill feed house with heavy hoppers with total capacity 5000MT, dynamic foundation for induced draft fan, cement mill building with heavy crane of 77Mtons.

CASE IN BRIEF

Customer: Södra Cell AB, Sweden
Project location: Sweden
Technical data:
    • Diameter of cutting board: 3400 mm
    • Thickness of cutting board: 210 mm
    • Speed of cutting board: 246 rpm
    • Number of knives: 12 pc.
    • Max. diameter of log: 800 mm
    • Chip length: 16-35 mm
    • Capacity based on chip length: 800-1300 m3 chip/hour.
    • Inertia moment J: 23 600 kgm2
    • Heaviest weight on the lift rotor (axle, cutting board and storage): 18 00 kg
    • Net weight excluding motor and gear system: 31 000kg.

Project description

A chain conveyor is used for proper feeding of the wood into the chipper. It is considerably cheaper when compared to roller conveyor. It also requires less maintenance and is safer to operate. The conveyor has seven chains of which the four feed chains are driven by a hydraulic engine of type CA 50 Hägglunds Compact 30kW. The three side chains are driven by a hydraulic motor of type CA 50 Hägglunds Compact 22kW. A height limiter is mounted to avoid jams caused by logs that are too large being fed into the chipper. In case of a jam, the three side chains will first be driven on reverse to loosen the logs and at the same time, the log lifter located on the side of the chain conveyor will be activated.
A high performance horizontally fed mill with a cutting aperture of 800 mm.

Main components of the machine:

    • Cutting board with axle and storage
    • Forward and back frames
    • Cover for the cutting board.
    • Behind the cutter is a large chip pocket, which equalizes the flow to a metering screw carrying chips on through several screw conveyors to the digester house.

Citec, a Cyient Company scope

Citec, a Cyient Company scope consisted of design engineering of a new wood room line. Citec created a layout based on the customer’s requirements for capacity and physical locations and complete calculations for the chain conveyor, cutter, and chip pocket together with the manufacturing drawings. Citec also calculated and created the following chip pocket as well as designed the metering screw and the included screw conveyor.

CASE IN BRIEF

Customer: Wärtsilä
Project location: Finland
Year completed: 2017.
Technical data:
Terminal main data:
    • Tank net volume: 50 000 m3
    • Ship unloading rate: 3 000 m3/h
    • Send out rate (max): 40 t/h
    • Outlet gas pressure: 6.0 barg
    • LNG in-tank pumps: 3 x 175 m3/h
    • BOG compressors: 3 x 3 000 kg/h

Project description

As a response to stricter environmental requirements, a liquefied natural gas (LNG) import terminal is built in Röyttä, Tornio. The terminal will make the Finnish gas and fuel markets more versatile and are used by shipping and road transportation companies as well as power and heat utilities. The terminal can also be used for LNG bunkering as well as supplying fuel for LNG-powered ships.

Citec, a Cyient Company scope

Citec, a Cyient Company was involved in several key areas of the LNG project, such as:
    • engineering management
    • layout design
    • interface management
    • 3D model management
    • piping design
    • firefighting system design
    • civil structures (LNG tank excluded)
    • terminal electrification design
    • quality assurance

CASE IN BRIEF

Customer: Petrofac International Ltd.
Year completed: 2015.

Project description

The project is a gas gathering center in the Middle East, capable of producing around 100,000 barrels of oil per day together with associated water and gas.

Citec, a Cyient Company scope

Citec, a Cyient Company scope mainly consists of civil design including the RCC structure and architectural design for 8 buildings including 2 blast proof buildings. Also including electrical & instrumentation scope for earthing, lighting, F&G and telecom layouts. Blast resistant design included critical analyses like Blast analysis and Time History analysis.