Vegetable oil and ester ether biodiesel and new use thereof

A biodiesel and vegetable oil technology, applied in biofuels, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems of low oxygen content, low cetane number, difficult to meet the low emission requirements of diesel engines, etc., and achieve good emissions. Characteristics and combustion performance, HC emission reduction effect

Inactive Publication Date: 2011-08-17
PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional biodiesel represented by vegetable oil methyl ester and vegetable oil ethyl ester has only one ester group or two oxygen atoms in the molecule, so the oxygen content is low, and the emission performance of diesel engine is not very outstanding, so it is difficult to meet the requirements of the future. For stringent diesel engine low emission requirements
Furthermore, the cetane number (CN) of traditional biodiesel is not high, mostly lower than or close to 50

Method used

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  • Vegetable oil and ester ether biodiesel and new use thereof
  • Vegetable oil and ester ether biodiesel and new use thereof
  • Vegetable oil and ester ether biodiesel and new use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1 cottonseed oil diethylene glycol methyl ether ester

[0016] 1. Preparation

[0017] (1) Cottonseed oil and methanol are subjected to a transesterification reaction to obtain cottonseed oil methyl ester. The reaction conditions are as follows: the molar ratio of alcohol to oil is 6:1, the catalyst consumption is 1.1%, the reaction temperature is 50° C., and the reaction time is 40 minutes. Under this reaction condition, the yield of cottonseed oil methyl ester can reach 97.58%. The cottonseed oil methyl ester product is liquid-separated, distilled under reduced pressure, and put into the reactor.

[0018] (2) Add preheated diethylene glycol methyl ether into the reactor, add 0.6% to 0.8% cottonseed oil quality KOH powder, start the stirrer, and start the reaction.

[0019] (3) In the reaction process, since the methanol generated is continuously steamed out, the last reaction can be carried out to the end, and finally the cottonseed oil methyl ester is a...

Embodiment 2

[0047] Embodiment 2 cottonseed oil triethylene glycol methyl ether ester biodiesel

[0048] 1. Preparation

[0049] Method and step are with embodiment 1

[0050] 2. Chemical structure

[0051] Using FT-IR, 1 The refined product of cottonseed oil ethylene glycol methyl ether ester was characterized by H NMR and GPC, and the data are shown in Table 5, Table 6, and Table 7 below, respectively. According to these data, it can be determined that the structural formula of cottonseed oil ethylene glycol methyl ether ester is: RCOOCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 3 .

[0052] Table 5 cottonseed oil triethylene glycol monomethyl ether ester infrared spectrogram data

[0053]

[0054]

[0055] Table 6 Cottonseed oil triethylene glycol methyl ether ester hydrogen nuclear magnetic resonance spectrum analysis data

[0056]

[0057] The gel permeation chromatography experimental data of table 7 cottonseed oil triethylene glycol monomethyl ether ester

[0058]

...

Embodiment 3

[0076] Embodiment 3 palm oil ethylene glycol butyl ether ester biodiesel

[0077] 1. Preparation

[0078] (1) According to alcohol oil molar ratio is 6: 1 ~ 10: 1, KOH accounts for the mass fraction of palm oil (condensation point is 8 ℃) is 0.5% ~ 1.2%, take a certain amount of refining 8 degree palm oil, Ethylene glycol methyl ether and solid KOH powder. KOH was dissolved in ethylene glycol butyl ether to prepare a potassium alkoxide solution.

[0079] (2) Inject the preheated palm oil and potassium alkoxide solution into the reactor, heat and stir, control the reaction temperature at 60°C to 100°C, and stop the reaction after 30min to 120min.

[0080] (3) After the reaction time is up, stop stirring, transfer the reaction product into a separatory funnel, add dilute hydrochloric acid to neutralize, let stand to separate the liquid, and collect the oil phase and the water phase. The oil phase after liquid separation was distilled under reduced pressure to remove unreacted...

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Abstract

The invention relates to vegetable oil and ester ether biodiesel produced by using vegetable oil and ester ether as raw materials and new use of the vegetable oil and ester ether biodiesel as a common diesel additive. The vegetable oil and ester ether biodiesel has a chemical structural formula shown below, wherein in the formula, R1 is hydrocarbyl of fatty acid in vegetable oil and the number of the carbon atoms, the number of unsaturated double bonds and the chemical structure of the R1 are determined by the fatty acid component in the vegetable oil; the values of x and y are integers ranging from 1 to 10; and z is an integer ranging from 1 to 4. Compared with the conventional vegetable oil, methyl ester and ethyl ester biodiesel, the biodiesel has a better emission property higher combustion performance, can be used alone as a substituting fuel or used as a clean additive for common diesel and a cetane number modifier and can lower the ignition point, ignition delay and combustion surge pressure of the engine; a pressure rise rate curve is shifted forward, a peak value is lowered; a heat release rate curve is shifted forward, a peak value is lowered; the carbon smoke emission is reduced; the CO emission under a rotation speed load property is lowered slightly; HC emission is reduced; and NOx emission is lower compared with diesel.

Description

technical field [0001] The invention belongs to the technical field of clean alternative fuels for diesel engines, and relates to a class of vegetable oil ether ester biodiesel produced from vegetable oil, ethylene glycol alkyl ethers, propylene glycol alkyl ethers and butanediol alkyl ethers as raw materials and used as a diesel oil additive new uses. Background technique [0002] Diesel engines widely use petrochemical diesel as power fuel. Petrochemical diesel is obtained from petroleum refining and processing. The petroleum reserves are extremely limited and are facing a situation of depletion day by day. my country is a country with very poor oil resources. Since the emergence of net oil imports in 1993, the oil imports have grown at a rate of 4% per year. In 2004, my country's oil imports exceeded the 100 million tons mark, reaching 120 million tons. Foreign dependence reached 40%; in 2009, oil imports reached 210 million tons, and foreign dependence exceeded 50%. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C10L1/19C10L10/12C10L10/02
CPCY02E50/13Y02E50/10
Inventor 郭和军王煊军苏俊作王汝栋马静
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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