Abstract: A fluid state estimation system includes: a learning device that learns an estimation model for estimating a state of a fluid in at least any one of an inside of a component of a plant, an outside of the component of the plant and an inside of a building of the plant, an outside of the building of the plant and an inside of a site of the plant, and a periphery of an outside of the site of the plant; and an estimation device that estimates a state of a fluid using the estimation model learned by the learning device. The estimation model gets a value of an input variable, and outputs a value of fluid state information representing a state of a fluid.

Abstract: An air conditioning system (1) includes a carbon dioxide separation device (20) configured to separate some or all of carbon dioxide from air that contains carbon dioxide, an electrolytic reduction device (30) configured to generate a hydrocarbon and oxygen using the separated carbon dioxide as a raw material, and an oxygen supply amount control device (40) configured to supply some or all of the oxygen generated by the electrolytic reduction device (30) to a space to be processed (10).

Abstract: A method for determining an operating condition of a liquefied natural gas plant (2) includes preparing a training model (88) generated by machine learning using training data in which operating conditions data including a composition of a feed gas, a composition of a mixed refrigerant, and an ambient temperature and operation result data including a production efficiency of a liquefied product containing liquefied natural gas and a heavy component of the feed gas are associated together; and determining, as one new operating condition, a composition of the mixed refrigerant that optimizes a production efficiency of the liquefied natural gas predicted by the training model (88) from a latest composition of the feed gas in the liquefied natural gas plant (2) and a latest ambient temperature.

Abstract: The method comprises a mixing step of obtaining a raw material mixed gas by adding hydrogen to the synthesis gas; a reaction step of obtaining a mixed gas product containing paraxylene by introducing the raw material mixed gas into a reactor and bringing it into contact with a paraxylene synthesis catalyst under heating and pressurization; a separation step of separating the mixed gas product into a gas phase composed of non-condensable components, an oil phase containing paraxylene, and an aqueous phase containing water-soluble components by cooling the mixed gas product to condense high-boiling point components; and a purification step of purifying the oil phase to obtain paraxylene, wherein the mixing step adds hydrogen so that the obtained raw material mixed gas has a composition in which an R value defined by the following formula (1) falls within a range of 0.7 or more and 2.1 or less: R = N H ? 2 - N CO ? 2 N CO + N CO ? 2 .

Abstract: An information processing device including a processor that acquires an operating parameter regarding a reaction device that performs a predetermined chemical reaction and information regarding a substance used in the chemical reaction in the reaction device, the information processing device determines a parameter of a first reaction state predicted as the reaction state of the substance when the chemical reaction is performed with the operating parameter in the reaction device, the information processing device learns a prediction model that outputs a parameter of a second reaction state that is a reaction state of the substance in response to inputting information regarding the substance and the operating parameter by using the acquired information regarding the substance, the acquired operating parameter and the parameter of the first reaction state as learning data, and the information processing device stores the learned prediction model in a storage unit.

Abstract: The present disclosure provides a cathode electrode in which selectivity of hydrogen decreases and selectivity of a carbon dioxide reduction product increases in a catalytic reaction producing carbon monoxide, an olefinic hydrocarbon such as ethylene, and an alcohol such as ethanol by a reduction reaction of carbon dioxide. A cathode electrode that electrically reduces carbon dioxide, including: a first layer containing cuprous oxide, copper, and at least one additional metal element selected from the group consisting of silver, gold, zinc, cadmium, and tin; and a second layer formed on the first layer and containing a constituent element composed of at least one metal element selected from the group consisting of copper, silver, gold, zinc, cadmium, and tin.

Abstract: An object is to reduce an overall cost including the construction cost of a plant and its raw material and energy costs, and also reduce carbon dioxide emissions. An aromatic compound manufacturing method is characterized in that the method comprises: a step A of manufacturing an aromatic compound mixture from a raw material mixture gas containing carbon dioxide or carbon monoxide or both of these and hydrogen; a step B of manufacturing an aromatic compound mixture by a cracked petroleum-derived BTX manufacturing process, a reformate-derived BTX manufacturing process, and a synthetic BTX manufacturing process using naphtha as a raw material; a step C of combining the aromatic compound mixture manufactured in the step A and the aromatic compound mixture manufactured in the step B; and a step D of separating a desired aromatic compound from the aromatic compound mixture combined in the step C and purifying the desired aromatic compound.

Abstract: To safely start and operate electrical devices accommodated in a local electrical room located in a hazardous area, a plant module (2) includes: a group of plant equipment (6) that constitutes a plant; a local electrical room (5) located in a hazardous area (31) defined by presence of combustible gas and accommodating a power device configured to supply electric power to the group of plant equipment (6); a structure (21) supporting the group of plant equipment (6) and the local electrical room (5); and an outside air supply device (64) having explosion-proof properties and arranged at the local electrical room (5) to supply outside air to an inside thereof, wherein the plant module (2) is configured to supply the electric power to the outside air supply device (64) from a non-hazardous area.

Abstract: The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.

Abstract: A plant operating condition setting support system for supporting the setting of an operating condition of a plant that performs a process formed by devices includes: control devices that subject controlled devices to feedback control respectively; and an operating condition setting support device that provides integrated support for the setting of the control devices, which perform feedback control tasks respectively and independently. The operating condition setting support device includes: a measured value multiple acquisition unit that acquires measured values indicating states of the controlled devices, respectively; and a control device adjustment parameter determination unit that determines, based on the measured values acquired, control device adjustment parameters used by each of the control devices to determine manipulation variables for control that should be input to the controlled devices, according to a policy learned by deep reinforcement learning.

Abstract: A management system for managing an operating condition for a pipeline that processes fluid, the management system including a processor configured to: obtain measurement values from sensors provided in devices that constitute the pipeline; and estimate a maximum processing amount of the fluid in the entire pipeline in operation by inputting the measurement values obtained from the sensors into a physical model that is built based on physical properties of the devices.

Abstract: A plant management method includes: acquiring correlation information indicating a correlation between a component subjected to a cyberattack and a component to be possibly affected by the cyberattack when a plant including a plurality of components is subjected to the cyberattack; and zoning the plurality of components on the basis of the correlation information.

Abstract: A plant management system includes: a control device; and a management device. The control device includes: a manipulation parameter setting unit that sets values of manipulation parameters; a state parameter acquisition unit that acquires values of state parameters indicating an operating condition of the plant; and a transmitter that transmits these values to the management device. The management device includes: an acquisition unit that acquires these values; a database that stores set values of manipulation parameters and actually measured values or predicted values of state parameters when the plant is operated based on the set values, corresponding to each other; and a determination unit that determines a set value of a manipulation parameter capable of improving a value of a predetermined state parameter of the plant by referring to these values and the database.

Abstract: Provided is a method of constructing a natural gas liquefaction plant, which can shorten a construction time period by minimizing effect of a lead time for the refrigerant compressor thereon, the method including: transporting a refrigerant compression module body 175 to an installation area 85, wherein the refrigerant compression module body is provided with a frame 120 configured to allow refrigerant compressor 150 for compressing a refrigerant for cooling natural gas to be mounted therein; installing the refrigerant compression module body 175 to the installation area 85; and mounting the refrigerant compressor 150 into a mounting space 130 predefined in the frame 120 of the installed refrigerant compression module body.

Abstract: The present disclosure provides a cathode electrode that can stably sustain a catalytic reaction producing an olefinic hydrocarbon such as ethylene and an alcohol such as ethanol by a reduction reaction of carbon dioxide over a long term. A cathode electrode that electrically reduces carbon dioxide, including cuprous oxide, copper, and at least one additional metal element selected from the group consisting of silver, gold, zinc, and cadmium.

Abstract: Acetic acid is manufactured by a method of carbonylating raw material with carbon monoxide, the method comprising: a reaction step of forming a reaction mixture containing acetic acid inside a reactor; and a purification step of purifying the reaction mixture to thereby obtain product acetic acid. The purification step includes: a flash evaporation step of separating the reaction mixture into a vapor-phase mixture and a liquid-phase mixture; a first distillation step of distilling the vapor-phase mixture to thereby separate and remove low-boiling point components and obtain crude acetic acid; and a second distillation step of introducing the crude acetic acid into a heavy ends column and distilling the crude acetic acid to thereby purify the crude acetic acid and obtain product acetic acid. In the second distillation step, the low-boiling point components remaining in the crude acetic acid are drawn out from a column top of the heavy ends column.

Abstract: There are provided a downcomer pipe that can achieve suppression of accumulation of deposits in use and simplification of operation when being installed into a partition wall, an installation member and a desulfurization apparatus. The downcomer pipe comprises a pipe-shaped member and an installation member for installing the pipe-shaped member into the partition wall. The installation member includes a pipe-shaped part whose inner wall is to be brought into contact with the outer wall of the pipe-shaped member and a protruding part arranged on the outer wall of the pipe-shaped part, the pipe-shaped part and the protruding part constituting an integrated member.

Abstract: A plant operating condition setting support system for supporting the setting of a plant operating condition includes: a learning device that learns a regression model for calculating, from values of a plurality of state parameters indicating an operating condition of a plant and values of a plurality of manipulation parameters set to control an operation of the plant, a predicted value of an output indicating a result of operating the plant when the values of the plurality of manipulation parameters are set in the operating condition indicated by the values of the plurality of state parameters; and an operating condition setting support device that calculates the values of the plurality of manipulation parameters that should be set to control the operation of the plant, by using the regression model learned by the learning device.

Abstract: An inspection support system comprising: determination devices that determine pass or fail based on a result of non-destructive inspection of the object; and a learning device that learns a determination algorithm used to determine pass or fail based on information collected from the determination devices. The determination device transmits an ultimate determination result yielded by an inspection person who has checked a determination result to the learning device along with the corresponding result of non-destructive inspection of the object. The learning device includes: a determination result reception unit that receives the ultimate determination result and the result of non-destructive inspection of the inspection object; a learning unit that learns the determination algorithm based on received information; and a provision unit that provides the learned determination algorithm to the determination devices.

Abstract: A synthesis gas production system for producing CO and H2 by electrolyzing an aqueous solution containing CO2 includes: an electrolysis device including an anode chamber and a cathode chamber separated by a separator membrane; a cathode-side circulation line connected to the cathode chamber to circulate a cathode solution containing CO2; a catalyst supply device provided in the cathode-side circulation line to supply a CO production catalyst to the cathode solution; and a gas composition detection device configured to measure a ratio between CO and H2 in a production gas produced in the cathode chamber. At least one of control of a supply amount of the CO production catalyst by the catalyst supply device and control of a voltage applied between the anode and the cathode by the electrolysis device is performed to make a ratio of H2 to CO in the production gas be within a predetermined target range.