Electrical tar precipitator insulating device without introducing nitrogen

Abstract

The utility model relates to the technical field of coal gas purification equipment, in particular to an electrical tar precipitator insulating 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 utility model relates to the technical field of coal gas purification equipment, specifically to an electric tar precipitator insulation device without nitrogen. BACKGROUND

[0002] In the coking industry, the coke oven raw gas contains a large amount of tar particles, which can cause blockage of the equipment of the subsequent coal gas purification device. At the same time, coal tar is a high-value by-product of coking. Therefore, 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 serves as an insulator, but also bears the weight of the upper and lower hangers and the corona electrode. The lower end directly contacts the gas in the electric tar precipitator to avoid impurities in the gas polluting the insulator and causing discharge. Therefore, the insulation box is usually connected to a nitrogen gas source to ensure that the gas cannot enter the bottom of the insulation box. On the one hand, the nitrogen gas mixed in the gas is not good for the composition of the gas, and the production and transportation of nitrogen gas is costly, especially for coking plants without nitrogen gas, the cost of producing nitrogen gas is even higher. On the other hand, nitrogen gas contains water, which may cause unstable voltage on site even after heating, frequent equipment jumping, and affect the stable operation of the equipment and the efficiency of tar removal. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides an electric tar precipitator insulation device without nitrogen, which ensures that the gas cannot enter the bottom of the insulation box without nitrogen.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electric tar precipitator insulation device without nitrogen, comprising a body, an upper hanger, a hanger rod, an umbrella-shaped cover, a cylinder, a spraying pipe, a connecting cylinder, and an insulation box. The connecting cylinder is fixedly connected to the top of the body and extends into the body at the bottom. 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 end of the hanger rod is fixedly connected to the inside of the insulation box, and the bottom end extends out of the umbrella-shaped cover. The upper hanger is fixedly connected to the bottom end of the hanger rod. The umbrella-shaped cover and the cylinder are made of insulating polytetrafluoroethylene, and the surface is modified to an oil-repellent structure or an oil-repellent coating. The oil-repellent structure or the oil-repellent coating is used to seal the lower part of the insulation device, so that the gas cannot enter, and at the same time, the insulation makes the insulation device not need nitrogen.

[0007] Further, the cylinder has flanges at both ends, the upper end is connected to the connecting cylinder by bolts, and the lower end is connected to the umbrella-shaped 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 circular ring is provided on the outer wall of the upper stud, and the nut, outer tongue stop washer and the circular 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 spraying 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 insulation box includes a box body, a porcelain post insulator, an electric heater and a sealing ring; the porcelain post insulator is located in the center of the box body, and the sealing ring is located on the outer wall of the porcelain post insulator, at the connection between the insulation 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 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.

[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 insulation device is not sealed and needs to be passed through nitrogen. Nitrogen is used to prevent the coal gas from diffusing into the insulation box. The top of the suspension rod of the utility model is fixedly connected to the insulation box, and the bottom extends from the umbrella cover. The umbrella cover and the cylinder are made of insulating polytetrafluoroethylene, and the surface is modified to an oleophobic structure or oleophobic coating. The suspension rod, umbrella cover, and cylinder form a closed space inside the coal gas, which seals the lower part of the insulation device so that the coal gas cannot enter and can also be insulated. The utility model does not need to pass nitrogen, which 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 utility model not only ensures insulation, but also prevents tar in the coal gas from being deposited in the insulation box, causing the porcelain bottle to burst, and increases the service life of the equipment.

[0018] 2. The lower part of the umbrella-shaped cover of the utility model is a hollow conical cylinder. The rising gas enters the conical cylinder and flows upward through deflection. Part of the tar is captured, reducing the amount of tar flowing through the cylinder.

[0019] 3. The spraying pipe of the utility model is an annular pipe with holes opened along the inner side of the ring. 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. The insulation box of the utility model is equipped with an electric heater to ensure the temperature inside the box and prevent condensation and cracking of the porcelain support insulators.

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

[0022] Figure 1 This is a schematic front view of the structure of the utility model.

[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 utility model.

[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 boom structure of the utility model.

[0027] Figure 6 This is a schematic front view of the spray pipe structure of the utility model.

[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 cross-sectional view.

[0030] Figure 9 It is a structural schematic diagram of the insulation box of the utility model.

[0031] In the figure: 1 - body 2 - upper hanger 3 - umbrella cover 4 - hanger 5 - cylinder 6 - spray pipe 7 - connecting cylinder 8 - insulation box 31 - flange 32 - tapered 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 post insulator 87 - electric heater 88 - sealing ring 89 - sealing seat 810 - pressure 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 conjunction 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 in no way 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 making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the 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, they indicate 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, the numerical expressions and the numerical values ​​described in these embodiments 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 techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

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

[0038] like Figure 1-9 As shown, an insulation device for an electric tar precipitator that does not require nitrogen gas is provided, comprising 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 insulation box 8.

[0039] The connecting tube 1 is fixed to the top head of the main body 1, and the bottom extends into the main body. A flange is provided on the top of the connecting tube 1.

[0040] The insulating box 8 comprises 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. 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 properly positioned, it is welded to the upper flange of the connecting cylinder 7 to ensure that the porcelain post insulator 86 is centered in the box body 82. After installation, the sealing ring 88 is placed in place and fastened with 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 maintains the internal temperature of the box body 82 to prevent condensation and cracking of the porcelain post insulator 86.

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

[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 umbrella-shaped cover 3 has a flange 31 at the top and a conical barrel 32 at the bottom. The flange 31 is a circular ring with bolt holes for bolting to the flange at the bottom of the barrel 5. A threaded hole in the center connects to the hanger rod 4. The conical barrel 32 is hollow. As the rising gas enters the conical barrel 32, it is deflected and flows upward, trapping some tar, thus reducing the amount of tar in the gas flowing through the barrel 5.

[0044] Hanger 4 comprises a nut 41, an outer tongue stop washer 42, an upper stud 43, a circular ring 44, a seamless steel pipe 45, and a lower stud 46. The circular ring 44 is welded to the upper stud 43 and, together with the nut 41 and outer tongue stop washer 42, forms a structure that prevents the hanger 3 from rotating. The seamless steel pipe 45 has holes at its upper and lower ends, which are plug-welded to the upper stud 43 and lower stud 46. The lower portion of the seamless steel pipe 45 is threaded and connected to the internal threads of the flange 31. The lower stud 46 is threadedly connected to the upper hanger 2, ensuring its insulation.

[0045] The spraying pipe 6 is an annular steel 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 5.

[0046] The suspension rod 4, the umbrella 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 installed on the top of the electric tar collector, one of which 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. Place the cylinder 5 and the umbrella cover 4 into the main body 1, and put the hanger 3 in from the top, and connect the umbrella cover 4 to the hanger 3. After the porcelain post insulator 86 is installed, put the sealing ring 88 in and fasten it with studs, nuts, and pressure plates 810. Install the support plate 6 on the top of the hanger 3 and fasten it with the outer tongue stop washer 42 and nut 41. Connect the lower part of the hanger 3 to the upper hanger 2, and adjust the upper hanger 2 to be level. Connect the cylinder 5 to the connecting cylinder 7 with bolts, rotate the umbrella cover 4 upward along the hanger 3 thread, and connect it to the lower end of the cylinder 5 and the umbrella cover 4 with bolts. Install the box 82, flange cover 83 and electric heater 87 in the insulation box 8.

[0049] The electric tar precipitator undergoes no-load test and is nitrogen sealed after passing the test, waiting for gas to be supplied for load operation. The utility model adopts a new structure, eliminating the insulation box to supply nitrogen, saving energy, ensuring gas purity, and ensuring stable operation of the equipment.

[0050] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of 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 that does not require nitrogen gas flow, 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 insulation box; The connecting tube is fixed to the top of the body, and the bottom extends into the body; the cylinder is fixed to the bottom of the connecting tube, and the umbrella cover is fixed to the bottom of the cylinder; the top of the suspension rod is fixed to the insulation box, and the bottom end extends from the umbrella cover, and the upper hanger is fixed 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 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 is not required.

2. The insulating device for an electric tar precipitator without nitrogen gas flow according to claim 1, characterized in that: Both 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 an electric tar precipitator without nitrogen gas flow according to claim 1, characterized in that: The upper part of the umbrella 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 an electric tar precipitator without nitrogen gas flow according to claim 1, characterized in that: The upper part of the boom is an upper stud, the lower part is a lower stud, and the middle part is a tube; a circular ring is provided on the outer wall of the upper stud, and the nut, outer tongue stop washer and the circular ring constitute a structure to prevent the boom 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 an electric tar precipitator without nitrogen gas flow according to claim 1, characterized in that: The spraying 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 deposited on the cylinder.

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

7. The insulating device for an electric tar precipitator without nitrogen gas flow 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 an electric tar precipitator without nitrogen gas flow 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 pressure plates.

9. The insulating device for an electric tar precipitator without nitrogen gas flow according to claim 1, characterized in that: The suspension rod, umbrella-shaped cover and cylinder 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.

10. The insulating device for an electric tar precipitator without nitrogen gas flow 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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