A dry acetylene production process calcium carbide slag silicon iron removal collection treatment system

Abstract

The utility model discloses a dry process acetylene production process carbide slag silicon iron collection management system, the carbide slag export of acetylene generator is butt joint with chain conveyer one end, and the other end of chain conveyer is butt joint with the entrance of bucket elevator, and the fixedly connected with the outlet end of bucket elevator has the residue box, and the front end entrance of residue box is linked with the outlet of bucket elevator, and the rear end outlet of residue box is butt joint with the residue storehouse entrance, and the inside wall of the top of residue box is installed with electromagnetic iron remover, and the bottom of residue box is opened to have the drop opening, and the drop opening is installed with the gate through the threaded tube and is connected with the buffer storehouse, and the buffer storehouse export is connected with the dropping tube, and is installed with the plug valve on the dropping tube. The utility model discloses utilize the newly added electromagnetic iron remover and extract the silicon iron with high silicon content in the carbide slag after the reaction of carbide, and sell outside the car. The silicon iron in the carbide slag is collected and sold, reduces the production cost of enterprise, and improves the on -the -spot cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of dry acetylene process technology, and in particular to a system for collecting and treating ferrosilicon from calcium carbide slag in dry acetylene production processes. Background Technology

[0002] The dry acetylene generator is an advanced acetylene production unit, primarily used to generate acetylene gas through the reaction of calcium carbide with water. The core of the dry acetylene generator is the reaction of calcium carbide with water to produce acetylene gas and calcium carbide slag. The reaction equation is: CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂ + 127.3 kJ / mol. Unlike the wet process, in the dry process, water is sprayed into the calcium carbide in a mist form, and the heat of reaction is carried away by the evaporation of the water. The resulting calcium carbide slag is a dry powder.

[0003] The specific process flow is as follows:

[0004] 1. Calcium carbide pretreatment: Calcium carbide is crushed and screened to make its particle size suitable for the reaction (usually less than 5 mm), and then sent to the acetylene generator through a conveying device.

[0005] 2. Acetylene generation: In the acetylene generator, water is sprayed into the calcium carbide in the form of mist, and the reaction temperature is controlled at 90-110℃. The crude acetylene gas generated by the reaction, along with water vapor, enters the condenser for cooling.

[0006] 3. Cooling and purification: After cooling, the acetylene gas is purified to remove impurities before entering the gas holder or subsequent processes.

[0007] Calcium carbide slag treatment: The calcium carbide slag produced by the reaction is in the form of dry powder and can be directly used to produce cement or other building materials.

[0008] Good environmental performance: The dry process does not produce wastewater, and the carbide slag has low water content, making it easy to treat.

[0009] High resource utilization rate: high acetylene recovery rate (greater than 98.5%), and significantly reduced water consumption.

[0010] High safety: The entire reaction process takes place in a closed system, reducing the risk of acetylene leakage.

[0011] Dry acetylene generators are widely used in the chemical industry, particularly in the production of acetylene via the calcium carbide process, such as in the production of PVC and 1,4-butanediol. With increasing environmental requirements and a focus on resource utilization efficiency, dry acetylene generators are gradually becoming the mainstream choice. In the future, dry acetylene generators will develop towards greater efficiency, energy saving, and environmental friendliness, further optimizing the process flow, reducing production costs, and improving equipment stability and reliability.

[0012] Currently, during the operation of dry-process acetylene generators in China, the byproduct calcium carbide slag is directly sold or further processed. The lack of collection and treatment of the ferrosilicon within the calcium carbide slag leads to increased production costs and is detrimental to the long-term stable development of the plant. Utility Model Content

[0013] The purpose of this invention is to overcome the deficiencies of existing technologies and provide a system for collecting and treating ferrosilicon from calcium carbide slag in dry acetylene production processes.

[0014] This utility model is achieved through the following technical solution:

[0015] A dry acetylene production process calcium carbide slag removal and ferrosilicon collection and treatment system includes an acetylene generator, a chain conveyor, a bucket elevator, and a slag bin. The calcium carbide slag outlet of the acetylene generator is connected to one end of the chain conveyor, and the other end of the chain conveyor is connected to the inlet of the bucket elevator. A slag box is fixedly connected to the outlet of the bucket elevator. The front inlet of the slag box is connected to the outlet of the bucket elevator, and the rear outlet of the slag box is connected to the inlet of the slag bin. An electromagnetic separator is installed on the top inner wall of the slag box, and a drop outlet is opened at the bottom of the slag box. A gate is installed at the drop outlet. The drop outlet is connected to a buffer bin through a threaded pipe. The outlet of the buffer bin is connected to a discharge pipe, and a slide valve is installed on the discharge pipe.

[0016] An observation door is provided on the bucket elevator.

[0017] The observation door is a detachable and portable observation door.

[0018] The gate is an electric gate, which opens when the electromagnetic separator is de-energized.

[0019] The slag box is a rectangular box.

[0020] The width of the electromagnetic separator is greater than the width of the slag box.

[0021] The calcium carbide slag produced by the acetylene generator is discharged from its outlet and enters the chain conveyor.

[0022] The chain conveyor transports the calcium carbide slag to the inlet of the bucket elevator.

[0023] Bucket elevators lift calcium carbide slag to a certain height and transport it to the slag box.

[0024] Iron removal process:

[0025] An electromagnetic separator is installed on the inner wall of the top of the slag box. When carbide slag enters the slag box, the electromagnetic separator is energized and generates a magnetic field.

[0026] Ferromagnetic impurities such as ferrosilicon are adsorbed onto the surface of the electromagnetic separator under the action of a magnetic field, thus separating them from the carbide slag.

[0027] Carbide slag discharge:

[0028] After iron removal, the calcium carbide slag enters the slag bin through the slag discharge port of the slag box.

[0029] Ferrosilicon collection and treatment:

[0030] When the electromagnetic separator is de-energized, the ferrosilicon impurities adsorbed on the surface of the electromagnetic separator fall off due to the loss of the magnetic field.

[0031] At this time, the electric gate opens, and the ferrosilicon impurities enter the buffer chamber through the drop outlet and are finally discharged through the discharge pipe, thus realizing the collection and treatment of ferrosilicon.

[0032] The advantages of this utility model are:

[0033] 1. High-efficiency iron removal:

[0034] Electromagnetic separators can effectively adsorb ferromagnetic impurities such as ferrosilicon in carbide slag, significantly improving the purity of carbide slag and reducing the impact of impurities on subsequent processes.

[0035] The width of the electromagnetic separator is greater than the width of the slag box, ensuring that the carbide slag undergoes sufficient iron removal treatment within the slag box, thereby improving iron removal efficiency.

[0036] 2. High degree of automation:

[0037] The linkage design between the electric gate and the electromagnetic separator enables automated operation. When the electromagnetic separator is de-energized, the electric gate automatically opens, and ferrosilicon impurities are automatically discharged, reducing manual intervention and improving work efficiency.

[0038] 3. Simple structure and stable operation:

[0039] The system mainly consists of a chain conveyor, a bucket elevator, a slag box, and a buffer silo. It has a simple structure and is easy to install and maintain.

[0040] The components are connected by threaded pipes, gate valves, etc., ensuring a firm connection and stable and reliable operation.

[0041] 4. Easy to observe and maintain:

[0042] The bucket elevator is equipped with a detachable portable observation door, which allows operators to observe the conveying of carbide slag at any time and promptly detect and handle any abnormalities.

[0043] The detachable design of the observation door also facilitates maintenance and cleaning of the inside of the bucket elevator.

[0044] 5. Safe and reliable:

[0045] Through reasonable design and automated control, the risks of manual operation are reduced and the safety of the entire system is improved.

[0046] The linkage design between the power-off function and the electric gate of the electromagnetic separator ensures the timely discharge of ferrosilicon impurities, avoids the accumulation of impurities in the system, and guarantees the normal operation of the system.

[0047] This invention utilizes a newly added electromagnetic separator to extract high-silicon ferrosilicon from the calcium carbide slag after the calcium carbide reaction, which is then loaded onto trucks for sale. Collecting and selling the ferrosilicon from the calcium carbide slag reduces production costs for enterprises and improves on-site cleanliness. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0051] like Figure 1 As shown, a dry acetylene production process calcium carbide slag removal and ferrosilicon collection and treatment system includes an acetylene generator 1, a chain conveyor 2, a bucket elevator 3, and a slag bin 4. The calcium carbide slag outlet of the acetylene generator 1 is connected to one end of the chain conveyor 2, forming a preliminary conveying path for the calcium carbide slag. The other end of the chain conveyor 2 is connected to the inlet of the bucket elevator 3. A slag box 5 is fixedly connected to the outlet of the bucket elevator 3. The front inlet of the slag box 5 is connected to the outlet of the bucket elevator 3, and the rear outlet of the slag box 5 is connected to the inlet of the slag bin 4. An electromagnetic iron separator 11 is installed on the top inner wall of the slag box 5. A drop outlet is opened at the bottom of the slag box 5, and a gate is installed at the drop outlet. The drop outlet is connected to a buffer bin 7 through a threaded pipe 6. The outlet of the buffer bin 7 is connected to a discharge pipe 8, and a slide valve 9 is installed on the discharge pipe 8. Buffer bin 7 stores ferrosilicon transported from threaded pipe 6, providing buffer space for subsequent processing. The ferrosilicon's descent can be precisely controlled by opening and closing the slide valve 9. When a ferrosilicon truck is parked under the slide valve 9, it can be loaded for sale, realizing the resource utilization of ferrosilicon. Slag bin 4 stores the calcium carbide slag after ferrosilicon separation, facilitating its proper disposal later.

[0052] An observation door 10 is provided on the bucket elevator 3.

[0053] The observation door 10 is a detachable and portable observation door. This observation door 10 allows staff to quickly check the internal condition of the equipment, and in case of blockages or other abnormalities, it can be quickly cleared to ensure the stable operation of the system.

[0054] The gate is an electric gate, which opens when the electromagnetic separator 11 is de-energized.

[0055] The slag box 5 is a rectangular box.

[0056] The width of the electromagnetic iron separator 11 is greater than the width of the slag box 5. This arrangement can fully cover the top area of ​​the slag box 5, ensuring that the ferrosilicon in the carbide slag can be fully adsorbed during the falling process.

[0057] Chain conveyor 2, bucket elevator, slag box 5, and buffer bin 7 are equipped with protective gas nitrogen pipelines.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dry acetylene production process calcium carbide slag desiliconized ferrous metal collection and treatment system, characterized in that: The invention relates to a slag conveying device, which comprises an acetylene generator, a chain conveyor, a bucket elevator and a slag bin, the calcium carbide slag outlet of the acetylene generator is connected with one end of the chain conveyor, the other end of the chain conveyor is connected with the inlet of the bucket elevator, a slag falling box is fixedly connected with the outlet of the bucket elevator, the front end inlet of the slag falling box is communicated with the outlet of the bucket elevator, the rear end outlet of the slag falling box is connected with the inlet of the slag bin, an electromagnetic iron remover is installed on the inner wall of the top of the slag falling box, a falling opening is formed on the bottom of the slag falling box, a gate is installed on the falling opening, the falling opening is connected with a buffer bin through a threaded pipe, the outlet of the buffer bin is connected with a falling pipe, and a plug valve is installed on the falling pipe.

2. The silicon-iron removal and collection system for carbide slag in a dry acetylene production process according to claim 1, characterized in that: An observation door is formed on the bucket elevator.

3. The silicon-iron removal and collection system for carbide slag in a dry acetylene production process according to claim 2, characterized in that: The observation door is a detachable portable observation door.

4. The silicon-iron removal and collection system for carbide slag in a dry acetylene production process according to claim 1, characterized in that: The gate is an electric gate, which is opened when the electromagnetic iron remover is powered off.

5. The silicon-iron removal and collection system for carbide slag in a dry acetylene production process according to claim 1, characterized in that: The slag falling box is a rectangular box.

6. The silicon-iron removal and collection system for carbide slag in the dry acetylene production process according to claim 5, characterized in that: The width of the electromagnetic iron remover is greater than the width of the slag falling box.

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