Coal gas oil removing device

Abstract

The present application relates to coal gas purification equipment technical field, specifically for a coal gas oil removal device, including vertical body, the top of the body is equipped with coal gas inlet, the bottom is equipped with coal gas outlet, the upper part of the body is equipped with cyclone plate, and it is the first stage oil removal structure, the lower part of the cyclone plate is equipped with filler, and it is the second stage oil removal structure, the inside of the filler is equipped with fiber mist eliminator, and it is the third stage oil removal structure, the top of the coal gas outlet extends into the body, and the top end is equipped with cone top, and it is the fourth stage oil removal structure, which can effectively remove oil from desulfurized coal gas, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal gas purification equipment, in particular to a coal gas oil removal device. BACKGROUND

[0002] In the coking industry, vacuum carbonate desulfurization is one of the commonly used coal gas desulfurization methods. If too much washing oil is entrained in the coal gas, not only will it cause large washing oil consumption, but also the color of the circulating liquid will become black and the impurities will increase due to the presence of washing oil in the desulfurization circulating liquid, which can easily cause system equipment blockage and affect the desulfurization efficiency. The specific manifestations are as follows: (1) the mechanical seal of the desulfurization liquid conveying pump is frequently damaged and leaked due to the increase of solid slag in the desulfurization liquid; (2) the desulfurization tower has high operating resistance, and it is often found that the desulfurization tower filler and grid are covered with solid crystalline slag and block bonding during maintenance; (3) the pump body, separation tank and working liquid cooler of the vacuum pump are frequently blocked due to the enrichment and crystallization of oily substances.

[0003] At present, the main improvement measure is to add a washing tower in front of the desulfurization tower to wash and cool the desulfurization tower inlet coal gas with clean water to reduce the oil entrainment in the desulfurized coal gas, but the cost is high. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a coal gas oil removal device which can effectively remove oil from desulfurized coal gas and has low cost.

[0005] In order to achieve the above purpose, the following technical scheme is adopted in the present application:

[0006] A coal gas oil removal device, comprising a vertical body, the top of the body is provided with a coal gas inlet, and the bottom of the body is provided with a coal gas outlet; an upper part in the body is provided with a cyclone plate, which is a first stage oil removal structure; a lower part of the cyclone plate is provided with a filler, which is a second stage oil removal structure; the inside of the filler is provided with a fiber mist eliminator, which is a third stage oil removal structure; the top of the coal gas outlet extends into the body, and the top end is provided with a conical top, which is a fourth stage oil removal structure.

[0007] Further, the body comprises an upper conical section, a straight cylinder and a lower conical section connected in sequence from top to bottom.

[0008] Further, it further comprises a partition plate, an inner cylinder and an inner cylinder conical top; the partition plate is fixedly connected in the body, the inner cylinder is fixedly connected on the partition plate, and the inner cylinder conical top is fixedly connected on the top of the inner cylinder.

[0009] Further, the bottom of the inner cylinder is not perforated, and the rest is a perforated structure, the perforated diameter is smaller than the diameter of the filler, and the inner cylinder conical top is not perforated.

[0010] Further, the filler is porcelain filler or wreath filler, filled in the annular space formed by the inner cylinder outer wall, the body inner wall and the partition plate, and the filler layer height is higher than the inner cylinder height.

[0011] Further, the inner cylinder side wall is provided with a mounting port, and the fiber mist eliminator is mounted in the inner cylinder through the mounting port; the fiber mist eliminator is connected with the flange through bolts, the flange is connected with the cylinder segment, and the inner cylinder segment is welded to the inside of the flange and the cylinder segment, and is located in the fiber mist eliminator after installation.

[0012] Further, the first oil outlet, the second oil outlet, the third oil outlet and the oil seal groove are connected through pipelines; the first oil outlet is fixedly connected to the bottom of the body; the second oil outlet is fixedly connected to the bottom of the partition plate and located at the fiber mist eliminator; and the third oil outlet is fixedly connected to the bottom of the partition plate and located at the filler bottom.

[0013] Further, 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 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, and the full-flow port and the vent port are fixedly connected to the side wall of the groove body; the first oil outlet is connected with the first oil inlet through a pipeline, the second oil outlet is connected with the second oil inlet through a pipeline, and the third oil outlet is connected with the third oil inlet through a pipeline.

[0014] Further, the cyclone plate is a lower-rotation type cyclone plate.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The body is provided with a cyclone plate at the upper portion, the oil in the coal gas is gathered as large-particle oil, and collides with the inner wall of the body to remove the oil as the first-stage oil removal; the cyclone plate is provided with a filler below, the large-particle oil in the coal gas contacts with the filler, and the oil on the filler flows downward by gravity to remove the oil as the second-stage oil removal; the filler is provided with a fiber mist eliminator inside, most of the small-particle oil flows along the fiber mist eliminator by gravity to remove the oil as the third-stage oil removal; the coal gas outlet is extended into the body, and the top end is provided with a conical top, the coal gas passing through the fiber mist eliminator enters the lower buffer space, collides with the conical top, and part of the coal gas collides with the body, the coal gas direction is changed due to the extension of the coal gas outlet into the body, and the coal gas enters the coal gas outlet upward to remove part of the oil as the fourth-stage oil removal. The present application removes the oil in four stages, reduces the oil entrainment in the desulfurized coal gas, has good oil removal effect, and the oil content in the coal gas meets the desulfurization requirement.

[0017] 2, the inner cylinder body cone top is fixed at the top of the inner cylinder body, and the gas enters the filler along the inner cylinder body cone top after oil removal by the cyclone plate, can directly absorb the large particle washing oil captured by the cyclone plate, and avoids that the large particle washing oil after the cyclone plate enters the next stage, so that the oil removal is relatively complete.

[0018] 3, the gas outlet top of the coal gas extends into the body, and the top end is provided with a cone top, and the bottom of the body is a lower cone section. The gas enters the lower buffer space after passing through the fiber mist eliminator, impacts the cone top, part of the gas impacts the cone section, and also absorbs part of the washing oil.

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

[0020] Figure 1 It is a structural schematic diagram of the present application.

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

[0022] Figure 3 It is a schematic diagram of the inner cylinder section arrangement of the present application. Figure 1 Partial enlarged view.

[0023] In the figure: 1-gas inlet 2-upper cone section 3-straight cylinder 4-support ring 5-cyclone plate 6-inner cylinder body cone top 7-filler 8-inner cylinder 9-fiber mist eliminator 10-manhole 11-baffle 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-mounting port 21-inner cylinder section 22-support plate 23-cone top 31-first oil inlet 32-second oil inlet 33-third oil inlet 34-supplemental oil inlet 35-top cover 36-full flow port 37-groove body 38-vent port 39-bottom plate DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, in order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely, obviously, the described embodiments are only part of the embodiments of the present application, not all. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0025] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0026] In the description of the application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0027] In the description of the application, it needs to be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0028] Unless otherwise specifically stated, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the application. At the same time, it should be clear that the size of each part shown in the drawings is not drawn in proportion to the actual proportion relationship. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference 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 the terms "first", "second" and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0030] As Figures 1-3 shown, a coal gas oil removal device includes a coal gas inlet 1, an upper cone section 2, a straight cylinder 3, a support ring 4, a cyclone plate 5, an inner cylinder cone top 6, a filler 7, an inner cylinder 8, a fiber mist eliminator 9, a manhole 10, a partition plate 11, a lower cone section 12, a coal 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 the upper cone section 2, the straight cylinder 3, and the 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 fixedly connected to the top end and the bottom end of the straight cylinder 3. The coal gas inlet 1 is fixedly connected to the top of the upper cone section 2. The manhole 10 is fixedly connected to the straight cylinder 3.

[0032] The coal gas outlet 13 is fixedly connected to the bottom of the lower cone section 12 and extends into the lower cone section 12. The support plate 22 and the cone top 23 are welded to the top of the coal gas outlet 13, serving as the fourth-stage oil removal structure.

[0033] The cyclone plate 5 is fixedly connected in the straight cylinder 3 through the support ring 4 and is located at the upper part. The cyclone plate 5 adopts a lower-rotation type cyclone plate structure and serves as the first-stage oil removal structure for coal gas.

[0034] The partition plate 11 is fixedly connected horizontally to the inner wall of the straight cylinder 3. The inner cylinder 8 is fixedly connected to the center of the partition plate 11. The inner cylinder cone top 6 is fixedly connected to the top of the inner cylinder 8. The side wall of the inner cylinder 8 is fixedly connected to the mounting port 20.

[0035] The filler 7 can be porcelain filler or other fillers such as wreath filler and 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 plate 11. The height of the filler layer is higher than the height of the inner cylinder 8, serving as the second-stage oil removal structure for coal gas.

[0036] The bottom of the inner cylinder 8 is not perforated, and the rest is perforated structure. The diameter of the perforation is smaller than the diameter of the filler 7, serving as a coal gas passage. The bottom of the inner cylinder 8 is welded to the partition plate 11, and the top is welded to the inner cylinder cone top 6. The inner cylinder cone top 6 is not perforated.

[0037] The fiber mist eliminator 9 serves as the third-stage oil removal structure for coal gas. The fiber mist eliminator 9 is installed inside the inner cylinder 8 through the mounting port 20 and is connected to the flange 17 through bolts. After the flange 17 and the cylinder section 16 are welded, the inner cylinder section 21 is welded inside. The inner cylinder section 21 is located inside the fiber mist eliminator 9 and is used to discharge the washing oil flowing down from the upper part of the fiber mist eliminator 9. After the fiber mist eliminator 9 is installed, the washing oil is blocked from flowing to the outside and following the coal gas.

[0038] The first oil outlet 15 is fixed to the lower conical section 12, the second oil outlet 18 is fixed to the bottom of the partition plate 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 plate 11 and is located at the bottom of the filler 7.

[0039] The oil seal groove 14 comprises 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 port 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 with the first oil outlet 15 by a pipeline. The second oil inlet 32 is connected with the second oil outlet 18 by a pipeline, and the third oil inlet 33 is connected with the third oil outlet 19 by a pipeline. The full-flow port 36 and the vent port 38 are fixed to the groove body 37.

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

[0041] The coal gas enters the demister formed by the lower conical section 2 and the lower rotating cyclone plate 5 from the coal gas inlet 1, and the washing oil in the coal gas is gathered into large-particle washing oil, part of which directly rotates to the inner wall of the straight cylinder 3, and part of which hits the inner cylinder conical top 6 and also rotates to the inner wall of the straight cylinder 3, which is the first-stage oil removal structure.

[0042] All the coal gas enters the filler layer 7, the large-particle washing oil in the coal gas contacts the filler, the washing oil on the filler is absorbed, and the washing oil flows downward by gravity. The bottom of the inner cylinder 8 is not perforated, serving as a washing oil storage space. The washing oil is discharged into the oil seal groove 14 through the third oil outlet 19, and the coal gas enters the inner cylinder through the perforations of the inner cylinder 8, which is the second-stage oil removal structure.

[0043] The coal gas from which the large-particle washing oil is removed enters the fiber demister 9, and most of the small-particle washing oil is removed. The washing oil flows downward along the fiber demister by gravity. The inner cylinder segment 21 is welded inside the cylinder segment 16 to prevent the washing oil from entering the lower space with the coal gas. The washing oil is discharged into the oil seal groove 14 through the second oil outlet 18, which is the third-stage oil removal structure.

[0044] The coal gas passing through the fiber demister 9 enters the lower buffer space and hits the conical top 23. Part of the coal gas hits the conical section 12. Since the coal gas outlet 13 extends into the conical section 12, the direction of the coal gas changes, and the coal gas enters the coal gas outlet 13 upward, also removing part of the washing oil, which is discharged into the oil seal groove 14 through the first oil outlet 15, which is the fourth-stage oil removal structure.

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

[0046] The coal gas after oil removal by the cyclone plate enters the filler 7 along the inner cylinder cone top 6, can directly absorb the large particle washing oil collected by the cyclone plate, avoids the large particle washing oil after the cyclone plate into the next stage, and the oil removal is relatively thorough. The small particle washing oil in the coal gas is collected by the fiber mist eliminator 9. Most of the small particle washing oil is collected. The coal gas after the fiber mist eliminator 9 enters the lower buffer space, collides to the cone top 23, part of the coal gas collides to the cone section 12, and part of the washing oil is also absorbed. The oil removal device collects the washing oil, and discharges into the coal gas oil seal tank 14, which is safe and reliable.

[0047] The above is only part of the specific embodiments of the present application, the protection scope of the present application is not limited to this, any person skilled in the art in the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A coal gas oil removal device characterized in that: it comprises a vertical body, the top of which is provided with a coal gas inlet and the bottom of which is provided with a coal gas outlet; an upper cyclone plate is arranged in the body, which is a first-stage oil removal structure; a filler is arranged below the cyclone plate, which is a second-stage oil removal structure; a fiber mist eliminator is arranged in the filler, which is a third-stage oil removal structure; the coal gas outlet extends into the body and is provided with a conical top, which is a fourth-stage oil removal structure; the body comprises an upper conical section, a straight cylinder and a lower conical section which are sequentially connected from top to bottom; it further comprises a partition plate, an inner cylinder and an inner cylinder conical top, wherein the partition plate is fixedly connected to the body, the inner cylinder is fixedly connected to the partition plate, and the inner cylinder conical top is fixedly connected to the top of the inner cylinder; the bottom of the inner cylinder is not provided with an opening, and the rest is provided with an opening structure, the opening diameter is smaller than the diameter of the filler, and the inner cylinder conical top is not provided with an opening; the side wall of the inner cylinder is provided with a mounting port, and the fiber mist eliminator is mounted in the inner cylinder through the mounting port; the fiber mist eliminator is connected to a flange through bolts, the flange is connected to a cylinder segment, and the inner cylinder segment is welded to the inside of the flange and the cylinder segment and is located in the fiber mist eliminator after installation.

2. The coal gas oil removal device according to claim 1, characterized in that: the filler is a porcelain filler or a wreath filler, which is filled in an annular space formed by the outer wall of the inner cylinder, the inner wall of the body and the partition plate, and the height of the filler layer is higher than the height of the inner cylinder.

3. The coal gas oil removal device according to claim 1, characterized in that: it further comprises a first oil outlet, a second oil outlet, a third oil outlet and an oil seal tank, and the first oil outlet, the second oil outlet, the third oil outlet and the oil seal tank are connected by pipelines.

4. The coal gas oil removal device according to claim 3, characterized in that: the oil seal tank 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 tank body, a vent port and a bottom plate; the tank body is fixedly connected to the bottom plate, the top cover is fixedly connected 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 fixedly connected to the top cover and extend into the tank body, and the full-flow port and the vent port are fixedly connected to the side wall of the tank body; the first oil outlet is connected to the first oil inlet by a pipeline, the second oil outlet is connected to the second oil inlet by a pipeline, and the third oil outlet is connected to the third oil inlet by a pipeline.

5. The coal gas oil removal device according to claim 1, characterized in that: the cyclone plate is a lower cyclone plate. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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