Vinyl chloride monomer coalescence device

Abstract

In order to solve the problems that in the prior art, a solid caustic soda dryer is adopted for drying, water of 5 * 10 < 4 >-6 * 10 < 4 > is still contained after drying, and the requirement for high-quality PVC production cannot be met, the vinyl chloride monomer coalescence device comprises an equipment body, a vinyl chloride monomer inlet assembly and a faceplate a, one end of the faceplate a is connected with the top of a barrel, and the other end of the faceplate a is connected with a baffle a. The other end of the baffle a is connected with a baffle b, a coalescence element is arranged on the right side of the faceplate a, a vinyl chloride monomer outlet and a faceplate b are further arranged, partition plates are arranged on the two sides of the faceplate b, and an efficient coalescence demisting element is arranged below the faceplate b; and residual emulsified water and free water in the vinyl chloride monomer (liquid) filtered by the pre-filter are coalesced and grow up, and then are separated, so that the requirement of producing high-quality PVC (Polyvinyl Chloride) is met.

Description

Technical Field

[0001] The utility model relates to the field of chemical production, in particular to a vinyl chloride monomer agglomeration device. Background Art

[0002] In the current production process, the production of vinyl chloride monomer by calcium carbide method contains 1.5x10 3 The presence of water will cause the vinyl chloride peroxide to undergo hydrolysis reaction, producing acidic substances such as hydrogen chloride, formic acid, and formaldehyde, which will corrode equipment. The iron ions produced will directly affect the quality of PVC. The traditional process generally uses solid alkali dryers for drying, but after drying, it still contains 5x10 4 ~6x10 4 The water cannot meet the needs of high-quality PVC production. Utility Model Content

[0003] In order to solve the problem that the existing technology uses solid alkali dryer for drying, but still contains 5x10 4 ~6x10 4 The water cannot meet the needs of high-quality PVC production.

[0004] The technical scheme of the utility model is: a vinyl chloride monomer coalescence device, comprising an equipment body, the equipment body comprising a head, a cylinder, a saddle, a manhole, and auxiliary pipe fittings, a vinyl chloride monomer inlet assembly is arranged on the upper left side of the cylinder of the equipment body, the vinyl chloride monomer inlet assembly comprises an inlet pipe and a demulsifier, the inlet pipe is connected to the cylinder, the demulsifier is located in the cylinder, the demulsifier is fixed to the inlet pipe through reinforcing ribs, a faceplate a is arranged on the upper left side of the cylinder, one end of the faceplate a is connected to the top of the cylinder, the other end is connected to a baffle a, the other end of the baffle a is connected to a baffle b, the baffle b is connected to the bottom of the cylinder, the faceplate a, the baffle a, and the baffle b together divide the cylinder into two independent left and right parts, a coalescence element is arranged on the right side of the faceplate a, and the coalescence element is parallel to the central axis of the equipment body;

[0005] A vinyl chloride monomer outlet is provided at the upper right part of the cylinder, a flower disc b is provided in the cylinder just below the vinyl chloride monomer outlet, partitions are provided on both sides of the flower disc b, and the partitions on both sides, the flower disc b and the cylinder form an independent space, and a high-efficiency coalescing demisting element is provided below the flower disc b;

[0006] A liquid collecting bag is arranged at the lower right side of the cylinder.

[0007] The flower disc a and the flower disc b are provided with sedimentation circular holes.

[0008] The coalescing element is cylindrical in shape, with a flange at the inlet end, connected to the faceplate a, and the end is sealed.

[0009] The high-efficiency coalescing demisting element is cylindrical, with a flange at the outlet end connected to the faceplate b, and a sealed inlet end.

[0010] The utility model has the advantages that the utility model aggregates and grows the remaining emulsified water and free water in the vinyl chloride monomer (liquid) filtered by the pre-filter through the device, and then separates them to meet the needs of producing high-quality PVC. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model:

[0012] Description of the accompanying drawings: 1. Equipment body; 2. Vinyl chloride monomer inlet assembly; 3. Faceplate a; 4. Baffle a; 5. Coalescing element; 6. Baffle b; 7. Partition plate; 8. Faceplate b; 9. High-efficiency coalescing and demisting element; 10. Liquid collecting bag; 11. Vinyl chloride monomer outlet; DETAILED DESCRIPTION

[0013] like Figure 1 The utility model is a vinyl chloride monomer coalescence device, comprising an equipment body 1, the equipment body 1 comprising a head, a cylinder, a saddle, a manhole, and auxiliary pipe fittings, a vinyl chloride monomer inlet assembly 2 is provided at the upper left side of the cylinder of the equipment body 1, the vinyl chloride monomer inlet assembly 2 comprises an inlet pipe and a demulsifier, the inlet pipe is connected to the cylinder, the demulsifier is located in the cylinder, the demulsifier is fixed to the inlet pipe through reinforcing ribs, a faceplate a3 is provided at the upper left half of the cylinder, one end of the faceplate a3 is connected to the top of the cylinder, and the other end is connected to a baffle a4, the other end of the baffle a4 is connected to a baffle b6, the baffle b6 is connected to the bottom of the cylinder, the faceplate a3, the baffle a4, and the baffle b6 together divide the cylinder into two independent left and right parts, a coalescence element 5 is provided on the right side of the faceplate a3, and the coalescence element 5 is parallel to the central axis of the equipment body 1;

[0014] A vinyl chloride monomer outlet 11 is provided at the upper right side of the cylinder, a flower disc b8 is provided in the cylinder just below the vinyl chloride monomer outlet 11, partitions 7 are provided on both sides of the flower disc b8, and the partitions 7 on both sides, the flower disc b8 and the cylinder form an independent space, and a high-efficiency coalescing demisting element 9 is provided below the flower disc b8;

[0015] A liquid collecting bag 10 is provided at the lower right side of the cylinder.

[0016] The flower disc a3 and the flower disc b8 are provided with circular sinking holes.

[0017] The coalescing element 5 is a composite material rolled into a cylindrical shape, with a flange at the inlet end, connected to the faceplate a, and sealed at the end. The medium passes through the cylinder wall from the inside to the outside. The material has good lipophilic and hydrophobic properties, allowing the oil to pass smoothly and effectively preventing water droplets from passing through, achieving an effective dehydration effect. Free water coalesces and grows.

[0018] The high-efficiency coalescing and demisting element 9 is rolled into a cylindrical shape from a variety of composite materials, with a flange at the outlet end connected to the faceplate b, and a sealed inlet end. The medium passes through the cylinder wall from the outside to the inside. The material has good oleophilic and hydrophobic properties, allowing the oil to pass smoothly while effectively preventing water droplets from passing through, thereby achieving an effective dehydration effect.

[0019] During assembly: the equipment body 1 is a horizontal cylindrical container, which is composed of a head, a cylinder, a saddle, a manhole and auxiliary pipe fittings.

[0020] The vinyl chloride monomer inlet assembly 2 includes an inlet pipe and an emulsifier, and is located at the top of the leftmost cylinder of the equipment body 1. The inlet pipe is welded to the equipment body 1. The emulsifier is located in the equipment body and fixed to the inlet pipe by reinforcing ribs.

[0021] The faceplate a3 is located in the upper half of the equipment cylinder and is welded to the cylinder and baffle a4. Together with baffle a4 and baffle b6, the equipment body is divided into two independent left and right parts. A sedimentation circular hole is opened on the faceplate a3 for installing the coalescing element 5.

[0022] The coalescing element 5 is vertically installed on the right side of the faceplate a3, parallel to the central axis of the equipment body 1, and fixed to the faceplate a3 by a tie rod.

[0023] The faceplate b8 is located at the upper part of the rear section of the cylinder of the equipment body 1, directly below the vinyl chloride monomer outlet 11, with a certain distance from the top of the cylinder, and is welded to the cylinder and the partition 7. Together with the partition 7 and the faceplate b8, an independent space is separated in the upper part of the rear half of the equipment body. The faceplate b8 is fixed horizontally on the equipment body, and a sedimentation circular hole is opened on the faceplate for installing the high-efficiency coalescence demisting element 9.

[0024] The high-efficiency coalescing demisting element 9 is vertically hoisted under the faceplate b8, perpendicular to the central axis of the equipment body, and fixed to the faceplate b8 by a tie rod.

[0025] The liquid collecting bag 10 is located at the lower part of the rear section of the equipment body, is welded to the equipment body, and has a certain distance from the baffle 6.

[0026] When in use, the vinyl chloride monomer inlet assembly 2 includes an inlet pipe and an emulsifier, and is located at the left end of the equipment body 1. When the vinyl chloride monomer enters the equipment body 1, it first collides with the emulsifier welded to the inlet pipe, and the emulsified water in the monomer becomes free water. Due to the density difference, large water molecules fall into the lower part of the equipment and are discharged through the drain port.

[0027] The coalescing unit 5 is located at the vinyl chloride monomer inlet assembly 2, connected to the equipment body 1, the faceplate a3 is vertically fixed to the equipment body, the coalescing unit 5 is vertically installed on the faceplate a3, the equipment body 1 is divided into left and right separate spaces by the baffle a4, the baffle b6 and the faceplate a3, the vinyl chloride monomer enters the coalescing element 5 from the faceplate a3 at the lower part of the equipment body 1, passes through the coalescing element 5 from the inside to the outside, and continuously coalesces and grows. It condenses into large droplets on the outer surface of the coalescing element 5, and falls into the liquid collection bag 10 under the entrainment of the fluid.

[0028] The faceplate a3 is horizontally fixed to the lower half of the equipment body 1 , and a sinking circular hole is opened on the faceplate a3 for installing the coalescing element 5 .

[0029] The liquid collecting bag 10 is located at the lower part of the rear section of the equipment body 1, and the distance from the coalescing element 5 is obtained through calculation, ensuring that the coalesced droplets fall into the liquid collecting bag 10 through a parabola under the carry of the fluid, and settle and separate again in the oil collecting bag 10, and the water is discharged from the equipment from the lower outlet.

[0030] The vinyl chloride monomer outlet 11 is located at the top of the rear section of the equipment body 1, and the lower part of the vinyl chloride monomer outlet 11 is separated into a separate space by the partition 7 and the faceplate b8. The partition 7 is located on the left and right sides of the vinyl chloride monomer outlet 11, connected to the equipment body 1 and the faceplate b8, and the faceplate b8 is horizontally fixed on the equipment body 1 and the partition 7. The faceplate b8 is provided with a sedimentation circular hole for installing the high-efficiency coalescing demisting element 9.

[0031] The high-efficiency coalescing and demisting element 9 is vertically suspended on the flower disc b8 and is made of oleophilic and hydrophobic material. The medium enters from the outside and exits from the inside. The fine water mist collides on the surface of the high-efficiency coalescing and demisting element 9 many times, and continuously condenses and grows, and falls into the liquid collecting bag 10 below, thereby bringing extremely high separation efficiency. The separated vinyl chloride monomer passes through the high-efficiency coalescing and demisting element 9, enters the isolated separate space, and flows out of the equipment body 1.

Claims

1. A vinyl chloride monomer coalescence device, comprising an equipment body (1), wherein the equipment body (1) comprises a head, a cylinder, a saddle, a manhole, and auxiliary pipe fittings, characterized in that: A vinyl chloride monomer inlet assembly (2) is provided at the upper left side of the cylinder of the equipment body (1), and the vinyl chloride monomer inlet assembly (2) includes an inlet pipe and an emulsifier, the inlet pipe is connected to the cylinder, the emulsifier is located in the cylinder, and the emulsifier is fixed to the inlet pipe by reinforcing ribs, a faceplate a (3) is provided in the upper left side of the cylinder, one end of the faceplate a (3) is connected to the top of the cylinder, and the other end is connected to a baffle a (4), the other end of the baffle a (4) is connected to a baffle b (6), and the baffle b (6) is connected to the bottom of the cylinder, the faceplate a (3), the baffle a (4), and the baffle b (6) together divide the cylinder into two independent left and right parts, and a coalescing element (5) is provided on the right side of the faceplate a (3), and the coalescing element (5) is parallel to the central axis of the equipment body (1); A vinyl chloride monomer outlet (11) is provided at the upper right side of the cylinder, a faceplate b (8) is provided in the cylinder just below the vinyl chloride monomer outlet (11), partitions (7) are provided on both sides of the faceplate b (8), and the partitions (7) and the faceplate b (8) on both sides form an independent space with the cylinder, and a high-efficiency coalescing demisting element (9) is provided below the faceplate b (8); A liquid collecting bag (10) is provided at the lower right side of the cylinder.

2. A vinyl chloride monomer coalescence device as claimed in claim 1, characterized in that: The flower disc a (3) and the flower disc b (8) are provided with circular sinking holes.

3. A vinyl chloride monomer coalescence device as claimed in claim 1, characterized in that: The coalescing element (5) is cylindrical in shape, has a flange at the inlet end, is connected to the faceplate a, and has a sealed end.

4. A vinyl chloride monomer coalescence device as claimed in claim 1, characterized in that: The high-efficiency coalescing demisting element (9) is cylindrical, has a flange at the outlet end, is connected to the faceplate b, and has a sealed inlet end.

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