Dichloropropane and chlorine-containing volume condensation solutions

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Dichloropropane is used as a chemical solvent in various applications. Due to the presence of chloride ions and the corrosive effect of free chlorine, the corrosion resistance of conventional materials has always been a factor that affects the development and use of equipment. Titanium exhibits excellent corrosion resistance to chloride ions present in dichloropropane, making it highly suitable for use in condensation processes involving this solvent. Some companies use titanium tubes to construct shell-and-tube condensers for such applications. The conventional shell-and-tube design does not perform well in condensation processes, especially those under negative pressure, due to structural limitations. As a result, spiral tube condensers have traditionally been the preferred choice for low-pressure and negative-pressure condensation applications; these condensers feature elongated heat exchange tubes arranged in a coiled pattern, which creates a larger distance between the flow paths in the shell side and the tube side. This arrangement allows gaseous dichloropropane to flow into the tube side, enabling more thorough heat exchange and condensation. As a result, less non-condensable gas remains at the end of the process, thereby reducing solvent loss； By combining the advantages of titanium materials and coil tube heat exchangers, the titanium coil tube heat exchangers developed by our company are highly suitable for use in the condensation and recovery of dichloropropane solvents. They not only address the issue of corrosion resistance of the equipment in chlorine-containing environments but also solve the technical challenge of achieving rapid and thorough condensation under normal, low, and negative pressure conditions ； By arranging multiple layers of fine tubes, the flow area within the tube side can be increased, thereby addressing the flow issues associated with the volume expansion of solvent gases under low-pressure or even negative-pressure conditions ； The multi-layer spiral arrangement allows the flow cross-section of the shell-side cooling water to be reduced, thereby increasing the flow velocity in the shell side and enhancing the turbulence of the fluid, which in turn boosts the overall heat transfer efficiency ； Our company specializes in spiral-threaded tube heat exchangers made from various materials. Currently, we can produce stainless steel spiral tube heat exchangers and titanium spiral tube heat exchangers, which are suitable for brine cooling applications as well as the condensation and recovery of chlorinated solvents ；