Device for dissolving potassium hydroxide caustic soda flakes into water

Abstract

The utility model discloses a potassium hydroxide flake caustic soda dissolving and water dissolving device which comprises a tank body, a feeding port is arranged at the top of the tank body, a grate is arranged in the feeding port, a waste gas short section is arranged at the top of the tank body and connected with a waste gas valve, a liquid level meter is arranged on the side wall of the tank body, and a liquid outlet pipe is arranged at the bottom of the tank body. A liquid outlet valve is installed on the liquid outlet pipe, an intercepting partition plate is arranged at the bottom of the inner side of the tank body, a water distributor is arranged on one side of the intercepting partition plate and connected with a process water short section through a pipeline, and the process water short section is connected with a process water valve. Compared with the prior art, the device is reasonable in design and can ensure the safety of operators. And generated alkaline steam is absorbed by the waste gas absorption system, so that pollution to the environment is avoided. And alkali liquor with required concentration can be prepared through the liquid level meter. And after the recovered alkali solution dissolved water is prepared, steam blowing is performed on the tank body and the liquid outlet pipe, so that the equipment and the pipeline are ensured to be in an available state when being used next time.

Description

Technical Field

[0001] The utility model relates to the technical field of potassium hydroxide flake caustic soda production, in particular to a potassium hydroxide flake caustic soda dissolving and water-making device. Background Art

[0002] The current market for potassium hydroxide products mainly includes two types of products: 48% liquid caustic soda and 90% flake caustic soda. The advantage of 90% flake caustic soda is its high concentration and low transportation cost, so 90% flake caustic soda is suitable for customers who transport over long distances, especially for foreign trade exports. Due to its convenient storage and other characteristics, flake caustic soda products have their own unique advantages over liquid caustic soda products in the sales of potassium hydroxide products. The safe and stable operation of flake caustic soda production is of vital importance. However, in the process of flake caustic soda production, there will inevitably be some emergencies due to various reasons, which will lead to the emergency shutdown of flake caustic soda production, and the subsequent production packaging, palletizing, storage, and loading of the flake caustic soda flake machine may also cause production anomalies such as damaged packaging bags and spilled materials.

[0003] The waste alkali generated during the emergency shutdown of the above-mentioned caustic soda flake production, production packaging and loading, etc. needs to be recycled in time. The unqualified waste alkali generated during the shutdown process and the waste alkali on the ground generated in other production links will be recycled. The current method is basically to pour it directly into the waste alkali recovery pool, and then add water directly to the pool to dissolve it. The dissolution process will release a large amount of dissolution heat and the dissolution reaction will be very intense. There are great safety risks in the operation process. The dissolved waste alkali liquid may be mixed with some impurities and foreign matter brought in when the caustic soda flakes are recovered. The overall utilization value is low. Generally, it is used as a brine refining agent. If these waste alkalis are collected and dissolved in a specially designed dissolution tank to make an alkali solution of a specified concentration, it can not only ensure the safety of the dissolution process but also improve the utilization value of the alkali solution after dissolution. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a potassium hydroxide flake caustic soda dissolving and water device, which can dissolve the recovered unqualified flake caustic soda, and the dissolving and water process is simple to operate. The operator adds materials through the feeding port, and the grate installed at the feeding port can intercept foreign matter that may be contained in the recovered flake caustic soda. After the feeding is completed, the operator opens the water adding valve remotely, and the amount of water added can be adjusted by adjusting the opening of the water adding valve to achieve a stable and controllable flake caustic soda dissolving process. At the same time, the high-temperature steam generated during the dissolving process is promptly pumped to the exhaust gas absorption system by the fan. The reasonable design of the device can effectively protect the safety of the operator, and at the same time can ensure the quality of the dissolved alkali solution, thereby improving the utilization value of the dissolved and recovered alkali solution.

[0005] To achieve this technical purpose, the utility model adopts the following scheme:

[0006] A potassium hydroxide flake caustic soda dissolving and water-making device comprises a tank body, a feeding port is arranged on the top of the tank body, a grate is arranged in the feeding port, an exhaust gas nipple is installed on the top of the tank body, the exhaust gas nipple is connected with an exhaust gas valve, a liquid level meter is installed on the side wall of the tank body, a liquid outlet pipe is arranged at the bottom of the tank body, the liquid outlet pipe is installed with a liquid outlet valve, an interception baffle is arranged at the bottom of the inner side of the tank body, a water distributor is arranged on one side of the interception baffle, the water distributor is connected with a process water nipple through a pipeline, and the process water nipple is connected with a process water valve.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] The utility model is reasonably designed and can guarantee the personal safety of operators when operating the flake alkali water treatment plant to the greatest extent. A large amount of alkaline steam generated during the exothermic process of flake alkali dissolution is absorbed by the exhaust gas absorption system to avoid pollution to the environment. The device is designed with a liquid level meter. By measuring the recovered alkali added to the tank body and controlling the liquid level in the tank body, the alkali solution of the required concentration can be accurately prepared. In order to prevent the alkali solution from crystallizing in the tank body and the liquid outlet pipe, a steam purge pipe is provided on the tank body and the liquid outlet pipe. Whenever the recovered alkali dissolution water is configured, the tank body and the liquid outlet pipe need to be steam purged to ensure that the equipment and pipelines are in a usable state when used next time.

[0009] Furthermore, a steam nipple is provided on the side wall of the tank body, the steam nipple is connected to a first steam valve, the liquid outlet pipe is connected to a steam pipe, a second steam valve is installed on the steam pipe, and when the dissolution is completed, the tank body and the liquid outlet pipe are purged with steam.

[0010] The water distributor and the liquid outlet pipe are respectively arranged on both sides of the intercepting partition.

[0011] A drain hole is provided at the bottom of the intercepting baffle, and its function is to ensure that the alkali liquid can be completely discharged during drainage.

[0012] The liquid level meter is interlocked with the process water valve. When the liquid level meter display value rises to the set height, the process water valve is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a potassium hydroxide flake caustic soda dissolving water device according to an embodiment of the utility model;

[0014] Figure 2 This is a bottom plan view of a potassium hydroxide flake caustic soda dissolving and water-making device according to an embodiment of the utility model;

[0015] Figure 3 This is a top view of a potassium hydroxide flake caustic soda dissolving and water-making device according to an embodiment of the utility model;

[0016] The markings in the figure are: 1. tank body; 2. feeding port; 3. grate; 4. steam short section; 5. first steam valve; 6. liquid level gauge; 7. water distributor; 8. process water short section; 9. process water valve; 10. exhaust gas short section; 11. exhaust gas valve; 12. liquid outlet pipe; 13. liquid outlet valve; 14. intercepting baffle; 15. steam pipe; 16. second steam valve. DETAILED DESCRIPTION

[0017] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0018] See also Figures 1 to 3 The utility model provides a technical solution: a potassium hydroxide flake caustic soda water dissolving device, comprising a tank body 1, a feeding port 2 is arranged on the top of the tank body 1, a grate 3 is arranged in the feeding port 2, which is used to intercept foreign matter that may be contained in the recovered flake caustic soda when feeding, an exhaust gas short section 10 is installed on the top of the tank body 1, and the exhaust gas short section 10 is connected to the exhaust gas valve 11, and a liquid level meter 6 is installed on the side wall of the tank body 1, and the concentration of the liquid caustic soda after dissolving water is controlled by adjusting the height value of the liquid level. A liquid outlet pipe 12 is arranged at the bottom of the tank body 1, and a liquid outlet valve 13 is installed on the liquid outlet pipe 12. An intercepting baffle 14 is arranged at the bottom of the inner side of the tank body 1, and a drain hole is arranged at the bottom of the intercepting baffle 14 to ensure that the alkali liquid can be completely discharged during drainage. A water distributor 7 is arranged on one side of the intercepting baffle 14, and the water distributor 7 and the liquid outlet pipe 12 are arranged on both sides of the intercepting baffle 14 respectively. The water distributor 7 is connected to the process water nipple 8 through a pipeline, and the process water nipple 8 is connected to a process water valve 9. The process water valve 9 is interlocked with the liquid level meter 6. When the display value of the liquid level meter 6 rises to a set height, the process water valve 9 is closed.

[0019] A steam nipple 4 is provided on the side wall of the tank body 1, the steam nipple 4 is connected to a first steam valve 5, the liquid outlet pipe 12 is connected to a steam pipe 15, and a second steam valve 16 is installed on the steam pipe 15. When the dissolution is completed, the tank body 1 and the liquid outlet pipe 12 are purged with steam.

[0020] The working process of the utility model is as follows:

[0021] First, the operator confirms that the first steam valve 5, process water valve 9, exhaust valve 11, liquid outlet valve 13 and second steam valve 16 are in the closed state. Then the measured recovered caustic soda flakes are added into the tank body 1 through the feeding port 2, and the foreign matter contained in the recovered caustic soda flakes is trapped on the grate 3. After the feeding is completed, the exhaust valve 11 is opened.

[0022] Slowly open the process water valve 9 to an appropriate opening, and the process water enters the bottom of the tank 1 through the water distributor 7. The previously added recycled caustic soda flakes begin to dissolve in water. Since the dissolution process is an exothermic reaction, there will be local boiling during the dissolution, which will produce a large amount of alkaline steam, which is pumped away by the exhaust gas absorption system through the exhaust gas short section 10.

[0023] When the liquid level meter 6 shows that the liquid level has risen to the set height, the process water valve 9 is closed. After standing for a certain period of time to confirm that all the steam in the tank 1 has been released, the liquid outlet valve 13 is opened to send the prepared recovery alkali solution of a certain concentration into the downstream dilute alkali circulation system for recycling. If multiple dissolution water operations are required, just repeat the above steps.

[0024] After the water dissolving operation is completed, the first steam valve 5 and the second steam valve 16 are opened to steam purge the tank 1 and the liquid outlet pipe 12. After the purge is qualified, the first steam valve 5 and the second steam valve 16 are closed, and then the exhaust valve 11 is closed. The device is restored to the standby state for operation again.

[0025] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A potassium hydroxide flake caustic soda dissolving water device, comprising a tank body (1), a feeding port (2) being arranged on the top of the tank body (1), characterized in that: A grate (3) is provided in the feeding port (2); an exhaust gas short section (10) is installed on the top of the tank body (1); the exhaust gas short section (10) is connected to an exhaust gas valve (11); a liquid level gauge (6) is installed on the side wall of the tank body (1); a liquid outlet pipe (12) is provided at the bottom of the tank body (1); a liquid outlet valve (13) is installed on the liquid outlet pipe (12); an interception baffle (14) is provided at the bottom of the inner side of the tank body (1); a water distributor (7) is provided on one side of the interception baffle (14); the water distributor (7) is connected to a process water short section (8) through a pipeline; and the process water short section (8) is connected to a process water valve (9).

2. The potassium hydroxide flake caustic soda dissolving water device according to claim 1, characterized in that, A steam nipple (4) is provided on the side wall of the tank body (1), the steam nipple (4) is connected to a first steam valve (5), the liquid outlet pipe (12) is connected to a steam pipe (15), and a second steam valve (16) is installed on the steam pipe (15).

3. The potassium hydroxide flake caustic soda dissolving water device according to claim 1, characterized in that, The water distributor (7) and the liquid outlet pipe (12) are respectively arranged on both sides of the interception partition (14).

4. The potassium hydroxide flake caustic soda dissolving water device according to claim 1, characterized in that, A drain hole is provided at the bottom of the intercepting baffle (14).

5. The potassium hydroxide flake caustic soda dissolving water device according to claim 1, characterized in that, The liquid level meter (6) is interlocked with the process water valve (9).

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