Waste engine oil propane extraction tower

A technology of extraction tower and oil propane, which is applied in the field of waste oil propane extraction tower to achieve the effects of slowing down fouling, strengthening heat exchange and high extraction efficiency

Inactive Publication Date: 2016-06-22
张海清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] my country's waste engine oil regeneration industry began to develop in the 1960s, but the technology is backward and the quality is poor
In the late 1980s, the waste engine oil regeneration industry began to develop rapidly. Especially since 2000, the scale of waste engine oil regeneration enterprises has greatly increased, but there are still problems such as simple processing methods and serious environmental pollution.

Method used

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  • Waste engine oil propane extraction tower

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 4.6MPaG, 85℃, 36t / h waste engine oil 4 enters the middle of the extraction tower;

[0034] 4.6MPaG, 60℃, 110t / h propane 5 enters the lower part of the extraction tower;

[0035] Propane and waste engine oil are in countercurrent contact with the grid packing 12, the lubricating oil components in the waste engine oil are dissolved by propane, and a small amount of asphalt is also dissolved by propane to form an extract;

[0036] 0.4MPaG, 110°C, 125t / h hot water 1 enters the heat exchange tube bundle 9 at the upper part of the extraction tower, forming a temperature field of 87°C to 62°C in the upper part of the tower, and the hot water after heat exchange 2 The temperature drops to 94°C and flows out from the heat exchange tube bundle;

[0037] The extract liquid passes through the heat exchange tube bundle 9 and the spiral baffle plate 10 to exchange heat with hot water to raise the temperature, and the dissolved pitch is precipitated. Finally, the extract liquid 3 (pr...

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Abstract

The invention relates to a waste engine oil propane extraction tower. In the extraction tower, a stable top-high and bottom-low temperature gradient is formed by heat exchange pipe bundles, which are located at the upper part of the tower, are used for raising water temperature and heating, are vertical to the ground and have the lengths of 3m-12m, in a temperature range of 10 DEG C to 100 DEG C and a pressure range of 4.0MPaG and 5.0MPaG; grid fillers at the lower part of the tower are used for enhancing mass transfer; the heat exchange pipe bundles are electromagnetically vibrated to remove pipe bundle scales; the grid fillers are electromagnetically vibrated to remove filler scales; the heat exchange pipe bundles are matched with a spiral baffle so as to enhance heat transfer and prevent scales; and bitumen is prevented from high-temperature metamorphic hardening or low-temperature condensation by water temperature rising and heat tracing of a bituminous section of a tower kettle.

Description

technical field [0001] The invention relates to a waste engine oil propane extraction tower. The method belongs to the technical field of petrochemical industry and environmental protection. Background technique [0002] Waste engine oil is hazardous waste and contains a large amount of carcinogens. Dumping it will cause serious harm to the natural environment, and combustion will produce a large amount of harmful substances such as dioxins and sulfur-phosphorus organic compounds. Only part of the hydrocarbons (about 10% to 25%) in the waste engine oil deteriorate, and most of the remaining hydrocarbons are still the main viscosity carrier of the lubricating oil. After removing the metamorphic substances and impurities, the lubricating oil base that meets the quality requirements can be regenerated Oil, and the recovery rate can reach about 70%. In 2012, the actual consumption of lubricating oil in my country reached 8.5 million tons. According to the calculation of 20% lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C10M175/00
CPCB01D11/04C10M175/005
Inventor 张海清
Owner 张海清
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