Method for directly producing paraffin or micro crystal wax
A microcrystalline wax, direct technology, applied in the recovery/refining of mineral wax, petroleum industry, etc., can solve the problem of high oil content in wax paste, achieve the effect of improving the crystal structure and improving the effect of oil and wax separation
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Embodiment 1
[0015] The raw material oil is deasphalted oil after furfural is refined, and the properties of the raw material are shown in Table 1. The dewaxing solvent is a mixed solvent of butanone and toluene (volume ratio 50:50), and a process of one-stage dewaxing and multi-point dilution is adopted, and the total dilution ratio is 4.5:1.
[0016] The specific process is briefly described as follows: first heat the raw material oil to 80°C, and then add 1500ppm dewaxing aid to the hot raw material oil, (a mixture of polyα-olefin and ethylene, propylene copolymer, polyα-olefin monomer carbon The atomic number distribution is: C10α-olefin accounts for 10%, C14α-olefin accounts for 20%, C16α-olefin accounts for 20%, C18α-olefin accounts for 25%, C20~38α-olefin accounts for 25%, and the molecular weight distribution is 3000~2500000; Ethylene , The molecular weight distribution of propylene copolymer is 500~100000, and the weight ratio of the former and the latter is 2: 2), add each diluti...
Embodiment 2
[0031]The vacuum three-line distillate oil refined by furfural is used as raw material, and the properties of the raw material are shown in Table 1. The dewaxing solvent is a mixed solvent of butanone and toluene (volume ratio 65:35), and a process of one-stage dewaxing and multi-point dilution is adopted. The total dilution ratio 3.7: 1, the experimental process is basically the same as in Example 1. The dewaxing aid is a mixture of poly-α-olefin and ethylene and propylene copolymer (the carbon number distribution of poly-α-olefin monomer is: C10-15α-olefin accounts for 45%, C15-20α-olefin accounts for 40%, C20- 30α-olefin accounts for 15%, and the molecular weight distribution is 3,000-2,500,000; the molecular weight distribution of ethylene and propylene copolymer is 600-100,000, and the weight ratio of the former to the latter is 4:1. The test results are shown in Table 4. As can be seen from the data in Table 4, the oil content of the oily wax paste is only 0.6%, which me...
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