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A method for removing dissolved oxygen in oil products

A technology for dissolved oxygen and oil products, applied in chemical instruments and methods, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of low deoxidation efficiency of gasoline, and achieve the effects of complete deoxidation reaction, prolonged catalyst life and easy operation.

Active Publication Date: 2022-04-01
SINOPEC JINLING PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the oxygen removal efficiency of gasoline in this patent is still low

Method used

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  • A method for removing dissolved oxygen in oil products
  • A method for removing dissolved oxygen in oil products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of embodiment 1 catalyst A

[0032] In this example, an alumina powder with two types of pores (the pore size distribution ranges of the two types of pores are 10-20nm and 150-300nm respectively) is used to prepare the second layer of carrier, and mullite is used as the first layer of carrier , effectively combined to obtain a carrier containing inner and outer layers, and to prepare a catalyst.

[0033] Take 500 grams of high-purity Al 2 o 3 powder, 196 grams of high-purity SiO 2 Powder, 70 grams of water, 10 grams of 10% nitric acid were mixed, kneaded for 1 hour, pressed into pellets, placed in a closed space at 70°C under constant temperature and humidity conditions and continued to react for 10 hours, and then dried at 150°C for 2 hours. Then bake at 1450° C. for 1 hour to obtain the first layer of carrier pellets with a diameter of 2.0 mm. XRD analysis showed mullite crystal form.

[0034] Take 50 grams of alumina powder (with two types of por...

Embodiment 2

[0037] The preparation of embodiment 2 catalyst B

[0038] In this example, alumina powder with one type of pores (the pore size distribution range is 15-30nm) is used, and the pore-forming agent methylcellulose is added to prepare the second layer of carrier with two types of pores, and mullite As the first carrier, it is effectively combined to obtain a carrier containing inner and outer layers, and a catalyst is prepared.

[0039] The first layer of carrier was prepared according to the method of Example 1.

[0040] Take 50 grams of alumina powder (with one type of pores, the pore size distribution range is 15-30 nm), 20 grams of 20% nitric acid, 12 grams of methyl cellulose, and 600 grams of water are mixed and stirred to prepare alumina slurry. Molded according to the method of Example 1, a carrier containing inner and outer layers was obtained. Analysis showed that the thickness of the second layer of support was 110 μm, and the ratio of the diameter of the first layer...

Embodiment 3

[0043] The preparation of embodiment 3 catalyst C

[0044] In this example, an alumina powder with two types of pores (the pore size distribution ranges of the two types of pores are 8-18nm and 200-500nm respectively) is used to prepare the second layer of carrier, and mullite is used as the first layer of carrier , effectively combined to obtain a carrier containing inner and outer layers, and to prepare a catalyst.

[0045] The first layer of carrier was prepared according to the method of Example 1.

[0046] Take 50 grams of alumina powder (with two types of pores, the pore size distribution ranges of the two types of pores are 8-18nm and 200-500nm respectively), 20 grams of 20% nitric acid, and 600 grams of water are mixed and stirred for 2 hours to prepare alumina material pulp. Molded according to the method of Example 1, a carrier containing inner and outer layers was obtained. Analysis showed that the thickness of the second layer of support was 240 μm, and the rati...

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Abstract

The invention relates to a method for removing dissolved oxygen in an oil product, which is characterized in that the oil product is fully mixed with hydrogen through a mixer before entering the reactor, and then enters the reactor to be in contact with a deoxygenation catalyst, the catalyst It includes a carrier and at least one catalytic component loaded on the carrier, the carrier includes at least a first layer of carrier and a second layer of carrier, and the second layer of carrier covers the first layer from space. layer support, said second layer support depositing at least one of said catalytic components. The invention has good oxygen removal stability, high efficiency and long service life, and the removal rate of trace dissolved oxygen in oil products can reach more than 95%.

Description

technical field [0001] The invention relates to a method for removing oxygen, in particular to a method for removing dissolved oxygen in oil products. Background technique [0002] Many industrial processes include oxygen removal processes, such as the treatment of boiler water and oilfield water and the purification of high-purity gas, propylene, syngas and other gases. The methods of oxygen removal mainly include two categories: physical oxygen removal and chemical oxygen removal. It is divided into chemical absorption (adsorption) deoxygenation, using oxygen to react with activated carbon and other oxygen scavenger to generate carbon dioxide deoxygenation, using variable price oxide reducing agent to remove oxygen, catalytic hydrogenation and deoxygenation, etc. [0003] In the process of petrochemical industry, straight-run oil products such as kerosene are often dissolved with trace oxygen during storage and transportation. Dissolved oxygen will react with unstable hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/04B01J23/44B01J23/50B01J23/62B01J35/10B01J32/00B01J37/02
CPCC10G45/04B01J23/626B01J23/628B01J23/44B01J23/50B01J35/109B01J35/1061B01J35/1066B01J35/1071B01J37/0215C10G2300/202C10G2300/4006C10G2300/4012C10G2300/4018B01J21/00B01J23/62B01J35/10B01J37/02
Inventor 王玉刘冬蔡吉乡许正跃凌正国周立群顾文忠曹晶耿祖豹施祖伟邱祥涛赵宏仪许艺
Owner SINOPEC JINLING PETROCHEMICAL CO LTD
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