Reaction tank for producing calcium chloride solution through hydrochloric acid reaction without stopping production and cleaning tank

Abstract

The utility model discloses a reaction tank for producing a calcium chloride solution through hydrochloric acid reaction without stopping production and cleaning the tank. The reaction tank comprises a tank body, a feeding port, a circulating pump, a slag flushing valve, a coarse slag elutriation port, a coarse slag elutriation leg, a slag filtering grating, a slag discharging valve, a slag storage hopper, a slag discharging sight glass and a slag discharging valve, the inner wall of the tank body is fixedly connected with a filter residue grating, the bottom of the filter residue grating is provided with a coarse residue washing leg, and an outlet of the coarse residue washing leg is fixedly connected with a residue discharge valve; according to the utility model, the deslagging structure without stopping the production for cleaning the tank is designed, so that continuous deslagging in operation is realized, the production continuity is greatly improved, the production interruption and time loss caused by stopping the production for cleaning the tank are reduced, the procedure of manually cleaning the tank is omitted, the labor intensity of workers is obviously reduced, and the production efficiency is improved. And the elutriation and slag flushing part in the device can fully utilize small limestone blocks which are not completely reacted and continuously react and crush large limestone blocks, so that the utilization rate of the materials is increased.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel for producing calcium chloride solution by hydrochloric acid reaction without the need for shutdown and cleaning. Background Technology

[0002] In the modern chemical industry, hydrochloric acid is often produced as a byproduct. This byproduct is inexpensive, difficult to sell, and subject to strict transportation controls. Therefore, converting it into high-value-added anhydrous calcium chloride granules (by reacting to produce a calcium chloride solution and then granulating it) is a reasonable option for factories.

[0003] Because the limestone used in the reaction contains impurities (mainly internal nodules containing quartz sand that does not react with hydrochloric acid, hereinafter referred to as nodules), it will form waste residue. This part usually accounts for 10-15% of the weight of the quartz stone. After the existing reaction tank has been running for a period of time, it must be shut down to drain the residual acid and manually clean the tank to remove the residual quartz sand. Otherwise, the tank volume will be occupied by quartz sand, affecting the use effect. Utility Model Content

[0004] The purpose of this invention is to provide a reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a reaction tank for producing calcium chloride solution by hydrochloric acid reaction without stopping production for tank cleaning, including a tank body, a filter screen fixedly connected to the inner wall of the tank body, a coarse slag washing leg provided at the bottom of the filter screen, a slag discharge valve fixedly connected to the outlet of the coarse slag washing leg, a slag storage hopper connected to the output end of the slag discharge valve, and a slag discharge valve fixedly connected to the output end of the slag storage hopper.

[0006] As a further technical solution of this utility model, the tank body is provided with a circulation pump, the circulation pump is connected to the circulation pump, the output end of the circulation pump is connected to a slag flushing valve, the other end of the slag flushing valve is connected to a coarse slag washing port, and the coarse slag washing port is located on the coarse slag washing leg.

[0007] As a further technical solution of this utility model, the tank body is provided with a feeding port and an exhaust port.

[0008] As a further technical solution of this utility model, the tank body is provided with a discharge port.

[0009] As a further technical solution of this utility model, a slag discharge sight glass is provided on the outer wall of the slag storage hopper.

[0010] As a further technical solution of this utility model, the output end of the circulating pump is connected to a valve, and the other end of the valve is connected to a circulating return port, which is located on the tank body.

[0011] As a further technical solution of this utility model, one side of the valve is connected to an acid replenishment port.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model is designed with a slag discharge structure that does not require shutdown for tank cleaning, realizing continuous slag discharge during operation without the need for shutdown for tank cleaning, greatly improving the continuity of production, reducing production interruptions and time losses caused by shutdown for tank cleaning, eliminating the manual tank cleaning process, and significantly reducing the intensity of manual labor. The washing and flushing section in the device can make full use of the small pieces of limestone that have not been fully reacted, and continue to react and crush the larger pieces of limestone, improving the utilization rate of materials and reducing the waste of raw materials. Through the design of the reaction liquid circulation section, the circulation pump draws acid from the top of the reaction tank and enters the reaction tank from the bottom, realizing the rapid flushing reaction of the limestone in the bottom. At the same time, by using the concentrated acid of the reaction supplement combined with the flushing action of the circulation pump, the reaction sequence and reaction speed can be precisely controlled, ensuring that the quartz sand nodules are not blocked by limestone in the bottom of the reaction tank and pass smoothly through the filter screen, further optimizing the reaction process and improving the reaction efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0015] In the diagram: 1. Tank body; 2. Feeding port; 3. Vent; 4. Discharge port; 5. Circulation feed port; 6. Circulation pump; 7. Circulation return port; 8. Valve; 9. Acid replenishment port; 10. Slag flushing valve; 11. Coarse slag washing port; 12. Coarse slag washing leg; 13. Filter screen; 14. Slag discharge valve; 15. Slag storage hopper; 16. Slag discharge sight glass; 17. Slag discharge valve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see the appendix Figure 1 This utility model provides an embodiment of a hydrochloric acid reaction tank for producing calcium chloride solution without requiring shutdown for tank cleaning. The tank includes a tank body 1. A filter grid 13 is fixedly connected to the inner wall of the tank body 1. A coarse slag washing leg 12 is provided at the bottom of the filter grid 13. A slag discharge valve 14 is fixedly connected to the outlet of the coarse slag washing leg 12. The output end of the slag discharge valve 14 is conductively connected to a slag storage hopper 15. A slag discharge valve 17 is fixedly connected to the output end of the slag storage hopper 15. A circulation pump 6 is provided on the tank body 1. A slag flushing valve 10 is conductively connected to the circulation pump 6. The other end is connected to a coarse slag washing port 11, which is located on the coarse slag washing leg 12. The tank body 1 is provided with a feeding port 2 and an exhaust port 3. The feeding port 2 is used to feed raw materials, and the exhaust port 3 is used to regulate the gas environment inside the reaction tank to ensure that the gas generated during the reaction can be discharged in time, so as to avoid excessive pressure or gas accumulation in the tank from adversely affecting the reaction. The tank body 1 is provided with a discharge port 4, which is used to discharge calcium chloride solution. The outer wall of the slag storage hopper 15 is provided with a slag discharge sight glass 16, which is used to observe the condition of the slag in the coarse slag washing leg 12 to ensure good washing effect.

[0018] The output end of the circulating pump 6 is connected to a valve 8, and the other end of the valve 8 is connected to a circulating return port 7, which is located on the tank body 1. The valve 8 is used to control the circulation pipeline. The circulating pump 6 draws acid from the circulating extraction port 5 at the top of the reaction tank and quickly flushes the limestone through the circulating return port 7 at the bottom, promoting the preferential reaction consumption at the bottom and achieving precise control of the reaction sequence and reaction rate. This ensures that the quartz sand nodules are not blocked by the limestone at the bottom of the reaction tank and can pass smoothly through the filter screen 13. One side of the valve 8 is connected to an acid replenishment port 9, which is used to adjust the reaction rate with concentrated acid from the reaction feed and to provide acid for washing the coarse slag.

[0019] Working Principle: When using this invention to produce calcium chloride solution from hydrochloric acid, first ensure that all components of the reaction tank are intact. Check whether key components such as the filter screen 13, slag discharge valve 14, slag hopper 15, slag outlet valve 17, and circulating pump 6 are working properly. Add an appropriate amount of limestone into tank 1 through the feed port 2, close the feed port 2, and ensure the reaction tank is well-sealed. Begin introducing hydrochloric acid to react with the limestone. During the reaction, calcium chloride solution and quartz sand nodules will be produced as waste residue. The calcium chloride solution is discharged through the discharge port 4. Observe the reaction progress and adjust the hydrochloric acid flow rate as needed to control the reaction speed. Use the circulating pump 6 to draw acid from the circulating extraction port 5 at the top of the reaction tank and quickly flush the limestone through the circulating return port 7 at the bottom, promoting preferential reaction and consumption at the bottom. Simultaneously, the acid is drawn through the circulating pipeline... The acid feed port 9 is used to further adjust the reaction rate using concentrated acid from the reaction feed. Without affecting the reaction, the slag discharge valve 14 is opened to allow the quartz sand nodules and a small amount of reaction acid to enter the slag storage hopper 15. The slag discharge valve 14 is then closed, and the slag discharge valve 17 is opened to discharge the quartz sand nodules (slag) and a small amount of liquid from the slag storage hopper 15. The discharged quartz sand nodules are cleaned, and the slag discharge valve 17 is then closed, completing one slag discharge process during operation. The above slag discharge steps are repeated periodically as needed to maintain the cleanliness and efficient operation of the reaction tank. The acid from the outlet of the circulating pump 6 is used to wash the slag in the coarse slag washing leg 12 through the coarse slag washing port 11 to make full use of the small pieces of limestone that have not been fully reacted, to continue the reaction and crush the larger pieces of limestone, and to flush away the slag to prevent the slag from blocking the smooth opening and closing of the slag discharge valve 14.

[0020] The condition of the slag in the coarse slag washing leg 12 is observed through the slag discharge sight glass 16 on the slag hopper 15 to ensure good washing effect. The opening degree of the slag flushing valve 10 is adjusted as needed to ensure the flushing effect. Throughout the reaction process, parameters such as temperature, pressure, and reaction rate in the reaction tank are continuously monitored to ensure stable reaction. The flow rate of hydrochloric acid and the flow rate of the circulation pump 6 are adjusted in a timely manner according to the reaction situation to optimize the reaction conditions. The exhaust port 3 is used to regulate the gas environment in the reaction tank to ensure that the gas generated during the reaction can be discharged in time to avoid excessive pressure or gas accumulation in the tank, which may have an adverse effect on the reaction. The valve 8 is used to control the circulation pipeline.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, comprising a vessel body (1), characterized in that: A filter grid (13) is fixedly connected to the inner wall of the tank (1). A coarse slag washing leg (12) is provided at the bottom of the filter grid (13). A slag discharge valve (14) is fixedly connected to the outlet of the coarse slag washing leg (12). A slag storage hopper (15) is connected to the output end of the slag discharge valve (14). A slag discharge valve (17) is fixedly connected to the output end of the slag storage hopper (15).

2. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 1, is characterized in that: The tank body (1) is provided with a circulating material extraction port (5), and a circulating pump (6) is connected to the circulating material extraction port (5). The output end of the circulating pump (6) is connected to a slag flushing valve (10), and the other end of the slag flushing valve (10) is connected to a coarse slag washing port (11), and the coarse slag washing port (11) is located on the coarse slag washing leg (12).

3. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 2, is characterized in that: The tank (1) is provided with a feeding port (2) and an exhaust port (3).

4. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 2, is characterized in that: The tank (1) is provided with a discharge port (4).

5. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 1, is characterized in that: A slag discharge sight glass (16) is provided on the outer wall of the slag hopper (15).

6. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 2, is characterized in that: The output end of the circulating pump (6) is connected to a valve (8), and the other end of the valve (8) is connected to a circulating return port (7), which is located on the tank (1).

7. The reaction vessel for producing calcium chloride solution from hydrochloric acid without requiring shutdown for cleaning, as described in claim 6, is characterized in that: One side of the valve (8) is connected to an acid replenishment port (9).

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