Continuous automatic treatment system for converting ammonium salt into sodium salt
By designing a continuous automatic treatment system for ammonium salt to sodium salt, the problems of low automation and poor production efficiency in the existing technology are solved, and efficient and automated ammonium to sodium treatment are achieved, reducing ammonium root residues and impurities in sodium liquid, and improving product quality.
Patent Information
- Application Number
- CN202422130061.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-31
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-31
AI Technical Summary
现有焦化脱硫脱氰废液处理中,铵转钠技术设备多为间歇式生产,自动化程度低,生产效率差,钠液中铵根残留高且杂质多,合格产品获得率低。
A continuous automatic treatment system for ammonium salt to sodium salt is designed, including liquid alkali storage tanks, ammonium liquid storage tanks, material and liquid mixers, sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-sodium-to-
It improves automation efficiency, reduces the residual ammonium roots and impurities in sodium liquid, improves production efficiency and product quality, and achieves energy-saving and efficient treatment effects.
Smart Images
Figure CN223087606U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical treatment, and more particularly to a continuous automatic treatment system for converting ammonium salts into sodium salts. Background Art
[0002] In the field of treating coking desulfurization and de-cyanation waste liquid, a large amount of ammonium thiocyanate products are extracted by a salt extraction device. Some of the ammonium thiocyanate can be further processed and converted into sodium thiocyanate. In the existing ammonium-to-sodium conversion technology, the residual ammonium in the sodium liquid after equipment treatment is relatively high, mostly intermittent production, with low automation and poor production efficiency. Moreover, the obtained sodium liquid has more impurities and a low qualified product yield.
[0003] Therefore, it is necessary to provide a continuous automatic treatment system for converting ammonium salts into sodium salts. Summary of the Utility Model
[0004] The utility model provides a continuous automatic treatment system for converting ammonium salts into sodium salts to solve the above technical problems.
[0005] To achieve the above object, an embodiment of the utility model provides a continuous automatic treatment system for converting ammonium salts into sodium salts, comprising: a liquid caustic soda storage tank, an ammonium liquid storage tank, a liquid material mixer, a sodium conversion rising film evaporation ammonia stripper, a gas-liquid separator, a condensation heat exchanger, an ammonia stripping tower device, an ammonia absorption tower device, and a sodium liquid storage tank. The liquid caustic soda storage tank is communicated with the liquid material mixer through a liquid caustic soda conveying pipe, the ammonium liquid storage tank is communicated with the liquid material mixer through a liquid ammonium salt conveying pipe, the liquid material mixer is communicated with the condensation heat exchanger through an alkali-ammonium mixed liquid conveying pipe, the sodium conversion rising film evaporation ammonia stripper is communicated with the gas-liquid separator through a separation pipe, the condensation heat exchanger comprises a tube side and a shell side, the shell side is communicated with the gas-liquid separator, and the tube side is communicated with the liquid outlet of the liquid material mixer; the ammonia stripping tower device is communicated with the gas-liquid separator through a second sodium liquid conveying pipe; the ammonia absorption tower device is communicated with the condensation heat exchanger and the ammonia stripping tower through an ammonia gas collecting pipe; the sodium liquid storage tank is communicated with the ammonia stripping tower device through a first sodium liquid conveying pipe.
[0006] Further, an alkali liquid distributor, a flow disturbing plate and a flow disturbing device are arranged inside the liquid material mixer.
[0007] Further, metering pumps are arranged on the liquid caustic soda conveying pipe and the liquid ammonium salt conveying pipe.
[0008] Further, valves are arranged on the liquid caustic soda conveying pipe, the liquid ammonium salt conveying pipe, the alkali-ammonium mixed liquid conveying pipe, the separation pipe, the collecting pipe, the first sodium liquid conveying pipe and the second sodium liquid conveying pipe.
[0009] Furthermore, instrument structures are provided on the liquid caustic soda transfer pipe, the liquid ammonium salt transfer pipe, the alkali-ammonium mixed liquid transfer pipe, the separation pipe, the collection pipe, the first sodium liquid transfer pipe, and the second sodium liquid transfer pipe.
[0010] Furthermore, the gas-liquid separator is provided with a feed inlet, and the feed inlet is tangent to the material inlet direction.
[0011] Furthermore, a baffle is provided on the feed inlet, and through micropores are provided on the baffle.
[0012] Furthermore, the ammonia absorption tower device includes an absorption tower body, and the number of the absorption tower bodies ≥ 1.
[0013] Furthermore, a spray circulation pump is provided on one side of each absorption tower body, and the outlet of the spray circulation pump is communicated with the condensation heat exchanger.
[0014] Furthermore, a mixed liquid outlet is provided on the upper side of the liquid material mixer, and the mixed liquid outlet is communicated with the condensation heat exchanger.
[0015] Compared with the prior art, the present utility model has good ammonium-to-sodium treatment effect, high automation efficiency, less impurities in the obtained ammonia water, less residual ammonium in the sodium liquid, and is beneficial to energy-saving and high-efficiency technical effects. It solves the problems in the existing ammonium-to-sodium technology that the residual ammonium in the sodium liquid after equipment treatment is relatively high, mostly intermittent production, low automation degree, poor production efficiency, and the obtained sodium liquid has more impurities and low qualified product yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present utility model will be further described below with reference to the drawings and embodiments.
[0017] Figure 1 It is a schematic structural diagram of the optimal embodiment of a continuous automatic ammonium salt to sodium salt treatment system of the present utility model.
[0018] Among them, 1. Liquid caustic soda storage tank; 2. Ammonium liquid storage tank; 3. Sodium liquid storage tank; 4. Liquid material mixer; 5. Sodium conversion rising film evaporation ammonia discharger; 6. Gas-liquid separator; 7. Condensation heat exchanger; 8. Ammonia distillation tower device; 9. Ammonia absorption tower device. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Now, the present utility model will be further described in detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.
[0020] Please refer to Figure 1 , Figure 1 It is a schematic structural diagram of the optimal embodiment of a continuous automatic ammonium salt to sodium salt treatment system of the present utility model. AsFigure 1 As shown, at least one embodiment provides an ammonium salt to sodium salt continuous automatic processing system, including a liquid caustic soda storage tank 1, an ammonium liquid storage tank 2, a feed liquid mixer 4, a sodium conversion rising film evaporation ammonia stripper 5, a gas-liquid separator 6, a condensation heat exchanger 7, an ammonia distillation tower device 8, an ammonia absorption tower device 9 and a sodium liquid storage tank 3. The liquid caustic soda storage tank 2 contains liquid sodium hydroxide inside, is connected to the feed liquid mixer 4 and can convey liquid sodium hydroxide into the feed liquid mixer 4; the liquid caustic soda storage tank 1 is connected to the feed liquid mixer 4 through a liquid caustic soda delivery pipe. The ammonium liquid storage tank 2 contains ammonium thiocyanate solution extracted from coking desulfurization waste liquid inside, is connected to the feed liquid mixer 4 and can convey ammonium thiocyanate solution into the feed liquid mixer 4; the ammonium liquid storage tank 2 is connected to the feed liquid mixer 4 through a liquid ammonium salt delivery pipe. The feed liquid mixer 4 is used to fully mix the liquid caustic soda and the ammonium liquid. The feed liquid mixer 4 is connected to the condensation heat exchanger 7 through an alkali-ammonium mixed liquid delivery pipe. The sodium conversion rising film evaporation ammonia stripper is connected to the feed liquid mixer 4. The sodium conversion rising film evaporation ammonia stripper 5 is used to heat and react the mixed liquid caustic soda and ammonium liquid, evaporate ammonia gas and part of the water vapor, and obtain a sodium liquid containing a small amount of ammonium ions; the gas-liquid separator 6 is connected to the sodium conversion rising film evaporation ammonia stripper 5. The gas-liquid separator 6 is used to separate the ammonia gas, water vapor and liquid sodium discharged from the sodium conversion rising film evaporation ammonia stripper 5; the sodium conversion rising film evaporation ammonia stripper 5 is connected to the gas-liquid separator 6 through a separation pipe. The condensation heat exchanger 7 includes a tube side and a shell side. The shell side is connected to the gas-liquid separator 6, and the tube side is connected to the liquid outlet of the feed liquid mixer 4; the shell side is connected to the gas-liquid separator 6 in gas connection, and the tube side is connected to the liquid outlet of the feed liquid mixer 4. The condensation heat exchanger 7 is used to condense and recover ammonia water from the reacted gas phase through the condensation heat exchanger 7, and at the same time heat the feed liquid discharged from the feed liquid mixer 4. The ammonia distillation tower device 8 is connected to the gas-liquid separator 6 through a second sodium liquid delivery pipe; the ammonia distillation tower device 8 is connected to the gas-liquid separator 6 in liquid connection. The ammonia distillation tower device 8 is used to further remove the small amount of ammonia remaining in the sodium liquid discharged from the gas-liquid separator 6. The ammonia absorption tower device 9 is connected to the condensation heat exchanger 7 and the ammonia distillation tower device 8 through an ammonia gas collection pipe; the ammonia absorption tower device 9 is connected to the condensation heat exchanger 7 and the ammonia distillation tower device 8 in gas connection. The ammonia absorption tower device 8 is used to completely absorb ammonia gas to obtain a high-content ammonia water by-product; the sodium liquid storage tank 3 is connected to the ammonia distillation tower device 8 through a first sodium liquid delivery pipe. The ammonia distillation tower device 8 is used to accommodate the sodium liquid product obtained by the ammonia distillation tower.
[0021] An alkali liquid distributor, a turbulator and a flow spoiler are provided inside the feed liquid mixer 4. A mixed liquid outlet is provided on the upper side of the feed liquid mixer 4, and the mixed liquid outlet is connected to the condensation heat exchanger 7.
[0022] An ammonium salt to sodium salt continuous automatic processing system further includes an ammonium metering pump between the ammonium liquid storage tank 2 and the feed liquid mixer 4, and an alkali metering pump between the liquid caustic soda storage tank 1 and the feed liquid mixer 4. The ammonium metering pump is used to measure the input amount of ammonium liquid into the feed liquid mixer, and the alkali metering pump is used to measure the input amount of alkali liquid into the feed liquid mixer 4. Specifically, metering pumps are provided on the liquid caustic soda delivery pipe and the liquid ammonium salt delivery pipe. Valves are provided on the liquid caustic soda delivery pipe, the liquid ammonium salt delivery pipe, the alkali-ammonium mixed liquid delivery pipe, the separation pipe, the collection pipe, the first sodium liquid delivery pipe and the second sodium liquid delivery pipe. Instrument structures are provided on the liquid caustic soda delivery pipe, the liquid ammonium salt delivery pipe, the alkali-ammonium mixed liquid delivery pipe, the separation pipe, the collection pipe, the first sodium liquid delivery pipe and the second sodium liquid delivery pipe. A controller is used to link and control the mixing ratio of the two materials according to the PH after the materials are mixed. In the example, this matching ratio relationship has been set before the operation of the system. Only need to add the ammonium thiocyanate metering pump and sodium hydroxide metering pump with set flow rates to the mixing acid ratio device, and then carry out sodium conversion and ammonia discharge through the sodium conversion rising film evaporation ammonia discharger 7 and the ammonia distillation tower device 8, and the expected technical effect can be obtained. In addition, the valves on the pipes can be selected according to the actual situation. Specific valves can be check valves, non-return valves, solenoid valves, flow valves or pressure valves, etc. After selection, they are installed on the pipes in appropriate positions. The instrument structure includes one or more instruments such as a pressure gauge, a thermometer, a flow meter or a flow velocity meter. By installing instruments on the pipes, the styles or functions of the instruments can be selected according to actual needs. By selecting appropriate instruments and installing them on the pipes in appropriate positions, the operating states of the sodium conversion rising film evaporator 7, the ammonia distillation tower device 8, and the ammonia absorption tower 9 can be monitored in real time, so that the later staff can make reasonable adjustments to the present invention.
[0023] The feed inlet of the gas-liquid separator 6 enters tangentially. Due to the action of gravity, the liquid phase is discharged from the lower liquid outlet, and the gas inlet is above the separator, maintaining a height difference from the feed inlet. There is a baffle between the feed inlet and the gas inlet, and through holes are provided on the baffle to prevent liquid from being carried out from the gas outlet. Specifically, a feed inlet is provided on the gas-liquid separator 6, and the feed inlet is tangent to the direction of material entry. A baffle is provided on the feed inlet, and through micropores are provided on the baffle.
[0024] The ammonia absorption tower device 9 includes an absorption tower body, and the number of absorption tower bodies ≥ 1. A spray circulation pump is provided on one side of each absorption tower body, and the outlet of the spray circulation pump is connected to the condensation heat exchanger 7. A cooling heat exchanger is provided at the outlet of the spray circulation pump. The spray liquid is cooled and then enters the ammonia absorption tower to absorb the ammonia gas and part of the water vapor discharged from the gas-liquid separator 6 to obtain the by-product ammonia water.
[0025] The liquid discharged from the lower liquid outlet of the gas-liquid separator 6 enters the ammonia distillation tower. The ammonia distillation tower evaporates the remaining ammonia and discharges the sodium liquid of the product after sodium conversion from the bottom of the ammonia distillation tower. A small amount of ammonia gas evaporated enters the ammonia absorption tower for absorption.
[0026] Ammonium thiocyanate and sodium hydroxide liquids are fully mixed under turbulent flow through the sufficient turbulence effect in the feed liquid mixer 4; after the mixed feed liquid is transported through the pipeline to the condensation heat exchanger 7, it enters the preheated sodium conversion rising film evaporation ammonia stripper. After the feed liquid enters the bottom of the heating chamber of the sodium conversion rising film evaporation ammonia stripper 5, it is driven by the high-speed rising secondary steam and flows in a film-like manner along the wall surface while evaporating and stripping ammonia. The required preliminary ammonia stripping effect can be achieved at the top of the heating chamber, and a sodium liquid containing a small amount of ammonium ions is obtained.
[0027] The feed liquid discharged from the top of the sodium conversion rising film evaporation ammonia stripper 5 enters the gas-liquid separator 6. The gas-liquid separator 6 separates the ammonia gas, water vapor and liquid sodium discharged from the sodium conversion rising film evaporation ammonia stripper 5. The sodium liquid is discharged from the lower part of the gas-liquid separator 6 and enters the ammonia distillation tower device 8. The ammonia gas and part of the water vapor are discharged from the top of the gas-liquid separator and enter the condensation heat exchanger 7.
[0028] Since the shell side of the condensation heat exchanger 7 is connected to the gas phase of the gas-liquid separator 6, and the tube side is connected to the liquid outlet of the feed liquid mixer 4, the condensation heat exchanger 7 condenses and recovers ammonia water from the reacted gas phase through the condensation heat exchanger 7, and at the same time heats the feed liquid discharged from the feed liquid mixer 4;
[0029] After the feed liquid discharged from the lower part of the gas-liquid separator 6 enters the ammonia distillation tower device 8, the heating steam of the ammonia distillation tower is turned on, and the bottom temperature, bottom liquid level and top temperature of the tower are controlled to further remove the small amount of ammonia remaining in the sodium liquid; the feed liquid after removing the remaining small amount of ammonia enters the sodium liquid storage tank 3.
[0030] The ammonia gas and part of the water vapor generated by the condensation heat exchanger 7 and the ammonia distillation tower device 8 enter the ammonia absorption tower device 9 and are absorbed by the cooled spray absorption liquid. The ammonia gas is absorbed into the spray liquid. The spray liquid is water. When the ammonia water ratio in the first-stage absorption tower is lower than 0.920, it indicates that the ammonia water concentration in the first-stage absorption liquid has reached 20%, then the ammonia water is discharged to the ammonia water tank, and fresh water or the absorption liquid in the second tower is replenished to the first-stage absorption tower. The second and third towers of ammonia water absorption are mainly used to absorb the small amount of ammonia gas that was not completely absorbed in the previous absorption tower to ensure complete ammonia gas absorption and avoid ammonia gas leakage.
[0031] In summary, the present utility model has good ammonium-to-sodium treatment effect, high automation efficiency, less impurities in the obtained ammonia water, less residual ammonium ions in the sodium liquid, and is beneficial to energy-saving and high-efficiency technical effects.
[0032] Based on the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A continuous automatic processing system for converting ammonium salts to sodium salts, characterized in that, Including: Caustic soda storage tank (1), ammonium liquid storage tank (2), liquid material mixer (4), sodium conversion rising film evaporation ammonia stripper (5), gas-liquid separator (6), condensation heat exchanger (7), ammonia distillation tower device (8), ammonia absorption tower device (9) and sodium liquid storage tank (3). The caustic soda storage tank (1) is communicated with the liquid material mixer (4) through a caustic soda delivery pipe. The ammonium liquid storage tank (2) is communicated with the liquid material mixer (4) through a liquid ammonium salt delivery pipe. The liquid material mixer (4) is communicated with the condensation heat exchanger (7) through an alkali-ammonium mixed liquid delivery pipe. The sodium conversion rising film evaporation ammonia stripper (5) is communicated with the gas-liquid separator (6) through a separation pipe. The condensation heat exchanger (7) includes a tube side and a shell side. The shell side is communicated with the gas-liquid separator (6), and the tube side is communicated with the liquid outlet of the liquid material mixer (4). The ammonia distillation tower device (8) is communicated with the gas-liquid separator (6) through a second sodium liquid delivery pipe. The ammonia absorption tower device (9) is communicated with the condensation heat exchanger (7) and the ammonia distillation tower device (8) through an ammonia collection pipe. The sodium liquid storage tank (3) is communicated with the ammonia distillation tower device (8) through a first sodium liquid delivery pipe.
2. The continuous automatic processing system for converting ammonium salt to sodium salt according to claim 1, wherein: Inside the liquid material mixer (4), there are an alkali liquid distributor, a spoiler and a turbulator.
3. The continuous automatic ammonium salt to sodium salt processing system according to claim 2, characterized in that: Metering pumps are provided on the caustic soda delivery pipe and the liquid ammonium salt delivery pipe.
4. The continuous automatic processing system for converting ammonium salt to sodium salt according to claim 3, wherein: Valves are provided on the caustic soda delivery pipe, the liquid ammonium salt delivery pipe, the alkali-ammonium mixed liquid delivery pipe, the separation pipe, the collection pipe, the first sodium liquid delivery pipe and the second sodium liquid delivery pipe.
5. The continuous automatic processing system for converting ammonium salt to sodium salt according to claim 3, characterized in that: Instrument structures are provided on the caustic soda delivery pipe, the liquid ammonium salt delivery pipe, the alkali-ammonium mixed liquid delivery pipe, the separation pipe, the collection pipe, the first sodium liquid delivery pipe and the second sodium liquid delivery pipe.
6. The continuous automatic processing system for converting ammonium salt to sodium salt according to claim 1, wherein: The gas-liquid separator (6) is provided with a feed inlet, and the feed inlet is tangent to the material inlet direction.
7. The ammonium salt to sodium salt continuous automatic processing system according to claim 6, characterized in that: A baffle is provided on the feed inlet, and through micropores are provided on the baffle.
8. The continuous automatic ammonium salt to sodium salt treatment system according to claim 1, characterized in that: The ammonia absorption tower device (9) includes an absorption tower body, and the number of the absorption tower bodies is ≥1.
9. The ammonium salt to sodium salt continuous automatic treatment system according to claim 8, characterized in that: A spray circulation pump is provided on one side of each absorption tower body, and the outlet of the spray circulation pump is communicated with the condensation heat exchanger (7).
10. The continuous automatic ammonium salt to sodium salt processing system according to claim 1, characterized in that: A mixed liquid outlet is provided on the upper side of the liquid material mixer (4), and the mixed liquid outlet is communicated with the condensation heat exchanger (7).