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A vacuum percolation flash tank and online regeneration method for heat transfer oil

A heat-conducting oil and flash tank technology, which is applied in the petroleum industry, hydrocarbon oil treatment, and multi-stage series-connected refining process treatment, etc. Effect

Active Publication Date: 2017-12-05
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A variety of heat transfer oil regeneration methods have been proposed, including oil-soluble-sulfuric acid-clay refining method (Jiang Feng, Lu Ming, Cao Chunan, Lin Haichao. Research on the regeneration method of scrap heat transfer oil[J]. Shenyang Chemical Industry, 1992, (6 ), 1-4.), clay adsorption method (Huang Wanli, Guo Hui, Yang Li. Heat transfer oil regeneration technology [J]. Gonglu, 1997, (1): 47-49.), acid washing-water washing-alkali washing -Water washing-adsorption method (Zhu Yong, Dang Lu, Ye Hao. Experimental research on the regeneration of X6D-320 heat transfer oil[J]. Henan Chemical Industry, 2009, 26(7),37-39.), stirring adsorption-vacuum distillation Method (Huang Chunfang. A heat transfer oil regeneration and heat medium furnace cleaning technology [J]. Oil and Gas Storage and Transportation, 1999, 18(9), 47-50.), etc., among which the stirring adsorption-vacuum distillation method realized the heat conduction The oil is regenerated online and can clean the heat transfer oil furnace tube, but this method needs to evaporate almost all the heat transfer oil, which consumes a lot of energy

Method used

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  • A vacuum percolation flash tank and online regeneration method for heat transfer oil
  • A vacuum percolation flash tank and online regeneration method for heat transfer oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] combined with figure 1 and attached figure 2 A method of on-line regeneration of the heat-conducting oil of the method of the present invention is as follows: the heat-conducting oil to be regenerated from the heat-conducting oil system flows into the decompression percolation flash tank 3 through the first pipeline, and passes through the Feed distributors 8-9 spray evenly. The heat transfer oil is flashed and gas-liquid separated in the gas-liquid separation chamber 8-1 to obtain a gas phase and a liquid phase. The liquid phase falls down into the oxide packing layer 8-3 for diafiltration. The material of the oxide packing layer 8-3 is a mixture of sodium hypochlorite and white clay, the mass ratio of sodium hypochlorite and white clay in the mixture is 1:20, and the mixture of sodium hypochlorite and white clay is Packed into bags with glass fiber cloth, the weight of each bag is 0.1 kg, the heavy components such as colloid and asphaltene in the liquid phase are a...

Embodiment 2

[0021] combined with figure 1 and attached figure 2 A method of on-line regeneration of the heat-conducting oil of the method of the present invention is as follows: the heat-conducting oil to be regenerated from the heat-conducting oil system flows into the decompression percolation flash tank 3 through the first pipeline, and passes through the Feed distributors 8-9 spray evenly. The heat transfer oil is flashed and gas-liquid separated in the gas-liquid separation chamber 8-1 to obtain a gas phase and a liquid phase. The liquid phase falls down into the oxide packing layer 8-3 for diafiltration. The material of the oxide packing layer 8-3 is a mixture of sodium hypochlorite and white clay, the mass ratio of sodium hypochlorite and white clay in the mixture is 1:10, and the mixture of sodium hypochlorite and white clay is Packed into bags with glass fiber cloth, the weight of each bag is 1.0 kg, the heavy components such as colloid and asphaltene in the liquid phase are a...

Embodiment 3

[0024] combined with figure 1 and attached figure 2, a heat transfer oil online regeneration method of the method of the present invention is as follows: the heat transfer oil to be regenerated from the heat transfer oil system flows into the decompression percolation flash tank 3 through the first pipeline, and passes through the gas-liquid separation chamber 8-1. Feed distributors 8-9 spray evenly. The heat transfer oil undergoes flash evaporation and gas-liquid separation in the gas-liquid separation chamber 8-1 to obtain a gas phase and a liquid phase. The liquid phase falls into the oxidation packing layer 8-3 for percolation, the material of the oxidation packing layer 8-3 is a mixture of sodium hypochlorite and clay, the mass ratio of sodium hypochlorite and clay in the mixture is 3:20, the mixture of sodium hypochlorite and clay Packed into bags with glass silk cloth, each bag has a mass of 2.0 kg, heavy components such as colloids and asphaltene in the liquid phase...

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Abstract

A percolation technology is introduced to a reduced pressure flash evaporation tank in order to obtain a reduced pressure percolation flash evaporation tank, the flash evaporation tank is used for online regeneration of heat conduction oil in order to make heavy components in the heat conduction oil be oxidized in the percolation process in order to form polar group-containing components which are convenient to adsorb and remove, and heavy components are removed in a flash evaporation mode. A heat conduction oil regeneration method has the characteristic of low energy consumption.

Description

technical field [0001] The invention belongs to the field of heat-conducting oil regeneration, and in particular relates to a vacuum percolation flash tank and a heat-conducting oil on-line regeneration method. Background technique [0002] Heat transfer oil is the former name of "heat carrier oil" in GB / T 4016-1983 "Petroleum Product Terminology", the English name is Heat transfer oil, a kind of special oil with good thermal stability used for indirect heat transfer Taste. Because of its uniform heating, accurate temperature control, high temperature under low vapor pressure, good heat transfer effect, energy saving, convenient transportation and operation, etc., it has been widely used in various occasions in recent years. more and more. [0003] Heat transfer oil will undergo thermal oxidation, thermal cracking and thermal polymerization during use, so after a certain period of use, its light components and residual carbon content will increase significantly. The incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/14
CPCC10G53/14C10G2300/1007
Inventor 沈剑
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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