Multiphase separator capable of separating solid impurities, acid-containing liquid and organic components

Abstract

The utility model discloses a multiphase separator capable of separating solid impurities, acid-containing liquid and organic components. The multiphase separator comprises a separator body, a solid scraper blade, a porous sieve plate, a guide plate and a porous baffle, wherein the solid scraper blade, the porous sieve plate, the guide plate and the porous baffle are arranged in the separator body; the top of the separator body communicates with an inlet pipeline; a solid discharge valve is arranged on the separator body at the tail end of the moving direction of the solid scraper; the bottom of the separator body is divided into a liquid collecting tank and a standing tank by the porous baffle; the tail end of the flow guide plate in the flow guide direction is arranged above the liquid collecting tank; a solid collector is arranged at the bottom of the liquid collecting tank; the upper part of the standing tank is communicated with the water phase discharge line, and the lower part is communicated with the organic phase discharge line. According to the multi-phase separator disclosed by the utility model, solid impurities, organic components and an acid-containing water phase in HFO-1233zd production process equipment and pipeline cleaning water are collected and separated, so that the follow-up treatment difficulty of the cleaning water is greatly reduced, and meanwhile, the total amount and treatment cost of mixed cleaning water needing special follow-up treatment are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a multiphase separator capable of separating solid impurities, acid-containing liquid and organic components. Background Art

[0002] In the industrial production of 1-chloro-3,3,3-trifluoropropene (HFO-1233zd), due to the characteristics of the production process itself, a small amount of impurities will be generated in the process materials at the reactor outlet. After long-term operation, it may cause scaling of downstream heat exchange equipment, reduce the heat exchange efficiency of heat exchange equipment, and affect the normal heat exchange effect of process materials. Therefore, in the industrial production of HFO-1233zd, it is necessary to regularly clean and maintain the heat exchange equipment and process material pipelines.

[0003] When cleaning scaled heat exchange equipment and process material pipelines, a large amount of acidic cleaning water containing solid impurities, organic components and mixed acid of hydrogen fluoride and hydrogen chloride will be generated. The cleaning water contains complex components and is highly corrosive, making subsequent disposal difficult and costly. At the same time, the above cleaning process in the prior art is usually an open operation. After being heated, the acidic components such as hydrogen fluoride and hydrogen chloride in the cleaning water may escape into the environment, causing harm to personnel. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a multiphase separator capable of separating solid impurities, acid-containing liquid and organic components. In the industrial production of HFO-1233zd, when cleaning the scaled heat exchange equipment and process material pipelines, the solid impurities, hydrogen fluoride, hydrogen chloride mixed acid liquid and organic components in the cleaning water can be continuously separated, so that the complex components in the cleaning water can be separately classified and processed, thereby reducing the subsequent processing cost and processing difficulty.

[0005] In order to solve the above technical problems, the utility model provides a multiphase separator capable of separating solid impurities, acid-containing liquid and organic components, comprising a separator body, a solid scraper, a porous sieve plate, a guide plate and a porous baffle plate sequentially arranged inside the separator body from top to bottom;

[0006] The top of the separation body is connected to an inlet pipeline;

[0007] The solid scraper is horizontally movably arranged above the porous screen plate, and a solid discharge valve is arranged on the separator body at the end of the moving direction of the solid scraper;

[0008] The porous baffle divides the bottom of the separator body into a liquid collecting tank and a static tank;

[0009] The end of the guide plate along the guide direction is arranged above the liquid collecting tank, and a collector is arranged at the bottom of the liquid collecting tank;

[0010] The upper part of the static tank is connected to the water phase discharge line, and the lower part is connected to the organic phase discharge line.

[0011] The multiphase separator of the utility model filters and intercepts solid impurities in the cleaning water through a porous sieve plate. A small amount of solid impurity particles that pass through the filtration enter together with a mixed acidic filtrate containing organic matter, hydrogen fluoride, hydrogen chloride, and a large amount of water, and then flow into the collecting tank after being guided by the guide plate. A small amount of solid impurity particles that pass through the filtration are deposited in the collecting tank and enriched in the solid collector at the bottom; a large amount of solid impurities that are intercepted above the porous sieve plate are transported to the solid discharge valve through a scraper and transferred to the outside of the separator body. The mixed acidic filtrate containing organic matter, hydrogen fluoride, hydrogen chloride, and a large amount of water in the collecting tank flows horizontally into the static tank through the small holes set in the porous baffle plate to prevent disturbance of the liquid in the static tank. When there is too much liquid in the collecting tank, it can overflow from the top of the porous baffle plate into the static tank. The mixed filtrate is separated into layers after being fully allowed to stand in the standing tank. The upper layer is an acidic aqueous phase containing hydrogen fluoride and hydrogen chloride with a lower density, and the lower layer is an organic phase mixture with a higher density. The layers are respectively discharged through the aqueous phase discharge line and the organic phase discharge line to separate the solid impurities, organic components and acidic liquids and enter the subsequent processing unit.

[0012] Furthermore, a height-adjustable inner tube is provided in the static tank, and the inner tube is connected to the water phase discharge line. The height of the inner tube can be adjusted according to the liquid level of the water phase in the static tank, thereby adjusting the depth of the inner tube inserted into the filtrate.

[0013] Furthermore, the bottom end of the inner tube is lower than the top end of the porous baffle and higher than the height of the geometric center of the porous baffle.

[0014] Furthermore, the porous sieve plate has a pore size of 0.5-100 mm, preferably 1-50 mm, and more preferably 5-25 mm.

[0015] Furthermore, the angle between the guide plate and the horizontal plane is 0°-60°, preferably 5°-40°, and more preferably 10°-20°.

[0016] Furthermore, the pore size of the porous baffle is 0.5-10 mm, preferably 1-8 mm, and more preferably 2-6 mm.

[0017] Furthermore, the bottom end of the solid scraper is in contact with the top end of the porous screen plate, so as to facilitate pushing the solid impurities intercepted by the porous screen plate to the solid discharge valve and transferring them to the outside of the separator body.

[0018] Furthermore, a vertical partition is arranged at the end of the guide plate, and the bottom end of the vertical partition is arranged in the liquid collecting tank.

[0019] Furthermore, the bottom end of the solid collector is connected to a solid residue discharge line, and a small amount of solid impurities are output through the solid residue discharge line and enter a subsequent processing operation unit.

[0020] Furthermore, the solid discharge valve is connected to a solid discharge line, and the solid discharge line is connected to a solid packaging bag. The solid packaging bag is preferably a sealed solid packaging bag to prevent a small amount of hydrogen fluoride and hydrogen chloride components from escaping during the packaging process and affecting personnel and the environment.

[0021] Beneficial effects of the utility model:

[0022] The multiphase separator of the utility model collects and separates solid impurities, organic components and acid-containing aqueous phase in the HFO-1233zd process equipment and pipeline cleaning water, thereby greatly reducing the difficulty of subsequent treatment of the cleaning water, and at the same time greatly reducing the total amount and disposal cost of mixed cleaning water requiring special subsequent treatment.

[0023] The multiphase separator of the utility model can realize closed operation, thereby eliminating the possible harm of hydrogen fluoride and hydrogen chloride components in mixed cleaning water escaping and injuring people. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the multiphase separator of the utility model;

[0025] Explanation of the numbers in the figure: 1. separator body, 2. solid scraper, 3. porous sieve plate, 4. guide plate, 5. porous baffle, 6. inlet pipeline, 7. liquid collecting tank, 8. static tank, 9. solid collector, 10. water phase discharge line, 11. organic phase discharge line, 12. inner insert pipe, 13. solid residue discharge line, 14. solid discharge line, 15. solid packaging bag, 16. vertical partition. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Reference Figure 1As shown, this embodiment provides a multiphase separator capable of separating solid impurities, acid-containing liquids and organic components, comprising a separator body 1, a solid scraper 2, a porous sieve plate 3, a guide plate 4 and a porous baffle 5 arranged in sequence inside the separator body 1 from top to bottom; the top of the separator body 1 is connected to an inlet pipeline 6; the solid scraper 2 is horizontally movably arranged above the porous sieve plate 3, and a solid discharge valve is arranged on the separator body 1 at the end of the moving direction of the solid scraper 2; the porous baffle 5 divides the bottom of the separator body 1 into a liquid collecting tank 7 and a static tank 8; the end of the guide plate 4 along the diversion direction is arranged above the liquid collecting tank 7, and a solid collector 9 is arranged at the bottom of the liquid collecting tank 7; the upper part of the static tank 8 is connected to an aqueous phase discharge line 10, and the lower part is connected to an organic phase discharge line 11.

[0028] The working principle of the multiphase separator of the utility model is as follows: the HFO-1233zd process equipment and pipeline cleaning water enter the separator body 1 through the inlet pipeline 6, and the solid impurities in the cleaning water are filtered and intercepted by the porous screen plate 3. A small amount of solid impurity particles that pass through the filtration enter the mixed acidic filtrate containing organic matter, hydrogen fluoride, hydrogen chloride, and a large amount of water together with the mixed acidic filtrate containing organic matter, hydrogen fluoride, hydrogen chloride, and a large amount of water, and then flow into the collecting tank 7 after being guided by the guide plate 4. The solid impurity particles that pass through the filtration are deposited in the collecting tank 7 and enriched in the solid collector 9 at the bottom; a large amount of solid impurities intercepted above the porous screen plate 3 are pushed to the solid discharge valve through the solid scraper 2, and the valve is opened to transfer the solid impurities to the outside of the separator body 1. The mixed acidic filtrate containing organic matter, hydrogen fluoride, hydrogen chloride, and a large amount of water in the collecting tank 7 flows horizontally into the static tank 8 through the small holes set in the porous baffle plate 5 to prevent the disturbance of the liquid in the static tank 8. When there is too much liquid in the collecting tank 7, it can overflow from the top of the porous baffle plate 5 into the static tank 8. After the mixed filtrate is fully allowed to stand in the standing tank 8, the upper layer is an acidic aqueous phase containing hydrogen fluoride and hydrogen chloride with a lower density, and the lower layer is an organic phase mixture with a higher density, which are respectively output through the aqueous phase discharge line 10 and the organic phase discharge line 11 to achieve the separation of solid impurities, organic components and acidic liquids and enter the subsequent processing unit. The multiphase separation device of the utility model collects and separates solid impurities, organic components and acidic aqueous phases in the cleaning water of HFO-1233zd process equipment and pipelines, which is convenient for classifying and processing the complex components in the cleaning water, and reducing the subsequent processing costs and processing difficulties.

[0029] Preferably, a height-adjustable inner insert tube 12 is provided in the static tank 8, and the inner insert tube 12 is connected to the water phase discharge line 10. The height of the inner insert tube 12 can be adjusted according to the liquid level of the water phase in the static tank 8, thereby adjusting the depth of the inner insert tube 12 inserted into the filtrate. The bottom end of the inner insert tube 12 is lower than the top end of the porous baffle 5 and higher than the center height of the porous baffle 5.

[0030] Preferably, the aperture of the porous screen plate 3 is 0.5-100 mm, preferably 1-50 mm, and more preferably 5-25 mm. The aperture of the porous baffle plate 5 is 0.5-10 mm, preferably 1-8 mm, and more preferably 2-6 mm. The angle between the guide plate 4 and the horizontal plane, i.e., the angle at which the guide plate 4 tilts downward, is 0°-60°, preferably 5°-40°, and more preferably 10°-20°.

[0031] Specifically, the bottom end of the solid scraper 2 is in contact with the top end of the porous sieve plate 3, so as to facilitate pushing the solid impurities intercepted by the porous sieve plate 3 to the solid discharge valve and transferring them to the outside of the separator body 1. The bottom end of the solid collector 9 is connected to the solid residue discharge line 13, and a small amount of solid impurities are output through the solid residue discharge line 13 and enter the subsequent processing operation unit. The solid discharge valve is connected to the solid discharge line 14, and the solid discharge line 14 is connected to the solid packaging bag 15, which is preferably a sealed solid packaging bag 15 to prevent pollution to the external environment.

[0032] Preferably, the guide plate 4 is provided with one or more guide grooves to facilitate guiding the filtrate to the liquid collecting tank 7 , and a vertical partition 16 is provided at the end of the guide plate 4 , and the bottom end of the vertical partition 16 is provided in the liquid collecting tank 7 .

[0033] In summary, the multiphase separator of the utility model collects and separates solid impurities, organic components, and acidic aqueous phases in the HFO-1233zd process equipment and pipeline cleaning water, greatly reducing the difficulty of subsequent treatment of the cleaning water, and at the same time greatly reducing the total amount and disposal cost of mixed cleaning water that requires special subsequent treatment. The multiphase separator can achieve closed operation, eliminating the possible hazards of hydrogen fluoride and hydrogen chloride components in the mixed cleaning water escaping and injuring people.

[0034] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A multiphase separator capable of separating solid impurities, acid-containing liquid and organic components, characterized in that: It comprises a separator body, a solid scraper, a porous screen plate, a guide plate and a porous baffle plate which are sequentially arranged inside the separator body from top to bottom; The top of the separation body is connected to an inlet pipeline; The solid scraper is horizontally movably arranged above the porous screen plate, and a solid discharge valve is arranged on the separator body at the end of the moving direction of the solid scraper; The porous baffle divides the bottom of the separator body into a liquid collecting tank and a static tank; The end of the guide plate along the guide direction is arranged above the liquid collecting tank, and a collector is arranged at the bottom of the liquid collecting tank; The upper part of the static tank is connected to the water phase discharge line, and the lower part is connected to the organic phase discharge line.

2. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: A height-adjustable inner insert pipe is arranged in the static tank, and the inner insert pipe is connected to the water phase discharge line.

3. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components as claimed in claim 2, characterized in that: The bottom end of the inner tube is lower than the top end of the porous baffle and higher than the height of the geometric center of the porous baffle.

4. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components as claimed in claim 1, characterized in that: The pore size of the porous sieve plate is 0.5-100 mm.

5. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components as claimed in claim 1, characterized in that: The included angle between the guide plate and the horizontal plane is 0°-60°.

6. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: The aperture of the porous baffle is 0.5-10 mm.

7. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: The bottom end of the solid scraper is in contact with and connected to the top end of the porous screen plate.

8. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: A vertical partition is arranged at the end of the guide plate, and the bottom end of the vertical partition is arranged in the liquid collecting tank.

9. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: The bottom end of the solid collector is connected to a solid residue discharge line.

10. The multiphase separator capable of separating solid impurities, acid-containing liquid and organic components according to claim 1, characterized in that: The solid discharging valve is connected to a solid discharging line, and the solid discharging line is connected to a solid packaging bag.

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