Zero-carbon roasting equipment for carbon products

Abstract

The utility model provides carbon product zero-carbon roasting equipment, which comprises at least one closed furnace body and a plurality of vertical heat-resistant conductive saggars which are arranged in each closed furnace body and are connected in series, all the heat-resistant conductive saggars are powered by a power supply system, and a gas collecting hood is arranged on each closed furnace body. And all the gas collecting hoods are connected with a gas treatment device through a flue gas pipe. According to the zero-carbon roasting equipment for the carbon products, the power supply is used for roasting, and the parallel loop and the series loop are matched according to the matching of the output power of the power supply system and the load power, so that the load is relatively balanced, the operation is stable, and generated volatile matter gas is directly collected and treated.

Description

Technical Field

[0001] The utility model relates to the field of carbon product roasting equipment, in particular to a carbon product zero-carbon roasting equipment. Background Art

[0002] As the proportion of renewable energy such as wind power, photovoltaics, and hydropower increases, industrial production expands its use. Carbon products are produced in four major processes: molding, roasting, graphitization, and machining. The mainstream equipment for the roasting process is a covered ring roasting furnace, an uncovered long strip ring roasting furnace, a car bottom roasting furnace, and a tunnel roasting furnace. Although the structures of these roasting furnaces are different, they all use fuel gas combustion as a heat source for roasting. Not only is the carbon dioxide emission large, but carbon products also emit volatile gases accounting for 7% of their mass during the roasting process. Not only is the energy consumption high, but it also increases the difficulty of environmental protection management, and the waste gas that meets the standards must be discharged at high altitude through the chimney. Utility Model Content

[0003] In order to solve the problem that the carbon product roasting equipment in the prior art uses fuel gas as a heat source for roasting with low energy consumption and environmental pollution, the utility model proposes a carbon product zero-carbon roasting equipment.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A zero-carbon roasting device for carbon products comprises: at least one closed furnace body and a plurality of vertical heat-resistant conductive saggers connected in series installed in each closed furnace body, all the heat-resistant conductive saggers are powered by a power supply system, a gas collecting hood is installed on each closed furnace body, and all the gas collecting hoods are connected to a gas treatment device through a smoke pipe.

[0006] Preferably, the power supply system includes a furnace transformer with a voltage regulating device, a positive busbar, a negative busbar and a high-current switch, the furnace transformer is connected to the positive busbar and the negative busbar, respectively, the positive busbar and the negative busbar are electrically connected to the first heat-resistant conductive sagger and the tail heat-resistant conductive sagger in each closed furnace body, respectively, and a high-current switch is installed at the connection.

[0007] Preferably, all the heat-resistant conductive saggers in each closed furnace body are connected in series head to tail, and one heat-resistant conductive sagger is connected to the next heat-resistant conductive sagger via a heat-resistant conductive pipe.

[0008] Preferably, the gas processing device includes an electric tar precipitator, a steam turbine generator set and a methanol reaction tower, a three-way valve is installed on the flue gas pipe, the electric tar precipitator is connected to one end of the three-way valve, the steam turbine generator set is connected to the outlet of the electric tar precipitator, the methanol reaction tower is connected to the outlet of the steam turbine generator set, and the other end of the three-way valve is connected to the nitrogen input pipe.

[0009] Preferably, the heat-resistant conductive sagger and the heat-resistant conductive tube are made of the same conductive material.

[0010] Preferably, both the heat-resistant and electrically conductive crucible and the heat-resistant and electrically conductive tube are made of steel material.

[0011] Preferably, eight heat-resistant and electrically conductive tubes are connected between one heat-resistant and electrically conductive crucible and the next one.

[0012] Preferably, the closed furnace body includes four.

[0013] The beneficial effects of the present utility model are as follows: For the zero-carbon roasting equipment for carbon products of the present utility model, electric energy is consumed to heat the heat-resistant and electrically conductive crucible, and the heat-resistant and electrically conductive crucible uniformly generates heat to slowly heat the carbon products and the filling materials therein at a low power. During this period, the volatile gas discharged is directly collected and treated without the dilution treatment of combustion exhaust gas, and the treatment difficulty is simple and it can be recycled. Each closed furnace body contains a series circuit formed by several heat-resistant and electrically conductive crucibles, and two or more closed furnace bodies are connected in parallel to form a parallel circuit. According to the matching of the output power of the power supply system and the load power, the parallel circuit and the series circuit are combined to make the load relatively balanced and the operation stable. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a top view of a zero-carbon roasting equipment for carbon products of the present utility model.

[0016] In the figure:

[0017] 1. Closed furnace body; 2. Heat-resistant and electrically conductive crucible; 3. Power supply system; 4. Gas collecting hood; 5. Smoke pipe; 6. Gas treatment device; 7. Heat-resistant and electrically conductive tube; 31. Furnace transformer; 32. Positive busbar; 33. Negative busbar; 34. High-current switch; 61. Electrostatic tar precipitator; 62. Gas turbine generator set; 63. Methanol reaction tower. Detailed Embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0019] Embodiment: As Figure 1 shown, a zero-carbon roasting device for carbon products includes: four sealed furnace bodies 1 and a number of vertically arranged heat-resistant conductive crucibles 2 connected in series installed in each sealed furnace body. All the heat-resistant conductive crucibles are powered by a power supply system 3. A gas collecting hood 4 is installed on each sealed furnace body, and all the gas collecting hoods 4 are connected to a gas treatment device 6 through a smoke pipe 5. All the heat-resistant conductive crucibles in each sealed furnace body are connected in series end to end, and one heat-resistant conductive crucible is connected to the next heat-resistant conductive crucible through a heat-resistant conductive pipe 7.

[0020] As Figure 1 shown, the power supply system 3 includes a furnace transformer 31 with a voltage regulating device, a positive busbar 32, a negative busbar 33, and a large current switch 34. The furnace transformer 31 is respectively connected to the positive busbar 32 and the negative busbar 33. The positive busbar 32 and the negative busbar 33 are respectively electrically connected to the first heat-resistant conductive crucible and the last heat-resistant conductive crucible in each sealed furnace body, and a large current switch 34 is installed at the connection. Each sealed furnace body can be disconnected through the large current switch.

[0021] As Figure 1 shown, the gas treatment device 6 includes an electric tar precipitator 61, a gas turbine generator set 62, and a methanol reaction tower 63. A three-way valve is installed on the gas collecting hood. One end of the three-way valve is connected to the electric tar precipitator 61, the outlet of the electric tar precipitator 61 is connected to the gas turbine generator set 62, the outlet of the gas turbine generator set 62 is connected to the methanol reaction tower 63, and the other end of the three-way valve is connected to a nitrogen input pipe. Nitrogen is introduced when the air needs to be removed from the sealed furnace body.

[0022] The heat-resistant conductive crucible and the heat-resistant conductive pipe are made of the same conductive material, both made of steel material. Conducting with the same material avoids the influence caused by different conductive properties of different materials. Eight heat-resistant conductive pipes are connected between one heat-resistant conductive crucible and the next heat-resistant conductive crucible to ensure the current in each heat-resistant conductive crucible is balanced and stable.

[0023] The power supply system of the present utility model is used to supply power to the heat-resistant conductive crucibles in the sealed furnace body, and other existing equipment can also be used for the power supply system. The present utility model is provided with at least one sealed furnace body. A series circuit formed by a number of heat-resistant conductive crucibles is installed in each sealed furnace body. Two or more sealed furnace bodies are connected in parallel to form a parallel circuit. The current passes through the heat-resistant conductive crucibles and generates resistance heat according to Joule's law, increasing the load voltage and reducing the current, making the load circuit more reasonable. According to the matching of the output power of the power supply system and the load power, the parallel circuit and the series circuit are matched to make the load more balanced and the operation more stable.

[0024] The roasting equipment of the present utility model avoids consuming fuel gas. The volatile gas discharged by the carbon forming product in the roasting process is collected by the gas collecting hood, enters the electric tar precipitator for purification through the flue gas pipe, and then enters the gas turbine generator set to do work and generate electricity, or can be used as fuel. The carbon dioxide discharged by the gas turbine enters the methanol reaction tower and is hydrogenated by catalysis to produce methanol to achieve zero carbon emission.

[0025] During use, each heat-resistant conductive crucible is filled with carbon forming products and quartz sand as filler. When the power supply system supplies power, the heat-resistant conductive crucible will generate heat when the current passes through it, and it is continuously heated for 600 - 800 h and heated to 700 - 1000 °C according to the different uses of the roasted products. After power failure, the gas collecting hood is opened to cool down to 300 °C, and the roasted products are taken out for cleaning.

[0026] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A zero-carbon roasting equipment for carbon products, characterized in that: include: At least one closed furnace body and several vertical heat-resistant conductive saggers connected in series installed in each closed furnace body, all heat-resistant conductive saggers are powered by a power supply system, each closed furnace body is equipped with a gas collecting hood, all the gas collecting hoods are connected to the gas treatment device through a flue gas pipe, and more than two closed furnace bodies are connected in parallel to form a parallel circuit.

2. The zero-carbon roasting equipment for carbon products according to claim 1 is characterized in that: The power supply system includes a furnace transformer with a voltage regulating device, a positive busbar, a negative busbar and a high-current switch. The furnace transformer is connected to the positive busbar and the negative busbar respectively. The positive busbar and the negative busbar are electrically connected to the first heat-resistant conductive sagger and the rear heat-resistant conductive sagger in each closed furnace body respectively, and a high-current switch is installed at the connection.

3. The zero-carbon roasting equipment for carbon products according to claim 1 is characterized in that: All heat-resistant conductive saggers in each closed furnace body are connected in series head to tail, and one heat-resistant conductive sagger is connected to the next heat-resistant conductive sagger through a heat-resistant conductive pipe.

4. The zero-carbon roasting equipment for carbon products according to claim 1, characterized in that: The gas processing device includes an electric tar precipitator, a steam turbine generator set and a methanol reaction tower. A three-way valve is installed on the flue gas pipe. The electric tar precipitator is connected to one end of the three-way valve, the steam turbine generator set is connected to the outlet of the electric tar precipitator, the methanol reaction tower is connected to the outlet of the steam turbine generator set, and the other end of the three-way valve is connected to the nitrogen input pipe.

5. The zero-carbon roasting equipment for carbon products according to claim 3 is characterized in that: The heat-resistant conductive sagger and the heat-resistant conductive tube are made of the same conductive material.

6. The zero-carbon roasting equipment for carbon products according to claim 5, characterized in that: The heat-resistant conductive sagger and the heat-resistant conductive tube are both made of steel.

7. The zero-carbon roasting equipment for carbon products according to claim 3 is characterized in that: Eight heat-resistant conductive tubes are connected between one heat-resistant conductive sagger and the next heat-resistant conductive sagger.

8. The zero-carbon roasting equipment for carbon products according to claim 3 is characterized in that: The closed furnace body includes four.

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