Solution for Oil, Gas and Petro Chemical

Solution for Oil, Gas and Petro Chemical

We Provide Several Solution for Oil & Gas and Petrochemical Industries:

• Pre Treatment System for Water Treatment
• Waste Water Treatment
• Produced Water Treatment – CPI / TPI / DAF / IGF / NSF etc.

CPI (Corrugated Plate Interceptors)

CPI is an effective and economical alternative. It is used in industrial wastewater, industrial filtration, oill water separation clarification, separation, and storm water and sewer overflow applications. The unit’s gravity design separates light from heavy materials in a smooth, automatic flow. WTPL CPI’s use plate packing to improve free oil removal. WTPLs designed and manufactured CPI provide the following advantages:

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CPI Working Principals:

• Using principle of difference in gravity
• Suitable for treating oily wastewater
• Separation of free oil from effluent water
• Removing suspended solids from oily water
• High density settles while lower density floats
• Operates with corrugated plates and high flow rate
• Tilted plate packs used to reduce cost and size needed, 45 degree
• Low maintenance as moving parts do not exist

Dissolved Air Flotation (DAF)

DAF (Dissolved Air Flotation) systems are used to remove suspended solids and liquids, such as oil, from water. In this process, water saturated with air is pressurized and then introduced into an atmospheric flotation tank containing the produced water to be treated. As the pressure equalizes, the air is released, forming bubbles. These bubbles attach to the suspended particles, causing them to float to the surface. Once at the surface, the particles are skimmed off for removal.

Process Description

A portion of the treated produced water leaving the DAF tank is recycled and pumped to an air drum, where compressed air is introduced to the water. The water is saturated with sufficient air to ensure optimal saturation. This air-saturated water is then sent to the flotation tank. When introduced to the tank, tiny air bubbles are released. These bubbles attach to the particles that need to be removed, causing them to rise to the surface. A skimmer or weir plate is used to separate the suspended particles from the treated water. Typically, chemicals are injected into the feed water to flocculate the suspended particles. Additionally, natural gas may be used instead of air, depending on the application and location of the facility. WTPL's designed and manufactured DAF systems provide:

Efficient design

• Quick Start-Up and able to handle periodic stoppage
• Customized and standard packages
• Complete skid mounted packages
• ASME coded vessels
• Up to 90% removal of effluent and solid removal
• Minimal Chemical Usage
• Screw conveyor available for heavy solid removal

Produced Water Treatment

The production of oil and gas results in significant quantities of water especially when the wells are nearing maturity. The water must be separated from the oil and gas and be disposed of properly to prevent adversely affecting the environment. Disposing of the water may involve reinjection of the water into the well for disposal or to maintain reservoir pressure. Sometimes the produced water may be disposed onshore or discharged offshore.

WTPL offers a variety of technologies and equipment to meet varying concentration requirements for the proper discharge of produced water. WTPL can design systems required for:

Hydrocyclone Separators

The IGF Filter a Solution for Produced Water

The IGF Filter Process Principle

Dispersed oil may be efficiently removed from water by means of flotation, i.e. by injecting a suitable amount of gas (usually air however, should oxygen not to be added to the treated fluid to limit corrosion then fuel gas or inert gas (nitrogen) can be used instead).

Depending upon the method used to inject gas into the water stream, we may have Dissolved Gas Flotators (DGF) or Induced Gas Flotators (IGF), the latter being less effective but easier to operate and more widely used for Produced Water Treatment. WTPL IGF technology include alternatively the use of injectors or turbines to mix the gas into the water. Both systems being reliable and efficiency proven, the choice to be made considering the conditions at site (type, quantity and conditions of the available gas, disposal facilities for the used gas such as flare, safe location and so on).

Optional Coalescer Pack Equipped IGF

To aid the separation process the IGF is equipped with coalescer packs and diverter plates. Usually, IGF vessels are internally broken down into compartments with each compartments consisting of eductors, coalecser pack and diverter plate. The IGF is also equipped with a deflector plate and an oil bucket. See IGF internal layout draw­ing for further visual clarification.

• Diverter Plates: These plates seperate the IGF compartments. Each separation compartment consists of a pair of eductors and a coalescer pack. The diverter plates not only separate the compartments but also allow the fluid to flow in a predetermined manner. This increases the retention time which aides the proper removal of the free oil particles.
• Eductors: The eductors are static jet pumps which uses water as a motive force to induce gas bubbles into the oily water. The bubbles assist the oil particles to coalesce to form bigger particle which float to the surface to form an oil film.
• Coalescer Pack: Each compartment has a coalescer pack to further assist the formation of larger oil particles. The pack achieves this by increasing the contact surface area of the fluid thus allowing more free oil particles to come together. There are several types of coalescer packs. The plate type is used for this project.
• Deflector Plate: The deflector plate is installed in the vessel with an inclination to force the oil film into the oil bucket. Since oil will float on water restricting the oil film to a portion will create a thicker oil film which can be skimmed into the oil bucket.

WTPL’s designed and manufactured IGF units provide:

Nutshell Filter - Treatment for Produced Water

The Nut Shell Filter

Nutshell Filters

For most applications, first and second stage separation units are sufficient to meet the regulatory discharge requirements. However, when the discharge requirements are more stringent and require lower concentration of oil in water, nutshell filters are utilized. Nutshell filters use a mixture of nutshells as the filter media. Nutshells allow for the oil to collect on the surface of the nutshells while also being able to capture solids.

Process Description

The nutshell filters have a simple process. Oily water enters the vessel where it passes through the nutshells under pressure. The oil and solids get trapped within the filters and the clean water exits the bottom of the vessel. To remove the oil and solids from the filter media, a backwash process is used. The backwash process consists of fluidizing the bed, removing the contaminated water, allowing the filter to settle and finally rinsing the filters to remove any contaminates that may still be present. The process uses at least two filters: one filter online and the second filter is being regenerated and on standby. Depending on your process requirements, WTPL can deter­mine the appropriate number of filters required to provide the most optimized design. WTPL designs and manufactures nutshell filters that provide the following advantages: