Method for dehydrating water-containing substance using liquefied matter
AssigneeCentral Research Institute of Electric Power Industry
InventorsHideki Kanda, Youichi Urakawa
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Abstract
A dehydration method of a water-containing substance using a liquefied matter, including a step (1) of contacting a liquefied matter of a substance which is in a gas phase under a condition at ambient temperature and atmospheric pressure with the water-containing substance, to dissolve contained water in the water-containing substance into the liquefied matter, for obtaining the liquefied matter containing a large amount of water; and a step (2) of vaporizing the substance out of the liquefied matter containing a large amount of water, to thereby separate the substance as the gas from water.
Claims16
A method for dehydrating a water-containing substance, comprising
- (1) contacting by countercurrent flow a liquefied matter with the water-containing substance to dissolve water present in the water-containing substance into the liquefied matter and thereby obtaining a solution comprising water;
- and
- (2) vaporizing said liquefied matter out of said solution comprising water to separate the liquefied matter in the gas state from the water, wherein
- said water-containing substance is at least one member selected from the group consisting of a soiled paper diaper, a sanitary product, a weed, a bouquet, a jelly fish, wood, a leftover meal, raw garbage, sewage sludge and soil,
- at least 53% of water is separated from said water-containing substance,
- said liquefied matter comprises at least one compound that is in the gas phase at ambient temperature and atmospheric pressure, and
- a flow rate of said liquefied matter is at least 10 L/h.
A method for dehydrating a water-containing substance, comprising
- (1) contacting by countercurrent flow a liquefied matter with the water-containing substance to dissolve water present in the water-containing substance into the liquefied matter and thereby obtaining a solution comprising water;
- and
- (2) vaporizing said liquefied matter out of said solution comprising water to separate the liquefied matter in the gas state from the water, wherein
- said liquefied matter comprises at least one compound that is in the gas phase at ambient temperature and atmospheric pressure, and
- a flow rate of said liquefied matter is at least 10 L/h, wherein a dehydrated soiled paper diaper, a dehydrated sanitary product, a dehydrated jelly fish, dehydrated wood, a dehydrated leftover meal, dehydrated raw garbage, dehydrated sewage sludge or dehydrated soil is obtained by said method.
A method for dehydrating a water-containing substance, comprising
- (1) contacting by countercurrent flow a liquefied matter with the water-containing substance to dissolve water present in the water-containing substance into the liquefied matter and thereby obtaining a solution comprising water;
- and
- (2) vaporizing said liquefied matter out of said solution comprising water to separate the liquefied matter in the gas state from the water, wherein
- said liquefied matter comprises at least one compound that is in the gas phase at ambient temperature and atmospheric pressure,
- a flow rate of said liquefied matter is at least 10 L/h,
- an amount of the liquefied matter present in said contacting is at least a theoretical amount required for dissolving the water present in the water-containing substance into the liquefied matter, and
- said theoretical amount is 14.9 grams when said liquefied matter is dimethyl ether.
Dependencies are inferred from the claim text.