27-04-1936 дата публикации
Номер: GB446412A
Автор:
446,412. Materials for making gas and coke. ROBERTS, A., 20, Reydon Avenue, Wanstead, and SMITH, C. W., Bush House, Aldwych, both in London, [Representatives of ROBERTS, A. A.], and HACKFORD, J. E., 150, Southampton Row, London. July 26, 1934, Nos. 21833/34, 28427/34, 11785/35, 16011/35, and 18990/35. [Class 55 (ii)] Boric acid, sodium borate, or calcium borate is added to coal before distillation, with or without a soluble salt of a strong acid with a monovalent base, such as sodium or potassium chloride, or sodium sulphate or phosphate. The boron compound, which has a boiling point not exceeding 400‹ C., is used in quantity not more than 2 per cent by weight of the coal ; and the quantity of boron compound together with soluble salt does not exceed 4 per cent by weight of the coal. In an example, 0À5 per cent of borax with 0À5 per cent sodium chloride is used. The coal and added material may be charged into hot or cold retorts. Specifications 446,616 and 446,617, are referred to.
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