TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic salt comprises potassium phosphate, potassium phosphate, sodium chloride and/or potassium chloride.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The mixing device comprises a container structured and arranged for accommodating the liquid carbon dioxide, and a dissociation agent supply connected with the container. The container comprises a stirring device (13) arranged in the container for mixing the liquid carbon dioxide and the dissociation agent. The mixing device comprises an injection device connected with the supply device.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The decomposition step comprises the step of facilitating the disruption of hydrogen bonds of the hydrocarbon hydrate by the dissociation agent so that liquid water is formed, where at least one portion of the dissociation agent is dissolved in the liquid water. The dissociation agent does not form a hydrate. At least one portion of the dissociation agent is included in the liquid water after the decomposing step. A liquid phase boundary is formed between the hydrocarbon hydrate and the carbon dioxide hydrate, where the liquid phase boundary is shifted with continued supplying of liquid carbon dioxide so that the hydrocarbon hydrate is gradually replaced by the carbon dioxide hydrate. At least one portion of the dissociation agent is included in the liquid phase boundary. The supplying step comprises providing a mixture of the liquid carbon dioxide and the dissociation agent, and supplying the mixture to the hydrocarbon hydrate. The supplying step comprises providing a flow of the liquid carbon dioxide, mixing the dissociation agent into the liquid carbon dioxide flow, and supplying the liquid carbon dioxide flow including the dissociation agent to the hydrocarbon hydrate. The dissociation agent is mixed into the liquid carbon dioxide flow by a continuous or discontinuous injection. The dissociation agent is mixed into the liquid carbon dioxide flow by a stationary mixer in the liquid carbon dioxide flow. The method-1 further comprises: the step of collecting the hydrocarbon; and the step of subjecting the hydrocarbon hydrate to a mechanical vibration. Preferred Components: The hydrocarbon comprises methane, ethane and/or ethylene. The concentration of the dissociation agent in the liquid carbon dioxide is below 500 (preferably below 200) ppm. The dissociation agent comprises an inorganic salt, a surface active agent, a hydrate inhibitor and/or an absorption solution. The surface active agent comprises an ionic surfactant, a non-ionic surfactant and/or a biosurfactant. The ionic surfactant comprises (i) a negatively charged group or anion of at least one of a sulfonate, carboxylate or phosphate group or (ii) an anion and/or at least one positively charged group or cation of at least one of potassium, ammonium or potassium cation, and/or (iii) an acid group. The non-ionic surfactant comprises an alcohol ethoxylate, a glycoside, a glucamide and/or an ester. The biosurfactant comprises a trehalose and/or a lipid. The hydrate inhibitor comprises an amine, oxygen double bounded to a ring structure or a carbon pattern in a chain backbone and/or an alcohol group. The hydrate inhibitor comprises an agent having chain length distribution facilitating carbon dioxide diffusion through the hydrate inhibitor. Preferred Composition: The absorption solution comprises an amine and/or a substance including alcohol groups. The absorption solution comprises a limited size molecular structure of monodiethanol amine or dipropanolamine. EXAMPLE - None given.