Liquid seal deslagging tank on polymerization production device

Abstract

The utility model belongs to the technical field of polymerization product production equipment, and particularly relates to a liquid seal deslagging tank on a polymerization production device. The cylinder body comprises a cylinder section and a cone positioned below the cylinder section; the downcomer is vertically arranged in the cylindrical section, and an outlet of the downcomer is positioned at the lower part of the cylindrical section; the discharging opening is formed in the side face of the cylinder section, and the discharging opening is higher than an outlet of the downcomer; the pressing plate is arranged on the inner wall of the cylindrical section and is positioned below the discharge hole; and the plurality of baffle plates are uniformly distributed on the inner wall of the cylindrical section. The utility model is used for solving the technical problems in the prior art that the before-pumping filter and the arc-shaped filter screen of the liquid seal deslagging tank are blocked and cleaned and washed after being blocked, so that labor and water are wasted, and the environment is easily influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of polymerization product production equipment, and particularly relates to a liquid-sealed slag discharge tank on a polymerization production device. Background Art

[0002] In current polyester production equipment, the liquid-sealed slag discharge tanks set in the vacuum system are as shown in Figure 3 and Figure 4 .

[0003] The problems and disadvantages of such liquid-sealed slag discharge tanks are as follows:

[0004] The liquid-sealed slag discharge tank is divided into an inner chamber and an outer chamber. The downcomer is in the inner chamber, and the spraying liquid flows out from the upper part of the inner chamber through an arc-shaped filter screen. Due to the relatively small volume of the inner chamber, the spraying volume is very large, the liquid tumbles violently, and small-particle polymers are easily carried out and then enter the arc-shaped filter screen, causing it to be blocked after a period of time and requiring timely cleaning and washing. If not cleaned in time, the liquid and small-particle polymers will overflow the arc-shaped filter screen and enter the outer chamber, and then enter the pre-pump filter from the bottom discharge port, causing it to be quickly blocked, resulting in insufficient spraying volume and affecting the stable operation of the vacuum.

[0005] During the cleaning process, it is necessary to open the top sealing cover plate, and the acetaldehyde gas in the liquid will leak out, causing certain personal injuries and environmental pollution.

[0006] The blockage of the pre-pump filter and the arc-shaped filter screen and the cleaning and washing after blockage not only waste labor and water, but also are an important source of polyester wastewater, and increase the operation cost. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a liquid-sealed slag discharge tank on a polymerization production device, which is used to solve the technical problems that the pre-pump filter and the arc-shaped filter screen of the liquid-sealed slag discharge tank in the prior art are blocked and the cleaning and washing after blockage waste labor and water and are also prone to environmental impact.

[0008] The technical solution of the utility model to solve the above technical problems is as follows: A liquid-sealed slag discharge tank on a polymerization production device, comprising:

[0009] A cylinder body, the cylinder body includes a cylindrical section and a cone located below the cylindrical section;

[0010] A downcomer, the downcomer is vertically arranged in the cylindrical section, and the outlet of the downcomer is located at the lower part of the cylindrical section;

[0011] A discharge port, the discharge port is arranged on the side of the cylindrical section, and the height of the discharge port is higher than the outlet of the downcomer;

[0012] A pressing plate, which is arranged on the inner wall of the cylindrical section and is located below the discharge port;

[0013] A plurality of baffle plates, which are evenly distributed on the inner wall of the cylindrical section.

[0014] The utility model adopts a simple structure, cancels the built-in inner chamber and the arc-shaped filter screen, and changes the discharge port from the original lower part to the side of the cylinder. By using the cylinder structure of this application, the polymer brought in by the spray water is deposited in the cone, and the relatively calm spray water above the pressing plate overflows from the discharge port.

[0015] Further: The outlet of the downcomer is provided with a 90° elbow, and the outlet direction of the elbow is parallel to or forms an acute angle with the tangent line of the position of the downcomer corresponding to the cylindrical section;

[0016] The downcomer is located at the edge of the cylindrical section.

[0017] Beneficial effect of this step: The spray water discharged from the downcomer can flow out along the cylindrical section, drive the water in the cylinder to rotate, gather the polymer therein to the center of the water flow rotation, and fall into the cone after enrichment.

[0018] Further: A drainage piece is also provided at the top edge of the outlet of the elbow.

[0019] Beneficial effect of this step: The drainage piece can make the spray water spray horizontally downward after discharging from the elbow.

[0020] Further: The baffle plate is perpendicular to the inner wall of the cylindrical section.

[0021] Beneficial effect of this step: Under the action of the baffle plate and the cone, the polymer residues of different sizes descend and are deposited on the inner wall of the bottom of the cone.

[0022] Further: The height of the baffle plate is from the bottom edge of the cylindrical section to the top edge of the discharge port.

[0023] Beneficial effect of this step: It can control the water flow in the cylindrical section and make part of the polymer fall closely along the inner wall of the cylindrical section.

[0024] Further: The angle of the cone is 55° - 65°.

[0025] Beneficial effect of this step: The cone with this angle is more suitable for the rotating water body to gather the polymer to the bottom.

[0026] The beneficial effect of the utility model is:

[0027] 1. Compared with the currently applied liquid-sealed slag discharge tank, by reducing the flow rate and tumbling degree of the liquid in the tank, the large and small polymer slag in the spray system can settle quickly. The liquid flows out tangentially along the inner cylinder wall from the liquid discharge pipe orifice, forming a certain thrust, causing the liquid in the tank to rotate to a certain extent. Under the action of the baffle plate and the cone, the large and small polymer slag descends and deposits on the inner cylinder wall at the bottom, and then falls into the lower slag discharge trough through the opened ball valve in time. There is no need to inspect the clogging condition of the arc-shaped filter screen and clean it after clogging multiple times a day, which not only saves labor and water but also produces no waste water.

[0028] 2. The outlet is arranged near the middle of the cylinder body, far from the particle sedimentation area. A pressing plate is arranged below it to further stabilize the flow, preventing small particle polymers from flowing out of the outlet and entering the pre-pump filter, greatly reducing the cleaning frequency of the pre-pump filter, which not only saves labor and water but also produces no waste water. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a vertical sectional view of a liquid-sealed slag discharge tank on a polymerization production device provided by the present invention;

[0031] Figure 2 It is a horizontal sectional view of a liquid-sealed slag discharge tank on a polymerization production device provided by the present invention;

[0032] Figure 3 It is a vertical sectional view of a liquid-sealed slag discharge tank in the prior art;

[0033] Figure 4 It is a horizontal sectional view of a liquid-sealed slag discharge tank in the prior art.

[0034] REFERENCE SIGNS:

[0035] 1 - Cylinder body; 2 - Liquid discharge pipe; 3 - Discharge port; 4 - Pressing plate; 5 - Drainage sheet; 6 - Slag discharge device; 7 - Arc-shaped filter screen; 1' - Existing cylinder body; 2' - Existing liquid discharge pipe; 3' - Existing discharge port;

[0036] 11 - Cylindrical section; 12 - Cone; 21 - Elbow; 11' - Inner chamber; 12' - Outer chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The embodiments of the technical solution of the present utility model will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and therefore are only examples and cannot be used to limit the protection scope of the present utility model.

[0038] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0039] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0040] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] Embodiment

[0044] First, briefly describe the structure of the liquid-sealed slag discharge tank in the prior art. As Figure 3 shown, the existing discharge port 3' is at the bottom. The existing discharge port 3' is connected to the pre-pump filter. Since the existing discharge port 3' is at the bottom, the polymer overflowing from the arc-shaped filter screen 7 will enter the pre-pump filter through the existing discharge port 3', resulting in the blockage of the pre-pump filter. As Figure 4 shown, the position of the rectangular frame in the middle of the existing cylinder 1' is the inner chamber 11'. The outer chambers 12' are on both sides of the inner chamber 11'. The existing downcomer 2' is in the inner chamber 11'. Due to the small space of the inner chamber 11' and the large momentum of the liquid discharged by the existing downcomer 2', the liquid is prone to tumbling, which will cause the polymer to overflow from the arc-shaped filter screen 7.

[0045] As Figure 1 shown, a liquid-sealed slag discharge tank on a polymerization production device provided by the present invention includes:

[0046] A cylinder 1, the cylinder 1 includes a cylindrical section 11 and a cone 12 located below the cylindrical section 11;

[0047] A downcomer 2, the downcomer 2 is vertically arranged in the cylindrical section 11, and the outlet of the downcomer 2 is located at the lower part of the cylindrical section 11;

[0048] A discharge port 3, the discharge port 3 is arranged on the side of the cylindrical section 11, and the height of the discharge port 3 is higher than the outlet of the downcomer 2;

[0049] A pressing plate 4, the pressing plate 4 is arranged on the inner wall of the cylindrical section 11 and is located below the discharge port 3;

[0050] Multiple baffle plates 5, multiple baffle plates 5 are evenly distributed on the inner wall of the cylindrical section 11.

[0051] The present invention adopts a simple structure, cancels the built-in inner chamber 11' and the arc-shaped filter screen 7, and changes the discharge port 3 from the original bottom to the side of the cylinder 1. By using the cylinder structure of the present application, the polymer brought in by the spray water is deposited in the cone 12, and the relatively calm spray water above the pressing plate 4 overflows from the discharge port 3.

[0052] On the basis of the above technical solution, a 90° elbow 21 is provided at the outlet of the downcomer 2, and the outlet direction of the elbow 21 is parallel to or forms an acute angle with the tangent of the position of the cylindrical section 11 corresponding to the downcomer 2;

[0053] The downcomer 2 is located at the edge of the cylindrical section 11.

[0054] The spray water discharged from the downcomer 2 can flow out along the cylindrical section 11, drive the water in the cylinder 1 to rotate, collect the polymer therein to the center of the water rotation, and fall into the cone 12 after enrichment.

[0055] On the basis of the above technical solution, a drainage plate is further provided at the top edge of the outlet of the elbow 21 .

[0056] The drainage plate allows the spray water to be discharged from the elbow 21 and then sprayed horizontally downward.

[0057] On the basis of the above technical solution, the baffle 5 is arranged perpendicularly on the inner wall of the cylindrical section 11 .

[0058] Under the action of the baffle 5 and the cone 12, the large and small polymer slags are caused to fall and also deposited on the inner cylinder wall at the bottom of the cone 12.

[0059] On the basis of the above technical solution, the height of the baffle 5 is from the bottom edge of the cylindrical section 11 to the top edge of the discharge port 3 .

[0060] The water flow of the cylindrical section 11 can be controlled so that part of the polymer falls close to the inner wall of the cylindrical section 11 .

[0061] On the basis of the above technical solution, the angle of the cone 12 is 55° to 65°.

[0062] The cone 12 at this angle is more suitable for the rotating water body to gather the polymer to the bottom.

[0063] Finally, the ball valve is used to connect the slag discharge device 6. When there are more polymers in the cone 12, the ball valve is opened to allow them to enter the slag discharge device 6, and the corresponding waste is discharged using the filter layer and three solid, liquid and gas separation outlets of the slag discharge device.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A liquid seal slag discharge tank on a polymerization production device, characterized in that, Comprising: A cylinder body, the cylinder body comprising a cylindrical section and a cone located below the cylindrical section; A downcomer, the downcomer being vertically arranged in the cylindrical section, and the outlet of the downcomer being located at the lower part of the cylindrical section; An outlet, the outlet being arranged on the side surface of the cylindrical section, and the height of the outlet being higher than the outlet of the downcomer; A pressing plate, the pressing plate being arranged on the inner wall of the cylindrical section and located below the outlet; A plurality of baffle plates, the plurality of baffle plates being evenly distributed on the inner wall of the cylindrical section.

2. The liquid-sealed slag discharge tank on the polymerization production device according to claim 1, characterized in that The outlet of the downcomer is provided with a 90° elbow, and the outlet direction of the elbow is parallel or forms an acute angle with the tangent line corresponding to the position of the downcomer in the cylindrical section; The downcomer is located at the edge of the cylindrical section.

3. The liquid-sealed slag discharge tank on the polymerization production device according to claim 2, wherein, A drainage piece is further provided at the top edge of the outlet of the elbow.

4. The liquid seal slag discharge tank on the polymerization production device according to claim 1, wherein The baffle plates are perpendicular to the inner wall of the cylindrical section.

5. The liquid-sealed slag discharge tank on the polymerization production device according to claim 1, characterized in that, The height of the baffle plate is from the bottom edge of the cylindrical section to the top edge of the outlet.

6. The liquid seal slag discharge tank on the polymerization production device according to claim 1, characterized in that, The angle of the cone is 55° - 65°.

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