Fluidized bed reactor and application thereof, and method for adsorbing and desulfurizing hydrocarbon oil

Abstract

The invention relates to a fluidized bed reactor and an application thereof, and a method for adsorbing and desulfurizing hydrocarbon oil, the fluidized bed reactor comprises a lower dense phase bed layer and an upper sparse phase bed layer, wherein the sparse phase bed layer is internally provided with a particle pre-separator and an inner layer fine powder collecting cone (5) ; the particle pre-separator consists of an outer layer flow deflector (2) and a secondary layer diversion cone (4), wherein the outer layer flow deflector (2) is composed of a top plate, a straight cylinder section, acone section and an outer layer flow deflector feeding pipe (13), an air inlet (3) is arranged on the side surface of the straight cylinder section, the conical skirt edge of the secondary layer diversion cone is seamlessly connected with the reactor cylinder body, and the bottom opening of the conical skirt edge is in the outer layer flow deflector; the top of the inner layer fine powder collecting cone (5) is connected with the reaction cylinder body through a rib plate; the bottom openings of the outer layer flow deflector feeding pipe (13) and the inner layer fine powder collecting cone feeding pipe (9) are in the dense phase bed layer. In the application process of the fluidized bed reactor, the abrasion in the separation process of the particles can be reduced, and the operation period of the device is prolonged.

Description

technical field [0001] The invention relates to a fluidized bed reactor and its application, more specifically, to a fluidized bed reactor for pre-sorting catalyst particles and its application. Background technique [0002] Fuel oil always contains some organic sulfur. These organic sulfurs release SO when burned x , the most important of which is sulfur dioxide. 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. Countries and regions such as Europe and the United States first proposed the "sulfur-free gasoline" standard with a gasoline sulfur content of ≯10μg / g, and my country is also fully implementing the National IV and V gasoline standards recently. [0003] At present, there are mainly two methods for deep desulfurization of oil products: hydrorefining and adsor...

AI Technical Summary

Problems solved by technology

[0009] Cyclone separator is a kind of solid powder commonly used to separate dust-containing gas and reduce the concentration of solid powder in dust-containing gas. However, compared with other solid catalysts, the mechanical strength of the catalyst for adsorption desulfurization is slightly lower. If In the adsorption desulfurization reactor, a conventional cyclone separator is used to pre-separate the dilute-phase suspended dust-containing gas in the desulfurization adsorption reactor. Due to the high flow rate of the gas flow in the cyclone separator, when separating oil gas and catalyst particles, particles and Strong collisions between particles and between particles and the wall of the cyclone separator can easily cause catalyst breakage

On the contrary, a large number of catalysts are broken, resulting in more fine powder in the fluidized bed reactor and faster catalyst consumption; the load on the metal filter is greater, which is more likely to cause a rapid increase in the pressure drop of the metal filter

Images