Abstract: Provided is a carbon dioxide recovery system including: an absorption tower; a regeneration tower that takes in an absorbing solution that has absorbed carbon dioxide at the absorption tower, and separates the carbon dioxide from the absorbing solution using regenerated steam to regenerate the absorbing solution; first supply piping that supplies the absorbing solution regenerated in the regeneration tower to the absorption tower; a reclaimer that takes in part of the absorbing solution regenerated in the regeneration tower to remove degraded material and supplies the absorbing solution from which the degraded material has been removed to the regeneration tower or the first supply piping; an in-line viscometer that measures a viscosity of the absorbing solution flowing through the first supply piping; and a controller that controls an amount of the absorbing solution processed by the reclaimer based on the viscosity measured by the in-line viscometer.

Abstract: A gas-liquid contact apparatus has a gas-liquid contact unit, a liquid supply system, and a gas supply system. The gas-liquid contact unit includes a plurality of stages which are allocated so as to be arranged in the lateral direction. Each of the plurality of stages includes a plurality of vertical flat plates arranged parallel to each other at intervals. The liquid supply system supplies a liquid to the gas-liquid contact unit, and causes the liquid to be circulated along the arrangement of the plurality of stages successively. The gas supply system supplies a gas to the gas-liquid contact unit, and causes the gas to be circulated along the arrangement of the plurality of stages successively. The supplied liquid flows down on the plurality of vertical flat plates in each of the plurality of stages, and comes into contact with the supplied gas.

Abstract: The packing has one or more thin-layer packing elements that are installed upright, the packing element having a main body portion with a planar liquid film formation surface, and one or more wall portions that are provided upright relative to the liquid film formation surface along a linear direction. The side surface of each wall portion has a curved portion at the base thereof connected to the liquid film formation surface, the curved portion curving so as to continue into the liquid film formation surface.

Abstract: A hydrophilized material has a surface provided with surface roughness that arithmetic mean roughness is 0.3 ?m to 1.0 ?m and mean width of roughness profile elements is 0.1 mm or less. A hydrophilized member that contacts a liquid is at least partially made of the hydrophilized material. The hydrophilized member is applicable to a gas-liquid contact apparatus having a gas-liquid contact section, a liquid supply system, and a gas supply system, to constitute the gas-liquid contact section as a packing element. Wettability imparted due to the surface roughness is exhibited continuously.

Abstract: A gas-liquid contact apparatus has a gas-liquid contact unit, a liquid supply system, and a gas supply system. The gas-liquid contact unit includes a plurality of stages which are allocated so as to be arranged in the lateral direction. Each of the plurality of stages includes a plurality of vertical flat plates arranged parallel to each other at intervals. The liquid supply system supplies a liquid to the gas-liquid contact unit, and causes the liquid to be circulated along the arrangement of the plurality of stages successively. The gas supply system supplies a gas to the gas-liquid contact unit, and causes the gas to be circulated along the arrangement of the plurality of stages successively. The supplied liquid flows down on the plurality of vertical flat plates in each of the plurality of stages, and comes into contact with the supplied gas.

Abstract: A packing has a plurality of sheet materials spaced and arranged in parallel, and liquid flows along the flat surface thereof in a standing use state. Each sheet material has at least one member group including a plurality of support members arranged such that the upper end of the uppermost support member corresponds to the upper end of the sheet material and the lower end of the lowermost support member corresponds to the lower end of the sheet material. Each support member has a pair of support walls parallel to the liquid flow direction and perpendicular to the sheet material surface, and a bridging part connecting the support walls. A sandwiching structure is formed that one sheet material is held by at least one support member attached thereto and at least one support member attached to an adjacent sheet material, and it extends linearly through the plurality of sheet materials.

Abstract: A hydrophilized material has a surface provided with surface roughness that arithmetic mean roughness is 0.3 ?m to 1.0 ?m and mean width of roughness profile elements is 0.1 mm or less. A hydrophilized member that contacts a liquid is at least partially made of the hydrophilized material. The hydrophilized member is applicable to a gas-liquid contact apparatus having a gas-liquid contact section, a liquid supply system, and a gas supply system, to constitute the gas-liquid contact section as a packing element. Wettability imparted due to the surface roughness is exhibited continuously.

Abstract: The packing has one or more thin-layer packing elements that are installed upright, the packing element having a main body portion with a planar liquid film formation surface, and one or more wall portions that are provided upright relative to the liquid film formation surface along a linear direction. The side surface of each wall portion has a curved portion at the base thereof connected to the liquid film formation surface, the curved portion curbing so as to continue into the liquid film formation surface.

Abstract: A packing has a plurality of sheet materials spaced and arranged in parallel, and liquid flows along the flat surface thereof in a standing use state. Each sheet material has at least one member group including a plurality of support members arranged such that the upper end of the uppermost support member corresponds to the upper end of the sheet material and the lower end of the lowermost support member corresponds to the lower end of the sheet material. Each support member has a pair of support walls parallel to the liquid flow direction and perpendicular to the sheet material surface, and a bridging part connecting the support walls. A sandwiching structure is formed that one sheet material is held by at least one support member attached thereto and at least one support member attached to an adjacent sheet material, and it extends linearly through the plurality of sheet materials.

Abstract: The carbon dioxide recovery method and apparatus are capable of reducing energy for regenerating the absorbing liquid and operating cost. An absorption column has first and second absorbing sections that a gas is supplied through the first absorbing section to the second absorbing section and the absorbing liquid absorbs carbon dioxide. A regeneration column regenerating the absorbing liquid has first and second regenerating sections. The first regenerating section has an external heating implement and the second regenerating section is heated by the gas discharged from the first regeneration section. Circulation mechanism has a circulation system circulating the absorbing liquid between the second absorbing section and the first regenerating section, and a branch path branched from the circulation system.

Abstract: A recovery apparatus of carbon dioxide includes: an absorption column contacting a carbon dioxide-containing gas into contact with an absorbing liquid and allowing the absorbing liquid to absorb carbon dioxide; a regeneration column for regenerating the absorbing liquid to release carbon dioxide; a circulation system which circulates the absorbing liquid to flow from the absorption column and return to the absorption column through the regeneration column; and a steam supply system which generates steam available for a heat source that regenerates the absorbing liquid, using the absorbing liquid that returns to the absorption column and/or the absorbing liquid in the absorption column, and supplies the steam to the regeneration column. High temperature steam is generated from the absorbing liquid and is provided to the regeneration column to use as a heat source for regenerating the absorbing liquid.

Abstract: The carbon dioxide recovery method and apparatus are capable of reducing regeneration energy and operating cost, and structurally advantageous. An absorber has first and second absorbing sections where a gas is supplied through the first absorbing section to the second absorbing section. A regenerator has first and second regenerating sections. The first regenerating section has an external heater and the second regenerating section is heated by the gas discharged from the first regeneration section. The absorbing liquid circulates between the second absorbing section and the first regenerating section in a circulation system, and a branch system allows a part of the absorbing liquid to flows from the second absorbing section through the first absorbing section and the second regenerating section successively to the first regenerating section. The recovery gas discharged is compressed, and its heat is recovered and supplied to the regenerator by heat exchange with the absorbing liquid.

Abstract: The carbon dioxide recovery method and apparatus are capable of reducing energy for regenerating the absorbing liquid and operating cost. An absorption column has first and second absorbing sections that a gas is supplied through the first absorbing section to the second absorbing section and the absorbing liquid absorbs carbon dioxide. A regeneration column regenerating the absorbing liquid has first and second regenerating sections. The first regenerating section has an external heating implement and the second regenerating section is heated by the gas discharged from the first regeneration section. Circulation mechanism has a circulation system circulating the absorbing liquid between the second absorbing section and the first regenerating section, and a branch path branched from the circulation system.

Abstract: A carbon dioxide recovery method and a recovery apparatus are capable of decreasing energy for regenerating an absorbing liquid to reduce operating cost. The apparatus has an absorption column that the absorbing liquid absorbs carbon dioxide of a gas, a regeneration column heating and regenerating the absorbing liquid with discharge of carbon dioxide, and a circulation system circulating the absorbing liquid. The absorbing column has first and second absorbing sections, and gas is supplied to the second absorbing section through the first absorbing section. The regeneration column has a first regeneration section having an external heating implement and a second regeneration section heated by the gas discharged from the first regeneration section. The circulation system has a first circulation path circulating between the first absorption section and the second regeneration section and a second circulation path circulating between the second absorption section and the first regeneration section, separately.

Abstract: Change in the amount of an absorbing liquid is detected to restore the original amount, and carbon dioxide is stably recovered from exhaust gas. The carbon dioxide recovery apparatus has: an absorber where a gas contacts with an absorbing liquid that absorbs carbon dioxide contained in the gas; and a regenerator where the absorbing liquid after absorption is heated to release carbon dioxide and is regenerated. Water vapor in the carbon dioxide-containing recovery gas, discharged from the regenerator, is condensed by recovery equipment, and the condensed water is supplied at a fixed flow rate to the regenerator. A liquid level meter detects the liquid level changing with quantity fluctuations of the absorbing liquid. If the liquid level is lowered, a restoration system restores the original liquid level, using the condensed water. The condensed water sufficient for restoring the liquid level is supplied near the liquid level meter.

Abstract: A recovery apparatus of carbon dioxide comprises: an absorption column which brings a gas containing carbon dioxide into contact with an absorbing liquid and allows the absorbing liquid to absorb carbon dioxide; a regeneration column for regenerating the absorbing liquid, by causing the absorbing liquid having carbon dioxide absorbed in the absorption column to release carbon dioxide; a circulation system which circulates the absorbing liquid so that the absorbing liquid flowing from the absorption column returns to the absorption column through the regeneration column; and a steam supply system which generates steam available for a heat source that regenerates the absorbing liquid, using at least one of the absorbing liquid that returns to the absorption column by the circulation system and the absorbing liquid in the absorption column, and supplies the steam to the regeneration column.

Abstract: A ceramic heat exchanger 3 is provided for heat-exchanging of a gasification gas (600-900° C.) containing tar and produced in a gasification furnace 1 with a reformed gasification gas (1100-1500° C.) from a reforming furnace 2 for temperature raising before introduction of the gasification gas into the reforming furnace.