Novel sulfur melting kettle and control method thereof

Abstract

The invention discloses a novel sulfur melting kettle and a control method thereof, and relates to the technical field of sulfur melting kettles.The novel sulfur melting kettle comprises a skirt and a kettle body, the kettle body is arranged on the upper portion of the skirt, a feeding port is formed in the upper portion of the kettle body, the feeding port is connected with a feeding pump, the feeding pump is connected with a hopper, a sulfur discharging port is formed in the lower portion of the kettle body, and the sulfur discharging port is connected with the kettle body. A steam inlet and a slag tap are formed in the side end of the kettle body. According to the novel sulfur melting kettle and the control method thereof, by adjusting relevant parameters, it is guaranteed that equipment is controlled to operate in the optimal state, discharged separation liquid is clearer, more converted crystal sulfur is obtained, energy consumption is lower, and efficiency is higher. And sulfur and slag can be automatically discharged, so that the labor intensity is reduced, and the contact between people and a severe environment is reduced.

Description

Technical Field

[0001] This invention relates to the field of sulfur melting kettle technology, and in particular to a novel sulfur melting kettle and its control method. Background Technology

[0002] The sulfur melting kettle is a core piece of equipment used in sulfur production to treat sulfur foam, achieving sulfur purification by heating and separating sulfur paste. Traditional sulfur melting kettles suffer from problems such as low recovery efficiency, high pollution emissions, and difficult operation, which are detrimental to environmental protection and production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a novel sulfur melting kettle that solves the problems of low recovery efficiency and high operation difficulty of traditional sulfur melting kettles.

[0004] To achieve the above objectives, the present invention provides a novel sulfur melting kettle, comprising a skirt and a kettle body. The kettle body is disposed on the upper part of the skirt, and a feed inlet is provided on the upper part of the kettle body. The feed inlet is connected to a feed pump, and the feed pump is connected to a hopper. A sulfur discharge port is provided on the lower part of the kettle body, and a steam inlet and a slag discharge port are provided on the side end of the kettle body.

[0005] Preferably, the slag discharge port is located at the end of the slag discharge circuit, and a valve and a sensor are provided at the end of the slag discharge port. Both the sensor and the valve are connected to the control mechanism.

[0006] Preferably, the control mechanism is an independent PLC control system. The control mechanism is connected to the slag discharge mechanism, the feeding mechanism, the heating mechanism, and the sulfur discharge mechanism. The heating mechanism includes an internal heating unit and an external heating unit. The external heating unit includes an external coil. The external coil is spirally arranged about the reactor body. The ends of the external coil are respectively provided with a steam inlet and a steam outlet. The internal heating unit includes an internal coil, the ends of which are connected to the steam outlet and the outlet, respectively.

[0007] Preferably, the feeding mechanism includes a hopper disposed outside the vessel body, an umbrella-shaped distributor disposed inside the vessel body, a bubble-breaking grid disposed below the umbrella-shaped distributor, the bubble-breaking grid having two layers, and a feed valve connected to the hopper connected to the control mechanism.

[0008] Preferably, the slag discharge mechanism includes a slag collection tank, which is connected to the slag discharge port, and the valve body connected to the slag discharge port is an electric insulated ball valve.

[0009] Preferably, the sulfur release mechanism includes an anti-vortex plate and a liquid level sensor. Multiple liquid level sensors are provided, and all of the multiple liquid level sensors are located inside the vessel body, which is connected to the anti-vortex plate.

[0010] Preferably, the skirt support includes a connecting seat, which is configured with an arc-shaped structure and is connected to the vessel body.

[0011] Preferably, a temperature sensor is installed inside the vessel, and both the temperature sensor and the liquid level sensor are connected to the control mechanism.

[0012] A novel control method for a sulfur melting reactor includes the following steps: Step 1: Turn on the feed pump to add sulfur foam solution. The sulfur foam solution is separated into foams by an umbrella-shaped distributor and a double-layer defoaming grid, and then enters the heating mechanism for heating. Step 2: The temperature inside the reactor is monitored in real time by a temperature sensor. After heating inside the reactor, the sulfur foam separates from the solution. Step 3: The desulfurization liquid separated from the sulfur is raised to the top of the reactor and discharged. Step four: Sulfur and slag are introduced into the control mechanism through sensors. The control mechanism determines the position of the slag through sensors, and sulfur and slag are discharged simultaneously.

[0013] Therefore, this invention employs a novel sulfur melting kettle and its control method. The sulfur melting kettle utilizes a fully automated computer control system, enabling fully automatic control, parameter recording, and fault diagnosis, thereby improving the stability and reliability of the equipment. The improved steam coil design provides higher heating and heat exchange efficiency, reducing energy consumption and production costs.

[0014] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a novel sulfur melting kettle according to the present invention; Figure 2 This is a top view of a novel sulfur melting kettle according to the present invention; Figure 3 This is a partial cross-sectional view of a novel sulfur melting kettle according to the present invention; Figure 4 This is a control flow diagram of a novel sulfur melting kettle according to the present invention; Figure Labels 1. Reactor body; 2. External coil; 3. Sulfur discharge port; 4. Slag discharge port; 5. Steam inlet; 6. Feed pump; 7. Feed inlet; 8. Internal coil; 9. Defoaming grid; 10. Umbrella distributor; 11. Skirt; 12. Liquid outlet; 13. Temperature sensor. Detailed Implementation

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example Please see Figures 1-4 The present invention provides a novel sulfur melting kettle, including a skirt base 11 and a kettle body 1. The kettle body 1 is disposed on the upper part of the skirt base 11. The upper part of the kettle body 1 is provided with a feed inlet 7, which is connected to a feed pump 6. The feed pump 6 is connected to a hopper. The lower part of the kettle body 1 is provided with a sulfur discharge port 3. The side end of the kettle body 1 is provided with a steam inlet 5 and a slag discharge port 4.

[0019] Slag discharge port 4 is located at the end of the slag discharge circuit. Slag discharge port 4 discharges sulfur slag, impurities, and incompletely melted sulfur deposited at the bottom of the vessel. A valve and sensor are installed at the end of slag discharge port 4, both of which are connected to the control mechanism. The control system determines the slag position, enabling simultaneous sulfur and slag discharge. The slag is then processed to mix with the sulfur. The slag discharge mechanism includes a slag collection tank connected to slag discharge port 4. Slag discharged from vessel 1 enters the slag collection tank through slag discharge port 4, ensuring timely collection and processing to improve the working environment. The valve connected to slag discharge port 4 is an electrically operated insulated ball valve, which is easy to control and prevents sulfur solidification and blockage.

[0020] The control mechanism facilitates flow and temperature control, allowing for rapid adjustments to the reactor's status to optimize operation. It achieves results unattainable through manual operation and avoids prolonged work in harsh environments. The control mechanism is an independent PLC control system, connected to the slag discharge, feeding, heating, and sulfur removal mechanisms.

[0021] The heating mechanism includes an internal heating unit and an external heating unit. The external heating unit includes an external coil 2, which is spirally arranged around the vessel body 1 to ensure heating uniformity, save on manufacturing materials, and guarantee heat exchange efficiency. Multiple temperature sensors 13 are installed on the vessel body 1 to monitor the internal temperature in real time. The ends of the external coil 2 are respectively equipped with a steam inlet 5 and a steam outlet. The internal heating unit includes an internal coil 8, whose ends are connected to the steam outlet and the steam outlet, respectively. Heating through the internal coil 8 improves heating capacity and achieves the effect of reducing slag and increasing flow. The use of a coil steam heating design replaces the previous jacketed steam heating design, breaking through the capacity design bottleneck, enabling the design and manufacture of ultra-large vessels, reducing weight, enhancing heat conduction uniformity, and achieving higher heating efficiency. The use of steam coil technology can improve the thermal efficiency and heat exchange efficiency of the equipment, reduce energy consumption and production costs. The steam coil design has higher heating efficiency and heat exchange efficiency, reducing energy consumption and production costs.

[0022] The feeding mechanism includes a hopper located outside the vessel body 1 and an umbrella-shaped distributor 10 located inside the vessel body 1. The umbrella-shaped distributor 10 evenly disperses the sulfur foam in the feed to avoid local impact on the liquid surface. A bubble-breaking grid 9 is located at the lower part of the umbrella-shaped distributor 10. The bubble-breaking grid 9 has two layers. An outlet 12 is located at the upper part of the bubble-breaking grid 9 and is located at the end of the feed inlet 7. The double-layer bubble-breaking grid 9 punctures the sulfur foam bubbles and promotes the separation of sulfur particles from the desulfurization liquid. The feed valve connected to the hopper is connected to the control mechanism.

[0023] An internal circulation loop is added to the feeding mechanism and the vessel body 1. The internal circulation pipeline forms a loop between the internal circulation outlet and the feed inlet 7 through the liquid inlet pump to quickly heat the internal circulation of the vessel and also to perform secondary treatment on the separated liquid to ensure that the separated liquid is clear.

[0024] The sulfur release mechanism includes an anti-vortex plate and a liquid level sensor. Multiple liquid level sensors are installed inside the vessel body 1. The inside of the vessel body 1 is connected to the anti-vortex plate. The anti-vortex plate prevents the generation of vortices when liquid sulfur is discharged, thus avoiding the entrainment of desulfurization liquid.

[0025] The skirt support 11 includes a connecting seat, which is designed with an arc shape and connects to the vessel body 1. Adding the skirt support 11 structure makes equipment installation simpler, more convenient, and more economical. Previously, manufacturers needed to build factory buildings or steel structure supports to install the sulfur melting vessel. Using the skirt support 11 structure saves these costs and shortens the construction period, making it more suitable for the needs of manufacturers with different circumstances. Furthermore, the coil structure allows the skirt support 11 structure to be used with sulfur melting vessels of various specifications.

[0026] The reactor body 1 adopts environmentally friendly materials and structural design to reduce the generation and emission of pollutants, achieving the standard of zero emissions of waste gas, wastewater, and solid waste. A temperature sensor and a liquid level sensor are installed inside the reactor body 1, both connected to the control mechanism. The temperature sensor monitors the temperature of the sulfur foam in the middle of the reactor and the temperature of the liquid sulfur at the bottom. The liquid level sensor monitors the levels of the desulfurization liquid and sulfur in the reactor.

[0027] A novel method for controlling a sulfur melting reactor includes the following steps: Step 1: Start the feed pump 6 to add sulfur foam solution. The sulfur foam solution passes through the umbrella-shaped distributor 10 and the double-layer defoaming grid 9 for foam separation and then enters the heating mechanism for heating.

[0028] Step two involves real-time monitoring of the temperature inside the reactor using a temperature sensor. After heating inside the reactor, the sulfur foam separates from the solution. Through automatic adjustment of parameters, the control equipment is kept in optimal operating condition.

[0029] Step 3: The desulfurization liquid separated from the sulfur is raised to the top of the reactor and discharged.

[0030] Step four: Sulfur and slag are introduced into the control mechanism through sensors. The control mechanism determines the location of the slag through sensors, and sulfur and slag are discharged simultaneously. The control mechanism ensures that the control equipment operates in the best condition, resulting in clearer discharged separation liquid, more converted crystalline sulfur, lower energy consumption, and higher efficiency.

[0031] Therefore, this invention employs a novel sulfur melting kettle and its control method. The sulfur melting kettle utilizes a fully automated computer control system, enabling fully automatic control, parameter recording, and fault diagnosis, thereby improving the stability and reliability of the equipment. The improved steam coil design provides higher heating and heat exchange efficiency, reducing energy consumption and production costs. Sulfur and slag levels are introduced into the control system via sensors, allowing for precise judgment and control of the liquid conditions within the container. Based on these conditions, the system automatically adjusts relevant parameters such as pressure, temperature, and flow rate.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A novel sulfur melting kettle, characterized in that: It includes a skirt base and a vessel body. The vessel body is located on the upper part of the skirt base. The upper part of the vessel body is provided with a feed inlet, which is connected to a feed pump. The feed pump is connected to a hopper. The lower part of the vessel body is provided with a sulfur discharge port. The side end of the vessel body is provided with a steam inlet and a slag discharge port.

2. The novel sulfur melting kettle according to claim 1, characterized in that: The slag discharge port is located at the end of the slag discharge circuit, and a valve and a sensor are installed at the end of the slag discharge port. Both the sensor and the valve are connected to the control mechanism.

3. A novel sulfur melting kettle according to claim 2, characterized in that: The control mechanism is an independent PLC control system. The control mechanism is connected to the slag discharge mechanism, the feeding mechanism, the heating mechanism, and the sulfur discharge mechanism. The heating mechanism includes an internal heating unit and an external heating unit. The external heating unit includes an external coil. The external coil is spirally arranged about the reactor body. The ends of the external coil are respectively provided with a steam inlet and a steam outlet. The internal heating unit includes an internal coil, the ends of which are connected to the steam outlet and the outlet, respectively.

4. A novel sulfur melting kettle according to claim 3, characterized in that: The feeding mechanism includes a hopper located outside the vessel body, an umbrella-shaped distributor located inside the vessel body, a bubble-breaking grid located below the umbrella-shaped distributor, the bubble-breaking grid having two layers, and a feed valve connected to the hopper connected to the control mechanism.

5. A novel sulfur melting kettle according to claim 4, characterized in that: The slag discharge mechanism includes a slag collection tank, which is connected to the slag discharge port. The valve body connected to the slag discharge port is an electric insulated ball valve.

6. A novel sulfur melting kettle according to claim 5, characterized in that: The sulfur release mechanism includes an anti-vortex plate and a liquid level sensor. Multiple liquid level sensors are provided, and all of the liquid level sensors are located inside the vessel body, which is connected to the anti-vortex plate.

7. A novel sulfur melting kettle according to claim 6, characterized in that: The skirt support includes a connecting seat, which is configured as an arc-shaped structure and is connected to the vessel body.

8. A novel sulfur melting kettle according to claim 7, characterized in that: A temperature sensor is installed inside the vessel, and both the temperature sensor and the liquid level sensor are connected to the control mechanism.

9. A novel control method for a sulfur melting reactor according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Turn on the feed pump to add sulfur foam solution. The sulfur foam solution is separated into foams by an umbrella-shaped distributor and a double-layer defoaming grid, and then enters the heating mechanism for heating. Step 2: The temperature inside the reactor is monitored in real time by a temperature sensor. After heating inside the reactor, the sulfur foam separates from the solution. Step 3: The desulfurization liquid separated from the sulfur is raised to the top of the reactor and discharged. Step four: Sulfur and slag are introduced into the control mechanism through sensors. The control mechanism determines the position of the slag through sensors, and sulfur and slag are discharged simultaneously.

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