Acetylene Economic data

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Table 5.5 gives economic data concerning the main acetylene manufacturing processes. 

PRODL CnON OF ACETYLENE AS A BY ODUCT OF THE M. NUFACm RE OF ETHYLENE BY THE KuREHA CRUDE OtL STEAM CRACKING PROCESS. ECONOMIC DATA. . 

Table 6.14 gives the main economic data concerning the production of chloroprene from acetylene and butadiene. 

No comparative economic evaluation of all the known commercial acetaldehyde processes has been described in the literature. Recently, the Wacker process was compared with the acetylene process, using European economic data (29). An economic comparison of the one-stage vs. two-stage Wacker processes, using German wage and material price levels of 1961, is given in Table VIII. 

Table S. 1 gives economic data on the production of acetaldehyde by acetylene hydration and liquid phase oxidation of ethylene according to the Wacker-Hoechst (single-step and two-step) technologies.

Table 11.1 lists economic data concerning methods for the manufacture of vinyl acetate from acetylene and ethylene. 

Operations involving the distillation of hydrocarbons and the hydrogenation of acetylene impurities can be combined in different wavs. The final decision depends on the pyrolysis feedstock, the degree of recovery desired for the different products, and economic data. Figure 117 offers an illustration of a classic system. The effluents, which make up a combined liquid/gas phase, are sent to a demethanizer normally operating at a pressure of abont 3.2.10 Pa, and where the methane is condensed at the top around — 100°C. 

Acetylene production. Economic data (France conditions, mid-1986)... 

PkoDI-CTTO.V OF ACETYLENE AS a BY-WtODUCT OF THE MANT-TACTVTJRE OF ETHYLENE - BY THE K Li REHA CRUDE OIL STEAM CRACKING PROCESS ECONOMIC DATA -... 

The economics of the arc-coal process is sensitive to the electric power consumed to produce a kilogram of acetylene. Early plant economic assessments indicated that the arc power consumption (SER = kwh/kgC2H2) must be below 13.2. The coal feedcoal quench experiments yielded a 9.0 SER with data that indicated a further reduction to below 6.0 with certain process improvements. In the propane quench experiment, ethylene as well as acetylene is produced. The combined process SER was 6.2 with a C2H2/C2H4 production ratio of 3 to 2. Economic analysis was completed uti1i2ing the achieved acetylene yields, and an acetylene price approximately 35% lower than the price of ethylene was projected. 

The economics of this process, compared with the acetylene process, will depend on the ratio of acetylene to ethylene prices per unit weight. This ratio is 2 1 to 3 1, based on recent literature data 11, 29, 38). Although one cannot obtain exact data, prices of 10 cents per lb. for acetylene vs. 5 cents per lb. of ethylene have been quoted. A savings of 28 per metric ton may be obtained using the Wacker process 11, 20). 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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