| 单词 | acid sludge |
| 释义 | > as lemmasacid sludge f. A dark viscous liquid or semi-solid mass deposited when a petroleum distillate is mixed with strong sulphuric acid during refining. Also called sludge acid n. at Compounds 2, acid sludge. ΘΚΠ society > occupation and work > materials > raw material > mineral material > mineral oil > [noun] > deposited liquid or mass in refining of sludge1885 sludge acid1885 1885 Encycl. Brit. XVIII. 719/1 The acid ‘sludge’, consisting of the oil of vitriol combined with the impurities of the oil and forming a black tarry liquid, settles to the bottom..and is drawn off. 1938 Oliver & Spangler in A. E. Dunstan et al. Sci. Petroleum IV. 2765/1 At refineries on the sea coast acid sludge was frequently discharged into the ocean. 1954 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. XIII. 493 Most refineries hydrolyze the light nonlube sludges, effecting an incomplete separation of acid tars from the weak impure acid. 1965 O. T. Fasullo Sulfuric Acid v. 127 The tendency of sludges to evolve sulfur dioxide.., in addition to the enormous quantity in which sludges are necessarily produced by the petroleum industry, makes these materials worthy subjects for the application of pollution control measures. < as lemmas |
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