| 单词 |
hydroforming |
| 释义 |
hydroforming, vbl. n.|ˈhaɪdrəʊfɔːmɪŋ|
[f. hydro- + -forming, after reforming vbl. n.]
In the petroleum industry, a catalytic reforming process that converts the paraffins and alicyclic compounds in low-octane petroleum naphtha to aromatic compounds by dehydrogenation at a high temperature and moderate pressure in the presence of gaseous hydrogen. Freq. attrib.
1931[see hydrofining vbl. n.]. 1941Oil & Gas Jrnl. 27 Mar. 87/1 The first commercial hydroforming plant was placed in operation recently. 1953A. A. Draeger et al. in Sci. Petroleum V. ii. 266/2 The hydroforming process is employed by the petroleum refining industry both to elevate the anti-knock quality of petroleum naphthas..for inclusion in premium quality gasolines and to produce aromatic compounds of high purity for specialized uses. 1959Times Rev. Industry Aug. 112/2 Examples of..new knowledge include the technique of making high octane gasoline by hydroforming and fluid catalytic cracking. 1969Kirk & Othmer Encycl. Chem. Technol. (ed. 2) XX. 534 Toluene is produced principally from petroleum by the hydroforming of selected petroleum naphthas..which are rich in naphthenic hydrocarbons.
Hence (as a back-formation) ˈhydroform v. trans., to subject to hydroforming; ˈhydroformed ppl. a., produced by hydroforming.
1941Nat. Petroleum News 2 Apr. R-102/1 The anti⁓knock quality of hydroformed gasoline has not yet been thoroughly evaluated. 1949P. C. Carman Chem. Constitution & Properties Engin. Materials xxvii. 824 A low octane feed boiling 90°–200°C. can be hydro-formed at 480°–540°C. and 100–300 p.s.i. to give an aromatised motor fuel with an octane rating of 80. 1953A. A. Draeger et al. in Sci. Petroleum V. ii. 274/1 These factors..make it a desirable procedure to hydroform cracked naphthas in admixture with virgin naphthas. |
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