A method for precisely predicting phase equilibrium from existing phase equilibrium data on the basis of a wide range of phase equilibrium data including binary vapor-liquid equilibrium data; a method or apparatus for designing or controlling a component separator or a refiner using the prediction method; and a program for designing this design or control apparatus. Binary phase equilibrium measurement data is used to calculate an index of proximity ratio to critical points and infinite dilution pressure gradients. The obtained index is correlated with the infinite dilution pressure gradients to newly calculate infinite dilution activity coefficients from the respective index to infinite dilution pressure gradients correlations. The obtained infinite dilution activity coefficients values are used to predict phase equilibrium. Thus, the obtained values are used to design or control a component separator or a refiner, such as a distillation column.

A method for precisely predicting phase equilibrium from existing phase equilibrium data on the basis of a wide range of phase equilibrium data including binary vapor-liquid equilibrium data; a method or apparatus for designing or controlling a component separator or a refiner using the prediction method; and a program for designing this design or control apparatus. Binary phase equilibrium measurement data is used to calculate an index of proximity ratio to critical points and infinite dilution pressure gradients. The obtained index is correlated with the infinite dilution pressure gradients to newly calculate infinite dilution activity coefficients from the respective index to infinite dilution pressure gradients correlations. The obtained infinite dilution activity coefficients values are used to predict phase equilibrium. Thus, the obtained values are used to design or control a component separator or a refiner, such as a distillation column.

Trihalosilane refining device having a divided wall distillation column is disclosed. The trihalosilane refining device can be useful in obtaining high-purity trihalosilane from a feed containing a trihalosilane while consuming a small amount of energy.

A fractionation tray includes a manway unit positioned to cover a manway opening in the fractionation tray. The manway opening is framed by one or more fractionation tray panels having apertures therethrough adjacent to the manway opening. The manway unit includes a first manway panel having: perforations for the passage of fluid; first and second opposing side edges and two opposing end edges; and finger elements extending from the second side edge. The finger elements of the second side edge are received within the apertures adjacent to a first side of the manway opening. The manway unit is configured to open and close by rotation of the finger elements within the apertures.

A system and method for producing liquid hydrocarbons is disclosed. In one embodiment, the system includes at least one renewable power system configured to generate a DC electric power output; at least one water electrolysis system in electrical communication with the renewable power system and configured to utilize the DC electric power to produce a hydrogen output; and a liquid hydrocarbon synthesis system in fluid communication with the water electrolysis system and configured to utilize the hydrogen output and a carbon dioxide feed to produce a liquid hydrocarbon product.

A tray assembly for improved gas/liquid contact in a chemical process tower includes a tray deck and a downcomer. A mixer is provided in the top of the downcomer and a distributor is attached to a floor of the downcomer. The mixer includes at least one mixing baffle parallel to an outlet weir on the tray. The distributor includes a plurality of spaced apart flow directing plates extending downwardly toward and spaced apart from the floor of the downcomer. In combination, the mixer and distributor effect even liquid flow across the surface of a subjacent tray deck.

The main subject of the present invention is a process for installing a section of packing in a casing by means of a device to assist installation of a section of packing, the casing comprising at least one tubular wall extending in a longitudinal direction (L) between two longitudinal ends, and an inner face of which participates in delimiting a receptacle for the section of packing, the tubular wall participating in delimiting an input opening at one of its longitudinal ends, the casing comprising a base wall positioned at the longitudinal end opposite the input opening, the casing being positioned horizontally during the process for installing the section of packing, the process comprising a step of fitting of the device to assist installation on the casing, during which the device to assist installation is secured in the vicinity of the input opening of the casing, a step of positioning of the section of packing relative to the device to assist installation and to the input opening, and at least one step of pushing during which the section of packing is pushed into the receptacle of the casing.

The main subject of the present invention is a process for installing a section of packing in a casing by means of a device to assist installation of a section of packing, the casing comprising at least one tubular wall extending in a longitudinal direction (L) between two longitudinal ends, and an inner face of which participates in delimiting a receptacle for the section of packing, the tubular wall participating in delimiting an input opening at one of its longitudinal ends, the casing comprising a base wall positioned at the longitudinal end opposite the input opening, the casing being positioned horizontally during the process for installing the section of packing, the process comprising a step of fitting of the device to assist installation on the casing, during which the device to assist installation is secured in the vicinity of the input opening of the casing, a step of positioning of the section of packing relative to the device to assist installation and to the input opening, and at least one step of pushing during which the section of packing is pushed into the receptacle of the casing.

An energy saving and emission reduction system for chemical separation and purification process is disclosed. The chemical separation and purification process includes a synthesis section and/or a distillation section and/or a recovery section. The energy saving and emission reduction system includes an energy comprehensive utilization maximizing energy saving module. The energy comprehensive utilization maximizing energy saving module comprehensively evaluates the chemical separation and purification process, and acquires a lowest energy consumption value according to initial and final material flow parameters. Then energy integration optimization and energy saving technical modification are performed on the synthesis section and/or distillation section and/or recovery section according to the lowest energy consumption value. The disclosure involves a comprehensive and extensive energy saving and emission reduction system for chemical separation and purification process, and has achieved good environmental benefits.

An energy saving and emission reduction system for chemical separation and purification process is disclosed. The chemical separation and purification process includes a synthesis section and/or a distillation section and/or a recovery section. The energy saving and emission reduction system includes an energy comprehensive utilization maximizing energy saving module. The energy comprehensive utilization maximizing energy saving module comprehensively evaluates the chemical separation and purification process, and acquires a lowest energy consumption value according to initial and final material flow parameters. Then energy integration optimization and energy saving technical modification are performed on the synthesis section and/or distillation section and/or recovery section according to the lowest energy consumption value. The disclosure involves a comprehensive and extensive energy saving and emission reduction system for chemical separation and purification process, and has achieved good environmental benefits.