Compound biodiesel pour point depressant, preparation method and application

A biodiesel and pour point depressant technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of poor fluidity of biodiesel pour point depressants, alleviate the shortage of petrochemical energy, change crystallization habits, and improve receptivity effect

CN114015482AActive Publication Date: 2022-02-08SHANGHAI INST OF TECH
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-02-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a biodiesel pour point depressant, in particular to a compound biodiesel pour point depressant, a preparation method and application. The pour point depressant comprises a surfactant and tetradecyl methacrylate-norbornene in equal parts by weight. The preparation method of the pour point depressant comprises the step of mixing the surfactant and the tetradecyl methacrylate-norbornene well according to the weight part ratio of 1: 1. Compared with the prior art, the synthesized polymer pour point depressant contains alkyl long chains, so that the oil solubility of the polymer in biodiesel can be improved, and the polymer pour point depressant and wax crystals can be subjected to eutectic interaction. Norbornene has relatively large steric hindrance, so that the dispersity in the biodiesel can be effectively improved, the crystallization habit is changed, and the low-temperature fluidity of the biodiesel is further reduced. The surfactant has good oil solubility, has good sensitivity to the soybean oil biodiesel, and has a synergistic effect with the polymer pour point depressant to jointly promote the low-temperature flowing property of the biodiesel.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a biodiesel pour point depressant, in particular to a composite biodiesel pour point depressant, a preparation method and an application. Background technique

[0002] Due to the increasing shortage of global energy and the deterioration of the environment, biodiesel has been extensively researched and developed as a renewable energy. Biodiesel is fatty acid methyl ester, which is produced by transesterification of soybean, rapeseed, corn, animal fat and waste oil from the catering industry. Compared with petrochemical diesel, biodiesel has the advantages of higher cetane number, better lubricity, higher flash point, non-toxic, biodegradable, etc. Its high oxygen content is very conducive to compression ignition The normal combustion of the engine reduces the emission of harmful substances in the exhaust gas, such as CO and SO 2 , Emissions of aromatic hydrocarbons. However, biodiesel has poor low-temperature fluidity, which...

Examples

Embodiment 1

[0030] Mix 3 parts of triethanolamine oleic acid soap with 3 parts of myristyl methacrylate-norbornene according to the ratio of 1:1 by weight to obtain a compound biodiesel pour point depressant.

[0031] Such as figure 2 and image 3 shown by figure 2 It can be seen that c is -C=O-O-linked methylene-CH 2 The peak on -, d, e, f are norbornene-CH- peaks, δ H There is no obvious characteristic peak in 5-7, proves that C=C is fully aggregated; By image 3 It can be seen that 2927, 2855cm -1 The C-H characteristic absorption peaks in the norbornene structure appeared, 1728, 1639cm -1 It is the absorption peak of myristyl methacrylate C=O.

[0032] When the composite biodiesel pour point depressant is applied, it is added to soybean oil biodiesel at a mass percentage of 0.1-0.3%, and ultrasonically dispersed at 40° C. for 45 minutes. The test results are as follows:

[0033] The application effect of the composite biodiesel pour point depressant prepared in Table 1 Examp...

Embodiment 2

[0036] Mix 3 parts of glycerol random polyether with 3 parts of myristyl methacrylate-norbornene according to the ratio of 1:1 by weight to obtain a compound biodiesel pour point depressant.

[0037] When the composite biodiesel pour point depressant is applied, it is added to soybean oil biodiesel at a mass percentage of 0.1-0.3%, and ultrasonically dispersed at 40° C. for 45 minutes. The test results are as follows:

[0038] The application effect of the composite biodiesel pour point depressant prepared in Table 2 Example 2

[0039] Amount added CP / ℃ CFPP / ℃ PP / ℃ 0.1％ 8 -2 -8 0.2％ 7 -2 -10 0.3％ 7 -3 -10

Embodiment 3

[0041] Mix 3 parts of fatty alcohol polyoxyethylene ether with 3 parts of myristyl methacrylate-norbornene according to the ratio of 1:1 by weight to obtain a compound biodiesel pour point depressant.

[0042] When the composite biodiesel pour point depressant is applied, it is added to soybean oil biodiesel at a mass percentage of 0.1-0.3%, and ultrasonically dispersed at 40° C. for 45 minutes. The test results are as follows:

[0043] The application effect of the composite biodiesel pour point depressant prepared in table 3 embodiment 3

[0044] Amount added CP / ℃ CFPP / ℃ PP / ℃ 0.1％ 7 -2 -9 0.2％ 6 -4 -10 0.3％ 6 -5 -11