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A preparation method and production device for producing fuel oil from bio-heavy oil

A bio-heavy oil and fuel oil technology, which is applied to fuels, chemical instruments and methods, and hydrocarbon oil treatment, can solve the problems of secondary heating and ignition difficulties, low calorific value of bio-heavy oil, high pour point, and flash point, and achieve The production process is green and environmentally friendly, with low cost and low flash point

Active Publication Date: 2021-06-29
SHANDONG HENGDAO OIL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of the prior art that bio-heavy oil directly used as fuel has low calorific value, high viscosity, high pour point and flash point, and requires secondary heating and difficult ignition

Method used

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  • A preparation method and production device for producing fuel oil from bio-heavy oil

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Effect test

Embodiment 1

[0031] A method for producing fuel oil from bio-heavy oil, characterized in that the method comprises the following steps:

[0032] 1) Dehydration and desalination: After the biological heavy oil is fully mixed with 8wt% sodium carbonate solution, it is heated to 120°C in the convection zone of the tube furnace for dehydration and desalination, so that the water content in the biological heavy oil is reduced to below 0.5%.

[0033] 2) Catalyzed esterification: Add bio-heavy oil, absolute ethanol and solid alkali catalyst obtained in step 1) to the esterification reactor in sequence, and react at 50°C by total reflux, and take it every 20 minutes Again, stop the reaction when the pH is greater than 5.

[0034] 3) The product in step 2) is heated by a high-temperature centrifugal oil pump through the radiation zone of the tube furnace at 320-330°C and then enters the fractionation tower. The temperature at the top of the tower is controlled at 115-120°C. The oil is cooled by th...

Embodiment 2

[0045] A method for producing fuel oil from bio-heavy oil, characterized in that the method comprises the following steps:

[0046] 1) Dehydration and desalination: After the biological heavy oil is fully mixed with 9wt% sodium carbonate solution, it is heated to 125°C in the convection zone of the tube furnace for dehydration and desalination, so that the water content in the biological heavy oil is reduced to below 0.5%.

[0047] 2) Catalyzed esterification: Add the bio-heavy oil, absolute ethanol and solid alkali catalyst obtained in step 1) to the esterification reactor in sequence, and react at 70°C by total reflux, and take it every 25 minutes Again, stop the reaction when the pH is greater than 5.

[0048] 3) The product in step 2) is heated by a high-temperature centrifugal oil pump through the radiation zone of the tube furnace at 320-330°C and then enters the fractionation tower. The temperature at the top of the tower is controlled at 115-120°C. The oil is cooled by ...

Embodiment 3

[0059] A method for producing fuel oil from bio-heavy oil, characterized in that the method comprises the following steps:

[0060] 1) Dehydration and desalination: After the biological heavy oil is fully mixed with 12wt% sodium carbonate solution, it is heated to 130°C in the convection zone of the tube furnace for dehydration and desalination, so that the water content in the biological heavy oil is reduced to below 0.5%.

[0061] 2) Catalyzed esterification: Add bio-heavy oil, absolute ethanol and solid alkali catalyst obtained in step 1) to the esterification reactor in sequence, and react at 80°C by total reflux, and take it every 30 minutes Again, stop the reaction when the pH is greater than 5.

[0062] 3) The product in step 2) is heated by a high-temperature centrifugal oil pump through the radiation zone of the tube furnace at 320-330°C and then enters the fractionation tower. The temperature at the top of the tower is controlled at 115-120°C. The oil is cooled by t...

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Abstract

The invention discloses a preparation method and a production device for producing fuel oil from biological heavy oil, belonging to the technical field of fuel oil preparation. According to the preparation method of bio-heavy oil production fuel oil of the present invention, the bio-heavy oil production fuel of the present invention is obtained after the bio-heavy oil is heated and evaporated by a tube furnace and an evaporation tower, dehydrated and desalted, and catalyzed esterified, and then added with a coating agent after homogeneous filtration Oil, using the characteristic of high surface tension of the coating agent, coats the homogenized material into multiple small molecular mass substances with the coating agent. The prepared fuel oil has high calorific value, low sulfur and low phenol, low viscosity, low pour point and flash point, the production process is green and environmentally friendly, and the process flow is simple and stable. The production device for producing fuel oil from bio-heavy oil based on the preparation method has simple process flow, stable operation, and has the characteristics of high preparation efficiency, low cost and high safety.

Description

technical field [0001] The invention relates to a preparation method and a production device for fuel oil, in particular to a preparation method and a production device for producing fuel oil from biological heavy oil, and belongs to the technical field of fuel oil preparation. Background technique [0002] Bio-heavy oil is a by-product produced during the production of biodiesel. When biodiesel is produced by the solid acid-base two-step method, the waste oil and other raw materials that have undergone two-step esterification treatment are put into the high-temperature still for rectification and purification, and the light components of the rectification are It is divided into biodiesel, and the remaining bottom of the still is bioheavy oil, which is a mixture of various high-boiling oxygen-containing organic compounds. [0003] With the continuous increase of waste oil production such as waste oil and the wide application of solid acid-base two-step biodiesel production t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G57/00B01J27/232
CPCB01J27/232C10G57/00C10G2300/80C10L2290/543C10L2290/547
Inventor 耿臣耿佃华孙业辉朱文毛楠楠
Owner SHANDONG HENGDAO OIL CHEM
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