Simulation test coke oven for coking test

Abstract

The utility model relates to a simulation test coke oven for a coking test, which is characterized in that a dry quenching device, a coking test furnace and a coal box are arranged side by side, and a lifting device I, a lifting device II and a lifting device III are respectively arranged at the lower end of the coal box, the lower end of the coking test furnace and the lower end of the dry quenching device; the tractor carries the furnace door to transfer along the track, the coal box is placed on the furnace door, and the track penetrates through the dry quenching device, the coking test furnace and the lower end of the coal box; the first lifting device, the second lifting device and the third lifting device are all lead screw lifting mechanisms, and the lead screw lifting mechanisms are used for lifting or putting down the furnace door and the coal box. The coke oven has the advantages that the rails are arranged at the upper ends of the furnace door lifting devices, the furnace door tractor carries the furnace door to transfer along the rails, the coal box is placed on the furnace door, the rails penetrate through the lower ends of the dry quenching device, the coking test furnace and the coal box, manual moving and carrying are not needed, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a simulated test coke oven for coking experiments. Background Art

[0002] The test coke oven is used to simulate the carbonization chamber of a large-scale production coke oven. During the test, a certain amount of coal is taken and coked in the furnace of the test coke oven under corresponding conditions, and various indexes of the coked coal are studied. It can be used for comprehensive analysis of blended coal and single coal, summarize the correlation between the test coke oven and the production coke oven, provide guidance for coke oven production, and provide a basis for the rational use of coal resources and the improvement of coke quality.

[0003] At present, the bottom-loading test coke oven has the following defects:

[0004] 1) There is no furnace door tractor, and manual movement and handling are relied on, resulting in low test efficiency;

[0005] 2) The lifting of each position is achieved by manually operating the buttons beside the machine. The charging and discharging process is in a high-temperature environment, which poses a safety hazard;

[0006] 3) The method of manually inserting and removing the thermocouple is used to measure the temperature at the center of the coke cake. When the thermocouple hole is open, the temperature on the furnace top is high and the flue gas will escape, which poses a safety hazard;

[0007] 4) The heating method of the left and right furnace walls is adopted, and the temperature is uneven, which affects the test results. Summary of the Invention

[0008] The purpose of the utility model is to provide a simulated test coke oven for coking experiments, which solves the above defects, truly simulates the production coke oven, and improves the efficiency of the coal blending coking experiment.

[0009] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0010] A simulated test coke oven for coking experiments includes a coke dry quenching device, a coking test furnace, a coal box, a tractor, a lifting device I, a lifting device II, a lifting device III, a thermocouple lifting device, and a control unit. The coke dry quenching device, the coking test furnace, and the coal box are arranged side by side. The lifting device I, the lifting device II, and the lifting device III are respectively arranged at the lower ends of the coal box, the coking test furnace, and the coke dry quenching device;

[0011] Tracks are arranged at the upper ends of the lifting device I, the lifting device II, and the lifting device III. The tractor carries the furnace door and transports it along the tracks. The coal box is placed on the furnace door. The tracks penetrate through the lower ends of the coke dry quenching device, the coking test furnace, and the coal box;

[0012] The lifting device 1, the lifting device 2, and the lifting device 3 are all screw lifting mechanisms. The screw lifting mechanism is used to lift or lower the furnace door and the coal box, and the tractor is driven by a servo motor;

[0013] The thermocouple lifting device is arranged at the top of the coking test furnace, and the thermocouple lifting device is used to detect the temperature at the center of the coke cake;

[0014] The dry coke quenching device includes a dry coke quenching box and a nitrogen valve. The nitrogen valve is connected to the dry coke quenching box through a pipeline. The dry coke quenching box is provided with a dry coke quenching box door, and the dry coke quenching box door is driven by a motor 1;

[0015] The lifting device 1, the lifting device 2, the lifting device 3, the servo motor, and the motor 1 are respectively connected to the control unit.

[0016] The coking test furnace includes a carbonization chamber, and the carbonization chamber is made of silicon carbide bricks. Multiple groups of electric heaters are arranged at the bottom of the coking test furnace. A thermocouple is arranged inside the coking test furnace to detect the temperature of the coking test furnace. The multiple groups of electric heaters and the thermocouple are respectively connected to the control unit.

[0017] The multiple groups of electric heaters are silicon carbide rods.

[0018] The screw lifting mechanism includes a lifting support, a lifting screw, and a motor 2. The motor 2 is connected to the lifting screw through a coupling. A pulley is arranged on the lifting screw, and a lifting support is arranged on the pulley. The motor 2 is connected to the control unit.

[0019] A support column is arranged at the top end of the lifting support, a positioning hole is arranged at the bottom of the furnace door, and the top end of the support column is arranged inside the positioning hole.

[0020] The positioning hole is a tapered hole.

[0021] The control unit includes a main circuit, a PLC, and a control circuit. The main circuit includes a main circuit 1, a main circuit 2, and a main circuit 3. The input ends of the main circuit 1, the main circuit 2, and the main circuit 3 are all connected to the power supply. The main circuit 1 includes a servo driver, and the output end of the servo driver is connected to the servo motor. The main circuit 3 includes multiple groups of voltage regulating modules. The input end of each group of voltage regulating modules is connected to the main contact of a contactor 1, and the output end of each group of voltage regulating modules is connected to the corresponding electric heater;

[0022] The main circuit 2 includes multiple groups of main circuit branches. The structure of each group of main circuit branches is the same and all includes a forward rotation contactor and a reverse rotation contactor. The main contact of the forward rotation contactor is connected between the output end and the power supply to form a forward rotation connection mode, and the main contact of the reverse rotation contactor is connected between the output end and the power supply to form a reverse rotation connection mode; The output end of the main circuit a is connected to the motor 2 of the lifting device 1, the output end of the main circuit b is connected to the motor 2 of the lifting device 2, and the output end of the main circuit c is connected to the motor 2 of the lifting device 3;

[0023] The main circuit one and the main circuit two are respectively connected to the PLC, and the main circuit three is connected to the control circuit;

[0024] The PLC includes a digital quantity output module, and the digital quantity output module is respectively connected to a relay group. The normally open contacts of the relay group are respectively connected to the coil of the forward rotation contactor, the coil of the reverse rotation contactor, the nitrogen valve, the servo driver, and the voltage regulating module.

[0025] The PLC also includes a power supply module, a CPU module, and a touch screen. The CPU module, the touch screen, and the digital quantity output module are connected through ports. The power supply module is used to provide the working power supply.

[0026] The control circuit includes the coil of the contactor one, and the normally open auxiliary contact of the forward rotation contactor is connected in series with the coil of the contactor one.

[0027] Compared with the prior art, the beneficial effects of the present utility model are:

[0028] 1. Rails are provided at the upper ends of the furnace door lifting device (initial position), the furnace door lifting device (coking position), and the furnace door lifting device (quenching position). The furnace door carrier transports the furnace door along the rails, and the coal box is placed on the furnace door. The rails penetrate through the lower ends of the dry quenching device, the coking test furnace, and the coal box, eliminating the need for manual movement and handling, and improving the test efficiency;

[0029] 2. The furnace door lifting device (initial position), the furnace door lifting device (coking position), and the furnace door lifting device (quenching position) are all screw lifting mechanisms. The screw lifting mechanism is used to lift or lower the furnace door and the coal box, with a simple structure, convenient operation, easy maintenance, and cost savings;

[0030] 3. The thermocouple lifting device is used to replace manual operation for inserting and removing the thermocouple at the center of the coke cake, reducing the labor intensity of the operators and improving the operation safety;

[0031] 4. Multiple groups of electric heaters are provided at the bottom of the coking test furnace, improving the temperature uniformity of the test furnace;

[0032] 5. Maintenance personnel can view the operation status of the equipment through the touch screen at any time, saving time and effort in maintenance;

[0033] 6. Operation buttons are provided on the touch screen in the operation room, and the operators can start and stop the equipment through the touch screen at any time, improving the operation safety;

[0034] 7. The digital quantity output module is respectively connected to the coil of the forward rotation contactor, the coil of the reverse rotation contactor, the nitrogen valve, the servo driver, and the voltage regulating module equipment through the relay group, preventing damage to the equipment and burning out the digital quantity output module. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the simulated test coke oven.

[0036] Figure 2 It is a schematic diagram of the main circuit principle of the simulated test coke oven.

[0037] Figure 3 It is a schematic diagram of the principle of the control circuit of the simulated test coke oven Figure 1 .

[0038] Figure 4 It is a schematic diagram of the principle of the control circuit of the simulated test coke oven Figure 2 .

[0039] Figure 5 It is a schematic diagram of the connection of the relay group in the control circuit of the simulated test coke oven Figure 1 .

[0040] Figure 6 It is a schematic diagram of the connection of the relay group in the control circuit of the simulated test coke oven Figure 1 .

[0041] In the figure: 1 - furnace door tractor; 2 - furnace door; 3 - coal box; 4 - furnace door lifting device (initial position); 5 - furnace door lifting device (coking position); 6 - furnace door lifting device (coke quenching position); 7 - coking test furnace; 8 - coke cake center thermocouple lifting device; 9 - raw gas combustion emission device; 10 - dry coke quenching box; 11 - dry coke quenching box door; 12 - nitrogen pipeline; 13 - waste gas outlet; 14 - exhaust system; 101 - support column; 102 - track; 103 - lifting bracket; 104 - lifting motor. Detailed implementation manners

[0042] The present utility model will be described in detail below with reference to the accompanying drawings of the specification, but it should be noted that the implementation of the present utility model is not limited to the following embodiments.

[0043] The following embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation procedures are given, but the protection scope of the present utility model is not limited to the following embodiments. The methods used in the following embodiments are all conventional methods unless otherwise specified.

[0044] A simulated test coke oven for coking tests, see Figure 1, including a coke dry quenching device, a coking test furnace, a coal box 3, a furnace door tractor 1, a furnace door lifting device (initial position) 4, a furnace door lifting device (coking position) 5, a furnace door lifting device (quenching position) 6, a coke cake center thermocouple lifting device 8, a main circuit, and a control circuit. Coal is contained in the coal box 3. The coke dry quenching device, the coking test furnace, and the coal box 3 are arranged side by side. The furnace door lifting device (initial position) 4, the furnace door lifting device (coking position) 5, and the furnace door lifting device (quenching position) 6 are respectively arranged at the lower end of the coal box 3, the lower end of the coking test furnace, and the lower end of the coke dry quenching device. At the upper ends of the furnace door lifting device (initial position) 4, the furnace door lifting device (coking position) 5, and the furnace door lifting device (quenching position) 6, there are tracks 102. The furnace door tractor 1 carries the furnace door and transports it along the tracks 102. The coal box 3 is placed on the furnace door. The tracks 102 penetrate through the lower ends of the coke dry quenching device, the coking test furnace, and the coal box 3. The furnace door lifting device (initial position) 4, the furnace door lifting device (coking position) 5, and the furnace door lifting device (quenching position) 6 are all screw-lifting mechanisms. The screw-lifting mechanism is used to lift or lower the furnace door 2 and the coal box 3. The screw-lifting mechanism includes a lifting bracket, a lifting screw, and a lifting motor 104. The lifting motor 104 is connected to the lifting screw through a coupling. The lifting screw is arranged on the column of the lifting bracket. A pulley is arranged on the lifting screw, and a lifting bracket is arranged on the pulley. At the top of the lifting bracket, there are four support columns 101. A positioning hole is arranged at the bottom of the furnace door. The top of the support column 101 is arranged in the positioning hole, and the positioning hole is a tapered hole. The furnace door tractor 1 is driven by a servo motor. The furnace door tractor 1 is a gear-rack transmission mechanism. The furnace door 2 and the coal box 3 are placed on the furnace door tractor 1. The coke cake center thermocouple lifting device 8 is arranged at the top of the coking test furnace. The coke cake center thermocouple lifting device 8 is used to detect the temperature at the center of the coke cake. The coke cake center thermocouple lifting device 8 adopts the one with the publication number CN 214096393U and the patent name of a thermocouple automatic lifting device, or other models can also be used. The coke dry quenching device includes a coke dry quenching box 10 and a nitrogen valve. The nitrogen valve is connected to the coke dry quenching box 10 through a pipeline. The coke dry quenching box 10 is provided with a coke dry quenching box door 11, and the coke dry quenching box door 11 is driven by a motor 1. The coking test furnace includes a carbonization chamber, and the carbonization chamber is made of silicon carbide bricks. There are 12 electric heaters at the bottom of the coking test furnace, and the 12 electric heaters are silicon carbide rods. A thermocouple is arranged inside the coking test furnace to detect the temperature of the coking test furnace.

[0045] The furnace door lifting device (initial position) 4, the furnace door lifting device (coking position) 5, the furnace door lifting device (quenching position) 6, the servo motor, the motor 1, multiple groups of electric heaters, the thermocouple, and the lifting motor 104 are respectively connected to the control unit. The control unit includes a main circuit and a PLC, see Figure 2, the main circuit includes Main Circuit 1, Main Circuit 2, and Main Circuit 3. The input terminals of Main Circuit 1, Main Circuit 2, and Main Circuit 3 are all connected to the power supply. Main Circuit 1 includes a servo driver, and the servo driver uses Inovance IS620FT5R4I, or other models can also be used. The output terminal of the servo driver is connected to the servo motor. Main Circuit 3 includes multiple voltage regulating modules, and the multiple voltage regulating modules use Longke LSA-H3P200YB, or other models can also be used. The output terminal of each voltage regulating module is connected to the corresponding electric heater; Main Circuit 2 includes multiple main circuit branches, and the structure of each main circuit branch is the same, and each includes a forward contactor KM1 and a reverse contactor KM2. The main contacts of the forward contactor KM1 are connected between the output terminal and the AC power supply to form a forward connection mode, and the main contacts of the reverse contactor KM2 are connected between the output terminal and the AC power supply to form a reverse connection mode; the output terminal of Main Circuit a is connected to the motor of the furnace door lifting device (initial position) 4, the output terminal of Main Circuit b is connected to the motor of the furnace door lifting device (coking position) 5, and the output terminal of Main Circuit c is connected to the motor of the furnace door lifting device (quenching position) 6; the main circuit is connected to the PLC. See Figures 3 - 6 , the PLC includes a power supply module, a CPU module, a touch screen, and a digital quantity output module. The CPU module, the touch screen, and the digital quantity output module are connected through ports. The power supply module is used to provide the working power supply. The digital quantity output module is respectively connected to the forward contactor KM1, the reverse contactor KM2, the servo driver, and the voltage regulating module.

[0046] Working process:

[0047] The operator places the coal box 3 on the furnace door 2, and the furnace door tractor 1 transports the furnace door 2 and the coal box 3 to the bottom of the coking test furnace 7; the furnace door lifting device (coking position) 5 lifts the furnace door 2 and the coal box 3 into the coking test furnace 7, and the coke cake center thermocouple lifting device 8 inserts the thermocouple into the coal box 3, and the coking test furnace 7 is heated for coking; the raw gas generated during the coking process is heated and discharged by the raw gas combustion and discharge device 9 and led to the exhaust system 14; place the second furnace door 2 to the initial position, the furnace door tractor 1 transports the second furnace door to the furnace door lifting device (coking position) 5, and the furnace door lifting device (coking position) 5 lifts the furnace door to seal the carbonization chamber, avoiding the carbonization chamber being in an open state during the coke quenching process, and the rapid cooling and heating affecting the service life of the coking test furnace, and the furnace door lifting device (initial position) 4 lifts the furnace door 2 to a certain height; after coking is completed, the furnace door tractor 1 drives to the bottom of the coking test furnace 7, and the coke cake center thermocouple lifting device 8 rises to pull out the thermocouple from the coal box 3; the furnace door lifting device (coking position) 5 descends to lower the furnace door 2 and the coal box 3 onto the furnace door tractor 1; the furnace door tractor 1 transports the furnace door 2 and the coal box 3 into the dry coke quenching box 10, and the furnace door lifting device (coke quenching position) 6 rises to lift the furnace door 2 and the coal box 3 and disconnects from the furnace door tractor 1, and the furnace door tractor 1 returns to the initial position; the dry coke quenching box door 11 descends, and the nitrogen for coke quenching is automatically introduced into the dry coke quenching box 10 through the nitrogen pipeline 12 controlled by the electric valve for coke quenching, and the generated waste gas is discharged from the waste gas outlet 13, and the waste gas outlet 13 is connected to the integrated exhaust system 14; the furnace door lifting device (initial position) 4 descends to lower the furnace door 2 onto the tractor 1, the tractor 1 drives to the bottom of the coking test furnace 7, and the furnace door lifting device (coking position) 5 rises to send the furnace door 2 into the coking test furnace 7 for heat preservation; when the temperature drops to the coal charging temperature and coal charging for coking is required, the heat preservation furnace door 2 in the coking test furnace 7 returns to the initial coal charging position, and repeating the operation steps 1 and 2 can continuously coke; after the furnace door 2 and the coal box 3 in the dry coke quenching box 10 are coke quenched, the dry coke quenching box door 11 automatically rises, and the tractor 1 automatically drives to the dry coke quenching box. The furnace door lifting device (coke quenching position) 6 descends, the furnace door 2 and the coal box 3 fall on the furnace door tractor 1, and the furnace door tractor 1 automatically returns to the initial position, and the entire coking test ends.

[0048] The upper ends of the furnace door lifting device (initial position), furnace door lifting device (coking position), and furnace door lifting device (coke quenching position) of the present utility model are provided with tracks. The furnace door carrier transports the furnace door along the tracks. The coal box is placed on the furnace door. The tracks penetrate through the lower ends of the dry coke quenching device, coking test furnace, and coal box, eliminating the need for manual movement and handling, and improving the test efficiency. The furnace door lifting device (initial position), furnace door lifting device (coking position), and furnace door lifting device (coke quenching position) are all screw lifting mechanisms. The screw lifting mechanism is used to lift or lower the furnace door and coal box, with a simple structure, convenient operation, easy maintenance, and cost savings. The thermocouple lifting device is used to replace manual labor to insert and remove the thermocouple at the center of the coke cake, reducing the labor intensity of the operators and improving the operation safety. Multiple groups of electric heaters are installed at the bottom of the coking test furnace, improving the temperature uniformity of the test furnace.

[0049] 5. Maintenance personnel can view the operating status of the equipment through the touch screen at any time, saving time and effort in maintenance. Operation buttons are set on the touch screen in the operation room. Operators can start and stop the equipment through the touch screen at any time, improving operation safety. The digital quantity output module is respectively connected to the coils of the forward rotation contactor, reverse rotation contactor, nitrogen valve, servo driver, and voltage regulating module equipment through relay groups to prevent damage to the digital quantity output module due to equipment burnout.

Claims

1. A simulated test coke oven for coking test, characterized in that: It comprises a dry coke quenching device, a coking test furnace, a coal box, a tractor, a lifting device 1, a lifting device 2, a lifting device 3, a thermocouple lifting device, and a control unit. The dry coke quenching device, the coking test furnace, and the coal box are arranged side by side. The lifting device 1, the lifting device 2, and the lifting device 3 are respectively arranged at the lower end of the coal box, the lower end of the coking test furnace, and the lower end of the dry coke quenching device; Tracks are arranged at the upper ends of the lifting device 1, lifting device 2 and lifting device 3. The tractor carries the furnace door and is transported along the tracks. The coal box is placed on the furnace door. The tracks pass through the lower ends of the dry coke quenching device, the coking test furnace and the coal box. Lifting device 1, lifting device 2 and lifting device 3 are all screw lifting mechanisms, which are used to lift or lower the furnace door and coal box, and the traction vehicle is driven by a servo motor; The thermocouple lifting device is arranged on the top of the coking test furnace, and is used to detect the center temperature of the coke cake; The dry coke quenching device comprises a dry coke quenching box and a nitrogen valve, the nitrogen valve is connected to the dry coke quenching box through a pipeline, the dry coke quenching box is provided with a dry coke quenching box door, and the dry coke quenching box door is driven by a motor 1; The lifting device 1, the lifting device 2, the lifting device 3, the servo motor and the motor 1 are respectively connected to the control unit.

2. The simulated test coke oven for coking test according to claim 1, characterized in that: The coking test furnace comprises a carbonization chamber which is made of silicon carbide bricks. A plurality of electric heaters are arranged at the bottom of the coking test furnace. Thermocouples are arranged in the coking test furnace to detect the temperature of the coking test furnace. The plurality of electric heaters and thermocouples are respectively connected to the control unit.

3. The simulated test coke oven for coking test according to claim 2, characterized in that: The multiple groups of electric heaters are silicon carbon rods.

4. The simulated test coke oven for coking test according to claim 1, characterized in that: The screw lifting mechanism comprises a lifting bracket, a lifting screw, and a second motor. The second motor is connected to the lifting screw through a coupling. A pulley is arranged on the lifting screw, and a lifting bracket is arranged on the pulley. The second motor is connected to a control unit.

5. The simulated test coke oven for coking test according to claim 4, characterized in that: The top end of the lifting bracket is provided with a supporting column, the bottom of the furnace door is provided with a positioning hole, and the top end of the supporting column is arranged in the positioning hole.

6. The simulated test coke oven for coking test according to claim 5, characterized in that: The positioning hole is a tapered hole.

7. The simulated test coke oven for coking test according to claim 1, characterized in that: The control unit includes a main circuit, a PLC, and a control circuit. The main circuit includes a main circuit 1, a main circuit 2, and a main circuit 3. The input ends of the main circuit 1, the main circuit 2, and the main circuit 3 are all connected to a power supply. The main circuit 1 includes a servo driver. The output end of the servo driver is connected to a servo motor. The main circuit 3 includes multiple groups of voltage regulating modules. The input end of each group of voltage regulating modules is connected to the main contact of the contactor 1, and the output end of each group of voltage regulating modules is connected to a corresponding electric heater. The main circuit 2 includes multiple groups of main circuit branches, each group of main circuit branches has the same structure, including a forward contactor and a reverse contactor, the main contact of the forward contactor is connected between the output end and the power supply to form a forward connection mode, and the main contact of the reverse contactor is connected between the output end and the power supply to form a reverse connection mode; the output end of the main circuit a is connected to the motor 2 of the lifting device 1, the output end of the main circuit b is connected to the motor 2 of the lifting device 2, and the output end of the main circuit c is connected to the motor 2 of the lifting device 3; Main loop 1 and main loop 2 are connected to PLC respectively, and main loop 3 is connected to the control loop.

8. The simulated test coke oven for coking test according to claim 7, characterized in that: The PLC comprises a digital quantity output module, which is respectively connected to a relay group, and the normally open contacts of the relay group are respectively connected to a coil of a forward contactor, a coil of a reverse contactor, a nitrogen valve, a servo driver and a voltage regulating module.

9. The simulated test coke oven for coking test according to claim 7, characterized in that: The PLC also includes a power module, a CPU module, and a touch screen. The CPU module, the touch screen, and the digital output module are connected through ports, and the power module is used to provide working power.

10. The simulated test coke oven for coking test according to claim 7, characterized in that: The control circuit comprises a coil of contactor 1, and a normally open auxiliary contact of the forward contactor is connected in series with the coil of contactor 1.

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