The invention discloses a heavy oil hydroprocessing method and an internal loop reactor used by the method In the heavy oil hydroprocessing method of the invention, the internal loop reactor is internally divided into two reaction segments, namely a fluidized bed reaction segment in a sleeve and a fixed bed reaction segment of a loop gap, and the mixture of heavy oil and hydrogen gas enters the reactor from the bottom and passes through the fluidized bed reaction segment first to undergo hydrogenation in the presence of a fluidized bed catalyst; and the catalyst is separated from the mixtureafter the reaction by a separator arranged on the upper part of the sleeve, and gas and liquid continuously go downwards to enter the fixed bed reaction segment of the loop gap to further undergo thehydrogenation in the presence of a fixed bed catalyst The method has the combined characteristics of the fluidized bed and fixed bed hydrogenation processes, is well adapted to inferior raw materialoil with high metal and high asphaltene content and can realize the long-period stable operation of the device under the condition of achieving a high conversion rate and a high impurity removal rate

Heavy oil hydroprocessing method and reactor

The invention relates to a purification method for waste lubricant oil, wherein the purification method organically combines the technique processes of waste lubricant oil pre-treatment, adsorption treatment, thin film evaporation, molecular distillation, hydrofinishing and the like, so that the yield of base oil is increased, and the quality of the base oil is improved simultaneously.

Purification method and device for waste lubricant oil

A fluidized-bed reactor and a hydrotreating method thereof. The fluidized-bed reactor (7) comprises a reactor shell (103) vertical to the ground, a phase separator (111) at the upper part in the shell (103), and an inner circulation zone under the phase separator (111). The inner circulation zone comprises a cylinder (114), a tapered diffusion section (115) and a guiding structure (104). In the hydrotreating method using the fluidized-bed reactor (7), an expanded-bed reactor (3) can further hydrotreat partial product of the fluidized-bed reactor (7) and supply catalyst without influence on the stable process of the fluidized-bed reactor (7).

Fluidized-bed reactor and hydrotreating method thereof

The utility model discloses an organosilicone fluidized bed reactor. An upper shell cover (3) and a lower shell cover (12) are respectively installed on the upper end and the lower end of a shell body (1). The shell body (1), the upper shell cover (3) and the lower shell cover (12) form the integrated reactor. Heat exchange tubes (14), gas distribution tubes (9), an upper grille (2) and a lower grille (13) are installed in a cavity of the shell body (1). The upper grille (2) and the lower grille (13) are correspondingly installed on the upper portion and lower portion inside the shell body (1). A plurality of heat exchange tubes (14) are installed between the upper grille (2) and the lower grille (13) inside the shell body (1). Heating media or cooling media is circulated in the heat exchange tubes (14). A plurality of gas distribution tubes (9) are arranged between the heat exchange tubes (14). Feed gas chloromethane gas is circulated in the gas distribution tubes (9). A plurality of gas holes (15) are disposed on side faces of the gas distribution tubes (9). A gas distribution disk (10) is installed in the lower shell cover (12) and connected with the gas distribution tubes (9). The gas distribution disk (10) is also connected with a feed gas inlet connecting tube (11). The organosilicone fluidized bed reactor overcomes the defects of an existing organosilicone fluidized bed reactor, is reasonable in structure, high in heat transfer and mass transfer efficiency, large in contact area between the chloromethane gas and silica powders, and uniform in distribution of gas inside the silica powders.

Organosilicone fluidized bed reactor

Hydrotreating device and application thereof as well as residual oil hydrotreating method

The invention discloses a novel boiling bed combining technique. The technical flows are as follows: a heavy hydrocarbon oil material after being mixed with hydrogen enters a boiling bed reactor in a mode of flowing to the upside for reaction; a gas effluent after reaction is directly fed into a fixed bed reactor in the down stream for carrying out hydrogenation refining; a liquid effluent is discharged under the control of a liquid control system arranged on the reactor and is directly fed into a middle-low temperature low-pressure separator after decompression for separating; the separated gas is fed into the fixed bed for hydrogenation and the liquid is discharged as a catalyzing-cracking material. The combining technique omits a high-temperature high-pressure separating device, avoids hot oil from generating a coking reaction in heat and high-pressure separation; simultaneously the heat source of the gas effluent is fully used to lead the technique to be compact, save energies and save the cost.

Bubbling bed combined process

The invention discloses a regeneration method for a heavy oil hydro-treating catalyst. The regeneration method comprises the following steps of: performing dry distillation, washing with an acidic solution, and performing roasting coke removal treatment, wherein the dry distillation temperature is 300 to 550 DEG C, the acidic solution is a hydrochloric acid-containing solution, the weight ratio of the washing acid to the catalyst is 5 to 50L/Kg, and the acid concentration is 0.1 to 0.5mol/L. Compared with the prior art, the regeneration method has the advantage of well recovering the service performance of an inactivated catalyst.

Regeneration method for heavy oil hydro-treating catalyst

The invention discloses a new fluidized bed hydrogenation reactor The fluidized bed hydrogenation reactor of the invention comprises a cylinder-shaped reactor shell perpendicular to the ground, a three-phase separator arranged at the upper part in the reactor shell and a guiding structure arranged at the middle upper part of the reactor The guiding structure is an annular convex structure arranged on the inner wall of the reactor and has the lengthwise section of a trapezoid or an arc along the axle of the reactor The combination of the guiding structure and the three-phase separator increases the operating flexibility of the three-phase separator, and ensures the high-efficiency separation on the three-phase separator, thereby greatly reducing the carrying amount of catalyst The fluidized bed hydrogenation reactor of the invention can be applied to the chemical reactions between different liquids or gases and solid grains under the condition of contacting, and is characterized bylarge catalyst inventory, high reactor utility ratio, etc

Novel bubbling bed reactor

The invention discloses a fluidized bed reactor comprising a reactor shell and a three-phase separator, wherein the three-phase separator is arranged at the upper part inside the reactor shell and is in a sleeve structure including an inner sleeve and an outer sleeve; the upper ends and the lower ends of the inner sleeve and the outer sleeve are in opened structures; the inner sleeve and the outer sleeve both comprise upper segments and lower segments which are connected with each other; the upper segments of the inner sleeve and the outer sleeve are both in reversed frustum-shaped structures, and the lower segments of the inner sleeve and the outer sleeve are both in cylinder-shaped structures; and an opening positioned on the upper end of the outer sleeve is higher than an opening positioned on the upper end of the inner sleeve. The fluidized bed reactor is mainly suitable for chemical reaction carried out under the condition that different liquid and gaseous matters contact with solid particles, has the advantages of large catalyst inventory, high reactor utility ratio, simple structure and easy operation and is suitable for long-periodic stable operation, and the like.

Fluidized bed reactor

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