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TRANSCRIPT
Wet Air OxidationOne Stop solution for your spent caustic treatment
Introduction
02
Building on expertise
Wet Air Oxidation
Linde’s WAO technology since 1970
Off-Gas
Off-Gas Cooler
Oxidized Caustic
Vent
CWS
CWR
Activated Carbon
Off-Gas Vent
TSS Filter
COD Reactor
To COD reduction
Re-circulation Pump
Spent CausticCooler
Re-circulationSteam
NeutralizationDrum
WAOReactor
Charge Pump
Feed
Compressed Air Stream
Oxidized Caustic
Feed SpentCaustic
Spent Caustic
Spent Caustic
Storage
Treated Causticto WWTP
Lowest CAPEX and
solutions with standardised plant
optimised OPEX
Since 1970, Linde Engineering has successfully executed several projects for the treatment of spent caustic effluents using a Wet Air Oxidation (WAO) process. This applies to the streams generated from Refinery and Petrochemical complexes, prior to sending them to common effluent treatment unit.
Linde is committed to provide its technology from concept to commissioning. Linde designs, supplies, constructs and provides after sales service for spent caustic treatment plants. Today, Linde is one of the leading global end to end solution provider for such plants.
Based on the environmental regulations, Linde selects either of the following process configurations to minimize investment and optimize operating cost.
Low Pressure Process for treatment of spent caustic upto <10 wt PPM of sulphides
Further, Linde is experienced and has dealt with virtually every kind of spent caustic streams generated from:
Petrochemical Refinery
DHDT and Hydrocracker Unit
Propylene Recovery Unit
Gasoline/Jet/Kerosene/LPG treating Unit
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Medium Pressure Process for treatment of spent caustic upto <1 wt PPM of sulphides
Ethylene Plant Merox Unit
PDH Plant Isomerization Unit
– Spent Caustic Storage tank to collect various continuous and intermediate streams with residence time for settling and skimming of hydrocarbons.
– Feed preheater to increase the desired reaction temperature of the feed stream.
– Oxidation reactor enables treatment of spent caustic using plant air and steam.
– Off Gas Cooler and activated carbon package (optional) to release vent gases for safe disposal.
– Neutralization section to maintain pH before routing treated spent caustic to effluent treatment plant.
– COD reduction package (optional) based on project specifications.
The WAO process for spent caustic treatment comprises of following process steps:
Linde Wet Air Oxidation Process
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Filter
2 4H SO
Pre-heater
03Wet Air Oxidation
Fact Sheet of Line Process Concepts
No.of Equipment
Operating Pressure
Operating Temperature
Residence Time
Feed/Effluent Heat
Reactor Material
Na S as S -
Utilities
* 6-8
7 barg
125°C
480 min (average)
Yes
CS, SS316L (internals)
<10wt ppm
LP steam, air, CW,
8-12
35 barg
200°C
70 min (average)
No
Alloy 600
<1w ppm
MP steam, air, CW,
Linde Spent CausticLP Oxidation
Linde Spent CausticMP Oxidation
Environmental Regulation Compliance
Units are designed to meet environmental regulations both upto <10 wt PP < or < 1 wt PPM of Sulphides.
High Operational Reliability
Measured by the cumulative experience gained in the operation of spent caustic units. All plants installed since 1970 are still in operation w
Lowest Operating Cost
Linde’s WAO process offers optimised operating cost at minimum Capex w
Prefabricated Modules
To reduce construction costs and logistics efforts, these units are offered in modularized skids.
ith the exception of facilities that have closed.
ith low pressure process.
Advantages of Linde Wet Air Oxidation Process
Execution Concept: Pre-fabricated
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Resulting in faster execution which adhers to schedule
Improved quality and safety
Reduced engineering effort and construction cost
Limited period of site construction, minimize the site activities
To avoid logistic challenges, containerize skids can be offered for special project locations
Modular units compliant to codes and standards such as ASME, CE, KGS, etc.
Maximum availability of plant operation
Features
10m³/hr spent caustic treatment plant for IOCL, Vadodara Refinery, India
3m³ /hr spent caustic treatment plant for Indorama ventures Olefins LLC, Lousiana, USA
Options for low and medium
*Depends on process concept selection and scope of work
2
2
2
4H SO 2 4H SO , N 2
standardized modules
pressures processes
Plant engineering
→ Air separation plants
→ LNG and natural gas processing plants
→ Petrochemical plants
→ Hydrogen and synthesis gas plants
→ Chemical plants
→ Adsorption plants
→ Cryogenic plants
→ Carbon capture and utilisation plants
→ Furnaces, fired heaters, incinerators
Component manufacturing
→ Coldboxes and modules
→ Coil-wound heat exchangers
→ Plate-fin heat exchangers
→ Cryogenic columns
→ Cryogenic storage tanks
→ Liquefied helium tanks and containers
→ Air-heated vaporisers
→ Water bath vaporisers
→ Spiral-welded aluminium pipes
Collaborate. Innovate. Deliver.
Linde’s Engineering Division is a leading player in the international plant engineering business. Across the globe, we have
delivered more than 4,000 plants and cover every step in the design, project management and construction of turnkey
industrial facilities. Our proven process and technology know-how plays an indispensable role in the success of our customers
across multiple industries – from crude oil, natural gas extraction and refining to chemical and metal processing.
At Linde, we value trusted, lasting business relationships with our customers. We listen carefully and collaborate closely with
you to meet your needs. This connection inspires us to develop innovative process technologies and equipment at our high-
tech R&D centres, labs and pilot plants – designed in close collaboration with our strategic partners and delivered with passion
by our employees working in more than 100 countries worldwide.
From the desert to the Arctic, from small- to world-scale, from standardised to customised builds, our specialists develop plant
solutions that operate reliably and cost-effectively under all conditions.
You can always rely on us to deliver the solutions and services that best fit your needs – anywhere in the world.
Discover how we can contribute to your success at www.linde-engineering.in
Services
→ Revamps and plant modifications
→ Plant relocations
→ Spare parts
→ Operational support, troubleshooting
and immediate repairs
→ Long-term service contracts
→ Expert reviews for plants, operations
and spare part inventory
→ Operator training
Core competencies at a glance
PT Linde Indonesia Jakarta, Indonesia+61 [email protected]
Linde AG, Engineering Division Pullach, Germany Phone +49 89 7445-0 Fax +49 89 [email protected]
Linde Engineering North AmericaHouston, TX, USAPhone +1.281.717-9090,[email protected]
Linde Engineering (Malaysia) Sdn BhdPetaling Jaya+603 7947 [email protected]
Linde AG - Iran BranchTehran, IranPhone +98 21 22664548 Fax +98 21 [email protected]
Linde Engineering Rus, OOO Samara, Russia Phone +7 846 331-3355
Linde Engineering India Pvt.Ltd.Vadodara, Gujarat, India Phone: +91.265.3056789 Fax: +91.265.2335213 [email protected]
Linde Engineering Middle East LCCAbu Dhabi, United Arab EmiratesPhone +971 2 698-1400 Fax +971 2 [email protected]
Linde Engineering Korea Ltd.Seoul, Republic of Korea Phone +82 2780-0952 Fax +82 [email protected]
Linde Engineering India Pvt. Ltd. “Linde House”, Opp. VUDA Office, V.I.P. Road Karelibaug, VadodaraPhone: +91.265.3056.789, Fax: +91.265.2461.757, [email protected], www.linde-engineering.in