초록 ▼

A supercritical water oxidation reactor is alternately supplied with a feed stream and a flushing stream. The feed stream contains organic and inorganic materials. The organic materials are oxidized under supercritical conditions in the reactor and the inorganic materials precipitate out of solution

A supercritical water oxidation reactor is alternately supplied with a feed stream and a flushing stream. The feed stream contains organic and inorganic materials. The organic materials are oxidized under supercritical conditions in the reactor and the inorganic materials precipitate out of solution under the same conditions. The flushing stream is a solution in which the inorganic material is soluble. More than one supercritical water oxidation reactor may be connected so that the feed stream is alternately supplied to each reactor. During the period when the feed stream is being supplied to a reactor the effluent from the reactor is cooled to a temperature at which inorganic precipitates are soluble and is then supplied as a flushing stream to one or more of the remaining connected supercritical water oxidation reactors.

대표청구항 ▼

[ We claim:] [1.] In a continuous supercritical water oxidation process using first and second reactors, a method of removing inorganic scale material from a reactor surface at predetermined intervals of one reactor while the supercritical water oxidation process is taking place in the other reactor

[ We claim:] [1.] In a continuous supercritical water oxidation process using first and second reactors, a method of removing inorganic scale material from a reactor surface at predetermined intervals of one reactor while the supercritical water oxidation process is taking place in the other reactor comprising the steps of:a) supplying a feed stream containing oxidizable material to said first and said second supercritical water oxidation reactors;b) oxidizing said feed stream under supercritical conditions at said first and said second reactors;c) terminating said supplying and said oxidizing of said feed stream at said second reactor after a predetermined time interval while maintaining said supplying and said oxidizing of said feed stream at said first reactor;d) selecting subcritical conditions for a flushing stream to solubilize said inorganic scale material;e) supplying said flushing stream into said second reactor through an inlet of said second reactor, said flushing stream being maintained at said subcritical conditions;f) solubilizing said inorganic scale material within said second reactor into said flushing stream; andg) repeating steps a) through f) to flush said first reactor while said supercritical water oxidation process takes place in said second reactor.