Table of Contents
Introduction
Chemical injection skids are essential components used in various industrial processes, particularly in the oil and gas industry. These modular units are designed to precisely inject chemicals into a system at required pressure and flow rates to optimize process conditions and ensure system integrity.
Purpose of a Chemical Injection Skid
The primary purpose of a chemical injection skid is to deliver specific quantities of chemicals into process systems. The key objectives include corrosion control, scale inhibition, and demulsification, which are critical to maintaining operational efficiency and safety. In quantitative terms, these skids are capable of injecting chemicals with an accuracy level of ±0.5% of full scale, with flow rates that can vary from as low as 0.1 liters per hour (L/h) to several hundred liters per hour, depending on the application.
Key Components
A chemical injection skid typically consists of several key components:
- Pumps: Often diaphragm or plunger pumps capable of handling pressures up to 15,000 psi.
- Storage Tanks: Sized to hold sufficient chemical for a specified number of operating days, usually between 7 and 28 days.
- Controllers: PLC-based systems offering precision control with a feedback loop for flow verification.
- Instrumentation: Flow meters, pressure gauges, and safety valves to ensure the system operates correctly and safely.
Operation and Control
Chemical injection skids operate under strict control protocols to ensure safe and effective chemical dosing. The systems are typically automated, with a PLC providing real-time data monitoring and control, ensuring that chemical injection is adapted to fluctuations in process conditions. Parameters such as temperature, pressure, and flow rate are continuously monitored, with adjustments made automatically to maintain desired chemical concentrations within a ±5% tolerance range.
Depamu Company Solutions
Depamu offers advanced chemical injection solutions featuring high reliability and low maintenance requirements. Their systems are configurable for various industries, with specific focus on the oil and gas sector. Depamu's skids can handle multiple chemicals simultaneously with individual flow rates ranging from 0.5 L/h to 500 L/h. They are equipped with smart control systems that integrate seamlessly with existing plant control infrastructure, providing remote monitoring capabilities and ensuring optimal performance at all times.
References
1. Depamu Chemical Injection Systems Brochure, 2023.
2. Design and Operation of Chemical Injection Skids, Journal of Process Engineering, Vol. 35, 2022.
3. International Standards for Chemical Injection Systems, API Specification 675.