Production equipment for refining brine by using alkaline residues
By designing a production equipment that uses alkali slag to make brine, the problem of alkali slag treatment is solved, and the resource utilization of alkali slag and the reduction of alkali slag emissions are achieved, which is of great economic and environmental significance.
Patent Information
- Application Number
- CN202421758962.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing technology is difficult to effectively utilize and treat alkaline slag, which has led to the problem of alkaline slag emissions that have not been ideally solved, affecting the survival and development of ammonia alkali enterprises.
A production equipment for brine using alkali slag was designed. Through thickeners, filter presses, caustic barrels, reaction tanks and other equipment, Ca(OH)2 and Mg(OH)2 in alkali slag were used to refine brine by refining it by refining it. The sodium chloride in the alkali slag was recovered during the refining process, achieving a 100% raw salt utilization rate.
The resource utilization of alkali slag has been achieved, the cost of brine refining and lime kiln production load has been reduced, and the emission of alkali slag has been reduced, which is of great significance to long-term development.
Smart Images
Figure CN223047266U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refining brine with alkali residue, and specifically relates to a production device for refining brine by using alkali residue. Background Art
[0002] At present, most of the waste liquid and waste residue discharged by ammonia-alkali enterprises in various countries in the world adopt the method of separately discharging liquid and solid residue, that is, the solid residue is dammed, reclaimed by filling the sea, built sedimentation tanks, etc., and then stored in a designated area. The waste liquid is clarified, separated, and then the temperature, pH value, and suspended solid content of the waste liquid are controlled within the range specified by environmental protection laws through measures such as carbonation, mixing with seawater, or neutralizing with acidic wastewater, and then it can be discharged into waters such as rivers, lakes, and seas to achieve harmless discharge. For example, the Barton's Alkali Factory in France, the Rossignol Alkali Factory in Italy, the Shoko Subsidiary Company in Japan, and the Tokuyama Alkali Factory all adopt the above treatment methods, and the treatment of waste residue still mainly focuses on reasonable discharge and storage.
[0003] Although major alkali factories and research institutions have carried out a large amount of research work on alkali residue, large-scale production and market promotion of alkali residue products have not been achieved, the market recognition of products is relatively low, and there is still no ideal solution to the problem of alkali residue discharge. With the increasing environmental protection pressure, the problem of alkali residue treatment directly affects the survival and development of ammonia-alkali enterprises. Therefore, it has become an urgent need to develop new technologies to realize the diversified utilization of alkali residue. Content of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a production device for refining brine by using alkali residue is proposed.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A production device for refining brine by using alkali residue, including a thickener, a filter press is arranged on the thickener, a waste clear liquid storage barrel is arranged on the thickener, the waste clear liquid storage barrel is arranged on one side of the filter press, a metering belt is arranged on one side of the filter press, a causticization barrel is arranged on one side of the metering belt, a soda ash liquid high-level tank is arranged on the causticization barrel, a reaction tank is arranged on the causticization barrel, a raw brine pump is arranged on one side of the reaction tank, and a raw brine barrel is arranged on one side of the raw brine pump.
[0006] As a further description of the above technical scheme:
[0007] A curved path tank is arranged on one side of the reaction tank, a clarification barrel is arranged on one side of the curved path tank, a salt mud tank is arranged on one side of the clarification barrel, a salt mud pump is arranged on one side of the salt mud tank, a refined brine storage barrel is arranged on one side of the clarification barrel, and a refined brine pump is arranged on one side of the refined brine storage barrel.
[0008] As a further description of the above technical scheme:
[0009] On one side of the salt sludge pump, there is a mud washing bucket. At the lower end of the mud washing bucket, there is a waste mud trough. On one side of the waste mud trough, there is a waste mud pump. On one side of the mud washing bucket, there is a miscellaneous water bucket. On one side of the miscellaneous water bucket, there is a miscellaneous water pump.
[0010] As a further description of the above technical solution:
[0011] The crude salt water pump is arranged on one side of the salt sludge tank.
[0012] As a further description of the above technical solution:
[0013] The waste mud pump is located on one side of the miscellaneous water pump.
[0014] As a further description of the above technical solution:
[0015] The causticizing bucket is arranged on one side of the salt sludge tank.
[0016] As a further description of the above technical solution:
[0017] The labyrinth groove is located on one side of the causticizing bucket.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, Ca(OH)2 and Mg(OH)2 in the alkali residue are used to replace the ash milk for brine refining, reducing the consumption of ash milk, and thus reducing the brine refining cost and the production load of the lime kiln.
[0020] 2. In the utility model, sodium chloride in the alkali residue can be recovered during the refining process, achieving a 100% utilization rate of raw salt, reducing the consumption of raw salt, and reducing the production cost of soda ash.
[0021] 3. In the utility model, using the alkali residue to refine brine not only realizes the resource utilization of the alkali residue, taking from soda ash and using for soda ash, but also can fundamentally reduce the discharge of alkali residue, which is of great significance for long-term development. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of a production device for refining brine using alkali residue proposed by the utility model.
[0023] Legend:
[0024] 1. Thickener; 2. Filter press; 3. Waste clear liquid storage bucket; 4. Metering belt; 5. Causticizing bucket; 6. Soda ash liquid high-level tank; 7. Reaction tank; 8. Crude salt water pump; 9. Crude salt water bucket; 10. Labyrinth groove; 11. Clarifying bucket; 12. Salt sludge tank; 13. Salt sludge pump; 14. Refined brine storage bucket; 15. Refined brine water pump; 16. Mud washing bucket; 17. Waste mud trough; 18. Waste mud pump; 19. Miscellaneous water bucket; 20. Miscellaneous water pump. Detailed implementation mode
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0026] Refer to Figure 1 , an embodiment provided by the present invention: a production device for refining brine using alkali residue, including a thickener 1, a filter press 2 is provided on the thickener 1, a waste clear liquid storage bucket 3 is provided on the thickener 1, the waste clear liquid storage bucket 3 is arranged on one side of the filter press 2, a metering belt 4 is arranged on one side of the filter press 2, a causticization bucket 5 is arranged on one side of the metering belt 4, a soda ash liquid high-level tank 6 is provided on the causticization bucket 5, a reaction tank 7 is provided on the causticization bucket 5, a crude salt water pump 8 is arranged on one side of the reaction tank 7, a crude brine bucket 9 is arranged on one side of the crude salt water pump 8. Using Ca(OH)2 and Mg(OH)2 in the alkali residue to replace the lime milk for brine refining reduces the amount of lime milk used, can reduce the brine refining cost and the production load of the lime kiln. During the refining process, sodium chloride in the alkali residue can be recovered, achieving a 100% utilization rate of raw salt, reducing the consumption of raw salt, and reducing the production cost of soda ash.
[0027] A curved path tank 10 is arranged on one side of the reaction tank 7, a clarification tank 11 is arranged on one side of the curved path tank 10, a salt mud tank 12 is arranged on one side of the clarification tank 11, a salt mud pump 13 is arranged on one side of the salt mud tank 12, a refined brine storage bucket 14 is arranged on one side of the clarification tank 11, a refined brine pump 15 is arranged on one side of the refined brine storage bucket 14, a mud washing bucket 16 is arranged on one side of the salt mud pump 13, a waste mud tank 17 is arranged at the lower end of the mud washing bucket 16, a waste mud pump 18 is arranged on one side of the waste mud tank 17, a miscellaneous water bucket 19 is arranged on one side of the mud washing bucket 16, a miscellaneous water pump 20 is arranged on one side of the miscellaneous water bucket 19. The crude salt water pump 8 is arranged on one side of the salt mud tank 12, the waste mud pump 18 is located on one side of the miscellaneous water pump 20, the causticization bucket 5 is arranged on one side of the salt mud tank 12, the curved path tank 10 is located on one side of the causticization bucket 5. Using alkali residue to refine brine not only realizes the resource utilization of alkali residue, achieving taking from soda ash and using for soda ash, but also can fundamentally reduce the discharge amount of alkali residue, which is of great significance for long-term development.
[0028] Working principle: The waste liquid generated at the bottom of the ammonia distillation tower in the evaporation and absorption section of the sodium bicarbonate workshop is sent into the thickener 1. The clear liquid overflows into the waste clear liquid storage barrel 3, and the alkali residue is discharged from the lower part of the thickener 1 and sent into the filter press 2. The dewatered alkali residue is weighed by the metering belt 4 and then sent into the causticizing barrel 5, where it undergoes a causticizing reaction with the soda solution from the soda solution elevated tank 6. After the reaction is completed, the causticized liquid overflows from the upper part of the barrel and enters the central barrel of the reaction barrel simultaneously with the crude brine from the crude brine barrel 9. The liquid undergoes a full reaction of calcium removal and magnesium removal from bottom to top in the reaction barrel. After staying in the reaction barrel for a period of time, the causticized brine overflowing from the upper part enters the meandering trough 10. After adding a certain amount of coagulant aid into the trough, it flows into the central barrel of the clarifying barrel 11, where clarification is carried out. The liquid overflowing from the upper part of the clarifying barrel 11 is the refined brine, which is sent into the refined brine storage barrel 14 for ammonia absorption. The sediment sludge at the bottom of the causticizing barrel 5, the reaction barrel, and the clarifying barrel 11 are all sent into the salt sludge trough 12, and then sent into the three-layer mud washing barrel 16 by the salt sludge pump 13. The sodium chloride in the salt sludge is washed and recovered by using the warm seawater sent from the evaporation and absorption section. The washing water enters the miscellaneous water barrel 19 for salt dissolution, and the washed waste mud enters the waste mud trough 17 and is sent into the thermal power desulfurization by the waste mud pump 18.
[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A production device for refining brine using alkali residue, comprising a thickener (1), characterized in that: The thickener (1) is provided with a filter press (2), the thickener (1) is provided with a waste clear liquid storage barrel (3), the waste clear liquid storage barrel (3) is arranged on one side of the filter press (2), a metering belt (4) is arranged on one side of the filter press (2), a causticizing barrel (5) is arranged on one side of the metering belt (4), a soda ash high-level tank (6) is arranged on the causticizing barrel (5), a reaction tank (7) is arranged on the one side of the reaction tank (7), a coarse brine pump (8) is arranged on one side of the coarse brine pump (8), and a coarse brine barrel (9) is arranged on one side of the coarse brine pump (8).
2. The production equipment for refining brine using alkali residue according to claim 1, characterized in that: A maze trough (10) is provided on one side of the reaction tank (7), a clarification barrel (11) is provided on one side of the maze trough (10), a salt mud trough (12) is provided on one side of the clarification barrel (11), a salt mud pump (13) is provided on one side of the salt mud trough (12), a refined brine storage barrel (14) is provided on one side of the clarification barrel (11), and a refined brine pump (15) is provided on one side of the refined brine storage barrel (14).
3. The production equipment for refining brine using alkali residue according to claim 2, characterized in that: A mud washing bucket (16) is provided on one side of the salt mud pump (13), a waste mud trough (17) is provided at the lower end of the mud washing bucket (16), a waste mud pump (18) is provided on one side of the waste mud trough (17), a miscellaneous water bucket (19) is provided on one side of the mud washing bucket (16), and a miscellaneous water pump (20) is provided on one side of the miscellaneous water bucket (19).
4. The production equipment for refining brine using alkali residue according to claim 3, characterized in that: The crude brine pump (8) is arranged on one side of the salt mud tank (12).
5. The production equipment for refining brine using alkali residue according to claim 4, characterized in that: The waste mud pump (18) is located on one side of the miscellaneous water pump (20).
6. The production equipment for refining brine using alkali residue according to claim 5, characterized in that: The causticizing barrel (5) is arranged on one side of the salt mud tank (12).
7. The production equipment for refining brine using alkali residue according to claim 6, characterized in that: The labyrinth groove (10) is located on one side of the causticizing barrel (5).