Slated sulfur

Slag scrap Slagsitall Slagwool Slated sulfur S Lec... 

A skid-mounted batch plant complete with steam boiler and generator was placed on a flatbed trailer and was positioned adjacent to the site. Composite was prepared from slate sulfur and was sprayed directly onto the basin. Instantaneous spray rates were about 400 lb/min. 

Sulfur forming was invented to allow the transportation of solid sulfur with less risk than broken. The earliest sulfur forming was flake or slate sulfur. Liquid sulfur is poured onto a water-cooled moving belt to produce a sheet or ribbon of sulfur, which falls off the belt and breaks into chips, called slate. In the mid 1950 s, Texas Gulf Sulfur was experimenting with slate sulfur. A plant was installed at their Chacahoula mine. One of the earliest sulfur slate-forming plants was installed by Pemex of Mexico in 1953 the unit contained a water-cooled belt... 

The use of slate sulfur for bulk overseas shipments has partially alleviated the problem of dusting, but it has not been entirely effective in this respect. It has been proposed that pelletizing or prilling of elemental sulfur would provide a more satisfactory product for large-scale movement in international trade. Several relatively small plants for the production of pellets or prills have been built to evaluate these products from the standpoint of shipping characteristics, dusting problems and customer acceptance. 

Synthetic Iron Oxides. Iron oxide pigments have been prepared synthetically since the end of the seventeenth century. The first synthetic red iron oxide was obtained as a by-product of the production of sulfuric acid from iron sulfate containing slate. Later, iron oxide pigments were produced direcdy by the thermal decomposition of iron sulfates. In the 1990s, about 70% of all iron oxide pigments consumed are prepared synthetically. 

The H-Coal process could operate in one of two modes, depending on the desired product slate. In the "syn-cmde" mode, a fluid-bed coking unit was employed to maximize recovery of distillate from the Hquefaction product (Fig. 7a). When operated in the fuel oil mode (Fig. 7b), no coker was used and the primary product was a coal-derived low sulfur fuel oil. Total hydrogen demand on the process was also reduced in the latter mode of operation. 

Table I presents a refinery sulfur recovery capacity forecast made by the National Petroleum Council (NPC). The top portion of the table represents the initial conditions based on current crude input and refinery product slates the bottom indicates additional capacity required for each of three, non-additive, scenarios. As the NPC study shows that sulfur production, as a percent of capacity, in 1982 is expected to be 60% in district I, 54% in district II, 71% in district III, 72% in district IV, and 49% in district V...

New Forms. Even at the time of introduction of slate it was recognized that the best geometric form for friable solid sulfur was a spherical particle enclosing maximum volume in minimum surface area and with least opportunity for fulcrum effects to increase rupture forces. A number of methods for forming liquid... 

Acceptable abbreviated names may be given to potyoxoacids formally derived by condensation (with evolution of water) of units of the same mononuclear oxoacid, provided that the central atom of the mononuclear oxoacid lias the highest oxidation state of the Periodic Croup to which it belongs, that is, VI for sulfur, etc. The names are formed by indicating with numerical prefixes the number of atoms of central dement present. It is not necessary to slate the number oF oxygen atoms. 

The crude oil feedstock heavily influences the product slate for the refinery and the downstream processing required to meet the refinery s product goals. Fuels are blended to meet product specifications of volatility, sulfur content, and octane number. Most important, refiners constantly seek to optimize their blending programs to meet product goals without giving up product. 

Slate, another type of formed sulfur, was the sulfur industry s first attempt at developing a formed product which would generate less dust than the traditional crushed bulk sulfur commonly used until the 1960s. Slate is produced by pouring a thin (usually up to... 

Raffinate HydroConversion (RHC) corresponds to a severe hydroprocessing, which is applied only to selected stocks, as opposed to the treatment of the entire slate. The purpose of the hydroconversion, which is carried on a proprietary sulfided catalyst, is to increase the VI while preserving the yield of lubes and wax. RHC is very effective at removing heteroatoms such as sulfur and nitrogen and at hydrogenating aromatics. 

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