• Restore Thermal Efficiency
  
• Restore flow
  
• Ensure Safety
  
• Maintain Performance
  
• Prevent Untimely Release of Deposits
  
• Prevent Under-deposit Activity
  
• Provide substrate for corrosion inhibition
  
• Improve Production Rates
  
• Decrease Maintenance Costs
  
• Reduce CAPEX
  
• Increase Efficiency
  

In the nineties of previous century, some industrial services companies understood the consequences of the “old school techniques” and started to develop (environmental friendly) decontamination and degassing chemicals. This was the beginning of a new era where the challenges of today can’t be answered by yesterday’s solutions.

With almost 2 decades of degassing and decontamination experience and over 100 projects actively executed and connections globally, SEIS Consult feels comfortable supporting you to find the solution that suits best to your system / plant cleaning requirements. We have a global access to an innovative array of proprietary chemistries designed to meet your goals.

The chemicals are primarily designed to achieve one or all of the following depending on the operational parameters of the process equipment.

• Increase safety for personnel and site
• Reduce Benzene Levels Below 0.1 ppm
• Zero Volatile Hydrocarbon Content
• Reduce Hydrogen Sulphide Levels
• Reduce Ammonia Levels
• Reduce Mercaptanes
• Reduce / deactivate Pyrophoric Iron Deposits
• Reduce Paraffin and Asphalt Crude’s and Deposits
• Reduce the Need for Mechanical Cleaning
• Aids in the Cleaning and Removal of Coke and Carbonized Deposits
• Improves Oil Recovery
• Decrease Shut Down Time compared to tradition cleaning up to 50–75%

With Chemical Decontamination / Degassing also the waste / wastewater problem has been reduced. During the cleaning operation, a limited quantity of water is required for circulation of the chemicals. After the cleaning, the wastewater is containing the chemicals and the hydrocarbons left in the system, and is now good to get disposed to the slops tank(s). A post flush of the system with fresh water is hardly containing chemicals nor hydrocarbons and can be disposed of to the WWTP. All of this means that off-site disposal is no longer required resulting in a cost saving.

SEIS Consult realises that the turnaround philosophy over the last 25 year in order to provide a dynamic quality service that can minimise shutdown / turn-around time has been changed dramatically. Nitrogen Services is part of that change and SEIS consult can guide you through the possibilities and application opportunities.

We have an extensive track record with major Tier 1 on- and offshore companies, refineries and chemical plants in Australia, New Zealand, Europe and Middle East providing a wide variety of technical solutions and services to a very high level of satisfaction.

SEIS Consult can advise you on:

• Nitrogen Services, general info
• Gaseous Nitrogen or Liquid Nitrogen
• Nitrogen Membrane units
• Liquid Nitrogen pumping units
• Nitrogen / Helium Leak Testing
• Nitrogen Purging
• Cool down / Accelerated cooldown
• Nitrogen Pressure Testing / Pneumatic strength testing
• Drying (Air / Nitrogen / Vacuum)
• Inertising with Nitrogen foam
• Pipe freezing
• Project documents: Risk analyses (JSEA) and Application Procedures

Think about Gas recompression!

• Valid for all natural gas transfer operations
• Transfer natural gas from one system or pipeline to another at discharge pressure of up to 70 bar and minimum inlet pressure of 0 - 7 bar depending on configuration
• The latest generation gas compressors allow this service to be greatly enhanced, increasing the recovery volumes, whilst minimizing transfer time
• Gas transfer service is divided into two types of operation :
• High Pressure  (HP) Compression
• Low Pressure (LP) Compression
• Definition
• High pressure transfer is an operation where the donor and recipient system has pressure between 30 bar & 100 bar.
• High Pressure (HP) Transfer Overview
• In normal operations the line pressure is reduced to a minimum by the operator.  Typically around 50 bar.  In the past the operator would vent or/and flare the residual gas.
• Nowadays high pressure compressor package enables the operator to further reduce their line pressure to typically 10-12 bar.  The compressor discharge is usually transferred to another pipeline trunk up to 70 bar maximum discharge
• This service has enabled the operator to recover the gas, which allowed them to minimise contractual gas loss penalties and reduce environmental impact
• This service is primarily used for the evacuation of pipelines and systems to enable maintenance and provide enhanced gas recovery over and above the clients own capability
• Low Pressure (LP) Transfer Overview
• Efficient pipeline evacuation for pressure below 30 bar.
• Technology is available that will provide an efficient method of reducing the pipeline pressure to 0 barg
• For use where the feed and recipient system pressure is less than 30 bar
• Where discharge pressure in excess of 30 bar is required, the LP compressors can be used as pre-boosters to feed HP compressor units providing discharge pressures of up to 100 bar
• Typical applications are the evacuation of both transport and distribution network pipelines

• Until 5-10 years ago, the “old generation” gas transfer equipment is still available in the market today has driven operators to vent or flare the residual pipeline gas (7 -10 bar or greater). 
• This situation leaves a negative impact on both the corporate image and the environment. 
• New Generation gas transfer equipment is available to avoid the above
• The key benefits for any operator of enhanced gas transfer are:
• Economic
• Environmental

Economic benefit

• The value of the gas now has a greater economic influence on whether to transfer or vent the gas.
• This level of financial incentive has not been available to operators to date
• This provides a significant cost saving on a resource that was previously wasted

Environmental benefit

• Environmentally 1 tonne of CH₄ is equivalent to 21 tonnes of CO₂e
• Ever reducing global emission allocations drive the necessity to reduce CO₂e emissions. 
• Total Gas transfer service will help to achieve and improve upon emissions targets

REFINERY SLUDGE MINIMISATION by HIGH TEMPERATURE THERMAL DESORPTION

Refinery operations produce large amounts of waste sludge, both oily and biological, which eventually must be dealt with. The disposal methods favoured vary from country to country and include landfill and land farming and both on and off-site treatment / incineration.
Implementation of nation’s Environmental legislation, particularly relating to landfill and the control of emissions, encourages the minimisation of waste in order to reduce the environmental impact of disposal procedures. In addition, disposal costs to the producer are continuously increasing resulting in further incentive to evaluate alternative approaches to current practices.

On-site Centrifuging and Thermal Desorption Plants could be a solution to the sludge / oily waste within refineries. The background of practical experience enables us to advise a proven and cost-effective solution to the treatment and disposal of refinery waste sludge.

OBJECTIVES
On-site high temperature thermal desorption equipment fulfils the following objectives:

• effective environmental emissions compliance
• minimisation of hazardous waste
• recovery of hydrocarbons
• production of an inert final product
• on-site processing of waste

High temperature thermal desorption achieves this as follows;

1. Using centrifugation processes alone, the weight and volume reductions obtained are insufficient to optimise the economics of final disposal in a waste site.High temperature thermal desorption results in a further significant waste minimisation, and the final product is an inert waste.
2. High temperature thermal desorption is a physical process during which virtually all the water and hydrocarbons are evaporated, greatly reducing the volume of the end product.
3. With High Temperature Thermal Desorption, the hydrocarbons contained in refinery residues are recovered thereby reducing refinery product losses, and minimising hydrocarbon content of the final product.
4. The High Temperature Thermal Desorption process is non-destructive and uses indirect heating which eliminates production of undesirable combustion products. This ensures that the process complies with stringent air emissions requirements.

• Oily sludge from DAF’s and API separators, tank and cleaning residues
• Primary sludge from water treatment, mixed with biological sludge, tank drainage material
• Other types of sludge from cleaning activities, tertiary treatment, emergency ponds etc.

In cooperation with the manufacturer we support the provision of a turnkey project for the design and construction of the Centrifugation and High Temperature Thermal Desorption Plant.

MASS BALANCE
Centrifuging operations will reduce the weight of the sludge to be treated four to five-fold. Oil recovery for the refinery at this stage is obviously dependent on the initial sludge characteristics and the effectiveness of the centrifugation process.
The High Temperature Thermal Desorption stage that follows provides a further five-fold reduction in waste volume generating a final dry inert powder product and has to be removed from site by a local waste handling company.
The vapour recovery system of the High Temperature Thermal Desorption unit also recovers for the Refinery additional hydrocarbons, which would normally be lost to incineration or landfill.

Feasibility studies can be used in many ways but primarily focus on proposed business ventures. Anyone with a business idea should conduct a feasibility study to determine the viability of their idea before proceeding with the development of a business. Determining early that a business idea will not work saves time, money and frustrations later. A feasible business venture is one where the business will generate adequate cash-flow and profits, withstand the risks it will encounter, remain viable in the long-term and meet the goals of the founders. The venture can be either a start-up business, a new enterprise for an existing business, the purchase of an existing business, an expansion of current business operations, either by entering a new market area or implementation of new technologies. We will provide you guidance on how to proceed with the study and what to include or we can take it out of your hands and execute the study for you. Stage - Gate is part of the process and in general we will follow the following steps:

• Evaluate Alternatives
• Pre-Feasibility Study
• Market Assessment
• Results and Conclusions
• Go/No-Go Decision
• Feasibility Study vs. Business Plan
• Reasons Given Not to Do a Feasibility Study
• Reasons to Do a Feasibility Study
  
  

SEIS Consult Pty Ltd

Pine Mountain, QLD 4306, Australia

Phone +61 (0) 400 363 829

Email: info@seisconsult.com

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