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Method for degumming biodiesel

A waste oil and degumming technology, which is applied in the petroleum industry, fat oil/fat refining, liquid carbon-containing fuel, etc., can solve the problems of poor effect, incomplete settlement, and high rate of colloidal oil, so as to shorten the process flow and reduce raw materials Loss, the effect of reducing the settling time

Inactive Publication Date: 2012-10-24
青岛福瑞斯生物能源科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for biodiesel degumming, which can solve the problems of the prior art that have existed for a long time, have high colloidal oily rate, incomplete settlement and poor effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Method steps of the present invention are as follows:

[0020] 1 acid refining

[0021] The waste oil is pumped into the shell and tube heat exchanger by the oil delivery pump, preheated to 65-70°C, and then enters the acid mixing tank, adding phosphoric acid with a mass of 0.2% of the waste oil mass to be conditioned under stirring, and then naturally cooled to 40°C the following.

[0022] 2 hydration

[0023] Add NaOH solution with 3% waste oil mass and 8 degrees Baume in the stirring tank (with heating coil), adjust the pH to 7-8, and stir for 25 minutes to fully hydrate the colloid.

[0024] 3 Flocculation and sedimentation

[0025] Heat the hydrated oil to about 70°C, add PAC with 1% to 2% of the mass of waste oil, PAM with 0.5% to 1% of the mass of waste oil, and hot water (80°C to 90°C) with 5% of the mass of waste oil ) after dissolving, add to the mixing tank, fully stir and mix with the waste oil for 10 minutes, then transfer to the settling tank and let i...

Embodiment 2

[0029] Method steps of the present invention are as follows:

[0030] 1 acid refining

[0031] The waste oil is pumped into the shell and tube heat exchanger by the oil transfer pump, preheated to 65-70°C, and then enters the acid mixing tank, adding phosphoric acid with a mass of 0.5% of the waste oil mass for conditioning under stirring, and then naturally cooled to 40°C the following.

[0032] 2 hydration

[0033] Add a NaOH solution with 5% waste oil mass and a concentration of 9 degrees Baume in the stirring tank (with heating coil), adjust the pH to 7-8, and stir for 30 minutes to fully hydrate the colloid.

[0034] 3 Flocculation and sedimentation

[0035] Heat the hydrated oil to about 70°C, add PAC with 1% to 2% of the mass of waste oil, PAM with 0.5% to 1% of the mass of waste oil, and hot water (80°C to 90°C) with 5% of the mass of waste oil ) after dissolving, add to the mixing tank, fully stir and mix with the waste oil for 10 minutes, then transfer to the set...

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PUM

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Abstract

The invention provides a method for degumming waste oil, which can solve the problems of long time, high oil rate of colloid, incomplete settling and poor effect in the prior art. The technical scheme of the invention is that: the method comprises the following steps of: (1) performing acid-refining; (2) hydrating; (3) flocculating and settling; and (4) separating and dehydrating, wherein the flocculating, settling and degumming step comprises the following procedures of: heating hydrated oil to be between 65 DEG C and 75 DEG C; adding PAC (Polyaluminium Chloride) in an amount of 1-2 percent based on the mass of waste oil and PAM (Polyacry Lamide) in an amount of 0.5-1 percent based on the mass of the water oil into hot water in an amount of 4-6 percent based on the waste oil for dissolving; adding the solution into a stirring tank; fully stirring and mixing for 8-12 minutes; transferring to a settling tank for standing and settling for 50-70 minutes; and entering the separating and dehydrating step. A flocculating agent is applied to degumming of the waste oil, so that the flocculating and settling of colloid are accelerated, the setting time can be greatly reduced, the consumption of raw materials is reduced, and the content of phosphorus in degummed oil is lowered to be below 8 ppm.

Description

technical field [0001] The invention belongs to the technical field of biofuels, and in particular relates to a method for degumming biodiesel. Background technique [0002] Overview of waste oil degumming: waste oil is rich in phospholipids, proteins, mucus and glycosyl diglycerides, etc., and forms a sol system with triglycerides, which is a peptized impurity called waste oil. The existence of peptizing impurities not only affects the stability of waste oil, but also affects the process effect of waste oil refining and deep processing. During the reaction process, the catalyst will be poisoned to reduce the catalytic activity; during the decolorization process, the consumption of adsorbent will be increased and the decolorization effect will be reduced. When the biodiesel thus produced is used as engine fuel, there will be a lot of carbon deposits after combustion, insufficient combustion, black smoke, and great wear and tear on the moving parts of the engine. Therefore,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/04C11B3/02C10L1/02
CPCY02E50/13Y02E50/10
Inventor 黄传磊
Owner 青岛福瑞斯生物能源科技开发有限公司
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