Compressed Ethylene

An application of Eq. (19) is shown in Fig. 4, which gives the solubility of solid naphthalene in compressed ethylene at three temperatures slightly above the critical temperature of ethylene. The curves were calculated from the equilibrium relation given in Eq. (12). Also shown are the experimental solubility data of Diepen and Scheffer (D4, D5) and calculated results based on the ideal-gas assumption (ordinate scale is logarithmic and it is evident that very large errors are incurred when corrections for gas-phase nonideality are neglected. 

Estimate the work required to compress ethylene to 25 MPa in a two-stage compressor. A reciprocating compressor will be used. The gas is at an initial temperature of 15°C and is cooled to 25°C after the first-stage compression. 

Estimate the work required to compress ethylene from 32 MPa to 250 MPa in a two-stage reciprocating compressor where the gas is initially at 30 °C and leaves the intercooler at 30 °C. See Example 3.13. 

A 5A molecular sieve, not previously soaked in dilute ethylene, was used to dry compressed ethylene gas in a flow system. An exothermic reaction attained red heat and caused explosive failure of the dryer. The smaller-pored 3A sieve is not catalytically active towards ethylene. 

The compressed ethylene and a peroxide initiator (catalyst) enter the autoclave reactor. An autoclave is any vessel that can be closed up and maintain pressure at elevated temperatures. In chemical applications, the ongoing reaction inside the autoclave generates heat and/or pressure. (When a doctor or dentist sterilizes his instruments in his office,. he uses an autoclave that generates superheated steam.)... 

ZHA Zhang, R., Liu, J., Han, B., Wang, B., Sun, D., and He, J., Effect of PEO-PPO-PEO stmcture on the compressed ethylene-induced reverse micelle formation and water... 

Synonyms Acetene Bicarburretted hydrogen Ethene Ethylene, compressed Ethylene, refrigerated liq. 

Low-density polyethylene (LDPE) is the oldest commercially available polyethylene resin that was first discovered by ICI in 1933 during screening experiments on various chemicals that apply high-pressure conditions. By compressing ethylene to 1400 bars in the presence of benzaldehyde and traces of oxygen, a white solid was formed that proved to be LDPE. In 1936, ICI obtained a patent (Gibson et al., GB 471590) for the chemical polymerization process whose nature is of a free radical type. 

Synonyms Acetone Bicarburrelled hydrogen Elhene Ethylene, compressed Ethylene, refrigerated liq. Liquid ethylene Olefiant gas Empirical CjHj Formula H2C CH2... 

Assuming 15% conversion per pass, calculate the energy needed to compress ethylene to 2000 atm and 100°C for the production of 1 lb of polymer. At 0.03/kWh, is this a significant production cost ... 

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