Electrical tar precipitator insulating device without introducing nitrogen

Abstract

The invention relates to the technical field of coal gas purification equipment, in particular to an electrical tar precipitator insulation device without introducing nitrogen. Comprising a body, an upper hanging bracket, a hanging rod, an umbrella-shaped cover, a cylinder body, a spraying pipe, a connecting cylinder and an insulating box, the connecting cylinder is fixedly connected to the top of the body, and the bottom extends into the body; the barrel is fixedly connected to the bottom of the connecting barrel; the umbrella-shaped cover is fixedly connected to the bottom of the barrel; the top end of the suspender is fixedly connected into the insulation box, and the bottom end of the suspender extends out of the umbrella-shaped cover; the umbrella-shaped cover and the cylinder body are made of insulating polytetrafluoroethylene, the surfaces of the umbrella-shaped cover and the cylinder body are modified into oleophobic structures or oleophobic coatings, and the umbrella-shaped cover and the cylinder body are used for sealing the lower portion of the insulating device so that coal gas cannot enter the insulating device and are insulated so that the insulating device does not need to be filled with nitrogen. Nitrogen is not introduced into an insulation box, so that energy is saved, gas purity is guaranteed, and stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of coal gas purification equipment, in particular to an insulating device for an electric tar precipitator without the need for nitrogen to be introduced. Background Art

[0002] In the coking industry, the raw gas from coke ovens contains a large amount of tar particles, which can clog the equipment of subsequent gas purification devices. At the same time, coal tar is also a high-value-added coking by-product. Therefore, the tar in the raw gas must be captured during the coking gas purification process.

[0003] In the traditional coking process, an electric tar precipitator is usually used to capture tar particles. The conventional electric tar precipitator insulation box not only has to play an insulating role, but also has to bear the weight of the upper and lower hangers and the corona electrode. The lower end is in direct contact with the coal gas in the electric tar precipitator. In order to prevent impurities in the coal gas from contaminating the insulator and causing discharge, the insulation box is usually passed with pressurized nitrogen to ensure that the coal gas cannot enter the bottom of the insulation box. On the one hand, nitrogen is mixed with the coal gas, and the coal gas composition is not good. The cost of nitrogen production and transportation is high, especially for coking plants without nitrogen. The cost of special nitrogen production is even higher. On the other hand, nitrogen contains water. Even if it is heated, it may cause unstable voltage on site and frequent equipment startup, affecting the stable operation of the equipment and the tar removal efficiency. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an insulating device for an electric tar precipitator without the need for nitrogen introduction, which ensures that coal gas cannot enter the bottom of the insulating box without the need for nitrogen introduction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An insulating device for an electric tar precipitator that does not require nitrogen to be introduced comprises a body, an upper hanger, a hanger rod, an umbrella-shaped cover, a cylinder, a spray pipe, a connecting cylinder and an insulating box; the connecting cylinder is fixedly connected to the top of the body, and the bottom thereof extends into the body; the cylinder is fixedly connected to the bottom of the connecting cylinder, and the umbrella-shaped cover is fixedly connected to the bottom of the cylinder; the top of the hanger rod is fixedly connected to the insulating box, and the bottom thereof extends out of the umbrella-shaped cover, and the upper hanger rod is fixedly connected to the bottom of the hanger rod; the umbrella-shaped cover and the cylinder are made of insulating polytetrafluoroethylene, and the surface is modified into an oleophobic structure or an oleophobic coating, and is used to seal the lower part of the insulating device so that coal gas cannot enter, and at the same time, the insulating device is insulated so that nitrogen does not need to be introduced.

[0007] Furthermore, both ends of the cylinder are flanges, the upper end is connected to the connecting cylinder by bolts, and the lower end is connected to the umbrella cover by bolts.

[0008] Furthermore, the upper part of the umbrella-shaped cover is a flange, and the lower part is a conical cylinder; the flange is a circular ring structure, which is bolted to the cylinder through bolt holes, and a threaded hole is provided in the center to be threadedly connected to the suspension rod; the conical cylinder is a hollow structure.

[0009] Furthermore, the upper part of the hanger is an upper stud, the lower part is a lower stud, and the middle part is a tube; a ring is provided on the outer wall of the upper stud, and the nut, outer tongue stop washer and the ring constitute a structure to prevent the hanger from rotating; the lower stud is threadedly connected to the umbrella cover, and the lower stud is threadedly connected to the upper hanger.

[0010] Furthermore, the spray pipe is an annular pipe with holes opened along the inner side of the ring. The medium in the pipe is residual ammonia water, and ammonia water is sprayed regularly to remove impurities such as tar deposited on the cylinder.

[0011] Furthermore, the insulating box includes a box body, a porcelain post insulator, an electric heater and a sealing ring; the porcelain post insulator is located at the center of the box body, and the sealing ring is located on the outer wall of the porcelain post insulator, located at the connection between the insulating box and the connecting tube; the electric heater ensures the temperature inside the box to prevent condensation and cracking of the porcelain post insulator.

[0012] Furthermore, a flange is provided at the bottom of the box body, and the box body is connected to the connecting tube via the flange.

[0013] Furthermore, it also includes a sealing seat, which is fixed to the top of the connecting tube. The sealing ring is installed in the sealing seat and fastened by studs, nuts and pressure plates.

[0014] Furthermore, the suspension rod, umbrella-shaped cover and cylinder form a closed space inside the coal gas, which prevents the coal gas from diffusing into the interior and causing tar to be deposited inside the porcelain post insulator, thereby affecting the insulation performance.

[0015] Furthermore, there are three or four insulating devices, which are arranged on the top of the electric tar collector, and one of them is connected to the feeder box to play a conductive role.

[0016] Compared with the prior art, the present invention has at least the following technical effects or advantages:

[0017] 1. The existing insulating device is not sealed and needs to be passed through nitrogen. The nitrogen is used to hold up the coal gas and prevent it from diffusing into the insulating box. The top of the suspension rod of the present invention is fixedly connected to the insulating box, and the bottom extends from the umbrella-shaped cover. The umbrella-shaped cover and the cylinder are made of insulating polytetrafluoroethylene, and the surface is modified to an oleophobic structure or oleophobic coating. The suspension rod, the umbrella-shaped cover, and the cylinder form a closed space inside the coal gas, which seals the lower part of the insulating device so that the coal gas cannot enter, and at the same time can be insulated. The present invention does not need to pass nitrogen, saves nitrogen, reduces production costs, ensures the purity of the coal gas, makes the coal gas high in purity, is conducive to stable operation of the equipment, and improves the tar removal efficiency. The present invention not only ensures insulation, but also prevents tar in the coal gas from being deposited in the insulating box, causing the porcelain bottle to burst, and improves the service life of the equipment.

[0018] 2. The lower part of the umbrella-shaped cover of the present invention is a hollow conical cylinder. The rising gas enters the conical cylinder and flows upward after being deflected. Part of the tar is captured, thereby reducing the amount of tar flowing through the cylinder.

[0019] 3. The spray pipe of the present invention is an annular pipe with holes opened along the inner side of the annular pipe. The medium in the pipe is residual ammonia water. Ammonia water is sprayed regularly to remove impurities such as tar deposited on the cylinder and extend the service life.

[0020] 4. An electric heater is provided in the insulation box of the present invention to ensure the temperature inside the box and prevent condensation and cracking of the porcelain support insulators.

[0021] 5. The lower stud of the hanger rod of the present invention is connected to the upper hanger through a thread, thereby ensuring the insulation effect of the upper hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic front view of the structure of the present invention.

[0023] Figure 2 yes Figure 1 A partial enlarged view of .

[0024] Figure 3 It is a schematic front view of the umbrella cover structure of the present invention.

[0025] Figure 4 It is a schematic top view of the umbrella cover structure of the present invention.

[0026] Figure 5 It is a schematic front view of the suspension rod structure of the present invention.

[0027] Figure 6 It is a schematic front view of the spray pipe structure of the present invention.

[0028] Figure 7 It is a schematic top view of the spray pipe structure of the present invention.

[0029] Figure 8 yes Figure 7 AA section view.

[0030] Fig. 9 It is a schematic diagram of the structure of the insulation box of the present invention.

[0031] In the figure: 1-body 2-upper hanger 3-umbrella cover 4-hanging rod 5-cylinder 6-spraying pipe 7-connecting tube 8-insulating box 31-flange 32-conical cylinder 41-nut 42-outer tongue stop washer 43-upper stud 44-ring 45-seamless steel pipe 46-lower stud 81-flange 82-box 83-flange cover 84-vent 85-support plate 86-porcelain support insulator 87-electric heater 88-sealing ring 89-sealing seat 810-pressing plate DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description of the present invention, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0038] like Figure 1-9 As shown, an insulating device for an electric tar precipitator without the need for nitrogen introduction comprises a main body 1, an upper hanger 2, a hanger rod 4, an umbrella cover 3, a cylinder 5, a spray pipe 6, a connecting cylinder 7 and an insulating box 8.

[0039] The connecting tube 1 is fixedly connected to the top end cap of the main body 1 , and the bottom thereof extends into the main body. A flange is arranged on the top of the connecting tube 1 .

[0040] The insulating box 8 includes a flange 81, a box body 82, a flange cover 83, a vent 84, a support plate 85, a porcelain post insulator 86, an electric heater 87, a pressure plate 810, a sealing ring 88 and a sealing seat 89. The flange 81 is fixed to the bottom of the box body 82, the flange cover 83 is fixed to the top of the box body 82, and the vent 84 is fixed to the center of the flange cover 83. After the sealing seat 89 is adjusted to the position, it is welded to the upper flange of the connecting cylinder 7 to ensure that the porcelain post insulator 86 is located in the center of the box body 82. After installation, the sealing ring 88 is placed and fastened by the pressure plate 810, studs and nuts. The support plate 85 is fixed to the top of the porcelain post insulator 7. The electric heater 87 ensures the temperature inside the box body 82 to prevent the porcelain post insulator 86 from condensing and bursting.

[0041] The umbrella-shaped cover 3 and the cylinder 5 are made of insulating polytetrafluoroethylene, and the surface is modified into an oleophobic structure or an oleophobic coating, which is used to seal the lower part of the insulating device to prevent gas from entering, and at the same time insulate the insulating device so that nitrogen does not need to be passed through it.

[0042] Both ends of the cylinder 5 are flanges, the upper end is connected to the connecting cylinder 7 by bolts, and the lower end is connected to the umbrella cover 3 by bolts.

[0043] The upper part of the umbrella-shaped cover 3 is a flange 31, and the lower part is a conical cylinder 32. The flange 31 is a circular ring structure, with bolt holes, through which it is bolted to the flange at the lower end of the cylinder 5, and the center is provided with a threaded hole to be threadedly connected to the suspension rod 4. The conical cylinder 32 is a hollow structure, and the rising gas enters the conical cylinder 32 and flows upward through the deflection, and part of the tar is captured, reducing the amount of tar in the gas flowing through the cylinder 5.

[0044] The suspension rod 4 includes a nut 41, an outer tongue stop washer 42, an upper stud 43, a ring 44, a seamless steel pipe 45, and a lower stud 46. The ring 44 is welded to the upper stud 43, and together with the nut 41 and the outer tongue stop washer 42, forms a structure to prevent the suspension rod 3 from rotating. The seamless steel pipe 45 has holes at the upper and lower ends, and is plug-welded with the upper stud 43 and the lower stud 46. The lower part of the seamless steel pipe 45 is processed into a thread, which is connected to the internal thread of the flange 31. The lower stud 46 is connected to the upper hanger 2 through a thread to ensure the insulation effect of the upper hanger 2.

[0045] The spray pipe 6 is an annular steel pipe with holes opened along the inner side of the annular shape. The medium in the pipe is residual ammonia water, and ammonia water is sprayed regularly to remove impurities such as tar deposited on the cylinder 5.

[0046] The suspension rod 4, the umbrella-shaped cover 3 and the cylinder 5 form a closed space inside the gas, which prevents the gas from diffusing into the interior and causing tar to be deposited inside the porcelain post insulator, thereby affecting the insulation performance.

[0047] There are three or four insulating devices, which are arranged on the top of the electric tar collector, and one of them is connected to the feeder box to play a conductive role.

[0048] During installation, adjust the position of the sealing seat 89 inside the insulation box 8 and weld it to the upper flange of the connecting cylinder 7 to ensure that the porcelain post insulator 86 is located in the center of the box 82. The cylinder 5 and the umbrella cover 4 are placed in the main body 1, and the suspension rod 3 is placed from the top, and the umbrella cover 4 is connected to the suspension rod 3. After the porcelain post insulator 86 is installed, the sealing ring 88 is placed and fastened with studs, nuts, and pressure plates 810. The support plate 6 is installed on the upper part of the suspension rod 3 and fastened with an outer tongue stop washer 42 and a nut 41. The lower part of the suspension rod 3 is connected to the upper hanger 2, and the upper hanger 2 is adjusted to be horizontal. The cylinder 5 is connected to the connecting cylinder 7 by bolts, and the umbrella cover 4 is rotated upward along the thread of the suspension rod 3, and is connected to the lower end of the cylinder 5 and the umbrella cover 4 by bolts. The insulation box 8 is installed with the box 82, the flange cover 83 and the electric heater 87.

[0049] The electric tar collector is tested without load, and after reaching the standard, it is nitrogen sealed and waits for gas to be supplied for load operation. The present invention adopts a new structure, eliminates the nitrogen supply of the insulation box, saves energy, ensures the purity of the gas, and ensures the stable operation of the equipment.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insulation device for an electric tar precipitator without nitrogen, characterized in that: It includes a main body, an upper hanger, a hanger rod, an umbrella cover, a cylinder, a spray pipe, a connecting tube and an insulating box; The connecting tube is fixedly connected to the top of the body, and the bottom extends into the body; the cylinder is fixedly connected to the bottom of the connecting tube, and the umbrella-shaped cover is fixedly connected to the bottom of the cylinder; the top of the suspension rod is fixedly connected to the insulation box, and the bottom end extends out of the umbrella-shaped cover, and the upper hanger is fixedly connected to the bottom end of the suspension rod; The umbrella-shaped cover and the cylinder are made of insulating polytetrafluoroethylene, and the surface is modified into an oleophobic structure or an oleophobic coating, which is used to seal the lower part of the insulating device to prevent gas from entering, and at the same time insulate the insulating device so that nitrogen does not need to be passed through it.

2. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The two ends of the cylinder are flanges, the upper end is connected to the connecting cylinder through bolts, and the lower end is connected to the umbrella cover through bolts.

3. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The upper part of the umbrella-shaped cover is a flange, and the lower part is a conical cylinder; the flange is a circular ring structure, which is bolted to the cylinder through bolt holes, and a threaded hole is provided in the center to be threadedly connected to the suspension rod; the conical cylinder is a hollow structure.

4. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The upper part of the suspension rod is an upper stud, the lower part is a lower stud, and the middle part is a tube; a circular ring is arranged on the outer wall of the upper stud, and a nut, an outer tongue stop washer and the circular ring constitute a structure for preventing the suspension rod from rotating; the lower stud is threadedly connected to the umbrella cover, and the lower stud is threadedly connected to the upper hanger.

5. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The spray pipe is an annular pipe with holes opened along the inner side of the annular pipe. The medium in the pipe is residual ammonia water. Ammonia water is sprayed regularly to remove impurities deposited on the cylinder.

6. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The insulating box comprises a box body, a porcelain post insulator, an electric heater and a sealing ring; the porcelain post insulator is located at the center of the box body, the sealing ring is located on the outer wall of the porcelain post insulator, and is located at the connection between the insulating box and the connecting tube; the electric heater ensures the temperature inside the box body to prevent the porcelain post insulator from condensing and cracking.

7. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 6, characterized in that: The bottom of the box body is provided with a flange, and the box body is connected to the connecting cylinder through the flange.

8. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 6, characterized in that: It also includes a sealing seat, which is fixed to the top of the connecting tube. The sealing ring is installed in the sealing seat and is fastened by studs, nuts and a pressure plate.

9. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: The suspension rod, umbrella-shaped cover and cylinder form a closed space inside the coal gas, which prevents the coal gas from diffusing into the interior and causing tar to be deposited inside the porcelain post insulator, thereby affecting the insulation performance.

10. The insulating device for electric tar precipitator without nitrogen gas introduction according to claim 1, characterized in that: There are three or four insulating devices, which are arranged on the top of the electric tar collector, and one of them is connected to the feeder box to play a conductive role.

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