Pneumatic particle separator, and fluidized bed reactor and its application

Abstract

The invention provides a pneumatic particle separator. The pneumatic particle separator comprises a separator body having a hollow structure, a discharge port, a wind outlet tube and a guiding wind inlet; the internal space of the separator body comprises a straight tube zone and a cone zone from top to down; the discharge port is positioned at the bottom of the cone zone; the guiding wind inlet is arranged at the upper portion of the straight tube zone along the tangential direction of the straight tube zone, and is connected with the internal space of the separator body; the wind outlet tube is inserted into the top of the separator body in a sealing manner, and downward extends to the lower portion of the straight tube zone; the bottom port of the wind outlet tube is sealed, the lower portion of the wind outlet tube is provided with a guiding wind outlet, the wind outlet tube and the internal space of the separator body are connected by the guiding wind outlet, and the guiding wind outlet is arranged along the tangential direction of the wind outlet tube. The invention also provides a fluidized bed reactor with the pneumatic particle separator provided therein, and its application. The pneumatic particle separator can efficiently separate large-granularity catalyst particles, and enables the catalyst particle fragmentation probability to be low in the separation process.

Description

technical field

[0001] The invention relates to an air flow particle separator, and also relates to a fluidized bed reactor and its application. Background technique

[0002] Petroleum hydrocarbons such as gasoline and diesel always contain some organic sulfur. These organic sulfurs release SO when burned x , the most important of which is sulfur dioxide (SO 2 ). Sulfur dioxide is the main pollution source of the atmospheric environment and the direct cause of acid rain. In order to control air pollution, countries successively put forward stricter restrictions on the sulfur content in gasoline through legislation. Europe, the United States and other countries and regions have proposed the "sulfur-free gasoline" standard with gasoline sulfur content ≯10μg / g.

[0003] At present, there are mainly two methods for deep desulfurization of oil products: hydrorefining and adsorption desulfurization. However, hydrodesulfurization generally has disadvantages such as harsh opera...

Examples

Embodiment 1

[0092] In this embodiment, four guiding air inlets (such as figure 2 As shown, the guide air inlet is set along the circumference of the straight cylinder area, and each guide air inlet has the same cross-sectional area perpendicular to the airflow direction), and three guides are arranged tangentially on the air outlet pipe of the airflow particle separator air outlet (such as figure 2 As shown, the guide air outlet is set along the circumference of the air outlet pipe, and the area of ​​each guide air outlet perpendicular to the air flow direction section is the same); the difference between the area of ​​the horizontal section of the straight barrel area and the area of ​​the horizontal section of the air outlet pipe for A 0 , the total area of ​​the cross-section perpendicular to the air flow directed to the air inlet is A 1 , the total area of ​​the cross-section perpendicular to the air flow directed to the air outlet is A 2 , A 1 / A 0 0.4:1, A 2 / A 0 is 0.2:1; ...

Embodiment 2

[0107] Adopt the method identical with embodiment 1 to carry out adsorption desulfurization, difference is, A 1 / A 0 0.24:1, A 2 / A 0 is 0.15:1, the linear velocity of the oil mixture at the guide air inlet of the airflow particle separator is 2.5m / s, and the linear velocity at the guide air outlet of the airflow particle separator is 4m / s.

[0108] Continuously for 500 hours. During the reaction, the composition of the obtained oil and gas product and the average particle size of the catalyst in the catalyst fine powder storage tank and the catalyst dense bed in the fluidized bed reactor were monitored, and the results are listed in Table 4. After reacting for 500 hours, the content of the catalyst with a particle size of less than 30 μm in the catalyst in the dense-phase bed in the fluidized bed reactor was 9.5% by weight. A total of 14.2kg of catalyst was loaded in the fluidized bed reactor before the reaction started, and 1.34kg of catalyst was added to the fluidized b...

Embodiment 3

[0124] Adopt the method identical with embodiment 1 to carry out adsorption desulfurization, difference is:

[0125] There are 6 guiding air inlets (such as figure 2 As shown, the guide air inlet is arranged along the circumference of the straight cylinder area, and each guide air inlet has the same cross-sectional area perpendicular to the air flow direction), and 6 guide guides are arranged tangentially on the air outlet pipe of the airflow particle separator air outlet (such as figure 2 As shown, the guide air outlet is set along the circumference of the air outlet pipe, and the area of ​​each guide air outlet perpendicular to the air flow direction section is the same); the difference between the area of ​​the horizontal section of the straight barrel area and the area of ​​the horizontal section of the air outlet pipe for A 0 , the total area of ​​the cross-section perpendicular to the air flow directed to the air inlet is A 1 , the total area of ​​the cross-section ...

technical field

[0001] The invention relates to an air flow particle separator, and also relates to a fluidized bed reactor and its application. Background technique

[0002] Petroleum hydrocarbons such as gasoline and diesel always contain some organic sulfur. These organic sulfurs release SO when burned x , the most important of which is sulfur dioxide (SO 2 ). Sulfur dioxide is the main pollution source of the atmospheric environment and the direct cause of acid rain. In order to control air pollution, countries successively put forward stricter restrictions on the sulfur content in gasoline through legislation. Europe, the United States and other countries and regions have proposed the "sulfur-free gasoline" standard with gasoline sulfur content ≯10μg / g.

[0003] At present, there are mainly two methods for deep desulfurization of oil products: hydrorefining and adsorption desulfurization. However, hydrodesulfurization generally has disadvantages such as harsh opera...

Examples

Embodiment 1

[0092] In this embodiment, four guiding air inlets (such as figure 2 As shown, the guide air inlet is set along the circumference of the straight cylinder area, and each guide air inlet has the same cross-sectional area perpendicular to the airflow direction), and three guides are arranged tangentially on the air outlet pipe of the airflow particle separator air outlet (such as figure 2 As shown, the guide air outlet is set along the circumference of the air outlet pipe, and the area of ​​each guide air outlet perpendicular to the air flow direction section is the same); the difference between the area of ​​the horizontal section of the straight barrel area and the area of ​​the horizontal section of the air outlet pipe for A 0 , the total area of ​​the cross-section perpendicular to the air flow directed to the air inlet is A 1 , the total area of ​​the cross-section perpendicular to the air flow directed to the air outlet is A 2 , A 1 / A 0 0.4:1, A 2 / A 0 is 0.2:1; ...

Embodiment 2

[0107] Adopt the method identical with embodiment 1 to carry out adsorption desulfurization, difference is, A 1 / A 0 0.24:1, A 2 / A 0 is 0.15:1, the linear velocity of the oil mixture at the guide air inlet of the airflow particle separator is 2.5m / s, and the linear velocity at the guide air outlet of the airflow particle separator is 4m / s.

[0108] Continuously for 500 hours. During the reaction, the composition of the obtained oil and gas product and the average particle size of the catalyst in the catalyst fine powder storage tank and the catalyst dense bed in the fluidized bed reactor were monitored, and the results are listed in Table 4. After reacting for 500 hours, the content of the catalyst with a particle size of less than 30 μm in the catalyst in the dense-phase bed in the fluidized bed reactor was 9.5% by weight. A total of 14.2kg of catalyst was loaded in the fluidized bed reactor before the reaction started, and 1.34kg of catalyst was added to the fluidized b...

Embodiment 3

[0124] Adopt the method identical with embodiment 1 to carry out adsorption desulfurization, difference is:

[0125] There are 6 guiding air inlets (such as figure 2 As shown, the guide air inlet is arranged along the circumference of the straight cylinder area, and each guide air inlet has the same cross-sectional area perpendicular to the air flow direction), and 6 guide guides are arranged tangentially on the air outlet pipe of the airflow particle separator air outlet (such as figure 2 As shown, the guide air outlet is set along the circumference of the air outlet pipe, and the area of ​​each guide air outlet perpendicular to the air flow direction section is the same); the difference between the area of ​​the horizontal section of the straight barrel area and the area of ​​the horizontal section of the air outlet pipe for A 0 , the total area of ​​the cross-section perpendicular to the air flow directed to the air inlet is A 1 , the total area of ​​the cross-section ...

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