Tower type reaction container for refining saline water

Abstract

The utility model relates to a salt water refining tower type reaction container which comprises a column tank, an overflow pipe arranged at the upper part of the column tank, a cone tank fixedly connected with the bottom of the column tank, a slag discharge port arranged at the bottom of the cone tank, a brine pipe and an alkaline water pipe arranged in the middle of the cone tank, a medicament pipe arranged in the middle of the column tank, and a filter screen fixedly connected with the lower part of the overflow pipe, a spoiler is arranged below the medicament pipe, a stirring shaft is arranged in the column tank, and the stirring shaft is rotationally connected with the filter screen and the spoiler respectively. According to the salt water refining tower type reaction container, the spoiler is used for blocking the influence of stirring on sediment at the bottom, and the sediment is isolated in the reaction tank through the filter screen below the overflow pipe.

Description

Technical Field

[0001] The utility model relates to chemical technology, in particular to a salt water refining tower type reaction container. Background Art

[0002] In the production of ion-exchange membrane chlor-alkali, the refining process of primary brine is a crucial step. The effect of brine refining directly affects the quality and output of the product. The process of brine refining is complicated and various salts in the crude brine need to be removed. In order to speed up the reaction, a stirring device is usually added.

[0003] Since adding a stirring device to the reactor is not conducive to the sedimentation of precipitates, the overflowing refined brine will be mixed with a large amount of precipitates or flocculants, which will affect the quality of the refined brine and cause a decrease in the brine refining efficiency. Utility Model Content

[0004] The utility model aims to provide a brine refining tower reaction vessel, which is used to solve the problems that stirring work in the brine refining process is not conducive to the sedimentation of precipitates, overflowing refined brine is mixed with precipitates and flocculants, and the brine refining efficiency is low.

[0005] In order to solve the above problems, the utility model provides a brine refining tower reaction vessel, including a column tank, an overflow pipe is provided on the upper part of the column tank, a conical tank is fixedly connected to the bottom of the column tank, a slag discharge port is provided at the bottom of the conical tank, a brine pipe and an alkaline water pipe are provided in the middle of the conical tank, a chemical pipe is provided in the middle of the column tank, a filter is fixedly connected under the overflow pipe, a spoiler is provided under the chemical pipe, a stirring shaft is provided in the column tank, and the stirring shaft is rotatably connected to the filter and the spoiler respectively.

[0006] The utility model provides a salt water refining tower reaction vessel which also has the following technical features:

[0007] Furthermore, a concave ash collecting plate is provided on the top of the cone tank, and a through hole is provided in the center of the ash collecting plate.

[0008] Furthermore, the spoiler is divided into two parts which are staggered in an upper and lower manner, and a plurality of slag discharge holes are arranged on the outer edge of the spoiler.

[0009] Furthermore, the stirring shaft is provided with upper and lower stirring rods, the upper stirring rods are located between the spoiler and the filter screen, and the lower stirring rods are located between the spoiler and the ash collecting plate, and the number of the upper stirring rods is greater than that of the lower stirring rods.

[0010] Furthermore, a scraping device is fixedly connected to the stirring shaft.

[0011] Furthermore, the scraping device includes a base and a scraper. The base is provided with a groove adapted to the scraper. The scraper slides up and down in the groove. A plurality of springs are fixedly connected to the bottom of the scraper. The other end of the spring is fixedly connected to the bottom surface of the groove. The scraper contacts the bottom surface of the filter.

[0012] Furthermore, a plurality of right-angled triangular ribs are provided under the filter screen, and the long right-angled sides of the ribs are fixedly connected to the filter screen.

[0013] Furthermore, a motor is fixedly connected to the top of the column tank, and a driving shaft of the motor is fixedly connected to the stirring shaft.

[0014] The utility model has the following beneficial effects: the brine refining tower reaction vessel described in the application adopts a spoiler to block the influence of stirring on the bottom sediment, and uses the filter screen under the overflow pipe to isolate the sediment in the reaction tank, so as to prevent the sediment from flowing into the next process with the refined brine, thereby improving the quality and efficiency of the refined brine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional axonometric schematic diagram of a brine refining tower reaction vessel according to an embodiment of the utility model;

[0016] Figure 2 The brine refining tower reaction vessel of the utility model embodiment Figure 1 A zoomed in view of the node in the middle;

[0017] Figure 3 This is an axonometric schematic diagram of a brine refining tower reaction vessel according to an embodiment of the utility model;

[0018] Figure 4 It is a front cross-sectional view of a brine refining tower reaction vessel according to an embodiment of the utility model;

[0019] Figure 5 The brine refining tower reaction vessel of the utility model embodiment Figure 4 Enlarged view of node B in the middle.

[0020] (1-column tank, 2-overflow pipe, 3-conical tank, 4-slag outlet, 5-brine pipe, 6-alkali water pipe, 7-medicine pipe, 8-filter screen, 81-rib, 9-spoiler, 10-stirring shaft, 11-ash collecting plate, 12-through hole, 13-slag discharge hole, 14-stirring rod, 151-base, 152-scraper, 153-groove, 154-spring, 16-motor) DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0022] like Figures 1 to 5In the embodiment of the brine refining tower reaction vessel of the utility model shown, the brine refining tower reaction vessel includes a column tank 1, an overflow pipe 2 is provided on the upper part of the column tank 1, a conical tank 3 is fixedly connected to the bottom of the column tank 1, a slag discharge port 4 is provided at the bottom of the conical tank 3, a brine pipe 5 and an alkaline water pipe 6 are provided in the middle of the conical tank 3, a chemical pipe 7 is provided in the middle of the column tank 1, a filter screen 8 is fixedly connected under the overflow pipe 2, a spoiler 9 is provided under the chemical pipe 7, a stirring shaft 10 is provided in the column tank 1, and the stirring shaft 10 is rotatably connected to the filter screen 8 and the spoiler 9 respectively.

[0023] Specifically, crude brine is introduced into the conical tank 3 through the brine pipe 5, and at the same time, a mixed solution of caustic soda and soda ash is introduced from the alkaline water pipe 6, and mixed and reacted in the conical tank 3 to produce precipitates and flocculants, which are precipitated in the conical tank 3. The sodium-salt water mixed solution containing a small amount of precipitates enters the column tank 1, and the stirring shaft 10 is rotated to accelerate the reaction speed of the mixed solution. Part of the precipitate falls, and the mixed solution continues to rise and passes over the spoiler. Sodium hypochlorite is introduced into the column tank 1 through the reagent pipe 7, and stirred to make it fully react. After the final reaction is completed, the precipitate is filtered through the filter screen 8, and the once refined brine flows out through the overflow pipe 2, and the precipitate is discharged from the reactor through the slag discharge port 4.

[0024] In one embodiment of the present application, preferably, a concave ash collecting plate 11 is provided on the top of the conical tank 3, and a through hole 12 is provided in the center of the ash collecting plate 11, so that the sediment in the column tank 1 gathers on the ash collecting plate 11 and enters the conical tank 3 through the through hole 12, so as to facilitate the discharge of the sediment.

[0025] In one embodiment of the present application, preferably, the spoiler 9 is divided into two parts that are staggered in an upper and lower manner, and a plurality of slag discharge holes 13 are provided on the outer edge of the spoiler 9. The spoiler 9 is used to avoid the influence of stirring on the sediment reaction layer, and the slag discharge holes 13 are used to allow the sediment filtered out by the filter screen 8 to settle onto the ash collecting plate 11 through the slag discharge holes 13.

[0026] In one embodiment of the present application, preferably, an upper and lower layer of stirring rods 14 are provided on the stirring shaft 10, the upper layer of stirring rods 14 are located between the spoiler 9 and the filter screen 8, and the lower layer of stirring rods 14 are located between the spoiler 9 and the ash collecting plate 11. The number of upper stirring rods 14 is greater than the number of lower stirring rods 14. The first stage reaction of the mixed liquid above the spoiler 9 has been completed, and the stirring is accelerated to make the second stage reaction more sufficient and more efficient. The reason why there are fewer stirring rods 14 on the lower layer is to avoid stirring up the sediment due to excessive stirring. When the upper layer of stirring rods 14 stirs, the spoiler 9 blocks the influence on the mixed liquid under the spoiler 9.

[0027] In one embodiment of the present application, preferably, a scraping device is fixedly connected to the stirring shaft 10 to scrape off the sediment attached to the filter screen 8 to prevent the filter screen 8 from being blocked and affecting the filtering efficiency.

[0028] In one embodiment of the present application, preferably, the scraping device includes a base 151 and a scraper 152, the base 151 is provided with a groove 153 adapted to the scraper 152, the scraper 152 slides up and down in the groove 153, and a plurality of springs 154 are fixedly connected to the bottom of the scraper 152, and the other end of the spring 154 is fixedly connected to the bottom surface of the groove 153, and the scraper 152 is in contact with the bottom surface of the filter 8, so as to make the scraper 152 always in contact with the filter 8, thereby improving the cleaning effect.

[0029] In one embodiment of the present application, preferably, a plurality of right-angled triangular ribs 81 are provided under the filter 8, and the long right-angled sides of the ribs 81 are fixedly connected to the filter 8. The inclined surface of the triangular ribs 81 can squeeze the scraper 152 when the stirring shaft 10 rotates. When the scraper 152 reaches the highest point of the inclined surface, it is completely squeezed, and then it is instantly released after passing over the ribs 81, so that the scraper 152 hits the filter 8. The intermittent hitting of the filter 8 makes it difficult for sediment to adhere to the filter 8.

[0030] In one embodiment of the present application, preferably, a motor 16 is fixedly connected to the top of the column tank 1, and a driving shaft of the motor 16 is fixedly connected to the stirring shaft 10 for driving the stirring shaft 10 to rotate.

[0031] In summary, the brine refining tower reaction container in the above embodiment of the utility model, specifically, crude brine is introduced into the conical tank 3 through the brine pipe 5, and at the same time, caustic soda and soda ash mixed solution is introduced from the alkaline water pipe 6, mixed and reacted in the conical tank 3 to produce precipitates and flocculants, which are precipitated in the conical tank 3. The sodium brine mixed solution containing a small amount of precipitates enters the column tank 1 from the through hole 12 of the ash collecting plate 11, and the motor 16 is started to rotate the stirring shaft 10 to accelerate the reaction speed of the mixed solution. Part of the precipitate falls, and the mixed solution continues to rise and passes over the spoiler 9. Sodium hypochlorite is introduced into the column tank 1 through the reagent pipe 7, and stirred to make it fully react. After the final reaction is completed, the precipitate is filtered through the filter screen 8, and the scraping device on the stirring shaft 10 scrapes off the precipitate attached to the filter screen 8, and the precipitate is precipitated on the ash collecting plate 11 through the slag discharge hole 13 on the spoiler 9. The once refined brine flows out through the overflow pipe 2, and the precipitate is discharged from the reactor through the slag discharge port 4. The device uses a spoiler to block the influence of stirring on the sediment at the bottom, and uses the filter under the overflow pipe to isolate the sediment in the reaction tank.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A brine refining tower reaction vessel, characterized in that: It comprises a column tank, an overflow pipe is provided on the upper part of the column tank, a conical tank is fixedly connected to the bottom of the column tank, a slag discharge port is provided at the bottom of the conical tank, a brine pipe and an alkaline water pipe are provided in the middle of the conical tank, a chemical pipe is provided in the middle of the column tank, a filter is fixedly connected under the overflow pipe, a spoiler is provided under the chemical pipe, a stirring shaft is provided in the column tank, and the stirring shaft is rotatably connected to the filter and the spoiler respectively.

2. The brine refining tower reaction vessel according to claim 1, characterized in that: A concave ash collecting plate is arranged on the top of the cone tank, and a through hole is arranged at the center of the ash collecting plate.

3. The brine refining tower reaction vessel according to claim 2, characterized in that: The spoiler is divided into two parts which are staggered in an upper and lower manner, and a plurality of slag discharge holes are arranged on the outer edge of the spoiler.

4. The brine refining tower reaction vessel according to claim 3, characterized in that: The stirring shaft is provided with upper and lower stirring rods, the upper stirring rods are located between the spoiler and the filter screen, the lower stirring rods are located between the spoiler and the ash collecting plate, and the number of the upper stirring rods is greater than that of the lower stirring rods.

5. The brine refining tower reaction vessel according to claim 4, characterized in that: A scraping device is fixedly connected to the stirring shaft.

6. The brine refining tower reaction vessel according to claim 5, characterized in that: The scraping device includes a base and a scraper, one end of the base is fixedly connected to the stirring shaft, the base is provided with a groove adapted to the scraper, the scraper slides up and down in the groove, a plurality of springs are fixedly connected to the bottom of the scraper, the other end of the spring is fixedly connected to the bottom surface of the groove, and the scraper abuts against the bottom surface of the filter.

7. The brine refining tower reaction vessel according to claim 6, characterized in that: A plurality of right-angled triangular ribs are arranged under the filter screen, and the long right-angled sides of the ribs are fixedly connected to the filter screen.

8. The brine refining tower reaction vessel according to claim 7, characterized in that: A motor is fixedly connected to the top of the column tank, and a driving shaft of the motor is fixedly connected to the stirring shaft.

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