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A method for measuring the activity of desulfurization adsorbent

A measurement method and adsorbent technology, applied in the separation method, measurement device, fluorescence/phosphorescence, etc., can solve the problems of long cycle, slow speed, long evaluation cycle, etc., and achieve the effect of simple operation

Active Publication Date: 2021-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can obtain the desulfurization rate of products in different periods, the evaluation period is too long, and the longest may take six cycles, and the net reaction time exceeds 84 hours
[0007] At present, the determination of the ZnO content in the adsorbent uses the X-ray diffraction (XRD) method. After obtaining the adsorbent sample from the industrial device, it is sent to a professional organization to analyze and measure the ZnO content in the adsorbent. This method is slow. long cycle

Method used

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  • A method for measuring the activity of desulfurization adsorbent
  • A method for measuring the activity of desulfurization adsorbent
  • A method for measuring the activity of desulfurization adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Put 16 grams of fresh desulfurization adsorbent FCAS in a small fixed-bed reactor, first reduce the adsorbent for 2 hours under the conditions of pressure 2.5 MPa, hydrogen 16 liters / hour, and temperature 400 ° C, and then use sulfur weight Fraction is 0.2% thiophene+n-octane (analytically pure, 99%) solution as hydrocarbon oil feedstock, at pressure is 2.5 MPa, hydrogen 16 liters / hour, weight hourly space velocity 5 hours -1 , the temperature is 400°C, and the desulfurization adsorption reaction is carried out under the reaction conditions of a hydrogen-oil molar ratio of 1. The sulfur content of the product is analyzed by a SINDIE online total sulfur analyzer. When the sulfur weight fraction of the desulfurization product is greater than 0.001%, the feed is stopped. The weight of the raw material entering into the reactor to contact and react with the adsorbent is measured by the feed weight flow meter as the weight of the desulfurization product. And the relative des...

Embodiment 2

[0062] Put 16 grams of the desulfurization adsorbent S1 to be tested in a small fixed-bed reactor, and first regenerate the adsorbent. The regeneration conditions are: regeneration stage 1, the regeneration temperature is 430°C, the pressure is normal pressure, and the regeneration gas is air and Mixed gas of nitrogen (8 liters / hour air + 8 liters / hour nitrogen), regeneration for 2 hours; regeneration stage 2, regeneration temperature is 480 ° C, pressure is 0.1 MPa, regeneration gas is a mixed gas of air and nitrogen (12 liters / hour air + 4 liters / hour nitrogen), regeneration for 2 hours; regeneration stage 3, regeneration temperature is 530°C, pressure is 0.1 MPa, regeneration gas is 16 liters / hour air, regeneration is 2 hours. Then at a pressure of 2.5 MPa, a hydrogen gas of 16 liters / hour, and a temperature of 400° C., the adsorbent was reduced for 0.5 hour, and then the sulfur weight fraction was 0.2% thiophene+n-octane (analytically pure, 99%) The solution is used as th...

Embodiment 3

[0064]Put 16 grams of the desulfurization adsorbent S2 to be tested in a small fluidized bed reactor, and first regenerate the adsorbent. The regeneration conditions are: regeneration stage 1, the regeneration temperature is 430 ° C, the pressure is 0.5 MPa, and the regeneration gas is Mixed gas of air and nitrogen (8 liters / hour of air + 8 liters / hour of nitrogen), regeneration for 2 hours; regeneration stage 2, regeneration temperature is 480 ° C, pressure is 0.5 MPa, regeneration gas is a mixture of air and nitrogen ( 12 liters / hour air + 4 liters / hour nitrogen); regeneration for 2 hours, regeneration stage 3, regeneration temperature 530°C, pressure 0.5 MPa, regeneration gas 16 liters / hour air, regeneration 2 hours. Then at a pressure of 1.5 MPa, a hydrogen gas of 32 liters per hour, and a temperature of 400° C., the adsorbent was reduced for 2 hours, and then the sulfur weight fraction was 0.2% thiophene+n-octane (analytically pure, 99%) The solution is used as the hydroc...

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Abstract

The invention relates to a method for measuring activity of a desulfurization adsorbent. The method comprises the steps that a, the to-be-measured desulfurization adsorbent is regenerated; b, the regenerated adsorbent having the weight M<c> and obtained in the step a is reduced; c, the reduced adsorbent obtained in the step b makes contact with a continuous feeding hydrocarbon oil raw material containing a thiophene compound, a desulfurization adsorption reaction is conducted under the hydrogen-contacting condition, and a desulfurization product with the weight being M<o> is obtained at most;and d, the desulfurization activity I<t> of the to-be-measured desulfurization adsorbent in unit weight is calculated through a formula (1), wherein the formula (1) is: (please see the specificationsfor the formula); e, a fresh desulfurization adsorbent is subjected to treatment from the step b to the step d to obtain the desulfurization activity I<f> of the fresh desulfurization adsorbent; and f, a relative desulfurization activity index of the to-be-measured desulfurization adsorbent is calculated through a formula (2), wherein the formula (2) is: (please see the specifications for the formula). The method is simple and easy to implement, and the activity of the adsorbent can be measured quickly and accurately.

Description

technical field [0001] The invention relates to a method for measuring the activity of a desulfurization adsorbent. Background technique [0002] As people pay more and more attention to environmental protection, the restrictions on the sulfur content in light hydrocarbons used as fuels are becoming more and more stringent. Taking gasoline as an example, the European Union has stipulated that the sulfur content should not exceed 50 μg / g in 2005, and in the Euro V gasoline standard planned to be implemented in 2010, the sulfur content should be less than 10 μg / g. China's National III standard, which was implemented on December 31, 2009, stipulates that the sulfur content of gasoline is not greater than 150 μg / g, and plans to promote the implementation of the National IV standard of gasoline sulfur content of not greater than 50 μg / g in 2014. [0003] The S-Zorb gasoline adsorption desulfurization process has been rapidly promoted in China due to its characteristics of high d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/28G01N21/64G01N27/00B01J20/34C10G45/02
CPCB01J20/3458C10G45/02C10G2300/202C10G2300/4006C10G2300/4012G01N21/3577G01N21/64G01N27/00G01N33/28
Inventor 王文寿徐莉刘宪龙毛安国刘玉良张久顺
Owner CHINA PETROLEUM & CHEM CORP