Coke-oven gas reforming hydrogen production device

Abstract

The utility model discloses a coke-oven gas reforming hydrogen production device, which relates to the field of gas hydrogen production, solves the problems of poor heating efficiency and low practicability of the existing hot blast stove type heating, and adopts the following scheme that the coke-oven gas reforming hydrogen production device comprises an electric arc heating seat, and a gas inlet pipe is fixedly connected to the bottom of the left side of the electric arc heating seat; the top of the right side of the arc heating seat is fixedly connected with an exhaust pipe; the two ends of the electric arc heating base are fixedly sleeved with water-cooling copper sleeves, and electrode bars are slidably sleeved with the water-cooling copper sleeves. Two groups of electrode bars which are opposite in position are arranged on the inner side of the electric arc heating seat, and an electric arc column is assembled between the two groups of electrode bars; according to the coke-oven gas reforming hydrogen production device, through the arrangement of the arc heating seat and components on the inner side of the arc heating seat, gas flowing through the outer side of the arc heating seat can be stably heated by utilizing the arc column between the two groups of electrode bars, and the gas is ensured to be at a corresponding temperature, so that the integration of coke oven gas plasma heating, organic hydrocarbon cracking and steam reforming is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gas hydrogen production, in particular to a coke oven gas reforming hydrogen production device. Background Art

[0002] Coke oven gas contains a large amount of hydrogen, small molecular organic hydrocarbons, and some CO, CO2, N2, etc. It is a hydrogen-rich gas that can be used as a raw material for the production of industrial hydrogen and has great economic value. After the coke oven gas is heated, the small molecular organic hydrocarbons are cracked to further generate hydrogen; at the same time, the use of steam reforming technology can further increase the hydrogen yield;

[0003] After searching, the application with patent application number CN202021036646.2 discloses a coke oven tail gas hydrogen production device, including a coke oven tail gas storage tank, a raw gas compressor, a first TSA adsorption pretreatment tower, a first PSA adsorption unit, a pressurizing unit, a medium-transformation gas liquid separator, a decarbonization drying unit and a hydrogen storage tank, wherein the output end of the coke oven tail gas storage tank is connected to the input end of the raw gas compressor, the output end of the raw gas compressor is connected to the input end of the first TSA adsorption pretreatment tower, the output end of the first TSA adsorption pretreatment tower is connected to the input end of the second TSA adsorption pretreatment tower, the output end of the second TSA adsorption pretreatment tower is respectively connected to the input ends of the first PSA adsorption unit and the second PSA adsorption unit, and the output ends of the first PSA adsorption unit and the second PSA adsorption unit are respectively connected to the pressurizing unit;

[0004] The above application document realizes the production of hydrogen by setting up a hot blast furnace, but the existing hot blast furnace type production as the main means of hydrogen production has limited efficiency and high overall energy consumption.

[0005] Therefore, we proposed a coke oven gas reforming hydrogen production device. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a coke oven gas reforming hydrogen production device, which solves the problem of poor heating efficiency and low practicality of the existing hot blast furnace type.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a coke oven gas reforming hydrogen production device, comprising an arc heating seat, the bottom of the left side of the arc heating seat is fixedly connected to an air inlet pipe, and the top of the right side of the arc heating seat is fixedly connected to an exhaust pipe;

[0008] The two ends of the arc heating seat are fixedly sleeved with water-cooled copper sleeves, and the water-cooled copper sleeves are slidably sleeved with electrode rods;

[0009] Two groups of electrode rods are arranged opposite to each other on the inner side of the arc heating seat, and an arc column is installed between the two groups of electrode rods.

[0010] Preferably, three groups of side columns in opposite positions are fixedly mounted on the outer wall of the electrode rod, and column grooves matching the specifications of the three groups of side columns are opened on the inner side of the water-cooling copper sleeve;

[0011] Among them, the setting of the side column and the column groove can increase the contact area thereof, thereby ensuring the cooling effect of the water-cooled copper sleeve on the electrode rod.

[0012] Preferably, a ring plate is fixedly mounted on the outer wall of the electrode rod, and a plate groove is provided between the ring plate and the side wall of the electrode rod;

[0013] Preferably, a push plate is provided on the outer wall of the electrode rod, and the push plate is clamped in the plate groove;

[0014] Among them, the arrangement of the plate groove and the push plate facilitates driving the electrode rod to move left and right, thereby completing the electrode pushing.

[0015] Preferably, the bottom end of the push plate is fixedly connected with an electric telescopic rod, and the electric telescopic rod is fixedly mounted on the outer side wall of the arc heating seat;

[0016] The electric telescopic rod is used as a driving source to drive the electrode rod to move horizontally through the push plate.

[0017] Preferably, a water tank cavity is provided inside the water-cooling copper sleeve, and a water inlet pipe and a drain pipe are fixedly connected to the top of the water-cooling copper sleeve;

[0018] Among them, the setting of the water-cooled copper sleeve can effectively cool the electrode rod slidably mounted inside the water-cooled copper sleeve.

[0019] Preferably, the arc heating seat is tilted 15 degrees to the right as a whole, a slag discharge port is provided at the bottom of the right side of the arc heating seat, and a plastic head can be installed inside the slag discharge port;

[0020] Among them, the inclined setting of the arc heating seat can make the waste slag inside it automatically slide to the slag discharge port below, and then automatically discharged, so as to achieve the effect of automatic slag discharge.

[0021] Preferably, an electromagnetic coil in a ring shape and located around the arc column is fixedly mounted in the side wall of the arc heating seat.

[0022] The utility model provides a coke oven gas reforming hydrogen production device, which has the following beneficial effects:

[0023] 1. The coke oven gas reforming hydrogen production device, through the arrangement of the arc heating seat and the components inside it, can use the arc column between the two sets of electrode rods to stably heat the gas flowing through the outside thereof, ensuring that it is at a corresponding temperature, thereby realizing the integration of coke oven gas plasma heating, organic hydrocarbon cracking, and steam reforming. The overall equipment is small in size, saves floor space, saves auxiliary equipment, and solves the problem of poor efficiency and low practicality of existing hot blast furnace heating;

[0024] 2. The coke oven gas reforming hydrogen production device can slide the electrode rod inside the water-cooled copper sleeve by setting the shape of the electrode rod, and the electric telescopic rod can be adjusted to drive the electrode rod to move left and right according to the needs, so that the electrode can be intermittently advanced according to the burn-off amount during operation to meet the requirements of long-term continuous operation;

[0025] 3. The coke oven gas reforming hydrogen production device can effectively cool the electrode rods through the provision of a water-cooled copper sleeve, thereby increasing work efficiency and safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the arc column of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the electrode rod of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the external heating seat of the utility model.

[0030] In the figure: 1. Arc heating seat; 2. Electrode rod; 3. Arc column; 4. Electric telescopic rod; 5. Push plate; 6. Water-cooled copper sleeve; 7. Air inlet pipe; 8. Exhaust pipe; 9. Slag discharge port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1:

[0033] A coke oven gas reforming hydrogen production device comprises an arc heating seat 1, an air inlet pipe 7 is fixedly connected to the bottom of the left side of the arc heating seat 1, and an exhaust pipe 8 is fixedly connected to the top of the right side of the arc heating seat 1; both ends of the arc heating seat 1 are fixedly sleeved with water-cooled copper sleeves 6, and an electrode rod 2 is slidably sleeved in the water-cooled copper sleeves 6; two groups of electrode rods 2 are arranged on the inner side of the arc heating seat 1, and an arc column 3 is installed between the two groups of electrode rods 2;

[0034] Among them, the coke oven gas reforming hydrogen production device, through the arrangement of the arc heating seat 1 and the components inside it, can use the arc column 3 between the two groups of electrode rods 2 to stably heat the coal gas flowing through the outside thereof to ensure that it is at a corresponding temperature, thereby realizing the integration of coke oven gas plasma heating, organic hydrocarbon cracking, and steam reforming. The overall equipment is small in size, saves floor space, saves auxiliary equipment, and solves the problem of poor efficiency and low practicality of existing hot blast furnace heating.

[0035] In addition, the main parameters of the arc heating chamber are:

[0036] 1. Medium: coke oven gas + water vapor;

[0037] 2. Design flow rate: 2000Nm3 / h;

[0038] 3. Design pressure: positive pressure, 15kPa;

[0039] 4. Long-term operating temperature: 1400℃;

[0040] 5. Maximum tolerance temperature: 1600℃;

[0041] 6. Layout: horizontal or vertical;

[0042] 7. Arc DC power: 900kW, 1.8kA / 500V.

[0043] Embodiment 2:

[0044] Three sets of side columns in opposite positions are fixedly installed on the outer wall of the electrode rod 2, and column grooves matching the specifications of the three sets of side columns are opened on the inner side of the water-cooled copper sleeve 6; wherein, the setting of the side columns and the column grooves can increase their contact area, thereby ensuring the cooling effect of the water-cooled copper sleeve 6 on the electrode rod 2.

[0045] A ring plate is fixedly mounted on the outer wall of the electrode rod 2, and a plate groove is provided between the ring plate and the side wall of the electrode rod 2; preferably, a push plate 5 is provided on the outer wall of the electrode rod 2, and the push plate 5 is clamped in the plate groove; wherein, the arrangement of the plate groove and the push plate 5 facilitates driving the electrode rod 2 to move left and right, thereby completing the electrode pushing.

[0046] In addition, the coke oven gas reforming hydrogen production device can slide the electrode rod 2 onto the inner side of the water-cooled copper sleeve 6 through the shape of the electrode rod 2, and the electric telescopic rod 4 can be adjusted to drive the electrode rod 2 to move left and right as needed, so that the electrode can be intermittently advanced according to the burn-off amount during operation to meet the requirements of long-term continuous operation.

[0047] Embodiment 3:

[0048] The bottom end of the push plate 5 is fixedly connected to an electric telescopic rod 4, and the electric telescopic rod 4 is fixedly installed on the outer wall of the arc heating seat 1; wherein the electric telescopic rod 4 serves as a driving source to drive the electrode rod 2 to move horizontally through the push plate 5.

[0049] A water tank cavity is arranged inside the water-cooled copper sleeve 6, and a water inlet pipe and a water outlet pipe are fixedly connected to the top of the water-cooled copper sleeve 6; wherein, the arrangement of the water-cooled copper sleeve 6 can efficiently cool the electrode rod 2 slidably mounted inside the water-cooled copper sleeve.

[0050] It should be further added that the cooling water system mainly provides circulating water for electrode cooling to maintain a lower temperature of the tail electrode. At the same time, it cools the electrode clamps, high-temperature water-cooled slag unloading valves and other water-cooled equipment. The cooling water system takes water from the water supply main pipe of the plant circulating water system and returns it to the return water main pipe.

[0051] The cooling water system mainly includes related pipes and accessories.

[0052] Main parameters of circulating water:

[0053] 1. Flow rate: 4t / h;

[0054] 2. Water quality requirements: temperature <40°C, silicon content <10μg / L, conductivity <10μS / cm;

[0055] 3. Water supply pressure: >4bar;

[0056] 4. Return water pressure: <2bar.

[0057] The arc heating seat 1 is tilted 15 degrees to the right as a whole. A slag discharge port 9 is provided at the bottom of the right side of the arc heating seat 1, and a plastic head can be installed on the inner side of the slag discharge port 9. The inclined setting of the arc heating seat 1 can enable the waste slag inside to automatically slide to the slag discharge port 9 below, and then be automatically discharged, thereby achieving the effect of automatic slag discharge.

[0058] An electromagnetic coil in a ring shape and located on the peripheral side of the arc column 3 is fixedly mounted in the side wall of the arc heating seat 1 .

[0059] The coke oven gas reforming hydrogen production device can effectively cool the electrode rod 2 by providing the water-cooled copper sleeve 6, thereby increasing the working efficiency and the use safety.

[0060] In addition, it should be noted that the device is equipped with an external power supply and control system, which mainly provides power and control for the entire system, collects the operating information of all devices, monitors the signals of all sensors and signal devices, and provides automatic control or computer screen control; the power supply and control system includes an isolation transformer cabinet, a DC power supply cabinet, an electrode push control cabinet and a centralized control cabinet.

[0061] The working principle and use process of the utility model are as follows: when the device is working, the slag discharge port 9 is blocked, and the gas is input into the inner side of the arc heating seat 1 from the air inlet pipe 7 on the bottom side, and then the arc column 3 is energized by using two groups of electrode rods 2 to heat the coal gas flowing through it, and then the heated gas is output from the exhaust pipe 8, and then the electric telescopic rod 4 is opened to drive the left and right groups of electrode rods 2 to move horizontally through the push plate 5, completing the electrode advancement process to ensure the hydrogen production effect.

[0062] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coke oven gas reforming hydrogen production device, characterized in that: It comprises an arc heating seat (1), wherein the bottom of the left side of the arc heating seat (1) is fixedly connected to an air inlet pipe (7), and the top of the right side of the arc heating seat (1) is fixedly connected to an exhaust pipe (8); Both ends of the arc heating seat (1) are fixedly sleeved with water-cooled copper sleeves (6), and an electrode rod (2) is slidably sleeved in the water-cooled copper sleeves (6); Two groups of electrode rods (2) located opposite to each other are arranged inside the arc heating seat (1), and an arc column (3) is installed between the two groups of electrode rods (2).

2. A coke oven gas reforming hydrogen production device according to claim 1, characterized in that: Three groups of side columns in opposite positions are fixedly mounted on the outer wall of the electrode rod (2), and column grooves matching the specifications of the three groups of side columns are provided on the inner side of the water-cooling copper sleeve (6).

3. A coke oven gas reforming hydrogen production device according to claim 1, characterized in that: A ring plate is fixedly mounted on the outer wall of the electrode rod (2), and a plate groove is provided between the ring plate and the side wall of the electrode rod (2).

4. A coke oven gas reforming hydrogen production device according to claim 1, characterized in that: A push plate (5) is provided on the outer wall of the electrode rod (2), and the push plate (5) is clamped in the plate groove.

5. A coke oven gas reforming hydrogen production device according to claim 4, characterized in that: The bottom end of the push plate (5) is fixedly connected to an electric telescopic rod (4), and the electric telescopic rod (4) is fixedly mounted on the outer side wall of the electric arc heating seat (1).

6. The coke oven gas reforming hydrogen production device according to claim 1, characterized in that: A water tank cavity is provided on the inner side of the water-cooling copper sleeve (6), and a water inlet pipe and a water outlet pipe are fixedly connected to the top of the water-cooling copper sleeve (6).

7. The coke oven gas reforming hydrogen production device according to claim 1, characterized in that: The arc heating seat (1) is tilted 15 degrees to the right as a whole. A slag discharge port (9) is provided at the bottom of the right side of the arc heating seat (1), and a plastic sealing head can be installed inside the slag discharge port (9).

8. The coke oven gas reforming hydrogen production device according to claim 1, characterized in that: An electromagnetic coil in a ring shape and located on the circumference of the arc column (3) is fixedly mounted in the side wall of the arc heating seat (1).

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