Slurry discharging equipment with purging device and polymerization reactor
By introducing a slurry discharge device with a purging mechanism into the polymerization reactor, and utilizing the design of flanges and ball valves, the problems of dead zones and easy damage to plunger valves in the polymerization reactor were solved, achieving high-efficiency production and low-cost maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2026-03-10
AI Technical Summary
Existing polymerization reactors suffer from dead zones and the plunger valves are difficult to manufacture and prone to damage, which affects production efficiency and maintenance costs.
The slurry discharge equipment with a purging device is adopted, including a flange, a ball valve and a purging channel. By opening a purging channel and purging pipeline on the flange, the inside of the polymerization reactor is purged to eliminate dead zones, and a ball valve is used to replace the plunger valve.
It effectively eliminates dead zones in the polymerization reactor, improves production efficiency, reduces maintenance costs, extends the service life of ball valves, and is suitable for flow and pressure control under complex operating conditions.
Smart Images
Figure CN121623672A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of reactor technology, and particularly relates to a slurry discharge device with a purging device. In addition, the present application also relates to a polymerization reactor comprising the slurry discharge device. BACKGROUND
[0002] A polymerization reactor is a device for realizing a high molecular synthesis reaction, which converts small molecular monomers into high molecular polymers through a polymerization reaction. The slurry in the polymerization reactor has a large viscosity, and dead zones in the polymerization reactor should be avoided as much as possible. As shown in FIG. 1, the bottom of the polymerization reactor in the prior art is provided with a slurry discharge port and a plunger valve. The plunger valve is connected with a lower head of the polymerization reactor, and the slurry discharge port is connected with the plunger valve. In order to avoid dead zones as much as possible, the top surface of the plunger valve must be flush with the inner surface of the lower head of the polymerization reactor, and the slurry discharge port needs to be connected with the side surface of the plunger valve and has a certain angle with the vertically arranged plunger valve, that is, the connection between the slurry discharge port and the plunger valve is an eccentric pipe port. Figure 1
[0003] However, the foregoing slurry discharge port and plunger valve have three problems in actual application: first, in order to be flush with the inner surface of the lower head of the polymerization reactor, the top surface of the plunger valve needs to be processed into a special-shaped surface, which is difficult to produce and manufacture. Second, slurry is prone to accumulate at the end of the plunger valve, and dead zones cannot be fundamentally eliminated. Third, the plunger valve has certain requirements for the pipeline layout and process parameters, so the valve rod of the plunger valve is prone to be damaged in actual projects, and needs to be frequently repaired or even replaced, which affects the production efficiency and increases the maintenance cost.
[0004] In view of this, a slurry discharge device is developed, which can fundamentally eliminate dead zones in the polymerization reactor and solve the problems of difficult processing and easy damage of the plunger valve, which is a problem to be solved by those skilled in the art. SUMMARY
[0005] The present application aims to solve the problems existing in the prior art, and provides a slurry discharge device with a purging device and a polymerization reactor.
[0006] One of the purposes of the present application is to provide a slurry discharge device with a purging device, which comprises:
[0007] A flange is provided with a flange port; the axis of the flange port is perpendicular to the horizontal plane; a purging channel is formed in the flange, and the purging channel penetrates the inner side surface and the outer side surface of the flange;
[0008] A ball valve is connected with the bottom surface of the flange; the ball valve is provided with a ball valve inlet and a ball valve outlet; the ball valve inlet is in communication with the flange;
[0009] A discharge pipe is arranged below the ball valve and is in communication with the outlet of the ball valve.
[0010] A purging device is provided with at least one purging pipeline; the at least one purging pipeline is connected with the purging channel.
[0011] In a preferred embodiment of the present application, the included angle between the purging channel and the horizontal plane is 5-10°. More preferably, the purging channel is provided with a purging inlet and a purging outlet, and the height of the purging outlet in the vertical direction is greater than the height of the purging inlet in the vertical direction.
[0012] In a preferred embodiment of the present application, a pair of purging channels is arranged on the flange, and the pair of purging channels comprises two oppositely and parallelly arranged purging channels.
[0013] In a preferred embodiment of the present application, the number of the purging channels is multiple pairs; more preferably, the multiple pairs of purging channels are preferably arranged at equal intervals.
[0014] In a preferred embodiment of the present application, the flange is detachably connected with the ball valve.
[0015] In a preferred embodiment of the present application, the axis of the discharge pipe is perpendicular to the horizontal plane.
[0016] In a preferred embodiment of the present application, the discharge pipe is detachably connected with the ball valve.
[0017] In a preferred embodiment of the present application, the purging device is further provided with a third purging pipeline, which is arranged on the side of the ball valve and is in communication with the ball valve.
[0018] In a preferred embodiment of the present application,
[0019] The included angle between the third purging pipeline and the horizontal plane is 5-10°; and / or
[0020] The number of the third purging pipelines is multiple.
[0021] The second object of the present application is to provide a polymerization reactor comprising a polymerization reactor body and the slurry discharge equipment with purging device according to the first object of the present application; the slurry discharge equipment with purging device is arranged below the polymerization reactor body, and is connected with the polymerization reactor body.
[0022] Compared with the prior art, the present application has the following beneficial effects:
[0023] 1. The slurry discharge equipment with purging device of the present application can purge the inside of the polymerization reactor by opening purging channels in the flange flange, and can avoid dead zones as much as possible.
[0024] 2. The slurry discharge equipment with purging device of the present application can achieve better purging effect and fundamentally eliminate dead zones by opening at least one pair of parallel purging channels in the flange flange, and the included angle between the purging channel and the horizontal plane is an acute angle.
[0025] 3. The slurry discharge equipment with purging device of the present application uses a ball valve instead of the plunger valve in the prior art. Due to the arrangement of the purging channel, the ball valve does not need to be arranged flush with the inner surface of the lower head of the polymerization reactor, avoiding the problem that the top surface of the plunger valve needs to be processed into a special-shaped surface in the prior art.
[0026] 4. The slurry discharge equipment with purging device of the present application uses a ball valve instead of the plunger valve in the prior art. The ball valve has simple structure, long service life, and is easy to maintain and maintain, which can fundamentally solve the problem that the plunger valve rod is easily damaged, and can improve production efficiency and reduce maintenance cost.
[0027] 5. The slurry discharge equipment with purging device of the present application uses a ball valve instead of the plunger valve in the prior art. The ball valve is flexible to operate, and is quickly opened and closed, which is more convenient for controlling flow and pressure, and is suitable for reaction systems with complex working conditions.
[0028] 6. The slurry discharge equipment with purging device of the present application solves the problem that the discharge pipe must be inclined in the prior art, and can no longer limit the angle setting of the discharge pipe, so that the discharge pipe can be vertically downward, and the pipeline layout is optimized. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 is a front view of the slurry discharge equipment in the prior art;
[0030] Figure 2 is a front view of the slurry discharge equipment with purging device of the present application;
[0031] In the figure, 1 is a flange flange, 11 is a first purging channel, 12 is a second purging channel, and 13 is a flange opening; 2 is a ball valve; 3 is a discharge pipe; 41 is a first purging pipeline, and 42 is a second purging pipeline. DETAILED DESCRIPTION
[0032] The present application will be further described in detail below with reference to the accompanying drawings:
[0033] As Figure 2As shown, this invention provides a slurry discharge device with a purging apparatus, including a flange 1, a ball valve 2, a discharge pipe 3, and a purging apparatus. Specifically, the flange 1 is located below the lower head of the polymerization reactor, and the axis of the flange port 13 in the flange 1 is perpendicular to the horizontal plane. The top surface of the flange 1 is connected to the lower head of the polymerization reactor, and the bottom surface of the flange 1 is connected to the ball valve 2. The flange port 13 of the flange 1 communicates upward with the polymerization reactor and downward with the ball valve 2. In this embodiment, the top surface of the flange 1 is directly welded to the lower part of the polymerization reactor.
[0034] Ball valve 2 has a valve stem, a ball valve inlet, and a ball valve outlet. The valve stem is parallel to the horizontal plane, and the ball valve outlet is located directly below the ball valve inlet. Therefore, in this specific embodiment, the bottom surface of the flange 1 is connected to the ball valve inlet of ball valve 2.
[0035] In a preferred embodiment of the present invention, the flange 1 and the ball valve 2 are detachably connected to facilitate the replacement of the ball valve 2. For example, the flange 1 has multiple threaded holes on its flange, and the connecting surface extending outward from the ball valve inlet also has multiple threaded holes, allowing the flange 1 and the ball valve 2 to be connected together using a screw. This is merely an illustrative example and does not constitute a limitation on the connection method between the flange 1 and the ball valve 2.
[0036] A discharge pipe 3 is provided below the ball valve 2, and this discharge pipe 3 is connected to the ball valve outlet of the ball valve 2. When the valve stem in the ball valve 2 rotates to a certain angle, the discharge pipe 3 connects upwards sequentially to the ball valve 2, the flange port 13 of the flange 1, and the polymerization reactor to realize the discharge of slurry. Preferably, the axis of the discharge pipe 3 is perpendicular to the horizontal plane to further facilitate the discharge of slurry. More preferably, the discharge pipe 3 and the ball valve 2 are detachably connected. For the detachable connection between the two, the detachable connection method of the pipe and the ball valve in the prior art can be used, which will not be described in detail here.
[0037] The purging device has at least one purging line located below the lower head of the polymerization reactor. A purging channel is provided on the flange 1, extending through both the inner and outer sides of the flange 1. One end of the purging channel (referred to as the purging inlet) is connected to one of the purging lines of the purging device, and the other end (referred to as the purging outlet) is connected to the flange opening 13 of the flange 1. When the purging device is started, gas continuously purges the flange opening 13 through the purging channel, preventing the accumulation of viscous slurry at the flange opening 13. Preferably, the purging line is located on the side of the purging channel.
[0038] In a preferred embodiment of the present invention, the angle between the purging channel and the horizontal plane is 5-10°. More preferably, the vertical height of the purging outlet in the purging channel is greater than the vertical height of the purging inlet in the purging channel, to further prevent the accumulation of viscous slurry in the flange 13 and the lower head of the polymerization reactor. When the purging device is started, gas continuously purges the flange 13 and the polymerization reactor through the purging channel, thus further preventing the accumulation of viscous slurry in the flange 13 and the lower head of the polymerization reactor.
[0039] In a preferred embodiment of the invention, the number of purge channels is at least one pair, which are preferably arranged at equal intervals. Here, "one pair of purge channels" includes two purge channels arranged opposite and parallel to each other, so as to minimize the occurrence of dead zones within the polymerization reactor. More preferably, the angle between the two purge channels in each pair and the horizontal plane is 5–10° to completely eliminate dead zones within the polymerization reactor.
[0040] The following will provide an illustrative example of the angle settings for the two purge channels in each pair of purge channels. For example... Figure 2 As shown, two purge channels are provided on the flange 1, referred to as the first purge channel 11 and the second purge channel 12, respectively. The first purge channel 11 is located on the left side of the flange opening 13, and the second purge channel 12 is located on the right side of the flange opening 13. The first purge channel 11 is connected to the first purge pipe 41 in the purge device, and the second purge channel 12 is connected to the second purge pipe 42 in the purge device. The aforementioned purge pipes are located on the side of the purge channels; specifically in this embodiment (e.g.) Figure 2 The first purge pipe 41 is located on the left side of the first purge channel 11, and the second purge pipe 42 is located on the right side of the second purge channel 12.
[0041] Figure 2 In the first purge channel 11, the vertical height of the purge outlet is less than the vertical height of the purge inlet, meaning the first purge channel 11 is inclined downwards. Conversely, the vertical height of the purge outlet in the second purge channel 12 is greater than the vertical height of the purge inlet, meaning the second purge channel 12 is inclined upwards. At this point, the first and second purge channels 11 and 12 still satisfy the condition of being parallel. When the purge device is started, gas continuously purges the flange 13 and the top surface of the ball valve 2 through the first purge channel 11, and continuously purges the flange 13 and the polymerization reactor through the second purge channel 12. This further prevents the accumulation of highly viscous slurry on the flange 13, the lower end cap of the polymerization reactor, and the top surface of the ball valve 2.
[0042] Specifically, in this embodiment, the angle between the first purging channel 11 and the horizontal plane is 10°, and the angle between the second purging channel 12 and the horizontal plane is also 10°. However, this is only an illustrative example and does not constitute a limitation on the angle between the purging channel and the horizontal plane. In actual applications, the angle between the purging channel and the horizontal plane can be adjusted. When the purging channel is set at a certain angle to the horizontal plane, continuous up and down purging can be achieved, thereby completely eliminating the dead zone in the polymerization reactor.
[0043] It should be noted that the first purge channel 11 and the second purge channel 12 are merely illustrative examples of "a pair of purge channels". Those skilled in the art can create multiple pairs of purge channels on the flange 1 according to actual operating conditions to further eliminate dead zones within the polymerization reactor.
[0044] In a preferred embodiment of the present invention, the purging device is further provided with a third purging pipeline, which is located on the side of the ball valve 2 and communicates with the ball valve 2. When the purging device is started, gas is purged through the third purging pipeline to purge the interior of the ball valve 2, which can simultaneously prevent the accumulation of viscous slurry in the ball valve 2 and the discharge pipe 3.
[0045] In a preferred embodiment of the present invention, there are multiple third purge lines, and the angle between each third purge line and the horizontal plane is 5-10° to completely eliminate slurry in all directions within the ball valve 2, thereby extending the service life of the ball valve 2. Preferably, there is at least one pair of third purge lines, which are preferably arranged at equal intervals. Here, "one pair of third purge lines" includes two third purge lines arranged opposite to each other and parallel to minimize dead zones within the ball valve 2. More preferably, the angle between the two purge channels in each pair and the horizontal plane is 5-10° to completely eliminate dead zones within the polymerization reactor.
[0046] It should be noted that the purging device can utilize gas from the polymerization reaction system. For example, if the polymerization reaction system originally has a high-pressure hexane gas pipeline, this high-pressure hexane gas pipeline can be connected to the purging pipeline on the purging device. A gas delivery pump and a main shut-off valve are installed on the connecting pipeline. By controlling the gas delivery pump and the shut-off valve, the gas in the high-pressure hexane gas pipeline can enter the purging pipeline on the purging device, thereby achieving the purging function of the lower part of the polymerization reactor, flange 1, and ball valve 2. More preferably, a shut-off valve can also be installed on each purging pipeline. For example, a first shut-off valve is installed on the first purging pipeline 41, and a second shut-off valve is installed on the second purging pipeline. When the gas delivery pump, the main shut-off valve, and the first shut-off valve are turned on, the gas enters the slurry discharge equipment of the present invention through the first purging pipeline 41; when the gas delivery pump, the main shut-off valve, the first shut-off valve, and the second shut-off valve are turned on, the gas enters the slurry discharge equipment of the present invention through the first purging pipeline 41 and the second purging pipeline 42.
[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0048] In the description of this invention, unless otherwise stated, the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0049] The above technical solution is only one embodiment of the present invention. For those skilled in the art, based on the principles disclosed in the present invention, it is easy to make various types of improvements or modifications, and not limited to the technical solutions described in the specific embodiments of the present invention. Therefore, the foregoing description is only a preferred option and is not restrictive.
Claims
1. A slurry discharge apparatus with a purging device, characterized in that, The flange is provided with a flange opening; the axis of the flange opening is perpendicular to the horizontal plane; a purge channel is formed on the flange, which penetrates the inner side and the outer side of the flange; A ball valve is connected to the bottom surface of the flange; the ball valve is provided with a ball valve inlet and a ball valve outlet; the ball valve inlet communicates with the flange; A discharge pipe is arranged below the ball valve, which communicates with the ball valve outlet; The purge device is provided with at least one purge pipeline; at least one of the purge pipelines is connected with the purge channel.
2. The slurry discharge equipment with a purge device according to claim 1, wherein the included angle between the purge channel and the horizontal plane is 5-10°; Preferably, the purge channel is provided with a purge inlet and a purge outlet, and the height of the purge outlet in the vertical direction is greater than that of the purge inlet in the vertical direction.
3. The slurry discharge equipment with a purge device according to claim 1, wherein a pair of purge channels is arranged on the flange, and the pair of purge channels comprises two opposite and parallel arranged purge channels.
4. The slurry discharge equipment with a purge device according to claim 3, wherein the number of the purge channels is multiple pairs; Preferably, the multiple pairs of purge channels are preferably arranged at equal intervals.
5. The slurry discharge equipment with a purge device according to claim 1, wherein the flange and the ball valve are detachably connected.
6. The slurry discharge equipment with a purge device according to claim 1, wherein the axis of the discharge pipe is perpendicular to the horizontal plane.
7. The slurry discharge equipment with a purge device according to claim 1, wherein the discharge pipe and the ball valve are detachably connected.
8. The slurry discharge equipment with a purge device according to claim 1, wherein the purge device is further provided with a third purge pipeline, which is arranged on the side of the ball valve and communicates with the ball valve.
9. The slurry discharge equipment with a purge device according to claim 8, wherein the included angle between the third purge pipeline and the horizontal plane is 5-10°; and / or the number of the third purge pipelines is multiple. The polymeric reactor body and the slurry discharge equipment with a purge device according to any one of claims 1-9; the slurry discharge equipment with a purge device is arranged below the polymeric reactor body, and the slurry discharge equipment with a purge device is connected with the polymeric reactor body. 10. A polymerization reactor characterized by,