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A kind of ship clearance oil dehydrating agent and preparation method thereof

A dehydrating agent and warehouse clearing technology, which is applied in the field of cleared oil, can solve the problems of complex components of cleared oil, difficulty in dehydration, pressure rise, etc., and achieve the effect of clear and transparent water quality, clear oil-water interface, and fast dehydration speed

Inactive Publication Date: 2016-07-06
宁夏捷全油气技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separated oil-water mixture contains more colloids and asphaltenes in the system, which will emulsify a large amount of water in the heavy oil, forming a stable water-in-oil (w / o) emulsion, and in the normal operation of the machine With a large amount of waste engine oil falling into the oil tank, and some unscrupulous traders artificially blending waste chemical raw materials, the composition of the cleared oil is extremely complex, which brings great difficulty to the dehydration in the future
Water in heavy oil will reduce the heat transfer temperature, which not only increases the load on equipment and fuel consumption, but also affects normal operation
If the water content is too large, it will also cause tower flushing and other accidents. For example, in the process of heavy oil refining, when water and heavy oil are heated together, the water will rapidly vaporize and expand, and the pressure will rise, affecting the normal operation of the refinery and product quality. will explode

Method used

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  • A kind of ship clearance oil dehydrating agent and preparation method thereof
  • A kind of ship clearance oil dehydrating agent and preparation method thereof
  • A kind of ship clearance oil dehydrating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add initiator and basic catalyst KOH into the pressure reactor, then purge the reaction system with nitrogen for 3 times, add propylene oxide (PO) dropwise, control the temperature at 120°C, and continue the reaction for 30 minutes after the pressure drops to less than 0.4MPa ; Add ethylene oxide and propylene oxide dropwise in turn. After the reaction is completed, the pH value of the reactant is adjusted to neutral to obtain a three-stage polyether.

[0035] Concrete raw material ratio is as shown in table 1, and the consumption of KOH is 0.2% of total raw material quality, obtains respectively imidazoline polyoxypropylene polyoxyethylene polyoxypropylene ether A1, imidazoline polyoxypropylene polyoxyethylene polyoxypropylene ether A2, Polyethylene polyamine polyoxypropylene polyoxyethylene polyoxypropylene ether B1 and polyethylene polyamine polyoxypropylene polyoxyethylene polyoxypropylene ether B2.

[0036] The preparation raw material ratio of table 1 three-stage...

Embodiment 2

[0039] Heat 20g imidazoline polyoxypropylene polyoxyethylene polyoxypropylene ether A1 and 10g polyethylene polyamine polyoxypropylene polyoxyethylene polyoxypropylene polyoxypropylene ether B1 to 70°C respectively, add 70g methanol and 2g concentration of 0.5% after melting NaCl aqueous solution, mixed evenly to obtain a fast dehydrating agent suitable for ship clearance oil.

[0040] Add the above-mentioned dehydrating agent in an amount of 250ppm to the ship clearing oil in a water bath with a constant temperature of 80°C, and keep the temperature constant for 15 minutes. The experimental results are as follows: figure 1 As shown, the dehydration speed is fast and the water quality is clear.

Embodiment 3

[0042] Heat 40g imidazoline polyoxypropylene polyoxyethylene polyoxypropylene ether A2 and 10g polyethylene polyamine polyoxypropylene polyoxyethylene polyoxypropylene polyoxypropylene ether B2 to 70°C respectively, dissolve and add to 50g ethanol and 1g concentration of 0.1% NaCl aqueous solution, mixed evenly to obtain a fast dehydrating agent suitable for ship clearance oil.

[0043] Add the above dehydrating agent in an amount of 100ppm to the ship clearing oil at a constant temperature of 70°C in a water bath, keep the temperature for 15 minutes, and the effect is as follows: figure 2 As shown, the dehydration speed is fast and the water quality is clear.

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Abstract

The invention discloses a ship clearance oil dehydrating agent and a preparation method thereof and relates to clearance oil. The ship clearance oil dehydrating agent comprises the following components in percentage by mass: 25-60 percent of three-block-polyether, 1-5 percent of a demulsifying compound and 35-70 percent of a solvent. The three-block-polyether can be selected from imidazoline poly-oxypropylene polyoxyethylene polyoxypropylene ethers and polyethylene polyamine poly-oxypropylene polyoxyethylene polyoxypropylene ethers by mixing; the demulsifying compound can adopt NaCl aqueous solution; and methanol or ethanol can serve as the solvent. The preparation method comprises the following steps: heating and dissolving the three-block-polyether, uniformly mixing with the demulsifying compound and the solvent, thereby obtaining the ship clearance oil dehydrating agent. The amount of the ship clearance oil dehydrating agent is small and is about 100-250ppm. The dehydration effect is good, the dehydration rate can be over 99.5 percent, the oil-water interface is clear, and the water is clear and transparent. The dehydration speed is high, and the time from the operation of adding the ship clearance oil dehydrating agent to the operation of allowing an oil-water transition layer to completely disappear is only 15 minutes. The broad spectrum property is high, and the cost is low.

Description

technical field [0001] The invention relates to clearance oil, in particular to a ship clearance oil dehydrating agent and a preparation method thereof. Background technique [0002] Clearance oil is the heavy oil (ship fuel oil) that is artificially cleaned out from the ship's oil tank, of which 180 # Mostly heavy oil. Heavy oil is the remaining heavy oil after gasoline and diesel oil are extracted from crude oil, which is characterized by large molecular weight and high viscosity. The specific gravity of heavy oil is generally 0.82-0.95, and the specific heat is about 10,000-11,000kcal / kg. Its composition is mainly hydrocarbons. In addition, it contains a part (about 0.1-4%) of sulfur and a trace amount of inorganic compounds. According to the classification method of international conventions, heavy oil is called persistent oil. As the name suggests, this kind of oil is relatively viscous and difficult to volatilize. So once it lands, it is very difficult to remove. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C08G65/26
CPCC08G65/2624C08G65/263C10G33/04C10G2300/80
Inventor 史琛
Owner 宁夏捷全油气技术服务有限公司
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