Coal tar hydrogenation reactor

Abstract

The utility model relates to the technical field of coal tar treatment, in particular to a coal tar hydrogenation reactor, which comprises a reaction tank, a catalyst placing net arranged in the reaction tank, a rotating shaft arranged in the reaction tank, a stirring rod arranged on the rotating shaft close to the catalyst placing net and positioned above the catalyst placing net, a driving motor for driving the rotating shaft to rotate is mounted at the top of the reaction tank, a catalyst feeding opening is formed in the side wall of the reaction tank close to the catalyst placing net, a distribution plate is mounted at the top of the inner side of the reaction tank, a cavity is formed in the distribution plate, a nozzle is mounted at the bottom of the distribution plate, and a coal tar input pipe is mounted at the top of the reaction tank; a hydrogen input pipe is mounted on the side wall of the top of the reaction tank; a discharge pipe is mounted at the bottom of the reaction tank; according to the utility model, a catalyst is put on the catalyst placing net, the stirring rod is driven by the driving motor to rotate, and the accumulated catalyst is flatly laid on the catalyst placing net, so that the catalyst is uniformly distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal tar processing, more precisely to a coal tar hydrogenation reactor. Background Art

[0002] Coal tar, a byproduct of semi-coke, coke, and coal gasification production, undergoes hydrogenation with the help of a hydrogenation catalyst to effectively remove sulfur, nitrogen, oxygen, and metals. It also hydrogenates and saturates olefins and aromatics, cracking large alkanes into smaller molecules. This increases the H / C ratio of the coal tar, improves oil quality, and yields high-quality fuel oil. The coal tar hydrogenation process primarily involves hydrorefining and hydrocracking, with the catalyst at its core. The ultimate success of coal tar hydrocracking to produce light fuel oil depends on the performance of the catalyst.

[0003] In coal tar hydrogenation reactors, uniform catalyst distribution is crucial to the efficiency and stability of the reaction. Uneven catalyst distribution can lead to inadequate utilization of the catalyst's active surface area, compromising the efficiency and conversion rate of the hydrogenation reaction. This can result in reduced product quality, lower yields, and even the formation of undesirable byproducts. Furthermore, uneven distribution can cause uneven temperature and pressure distribution within the reactor, leading to localized overheating or overpressure, increasing the risk of equipment damage. Furthermore, uneven catalyst distribution can affect the reactor's operational stability and safety.

[0004] The existing catalyst placement mainly relies on manual laying, which is time-consuming, labor-intensive, and inefficient. In addition, the temperature inside the reactor rises during the reaction process, which poses certain risks when manually replacing the catalyst later. Utility Model Content

[0005] The purpose of the utility model is to provide a coal tar hydrogenation reactor with uniformly distributed catalyst, thereby improving the efficiency and conversion rate of the hydrogenation reaction, increasing the output, avoiding uneven temperature and pressure distribution, and improving safety.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A coal tar hydrogenation reactor comprises a reaction tank, wherein a catalyst placement net is provided in the reaction tank, a rotating shaft is provided in the reaction tank, a stirring rod is provided on the rotating shaft near the catalyst placement net, the stirring rod is located above the catalyst placement net, and a gap is left between the stirring rod and the catalyst placement net, a driving motor for driving the rotating shaft to rotate is installed on the top of the reaction tank, a catalyst delivery port is provided on the side wall of the reaction tank near the catalyst placement net, a distribution plate is installed on the inner top of the reaction tank, a cavity is opened in the distribution plate, a nozzle connected to the cavity is installed at the bottom of the distribution plate, a coal tar input pipe connected to the cavity is installed on the top of the reaction tank, a hydrogen input pipe is installed on the top side wall of the reaction tank, and a discharge pipe is installed at the bottom of the reaction tank.

[0008] Furthermore, the catalyst placement nets and catalyst delivery ports are provided in multiple groups, and the catalyst placement nets are distributed in layers within the reaction tank.

[0009] Furthermore, the stirring rods are provided in multiple groups, and each group of stirring rods corresponds to the catalyst placement net one by one.

[0010] Furthermore, a cold hydrogen plate is provided between each two catalyst placement nets.

[0011] Furthermore, a temperature sensor and a pressure sensor are provided in the side wall of the reaction tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The catalyst is put into the catalyst placement net through the catalyst feeding port, and the stirring rod is driven by the driving motor to rotate, and the accumulated catalyst is spread flat on the catalyst placement net to make the catalyst evenly distributed. The coal tar is sprayed out through the nozzle, and the coal tar and hydrogen react. The evenly distributed catalyst improves the efficiency and conversion rate of the hydrogenation reaction, increases the output, avoids uneven temperature and pressure distribution, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] 1. Reaction tank; 2. Catalyst placement net; 3. Rotating shaft; 4. Stirring rod; 5. Driving motor; 6. Catalyst delivery port; 7. Distribution plate; 8. Nozzle; 9. Coal tar inlet pipe; 10. Hydrogen inlet pipe; 11. Discharge pipe; 12. Hydrogen cooling plate; 13. Temperature sensor; 14. Pressure sensor. DETAILED DESCRIPTION

[0016] like Figure 1As shown, a coal tar hydrogenation reactor comprises a reaction tank 1, wherein a catalyst placement net 2 is provided in the reaction tank 1, a rotating shaft 3 is provided in the reaction tank 1, a stirring rod 4 is provided on the rotating shaft 3 near the catalyst placement net 2, the stirring rod 4 is located above the catalyst placement net 2, and a gap is left between the stirring rod 4 and the catalyst placement net 2, a driving motor 5 for driving the rotating shaft 3 to rotate is installed on the top of the reaction tank 1, a catalyst delivery port 6 is provided on the side wall of the reaction tank 1 near the catalyst placement net 2, a distribution plate 7 is installed on the inner top of the reaction tank 1, a cavity is opened in the distribution plate 7, a nozzle 8 connected to the cavity is installed at the bottom of the distribution plate 7, a coal tar input pipe 9 connected to the cavity is installed on the top of the reaction tank 1, a hydrogen input pipe 10 is installed on the top side wall of the reaction tank 1, and a discharge pipe 11 is installed at the bottom of the reaction tank 1.

[0017] The catalyst is added to the catalyst placement net 2 through the catalyst introduction port 6, and the rotating shaft 3 is driven to rotate by the driving motor 5, which drives the stirring rod 4 to rotate, and the accumulated catalyst is spread on the catalyst placement net 2 to make the catalyst evenly distributed. Coal tar is injected through the coal tar input pipe 9, and the coal tar is sprayed out through the nozzle 8. Hydrogen is injected through the hydrogen input pipe 10, and the coal tar and hydrogen react. The evenly distributed catalyst improves the efficiency and conversion rate of the hydrogenation reaction, increases the output, avoids uneven temperature and pressure distribution, and improves safety.

[0018] The catalyst placement nets 2 and catalyst delivery ports 6 are provided in multiple groups, and the catalyst placement nets 2 are distributed in layers within the reaction tank 1 .

[0019] There are multiple groups of stirring rods 4 , and each group of stirring rods 4 corresponds to the catalyst placement net 2 one by one.

[0020] A cold hydrogen plate 12 is provided between each two catalyst placement nets 2; the introduction of cold hydrogen through the cold hydrogen plate 12 can effectively regulate the temperature in the reaction tank 1, ensure that the hydrogenation reaction is carried out within a suitable temperature range, improve the reaction efficiency, reduce the production of by-products, and protect the activity of the catalyst.

[0021] A temperature sensor 13 and a pressure sensor 14 are provided in the side wall of the reaction tank 1 .

[0022] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal tar hydrogenation reactor, characterized in that: The invention comprises a reaction tank (1), wherein a catalyst placement net (2) is provided in the reaction tank (1), a rotating shaft (3) is provided in the reaction tank (1), a stirring rod (4) is provided on the rotating shaft (3) near the catalyst placement net (2), the stirring rod (4) is located above the catalyst placement net (2), and a gap is left between the stirring rod (4) and the catalyst placement net (2), a driving motor (5) for driving the rotating shaft (3) to rotate is installed on the top of the reaction tank (1), and a rotating shaft (3) is provided on the side wall of the reaction tank (1). A catalyst delivery port (6) is provided near the catalyst placement net (2), a distribution plate (7) is installed on the inner top of the reaction tank (1), a cavity is provided in the distribution plate (7), a nozzle (8) connected to the cavity is installed at the bottom of the distribution plate (7), a coal tar input pipe (9) connected to the cavity is installed at the top of the reaction tank (1), a hydrogen input pipe (10) is installed on the top side wall of the reaction tank (1), and a discharge pipe (11) is installed at the bottom of the reaction tank (1).

2. The coal tar hydrogenation reactor according to claim 1, wherein: The catalyst placement nets (2) and catalyst delivery ports (6) are provided in multiple groups, and the catalyst placement nets (2) are distributed in layers within the reaction tank (1).

3. The coal tar hydrogenation reactor according to claim 2, wherein: The stirring rods (4) are provided in multiple groups, and each group of the stirring rods (4) corresponds one-to-one to a catalyst placement net (2).

4. The coal tar hydrogenation reactor according to claim 2, wherein: A cold hydrogen plate (12) is provided between each two catalyst placement nets (2).

5. The coal tar hydrogenation reactor according to claim 1, wherein: A temperature sensor (13) and a pressure sensor (14) are provided in the side wall of the reaction tank (1).

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