Abstract: Combined cycle natural gas processing system that does not discharge carbon dioxide to the atmosphere. The system is provided with an acid gas removal unit that separates carbon dioxide contained in natural gas, and includes a natural gas processing plant that produces liquefied natural gas, and a carbon dioxide cycle. High energy held by a high-temperature and high-pressure carbon dioxide fluid of the carbon dioxide cycle is converted into electrical energy or mechanical energy and supplied to a power consumption device and an energy consumption device provided in the natural gas processing plant. The carbon dioxide fluid extracted from the carbon dioxide cycle and a carbon dioxide separation stream separated by the acid gas removal unit are supplied to a carbon dioxide reception facility capable of receiving carbon dioxide, so that the carbon dioxide generated with production of the liquefied natural gas is not released to the atmosphere.

Abstract: Provided is an operation analysis method for a production plant (1), including: acquiring, with use of a Doppler LIDAR (5), a distribution of three-dimensional wind condition data at positions of an upper space of the production plant (1) and a surrounding space thereof including an arrangement region for an air-cooled heat exchanger (2); acquiring environment data indicating a state of a natural environment that affects operation of the air-cooled heat exchanger (2); and learning, through a numerical analysis with use of a computer, based on a distribution of the three-dimensional wind condition data and on the environment data, a correspondence between a distribution pattern of the three-dimensional wind condition data and the environment data.

Abstract: A natural gas pretreatment system includes: a carbon dioxide removal unit configured to remove carbon dioxide from the natural gas by bringing an absorption liquid and the natural gas into contact with each other; and a water removal unit configured to remove water by causing the natural gas to flow through a packed bed containing a water adsorbent. The packed bed contains a carbon dioxide adsorbent for adsorbing and removing the carbon dioxide that has not been completely removed in the carbon dioxide removal unit, and a concentration of the carbon dioxide contained in the natural gas is measured by an outlet-side carbon dioxide measurement unit on an outlet side of the water removal unit.

Abstract: A liquefied gas production facility includes a plurality of liquefied gas producers which produce liquefied gas by removing an unnecessary substance and liquefying feed gas containing methane as a main component.

Abstract: A weather predicting method includes: selecting, from weather information related to areas and times and including temperature data, weather information sets related to multiple times over a fixed period concerning a first area containing a location where the air utilizing apparatus is placed; by solving, with selected weather information sets as input data, differential equations expressing the weather information based on analysis models for conducting weather simulations, generating a first narrow area weather information sets related to smaller second areas disposed within the first area; selecting a second narrow-area weather information set concerning a second area containing the location of the air utilizing apparatus from among generated first narrow-area weather information sets; and generating a temperature cumulative frequency distribution or a temperature exceedance probability distribution during the fixed period by using temperature data contained in the second narrow-area weather information se

Abstract: A liquefied gas producing facility is provided and includes: a first heat exchanger, a first refrigerant compressor, a second heat exchanger, a second refrigerant compressor, air-cooling heat exchangers for a first refrigerant, air-cooling condensers for a first refrigerant, air-cooling heat exchangers for a second refrigerant, air-cooling condensers for a second refrigerant and a mist spraying device. The liquefied gas producing facility can produce liquefied gas by liquefying feed gas which contains methane as a main component.

Abstract: A liquefied gas production facility includes a plurality of liquefied gas producers which produce liquefied gas by removing an unnecessary substance and liquefying feed gas containing methane as a main component.

Abstract: A weather predicting method is provided and includes: selecting, from weather information including temperature data and related to times and areas, a weather information related to an area containing a location where an air utilizing apparatus is placed and related to multiple times over a certain period; by solving, with weather information as input data, differential equations expressing weather information based on weather analysis models used for conducting weather simulations, generating first narrow-area weather information related to areas smaller than the area corresponding to the weather information; selecting a second narrow-area weather information concerning an area containing the location of the air utilizing apparatus from among the first narrow-area weather information; and generating a temperature cumulative distribution or a temperature exceedance probability distribution over a certain period by using temperature data contained in the second narrow-area weather information for calculating a

Abstract: A weather predicting method includes: selecting, from weather information related to areas and times and including temperature data, a weather information sets related to multiple times over a fixed period concerning a first area containing a location where the air utilizing apparatus is placed; by solving, with selected weather information sets as input data, differential equations expressing the weather information based on analysis models for conducting weather simulations, generating a first narrow-area weather information sets related to smaller second areas disposed within the first area; selecting a second narrow-area weather information set concerning a second area containing the location of the air utilizing apparatus from among generated first narrow-area weather information sets; and generating a temperature cumulative frequency distribution or a temperature exceedance probability distribution during the fixed period by using temperature data contained in the second narrow-area weather information

Abstract: A heat exchanging unit is provided that includes a closed vessel separated into first and second compartments by a vertical partition plate thereby leaving a passage above the vertical partition plate. The first compartment has a cooling medium inlet pipe connected thereto, and a through pipe, through which a fluid to be cooled is passed. The through pipe is arranged to pass through the first compartment and includes a heat exchange member placed at a location lower than the top of the vertical partition plate. The second compartment is provided with a demister, and a cooling medium gas outlet pipe connected to the demister. A cooling medium liquid outlet pipe is connected to the second compartment. The heat exchanging unit is preferably used as part of a combined heat exchanging apparatus formed by combining the heat exchanging unit with a mist processing unit, or as part of a multistage heat exchanging apparatus formed by integrating two or more of the heat exchanging units.