Rapid temperature rising device for spray water of overflow weir plate tower

Abstract

The utility model relates to the technical field of overflow weir plate tower hot water supply, in particular to an overflow weir plate tower spray water rapid heating device which comprises a hot water tank, a steam mixer and an overflow weir plate tower, the steam mixer is communicated with a mother liquor water pipeline and a steam pipeline, and a first hot water pipeline is communicated between the steam mixer and the hot water tank. The hot water tank is communicated with an exhaust pipeline, a second hot water pipeline is communicated between the hot water tank and the overflow weir plate tower, the overflow weir plate tower is communicated with a PVC slurry pipeline, a vinyl chloride gas pipeline and a PVC slurry desorption pipeline. The overflow weir plate tower is reasonable and compact in structure and convenient to use, steam and mother liquor water are mixed and heated through the steam mixer and then fed into the hot water tank for temporary storage, steam consumption of hot water supply of the overflow weir plate tower is reduced, cost is saved for enterprises, and the overflow weir plate tower has the advantages of being safe, labor-saving, simple, convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water supply of overflow weir plate towers, in particular to a rapid temperature-raising device for spraying water of overflow weir plate towers. Background Art

[0002] The overflow weir tower in the polymerization workshop of a certain enterprise uses hot water at 90℃ to 95℃ to spray the undesorbed PVC slurry to obtain the desorbed PVC slurry and gas phase vinyl chloride. The hot water comes from the hot water tank. The mother liquid water at 65℃ to 70℃ is used to replenish the hot water tank, and then low-pressure steam is input into the hot water tank to heat the mother liquid water to 90℃ to 95℃. However, during this heating process, the hot water tank frequently experiences gas shock due to the direct input of low-pressure steam into the hot water tank. At the same time, the exhaust pipeline at the top of the hot water tank needs to continuously discharge steam to prevent gas shock. In the end, the steam loss of the hot water supply of the overflow weir tower reached 0.65 tons / h, and the cost was about 44.2 yuan / h, which brought great economic losses to the enterprise. The large amount of steam required for the hot water supply of the overflow weir tower has become a technical problem that is difficult for the enterprise to overcome. Summary of the invention

[0003] The utility model provides an overflow weir tower spray water rapid heating device, which overcomes the above-mentioned shortcomings of the prior art and can effectively solve the problem of large steam consumption in the existing overflow weir tower hot water supply system.

[0004] The technical scheme of the utility model is achieved through the following measures: an overflow weir tower spray water rapid heating device, comprising a hot water tank, a steam mixer, an overflow weir tower, a liquid inlet of the steam mixer fixedly connected with a mother liquid water pipeline, an air inlet at the top of the steam mixer fixedly connected with a steam pipeline, a first hot water pipeline fixedly connected between a liquid outlet of the steam mixer and a liquid inlet at the top of the hot water tank, an exhaust pipeline fixedly connected at the top of the hot water tank, a second hot water pipeline fixedly connected between a liquid outlet at the bottom of the hot water tank and a liquid inlet at the top of the overflow weir tower, a PVC slurry pipeline fixedly connected at the upper feed inlet of the overflow weir tower, a vinyl chloride gas pipeline fixedly connected at the top air outlet of the overflow weir tower, and a desorbed PVC slurry pipeline fixedly connected at the bottom discharge port of the overflow weir tower.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] An overflow tower plate is arranged inside the overflow weir tower, and a spray pipe is arranged on the upper part of the overflow tower plate.

[0007] The liquid outlet of the second hot water pipeline is fixedly connected to the liquid inlet of the spray pipe.

[0008] A first remote temperature measuring instrument is fixedly arranged on the overflow weir plate tower.

[0009] A remote level gauge and a second remote temperature measuring instrument are fixedly arranged on the hot water tank.

[0010] A first circulation pump is fixedly installed on the second hot water pipeline.

[0011] A third hot water pipeline is fixedly connected between the second hot water pipeline between the liquid inlet and the liquid outlet of the first circulation pump.

[0012] A second circulation pump is fixedly installed on the third hot water pipeline.

[0013] A first solenoid valve is fixedly installed on the above-mentioned mother liquor water pipeline, a second solenoid valve is fixedly installed on the steam pipeline, a third remote temperature measuring instrument is fixedly installed on the first hot water pipeline, an exhaust valve is fixedly installed on the exhaust pipeline, and a third solenoid valve is fixedly installed on the second hot water pipeline between the liquid outlet at the bottom of the hot water tank and the third hot water pipeline.

[0014] The above-mentioned device also includes a controller, and the first remote temperature measuring instrument, the remote liquid level gauge, the second remote temperature measuring instrument, the first circulation pump, the second circulation pump, the first solenoid valve, the second solenoid valve, the third remote temperature measuring instrument, the exhaust valve, and the third solenoid valve are all electrically connected to the controller.

[0015] The utility model has a reasonable and compact structure and is easy to use. It utilizes a steam mixer to mix mother liquid water and steam, firstly increases the mother liquid water temperature and then inputs it into a hot water tank, and finally the hot water in the hot water tank enters an overflow weir plate tower for spraying. This overflow weir plate tower hot water supply method not only saves steam consumption, but also avoids the occurrence of gas shock in the hot water tank, and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0017] Attached Figure 1 The codes are as follows: 1 for hot water tank, 2 for steam mixer, 3 for overflow weir tower, 4 for mother liquor water pipeline, 5 for steam pipeline, 6 for the first hot water pipeline, 7 for exhaust pipeline, 8 for the second hot water pipeline, 9 for PVC slurry pipeline, 10 for vinyl chloride gas pipeline, 11 for separation PVC slurry pipeline, 12 for overflow tower plate, 13 for spray pipe, 14 for the first remote temperature measuring instrument, 15 for the remote liquid level gauge, 16 for the second remote temperature measuring instrument, 17 for the first circulation pump, 18 for the third hot water pipeline, 19 for the second circulation pump, 20 for the first solenoid valve, 21 for the second solenoid valve, 22 for the third remote temperature measuring instrument, 23 for the exhaust valve, and 24 for the third solenoid valve. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0019] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.

[0020] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0021] The present invention is further described below in conjunction with the embodiments and drawings:

[0022] Embodiment 1: As attached Figure 1 As shown, the overflow weir tower spray water rapid heating device comprises a hot water tank 1, a steam mixer 2, and an overflow weir tower 3. The liquid inlet of the steam mixer 2 is fixedly connected with a mother liquid water pipeline 4, the top air inlet of the steam mixer 2 is fixedly connected with a steam pipeline 5, the liquid outlet of the steam mixer 2 and the top liquid inlet of the hot water tank 1 are fixedly connected with a first hot water pipeline 6, the top of the hot water tank 1 is fixedly connected with an exhaust pipeline 7, the bottom of the hot water tank 1 is fixedly connected with a second hot water pipeline 8, the upper feed inlet of the overflow weir tower 3 is fixedly connected with a PVC slurry pipeline 9, the top air outlet of the overflow weir tower 3 is fixedly connected with a vinyl chloride gas pipeline 10, and the bottom discharge port of the overflow weir tower 3 is fixedly connected with a desorbed PVC slurry pipeline 11.

[0023] The required spray water temperature of the overflow weir tower 3 is 90°C to 95°C, the process water temperature entering the mother liquid water pipeline 4 is 65°C to 70°C, and the low-pressure steam and the process water at 65°C to 70°C enter the steam mixer 2 for mixing, and then the process water temperature is increased to 90°C to 95°C and input into the hot water tank 1. The hot water tank 1 provides hot water according to the amount of hot water required by the overflow weir tower 3.

[0024] The above overflow weir tower spray water rapid heating device can be further optimized and / or improved according to actual needs:

[0025] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 As shown, an overflow plate 12 is arranged inside the overflow weir plate tower 3 , and a spray pipe 13 is arranged on the top of the overflow plate 12 .

[0026] As needed, one or more overflow tower plates 12 can be set in the overflow weir tower 3, and a spray pipe 13 is set between the upper and lower overflow tower plates 12. One or more hot water diversion pipelines can be set between the second hot water pipeline 8 and the overflow weir tower 3 as needed, and the liquid outlet of the hot water diversion pipeline is fixedly connected to the liquid inlet of the corresponding spray pipe 13.

[0027] Embodiment 3: It differs from Embodiment 1 to Embodiment 2 in that: Figure 1 As shown, the liquid outlet of the second hot water pipeline 8 is fixedly connected to the liquid inlet of the spray pipe 13.

[0028] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 As shown, a first remote temperature measuring instrument 14 is fixedly arranged on the overflow weir tower 3 .

[0029] As required, the overflow weir tower 3 between the upper and lower overflow tower plates 12 is provided with a first remote temperature measuring instrument 14 .

[0030] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 1 As shown, a remote level gauge 15 and a second remote temperature measuring instrument 16 are fixedly arranged on the hot water tank 1 .

[0031] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 1 As shown, a first circulation pump 17 is fixedly installed on the second hot water pipeline 8 .

[0032] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 1 As shown, a third hot water pipeline 18 is fixedly connected between the second hot water pipeline 8 between the liquid inlet and the liquid outlet of the first circulation pump 17 .

[0033] Embodiment 8: It differs from Embodiments 1 to 7 in that: Figure 1 As shown, a second circulation pump 19 is fixedly installed on the third hot water pipeline 18 .

[0034] Embodiment 9: It differs from Embodiments 1 to 8 in that: Figure 1 As shown, a first solenoid valve 20 is fixedly installed on the mother liquid water pipeline 4, a second solenoid valve 21 is fixedly installed on the steam pipeline 5, a third remote temperature measuring instrument 22 is fixedly installed on the first hot water pipeline 6, an exhaust valve 23 is fixedly installed on the exhaust pipeline 7, and a third solenoid valve 24 is fixedly installed on the second hot water pipeline 8 between the bottom liquid outlet of the hot water tank 1 and the third hot water pipeline 18.

[0035] Embodiment 10: It differs from Embodiments 1 to 9 in that: Figure 1As shown, the device also includes a controller, and the first remote temperature measuring instrument 14, the remote liquid level meter 15, the second remote temperature measuring instrument 16, the first circulation pump 17, the second circulation pump 19, the first solenoid valve 20, the second solenoid valve 21, the third remote temperature measuring instrument 22, the exhaust valve 23, and the third solenoid valve 24 are all electrically connected to the controller.

[0036] As needed, the opening of the second solenoid valve 21 can be adjusted by the temperature value measured by the third remote temperature measuring instrument 22 to increase or decrease the steam input; the opening of the first solenoid valve 20 and the third solenoid valve 24 can be adjusted by the liquid level value of the remote liquid level meter 15 to maintain a sustainable supply of hot water required for the overflow weir tower 3; when the temperature value measured by the second remote temperature measuring instrument 16 exceeds the temperature value required by the hot water tank 1 process, exhaust valve 23 can be used for exhaust and cooling.

[0037] According to the needs, the pipelines and equipment of the overflow weir tower spray water rapid heating device can also be equipped with conventional valves, thermometers and pressure gauges known in the art according to production needs. The controller is a DCS controller, and the model of the DCS controller can be the CS3000 controller produced by Yokogawa Corporation of Japan.

[0038] The new method reduces the heating time of the mother liquid water in the hot water tank 1 and also reduces the steam consumption, thus saving 115,800 yuan of low-pressure steam each year and avoiding the risk of gas shock damage to the hot water tank 1.

[0039] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0040] The use process of the embodiment of the utility model is as follows: first, process water (65°C to 70°C) enters the steam mixer 2 through the mother liquid water pipeline 4, and low-pressure steam enters the steam mixer 2 through the steam pipeline 5 to mix with the process water to obtain high-temperature hot water (90°C to 95°C); then, the high-temperature hot water enters the hot water tank 1 through the first hot water pipeline 6 for temporary storage; then, the undesorbed PVC slurry enters the overflow weir plate tower 3 through the desorbed PVC slurry pipeline 9; at the same time, the high-temperature hot water in the hot water tank 1 enters the spray pipe 13 through the second hot water pipeline 8, and the high-temperature hot water sprays the undesorbed PVC slurry on the overflow tower plate 12 (a high-temperature steam environment is also required during the desorption of the PVC slurry) to obtain vinyl chloride gas and desorbed vinyl chloride slurry; finally, the vinyl chloride gas enters the downstream process system through the vinyl chloride gas pipeline 10, and the desorbed PVC slurry enters the downstream process system through the desorbed PVC slurry pipeline 11.

Claims

1. A rapid heating device for spraying water of an overflow weir tower, characterized in that It includes a hot water tank, a steam mixer, and an overflow weir tower. The liquid inlet of the steam mixer is fixedly connected with a mother liquid water pipeline, the air inlet at the top of the steam mixer is fixedly connected with a steam pipeline, the liquid outlet of the steam mixer and the liquid inlet at the top of the hot water tank are fixedly connected with a first hot water pipeline, the top of the hot water tank is fixedly connected with an exhaust pipeline, the bottom of the hot water tank is fixedly connected with a second hot water pipeline, the upper feed inlet of the overflow weir tower is fixedly connected with a PVC slurry pipeline, the air outlet at the top of the overflow weir tower is fixedly connected with a vinyl chloride gas pipeline, and the bottom discharge port of the overflow weir tower is fixedly connected with a desorbed PVC slurry pipeline.

2. The overflow weir tower spray water rapid heating device according to claim 1 is characterized in that An overflow tower plate is arranged inside the overflow weir tower, and a spray pipe is arranged on the upper part of the overflow tower plate.

3. The overflow weir tower spray water rapid heating device according to claim 1 or 2, characterized in that The liquid outlet of the second hot water pipeline is fixedly connected with the liquid inlet of the spray pipe.

4. The overflow weir tower spray water rapid heating device according to claim 3 is characterized in that A first remote temperature measuring instrument is fixedly arranged on the overflow weir tower.

5. The overflow weir tower spray water rapid heating device according to claim 1, 2 or 4, characterized in that A remote level gauge and a second remote temperature measuring instrument are fixedly arranged on the hot water tank.

6. The overflow weir tower spray water rapid heating device according to claim 5, characterized in that A first circulation pump is fixedly installed on the second hot water pipeline.

7. The overflow weir tower spray water rapid heating device according to claim 6, characterized in that A third hot water pipeline is fixedly connected between the second hot water pipeline between the liquid inlet and the liquid outlet of the first circulation pump.

8. The overflow weir tower spray water rapid heating device according to claim 7, characterized in that A second circulation pump is fixedly installed on the third hot water pipeline.

9. The overflow weir tower spray water rapid heating device according to claim 6, 7 or 8, characterized in that A first solenoid valve is fixedly installed on the mother liquid water pipeline, a second solenoid valve is fixedly installed on the steam pipeline, a third remote temperature measuring instrument is fixedly installed on the first hot water pipeline, an exhaust valve is fixedly installed on the exhaust pipeline, and a third solenoid valve is fixedly installed on the second hot water pipeline between the liquid outlet at the bottom of the hot water tank and the third hot water pipeline.

10. The overflow weir tower spray water rapid heating device according to claim 9, characterized in that It also includes a controller, and the first remote temperature measuring instrument, the remote liquid level meter, the second remote temperature measuring instrument, the first circulation pump, the second circulation pump, the first solenoid valve, the second solenoid valve, the third remote temperature measuring instrument, the exhaust valve, and the third solenoid valve are all electrically connected to the controller.

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