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Butanes and butylenes

The price of butanes and butylenes fluctuates seasonally depending on the demand for gasoline ia the United States. Siace much chemical-product usage is determiaed by price—performance basis, a shift to development of butylene-based technology may occur. Among the butylenes, demand for isobutylene is likely to iacrease (and so its price) as more derivatives such as methyl methacrylate and methacrylic acid are produced from isobutylene iastead of the coaveatioaal acetoae cyanohydria process. [Pg.371]

During World War II, the Japanese cut ofFU.S. access to sources of natural rubber, giving the Americans a strategic imperative to develop and expand the manufacture of synthetic rubber. The C4 streams in refineries were a direct source of butadiene, the primary synthetic rubber feedstock. As a coincidence, the availability of this stream was growing rapidly with the expansion of catalytic cracking to meet wartime gasoline needs. Additional butadiene was manufactured by dehydrogenation of butane and butylene also. [Pg.87]

The isobutylene in the C4 stream generally ends up in one of four places a refinery alkylation plant (covered further below), an MTBE plant, a polymerization process, or in gasoline. The first three are methods of removing isobutylene from the C4 stream the fourth is the default—the isobutylene just follows the other butanes and butylenes to the gasoline blending pool. [Pg.93]

Table 2.14 Comparison of ANN models and simulation results for n-butane and butylene yields. Table 2.14 Comparison of ANN models and simulation results for n-butane and butylene yields.
Iodine is used in many dyes and as a colorant for foods and cosmetics. Its silver salt is used in photographic negative emulsions. Other industrial applications include dehydrogenation of butane and butylenes to 1,3-butadiene as a catalyst in many organic reactions in treatment of naphtha to yield high octane motor fuel and in preparation of many metals in high purity grade, such as titanium, zirconium and hafnium. [Pg.397]

That z actually is an adsorption coefficient has been demonstrated by Balandin et al. (19). A mixture of butane and butylene was dehydrogenated, one of the compounds being labeled with the radioactive C14 isotope. It was found that in the consecutive reaction... [Pg.98]

Fig. 3. Potential curve for the consecutive dehydrogenation of butane and butylene-1 (19) (1) C4H10 gas, (2) C4Hi0 ads., (3) C4H10 active compl., (4) C4H8 ads., (5) C4H8 gas, (6) C4Hs ads., (7) C4H active compl., (8) C4H6 ads., (9) C4H6 gas. Fig. 3. Potential curve for the consecutive dehydrogenation of butane and butylene-1 (19) (1) C4H10 gas, (2) C4Hi0 ads., (3) C4H10 active compl., (4) C4H8 ads., (5) C4H8 gas, (6) C4Hs ads., (7) C4H active compl., (8) C4H6 ads., (9) C4H6 gas.
TABLE 19.3 Boiling Points of the Butanes and Butylenes (the BB Fraction ) of the C4 Refinery Stream ... [Pg.646]

In all cases, it is the composition of the gas in terms of hydrocarbon type that is more important in the context of the application. For example, in petrochemical appUcations, the presence of propylene and butylene above 10% v/v can have an adverse effect on hydrodesulfurization before steam reforming. On the other hand, petrochemical processes, such as in the production of iso-octane from iso-butane and butylene, can require the exclusion of the saturated hydrocarbons. [Pg.74]

It has long been known that normally gaseous olefins can be converted to viscous liquid polymers by means of solid aluminum chloride or by other catalytic systems [9-18]. A well-known and widely used olefin feedstock for such oligomerization is a petroleum refinery butane- and butylene-containing stream, referred to as B-B stream. ... [Pg.179]

Dehydrogenation process. The system contains three dehydrogenation reactors, for propane (3), butane (- ) and butylene (6). [Pg.72]


See other pages where Butanes and butylenes is mentioned: [Pg.85]    [Pg.92]    [Pg.295]    [Pg.423]    [Pg.437]    [Pg.381]    [Pg.390]    [Pg.62]    [Pg.703]    [Pg.333]    [Pg.837]    [Pg.846]    [Pg.774]   
See also in sourсe #XX -- [ Pg.381 ]




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Butylenes

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