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A method for adsorption and desulfurization of petroleum hydrocarbons

A technology for adsorption desulfurization and petroleum hydrocarbons, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc. It can solve the problems of increasing energy consumption and wasting hydrogen, and achieve the effect of saving energy consumption, reducing wear, and continuous reaction.

Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal components undergo unnecessary regeneration and reduction, which wastes a lot of hydrogen and increases energy consumption

Method used

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  • A method for adsorption and desulfurization of petroleum hydrocarbons
  • A method for adsorption and desulfurization of petroleum hydrocarbons
  • A method for adsorption and desulfurization of petroleum hydrocarbons

Examples

Experimental program
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Effect test

Embodiment 1

[0066] use as image 3 The reaction device shown, wherein the fixed-fluidized bed reactor structure is as attached figure 1 shown. In the fixed-fluidized bed reactor, the fixed bed layer is filled with hydrodesulfurization catalyst RSDS-21, and the fluidized bed layer uses desulfurization adsorbent Cat-1. The catalytic cracking gasoline raw material is added to the fixed bed layer through the fluid feed port for reaction, and the operating conditions of the fixed-fluidized bed reactor: the pressure is 5.0MPa, and the hydrogen-to-oil ratio is 0.4Nm 3 / m 3 , the reaction temperature is 420°C, and the reaction weight hourly space velocity is 4h -1 . The superficial gas velocity of the fluidized bed is 0.3m / s, the residence time of the desulfurization adsorbent in the fluidized bed is 30 minutes, and the temperature of the adsorbent regenerator is 550°C. Product properties and hydrogen consumption are shown in Table 4.

Embodiment 2

[0068] use as image 3 The reaction device shown, wherein the fixed-fluidized bed reactor structure is as attached figure 2 shown. In the fixed-fluidized bed reactor, the fixed bed layer is filled with hydrodesulfurization catalyst RSDS-21, and the fluidized bed layer uses desulfurization adsorbent Cat-2. The catalytic cracking gasoline raw material is added to the fixed bed layer through the fluid feed port for reaction. The operating conditions of the fixed-fluidized bed reactor: the pressure is 3MPa, and the hydrogen-to-oil ratio is 0.5Nm 3 / m 3 , the reaction temperature is 440°C, and the reaction weight hourly space velocity is 5h -1 , the superficial gas velocity of the fluidized bed is 0.1m / s, the residence time of the desulfurization adsorbent in the fluidized bed is 10 minutes, and the regeneration temperature of the adsorbent is 550°C. Product properties and hydrogen consumption are shown in Table 4.

Embodiment 3

[0070] use as image 3 The reaction device shown, wherein the fixed-fluidized bed reactor structure is as attached figure 2 shown. In the fixed-fluidized bed reactor, the fixed bed layer is filled with hydrodesulfurization catalyst RSDS-21, and the fluidized bed layer uses desulfurization adsorbent Cat-3. The catalytic cracking gasoline raw material is added into the fixed bed layer through the fluid feed port for reaction. The operating conditions of the fixed-fluidized bed reactor: the pressure is 4MPa, and the hydrogen-to-oil ratio is 0.2Nm 3 / m 3 , the reaction temperature is 350°C, and the reaction weight hourly space velocity is 3h -1 , the superficial gas velocity of the fluidized bed is 0.6m / s, the residence time of the desulfurization adsorbent in the fluidized bed is 30 minutes, and the regeneration temperature of the adsorbent is 550°C. Product properties and hydrogen consumption are shown in Table 4.

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Abstract

A petroleum hydrocarbon adsorption desulfurization method adopts a fixed bed-fluidized bed reactor which is divided into a particle settling zone, a reaction zone and a gas buffer zone from top to bottom; the reaction zone is divided into a fixed bed layer and a fluidized bed layer in the radial direction from outside to inside or from inside to outside; a separation plate which enables gas to pass through and enables catalyst particles not to pass through is arranged between the lower part of the fixed bed layer as well as the fluidized bed layer and the gas buffer zone; a space between the upper part of the fixed bed layer and the particle settling zone is closed; the upper part of the fluidized bed layer communicates with the particle settling zone; the upper part of the fixed bed layer is provided with a fluid feed inlet; the particle settling zone is internally provided with a gas-solid separator; a gas phase outlet of the gas-solid separator is a fluid discharge outlet of the reactor; the fluidized bed layer is also provided with a fluidized catalyst inlet and outlet. The petroleum hydrocarbon adsorption desulfurization method provided by the invention simplifies device construction and operation process, saves the energy consumption, and is beneficial for realizing continuous reaction and regeneration of production.

Description

technical field [0001] The invention relates to a method for desulfurizing petroleum hydrocarbon fractions, more specifically, to an adsorption desulfurization method for petroleum hydrocarbon fractions. [0002] technical background [0003] Process intensification refers to the use of new technologies and new equipment in the production and processing process to achieve the optimal match between the reaction process and process factors such as heat transfer, mass transfer and concentration, thereby improving energy efficiency, increasing equipment production capacity, reducing waste discharge. Chemical process intensification is a long-term goal in the chemical industry at home and abroad, and it has attracted more attention in recent years. In many developed countries such as the United States, chemical process intensification is listed as one of the three major areas of priority development in chemical engineering. [0004] A variety of complex reactions are involved in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/06
Inventor 侯栓弟朱丙田武雪峰汪燮卿张久顺毛安国李锐张哲民张同旺宋宁宁刘凌涛赵俊杰
Owner CHINA PETROLEUM & CHEM CORP
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