Energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on electromagnetic heating device

Abstract

This invention discloses an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device, comprising: a potassium sulfate Mannheim furnace body, an electromagnetic heating device, and a temperature control device. The potassium sulfate Mannheim furnace body includes a combustion chamber with an air inlet and an air return outlet. The electromagnetic heating device includes: a base, a heating air supply pipe, an electromagnetic coil, and a blower. The heating air supply pipe is mounted on the base, and the electromagnetic coil is wound around the heating air supply pipe. The heating air supply pipe, the air inlet, and the air return outlet of the combustion chamber form a heating circulation channel. The blower causes the airflow in the heating circulation channel to circulate repeatedly. The temperature control device is used to control the temperature of the airflow in the heating air supply pipe. This energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device integrates the electromagnetic heating device within a limited space, thereby improving heating efficiency. Simultaneously, it uses a more economical and effective means to control the heating temperature of the electromagnetic heating device, resulting in better energy-saving and environmental protection effects.

Description

Technical Field

[0001] This invention relates to the field of potassium sulfate Mannheim furnace technology, and in particular to an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device. Background Technology

[0002] Traditional potassium sulfate Mannheim furnaces primarily use natural gas for heating. During operation, most of the heat released by the combustion of natural gas is carried away by the exhaust gas, resulting in low energy efficiency.

[0003] To better respond to the national call for energy conservation and environmental protection, potassium sulfate production enterprises need to upgrade their existing potassium sulfate Mannheim furnaces by replacing traditional natural gas heating with electromagnetic heating. Electromagnetic heating offers advantages such as high heat conversion rate, accurate temperature control, energy saving, and environmental friendliness.

[0004] The main technical problems encountered during the technical transformation of potassium sulfate Mannheim furnaces are as follows:

[0005] (1) The existing potassium sulfate Mannheim furnace was designed specifically for natural gas heating. Its space dimensions are fixed. How to integrate electromagnetic heating devices in a limited space to improve heating efficiency is a technical challenge that needs to be addressed.

[0006] (2) How to control the heating temperature of the electromagnetic heating device in a more economical and effective way so that the materials in the furnace can react normally is also a technical problem that needs to be solved. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device. The electromagnetic heating device is integrated in a limited space to improve heating efficiency, and the heating temperature of the electromagnetic heating device is controlled by a more economical and effective means.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] An energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device includes: a potassium sulfate Mannheim furnace body, an electromagnetic heating device, and a temperature control device;

[0010] The potassium sulfate Mannheim furnace body includes a combustion chamber, which has an air inlet and an air outlet;

[0011] The electromagnetic heating device includes: a base, a heating air supply pipe, an electromagnetic coil, and a blower; the heating air supply pipe is installed on the base, the electromagnetic coil is wound around the heating air supply pipe, the heating air supply pipe and the air inlet and air outlet of the combustion chamber form a heating circulation channel, and the blower causes the airflow in the heating circulation channel to circulate repeatedly;

[0012] The temperature control device is used to control the airflow temperature in the heated air supply duct.

[0013] In one embodiment,

[0014] The heated air supply pipe includes: a spiral wound pipe and an airflow return pipe; the spiral wound pipe is wound in a spiral manner to obtain a through hollow cavity, and the spiral wound pipe has an air inlet and an air outlet, which are located at the two end faces of the hollow cavity respectively.

[0015] One end of the airflow return pipe is connected to the air outlet, and the other end of the airflow return pipe is connected to the hollow chamber located at one end face of the air inlet.

[0016] The hollow cavity is located at one end face of the air outlet and connected to the air inlet of the combustion chamber, and the air return port of the combustion chamber is connected to the air inlet through the blower;

[0017] The spiral winding tube forms several winding connecting layers, and the connection points of the several winding connecting layers form a through spiral water channel, which has an inlet and an outlet.

[0018] The temperature control device includes: a water tower, a water pump, an inlet pipe, and a return pipe; the water tower is connected to the inlet via the inlet pipe, and the outlet is connected to the water tower via the return pipe. A water circulation channel is formed between the water tower, the inlet pipe, the spiral water channel, and the return pipe, and the water pump is used to circulate the water in the water circulation channel.

[0019] In one embodiment, the electromagnetic heating device further includes an inner cylinder, which is placed in the hollow cavity, and an annular air passage with a ring-shaped cross-section is formed between the inner cylinder and the cavity wall of the hollow cavity.

[0020] In one embodiment, the annular air passage extends in a straight line from one end of the hollow chamber to the other end, and a turbofan is provided in the annular air passage.

[0021] In one embodiment, the wall of the spiral wound tube has grooves located between several winding connecting layers. The several winding connecting layers are welded together to seal the grooves, and the grooves in each winding connecting layer are interconnected to form the spiral waterway.

[0022] In one embodiment, there are multiple electromagnetic heating devices arranged around the potassium sulfate Mannheim furnace body; each electromagnetic heating device is equipped with a separate temperature control device.

[0023] In one embodiment, the number of electromagnetic heating devices is four, and the power of each electromagnetic heating device is 120KW.

[0024] In one embodiment, the outer wall of the spiral wound tube is covered with an insulation layer.

[0025] The present invention discloses an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device. The electromagnetic heating device is integrated in a limited space to improve heating efficiency, and the heating temperature of the electromagnetic heating device is controlled in a more economical and effective manner. Attached Figure Description

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial schematic diagram of an energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device is shown.

[0029] Figure 3 for Figure 2 A three-dimensional view (I) of the electromagnetic heating device shown;

[0030] Figure 4 for Figure 2 A three-dimensional view (II) of the electromagnetic heating device shown;

[0031] Figure 5 for Figure 2 The side view of the electromagnetic heating device shown;

[0032] Figure 6 for Figure 3 The diagram shows the structure of the heating air duct of the electromagnetic heating device.

[0033] Figure 7 for Figure 6A cross-sectional view of the heated air supply duct shown;

[0034] Figure 8 for Figure 7 Enlarged view at point A. Detailed Implementation

[0035] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] like Figure 1 As shown, the present invention discloses an energy-saving and environmentally friendly potassium sulfate Mannheim furnace 10 based on an electromagnetic heating device, comprising: a potassium sulfate Mannheim furnace body 20, an electromagnetic heating device 30, and a temperature control device 40.

[0039] like Figure 1 As shown, the potassium sulfate Mannheim furnace body 20 includes a combustion chamber 21, which has an air inlet and an air return outlet.

[0040] like Figure 2 and Figure 3 As shown, the electromagnetic heating device 30 includes: a base 100, a heating air supply pipe 200, an electromagnetic coil 300, and a blower 400. The heating air supply pipe 200 is mounted on the base 100, and the electromagnetic coil 300 is wound around the heating air supply pipe 200. The heating air supply pipe 200 forms a heating circulation channel with the air inlet and air outlet of the combustion chamber 21, and the blower 400 causes the airflow in the heating circulation channel to circulate repeatedly.

[0041] The temperature control device 40 is used to control the airflow temperature in the heated air supply duct 200.

[0042] The specific structure of the heated air supply duct 200 is described below:

[0043] like Figure 6 As shown, the heated air supply duct 200 includes a spiral wound duct 210 and an airflow return duct 220. The spiral wound duct 210 is wound in a spiral manner to form a through hollow chamber 230. The spiral wound duct 210 has an air inlet 211 and an air outlet 212, which are located at the two end faces of the hollow chamber 230, respectively.

[0044] One end of the airflow return pipe 220 is connected to the air outlet 212, and the other end of the airflow return pipe 220 is connected to the end face of the hollow chamber 230 located at the air inlet 211.

[0045] like Figure 1 and Figure 2 As shown, the hollow chamber 230 is located at one end face of the air outlet 212 and is connected to the air inlet of the combustion chamber 21. The return air inlet of the combustion chamber 21 is connected to the air inlet 211 through the blower 400.

[0046] like Figure 7 As shown, the spiral wound tube 210 forms several wound connecting layers 213, and the joints of the several wound connecting layers 213 form a through spiral channel 240 (e.g., Figure 8 As shown), the spiral waterway 240 has an inlet 241 and an outlet 242 (as shown). Figure 3 (As shown).

[0047] The specific structure of the temperature control device 40 will be described below:

[0048] like Figure 2 As shown, the temperature control device 40 includes: a water tower 500, a water pump 600, an inlet pipe 700, and a return pipe 800. The water tower 500 is connected to the inlet 241 via the inlet pipe 700, and the outlet 242 is connected to the water tower 500 via the return pipe 800. A water circulation channel is formed between the water tower 600, the inlet pipe 700, the spiral water channel 240, and the return pipe 800. The water pump 600 is used to circulate the water in the water circulation channel.

[0049] The working principle of the energy-saving and environmentally friendly potassium sulfate Mannheim furnace 10 based on the electromagnetic heating device described above will be explained below:

[0050] When the electromagnetic coil 300 is energized, the current passing through the electromagnetic coil 300 generates a magnetic field. When the magnetic field lines pass through the pipe wall of the heated air supply pipe 200, they are cut and eddy currents are generated, which causes the metal molecules of the heated air supply pipe 200 to collide and rub against each other, thereby generating heat.

[0051] When the blower 400 is working, it blows airflow into the spiral winding tube 210 through the air inlet 211. The airflow moves in a spiral motion in the narrow spiral winding tube 210, and the airflow is heated by the spiral winding tube 210 at the same time.

[0052] The heated airflow comes out from the air outlet 212 and is guided into the hollow cavity 230 by the airflow return pipe 220.

[0053] The airflow exits from one end face through the hollow cavity 230 and enters the air inlet of the combustion chamber 21. The airflow conducts heat to the reaction chamber through the combustion chamber 21. Under the continuous stirring of the stirrer, the reactants sulfuric acid and potassium chloride absorb a large amount of heat and then produce potassium sulfate and HCl gas.

[0054] The airflow circulates around the combustion chamber 21 once and then comes out from the return air inlet. Under the blowing action of the blower 400, it returns to the air inlet of the spiral winding tube 210, and the airflow forms a complete internal circulation.

[0055] In this invention, the outer wall of the spiral wound tube 210 is covered with a heat insulation layer. By setting the heat insulation layer (such as heat insulation material), heat dissipation can be reduced, effectively saving energy. In addition, the inner wall of the spiral wound tube 210 can also be provided with a baffle layer (such as an inner sleeve). By setting the baffle layer, on the one hand, the structural strength of the spiral wound tube 210 can be improved, and on the other hand, the influence of the hot air flow in the hollow cavity 230 on the electromagnetic coil 300 can be reduced.

[0056] At the same time, the temperature control device 40 is also working. The water pump 600 draws water from the water tower 500 and pumps it into the spiral water channel 240 through the water inlet pipe 700. The water flows in a spiral in the spiral water channel 240, thereby cooling and controlling the temperature of the spiral winding tube 210.

[0057] The water then flows out through the return pipe 800 and returns to the water tower 500;

[0058] A temperature sensor is installed at the spiral winding tube 210. The temperature sensor transmits the temperature data to the control center for calculation. The control center sends control commands to the water pump 600, which controls the speed of the water flow, thereby cooling and controlling the temperature of the spiral water channel 240 through water cooling. In this way, the electromagnetic heating controller used to control the electromagnetic coil 300 can operate stably with a constant power, without fluctuating power levels that could cause rapid damage to electronic components and instability in the power grid.

[0059] like Figure 4 and Figure 5As shown, the electromagnetic heating device 30 further includes an inner cylinder 900, which is placed in the hollow chamber 230. An annular air passage 910 with a ring-shaped cross-section is formed between the inner cylinder 900 and the cavity wall of the hollow chamber 230. The annular air passage 910 extends linearly from one end of the hollow chamber 230 to the other end, and a turbofan 920 is provided in the annular air passage 910.

[0060] The structural design principle of the energy-saving and environmentally friendly potassium sulfate Mannheim furnace 10 based on the electromagnetic heating device is explained below:

[0061] 1. This invention is a technical modification based on the traditional potassium sulfate Mannheim furnace that uses natural gas. The traditional potassium sulfate Mannheim furnace was designed specifically for heating natural gas, and its spatial dimensions are fixed. Due to space limitations, this invention mainly adopts a spiral wound tube 210. Due to the spiral winding, the spiral wound tube 210 has a longer and narrower airflow channel. In this way, the airflow through the pipe can be heated to the specified temperature more easily and fully, breaking the original space limitation problem.

[0062] 2. The heating air supply pipe 200 of the present invention is also provided with an airflow return pipe 220. The airflow is guided to the hollow cavity 230 through the airflow return pipe 220. This is based on the following important considerations: Since the cross-section of the spiral wound pipe 210 is relatively small, the airflow it blows out cannot diffuse. However, the hollow cavity 230 formed by the spiral wound pipe 210 has a larger diameter, which can better guide and diffuse the airflow into the combustion chamber 21. The windward surface is larger, which is more conducive to the heating of the combustion chamber 21.

[0063] 3. Traditional temperature control devices 40 mainly control the power of the electromagnetic heating controller, thereby controlling the current of the electromagnetic coil 300 to achieve temperature control. However, this method is not very effective and is costly. For example, although reducing the current of the electromagnetic coil 300 reduces the current, the spiral wound tube 210 cannot reach the specified temperature in a short time, so the effect is not significant. In contrast, this invention uses water flow for temperature control. By controlling the speed of the water flow, the temperature of the spiral wound tube 210 can be controlled. When a stable temperature is needed, the water flow can be stopped, which is very effective. In addition, by using water flow for temperature control, the electromagnetic heating controller used to control the electromagnetic coil 300 can operate stably with a constant power, avoiding sudden fluctuations that could cause rapid damage to electronic components and instability in the power grid, and at a lower cost.

[0064] 4. In this invention, the inner cylinder 900 is placed in the hollow chamber 230, and an annular air passage 910 with a ring cross-section is formed between the inner cylinder 900 and the cavity wall of the hollow chamber 230. The annular air passage 910 extends in a straight line from one end of the hollow chamber 230 to the other end. A turbo fan 920 is provided in the annular air passage 910. Under the combined action of the annular air passage 910 and the turbo fan 920, the airflow can diffuse more evenly and enter the combustion chamber.

[0065] In this invention, the wall of the spiral wound tube 210 is provided with grooves (e.g., Figure 8 As shown, the grooves are located between several winding connecting layers 213. The several winding connecting layers 213 are welded together to seal the grooves. The grooves in each winding connecting layer 213 are interconnected to form a spiral water channel. It can be understood that the wall of the spiral wound tube 210 itself has grooves. By welding the several winding connecting layers 213 of the spiral wound tube 210 together, the interconnected grooves form a spiral water channel, eliminating the need for additional pipes. The spiral water channel is integrated into the spiral wound tube 210, forming a self-contained, sturdy, and durable system.

[0066] like Figure 1 As shown, in this invention, there are multiple electromagnetic heating devices 30, which are arranged around the potassium sulfate Mannheim furnace body 20; each electromagnetic heating device 30 is equipped with a separate temperature control device 40. Preferably, there are four electromagnetic heating devices 30, and each electromagnetic heating device 30 has a power of 120KW.

[0067] This invention relates to an energy-saving and environmentally friendly potassium sulfate Mannheim furnace 10 based on an electromagnetic heating device. By transforming traditional natural gas heating into electromagnetic heating, the airflow circulates around the combustion chamber 21 and then exits through the return air port. Under the blowing action of the blower 400, it returns to the air inlet of the spiral winding tube 210, forming a complete internal circulation of airflow, reducing flue gas emissions and achieving energy-saving and environmental protection effects.

[0068] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device, characterized in that, include: Potassium sulfate Mannheim furnace body, electromagnetic heating device, temperature control device; The potassium sulfate Mannheim furnace body includes a combustion chamber with an air inlet and an air return outlet; the electromagnetic heating device includes a base, a heating air supply pipe, an electromagnetic coil, and a blower; the heating air supply pipe is installed on the base, the electromagnetic coil is wound around the heating air supply pipe, and the heating air supply pipe, together with the air inlet and air return outlet of the combustion chamber, forms a heating circulation channel; the blower causes the airflow in the heating circulation channel to circulate repeatedly; the temperature control device is used to control the temperature of the airflow in the heating air supply pipe. The heated air supply duct includes a spiral wound duct and an airflow return duct. The spiral wound duct is spirally wound to form a through hollow chamber. The spiral wound duct has an air inlet and an air outlet, which are located at opposite ends of the hollow chamber. One end of the airflow return duct is connected to the air outlet, and the other end of the airflow return duct is connected to the hollow chamber at the end face of the air inlet. The hollow chamber at the end face of the air outlet is connected to the air inlet of the combustion chamber, and the air return vent of the combustion chamber is connected to the blower. The machine is connected to the air inlet; the spiral winding tube forms several winding connecting layers, and the connection points of the several winding connecting layers form a through spiral water channel, the spiral water channel having an inlet and an outlet; the temperature control device includes: a water tower, a water pump, an inlet pipe, and a return pipe; the water tower is connected to the inlet through the inlet pipe, and the outlet is connected to the water tower through the return pipe, the water tower, the inlet pipe, the spiral water channel, and the return pipe form a water circulation channel, and the water pump is used to make the water in the water circulation channel circulate back and forth; The electromagnetic heating device also includes an inner cylinder, which is placed in the hollow cavity, and an annular air passage with a cross-section is formed between the inner cylinder and the cavity wall of the hollow cavity; The spiral wound tube has grooves on its wall, which are located between several winding connecting layers. The several winding connecting layers are welded together to seal the grooves. The grooves in each winding connecting layer are interconnected to form the spiral waterway.

2. The energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device according to claim 1, characterized in that, The annular air passage extends in a straight line from one end of the hollow chamber to the other end, and a turbofan is installed in the annular air passage.

3. The energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device according to claim 1, characterized in that, The number of electromagnetic heating devices is multiple, and the multiple electromagnetic heating devices are arranged around the body of the potassium sulfate Mannheim furnace; each electromagnetic heating device is equipped with a separate temperature control device.

4. The energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device according to claim 3, characterized in that, The number of electromagnetic heating devices is four, and the power of each electromagnetic heating device is 120KW.

5. The energy-saving and environmentally friendly potassium sulfate Mannheim furnace based on an electromagnetic heating device according to claim 1, characterized in that, The outer wall of the spiral wound tube is covered with an insulation layer.

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