This specification relates to operating industrial facilities, for example, crude oil refining facilities or other industrial facilities that include operating plants that process natural gas or recover natural gas liquids.

A natural gas liquid recovery system includes a cold box and a refrigeration system. The refrigeration system includes a primary refrigerant loop in fluid communication with the cold box. The primary refrigerant loop includes a primary refrigerant including a first mixture of hydrocarbons. The refrigeration system includes a secondary refrigerant loop. The secondary refrigerant loop includes a secondary refrigerant including i-butane. The refrigeration system includes a first subcooler configured to transfer heat between the primary refrigerant of the primary refrigerant loop and the secondary refrigerant of the secondary refrigerant loop. The refrigeration system includes a second subcooler downstream of the first subcooler. The second subcooler is configured to transfer heat between the primary refrigerant and a vapor phase of the primary refrigerant. The cold box is configured to receive the primary refrigerant from the second subcooler.

A heat exchanger having a plurality of heat exchange bodies, each heat exchange body having a first inlet configured to receive a first fluid, a first outlet configured to discharge a second fluid, a first distribution means for the first fluid, which is connected to the first inlets of the heat exchange bodies, the first distribution means having at least one main distribution duct, a first discharging means for the second fluid, which is connected to the first outlets of the heat exchange bodies, the first discharging means comprising at least one main discharging duct. The plurality of heat exchange bodies may have a first set of heat exchange bodies mounted in parallel and a second set of heat exchange bodies mounted in parallel.

Provided is a reliquefaction device with which a gas gasified from a liquid can be efficiently reliquefied. A plurality of flow passages include: a mixing flow passage which is connected to the downstream end section of one among a liquid flow passage and a gas flow passage and allows a fluid mixture to flow so that a reliquefaction promoting liquid flowing through the liquid flow passage and a reliquefaction target gas flowing through the gas flow passage are mixed and the reliquefaction of the reliquefaction target gas is promoted by direct heat exchange; and a gas cooling flow passage which allows a coolant to flow and cool the reliquefaction target gas by means of indirect heat exchange with the reliquefaction target gas through a separation wall, thereby suppressing the gasification of the reliquefaction promoting liquid when the reliquefaction target gas is mixed with the reliquefaction promoting liquid flowing through the liquid flow passage.

In a method for producing a series of at least a first and a second plate and fin heat exchanger, each having at least one fluid distribution tank capping at least some of the openings of the matrix unit and which is connected to a pipe, the tank is partitioned into several compartments using at least one partition, so as to distribute the number of openings assigned to a first fluid and to a second fluid, the partition being designed to divide the tank into several compartments which are each connected to a pipe for the passage of the first fluid or of the second fluid and which each communicate with a number of openings that varies according to the configuration adopted by the at least one partition, for the exchanger of the series.

A device for distributing a fluid to a processing component includes a vessel having an inlet port for receiving a stream of fluid. A vapor outlet line is in fluid communication with the fluid processing component and has a vapor outlet line inlet in fluid communication with the headspace of the vessel. A liquid outlet line has a liquid outlet line inlet in fluid communication with a liquid side of the vessel and the fluid processing component. A bypass line has a bypass line inlet in fluid communication with the liquid side of the vessel and a bypass line outlet in fluid communication with the vapor outlet line and is configured so that liquid travels through the bypass line and into the vapor outlet line when a liquid level within the vessel reaches a predetermined level so that a headspace is maintained above the liquid level as liquid enters the vessel through the inlet port, and liquid does not travel from the bypass line into the vapor outlet line when a liquid level within the vessel is below the predetermined level.

The invention relates to a plate heat exchanger (10) having a plate heat exchanger block (11), which has a plurality of partitions (4, 5) arranged parallel to one another in the form of separating plates which form a plurality of heat exchange passages (1a, 1b) for fluids which are to be brought into indirect heat exchange relationship with one another. The heat exchange passages are closed off from the outside by lateral strips (8), and each heat exchange passage (1a, 1b) has an inlet (9) for inflow of a fluid and an outlet (19) for outflow of the fluid. According to the invention, one or more partitions (4, 5) and/or one or more heat-conducting elements (2, 3) in each case have a coating (41) made of a heat-insulating material. The invention further relates to a method for producing a polymer laminate and to a method for joining prefabricated polymer components to each other.

A heat exchanger of the brazed plate and fin type, including a plurality of plates arranged in a mutually parallel manner so as to define at least one set of passages for a first fluid configured to exchange heat with at least a second fluid to flow through, the passages extending in a longitudinal direction and a lateral direction perpendicular to said longitudinal direction, each passage being divided, in the longitudinal direction, into at least one distribution zone and one heat-exchange zone, the at least one distribution zone of a passage comprising a distribution element, said distribution element including a plurality of dividing walls arranged so as to divide said distribution zone into a plurality of channels for the first fluid to flow through.

A dual-mode LNG liquefier arrangement that is configurable to operate in a first mode broadly characterized as a low pressure, liquid nitrogen add LNG liquefier without turbo-expansion or a second mode broadly characterized as a low pressure, liquid nitrogen add LNG liquefier with turbo-expansion.

The invention relates to a heat exchanger (1), comprising: a shell (2) surrounding a shell space (3) of the heat exchanger (1), wherein the shell space (3) is designed to receive a fluid first medium (M); a core tube (4) extending in the shell space (3); a tube bundle (5) having several tubes (50) wound around the core tube (4), wherein the tube bundle (5) is designed to receive at least one fluid second medium (M) so that heat can be transferred indirectly between the first medium (M) and the at least one second medium (M); and a liquid distributor (6), arranged above the tube bundle (5) in the shell space (3), for applying a liquid phase (F) of the first medium (M) to the tube bundle (5), wherein the liquid distributor (6) has distributor arms (60) projecting in the radial direction (R) from the core tube (3); an annular channel (61) extending above the distributor arms (60) in a circumferential direction (U) of the shell (2), and a collector tank (62) formed by the core tube (4), wherein the annular channel (61) and the collector tank (62) are each designed to collect the first medium (M). According to the invention, it is provided that the distributor arms (60) for applying the liquid phase (F) of the first medium (M) to the tube bundle (5) form at least one first container (60a) and at least one second container (60b) separated from the first container (60a).