Coal gas oil removal device

Abstract

The utility model relates to the technical field of coal gas purification equipment, in particular to a coal gas oil removal device. Comprising a vertical body, the top of the body is provided with a gas inlet, and the bottom is provided with a gas outlet; a rotational flow plate is arranged at the upper part in the body and is a first-stage oil removal structure; a filler is arranged below the rotational flow plate to form a second-stage oil removal structure; a fiber demister is arranged in the filler and is of a third-stage oil removal structure; the top of the coal gas outlet extends into the body, and a conical top is arranged at the top end of the coal gas outlet and is of a fourth-stage oil removal structure. The desulfurized coal gas can be effectively deoiled, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gas purification equipment, in particular to a coal gas oil removal device. Background Art

[0002] In the coking industry, vacuum carbonate desulfurization is one of the commonly used methods for coal gas desulfurization. If there is too much wash oil in the coal gas, not only will it cause a large amount of wash oil consumption, but the desulfurization circulating fluid will also contain wash oil, making the circulating fluid darker and increasing the amount of impurities, which can easily cause system equipment to clog and affect the desulfurization efficiency. Specifically, (1) due to the increase in solid slag in the desulfurization liquid, the mechanical seal of the desulfurization liquid delivery pump is frequently worn and damaged by solid crystals, resulting in leakage; (2) the desulfurization tower has high operating resistance, and during maintenance, it is often found that solid crystals are hanging on the desulfurization tower packing and grilles, forming blocks; (3) the vacuum pump body, separation tank and working fluid cooler are frequently clogged due to the enrichment and crystallization of oily substances.

[0003] At present, in addition to replacing the contaminated desulfurization liquid, the main improvement measure is to add a washing tower in front of the desulfurization tower to wash and cool the desulfurization tower inlet gas with clean water to reduce the entrainment of oil substances in the desulfurization gas, but the cost is relatively high. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a coal gas oil removal device, which can not only effectively remove oil from desulfurized coal gas but also has low cost.

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

[0006] A gas deoiling device comprises a vertical main body, wherein the top of the main body is provided with a gas inlet, and the bottom is provided with a gas outlet; a swirl plate is provided at the upper part of the main body, which is a first-stage deoiling structure; a filler is provided below the swirl plate, which is a second-stage deoiling structure; a fiber demister is provided inside the filler, which is a third-stage deoiling structure; the top of the gas outlet extends into the main body, and the top end is provided with a cone top, which is a fourth-stage deoiling structure.

[0007] Furthermore, the main body includes an upper cone section, a straight cylinder and a lower cone section which are sequentially connected from top to bottom.

[0008] Furthermore, it also includes a partition, an inner cylinder and a cone top of the inner cylinder; the partition is fixed to the body, the inner cylinder is fixed to the partition, and the cone top of the inner cylinder is fixed to the top of the inner cylinder.

[0009] Furthermore, the bottom of the inner cylinder has no opening, and the rest of the inner cylinder has an opening structure, the opening diameter is smaller than the filler diameter, and the cone top of the inner cylinder has no opening.

[0010] Furthermore, the filler is a porcelain filler or a rosette filler, which is filled in the annular space formed by the outer wall of the inner cylinder, the inner wall of the body and the partition, and the height of the filler layer is higher than the height of the inner cylinder.

[0011] Furthermore, the side wall of the inner cylinder is provided with an installation port, and the fiber demister is installed inside the inner cylinder through the installation port; the fiber demister is connected to the flange by bolts, the flange is connected to the cylinder section, and the inner cylinder section is welded to the flange and the inside of the cylinder section, and is located inside the fiber demister after installation.

[0012] Furthermore, it also includes a first oil outlet, a second oil outlet, a third oil outlet and an oil seal groove; the first oil outlet, the second oil outlet, and the third oil outlet are connected to the oil seal groove pipeline; the first oil outlet is fixed to the bottom of the main body; the second oil outlet is fixed to the bottom of the partition and is located at the fiber demister; the third oil outlet is fixed to the bottom of the partition and is located at the bottom of the packing.

[0013] Furthermore, the oil seal groove includes a first oil inlet, a second oil inlet, a third oil inlet, a supplementary oil inlet, a top cover, a full flow port, a groove body, a vent and a bottom plate; the groove body is fixed to the bottom plate, the top cover is fixed to the top of the groove body, the first oil inlet, the second oil inlet, the third oil inlet and the supplementary oil inlet are fixed to the top cover and extend into the groove body, the full flow port and the vent are fixed to the side wall of the groove body; the first oil outlet is connected to the first oil inlet pipe, the second oil outlet is connected to the second oil inlet pipe, and the third oil outlet is connected to the third oil inlet pipe.

[0014] Furthermore, the swirl plate is a downward swirl plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model has a swirl plate at the upper part of the main body, where the wash oil in the gas is aggregated into large particles that collide with the inner wall of the main body, representing the first stage of oil removal. A packing is provided below the swirl plate, where large particles of wash oil in the gas come into contact with the packing, absorbed by the packing and flowing downward by gravity, representing the second stage of oil removal. A fiber demister is provided inside the packing, where the wash oil, which has been removed from most small particles, flows downward by gravity along the fiber demister, representing the third stage of oil removal. The top of the gas outlet extends into the main body and is provided with a cone. Gas passing through the fiber demister enters the lower buffer space and collide with the cone. Part of the gas then collide with the main body. Since the gas outlet extends into the main body, the gas changes direction and enters the gas outlet upward, also removing some wash oil, representing the fourth stage of oil removal. This utility model provides four-stage oil removal, reducing the entrainment of oily substances in the desulfurized gas, achieving good deoiling effects, and ensuring that the oil content in the gas meets desulfurization requirements.

[0017] 2, The utility model discloses inner cylinder cone top is fixed to the inner cylinder top, and after the oil removal of gas through the cyclone plate, the gas enters the filler along the inner cylinder cone top, can directly absorb the large particle washing oil that cyclone plate has caught, avoids the large particle washing oil after cyclone plate into the next stage, and oil removal is relatively thorough.

[0018] 3, The utility model discloses that the coal gas outlet top stretches into the body, and the top is equipped with the cone top, and the body bottom is the lower cone section. After the fiber demister, the gas enters the lower buffer space, and the cone top is impacted, and part of the gas is impacted to the cone section, and also absorbs part of the washing oil.

[0019] 4, The utility model discloses first oil outlet, second oil outlet, third oil outlet and oil seal groove pipeline are connected. The safety is reliable to the coal gas oil seal groove. DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the utility model.

[0021] Figure 2 It is the inner cylinder bore of the utility model schematic diagram.

[0022] Figure 3 It is the inner cylinder section arrangement schematic diagram of the utility model (partial enlarged view). Figure 1

[0023] In the drawing: 1-coal gas inlet 2-upper cone section 3-straight cylinder 4-supporting ring 5-cyclone plate 6-inner cylinder cone top 7-filler 8-inner cylinder 9-fiber demister 10-manhole 11-baffle 12-lower cone section 13-coal gas outlet 14-oil seal groove 15-first oil outlet 16-cylinder section 17-flange 18-second oil outlet 19-third oil outlet 20-mounting port 21-inner cylinder section 22-supporting plate 23-cone top 31-first oil inlet 32-second oil inlet 33-third oil inlet 34-supplementary oil inlet 35-top cover 36-full flow port 37-groove body 38-emptying port 39-bottom plate DETAILED DESCRIPTION

[0024] The following will be described in detail the embodiment of the utility model, for making the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the following will combine the drawing in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. The following description of at least one exemplary embodiment is actually only illustrative, and by no means as any limitation on the utility model and its application or use. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection. ​

[0025] 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.

[0026] 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 a communication between the internal parts of two components.

[0027] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figure 1-3 As shown, a gas deoiling device includes a gas inlet 1, an upper cone section 2, a straight cylinder 3, a support ring 4, a swirl plate 5, a cone top 6 of an inner cylinder, a filler 7, an inner cylinder 8, a fiber demister 9, a manhole 10, a partition 11, a lower cone section 12, a gas outlet 13, an oil seal groove 14, a first oil outlet 15, a cylinder section 16, a flange 17, a second oil outlet 18, a third oil outlet 19, a mounting port 20, an inner cylinder section 21, a support plate 22 and a cone top 23.

[0032] The device is vertical and comprises an upper conical section 2, a straight cylindrical body 3, and a lower conical section 12. The straight cylindrical body 3 is vertically arranged, with the upper conical section 2 and the lower conical section 12 respectively fixed to the top and bottom of the straight cylindrical body 3. The gas inlet 1 is fixed to the top of the upper conical section 2. A manhole 10 is fixed to the straight cylindrical body 3.

[0033] The gas outlet 13 is fixed to the bottom of the lower cone section 12 and extends into the lower cone section 12. A support plate 22 and a cone top 23 are welded to the top of the gas outlet 13, forming a fourth-level oil removal structure.

[0034] The swirl plate 5 is fixedly connected to the straight cylinder 3 through the support ring 4 and is located at the upper part. The swirl plate 5 adopts a downward swirl plate structure and is the first-stage oil removal structure for coal gas.

[0035] The partition 11 is fixed horizontally to the inner wall of the straight cylinder 3 , the inner cylinder 8 is fixed to the center of the partition 11 , the inner cylinder cone 6 is fixed to the top of the inner cylinder 8 , and the side wall of the inner cylinder 8 is fixed to the installation opening 20 .

[0036] The filler 7 can be a porcelain filler or other fillers such as a rosette filler, which is filled in the annular space formed by the outer wall of the inner cylinder 8, the inner wall of the straight cylinder 3 and the partition 11. The height of the filler layer is higher than the height of the inner cylinder 8, which is the second-stage oil removal structure of the coal gas.

[0037] The bottom of the inner cylinder 8 is not perforated, and the rest of the structure is perforated. The diameter of the perforation is smaller than that of the filler 7 and serves as a gas passage. The bottom of the inner cylinder 8 is welded to the partition 11, and the top is welded to the inner cylinder cone 6. The inner cylinder cone 6 does not have a perforation.

[0038] The fiber demister 9 is a third-stage oil removal structure for coal gas. It is installed inside the inner cylinder 8 through the mounting port 20 and bolted to the flange 17. After the flange 17 is welded to the cylinder segment 16, an inner cylinder segment 21 is welded inside. This inner cylinder segment 21 is located inside the fiber demister 9 and is used to discharge the wash oil flowing down from the upper portion of the fiber demister 9. After the fiber demister 9 is installed, it blocks the wash oil from flowing to the outside and prevents it from escaping with the coal gas.

[0039] The first oil outlet 15 is fixed to the lower cone section 12 , the second oil outlet 18 is fixed to the bottom of the partition 11 and is located between the fiber demister 9 and the inner wall of the inner cylinder 8 , and the third oil outlet 19 is fixed to the bottom of the partition 11 and is located at the bottom of the packing 7 .

[0040] The oil seal tank 14 includes a first oil inlet 31, a second oil inlet 32, a third oil inlet 33, a supplemental oil inlet 34, a top cover 35, a full flow port 36, a tank body 37, a vent port 38, and a bottom plate 39. The bottom plate 39 is horizontal, and the tank body 37 is vertically mounted and fixed to the bottom plate 39. The top cover 35 is fixed to the top of the tank body 37. The first oil inlet 31, the second oil inlet 32, the third oil inlet 33, and the supplemental oil inlet 34 are fixed to the top cover 35 and extend into the tank body 37. The first oil inlet 31 is connected to the first oil outlet 15 through a pipeline. The second oil inlet 32 ​​is connected to the second oil outlet 18 through a pipeline, and the third oil inlet 33 is connected to the third oil outlet 19 through a pipeline. The full flow port 36 and the vent port 38 are fixed to the tank body 37.

[0041] The working principle and working process of this utility model are as follows:

[0042] The coal gas enters the demister composed of the downward rotating cyclone plate 5 along the upper cone section 2 from the coal gas inlet 1. The washing oil in the coal gas gathers into large particles of washing oil. Part of it rotates directly toward the inner wall of the straight cylinder 3, and part of it hits the cone top 6 of the inner cylinder and also rotates toward the inner wall of the straight cylinder 3. This is the first-stage oil removal structure.

[0043] All the coal gas enters the packing layer 7, and the large particles of washing oil in the coal gas come into contact with the packing. The washing oil absorbed by the packing flows downward by gravity. There is no hole at the bottom of the inner cylinder 8, which serves as a storage space for washing oil. The washing oil is discharged into the oil seal groove 14 through the third oil outlet 19, and the coal gas enters the interior of the inner cylinder through the opening of the inner cylinder 8. This is the second-stage oil removal structure.

[0044] The gas with large particles of wash oil removed enters the fiber demister 9, which removes most of the small particles of wash oil. The wash oil flows downward along the fiber demister by gravity. The inner cylinder section 21 is welded inside the cylinder section 16 to prevent the wash oil from entering the lower space with the gas. It is discharged into the oil seal groove 14 through the second oil outlet 18. This is the third-level oil removal structure.

[0045] The coal gas passing through the fiber demister 9 enters the lower buffer space and hits the cone top 23. Part of the coal gas hits the cone section 12. Since the coal gas outlet 13 extends into the interior of the cone section 12, the direction of the coal gas changes and enters the coal gas outlet 13 upward. Part of the wash oil is also removed and discharged into the oil seal groove 14 through the first oil outlet 15. This is the fourth-level oil removal structure.

[0046] After four-stage oil removal, the oil content in the gas meets the desulfurization requirements, and the gas enters the desulfurization tower for desulfurization operation.

[0047] After the coal gas passes through the swirl plate to remove oil, it flows along the inner cylinder cone apex 6 into the packing 7, which directly absorbs large wash oil particles captured by the swirl plate, preventing them from entering the next stage. This results in relatively complete oil removal. Small wash oil particles carried by the coal gas are mostly captured by the fiber demister 9. After passing through the fiber demister 9, the coal gas enters the lower buffer space, impacting the cone apex 23. Some of the coal gas impacts the cone section 12, also absorbing some wash oil. The oil drain collects the wash oil and discharges it into the coal gas oil seal tank 14, ensuring safety and reliability.

[0048] The above description is only part of the specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and the utility model concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A gas deoiling device, characterized by: It comprises a vertical body, wherein the top of the body is provided with a gas inlet, and the bottom of the body is provided with a gas outlet; The upper part of the main body is equipped with a swirl plate, which is the first-stage oil removal structure; A filler is provided below the swirl plate, which is a second-stage oil removal structure; A fiber demister is provided inside the packing, which is a third-level oil removal structure; The top of the gas outlet extends into the main body, and a cone top is provided on the top, which is the fourth-level oil removal structure.

2. A gas oil removal device according to claim 1, characterized in that: The main body comprises an upper cone section, a straight cylinder and a lower cone section which are sequentially connected from top to bottom.

3. The coal gas deoiling device according to claim 1, characterized in that: It also includes a partition, an inner cylinder and a cone top of the inner cylinder; the partition is fixedly connected to the body, the inner cylinder is fixedly connected to the partition, and the cone top of the inner cylinder is fixedly connected to the top of the inner cylinder.

4. The coal gas deoiling device according to claim 3, characterized in that: The bottom of the inner cylinder is not open, and the rest of the inner cylinder is an open hole structure. The diameter of the opening is smaller than the diameter of the filler. The cone top of the inner cylinder is not open.

5. The coal gas oil removal device according to claim 3, characterized in that: The filler is a porcelain filler or a rosette filler, which is filled in the annular space formed by the outer wall of the inner cylinder, the inner wall of the body and the partition, and the height of the filler layer is higher than the height of the inner cylinder.

6. The coal gas oil removal device according to claim 3, characterized in that: The side wall of the inner cylinder is provided with an installation opening, and the fiber mist eliminator is installed inside the inner cylinder through the installation opening; The fiber mist eliminator is connected to the flange through bolts, the flange is connected to the cylinder section, the inner cylinder section is welded to the flange and the inside of the cylinder section, and is located inside the fiber mist eliminator after installation.

7. The coal gas deoiling device according to claim 1, characterized in that: It also includes a first oil outlet, a second oil outlet, a third oil outlet and an oil seal groove; the first oil outlet, the second oil outlet, the third oil outlet and the oil seal groove pipeline are connected; The first oil outlet is fixed to the bottom of the body; the second oil outlet is fixed to the bottom of the partition and is located at the fiber demister; the third oil outlet is fixed to the bottom of the partition and is located at the bottom of the filler.

8. The coal gas oil removal device according to claim 7, characterized in that: The oil seal tank includes a first oil inlet, a second oil inlet, a third oil inlet, a supplementary oil inlet, a top cover, a full flow port, a tank body, a vent and a bottom plate; The tank body is fixed to the bottom plate, the top cover is fixed to the top of the tank body, the first oil inlet, the second oil inlet, the third oil inlet, and the supplementary oil inlet are fixed to the top cover and extend into the tank body, and the full flow port and the drain port are fixed to the side wall of the tank body; The first oil outlet is connected to the first oil inlet pipeline, the second oil outlet is connected to the second oil inlet pipeline, and the third oil outlet is connected to the third oil inlet pipeline.

9. The coal gas oil removal device according to claim 1, characterized in that: The swirl plate is a downward swirl plate.

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