Treating and blending

Heavy fuel oil usually contains residuum that is mixed (cut back) to a specified viscosity with gas oils and fractionator bottoms. For some industrial purposes in which flames or flue gases contact the product (eg, ceramics, glass, heat treating, and open hearth furnaces), fuel oils must be blended to low sulfur specifications low sulfur residues are preferable for these fuels. 

The debutanized gasoline is cooled, first by supplying heat to the stripper reboiler or preheating the debutanizer feed. This is followed by a set of air or water coolers. A portion of the debutanizer bottoms is pumped back to the presaturator or to the primary absorber as lean oil. The balance is treated for sulfur and blended into the refinery gasoline pool. 

The Amm perchlorate is coated by dissolving the appropriate wts of RDX TNT in hot ale. After adding the Amm perchlorate, the slurry is stirred until most of the Solv is evapd. The treated material is spread on a tray to dry overnight. Agglomerates formed during the process are crushed by hand rolling and blending the mixt before use... 

TNT Coated RDX. 60g of molten TNT are added to a w slurry of 540g of finely divided RDX (w ppt from acet soln) under mechanical agitation. The temp of the TNT-RDX slurry is maintained at about 90° and stirring is contd for 0.5 hr. After cooling to about 50°, the TNT-coated RDX is recovered by filtrn. The RDX thus treated, and presumed to be 10% coated or a 90/10 RDX/TNT mixt, is further blended by hand after rolling to crush any aggregates formed during the process... 

The Landmark diatomite material is treated and processed to a purity and grade that will collect angstrom-sized particles. According to the vendor, because of the diversity and shapes of the diatoms, different blends may be formulated to filter out almost any kind of material from a liquid including heavy metals, organics, and radionuclides from low-level waste streams of nuclear installations. 

The soil-cement mixing wall (SMW) is an in situ technology for the fixation, stabilization, and solidification of soils contaminated with metals and semivolatile organic compounds. SMW can be used to treat soils contaminated with pesticides, polychlorinated biphenyls (PCBs), phenols, and poly aromatic hydrocarbons (PAHs) to depths of up to 100 ft. The technology uses hollow-stem augers to inject solidification/stabilization agents and blend them with the soil. 

Treated Sample Place 20 to 25 g of the starch sample in a 250-mL beaker, add 200 mL of a 7 3 methanokwater mixture, disperse the sample, and agitate mechanically for 15 min. Recover the starch by vacuum filtration in a 150-mL medium-porosity fritted-glass or Biichner funnel, and wash the wet cake with 200 mL of the methanokwater mixture. Reslurry the wet cake in the solvent, and wash it a second time in the same manner. Dry the filter cake in an air oven at a temperature below 50°, then grind the sample to 20-mesh or finer, and blend thoroughly. Determine the amount of dry substance by drying a 5-g portion in a vacuum oven, not exceeding 100 mm Hg, at 120° for 5 h. 

BURCOVEL C may be used on a wide variety of natural and synthetic fibers and blends Including cotton, nylon, polyester, acrylics, and polyester/cotton blends. It provides excellent softness, lubricity, and drapability. It has good resistance to discoloration from heat, ageing, and ultraviolet light. Unlike many other cationic softeners, it does not reduce the absorbency of fabrics treated with it. BURCOVEL C imparts antistatic and antidusting properties as well as softness. 

A resinous flameproof product which provides flame retardancy to polyester fabrics and blends. The flame retardant properties are durable to many launderings. A mild after-wash following drying of treated fabrics will provide a soft flame retardant finish. 

Pseudocomponent models are very useful for oil fractionation and blending problems. They can also be used to characterize heavy products in some chemical processes such as ethane cracking. Pseudocomponents are treated as inert in most of the reactor models, but they can be converted or produced in yield-shift reactors (see Section 4.5.1). 

Pigmentary changes can be treated with three or four ETCA sessions and Blending Bleaching cream. Total sun protection is essential. 

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