Biodiesel esterification method

A biodiesel and esterification technology, which is applied in the fields of biofuel, fatty acid esterification, petroleum industry, etc., can solve the problems of high investment required for the project, large consumption of rectification, large loss of methanol, etc., and achieves high mixing efficiency and methanol. The effect of high content and small distillation loss

Inactive Publication Date: 2017-02-22
SICHUAN LANBANG NEW ENERGY TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the waste liquid contains a large amount of sulfuric acid or phosphoric acid, which belongs to hazardous waste water, the treatment is difficult and the consumption is high. At the same time, the existence of sulfuric acid in the whole process leads to high equipment requirements. The storage tanks need to be made of stainless steel, and the pumps need to use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A biodiesel esterification method includes circulation mixing and gas treatment.

[0033] Described gas treatment comprises the following steps:

[0034] ① Gas alkalization: Spray the gas with potassium hydroxide solution to make the gas pH ≥ 9;

[0035] ②Condensation: the alkalized gas is condensed and enters the storage tank;

[0036] ③Batching: The liquid in the storage tank enters the batching tank to mix with sodium hydroxide and potassium hydroxide to get the circulating lye, and the pH of the circulating lye is ≥ 10;

[0037] ④Circulation: use circulating lye to replace the original lye in step ① and repeat steps ①—③1 time;

[0038] ⑤ Methanol rectification: After one cycle, when the methanol content in the storage tank liquid is ≥ 65wt%, methanol rectification is performed on the storage tank liquid to obtain methanol and wastewater.

[0039] Described circulation mixing comprises the following steps:

[0040] aHydraulic cavitation: Use a pump ...

Embodiment 2

[0045] Embodiment 2: a kind of biodiesel esterification method comprises circulation mixing and gas treatment.

[0046] Described gas treatment comprises the following steps:

[0047] ① Gas alkalization: Spray the gas with a mixture of potassium hydroxide solution and potassium hydroxide solution to make the gas pH ≥ 9;

[0048] ②Condensation: the alkalized gas is condensed and enters the storage tank;

[0049] ③Batching: the liquid in the storage tank enters the batching tank and mixes with sodium hydroxide to get the circulating lye, and the pH of the circulating lye is ≥ 10;

[0050] ④ circulation: adopt circulating lye to replace the original lye in step ① and repeat steps ①—③ 3 times;

[0051] ⑤ Methanol rectification: After 3 cycles, when the methanol content in the storage tank liquid is ≥ 75wt%, methanol rectification is performed on the storage tank liquid to obtain methanol and wastewater.

[0052] Described circulation mixing comprises the following steps:

[00...

Embodiment 3

[0058]Embodiment 3: A biodiesel esterification method includes circulation mixing and gas treatment.

[0059] Described gas treatment comprises the following steps:

[0060] ① Gas alkalization: Spray the gas with sodium hydroxide solution to make the gas pH ≥ 9;

[0061] ②Condensation: the alkalized gas is condensed and enters the storage tank;

[0062] ③Batching: the liquid in the storage tank enters the batching tank and mixes with sodium hydroxide to get the circulating lye, and the pH of the circulating lye is ≥ 10;

[0063] ④ circulation: adopt circulating lye to replace the original lye in step ① and repeat steps ①—③ multiple times;

[0064] ⑤ Methanol rectification: After multiple cycles, when the methanol content in the storage tank liquid is ≥ 75wt%, methanol rectification is performed on the storage tank liquid to obtain methanol and wastewater.

[0065] Described circulation mixing comprises the following steps:

[0066] aHydraulic cavitation: Use a pump with a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of biodiesel, in particular to a biodiesel esterification method. The method comprises the steps of gas treating and cyclic mixing. Gas which is originally acidic in an esterification reaction is treated with alkaline liquor, proceeding of the esterification reaction is effectively promoted through multiple mixing effects, therefore, the esterification reaction time can be effectively shortened, and then the biodiesel preparation cycle can be shortened; in addition, pollution can be reduced, the cost can be reduced, and the methanol recycling rate can be increased.

Description

technical field [0001] The invention relates to the field of biodiesel, in particular to an esterification method of biodiesel. Background technique [0002] Biodiesel is a clean and renewable energy source. It is a kind of diesel (liquid fuel) processed from biomass resources as the raw material. The main chemical component is fatty acid methyl ester. Specifically, animal and vegetable oils, such as rapeseed oil, soybean oil, peanut oil, corn oil, rice bran oil, cottonseed oil; and acidified oils and fatty acids from animal and vegetable oil leftovers; animal oils: lard oil, chicken oil, duck oil, animal bone oil After a series of chemical transformations, the refined liquid fuel is a high-quality substitute for petroleum diesel. Biodiesel is a typical "green energy". Vigorously developing biodiesel is of great strategic significance to sustainable economic development, promotion of energy substitution, reduction of environmental pressure, and control of urban air pollutio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C11C3/04C10L1/02
CPCC10L1/02C11C3/04Y02E50/10
Inventor 陈波
Owner SICHUAN LANBANG NEW ENERGY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap