Evaporative crystallization device for resource utilization of chemical waste salt

Abstract

The utility model relates to an evaporative crystallization device for resource utilization of chemical waste salt, which comprises a crystallization tank, the bottom of the crystallization tank is a conical hopper, and a heating water jacket is arranged on the side wall of the crystallization tank, and is technically characterized in that a longitudinal stand pipe is arranged in the center of the crystallization tank, and the upper end of the longitudinal stand pipe is led out of a top plate of the crystallization tank and is fixedly provided with a flange plate; a plurality of branches communicated with the longitudinal stand pipe are evenly arranged at the lower end of the longitudinal stand pipe, the conical hopper is provided with an annular heating interlayer, the lower end of each branch is communicated with the annular heating interlayer, a discharging opening is formed in the center of the conical hopper, a water discharging opening is formed in the low-position end of the annular heating interlayer, and two multi-section telescopic cylinders are symmetrically arranged on a top plate of the crystallizing tank. A scraping plate is arranged in the crystallizing tank, a through hole corresponding to the longitudinal stand pipe is formed in the center of the scraping plate, and the upper surface of the scraping plate is fixedly connected with the lower ends of cylinder rods of the two multi-section telescopic cylinders. According to the device, the crystallization speed is obviously improved, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resource utilization of chemical waste salt, and in particular to an evaporation crystallization device for resource utilization of chemical waste salt. Background Art

[0002] In the industrial production process, a large amount of waste salt is often generated. If it is not recycled and reused, it will not only cause environmental pollution but also waste resources. Therefore, the trend of waste salt resource utilization is becoming more and more significant. In the process of waste salt resource utilization, evaporation crystallization equipment is often used.

[0003] For example, CN 220520190 U discloses a waste salt nanofiltration concentrated water evaporation crystallization device based on waste salt source utilization, which includes a crystallizer, a heating plate, a cleaning mechanism and a preheating mechanism. The cleaning mechanism includes a screw, a sleeve threaded on the outer wall of the screw, and a ring tube fixedly connected to the outside of the sleeve, and a scraper fixedly connected to the bottom of the ring tube; the preheating mechanism includes a preheating chamber, multiple groups of serpentine tubes fixedly connected to the inside of the preheating chamber, and a steam pipe. The device is intended to use the cleaning mechanism to drive the ring tube and scraper to move up and down the inside of the crystallizer using the screw, cleaning the inner wall, and by setting up a preheating mechanism, using the steam pipe to recover the steam of the crystallizer and cooperating with the serpentine tube to preheat the feed of the crystallizer, so as to facilitate the recycling of waste heat. However, there are still problems: using the heating plate outside the crystallizer as the crystallization heat source, the heat transfer efficiency is low, the crystallization speed of the material in the center of the tank is slow, which is not conducive to improving production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an evaporation crystallization device for resource utilization of chemical waste salt with reasonable structure and reliable use to solve the above problems, significantly improve the crystallization speed, and thus improve production efficiency.

[0005] The technical solution of the utility model is:

[0006] The invention discloses an evaporation crystallization device for resource utilization of chemical waste salt, comprising a crystallization tank, the bottom of the crystallization tank being a conical hopper, and the side wall of the crystallization tank being provided with a heating water jacket. The technical key points are: a longitudinal riser is provided in the center of the crystallization tank, the upper end of the longitudinal riser leads out of the top plate of the crystallization tank and is fixed with a flange, the lower end of the longitudinal riser is evenly provided with a plurality of branches connected thereto, the conical hopper is provided with an annular heating interlayer, the lower end of each branch is respectively connected with the annular heating interlayer, a discharge port is provided in the center of the conical hopper, and a drain port is provided at the low end of the annular heating interlayer, two multi-section telescopic cylinders are symmetrically provided on the top plate of the crystallization tank, a scraper is provided in the crystallization tank, a through hole corresponding to the longitudinal riser is provided in the center of the scraper, and the upper surface of the scraper is connected and fixed to the lower ends of the cylinder rods of the two multi-section telescopic cylinders.

[0007] The above-mentioned evaporation crystallization device for resource utilization of chemical waste salt has a feed port and an exhaust port on the top plate of the crystallization tank, and a first avoidance hole corresponding to the feed port and a second avoidance hole corresponding to the exhaust port.

[0008] In the above-mentioned evaporation and crystallization device for resource utilization of chemical waste salt, the branch is an inclined pipeline, the starting end of the branch is the high end, and the high end is lower than the upper edge of the cone bucket.

[0009] The above-mentioned evaporation crystallization device for resource utilization of chemical waste salt has a plurality of longitudinal fins evenly arranged on the inner surface of the side wall of the crystallization tank, and the edge of the scraper is provided with avoidance notches corresponding to the longitudinal fins, and the inner surface of the avoidance notch is in contact with the longitudinal fins.

[0010] The beneficial effects of the utility model are:

[0011] 1. A longitudinal riser is arranged in the center of the crystallizer to introduce the heating medium, which then enters the annular heating interlayer through various branches and is finally discharged from the drain port. The above structure is applied to the crystallizer and cooperates with the heating water jacket on the side wall of the crystallizer to achieve a heating effect on the material in the crystallizer. The material is heated both inside and outside, which significantly improves the evaporation and crystallization speed, thereby improving production efficiency.

[0012] 2. Two multi-section telescopic cylinders are used to drive the scraper downward to clean the inner wall of the crystallization tank. At the same time, the outer wall of the longitudinal riser can also be cleaned. The longitudinal riser also plays a guiding role.

[0013] 3. The setting of longitudinal fins further improves the heat exchange efficiency, thereby increasing the evaporation and crystallization speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 Top view of the middle scraper.

[0016] In the figure: 1. Multi-section telescopic cylinder, 2. Top plate, 3. Crystallization tank, 4. Heating water jacket, 5. Longitudinal fins, 6. Longitudinal riser, 7. Feed inlet, 8. Exhaust port, 9. Scraper, 10. Branch, 11. Annular heating interlayer, 12. Drain, 13. Discharge port, 14. Avoidance gap, 15. First avoidance hole, 16. Second avoidance hole. DETAILED DESCRIPTION

[0017] The utility model is described in detail according to the accompanying drawings.

[0018] like Figure 1 、 Figure 2As shown, the evaporation crystallization device for resource utilization of chemical waste salt includes a crystallization tank 3, the bottom of the crystallization tank 3 is a cone hopper, and the side wall of the crystallization tank 3 is provided with a heating water jacket 4.

[0019] Wherein, a longitudinal riser 6 is provided at the center of the crystallizer 3, and the upper end of the longitudinal riser 6 leads out of the top plate 2 of the crystallizer 3 and is fixed with a flange. The lower end of the longitudinal riser 6 is evenly provided with a plurality of branches 10 connected thereto, and the cone hopper is provided with an annular heating interlayer 11, and the lower end of each branch 10 is respectively connected to the annular heating interlayer 11. A discharge port 13 is provided at the center of the cone hopper, and a drain port 12 is provided at the lower end of the annular heating interlayer 11. In this embodiment, the branch 10 is an inclined pipeline, and the starting end of the branch 10 is the high end, and the high end is lower than the upper edge of the cone hopper.

[0020] The top plate 2 of the crystallizer 3 is symmetrically provided with two multi-section telescopic cylinders 1, and a scraper 9 is provided inside the crystallizer 3. The center of the scraper 9 is provided with a through hole corresponding to the longitudinal riser 6, and the upper surface of the scraper 9 is connected and fixed to the lower ends of the cylinder rods of the two multi-section telescopic cylinders 1. In this embodiment, a feed port 7 and an exhaust port 8 are provided on the top plate 2 of the crystallizer 3, and a first avoidance hole 15 corresponding to the feed port 7 and a second avoidance hole 16 corresponding to the exhaust port 8 are provided on the scraper 9. A plurality of longitudinal fins 5 are evenly provided on the inner surface of the side wall of the crystallizer 3, and avoidance notches 14 corresponding to the longitudinal fins 5 are provided on the edge of the scraper 9, and the inner surface of the avoidance notch 14 is in contact with the longitudinal fins 5.

[0021] Working principle:

[0022] During use, the crystallizer 3 is preheated by the heating water jacket 4, the vertical pipe 6, the branch 10, and the annular heating interlayer 11. Then, material is introduced into the crystallizer 3 through the feed port 7. Under the dual action of the heating water jacket 4, the vertical pipe 6, the branch 10, and the annular heating interlayer 11, an enhanced heating effect is achieved on both the inside and outside of the material, thereby improving the evaporation and crystallization efficiency.

[0023] When the crystallization tank 3 needs to be cleaned after unloading, the material on the inner wall and the longitudinal riser 6 can be scraped off by the scraper 9, and cleaning water can also be added through the feed port 7 for thorough cleaning.

[0024] The above detailed description of the embodiments of the present invention is intended to be a preferred embodiment of the present invention and should not be construed as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of this patent.

Claims

1. An evaporation crystallization device for resource utilization of chemical waste salt, comprising a crystallization tank, the bottom of which is a conical hopper, and the side wall of which is provided with a heating water jacket, characterized in that: A longitudinal riser is provided at the center of the crystallizer, the upper end of the longitudinal riser leads out of the top plate of the crystallizer and fixes a flange, the lower end of the longitudinal riser is evenly provided with a plurality of branches connected thereto, the cone hopper is provided with an annular heating interlayer, the lower end of each branch is respectively connected with the annular heating interlayer, a discharge port is provided at the center of the cone hopper, and a drain port is provided at the low end of the annular heating interlayer, the top plate of the crystallizer is symmetrically provided with two multi-section telescopic cylinders, a scraper is provided in the crystallizer, the center of the scraper is provided with a through hole corresponding to the longitudinal riser, and the upper surface of the scraper is connected and fixed to the lower ends of the cylinder rods of the two multi-section telescopic cylinders.

2. The evaporation crystallization device for resource utilization of chemical waste salt according to claim 1, characterized in that: A feed port and an exhaust port are provided on the top plate of the crystallization tank, and a first avoidance hole corresponding to the feed port and a second avoidance hole corresponding to the exhaust port are provided on the scraper.

3. The evaporation crystallization device for resource utilization of chemical waste salt according to claim 1, characterized in that: The branch is an inclined pipeline, the starting end of the branch is a high end, and the high end is lower than the upper edge of the cone bucket.

4. The evaporation crystallization device for resource utilization of chemical waste salt according to claim 1, characterized in that: The inner surface of the side wall of the crystallization tank is evenly provided with a plurality of longitudinal fins, the edge of the scraper is provided with avoidance notches corresponding to the longitudinal fins, and the inner surface of the avoidance notch is in contact with the longitudinal fins.

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