Recovery of component (c4) alkanoic acids
A technology of alkanoic acid and heat recovery, applied in plastic recycling, chemical recycling, recycling technology, etc., can solve the problem of difficulty in separating and distributing the special part of gas
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[0717] r-pyrolysis oil example 1-4
[0718] Table 1 shows the composition of r-pyrolysis oil samples by gas chromatography analysis. r-pyrolysis oil samples were prepared from waste high- and low-density polyethylene, polypropylene, and polystyrene materials. Sample 4 is a laboratory distilled sample where hydrocarbons larger than C21 were removed. The boiling point curves for these materials are shown in Figure 13-16 middle.
[0719] Table 1. Gas chromatographic analysis of r-pyrolysis oil examples
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[0724] r-pyrolysis oil example-5-10
[0725] Six r-pyrolysis oil compositions were prepared by distillation of r-pyrolysis oil samples. They were prepared by processing the material according to the procedure described below.
example 5
[0726] Example 5. The r-pyrolysis oil is at least 90% boiling at 350°C, 50% boiling between 95°C and 200°C, and at least 10% boiling at 60°C.
[0727] A 250 g sample of r-pyrolysis oil from Example 3 was distilled through a 30-tray glass Oldershaw column equipped with a glycol-cooled condenser, a thermowell containing a thermometer, and a magnet-operated reflux regulated by an electronic timer. controller. Batch distillation was performed at atmospheric pressure with a reflux ratio of 1:1. Liquid fractions were collected every 20 mL, and the overhead temperature and mass were recorded to construct Figure 17 Boiling curve shown. The distillation was repeated until approximately 635 g of material was collected.
example 6
[0728] Example 6. r-pyrolysis oil boiling at least 90% at 150°C, 50% boiling between 80°C and 145°C, and at least 10% boiling at 60°C.
[0729] A 150 g sample of r-pyrolysis oil from Example 3 was distilled through a 30-tray glass Oldershaw column equipped with a glycol-cooled condenser, a thermowell containing a thermometer, and a magnet-operated reflux regulated by an electronic timer. controller. Batch distillation was carried out at atmospheric pressure with a reflux ratio of 1:1. Liquid fractions were collected every 20 mL, and the overhead temperature and mass were recorded to construct Figure 18 Boiling curve shown. The distillation was repeated until approximately 200 g of material was collected.
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