Japan, Sept. 16 -- SHIMIZU CORP has got intellectual property rights for 'PURIFICATION SYSTEM OF MERCURY CONTAMINATED SOIL, AND PURIFICATION METHOD OF MERCURY CONTAMINATED SOIL.' Other related details are as follows:
Application Number: JP,2021-008791
Category (FI): B01D53/79,B09B3/00,304@K,B01D53/64,100,B09B101:90,B09B3/10,B09C1/06,B01D53/78
Stage: PROBLEM TO BE SOLVED: To provide a purification system of mercury contaminated soil and a purification method of mercury contaminated soil in which mercury is efficiently recovered from mercury-containing gas generated by a thermal desorption method targeting mercury contaminated soil, and a processing amount of contaminated soil can be reduced.SOLUTION: A purification system of mercury contaminated soil 1 has: a heater 10 which heats mercury contaminated soil to obtain mercury-containing gas that contains mercury; a wet absorption device 20 which brings the mercury-containing gas in contact with sulfuric acid acidic potassium permanganate solution, and allows the sulfuric acid acidic potassium permanganate solution to absorb mercury included in the mercury-containing gas to obtain mercury-absorbing solution and exhaust gas; a mercury reductor 30 which adds reductant to the mercury-absorbing solution to evaporate mercury; a removing device 40 which brings the evaporated mercury in contact with adsorbent for mercury to remove mercury; and an exhaust gas treatment device 50 which brings the exhaust gas in contact with the adsorbent to remove a contaminant other than mercury included in the exhaust gas.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: Jan. 22, 2021
Publication Date: Aug. 3, 2022
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
