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A targeted anchoring and separation agent regeneration method for sulfur in oil products

A separation agent and targeted technology, applied in separation methods, filtration separation, filter regeneration, etc., can solve the problems of industrial waste residue environmental hazards, cumbersome process, consumption, etc., to avoid incomplete regeneration, easy to industrialize, and simple process Effect

Inactive Publication Date: 2020-08-28
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the main disadvantages of the application of adsorption technology in the desulfurization of oil products (especially heavy oil products) are that the capacity of the adsorbent is not high, the life is short, and frequent regeneration is required; some adsorbents cannot even be regenerated repeatedly in an effective way. Utilization, such as activated clay used in the refining process of lubricating base oil, basically cannot be recycled and reused, and waste adsorbents are often disposed of by burying them. A large amount of industrial waste generated has brought serious harm to the environment. Therefore, the regeneration of adsorbents Recycling is an urgent problem to be solved in adsorption desulfurization
At present, the existing regeneration method is mainly high-temperature roasting, but when this method is used, on the one hand, a large amount of sulfur gas oxides will be generated; on the other hand, high-temperature roasting may burn off part of the oil, resulting in a loss of oil combustion
Another method is to use solvent extraction to regenerate, but this method consumes a large amount of solvent, and cannot be completely desorbed and regenerated, and requires reprocessing of the solvent, which makes the process cumbersome and increases the cost

Method used

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  • A targeted anchoring and separation agent regeneration method for sulfur in oil products
  • A targeted anchoring and separation agent regeneration method for sulfur in oil products

Examples

Experimental program
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Embodiment 1

[0029] This embodiment provides a targeted anchoring and separation agent regeneration method for sulfur in oil, which includes the following steps:

[0030] 1. Preparation of target anchoring and separating agent

[0031] NiO / Fe 3 o 4 @SiO 2 The preparation of composite particles adopts excessive impregnation method, and its specific steps are as follows:

[0032] (1) Weigh 10.0g Fe 3 o 4 Magnetic nanoparticles were dispersed in dilute ammonia water with a concentration of 0.05M, 60.0g tetraethyl orthosilicate was added dropwise into the solution, stirred and hydrolyzed for 6 hours, and then separated to obtain Fe 3 o 4 @SiO 2 Core-shell composite particles;

[0033] (2) Weigh 0.13g nickel nitrate and dissolve it in 100ml deionized water, stir and dissolve completely to obtain 0.07M nickel nitrate solution; take 10.0g Fe 3 o 4 @SiO 2 The core-shell composite particles are placed in nickel nitrate solution and stirred for 10 hours;

[0034] (3) The mixture is subje...

Embodiment 2

[0042] With embodiment 1, just change the hydrogen air velocity into 800h -1 , to obtain the regenerated target anchoring and separating agent.

[0043] The desulfurization process of the regenerated targeting anchor and separating agent is the same as that of the targeting anchor and separating agent prepared in Example 1. The desulfurization results before and after regeneration are shown in Table 2.

Embodiment 3

[0045] With embodiment 1, just change the hydrogen air velocity into 1600h -1 , to obtain the regenerated target anchoring and separating agent.

[0046] The desulfurization process of the regenerated targeting anchor and separating agent is the same as that of the targeting anchor and separating agent prepared in Example 1. The desulfurization results before and after regeneration are shown in Table 2.

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Abstract

The invention relates to a regeneration method of a target anchoring and separating agent for sulfur in oil products. The regeneration method comprises following steps: hydrogen is introduced into the target anchoring and separating agent with sulfur absorbed, ahydrodesulfurization reaction is performed, and a regeneration process of the target anchoring and separating agent is completed; the target anchoring and separating agent is NiO / Fe3O4@SiO2. According to the regeneration method, the process is simple, activity of the regenerated target anchoring and separating agent is recovered well, the target anchoring and separating agent can be repeatedly used, defects of incomplete regeneration, high oil product heat value loss and the like caused by high-temperature roasting for regeneration of the target anchoring and separating agent are overcome, and industrialization is facilitated.

Description

technical field [0001] The invention relates to a targeted anchoring of sulfur in oil products and a method for regenerating a separating agent, belonging to the technical field of fine petrochemicals. Background technique [0002] Sulfur oxides (SO X ) is the main pollutant in the atmosphere, and will form acid rain at the same time, seriously endangering the environment and destroying the ecological balance; on the other hand, when oil is used as the initial raw material to synthesize other products, the sulfur compounds in it will pollute the catalyst used in the production process (especially noble metal catalysts), reducing its catalytic activity and shortening its service life. Therefore, oil deep desulfurization technology has attracted more and more attention from oil refiners in various countries, and has become one of the key technologies to improve oil quality. [0003] According to the different properties of sulfur compounds in oil, different methods can be us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01J20/10B01J20/06B01J20/28C10G25/12
CPCB01J20/06B01J20/103B01J20/28016B01J20/3433B01J20/3458C10G25/12C10G2300/202C10G2300/4006C10G2300/4012
Inventor 周广林马安罗聃李芹周红军
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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