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Nonaqueous phase oil product deep desulfurizing device and desulfurizing process

A desulfurization device and a technology for deep desulfurization, which are applied in the petroleum industry, processing hydrocarbon oil, refining with oxygenated compounds, etc., can solve the problem of increasing the reaction operation time and operation cost, reducing the contact area and mass transfer rate between phases, and a three-phase system. Mixing effect limitation and other problems, to increase the interphase contact area and mass transfer rate, solve the operation time and operation cost, and achieve the effect of large operation flexibility

Inactive Publication Date: 2019-03-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing oxidative desulfurization of oil products use liquid oxidants such as hydrogen peroxide, and carry out heterogeneous catalytic oxidation reactions in stirred reactors. This type of device has obvious defects: the system will have stratification and emulsification during the reaction process, which is extremely difficult. Greatly reduce the contact area and mass transfer rate between phases; in addition, as a mixing system, the stirring paddle takes up the volume of the reactor and increases the cost, and the macroscopic mixing effect of the three-phase system is greatly limited
After the reaction of this type of system, there is a complex catalyst separation process, which virtually increases the reaction operation time and operation cost, making it difficult to operate stably under the condition of large throughput

Method used

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  • Nonaqueous phase oil product deep desulfurizing device and desulfurizing process
  • Nonaqueous phase oil product deep desulfurizing device and desulfurizing process
  • Nonaqueous phase oil product deep desulfurizing device and desulfurizing process

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Experimental program
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Effect test

Embodiment 1

[0109] The preparation of embodiment 1 catalyst

[0110] The NaY molecular sieve was activated under an air atmosphere at 500° C. for 4 hours to remove impurities and carbon deposits in the molecular sieve to obtain an activated NaY molecular sieve.

[0111] At 90°C, N 2 Atmosphere, 0.1mol / L CoCl 2 The solution and the activated NaY molecular sieve were fully stirred and refluxed for 24 hours according to the solid-liquid ratio of 1:10, filtered and the filter cake was washed several times with distilled water until there were no chloride ions in the filtrate, and the filter cake was vacuum-dried at 110°C for 12 hours to obtain a light pink CoY molecular sieve .

[0112] Under normal temperature and pressure, salicylaldehyde and ethylenediamine react at a molar ratio of 2:1, salicylaldehyde is dissolved in ethanol and added to the three-hole flask, and ethylenediamine dissolved in ethanol solution is added to the three-necked flask in a dropwise manner , a large number of y...

Embodiment 2

[0114] Embodiment 2 desulfurization treatment

[0115] Deep desulfurization device is used for oil desulfurization, desulfurization device such as figure 1 shown.

[0116] The temperature control system sets the temperature of the reactor at 100°C, controls the cryogenic cold trap to about 0°C, air enters the reactor through the sand core aeration plate, and 200ppm dibenzothiophene simulated oil enters the reactor from the liquid phase feed port. Add 0.8g Co(salen)Y into the reaction system, the air velocity is 100mL / min, and the simulated oil volume is 100mL. Add 100mL of glass spring packing to the reactor, so that all the feed liquid enters the packing, wherein, the diameter of a single packing is 4mm-6mm, and the length is 10-16mm. React under normal pressure for 4 hours, take a sample after the reaction process, filter the sample and analyze by gas chromatography to calculate the desulfurization rate to be 97.91%. Desulfurization rate = (initial amount of dibenzothioph...

Embodiment 3

[0117] Embodiment 3 desulfurization treatment

[0118] The desulfurization device is consistent with Example 2.

[0119] The temperature control system sets the temperature of the reactor at 60°C, controls the low-temperature cold trap to about 0°C, air enters the reactor through the sand core aeration plate, and 500ppm dibenzothiophene simulated oil enters the reactor from the liquid phase feed port. Add 0.8g Co(salen)Y into the reaction system, the air velocity is 100mL / min, and the simulated oil volume is 100mL. React under normal pressure for 4 hours, take a sample after the reaction process, filter the sample and analyze by gas chromatography to calculate the desulfurization rate to be 35.42%.

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Abstract

The invention provides a nonaqueous phase oil product deep desulfurizing device and a desulfurizing process. The process comprises the following steps: adding an oil product into a desulfurizing device, introducing a gas oxidizing agent into the oil product, performing an oxidizing-desulfurizing process in the presence of a catalyst under the set reaction condition. By adopting the nonaqueous phase oil product deep desulfurizing device, the phenomenon of emulsification of the oil phase and water phase in the catalytic oxidation of the oil product for desulfurizing is avoided, and the sulphur content in oil product can be lowered to 10 ppm or less by using molecular oxygen biomimetic catalysis.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a non-aqueous phase oil deep oxidation desulfurization device and a desulfurization process. Background technique [0002] At present, the extracted crude oil presents the characteristics of high sulfidation and heavy quality. Combustion of sulfur-containing oil is one of the main sources of air pollution, and the resulting SO 2 It will form acid rain to corrode buildings; when in use, the sulfur compounds produced by the combustion of gasoline and diesel will deactivate the three-way catalyst of automobile exhaust, corrode and damage automobile engines, cause automobile nitrogen oxides and CO emissions to exceed the standard, and accelerate the deterioration of environmental problems. During the storage and transportation of sulfur-containing oil products, sulfur-containing organic substances in the oil products will cause corrosion damage to containers, pipeli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/10
CPCC10G27/10C10G2300/202
Inventor 余江王新雷贾伟
Owner BEIJING UNIV OF CHEM TECH
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