Changyu Caustic Circulation Pump Exported to Brazil, Providing Customized Mechanical Seal Flush Plan

    A chemical company in Brazil specializes in producing high-purity chemical raw materials, and they have stringent requirements for the reliability and corrosion resistance of pumps used in caustic liquid transport. When expanding their production line, the company needed a reliable caustic liquid circulation system, with the pump being one of the key pieces of equipment. Due to the high corrosiveness of the caustic liquid, the pump’s sealing performance was critically important.

    Client Requirements

1. Efficient Transport of Caustic Liquid: A pump was needed that could operate stably and efficiently over long periods, ensuring high-performance output during continuous operation.
2.  Corrosion Resistance: The pump material needed to have excellent corrosion resistance to withstand the long-term exposure to strong caustic environments.
3. Customized Mechanical Seal Plan: To extend the lifespan of the equipment and ensure the safety of the process, the client requested a customized flushing plan for the pump's mechanical seal, ensuring stable operation in the highly corrosive environment and reducing maintenance frequency.
4. Environmental Compliance: The client also required the solution to minimize environmental impact during operation, ensuring safe disposal of waste liquid.

    Solution

    Based on the client's requirements, Changyu Pump Valve recommended the Changyu Caustic Liquid Circulation Pump, and provided the following customized solution to meet the specific operating conditions of the Brazilian chemical company:

1. Pump Selection

• The Changyu Caustic Liquid Circulation Pump is made from high-performance corrosion-resistant alloy, specifically designed for handling strongly caustic chemical liquids. It offers excellent chemical resistance and high reliability, suitable for long-term operation.
• Through professional fluid simulation analysis, the pump’s flow rate and head were ensured to meet the production requirements, guaranteeing efficiency and system stability.

      2.Customized Mechanical Seal Flush Plan:

• API 682 Plan 54 Customized Flush System: Based on the client’s requirements, a pressurized external flushing system was designed to provide continuous cooling liquid to the mechanical seal, maintaining proper temperature and pressure in the seal chamber. The pressurized external cooling flow effectively reduced the corrosive impact of the caustic liquid on the seal.
• Customized Dual-face Mechanical Seal: A dual-face mechanical seal was equipped to enhance the corrosion resistance and stability of the seal. The customized design extended the seal’s lifespan, further reducing maintenance needs.
• Eco-friendly Design: The flush liquid used in the system is an environmentally friendly fluid that meets international environmental standards, ensuring that the pump operation does not harm the environment. Additionally, the system recycles the cooling liquid, reducing consumption.

    3.Installation and Commissioning:

• Changyu’s technical team assisted throughout the installation and commissioning process to ensure the pump was quickly put into operation at the client’s site with stable performance.
• Through a remote monitoring system, the pump’s operating status can be tracked in real time, enabling continuous technical support to ensure efficient operation.

    Results and Client Feedback

    Since the pump was put into operation, the client has reported excellent performance during continuous operation, fully meeting the production requirements. The customized mechanical seal flush system significantly reduced maintenance frequency and cut downtime costs. At the same time, the use of eco-friendly flush liquids helped the client reduce waste discharge, aligning with their environmental policies.

    The client specifically noted that the reliability of the mechanical seal and the overall corrosion resistance of the pump exceeded expectations, providing strong support for the continuous and efficient operation of the production line. Based on the success of this project, the client has decided to pursue further long-term cooperation with Changyu Pump Valve.

    Client Feedback: “The caustic liquid circulation pump and the customized seal flushing solution provided by Changyu perfectly met our requirements. The stability of the mechanical seal greatly enhanced the equipment's operational efficiency and saved us on maintenance costs. We are very satisfied with this collaboration and look forward to more cooperation opportunities in the future.” — Production Manager, Brazilian Chemical Company