TREATMENT DEVICE THAT USES SUBCRITICAL WATER, TREATMENT METHOD THAT USES SUBCRITICAL WATER, AND FEED FOR LIVESTOCK AND AQUACULTURE, OR INDUSTRIAL RAW MATERIAL EACH OBTAINED BY METHOD

摘要

PROBLEM TO BE SOLVED: To reduce the risk of blocking a pipeline used in a treatment method that uses subcritical water caused by the agglomeration and the sedimentation in the pipeline of a substance made to have a low molecular weight resulting from the decomposition in a reactor of an organic substance present in a treated liquid, which agglomeration is caused by the temperature drop in the treated liquid and in the substance made to have a low molecular weight.

SOLUTION: A raw material to be treated is charged into a reactor 4 wherein water is present in a subcritical state, to decompose an organic substance contained in the raw material into a substance of a low molecular weight. The treated liquid comprising water and the substance resulting from the decomposition of the organic substance having been subjected to the treatment with subcritical water are directly charged from the reactor 4, with the water kept in a subcritical state, into a flash tank 6 of a normal temperature/normal pressure via a back pressure valve 5 to instantaneously reduce the pressure of the treated liquid, whereby the water component in the treated liquid is evaporated to increase the concentration of the low molecular weight substance relative to the water component in the treated liquid and the decomposed substance is disintegrated.

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