Process for refining butylacrylate
A technology of butyl acrylate and acrylate, applied in chemical instruments and methods, preparation of carboxylic acid esters, preparation of organic compounds, etc.
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Embodiment 1
[0084] Embodiments of the invention employing dual reactors were demonstrated using a 7 liter reactor. mentioned in brackets figure 1 The units listed in are only to further illustrate the operation of this embodiment of the invention. However, this example includes figure 1 variants described in, but which are fully foreseen by the invention previously described. All starting material and reaction product amounts are approximate, resulting in a material balance of approximately ±5%
[0085] 589 g / h of acrylic acid and 580 g / h of n-butanol and 136 g / h of butanol and inhibitor stream containing recycle (via 6) and 187 g / h of catalyst-containing recycle stream obtained from the second reactor (200) (via 9) Continuously feed into the first reactor (100). Air was fed into the first reactor at a rate of 9.4 sccm. The first reactor, containing a liquid volume of 3.5 liters, was maintained at a temperature of 129°C and atmospheric pressure for 2 to 3 hours. A water-rich vapor s...
Embodiment 2
[0096] 576 g / h of acrylic acid and 599 g / h of n-butanol and 137 g / h of recycle butanol and inhibitor-containing stream (stream 6) and 156 g / h of catalyst-containing recycle obtained from the second reactor (stream 9) Add together to the first reactor. The first reactor (100) containing 3.5 liters of liquid was maintained at a temperature of 129°C and atmospheric pressure for 2 to 3 hours. A water-rich vapor stream is withdrawn from the first reactor and sent to a first distillation column where it is condensed and decanted. The aqueous phase is sent to another distillation column ( figure 1 not described in ), and the organic phase is returned to the first distillation column. A liquid stream of 1339 g / h (stream 1) was withdrawn from the first reactor and fed to the second reactor.
[0097] The second reactor (200) containing 3.5 liters of liquid was maintained at a temperature of 133°C and a pressure of about 350 mmHg absolute for 2 to 3 hours. In addition to feeding the ...
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