Coal gas oil removal device

Abstract

The invention 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 invention 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, it will not only cause a large consumption of wash oil, but also the desulfurization circulating fluid will contain wash oil, which will make the circulating fluid black and increase the impurities, which will easily cause the system equipment to be blocked 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 crystalline substances, resulting in leakage; (2) The desulfurization tower has high operating resistance. During maintenance, it is often found that there are solid crystals hanging on the desulfurization tower packing and grid, and blocks are bonded; (3) The vacuum pump body, separation tank and working fluid cooler are frequently blocked 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 desulfurized gas, but the cost is relatively high. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention 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 object, the present invention adopts the following technical solutions:

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

[0007] Furthermore, the main body comprises 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 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.

[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 opening, and the fiber demister is installed inside the inner cylinder through the installation opening; the fiber demister is connected to the flange by 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 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 fixedly connected to the bottom of the main body; the second oil outlet is fixedly connected to the bottom of the partition and is located at the fiber demister; the third oil outlet is fixedly connected 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 drain port and a bottom plate; the groove body is fixedly connected to the bottom plate, the top cover is fixedly connected 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 fixedly connected to the top cover and extend into the groove body, the full flow port and the drain port are fixedly connected to the side wall of the groove 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.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A cyclone plate is provided at the upper part of the body of the present invention, and the washing oil in the coal gas gathers into large particles of washing oil, which hits the inner wall of the body, which is the first stage of oil removal; a filler is provided below the cyclone plate, and the large particles of washing oil in the coal gas contact the filler, and the washing oil absorbed on the filler flows downward by gravity, which is the second stage of oil removal; a fiber demister is provided inside the filler, and the washing oil that removes most of the small particles flows downward along the fiber demister by gravity, which is the third stage of oil removal; the top of the coal gas outlet extends into the body, and a cone top is provided at the top. The coal gas that passes through the fiber demister enters the lower buffer space and hits the cone top, and part of the coal gas hits the body. Since the coal gas outlet extends into the body, the direction of the coal gas changes and enters the coal gas outlet upward, and part of the washing oil is also removed, which is the fourth stage of oil removal. The present invention is a four-stage oil removal, which reduces the entrainment of oil substances in the desulfurized coal gas, has a good deoiling effect, and the oil content in the coal gas meets the desulfurization requirements.

[0017] 2. The cone top of the inner cylinder of the present invention is fixedly connected to the top of the inner cylinder. After the coal gas passes through the cyclone plate for oil removal, the coal gas enters the filler along the cone top of the inner cylinder, and can directly absorb the large particles of washed oil captured by the cyclone plate, thus preventing the large particles of washed oil after the cyclone plate from entering the next stage, and the oil removal is relatively thorough.

[0018] 3. The top of the gas outlet of the present invention extends into the body, with a cone top at the top and a lower cone section at the bottom of the body. After passing through the fiber demister, the gas enters the lower buffer space and hits the cone top. Part of the gas hits the cone section and also absorbs part of the wash oil.

[0019] 4. The first oil outlet, the second oil outlet and the third oil outlet of the present invention are connected to the oil seal groove pipeline and discharged into the gas oil seal groove, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the opening of the inner cylinder of the present invention.

[0022] Figure 3 Schematic diagram of the inner cylinder section arrangement of the present invention ( Figure 1 Partial enlarged image).

[0023] In the figure: 1-gas inlet 2-upper cone section 3-straight cylinder 4-support ring 5-swirl plate 6-cone top of inner cylinder 7-filler 8-inner cylinder 9-fiber demister 10-manhole 11-partition 12-lower cone section 13-gas outlet 14-oil seal groove 15-first oil outlet 16-cylinder section 17-flange 18-second oil outlet 19-third oil outlet 20-installation port 21-inner cylinder section 22-support 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-tank 38-venting port 39-bottom plate DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[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 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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, an inner cylinder cone top 6, 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.

[0031] The device body is vertical, including an upper cone section 2, a straight cylinder 3 and a lower cone section 12. The straight cylinder 3 is vertically arranged, and the upper cone section 2 and the lower cone section 12 are respectively fixed to the top and bottom of the straight cylinder 3. The gas inlet 1 is fixed to the top of the upper cone section 2. The manhole 10 is fixed to the straight cylinder 3.

[0032] The gas outlet 13 is fixedly connected 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.

[0033] 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.

[0034] The partition 11 is fixedly connected to the inner wall of the straight cylinder 3 horizontally, the inner cylinder 8 is fixedly connected to the center of the partition 11 , the inner cylinder cone 6 is fixedly connected to the top of the inner cylinder 8 , and the side wall of the inner cylinder 8 is fixedly connected to the installation opening 20 .

[0035] 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 coal gas.

[0036] The bottom of the inner cylinder 8 is not perforated, and the rest of the inner cylinder is perforated, and the diameter of the perforation is smaller than that of the filler 7, which is 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, which is not perforated.

[0037] The fiber demister 9 is a third-stage gas oil removal structure. The fiber demister 9 is installed inside the inner cylinder 8 through the installation port 20 and connected to the flange 17 by bolts. After the flange 17 and the cylinder segment 16 are welded, the inner cylinder segment 21 is welded inside. The inner cylinder segment 21 is located inside the fiber demister 9 and is used to discharge the wash oil flowing down from the upper part of the fiber demister 9. After the fiber demister 9 is installed, the wash oil is blocked from flowing to the outside and does not go with the gas.

[0038] 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 .

[0039] The oil seal groove 14 includes a first oil inlet 31, a second oil inlet 32, a third oil inlet 33, a supplementary oil inlet 34, a top cover 35, a full flow port 36, a groove body 37, a vent 38 and a bottom plate 39. The bottom plate 39 is a horizontal plate, the groove body 37 is vertically arranged and fixed to the bottom plate 39, and the top cover 35 is fixed to the top of the groove body 37. The first oil inlet 31, the second oil inlet 32, the third oil inlet 33 and the supplementary oil inlet 34 are fixed to the top cover 35 and extend into the groove body 37. The first oil inlet 31 is connected to the first oil outlet 15 by a pipeline. The second oil inlet 32 ​​is connected to the second oil outlet 18 by a pipeline, and the third oil inlet 33 is connected to the third oil outlet 19 by a pipeline. The full flow port 36 and the vent 38 are fixed to the groove body 37.

[0040] The working principle and working process of the present invention are as follows:

[0041] 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 which directly rotates 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.

[0042] 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 on 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.

[0043] The gas with large particles of wash oil removed enters the fiber demister 9 to remove 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. The wash oil is discharged into the oil seal groove 14 from the second oil outlet 18. This is the third-level oil removal structure.

[0044] 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 it enters the coal gas outlet 13 upward. Part of the wash oil is also removed and discharged into the oil seal groove 14 from the first oil outlet 15. This is the fourth-level oil removal structure.

[0045] After four-stage oil removal, the oil content in the coal gas meets the desulfurization requirements, and the coal gas enters the desulfurization tower for desulfurization operation.

[0046] After the coal gas of the present invention passes through the cyclone plate to remove oil, the coal gas enters the filler 7 along the cone top 6 of the inner cylinder, and can directly absorb the large particles of washed oil captured by the cyclone plate, thereby preventing the large particles of washed oil after the cyclone plate from entering the next stage, and the oil removal is relatively thorough. Most of the small particles of washed oil entrained in the coal gas are captured by the fiber demister 9. After passing through the fiber demister 9, the coal gas enters the lower buffer space and hits the cone top 23. Part of the coal gas hits the cone section 12 and also absorbs part of the washed oil. The oil discharge device collects the washed oil and discharges it into the coal gas oil seal groove 14, which is safe and reliable.

[0047] The above descriptions are only some 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 can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A gas oil removal device, characterized in that: 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 body is provided with a swirl plate, which is the first-stage oil removal structure; A filler is provided below the cyclone 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 arranged 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. A gas oil removal 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 main 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. A gas oil removal device according to claim 3, characterized in that: The bottom of the inner cylinder is not perforated, and the rest of the inner cylinder is a perforated structure, the diameter of the perforation is smaller than the diameter of the filler, and the cone top of the inner cylinder is not perforated.

5. A 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. A 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 demister is installed inside the inner cylinder through the installation opening; The fiber demister is connected to the flange by 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 demister after installation.

7. The coal gas oil removal 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 are connected to the oil seal groove pipeline; 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. A gas oil removal device according to claim 7, characterized in that: The oil seal groove comprises 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 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.

Images