The Chemical Injection Quill is a crucial component designed for the precise and efficient introduction of chemicals into process pipelines. This device ensures uniform dispersion of chemicals within the central stream of the pipeline, enhancing the effectiveness of the chemical treatment and preventing the concentrated chemicals from damaging the pipeline walls.

1. Construction and Specifications

Material of Construction:

• The body of the quill is made from CPVC Corzan which offers excellent chemical resistance and is suitable for high-temperature applications up to 210°F (98°C).
• Hastelloy C 276 for critical components such as the check ball and spring, providing outstanding resistance to corrosion and mechanical stresses.

Dimensions:

• Insertion Length. 2 – 5/8” (67 mm)
• Overall Length. 6″ (152 mm)
• Discharge Orifice. 1/8″ (3.17 mm)

Connections:

• Chemical Connection. 1/2″, threaded NPT male as per ANSI/ASME standards.
• Process Connection. Also 1/2″, featuring a threaded NPT male configuration for seamless integration into existing systems.

2. Features of Chemical Injection Quill

Check Valve System

The system features:

• Non-resilient CPVC Corzan seat. This material choice is crucial for its chemical resistance and durability, ensuring the valve seat withstands the aggressive chemicals typically used in pipeline systems.
• Hastelloy C 276 components. Both the check ball and spring are made from Hastelloy C 276, a nickel-molybdenum-chromium superalloy known for its superior corrosion resistance. This material ensures that the valve components can endure highly corrosive environments without degrading, thus maintaining a tight seal and preventing any backflow of the process fluid into the chemical supply.

Pressure and Temperature Tolerance

• Maximum Pressure. It can handle pressures up to 150 PSIG, making it suitable for a wide range of industrial applications where varying pressure levels are common.
• Temperature Capability. With a maximum temperature tolerance of 210°F (98°C), the quill can perform reliably in environments that exceed normal ambient temperatures. Which is essential for processes involving heated fluids or operating in high-temperature settings.

Ease of Installation

Designed with user convenience in mind, the quill incorporates several features to simplify installation:

• Hex-shaped Body. The distinct hexagonal design of the quill body allows for easy grip and adjustment with standard wrenches, facilitating quick and secure installation.
• Welded Rings. To enhance security and stability, the quill has two rings welded directly to the body. These rings prevent the quill from unscrewing from the pipeline under vibration or when subjected to the dynamic forces within the pipeline. This feature is critical for maintaining a reliable and leak-free connection over the lifetime of the system.

Additional Functional Benefits

• Versatility in Application. The quill’s design and materials make it suitable for a diverse range of chemical injection tasks, from simple additive injections to complex multi-chemical processes.
• Longevity and Reliability. The combination of CPVC and Hastelloy materials along with robust construction techniques ensure that the quill not only lasts longer but also operates reliably throughout its service life, reducing the need for frequent replacements and maintenance.
• Safety Enhancements. By preventing chemical backflow, the quill helps in maintaining the integrity of the chemical delivery system, ensuring that high-pressure fluids do not compromise the safety of the operation or the environment.

Enhanced Models and Customization

• The Eddington Triplex Injection Quill is made from Type 316 Stainless Steel and features a three-port system, each with a 1/4″ FNPT chemical inlet connection. This model allows for the simultaneous injection of three different chemicals, suited for complex chemical treatment applications.
• Customization Options. Special quill lengths are available upon request to accommodate specific system requirements. Check valve kits come pre-assembled for immediate installation, and materials like Alloy 20 and Hastelloy can be selected for enhanced corrosion resistance.

3. Applications

Corrosive Liquid Treatment

Handling corrosive liquids requires careful management to protect infrastructure and ensure safe operation. Chemical Injection Quill is instrumental in:

• Protecting Pipeline Interiors. By ensuring that chemicals are thoroughly mixed into the process stream, quills prevent corrosive liquids from settling along the pipe walls where they can cause concentrated wear and corrosion.
• Enhancing Chemical Reaction Times. The immediate and effective dispersion of chemicals into the main flow allows for faster reaction times, which is critical in processes that involve neutralization of acids or bases or other chemical reactions necessary for treating industrial effluents.
• Maintaining System Integrity. Uniform chemical distribution helps maintain the integrity of the pipeline, reducing maintenance costs and downtime caused by corrosion-related failures.

Additional Key Applications

• Water Treatment Facilities. They are essential in the precise dosing and mixing of water treatment chemicals to ensure compliance with health and safety standards.
• Oil and Gas Production. Chemical Injection Quill has usage for injecting corrosion inhibitors directly into pipelines. Which is crucial for protecting the integrity of pipelines that transport crude oil and natural gas.
• Chemical Manufacturing:. In industries where precise chemical dosing is required within reaction vessels or pipelines, quills ensure the accurate delivery and mixing of reactive agents, stabilizers, or catalysts.