Hot ammonia cleaning system for emptying barrel of ammonium chloride crystallizer
By designing the hot ammonia cleaning system of the ammonium chloride crystallizer ventilating barrel, the scaling in the empty barrel is circulated by the hot ammonia mother liquor, the problem of salt scar accumulation in the empty barrel is solved, and automatic cleaning is achieved, and production safety and output are improved.
Patent Information
- Application Number
- CN202420534798.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-19
AI Technical Summary
The existing ammonium chloride crystallizers and empty barrels are prone to accumulate ammonium chloride salt scars during use, resulting in scaling problems, affecting the effective use volume of the equipment and product quality. The existing technology lacks reasonable and safe disposal methods, which leads to cumbersome and time-consuming manual cleaning and poses production safety risks.
A hot ammonia cleaning system for venting barrels of ammonium chloride crystallizer was designed, and a circulation system was formed through the delivery pump, liquid inlet pipeline, liquid outlet pipeline and liquid discharge pump. The scale in the venting barrel was purified by using hot ammonia mother liquor, and after cleaning, it was reflowed into the crystallizer for continued use.
Automatic scaling in the empty bucket is realized, which reduces the demand for manual cleaning, improves the production safety and stability of the crystallizer, reduces production risks, saves resources, and improves ammonium chloride production.
Smart Images
Figure CN222659564U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crystallizer maintenance, in particular to a hot ammonia cleaning system for an emptying barrel of an ammonium chloride crystallizer. Background Art
[0002] In the production of combined alkali, the ammonium chloride crystallization process is an important link in the production process. Ammonium chloride solution is converted into ammonium chloride crystals by the operation of cooling the hot saturated solution. The crystallization process of ammonium chloride is divided into two steps of cold crystallization and salting-out crystallization, which are completed in the cold crystallizer and the salting-out crystallizer by the ammonia mother liquor I with the help of cooling and salting. The cold crystallization process of ammonium chloride is divided into external cooling crystallization process and vacuum crystallization process according to the refrigeration method, and most of the current domestic use is external cooling crystallization process. The existing cold crystallizer usually includes a tank body for holding hot saturated solution, and the hot saturated solution is crystallized by reducing the temperature of the tank body, but in the process, the crystals precipitated have a certain viscosity when containing water, so they will adhere to the inner wall of the tank body, and it is necessary to discharge and clean regularly, otherwise it will be difficult to remove the scale after a long time, which will have a greater impact on the next cold crystallization, not only affecting product quality, but also greatly reducing the effective volume used by the tank body.
[0003] When the crystallizer encounters the above problems during use, the solution usually adopted is to regularly drain and clean to prevent scaling. At the same time, a corresponding venting bucket is placed at the bottom of each crystallizer for use in draining the crystallizer. During the operation of the crystallizer, the ammonium chloride salt scar in the mother liquor will gradually accumulate as the mother liquor is recycled, and accumulate in large quantities at the bottom of the crystallizer. The workshop operator will discharge the salt scar at the bottom of the crystallizer into the venting bucket. Through regular cleaning and discharge, the problem of ammonium chloride salt scar accumulation at the bottom of the crystallizer will be solved. However, during the long-term use of the venting bucket, there is also the problem of continuous accumulation of ammonium chloride salt scar at the bottom. Long-term use will also produce scale that is difficult to remove, which not only affects the effective use volume of the venting bucket, but also makes the venting bucket unavailable when cleaning the venting bucket, which leads to the problem that the crystallizer cannot be cleaned and discharged at any time, and cannot play an emergency role, threatening the safe operation of the crystallizer and affecting product quality.
[0004] With regard to the scale accumulation and cleaning of fertilizers and salt scars in vent barrels, there is currently no reasonable and safe disposal method developed in China. They are all handled by manual shoveling and scrubbing, which is very cumbersome, time-consuming and labor-intensive. In addition, the vent barrels often need to be moved, so that they are not in their original positions and cannot be used in time. They cannot play their due use and emergency roles, which poses a production safety risk and affects product quality. Utility Model Content
[0005] In view of this, the utility model aims at the deficiencies of the prior art and provides a hot ammonia cleaning system for the vent barrel of an ammonium chloride crystallizer.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hot ammonia cleaning system for an ammonium chloride crystallizer venting barrel, comprising a venting barrel, a delivery pump, a liquid inlet pipe, a liquid outlet pipe and a drain pump, wherein the venting barrel is arranged at the lower part of the crystallizer, one side of the venting barrel is connected with the lower part of the crystallizer through the liquid inlet pipe, the delivery pump is arranged on the liquid inlet pipe, the other side of the venting barrel is connected with the upper part of the crystallizer through the liquid outlet pipe, and the drain pump is arranged on the liquid outlet pipe.
[0007] Furthermore, the delivery pump and the liquid discharge pump are both centrifugal pumps.
[0008] Furthermore, the delivery pump delivers the hot ammonia mother liquor in the crystallizer into the drain barrel, and after cleaning, it enters the crystallizer through the drain pump.
[0009] Furthermore, the bottom of the crystallizer is connected to the vent barrel through a vent pipe, and a vent valve is provided on the vent pipe.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] The utility model discloses a hot ammonia cleaning system for the vent barrel of an ammonium chloride crystallizer. The crystallizer and the vent barrel form a circulation system by using a delivery pump, a liquid inlet pipe, a liquid outlet pipe and a liquid discharge pump. The delivery pump continuously delivers the hot ammonia mother liquor in the crystallizer into the vent barrel to be cleaned, and the dissolution of ammonium chloride in the hot ammonia mother liquor is utilized to achieve cleaning. After cleaning, the vent barrel liquid discharge pump delivers the liquid into the crystallizer for use in the production of ammonium chloride products. The utility model solves the problem of ammonium chloride salt scar accumulation and scaling in the vent barrel by dissolving, cleaning and reflux, which can greatly improve the production safety and stability of the crystallizer, change the manual cleaning operation to the equipment automation operation, further improve the production automation level of the workshop, reduce risk factors, and in addition, can also utilize the effective components in the discharged mother liquor, reduce resource waste, and increase the ammonium chloride output. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0013] Figure 2 It is a structural schematic diagram of Embodiment 2 of the present utility model;
[0014] In the figure, 1-vent barrel, 2-transfer pump, 3-liquid inlet pipe, 4-liquid outlet pipe, 5-liquid discharge pump, 6-crystallizer, 7-valve, 8-vent pipe, 9-vent valve, 10-flow meter, 11-thermometer. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0016] Example 1
[0017] Reference Figure 1 A hot ammonia cleaning system for an ammonium chloride crystallizer venting barrel comprises a venting barrel 1, a delivery pump 2, a liquid inlet pipe 3, a liquid outlet pipe 4 and a liquid discharge pump 5. The venting barrel 1 is arranged at the lower part of a crystallizer 6, one side of the venting barrel 1 is connected with the lower part of the crystallizer 6 through the liquid inlet pipe 3, the delivery pump 2 is arranged on the liquid inlet pipe 3, the other side of the venting barrel 1 is connected with the upper part of the crystallizer 6 through the liquid outlet pipe 4, and the liquid discharge pump 5 is arranged on the liquid outlet pipe 4.
[0018] The delivery pump 2 and the liquid discharge pump 5 are both centrifugal pumps, and valves 7 are provided on the liquid inlet pipe 3 and the liquid outlet pipe 4.
[0019] The delivery pump 2 delivers the hot ammonia mother liquor in the crystallizer 6 into the drain barrel 1 , and after cleaning, it enters the crystallizer 6 through the drain pump 5 .
[0020] The hot ammonia cleaning system for the vent barrel of an ammonium chloride crystallizer of the utility model embodiment circulates hot ammonia mother liquor in the crystallizer and the vent barrel, so that the ammonium chloride scale on the inner wall of the vent barrel is dissolved in the hot ammonia mother liquor, thereby realizing automatic cleaning. Moreover, the mother liquor after cleaning is continuously returned to the crystallizer for use in the production of ammonium chloride, thereby saving costs and effectively controlling the balance of the mother liquor, increasing the ammonium chloride output and reducing salt consumption. Moreover, the entire process is clean and pollution-free, and no cleaning wastewater is generated, thereby greatly reducing environmental pressure.
[0021] Example 2
[0022] Reference Figure 2 The hot ammonia cleaning system for the emptying barrel of the ammonium chloride crystallizer of the utility model embodiment is different from that of embodiment 1 in that:
[0023] The bottom of the crystallizer 6 is connected to the vent barrel 1 through a vent pipe 8 , and a vent valve 9 is provided on the vent pipe 8 .
[0024] The liquid inlet pipeline 3 is provided with a flow meter 10 and a thermometer 11 for monitoring the flow rate and temperature of the hot ammonia mother liquor for cleaning.
[0025] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. Hot ammonia cleaning system for the vent barrel of ammonium chloride crystallizer, characterized by: It includes a venting barrel, a delivery pump, a liquid inlet pipe, a liquid outlet pipe and a liquid discharge pump. The venting barrel is arranged at the lower part of the crystallizer, one side of the venting barrel is connected with the lower part of the crystallizer through the liquid inlet pipe, the delivery pump is arranged on the liquid inlet pipe, the other side of the venting barrel is connected with the upper part of the crystallizer through the liquid outlet pipe, and the liquid discharge pump is arranged on the liquid outlet pipe.
2. The hot ammonia cleaning system for the venting barrel of an ammonium chloride crystallizer according to claim 1, characterized in that: The delivery pump and the liquid discharge pump are both centrifugal pumps.
3. The hot ammonia cleaning system for the venting barrel of an ammonium chloride crystallizer according to claim 1, characterized in that: The delivery pump delivers the hot ammonia mother liquor in the crystallizer into the drain barrel, and after cleaning, it enters the crystallizer through the drain pump.
4. The hot ammonia cleaning system for the venting barrel of an ammonium chloride crystallizer according to claim 1, characterized in that: The bottom of the crystallizer is connected to the vent barrel through a vent pipe, and a vent valve is arranged on the vent pipe.