Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Titanium tetrachloride (TiCl₄) is a critical intermediate medium in the production of chloride-process titanium dioxide and titanium sponge. The medium is highly volatile and undergoes violent hydrolysis upon contact with water, generating hydrogen chloride. The process imposes stringent requirements on the sealing integrity and leak prevention capability of transfer equipment, making the API 685 sealless magnetic drive pump the preferred equipment for this service condition. I. Core Requirements for Magnetic Drive Pumps in TiCl₄ Service Conditions Traditional centrifugal pumps with mechanical seals present safety hazards of medium leakage and moisture ingress. The API 685 magnetic drive pump transmits torque through magnetic coupling, eliminating the shaft seal structure and achieving fully sealed medium transfer, making it suitable for toxic, volatile, and high-hazard chemical medium transfer scenarios. The operational reliability of magnetic drive pumps is determined by the internal circulation system. The internal circulation loop serves to dissipate heat from the containment shell while providing lubrication and cooling for the SiC silicon carbide sliding bearings. During the design phase, the loop pressure-temperature distribution must be verified to avoid excessive containment shell temperature rise and the risk of medium flash evaporation. In TiCl₄ service conditions, the of the circulation flow path must be ensured—once hydrolyzed solid particles enter the bearing clearance, they can cause wear, flow path blockage, and localized overtemperature failures. II. Key Points for Material and Structural Selection Wetted parts should be made of titanium or nickel-based corrosion-resistant alloys based on medium impurities, moisture content, and temperature; silicon carbide (SiC) is the preferred material for sliding bearings. For metallic containment shells, eddy current loss and heat generation must be carefully evaluated. By optimizing material structure and enhancing internal circulation cooling, temperature rise and power consumption can reduced to meet API 685 standard design specifications. III. Jiangsu Haifa Customized Solution for TiCl₄ Magnetic Drive Pumps Jiangsu Ha Machinery Manufacturing Co., Ltd. specializes in the R&D and manufacturing of API 610 and API 685 chemical process pumps and special-media pumps. For highly corrosive chloride media such as titanium tetrachloride, the company has completed specialized designs for the magnetic coupling structure, internal circulation loop, SiC bearings, and corrosion-resistant wetted parts. Selection for TiCl₄ projects should not focus solely on the leak-free indicator. A comprehensive evaluation must consider medium purity, solids content, operating temperature, suction pressure, NPSH (net positive suction head), and start-stop conditions to deliver a complete customized pump package solution. For more details on API 685 magnetic drive pump products: www.jslgpump.com Technical References on Titanium Tetrachloride (TiCl₄) Transfer Technology: Leak-Free Design and Internal Circulation Optimization of API 685 Magnetic Drive Pumps [1] API Standard 685—Sealless Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries [2] API Standard 610—Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries [3] Gülich J.F. Centrifugal Pumps, [4] Titanium Metals Handbook—Cor Resistance of Titanium in Chloride Media

www.jslgpump.com