Abstract: An absorption method includes: a step for preparing a minute passage; a main circulation step for circulating, in the minute passage, a gas as a first fluid containing a component to be absorbed and an absorbing liquid as a second fluid so that the component to be absorbed is absorbed from the gas into the absorbing liquid; and a sub-circulation step for circulating, while the gas and the absorbing liquid are circulated in the minute passage, a third fluid in the minute passage in order to raise the pressure inside the minute passage.

Abstract: A processing device and processing method that can perform processing of a starting material fluid while favorably controlling the processing temperature of same. The processing device includes: a processing member that leads in the starting material fluid and processes same therewithin; and a processing tank that houses the processing member and retains the processed processing products. The processing member includes: a minute duct provided therewithin and causes the flow-through of the starting material fluid; and a heat medium duct that causes the flow-through of a heat medium having a different temperature from that of the starting material fluid flowing through the minute duct. The minute duct and the heat medium duct are separated from each other so that heat exchange is possible between the starting material fluid and heat medium flowing through.

Abstract: A fluid path structure in which the flow rate of fluid flowing in each flow path is equal to each other and in which each flow path has an increased flexibility in shape. The flow path structure has flow paths into which fluid is introduced. The flow paths include flow paths having different flow path lengths. The equivalent diameter of each part of each fluid path is set according to the flow path length of the fluid path so that the entire pressure loss of each flow path is equal to each other.

Abstract: Provided are a processing device (1) and a processing method that enable an efficient chemical operation by means of reducing the time for separating into individual starting material fluids a mixture of starting material fluids that had once been fractionated. The processing device (1) is provided with: a separation tank (5) that contacts together a first and second starting material fluid (2a, 2b) that differ in specific gravity, performing a chemical operation at the portion at which both starting material fluids contact, and houses the first and second starting material fluids (2a, 2b) that are separated vertically; and a flow path forming member (6) that is disposed within the separation tank (5) and forms a plurality of minute ducts (7) for causing the upper starting material fluid (2a) layer to contact the lower starting material fluid (2b) layer.

Abstract: In an operation method of a multi-flow passage device, and a multi-flow passage of the present invention, blockage detection of a reaction flow passage can be readily performed and cleaning of the reaction passage can be easily performed. The operation method of the multi-flow passage device of the present invention is an operation method of a multi-flow passage device 1 formed with a reaction flow passage 20 for producing a reaction product S by allowing raw material fluids Q, R to flow and making chemical reaction, the method including steps of: partitioning the reaction flow passage 20 into a plurality of sections; and allowing the raw material fluids Q, R to flow in the reaction flow passage 20 and measuring pressure of the raw material fluids Q, R or the reaction product S flowing through the respective sections to determine blockage of the sections based on the pressure loss of the respective sections.

Abstract: A reactor and a reaction method are provided with which temperature changes due to a large amount of reaction heat generated immediately after confluence of raw material fluids can be suppressed. A reactor (2) includes reaction passages (22) and temperature control passages (42). Each reaction passage (22) includes first and second supply passage parts (24, 26), a confluence part (30), and a reaction passage part (28) connected in this order from upstream to downstream. Each temperature control passage (42) includes: first temperature control passage parts (44) extending at least along a particular range of the corresponding reaction passage part (28); and a second temperature control passage part (46) connected thereto, which is fewer in number than the first temperature control passage parts (44). Each second temperature control passage part (46) has a cross section area larger than that of each first temperature control passage part (44).

Abstract: To promote mixture of fluids on a plurality of stages, flow channels include a plurality of merging portions which penetrate from a top surface to a back surface of a substrate. An end of each of the sub channels is disposed so as to overlap the main channel at each of positions separated along the direction in which the main channel extends, and each of the merging portions communicates the main channels and the ends of the sub channels with each other, thereby changing a flow direction of the second fluid flowing through the sub channels to the thickness direction of the substrate, and merges the second fluid with the first fluid flowing through the main channels.

Abstract: A plate fin heat exchanger of the present invention includes a heat exchange part including a heat exchange part main body including layers of plural flow passages, and heat transfer members each of which is disposed within each flow passage of the heat exchange part main body to transfer the heat of fluid flowing in each of the flow passages to each partition walls opposed across the flow passage; and sensing parts connected to both the outsides of the heat exchange part respectively. Each of the sensing parts includes plural sealed spaces, and a sensor wall disposed to separate the outermost sealed space from the sealed space on the inner side thereof. The plate fin heat exchanger further includes a detection means for detecting damage of the sensor wall of the sensing part. According to such a structure, external leak of the fluid performing the heat exchange can be prevented while suppressing deterioration of performance or increase in size or weight.

Abstract: A method of operating a microchannel reactor, in which a reaction channel is formed, includes generating a reaction product by causing a chemical reaction in a raw material fluid while causing the same to flow through a reaction channel. If the flow rate of the raw material fluid and/or the reaction product fluid flowing through a reaction channel decreases, a fluid which is inert to the raw material fluid and the reaction product is mixed into the fluid flowing through the reaction channel, in a flow rate corresponding to the decreased flow rate and at a position downstream of the introduction position of the raw material fluid into the reaction channel.

Abstract: A flow passage structure having a plurality of flow passageways therein includes a first junction portion for joining a first fluid introduced into a first inlet path and a second fluid introduced into a second inlet path, a first joined fluid flow passage through which a fluid made by joining both the fluids flows, a branch portion for dividing the fluid flowing in the first joined fluid flow passage into two fluids, a first branch path through which one of the two divided fluids flows, and a second branch path through which the other flows, wherein a corresponding diameter of the first branch path and a corresponding diameter of the second branch path in each of the passageways are smaller than a corresponding diameter of the first joined fluid flow passage in the passageway.

Abstract: A flow channel structure that includes a first inlet path for a first fluid, a second inlet path for a second fluid, a merging portion that merges, in the thickness direction of a substrate, the first fluid and the second fluid, a first merged fluid channel in which both fluids merged in the merging portion flow along a top surface of the substrate, a flow direction altering portion that causes the flow direction of the fluid flowing through the first merged fluid channel to change from the top surface side of the substrate towards the back surface side thereof, and a second merged fluid channel for changing the flow direction of this fluid to flow to the downstream side so that the fluid flowing from the first merged fluid channel through the flow direction altering portion flows along the back surface of the substrate.

Abstract: A flow passage structure is provided with a fluid flow passage that includes a plurality of straight flow passages, a first return bend that connects the downstream end of the straight flow passage through which a fluid flows from a second end surface toward a first end surface among the plurality of straight flow passages to the upstream end of the straight flow passage which is disposed at the downstream side of the straight flow passage and is adjacent to the straight flow passage, and a second return bend that connects the downstream end of the straight flow passage through which the fluid flows from the first end surface toward the second end surface among the plurality of straight flow passages to the upstream end of the straight flow passage which is disposed at the downstream side of the straight flow passage and is adjacent to the straight flow passage.

Abstract: Provided is a method of mixing first and second liquids having mutual solubility inside a mixing flow channel formed by a micro flow channel. This method includes: causing the first and second liquids to be joined to each other inside the mixing flow channel; and forming a slug flow, in which mixing subject cells (60) formed by the joined liquid and insoluble fluid cells (63) formed by an insoluble fluid are alternately arranged, inside a flow channel at the downstream side of an insoluble fluid supply position in a manner such that the insoluble fluid having insolubility with respect to both mixing subject liquids is supplied to the joined liquid flowing through the flow channel in a direction intersecting the flow channel so that the joined liquid is divided with a gap therebetween, thereby mixing the first mixing subject liquid and the second mixing subject liquid contained in each mixing subject cell inside the downstream flow channel.

Abstract: In an operation method of a multi-flow passage device, and a multi-flow passage of the present invention, blockage detection of a reaction flow passage can be readily performed and cleaning of the reaction passage can be easily performed. The operation method of the multi-flow passage device of the present invention is an operation method of a multi-flow passage device 1 formed with a reaction flow passage 20 for producing a reaction product S by allowing raw material fluids Q, R to flow and making chemical reaction, the method including steps of: partitioning the reaction flow passage 20 into a plurality of sections; and allowing the raw material fluids Q, R to flow in the reaction flow passage 20 and measuring pressure of the raw material fluids Q, R or the reaction product S flowing through the respective sections to determine blockage of the sections based on the pressure loss of the respective sections.

Abstract: A reactor includes respective first and second introduction passages for introducing first and second reactants, a merging passage in which the first reactant merges with the second reactant, and a reaction passage in which the two merged reactants react with each other. First and second introduction grooves respectively constituting part of the first and second introduction passages are formed in a first surface of the base of the flow path structure of the reactor, while a reaction groove constituting part of the reaction passage is formed in a second surface of the base. A merging hole constituting part of the merging passage runs from the first surface of the base to the second surface thereof. The downstream end of the first introduction groove and the downstream end of the second introduction groove merge at the merging hole from different directions.

Abstract: An aluminum alloy material having an excellent sea water corrosion resistance comprises an aluminum alloy substrate whose ten-points average surface roughness Rz, which is the average of five greatest peak-to-valley separations on the surface, is controlled at 0.3 ?m or over, an organic phosphonic primer film formed on a surface of the aluminum alloy substrate, and a fluorine resin paint film formed on the primer film and having a dry average thickness of 1 to 100 ?m. A plate heat exchanger having an excellent sea water corrosion resistance is also provided wherein the aluminum alloy material is used as a heat transfer unit using sea water as cooling water.

Abstract: A total solvent use amount is reduced while a final concentration of a specific element of a separation target in a target fluid is reliably decreased to a target value or less. In a separation method, a solvent greater than a theoretical amount of a solvent necessary for decreasing a concentration of a specific element in an extraction remaining liquid supplied from a second extraction stage as an immediately previous stage to the target value is supplied to a third micro channel of a third extraction stage as a final stage, an extraction liquid separated by a third settler of the third extraction stage as the final stage is distributed to a first extraction stage and the second extraction stage, and the extraction liquid distributed to a first micro channel of the first extraction stage and a second micro channel of the second extraction stage are used as solvent.

Abstract: A flow passage structure having a plurality of flow passageways therein includes a first junction portion for joining a first fluid introduced into a first inlet path and a second fluid introduced into a second inlet path, a first joined fluid flow passage through which a fluid made by joining both the fluids flows, a branch portion for dividing the fluid flowing in the first joined fluid flow passage into two fluids, a first branch path through which one of the two divided fluids flows, and a second branch path through which the other flows, wherein a corresponding diameter of the first branch path and a corresponding diameter of the second branch path in each of the passageways are smaller than a corresponding diameter of the first joined fluid flow passage in the passageway.

Abstract: To promote mixture of fluids on a plurality of stages, flow channels include a plurality of merging portions which penetrate from a top surface to a back surface of a substrate. An end of each of the sub channels is disposed so as to overlap the main channel at each of positions separated along the direction in which the main channel extends, and each of the merging portions communicates the main channels and the ends of the sub channels with each other, thereby changing a flow direction of the second fluid flowing through the sub channels to the thickness direction of the substrate, and merges the second fluid with the first fluid flowing through the main channels.

Abstract: Disclosed are an aluminum alloy material and a plate heat exchanger using the aluminum alloy material, both of which have superior corrosion resistance. Specifically, the aluminum alloy material includes an aluminum alloy base material having an anodic oxide layer with an average thickness of 1 to 20 ?m as its surface layer, an organic phosphonic acid primer coating arranged on the surface of the aluminum alloy base material, and a fluorocarbon resin coating arranged on the surface of the organic phosphonic acid primer coating and having an average thickness of 1 to 100 ?m after drying.