Abstract: Provided is a sandbag which is unlikely to break down even when using water-absorbing resin particles therein. A sandbag having a water-permeable bag and water-absorbing resin particles stored in the bag, wherein the pure-water absorption factor of the water-absorbing resin particles is at least a factor of 1,000, and the compression-breaking stress of the water-absorbing resin particles when swollen with pure water is at least 0.1N.

Abstract: A double vacuum pump apparatus (Y2) includes positive displacement vacuum pumps (40A, 40B) and lines (52, 60). Each of the vacuum pumps includes a suction port (41) and a discharge port (42), and a pressure detector (80) is provided in the vicinity of the suction port (41) of the double vacuum pump apparatus (Y2). The line (52) connects the discharge port (42) of the vacuum pump (40A) to the suction port (41) of the vacuum pump (40B). The line (60) has an end (E6) and an end (E5) that are connected to the connection line (52), and includes a buffer tube (Z1) and an on-off valve (61) located between the tube (Z1) and the end (E5). A pressure detection signal from the pressure detector (80) is used as an on/off signal for the on-off valve (61).

Abstract: A method for treating drain in hydrogen production includes steps of gasifying in a gasifier (1), reforming in a reformer (2), gas-liquid separation in a gas-liquid separator (4), PSA gas separation in a PSA separator (5) and evaporation in a drain treatment unit (6). In the gasifying, a mixed material containing methanol is heated and gasified. In the reforming, reformed gas containing hydrogen is produced from the mixed material by reforming reaction of methanol. In the gas-liquid separation, a liquid component is separated from the reformed gas and discharged as drain. In the PSA gas separation, hydrogen-rich gas and offgas are extracted from the reformed gas by PSA separation using an adsorption tower. In the gasifying, the offgas is burned, and the mixed material is heated by using the combustion gas as heat source. In the evaporation, drain is evaporated using the combustion gas after heating the mixed material as heat source.

Abstract: The invention provides an off-gas feeding method that supplies the off-gas discharged from a plurality of adsorption towers (A, B, C) to an off-gas consumption unit (1), when performing a pressure swing adsorption process of repeating a cycle including a plurality of steps, to enrich and separate the target gas out of a gas mixture in the adsorption towers (A, B, C) loaded with an adsorbent. The method allows at least one of the plurality of adsorption towers (A, B, C) to discharge the off-gas, in all the steps included in the cycle, so as to continue to supply the off-gas to the off-gas consumption unit (1) without interruption.

Abstract: A liquid egg having a reduced cholesterol content and a flavor and taste which is comparable to conventional liquid egg is disclosed. The liquid egg is produced by contacting liquid egg with a supercritical fluid to extract cholesterol from the liquid egg.