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A diesel pour point depressant, polymethacrylic acid technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc. Pour down effect, lower cold filter point and freezing point, good dispersion effect
Inactive Publication Date: 2015-09-16
马健
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[0003] In my country, traditional diesel pour point depressants are generally products developed based on ethylene-vinyl acetate. These products can only produce anticoagulation effects for one or several types of diesel oil, and cannot be used universally for all diesel oils. They are suitable for those with high wax content and narrow fractions. The sensitivity of diesel oil is relatively poor, and generally it can only lower its freezing point, but it is difficult to lower its cold filter point
Method used
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Embodiment 1
[0021] Take the following raw materials by weight:
[0022]
[0023] The vinyl acetate content in the polyethylene vinyl acetate is 30%, the molecular weight is 3300, and the branching degree is 7.
[0024] The preparation process of diesel oil pour point depressant is as follows:
[0025] Add polyethylene vinyl acetate first, then add polyethylene glycol, alkyl glucoside and sodium polyaspartate in turn, and finally add polylauryl methacrylate and polyhexadecyl methacrylate, and stir well. .
Embodiment 2
[0027] Take the following raw materials by weight:
[0028]
[0029] The vinyl acetate content in the polyethylene vinyl acetate is 35%, the molecular weight is 3100, and the branching degree is 7.
[0030] The preparation process of diesel oil pour point depressant is as follows:
[0031] Add polyethylene vinyl acetate first, then add polyethylene glycol, alkyl glucoside and sodium polyaspartate in sequence, and finally add polylauryl methacrylate, and stir well.
Embodiment 3
[0033] Take the following raw materials by weight:
[0034]
[0035] The vinyl acetate content in the polyethylene vinyl acetate is 40%, the molecular weight is 2900, and the branching degree is 7.
[0036] The preparation process of diesel oil pour point depressant is as follows:
[0037] Add polyethylene vinyl acetate first, then add polyethylene glycol, alkyl glucoside and sodium polyaspartate in sequence, and finally add polyoctearyl methacrylate, and stir well.
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Abstract
The invention relates to the technical field of pour point depressants and particularly relates to the technical field of a diesel oil pour point depressant. The diesel oil pour point depressant is prepared from the following raw materials in parts by weight: 40-60 parts of high polymethacrylate, 20-30 parts of polyethylene vinyl acetate, 30-40 parts of polyethylene glycol, 10-20 parts of alkyl glycoside and 15-25 parts of sodium polyaspartate. According to the diesel oil pour point depressant disclosed by the invention, the pour point depression effect is remarkably improved, the cold filter plugging point and pour point of all diesel oil can be effectively lowered, particularly the sensitivity to high-wax-content and narrow-fraction diesel oil is relatively good, the flowing property of the high-wax-content and narrow-fraction diesel oil is better improved under low-temperature conditions, the diesel oil pour point depressant is environment-friendly and has an excellent market value, and the problems of the existing diesel oil pour point depressants in China petrochemical industry that the pertinence is high, the performance is single and the broad-spectrum performance is poor are solved.
Description
technical field [0001] The invention relates to the technical field of pour point depressants, in particular to a diesel pour point depressant. Background technique [0002] Diesel oil is a complex hydrocarbon mixture containing multiple components. Wax crystals will be precipitated at low temperatures. As the temperature drops, the wax crystals will increase and finally form three-dimensional network crystals. When the crystals grow to a certain extent, they will block the filter. net, thereby rendering the entire diesel engine unusable. Therefore, improving the low-temperature fluidity of diesel oil is one of the main problems to be solved urgently to increase the output of diesel oil. At present, more diesel pour point depressants are used to improve the low temperature fluidity of diesel. Diesel pour point depressant PPD (Pour Point Depressant), also known as diesel low temperature flow improver, is an important fuel additive in diesel production. Adding a small amoun...
Claims
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Application Information
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