Crude benzene hydrofining device

Abstract

The utility model discloses a crude benzene hydrofining device, and particularly relates to the technical field of crude benzene processing, the crude benzene hydrofining device comprises a mounting plate, a reaction tank and a containing box, the reaction tank is arranged on one side of the top of the mounting plate, the containing box is arranged on one side, far away from the reaction tank, of the top of the mounting plate, and a containing box is mounted at the top end in the containing box; guide pipes are mounted close to two ends of the top of the accommodating box; a moving plate is mounted at the bottom of the accommodating box; the top of the containing box and the top end of the containing box are attached to each other and connected in a sealed mode. Moving plates at the tops of the two ends of the containing box penetrate through the top of the containing box. A plurality of electric heating rods are slidably connected into the containing box, sealing connecting blocks are arranged at the positions, corresponding to the electric heating rods, of the top of the movable plate, and the bottoms of the electric heating rods are fixed to the sealing connecting blocks. The heating device has the advantages that uniform heating is convenient, heat loss is reduced, heating efficiency is improved, heating is convenient to control, and heating is stopped in time.

Description

Technical Field

[0001] The utility model relates to the technical field of crude benzene processing, in particular to a crude benzene hydrogenation refining device. Background Art

[0002] The benzene hydrogenation process refers to removing the heavy components from the raw coking crude benzene, then adding hydrogen to the light components, and reacting under high temperature and high pressure in a reactor under the action of a special catalyst to convert unsaturated dienes and monoolefins into saturated hydrocarbons. Then, through processes such as extraction and distillation, impurities such as sulfur, nitrogen, and oxygen are removed to obtain high-purity benzene, toluene, etc.

[0003] The invention discloses a crude benzene hydrogenation production equipment with the existing publication number CN115532196B, which relates to the technical field of crude benzene hydrogenation production, and comprises a reactor, a hydrogenation tank arranged on one side of the reactor, a pumping device arranged on the top of the hydrogenation tank, and a supply pipe arranged on the gas outlet end of the top of the pumping device; a flame retardant cavity is reserved between the outer wall of the inner tank and the inner wall of the hydrogenation tank; an anti-leakage mechanism is arranged inside the fixed pipe; through the cooperation of the hydrogenation tank, the lanthanum-nickel alloy and the heating support plate, in the process of the production reaction of crude benzene, the storage capacity of the hydrogenation tank for hydrogen is increased, and it is convenient to absorb and reversibly release a large amount of hydrogen under certain temperature and pressure conditions through the reversible process between the lanthanum-nickel alloy and the hydrogen; the anti-leakage mechanism is used to improve the anti-leakage effect of the hydrogenation tank when injecting hydrogen; and the safety performance of the stored hydrogen is improved.

[0004] In the above technology, when heating, it is necessary to start the external heating gas supply equipment to supply hot gas to the inside of the heating chamber through the guide pipe, so as to heat the heating support plate. The heating of the heating support plate facilitates the heating of the inner tank, thereby heating the metal hydride, and the heated metal hydride facilitates the separation of hydrogen from the alloy. The heating process needs to be conducted through multiple layers of materials, resulting in too low heat transfer efficiency. At the same time, the contact area between the heating support plate and the final alloy is relatively fixed, resulting in that only the bottom can be heated during the reaction, affecting the overall reaction efficiency. At the same time, due to the fixed position of the heating support plate, when it is necessary to stop the heating urgently or immediately, there is a lack of corresponding processing methods. Even if the heat source is turned off, the heating support plate cannot be cooled down immediately, resulting in the alloy still being heated and continuing to produce hydrogen, posing a safety hazard. Utility Model Content

[0005] The utility model aims to provide a crude benzene hydrogenation refining device, which solves the existing problems of low heating efficiency and failure to timely cool down and control heating.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crude benzene hydrorefining device, comprising a mounting plate, a reaction tank and a containing box, wherein the reaction tank is arranged on one side of the top of the mounting plate, the containing box is arranged on one side of the top of the mounting plate away from the reaction tank, a containing box is installed on the top of the containing box, a conduit is installed on the top of the containing box near both ends, and a movable plate is installed on the bottom of the containing box;

[0007] The top of the receiving box and the top of the receiving box are closely connected to each other, and the movable plates at the tops of both ends of the receiving box penetrate the top of the receiving box;

[0008] A plurality of electric heating rods are slidably connected inside the containing box, a sealing connection block is arranged at the top of the movable plate and at the corresponding position of the electric heating rod, and the bottom of the electric heating rod and the sealing connection block are fixed to each other.

[0009] Preferably, a connecting pipe is installed on the top of the reaction tank, one side of the side wall of the reaction tank is connected with the conduit, and an electric control switch is provided inside the conduit at one end close to the top of the containing box.

[0010] Preferably, the interior of the containing box is interconnected with the conduit, a through hole corresponding to the electric heating rod is opened at the inner bottom end of the containing box, the interior of the containing box is filled with lanthanum-nickel alloy for hydrogen absorption and storage, the interior of the containing box is closed and not interconnected with the interior of the containing box, and the bottom end of the containing box is slidably and sealedly connected with the electric heating rod.

[0011] Preferably, the interior of the electric heating rod is filled with electric heating wires, the interior of the sealing connection block is provided with electric wires interconnected with the electric heating wires, and the diameter of the sealing connection block is larger than the diameter of the electric heating rod.

[0012] Preferably, both ends of the movable plate are slidably connected to the interior of the containing box, the interior of the containing box is filled with circulating water, connecting water pipes are installed on the top and bottom side walls of the containing box, and a sensor is installed on the top of the containing box.

[0013] Preferably, electric push rods are provided at the tops of both ends of the movable plate, the tops of the outer walls of the electric push rods are fixedly connected to the top of the accommodating box, and the bottom extended ends of the electric push rods are fixedly connected to the movable plate.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The heating rod can heat the metal hydride inside the container. Through multiple evenly distributed heating rods, the metal hydride can be heated evenly, so that the separation of hydrogen from the alloy by the metal hydride can be carried out evenly, effectively maintaining the efficiency of hydrogen separation. At the same time, because the heating rod of the heating device is in direct contact with the metal hydride, the heat transfer steps are reduced, which can effectively avoid heat loss.

[0016] 2. Directly stopping the heating of the electric heating rod can eliminate the heat source and prevent the metal hydride in the containing box from continuing to heat up. It can also start the electric push rod to extend, so that the electric push rod drives the bottom movable plate to move toward the bottom end, and the movable plate drives the electric heating rod to move through the sealing connection block, so that the electric heating rod moves from the containing box to the bottom containing box, thereby eliminating the contact between the outer wall of the electric heating rod and the metal hydride inside the containing box, thereby effectively isolating the heating and the residual heat of the electric heating rod, preventing the metal hydride from continuing to be heated, and being able to more effectively control the temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the container of the utility model;

[0021] Figure 4 It is a schematic diagram of the internal connection structure of the containing box and the containing box of the utility model;

[0022] Figure 5 It is a schematic diagram of the external connection structure of the movable plate of the utility model.

[0023] Description of reference numerals:

[0024] 1. Mounting plate; 2. Reaction tank; 201. Connecting pipe; 3. Container; 301. Sensor; 4. Container; 401. Heating rod; 5. Moving plate; 501. Electric push rod; 502. Sealing connection block; 6. Conduit; 601. Electric switch. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-Figure 5 A crude benzene hydrorefining device shown in the figure comprises a mounting plate 1, a reaction tank 2 and a containing box 3, wherein the reaction tank 2 is arranged on one side of the top of the mounting plate 1, and the containing box 3 is arranged on the side of the top of the mounting plate 1 away from the reaction tank 2, a containing box 4 is installed on the top of the containing box 3, and conduits 6 are installed on the top of the containing box 3 near both ends, and a movable plate 5 is installed on the bottom of the containing box 4; the top of the containing box 4 and the top of the containing box 3 are fitted and closed with each other, and the movable plates 5 on the tops of both ends of the containing box 4 penetrate the top of the containing box 3; a plurality of electric heating rods 401 are slidably connected inside the containing box 4, and a sealing connection block 502 is arranged at the top of the movable plate 5 and at the corresponding position of the electric heating rod 401, and the bottom of the electric heating rod 401 and the sealing connection block 502 are fixed to each other.

[0027] like Figure 1 , Figure 2 As shown, a connecting pipe 201 is installed on the top of the reaction tank 2, and one side of the side wall of the reaction tank 2 is interconnected with the conduit 6. An electric control switch 601 is provided inside the end of the conduit 6 close to the top of the containing box 3, which can conveniently transport hydrogen to the containing box 4 through the conduit 6. At the same time, hydrogen can also be transported to the reaction tank 2 through the conduit 6 at the other end. The crude benzene is then transported to the reaction tank 2 through the connecting pipe 201, and then it is hydrogenated and refined.

[0028] like Figure 3 , Figure 5 As shown, the interior of the containing box 4 is interconnected with the conduit 6, and a through hole corresponding to the electric heating rod 401 is provided at the bottom of the interior of the containing box 4. The interior of the containing box 4 is filled with a lanthanum-nickel alloy for hydrogen absorption and storage. The interior of the electric heating rod 401 is filled with electric heating wires. The interior of the sealing connection block 502 is provided with electric wires interconnected with the electric heating wires. The diameter of the sealing connection block 502 is larger than the diameter of the electric heating rod 401. The multiple electric heating rods 401 are started to heat up, so that the electric heating rods 401 heat the metal hydride inside the containing box 4. Through the multiple evenly distributed electric heating rods 401, the metal hydride can be easily heated evenly, and then the metal hydride will separate hydrogen from the alloy, and hydrogen can be evenly generated. The interior of the containing box 4 is closed and not interconnected with the interior of the containing box 3. The bottom end of the containing box 4 and the electric heating rod 401 are slidingly and sealingly connected to each other, which can prevent hydrogen from entering the interior of the containing box 3 and avoid leakage.

[0029] like Figure 3 , Figure 4As shown, both ends of the movable plate 5 are slidably connected with the interior of the containing box 3, the interior of the containing box 3 is filled with circulating water, the top and bottom side walls of the containing box 3 are installed with connecting water pipes, the top of the containing box 3 is installed with a sensor 301, and the top of both ends of the movable plate 5 is provided with an electric push rod 501, the top of the outer wall of the electric push rod 501 is fixedly connected with the top of the containing box 4, and the bottom protruding end of the electric push rod 501 is fixedly connected with the movable plate 5, and the electric push rod 501 is started to extend, so that the electric push rod 501 drives the bottom movable plate 5 to move toward the bottom, and then the movable plate 5 drives the electric heating rod 401 to move through the sealing connection block 502, so that the electric heating rod 401 moves from the containing box 4 to the bottom containing box 3, thereby releasing the contact between the outer wall of the electric heating rod 401 and the metal hydride inside the containing box 4, thereby effectively isolating the heating and the residual heat of the electric heating rod 401, and avoiding the continued heating of the metal hydride.

[0030] When in use, the hydrogen delivery device can be conveniently connected to the conduit 6 at one end of the containing box 3 away from the reaction tank 2, and the hydrogen can be conveniently delivered to the containing box 4 through the conduit 6. At the same time, the hydrogen can also be delivered to the reaction tank 2 through the conduit 6 at the other end, and the crude benzene is then delivered to the reaction tank 2 through the connecting pipe 201, and then it is hydrogenated and refined. When it is necessary to add hydrogen to the crude benzene inside the reaction tank 2, the electric control switch 601 of the conduit 6 is turned on, and the multiple electric heating rods 401 can be conveniently started to heat up, so that the electric heating rods 401 can heat the metal hydride inside the containing box 4. Through the multiple evenly distributed electric heating rods 401, the metal hydride can be conveniently heated evenly, and then the metal hydride will separate hydrogen from the alloy, and hydrogen can be evenly generated, which effectively maintains the efficiency of hydrogen separation. At the same time, because the electric heating rods 401 of the heating device are directly in contact with the metal hydride, the heat transfer steps are reduced, and heat loss can be effectively avoided.

[0031] At the same time, when it is necessary to stop heating or reduce the hydrogen generation efficiency, it is convenient to directly stop the heating of the electric heating rod 401 so that the heat source disappears, and the metal hydride in the storage box 4 is prevented from continuing to be heated. The electric push rod 501 can also be started to extend, so that the electric push rod 501 drives the bottom movable plate 5 to move toward the bottom end, and the movable plate 5 drives the electric heating rod 401 to move through the sealing connection block 502, so that the electric heating rod 401 moves from the storage box 4 to the bottom storage box 3, thereby releasing the contact between the outer wall of the electric heating rod 401 and the metal hydride inside the storage box 4, thereby effectively isolating the heating and the residual heat of the electric heating rod 401, avoiding the metal hydride from continuing to be heated, and being able to more effectively control the temperature. At the same time, when in use, the length of the electric heating rod 401 inserted into the storage box 4 can be effectively adjusted, thereby adjusting the contact area between the electric heating rod 401 and the metal hydride, thereby adjusting the hydrogen generation efficiency to meet different usage requirements.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crude benzene hydrorefining device, comprising a mounting plate (1), a reaction tank (2) and a containing box (3), characterized in that: The reaction tank (2) is arranged on one side of the top of the mounting plate (1); the containing box (3) is arranged on the side of the top of the mounting plate (1) away from the reaction tank (2); a containing box (4) is installed at the top of the containing box (3); guide tubes (6) are installed at both ends of the top of the containing box (3); and a movable plate (5) is installed at the bottom of the containing box (4); The top of the containing box (4) and the top of the containing box (3) are fitted and closed to each other, and the movable plates (5) at the tops of both ends of the containing box (4) penetrate the top of the containing box (3); A plurality of electric heating rods (401) are slidably connected inside the containing box (4), a sealing connection block (502) is provided at a position corresponding to the electric heating rods (401) at the top of the movable plate (5), and the bottom of the electric heating rods (401) and the sealing connection block (502) are fixed to each other.

2. A crude benzene hydrorefining device according to claim 1, characterized in that: A connecting pipe (201) is installed on the top of the reaction tank (2), and one side of the side wall of the reaction tank (2) is connected to the conduit (6). An electric control switch (601) is provided inside one end of the conduit (6) close to the top of the containing box (3).

3. A crude benzene hydrorefining device according to claim 1, characterized in that: The interior of the containing box (4) is in communication with the conduit (6); a through hole corresponding to the electric heating rod (401) is provided at the bottom of the interior of the containing box (4); and the interior of the containing box (4) is filled with a lanthanum-nickel alloy for hydrogen absorption and storage.

4. A crude benzene hydrorefining device according to claim 1, characterized in that: The interior of the electric heating rod (401) is filled with electric heating wires, and the interior of the sealing connection block (502) is provided with electric wires connected to the electric heating wires, and the diameter of the sealing connection block (502) is greater than the diameter of the electric heating rod (401).

5. A crude benzene hydrorefining device according to claim 1, characterized in that: The two ends of the movable plate (5) are slidably connected to the interior of the containing box (3); the interior of the containing box (3) is filled with circulating water; the top and bottom side walls of the containing box (3) are both provided with connecting water pipes; and the top of the containing box (3) is provided with a sensor (301).

6. A crude benzene hydrorefining device according to claim 1, characterized in that: Electric push rods (501) are provided at the top of both ends of the movable plate (5); the top of the outer wall of the electric push rod (501) is fixedly connected to the top of the accommodating box (4); and the bottom protruding end of the electric push rod (501) is fixedly connected to the movable plate (5).

Images