Spraying water collecting device for steam exhaust spraying water system of polymerization kettle

Abstract

The invention relates to a spray water collecting device for a steam exhaust spray water system of a polymerization kettle. Comprising a third polymerizer spray water inlet pipeline, a second polymerizer spray water inlet pipeline, a first polymerizer spray water inlet pipeline, a gas outlet pipeline, a spray water pipeline, a spray water collecting tank, a stainless steel partition plate, a spray water outlet, a first polymerizer, a second polymerizer, a third polymerizer, a first spray tank, a second spray tank and a third spray tank, the device comprises a first polymeric kettle exhaust pipeline, a second polymeric kettle exhaust pipeline, a third polymeric kettle exhaust pipeline, a filter, a spraying water pump, a heat exchanger and a buffer water tank. The spraying device is reasonable in structure and ingenious in design, water containing gas is effectively prevented from entering the spraying water outlet pipeline, the cavitation phenomenon of the spraying water pump is avoided, the pressure of spraying water is stabilized, water can be continuously supplied into the spraying tank, it is guaranteed that the pressure of the polymerization kettle can reach the required value, and the spraying device has good market prospects and development space for the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment for the exhaust steam system of polymerization kettles in chemical production, and particularly relates to a spray water collection device for a spray water system of a polymerization kettle exhaust steam. Background Art

[0002] In chemical production, polymerization kettles are commonly used. The exhaust steam system of the polymerization kettle discharges high-temperature and high-pressure gases. After the gases are cooled by spraying to form a gas-liquid mixture, they enter the spray water collection tank. After the gas-liquid mixture enters the spray water collection tank, the water in the spray water collection tank contains a large amount of gases. The water containing a large amount of gases enters the spray water pipeline. There is a spray water pump on the spray water pipeline. When the water containing gases enters the spray water pump, it is easy to cause cavitation, resulting in unstable spray water pressure, and continuous water supply cannot be obtained in the spray tank, resulting in the pressure of the polymerization kettle not reaching the set value.

[0003] How to design a spray water collection device for a polymerization kettle exhaust steam spray water system with reasonable structure, ingenious design, effectively avoiding the water containing gases from entering the spray water pipeline, avoiding cavitation of the spray water pump, stabilizing the pressure of the spray water, enabling continuous water supply in the spray tank, stabilizing the negative pressure state in the spray tank, thereby helping the polymerization kettle exhaust steam and relieve pressure, ensuring that the pressure of the polymerization kettle can reach the required value, and better stabilizing the product quality is the problem that needs to be solved currently. Summary of the Invention

[0004] In order to solve the technical problems that the water containing high-temperature and high-pressure gases in the existing spray water collection tank enters the spray water pump, causing cavitation, resulting in unstable spray water pressure, continuous water supply cannot be obtained in the spray tank, and the pressure of the polymerization kettle cannot reach the set value, etc., the present invention provides a spray water collection device for a polymerization kettle exhaust steam spray water system to achieve the purposes of reasonable structure, ingenious design, effectively avoiding the water containing gases from entering the spray water pipeline, avoiding cavitation of the spray water pump, stabilizing the pressure of the spray water, enabling continuous water supply in the spray tank, stabilizing the negative pressure state in the spray tank, thereby helping the polymerization kettle exhaust steam and relieve pressure, ensuring that the pressure of the polymerization kettle can reach the required value, and better stabilizing the product quality.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows: A spray water collection device for a polymerization kettle exhaust spray water system, including a third polymerization kettle spray water inlet pipeline, a second polymerization kettle spray water inlet pipeline, a first polymerization kettle spray water inlet pipeline, a gas outlet pipeline, a spray water pipeline, a spray water collection tank, a stainless steel partition, a spray water outlet, a first polymerization kettle, a second polymerization kettle, a third polymerization kettle, a first spray tank, a second spray tank, a third spray tank, a first polymerization kettle exhaust pipeline, a second polymerization kettle exhaust pipeline, a third polymerization kettle exhaust pipeline, a filter, a spray water pump, a heat exchanger and a buffer water tank. The first spray tank, the second spray tank and the third spray tank are arranged in parallel and are respectively connected to the inside of the spray water collection tank through spray water outlets at the lower ends of the first polymerization kettle spray water inlet pipeline, the second polymerization kettle spray water inlet pipeline and the third polymerization kettle spray water inlet pipeline. The stainless steel partition is vertically arranged at the bottom of the spray water collection tank. The gas outlet pipeline is arranged at the top of the spray water collection tank, and the gas in the upper part of the spray water collection tank enters the buffer water tank through the gas outlet pipeline. A filter and a spray water pump are connected in series between the spray water pipeline and the heat exchanger, and the spray water cooled by the heat exchanger enters the first spray tank, the second spray tank and the third spray tank respectively through the pipeline.

[0006] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: For example, the high-temperature and high-pressure gases in the first polymerization kettle, the second polymerization kettle and the third polymerization kettle respectively enter the first spray tank, the second spray tank and the third spray tank through the first polymerization kettle exhaust pipeline, the second polymerization kettle exhaust pipeline and the third polymerization kettle exhaust pipeline.

[0007] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: For example, an overflow water pipeline is also arranged at the top of the spray water collection tank, and the overflow water pipeline is communicated with the buffer water tank.

[0008] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: For example, the stainless steel partition is an arc-shaped stainless steel plate, the height of the stainless steel partition is half of the internal height of the spray water collection tank, the lower edge of the stainless steel partition is welded and fixed to the bottom surface of the spray water collection tank, and the two side edges of the stainless steel partition are welded and fixed to the side surface of the spray water collection tank to form a barrier groove for blocking gas from entering the spray water pipeline.

[0009] Compared with the prior art, the beneficial effects of the present invention are: The present invention includes a spray water inlet pipeline for a third polymerization kettle, a spray water inlet pipeline for a second polymerization kettle, a spray water inlet pipeline for a first polymerization kettle, a gas outlet pipeline, a spray water pipeline, a spray water collection tank, a stainless steel partition, a spray water outlet, a first polymerization kettle, a second polymerization kettle, a third polymerization kettle, a first spray tank, a second spray tank, a third spray tank, a first polymerization kettle exhaust pipeline, a second polymerization kettle exhaust pipeline, a third polymerization kettle exhaust pipeline, a filter, a spray water pump, a heat exchanger, and a buffer water tank.

[0010] By providing a stainless steel partition, a gas outlet pipeline, and an overflow water pipeline, the present invention effectively prevents water containing gas from entering the spray water pipeline, avoids cavitation of the spray water pump, stabilizes the pressure of the spray water, enables continuous water supply in the spray tank, and stabilizes the negative pressure state in the spray tank, thereby helping the polymerization kettle to exhaust and relieve pressure, and ensuring that the pressure of the polymerization kettle can reach the required value. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the working process of the present invention; Figure 2 is a schematic cross-sectional structure diagram of the spray water collection tank; Figure 3 is a schematic top view structure diagram of the spray water collection tank; Figure 4 is a schematic cross-sectional structure diagram of the spray water collection tank; Reference numerals in the figure: 1. Spray water inlet pipeline for the third polymerization kettle, 2. Spray water inlet pipeline for the second polymerization kettle, 3. Spray water inlet pipeline for the first polymerization kettle, 4. Gas outlet pipeline, 5. Overflow water pipeline, 6. Spray water pipeline, 7. Spray water collection tank, 8. Stainless steel partition, 9. Spray water outlet, 10. First polymerization kettle, 11. Second polymerization kettle, 12. Third polymerization kettle, 13. First spray tank, 14. Second spray tank, 15. Third spray tank, 16. First polymerization kettle exhaust pipeline, 17. Second polymerization kettle exhaust pipeline, 18. Third polymerization kettle exhaust pipeline, 19. Filter, 20. Spray water pump, 21. Heat exchanger, 22. Buffer water tank. Detailed Embodiments

[0012] The following further details the specific embodiments of the present invention with reference to the drawings.

[0013] As shown in the figure, a spray water collection device for a steam exhaust spray water system of a polymerization kettle includes a third polymerization kettle spray water inlet pipeline 1, a second polymerization kettle spray water inlet pipeline 2, a first polymerization kettle spray water inlet pipeline 3, a gas outlet pipeline 4, a spray water pipeline 6, a spray water collection tank 7, a stainless steel partition 8, a spray water outlet 9, a first polymerization kettle 10, a second polymerization kettle 11, a third polymerization kettle 12, a first spray tank 13, a second spray tank 14, a third spray tank 15, a first polymerization kettle exhaust pipeline 16, a second polymerization kettle exhaust pipeline 17, a third polymerization kettle exhaust pipeline 18, a filter 19, a spray water pump 20, a heat exchanger 21 and a buffer water tank 22. The first spray tank 13, the second spray tank 14 and the third spray tank 15 are arranged in parallel and are respectively connected to the inside of the spray water collection tank 7 through the spray water outlets 9 at the lower ends of the first polymerization kettle spray water inlet pipeline 3, the second polymerization kettle spray water inlet pipeline 2 and the third polymerization kettle spray water inlet pipeline 1. The stainless steel partition 8 is vertically arranged at the bottom of the spray water collection tank 7. The gas outlet pipeline 4 is arranged at the top of the spray water collection tank 7, and the gas in the upper part of the spray water collection tank 7 enters the buffer water tank 22 through the gas outlet pipeline 4. A filter 19 and a spray water pump 20 are connected in series between the spray water pipeline 6 and the heat exchanger 21, and the spray water cooled by the heat exchanger 21 enters the first spray tank 13, the second spray tank 14 and the third spray tank 15 through pipelines respectively.

[0014] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: for example, the high-temperature and high-pressure gases in the first polymerization kettle 10, the second polymerization kettle 11 and the third polymerization kettle 12 respectively enter the first spray tank 13, the second spray tank 14 and the third spray tank 15 through the first polymerization kettle exhaust pipeline 16, the second polymerization kettle exhaust pipeline 17 and the third polymerization kettle exhaust pipeline 18.

[0015] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: for example, an overflow water pipeline 5 is also arranged on the side of the spray water collection tank 7, and the overflow water pipeline 5 is communicated with the buffer water tank 22.

[0016] The above is the basic implementation mode of the present invention, and further improvements, perfection and limitations can be made on this basis: for example, the stainless steel partition 8 is an arc-shaped stainless steel plate, the height of the stainless steel partition 8 is half of the internal height of the spray water collection tank 7, the lower edge of the stainless steel partition 8 is welded and fixed to the bottom surface of the spray water collection tank 7, and the two side edges of the stainless steel partition 8 are welded and fixed to the side surface of the spray water collection tank 7 to form a barrier groove for blocking gas from entering the spray water pipeline 6.

[0017] Such as Figure 4As shown, the height of the stainless - steel partition 8 is approximately half of the internal height of the spray - water collection tank 7. The lower edge of the stainless - steel partition 8 is welded to the bottom surface of the spray - water collection tank 7, and the two side edges of the stainless - steel partition 8 are welded to the side surface of the spray - water collection tank 7. The shape of the stainless - steel partition 8 is an arc - shaped stainless - steel plate (which can be understood as an arc - shaped steel plate bent from a rectangular steel plate). Blocked by the stainless - steel partition 8, a large amount of gas floats to the top of the spray - water collection tank 7 and goes to the buffer water tank 22 through the gas outlet pipeline 4; the gas cannot enter the spray - water pipeline 6 under the blockage of the stainless - steel partition 8. The spray water in the spray - water pipeline 6 is filtered by the filter 19 to remove impurities and then enters the spray - water pump 20, avoiding cavitation of the spray - water pump.

[0018] The nozzle of the spray - water pipeline 6 inside the spray - water collection tank 7 faces the bottom surface of the spray - water collection tank 7. Inside the spray - water collection tank 7, the stainless - steel partition 8 separates the inlet of the spray - water pipeline 6 from the outlets of the spray - water inlet pipeline 1 for the third polymerization kettle, the spray - water inlet pipeline 2 for the second polymerization kettle, and the spray - water inlet pipeline 3 for the first polymerization kettle.

[0019] The working process of the present invention is as follows: The spray - water collection tank 7 needs to collect the spray water from the first spray tank 13, the second spray tank 14, and the third spray tank 15. Here, taking the first polymerization system as an example, the high - temperature and high - pressure gas discharged from the first polymerization kettle 10 enters the first spray tank 13 through the first polymerization kettle exhaust pipeline 16. In the first spray tank 13, the high - temperature and high - pressure gas is cooled by the spray of low - temperature spray water and becomes a gas - liquid mixed spray water containing gas. The gas - liquid mixed spray water enters the interior of the spray - water collection tank 7 from the first polymerization kettle spray - water inlet pipeline 3 on the upper cover of the spray - water collection tank 7 and enters the spray - water collection tank 7 from the spray - water outlet 9. For the gas - liquid mixed spray water entering the spray - water collection tank 7, blocked by the stainless - steel partition 8, a large amount of gas floats to the top of the spray - water collection tank 7 and goes to the buffer water tank 22 through the gas outlet pipeline 4; the gas cannot enter the spray - water pipeline 6 under the blockage of the stainless - steel partition 8. The spray water in the spray - water pipeline 6 is filtered by the filter 19 to remove impurities and then enters the spray - water pump 20. After being pressurized by the spray - water pump 20, it is cooled by the heat exchanger 21 and then respectively transported to the first spray tank 13, the second spray tank 14, and the third spray tank 15.

[0020] The gas cannot enter the spray - water pipeline 6 under the blockage of the stainless - steel partition 8. In this way, the spray water entering the spray - water pipeline 6 does not contain gas, avoiding cavitation of the spray - water pump 20, stabilizing the pressure of the spray water entering the first spray tank 13, enabling the first spray tank 13 to be continuously supplied with water, and ensuring that the pressure of the first polymerization kettle 10 can be reduced to the required value.

[0021] The working principles of the second polymerization kettle 11, the exhaust pipeline 17 of the second polymerization kettle, the second spray tank 14 in the second polymerization system, the third polymerization kettle 12, the exhaust pipeline 18 of the third polymerization kettle, and the third spray tank 15 in the third polymerization system are the same as those of the first polymerization kettle 10, the exhaust pipeline 16 of the first polymerization kettle, and the first spray tank 13 in the first polymerization system. As can be seen from the drawings, details are not described herein again.

[0022] The structure of the present invention is reasonable and ingeniously designed, effectively preventing water containing gas from entering the spray water outlet pipeline, avoiding the cavitation phenomenon of the spray water pump, stabilizing the pressure of the spray water, enabling continuous water supply in the spray tank, and stabilizing the negative pressure state in the spray tank, thereby helping the polymerization kettle to exhaust and relieve pressure, ensuring that the pressure of the polymerization kettle can reach the required value, better stabilizing the product quality, and solving the technical problems such as water containing high-temperature and high-pressure gas in the existing spray water collection tank entering the spray water pump, causing cavitation phenomenon, resulting in unstable spray water pressure, inability to obtain continuous water supply in the spray tank, and inability to reach the set value of the polymerization kettle pressure. For the prior art, it has good market prospects and development space.

[0023] The specific preferred embodiments and examples of the present invention have been described in detail above in conjunction with the drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of the present invention.

Claims

1. A spray water collection device for use in a spray water system of a polymerization reactor exhaust, characterized in that: The invention comprises a third polymerization kettle spray water inlet pipeline (1), a second polymerization kettle spray water inlet pipeline (2), a first polymerization kettle spray water inlet pipeline (3), a gas outlet pipeline (4), a spray water pipeline (6), a spray water collecting tank (7), a stainless steel partition (8), a spray water outlet (9), a first polymerization kettle (10), a second polymerization kettle (11), a third polymerization kettle (12), a first spray tank (13), a second spray tank (14), a third spray tank (15), a first polymerization kettle exhaust pipeline (16), a second polymerization kettle exhaust pipeline (17), a third polymerization kettle exhaust pipeline (18), a filter (19), a spray water pump (20), a heat exchanger (21) and a buffer water tank (22), wherein the first spray tank (13), the second spray tank (14) and the third spray tank (15) are connected in parallel. The first polymerization kettle spray water inlet pipeline (3), the second polymerization kettle spray water inlet pipeline (2) and the third polymerization kettle spray water inlet pipeline (1) are respectively connected to the inside of the spray water collection tank (7) through the spray water outlets (9) at the lower ends of the first polymerization kettle spray water inlet pipeline (3), the second polymerization kettle spray water inlet pipeline (2) and the third polymerization kettle spray water inlet pipeline (1); the stainless steel partition plate (8) is vertically arranged at the bottom of the spray water collection tank (7); the gas outlet pipeline (4) is arranged at the top of the spray water collection tank (7), and the gas in the upper part of the spray water collection tank (7) enters the buffer water tank (22) through the gas outlet pipeline (4); a filter (19) and a spray water pump (20) are arranged in series between the spray water pipeline (6) and the heat exchanger (21), and the spray water after cooling through the heat exchanger (21) enters the first spray tank (13), the second spray tank (14) and the third spray tank (15) through the pipelines.

2. A spray water collecting device for use in a spray water system of a polymerization reactor exhaust as claimed in claim 1, characterized in that: The high-temperature and high-pressure gas in the first polymerization kettle (10), the second polymerization kettle (11), and the third polymerization kettle (12) enters the first spray tank (13), the second spray tank (14), and the third spray tank (15) through the first polymerization kettle exhaust pipeline (16), the second polymerization kettle exhaust pipeline (17), and the third polymerization kettle exhaust pipeline (18), respectively.

3. A spray water collecting device for use in a spray water system of a polymerization reactor exhaust as claimed in claim 1, characterized in that: An overflow water pipeline (5) is also provided on the side of the spray water collection tank (7), and the overflow water pipeline (5) is connected to the buffer water tank (22).

4. A spray water collecting device for use in a spray water system of a polymerization reactor exhaust as claimed in claim 1, characterized in that: The stainless steel partition (8) is an arc-shaped stainless steel plate. The height of the stainless steel partition (8) is half the internal height of the spray water collection tank (7). The lower edge of the stainless steel partition (8) is welded and fixed to the bottom surface of the spray water collection tank (7). The two side edges of the stainless steel partition (8) are welded and fixed to the side surfaces of the tank body of the spray water collection tank (7), forming a blocking groove for blocking gas from entering the spray water pipeline (6).

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