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Method for preparing biological diesel by hogwash oil

A technology of biodiesel and process method, which is applied in the field of biodiesel preparation, can solve the problems of increased energy consumption, biodiesel cost and application restrictions, and high raw material cost, so as to reduce energy consumption, save chemical dosage, improve reaction temperature and reaction speed effect

Inactive Publication Date: 2007-10-31
广东茵绿环境科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

These processes are mature, but the cost of raw materials is relatively high, which inevitably limits the cost and application of biodiesel
And add excessive methanol to react, reclaim methanol and increase energy consumption

Method used

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  • Method for preparing biological diesel by hogwash oil
  • Method for preparing biological diesel by hogwash oil
  • Method for preparing biological diesel by hogwash oil

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] A process method for preparing biodiesel from hogwash oil, comprising the following steps: ① pretreating the crude hogwash oil containing water to obtain refined hogwash oil; ② performing esterification and transesterification on the refined hogwash oil to obtain crude ester; Wash the esters with water to obtain neutral crude esters; ④ Distill the neutral crude esters to obtain refined fatty acid methyl esters, namely biodiesel. Each step will be described in detail below in conjunction with the accompanying drawings.

[0025] As shown in Figure 1, the pretreatment method in step ① is: a. Separating and removing impurities from the water-containing crude hog oil to remove water and residues; b. Adding water to wash, and then separating and removing waste water; c. Step b can be repeated Multiple times; d. Carry out vacuum dehydration again to obtain refined hogwash ...

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Abstract

The invention discloses a processing method with water oil to prepare biological diesel, which comprises the following steps: 1 pretreating rough water oil with water; getting refined water oil; 2 esterifying the refined water oil; proceeding ester exchange; getting rough eater; 3 washing the rough eater; getting neutral rough ester; 4 distilling the neutral rough ester; getting the product. The each technical index of this biological diesel can reach request, which possesses very high practical value.

Description

technical field [0001] The invention belongs to the technical field of biodiesel preparation, and in particular relates to a process for preparing biodiesel from hogwash oil. Background technique [0002] Biodiesel is a new type of green and environmentally friendly energy that meets environmental protection requirements and is renewable. In developed countries, biodiesel has developed rapidly; in my country, the momentum of biodiesel development is also very fierce. At present, the production of biodiesel is still dominated by chemical methods, using animal and vegetable oils as raw materials, adding excess methanol or ethanol in the presence of catalyst acid or alkali for transesterification to generate fatty acid methyl ester (biodiesel). Excess methanol is recovered and recycled. These processes all take animal and vegetable oils as raw materials, or extract the leftovers after vegetable oils and then propose the oils and fats to make biodiesel. These processes are ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 陈丰
Owner 广东茵绿环境科技有限公司
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