Abstract: A method and system for cooling a reactor effluent stream, such as from a propane dehydrogenation process, with a coil-wound heat exchanger, which provides reduced effluent stream pressure drop and simplifies construction by enabling a single multi-service heat exchanger to provide the necessary cooling duty. The effluent stream is provided at relatively low pressure—in most cases near or below ambient pressure. In some embodiments, the coil-wound heat exchanger provides a shell side flow path for the effluent stream without a substantial change in overall flow direction. Functionality of a steam generator and cooler are also provided in additional bundles within the coil-wound heat exchanger, which further reduces pressure drop.

Abstract: An apparatus and process for winding tubes of a coil wound heat exchanger (CWHE) can include providing an array of supports to facilitate winding of tubes for the CWHE bundle that can facilitate synchronization of a phase of the winding to provide improved heat exchange design that can help improve manufacturing efficiency and flexibility. Embodiments may also provide a CWHE bundle that can have a lower a pressure drop associated with the operation of the CWHE. Some embodiments can utilize pre-formed supports to facilitate synchronized winding of tubes about a central mandrel to provide improved manufacturing flexibility, stability, and precision, for example.

Abstract: A coil wound heat exchanger utilizing a deformable support system and method for making a tube bundle for the same includes a mandrel, a first tube layer formed by winding one or more tubes around the mandrel, and a plurality of supports and spacers circumferentially-arranged in an alternating pattern on an outer surface of the first tube layer. A second tube layer is formed by winding one or more tubes around the mandrel, whereby the second tube layer contacts an opposite side of the supports. A deforming force is applied to the second tube layer in a direction normal to the outer surface of each support, which causes the one or more tubes forming the second tube layer to deform the outer support surface of each support.

Abstract: A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.

Abstract: Described herein are methods and systems for liquefying natural gas using an open-loop natural gas refrigeration cycle; coil wound heat exchanger units suitable for cooling one or more feed streams, such as for example one or more natural gas feed streams, via indirect heat exchange with a gaseous refrigerant; and methods and systems for removing heavy components from a natural gas prior to liquefying the natural gas using an open-loop natural gas refrigeration cycle.

Abstract: A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.

Abstract: A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.

Abstract: Described herein are methods and systems for liquefying natural gas using an open-loop natural gas refrigeration cycle; coil wound heat exchanger units suitable for cooling one or more feed streams, such as for example one or more natural gas feed streams, via indirect heat exchange with a gaseous refrigerant; and methods and systems for removing heavy components from a natural gas prior to liquefying the natural gas using an open-loop natural gas refrigeration cycle.

Abstract: A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.