Urea hydrolysis equipment
By introducing filter cartridge and conical scraper structures into the urea hydrolysis equipment, combined with the design of the cylinder and stirring leaves, the problems of low steam heat transfer efficiency and difficult equipment cleaning are solved, and the improvement of urea hydrolysis efficiency and convenient equipment maintenance are achieved. sex.
Patent Information
- Application Number
- CN202420616746.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-28
AI Technical Summary
During the long-term heating process of existing urea hydrolysis equipment, steam heat transfer efficiency is low, and it is difficult to perform internal cleaning and maintenance in the sealed state, resulting in low hydrolysis efficiency and equipment maintenance efficiency.
A urea hydrolysis equipment is designed, using a structure that combines the filter cartridge and a conical scraper. The stirring leaves are driven by the rotating rod driven by the cylinder and the motor to accelerate the hydrolysis reaction, and the cylinder is used to lift the filter cartridge to filter impurities and scrape them. The material is used to improve steam heat transfer efficiency and equipment cleaning convenience.
It improves the efficiency of urea hydrolysis and the convenience of cleaning equipment, ensures effective transfer of steam heat, shortens the hydrolysis time and simplifies the equipment maintenance process.
Smart Images
Figure CN222151951U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of urea processing, and in particular relates to urea hydrolysis equipment. Background Art
[0002] At present, ammonia is often produced by urea hydrolysis, and the urea ammonia production process includes urea hydrolysis and urea pyrolysis. Urea hydrolysis and urea pyrolysis processes have different chemical processes due to different temperature and pressure conditions. Factors affecting urea hydrolysis include temperature, initial concentration of water in the solution, urea content, ammonia and carbon dioxide content in the solution, and catalysts. At a higher reaction temperature, sufficient reaction time is guaranteed, and the ammonia and carbon dioxide generated by hydrolysis are removed in time, and the urea in the solution can be basically completely hydrolyzed. Hydrolysis technology has certain advantages over pyrolysis technology, especially in terms of energy consumption.
[0003] When urea is hydrolyzed, urea is usually mixed with water first to form a urea liquid and then heated at high temperature. The heating method of existing equipment mostly chooses to use steam to circulate in the pipe for heating. After long-term heating, impurities and scale in the water adhere to the surface of the pipe, resulting in the heat of the steam cannot be well transferred to the water source. In addition, since most of the equipment is in a sealed state, the staff cannot easily clean and maintain the inside of the equipment.
[0004] Therefore, in view of the deficiencies of the above-mentioned technologies, the present application proposes a urea hydrolysis device that can effectively solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of the utility model is to provide a urea hydrolysis device to solve some problems existing in the existing urea hydrolysis device in view of the deficiencies of the prior art.
[0006] To achieve the above purpose, the specific technical solution of the utility model is as follows:
[0007] A urea hydrolysis device comprises a support frame, a reaction tank is fixedly connected to the support frame, a filter cartridge is slidably connected to the inner wall of the reaction tank, a sealing cylinder cover is arranged above the reaction tank, symmetrically arranged cylinders are fixedly connected to both sides of the support frame, the cylinders are vertically arranged and the top ends are fixedly connected to the sealing cylinder covers through fixing blocks, a first air pipe arranged in a circumferential manner and vertically upward is arranged at the bottom of the reaction tank, a second air pipe corresponding to the first air pipe is fixedly connected to the sealing cylinder cover, the lower end of the second air pipe is slidably connected to the first air pipe, and a sealing cover is provided on the surface of the second air pipe.
[0008] As a further configuration of the above solution, the first air pipe is fixedly connected to the reaction tank, the first air pipe penetrates the filter cartridge upward and extends to the top of the filter cartridge and is slidably connected to the filter cartridge.
[0009] As a further configuration of the above solution, a conical scraper is fixedly connected to the bottom of the inner side of the filter cartridge, and the conical scraper is slidably connected to the first air pipe.
[0010] As a further configuration of the above solution, the ends of the first air pipe and the second air pipe that are away from each other are both fixedly connected to an air guide ring frame, and the air guide ring frame is fixedly connected to an air delivery pipe.
[0011] As a further arrangement of the above scheme, the inner side of the upper air guide ring frame is fixedly connected to a motor through a bracket, the motor is fixedly connected to a rotating rod, the rotating rod vertically penetrates the sealing cylinder cover downward and is rotatably connected to the filter cylinder, the filter cylinder is axially positioned on the rotating rod, and the surface of the rotating rod is fixedly connected to evenly distributed stirring blades.
[0012] As a further configuration of the above solution, a drain pipe is provided at the bottom of the reaction tank.
[0013] The working principle of the utility model is as follows: the cylinder is started to lift the sealing cylinder cover together with the rotating rod and the filter cylinder from the inside of the reaction tank upward, urea particles are placed in the filter cylinder, water and additives are injected into the reaction tank, and after the feeding is completed, the cylinder is started again to lower the sealing cylinder cover to connect and seal with the reaction tank, and at the same time, the second air pipe is inserted into the first air pipe and sealed through the sealing cover, the air supply pipe is connected to the steam source, the upper air supply pipe is used for steam injection, and the lower air supply pipe is exhausted, and the high-temperature steam enters the reaction tank through the second air pipe and the first air pipe to exchange heat with the water; the starting motor 11 uses the rotating rod to drive the stirring blade to rotate and stir the aqueous solution, thereby accelerating the hydrolysis speed, and after the hydrolysis is completed, the steam is turned off, and the cylinder is started again to lift the sealing cylinder cover and the filter cylinder. The filter cylinder will filter out the impurities therein during the rising process, and the conical scraper on the filter cylinder can scrape off the attachments on the surface of the first air pipe, which is convenient for subsequent cleaning work.
[0014] The utility model has the following beneficial effects:
[0015] By arranging a filter cartridge in the reaction tank, and arranging a conical scraper corresponding to the first air pipe on the filter cartridge, in conjunction with the second air pipe, the sealing cover and the cylinder, the filter cartridge can be lifted by the cylinder after the hydrolysis is completed to filter out impurities in the water, and the conical scraper can be used to scrape off the stains on the surface of the first air pipe, so as to clean up in a timely and fast manner and improve the heat transfer efficiency of the steam; in addition, the rotating rod drives the stirring blades to stir the aqueous solution, accelerates the dissolution rate of the urea particles, and effectively improves the hydrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model;
[0017] Figure 2It is a cross-sectional view of the reaction tank structure of the utility model;
[0018] Figure 3 It is a schematic diagram of the structure of the motor, rotating rod and stirring blade of the utility model;
[0019] Figure 4 It is a bottom view of the internal structure of the reaction tank of the utility model.
[0020] In the figure: 1. support frame; 2. reaction tank; 3. filter cartridge; 4. sealing cartridge cover; 5. first air pipe; 6. second air pipe; 7. sealing cover; 8. air guide ring frame; 9. air delivery pipe; 10. conical scraper; 11. motor; 12. rotating rod; 13. stirring blade; 14. cylinder; 15. drain pipe. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.
[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 4 , and describes the application in detail with reference to embodiments.
[0023] The present embodiment discloses a urea hydrolysis device, including a support frame 1, a reaction tank 2 is fixedly connected to the inner side of the support frame 1, a filter cartridge 3 is slidably connected to the bottom of the inner cavity of the reaction tank 2, a sealing cylinder cover 4 is arranged above the top of the reaction tank 2, a first air pipe 5 arranged in a circumferential manner and vertically upward is arranged at the bottom of the reaction tank 2, and a plurality of first air pipes 5 are arranged, the top of the first air pipe 5 passes through the filter cartridge 3 and extends to the upper part of the filter cartridge 3, the first air pipe 5 is slidably connected to the filter cartridge 3, a conical scraper 10 used in conjunction with the first air pipe 5 is fixedly connected to the bottom of the inner side of the filter cartridge 3, and the conical scraper 10 The top end is blade-shaped and fits with the surface of the first air pipe 5. The top of the sealing tube cover 4 is fixedly connected to the second air pipe 6 corresponding to the first air pipe 5. The bottom end of the second air pipe 6 extends to the inner side of the first air pipe 5. The lower end of the second air pipe 6 is slidably connected to the first air pipe 5. The second air pipe 6 is located on the surface inside the reaction tank 2 and is fixedly connected to a sealing cover 7 used in conjunction with the first air pipe 5. The inner side of the sealing cover 7 is provided with aerogel that can effectively seal and resist heat. The first air pipe 5 and the second air pipe 6 are fixedly connected at the opposite ends to each other with an air guide ring frame 8, and the surface of the air guide ring frame 8 is fixedly connected to an air supply pipe 9 through an opening. The two sides of the top of the support frame 1 are fixedly connected to the cylinder 14, and the top of the cylinder 14 is fixedly connected to the sealing tube cover 4 through a fixing block.
[0024] The inner side of the upper air guide ring frame 8 is fixedly connected with a motor 11 through a bracket. The motor 11 is a servo motor. The output shaft of the motor 11 is fixedly connected with a rotating rod 12 through a coupling. The bottom of the rotating rod 12 passes through the sealing cylinder cover 4 and is rotatably connected to the filter cartridge 3 through a bearing. The filter cartridge 3 is axially positioned on the rotating rod 12. The surface of the rotating rod 12 located inside the reaction tank 2 is fixedly connected with a stirring blade 13. The bottom of the reaction tank 2 is fixedly connected with a drain pipe 15 through an opening.
[0025] The working process of the utility model is as follows: when in use, the cylinder 14 is first started to lift the sealing cylinder cover 4 together with the rotating rod 12 and the filter cartridge 3 from the inner side of the reaction tank 2, and then the urea granules are placed on the inner side of the filter cartridge 3, and water and additives are injected into the interior of the reaction tank 2 at the same time. After the feeding is completed, the cylinder 14 is started again to lower the sealing cylinder cover 4 to dock and seal with the reaction tank 2, and at the same time, the second air pipe 6 is inserted into the inner side of the first air pipe 5 and the connection is sealed by the sealing cover 7, the air supply pipe 9 is connected to the steam source, the upper air supply pipe 9 is steam injected, and the lower air supply pipe 9 is exhausted, and the high-temperature steam enters the interior of the reaction tank 2 through the second air pipe 6 and the first air pipe 5 to heat the water source.
[0026] The starting motor 11 uses the rotating rod 12 to drive the stirring blade 13 to rotate and stir the water source to speed up the hydrolysis. After the hydrolysis is completed, the steam is turned off, and the cylinder 14 is started again to lift the sealing cylinder cover 4 and the filter cylinder 3. The filter cylinder 3 will bring out the impurities in the process of rising, and the conical scraper 10 can scrape off the attachments on the surface of the first air pipe 5.
[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A urea hydrolysis device, comprising a support frame, to which a reaction tank is fixedly connected, characterized in that: A filter cartridge is slidably connected to the inner wall of the reaction tank, a sealing cylinder cover is arranged above the reaction tank, symmetrically arranged cylinders are fixedly connected on both sides of the support frame, the cylinders are vertically arranged and the top ends are fixedly connected to the sealing cylinder cover through fixed blocks, a first air pipe arranged in a circular shape and vertically upward is provided at the bottom of the reaction tank, a second air pipe corresponding to the first air pipe is fixedly connected to the sealing cylinder cover, the lower end of the second air pipe is slidably connected to the first air pipe, and a sealing cover is provided on the surface of the second air pipe.
2. The urea hydrolysis equipment according to claim 1, characterized in that: The first air pipe is fixedly connected to the reaction tank, and the first air pipe penetrates the filter cartridge upwards and extends to the top of the filter cartridge and is slidably connected to the filter cartridge.
3. The urea hydrolysis equipment according to claim 2, characterized in that: A conical scraper is fixedly connected to the bottom of the inner side of the filter cartridge, and the conical scraper is slidably connected to the first air pipe.
4. The urea hydrolysis equipment according to claim 1, characterized in that: The ends of the first air pipe and the second air pipe that are away from each other are both fixedly connected to an air guide ring frame, and the air guide ring frame is fixedly connected to an air delivery pipe.
5. The urea hydrolysis equipment according to claim 1, characterized in that: The inner side of the upper air guide ring frame is fixedly connected to a motor through a bracket, and the motor is fixedly connected to a rotating rod. The rotating rod vertically penetrates the sealing cylinder cover downward and is rotatably connected to the filter cylinder. The filter cylinder is axially positioned on the rotating rod, and the surface of the rotating rod is fixedly connected to evenly distributed stirring blades.
6. The urea hydrolysis equipment according to claim 1, characterized in that: A drain pipe is arranged at the bottom of the reaction tank.