SU577201A1 - Method of separating monoatomic aliphatic alcohols - Google Patents

Description

Circuit izrebge sh - perene creneiffl extraction of alcohols and reducing energy costs. For this, dibutyl phthalate is used as an extragent of ester. The method is carried out as follows. Extraction is carried out in extraction separating funnels with a capacity of 50 ml, supplied with a stirrer. A constant temperature, the fluctuations of which do not exceed t.l ° C is maintained by a pressure thermostat. A certain amount of the initial mixture and extractant is loaded into a clean thermostated separating funnel. The funnel is closed and its contents are stirred for 30 minutes. At the end of the extraction before. equilibria, i.e.

The arrival of the sample

Sample volume, ml

The weight of the sample, g complete stratification and the establishment of a sharp boundary between them. The duration of this process is 2-3 hours. The extract and raffinate phases are separated into suspended dry flasks. For a five-step extraction weighted, measured, at each of the five stages, the raffinate is again loaded into a depressive funnel with a new batch of extractant. The material balance of a single-stage extraction of a 3.7% aqueous solution of methanol with a multiplicity of dibutyl phthalate equal to five, at 50 ° C, shows IB table. 1-3. Table 1

Initial mixture No. 1 Methanol content Dibu tilftalag Losses

Sample flow

Raffinate

Methanol content

Extract

Methanol content

Distribution coefficient

30.5

148.0 1.3

Table 2,

Volume Try, ml

Sample weight, g

29

148.2

Oh 3114

The material balance of single-stage extraction of a 3.96% aqueous solution

Table E

ethanol with the multiplicity of dibutyl phthalate, equ. Noah five, at 80 ° C, is given in Table. 4-6,

Table 4

Sample flow

Rough,

"not

Contains propanol

Extract

Propanol content

Table 6

Tybyitsa 7

Table 8

Sample weight, g

Volume of npofei, ml

sixteen

101.7

The material balance of single-stage extraction 5, bl7% -Boro of an aqueous solution of propanol with an nbutalphthalate ratio of nt at 80 ° C is given in Table. 20 7-9.

Claims (3)

1. USSR author's certificate number 368216, cl. C O7 C 29/24, 1973. 2. USSR Author's Certificate No. 33124, C 07 C 41/12, 1974. 3. Levina, K.S., et al. Patterns of extraction of monoagomic and diatomic aliphatic alcohols from aqueous solutions The manuscript is deposited in TsNIITEneftekhim, No. 11, 286, 1974.