CN219860602U - Regeneration sodium carbonate preparing device for solid waste sodium salt - Google Patents
Regeneration sodium carbonate preparing device for solid waste sodium salt Download PDFInfo
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- CN219860602U CN219860602U CN202320785777.8U CN202320785777U CN219860602U CN 219860602 U CN219860602 U CN 219860602U CN 202320785777 U CN202320785777 U CN 202320785777U CN 219860602 U CN219860602 U CN 219860602U
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- solid waste
- tower
- reactor
- absorption tower
- ammonium sulfate
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims abstract description 31
- 239000002910 solid waste Substances 0.000 title claims abstract description 27
- 229910000029 sodium carbonate Inorganic materials 0.000 title claims abstract description 17
- 159000000000 sodium salts Chemical class 0.000 title claims abstract description 14
- 230000008929 regeneration Effects 0.000 title description 2
- 238000011069 regeneration method Methods 0.000 title description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 70
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 36
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 33
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 31
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 30
- 238000007670 refining Methods 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims abstract description 26
- 238000004821 distillation Methods 0.000 claims abstract description 22
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 15
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000001172 regenerating effect Effects 0.000 claims abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 238000005336 cracking Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000005185 salting out Methods 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 7
- 238000004537 pulping Methods 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 22
- 239000011780 sodium chloride Substances 0.000 abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract description 10
- 235000011152 sodium sulphate Nutrition 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000012452 mother liquor Substances 0.000 description 4
- 239000010413 mother solution Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses a device for preparing sodium carbonate by regenerating solid waste sodium salt, and belongs to the technical field of chemical industry. Comprises a solid waste refining system, a baking soda reaction system, an ammonia distillation system, an ammonium chloride system, an ammonium sulfate refining kettle and a sulfuric acid evaporator; the solid waste refining system comprises a cracking furnace, a dissolving tank and an impurity dehydrator which are connected in sequence; the baking soda reaction system comprises a single-pass reactor and a double-pass reactor which are connected with the alkali production tower, and the single-pass reactor is connected with the double-pass reactor; the ammonia distillation system comprises an ammonia distillation tower and an absorption tower; the dissolving tank is connected with the absorption tower through a pipeline, the absorption tower is connected with the one-way reactor, and the two-way reactor is connected with the ammonia distillation tower; the ammonium chloride system is respectively connected with an ammonia still and an absorption tower, and the ammonia still is sequentially connected with an ammonium sulfate refining kettle and an ammonium sulfate evaporator. The utility model has wide application and low cost, can refine and regenerate the solid dangerous waste sodium sulfate/sodium chloride to prepare the chemical basic raw material-sodium carbonate, and simultaneously produces agricultural grade ammonium sulfate/ammonium chloride with high added value.
Description
Technical Field
The utility model belongs to the technical field of chemical industry, relates to treatment of sodium salt of solid waste sodium sulfate/sodium chloride, and in particular relates to a device for preparing sodium carbonate by regenerating solid waste sodium salt.
Background
The solid waste sodium sulfate/sodium chloride is a solid dangerous product produced in fine chemical industry, high-concentration wastewater, printing and dyeing industry, pharmacy industry, pesticide industry, metallurgical industry, phosphorus chemical industry and other industries. Aiming at solid waste sodium salt, the existing disposal technology comprises a landfill method and a high-temperature oxidation method. Among them, the landfill method is a main disposal method of industrial waste salt, but the landfill method has the following problems: 1. the investment is high, the occupied area is large, and the soil environment is polluted; 2. the domestic rigid landfill is less; 3. the landfill cost is high. The high-temperature oxidation method utilizes the characteristic that organic impurities in the salt slag are easy to decompose and volatilize at high temperature, and the organic impurities are decomposed into volatile gas and carbon slag at high temperature, so that the aim of removing the organic impurities is fulfilled, but the high-temperature oxidation method has the problems of high production cost and low utilization rate of waste salt.
In view of the above, a process for realizing comprehensive utilization of waste salt resources and solving the problem of industrial waste salt treatment is developed.
Disclosure of Invention
The utility model aims to provide a device for preparing sodium carbonate by regenerating solid waste sodium salt.
The utility model is realized by the following technical scheme:
the device for preparing the sodium carbonate by regenerating the sodium salt of the solid waste comprises a solid waste refining system, a baking soda reaction system, an ammonia distillation system, an ammonium chloride system, an ammonium sulfate refining kettle and a sulfuric acid evaporator;
the solid waste refining system comprises a cracking furnace, a dissolving tank and an impurity dehydrator which are sequentially connected through pipelines; the baking soda reaction system comprises a single-pass reactor and a double-pass reactor which are respectively connected with the alkali production tower, and the single-pass reactor and the double-pass reactor are connected through a pipeline; the ammonia distillation system comprises an ammonia distillation tower and an absorption tower which are connected through a pipeline;
the dissolving tank is connected with the absorption tower through a pipeline, the absorption tower is connected with the one-way reactor, and the two-way reactor is connected with the ammonia distillation tower; the ammonium chloride system is respectively connected with the ammonia still and the absorption tower through pipelines, and the ammonia still is sequentially connected with the ammonium sulfate refining kettle and the ammonium sulfate evaporator through pipelines.
Further, the solid waste refining system further comprises a reagent storage tank, the reagent storage tank is connected with an impurity dehydrator, reagents are added into the reagent storage tank, insoluble impurities in the precipitate are removed by the reagents, and the impurities are separated from solution liquid through the dehydrator, so that impurity sludge is recovered.
The baking soda reaction system also comprises a pulping device, the reactant is added into the pulping device for pulping, the one-way reactor is added for generating sodium bicarbonate, the mother solution after the one-way reactor is centrifuged and the mixed salt returned by the ammonium sulfate refining system enter the two-way reactor, the reactant slurry is added for reacting, and the sodium bicarbonate can be generated again.
The ammonium chloride comprises a cold-precipitation crystallizer and a salting-out crystallizer which are communicated through a pipeline, the cold-precipitation crystallizer is respectively connected with an ammonia still and a centrifuge, the salting-out crystallizer is connected with an absorption tower, the cold-precipitation salting-out system is a system for treating solid dangerous waste sodium chloride and byproduct ammonium chloride, the mother liquor at the bottom of the ammonia still enters the cold-precipitation crystallizer, ammonium chloride is precipitated after entering the salting-out crystallizer, and the salting-out mother liquor enters the absorption tower.
The utility model relates to a regenerated sodium carbonate preparing device which can be used for treating solid dangerous waste sodium sulfate/sodium chloride produced in industries such as coking, fine chemical industry, chemical fiber, pesticides, medicines, pesticide intermediates and the like, refining and regenerating the solid dangerous waste sodium sulfate/sodium chloride to prepare a chemical basic raw material-sodium carbonate, and simultaneously preparing agricultural grade ammonium sulfate/ammonium chloride with high added value as byproducts; the ammonia distillation system comprises an ammonia distillation tower, an absorption tower and an auxiliary system, wherein tail gas evaporated by the ammonia distillation tower enters the absorption tower and is absorbed by sodium sulfate/sodium chloride solution in the absorption tower to prepare carbonated solution of sodium sulfate/sodium chloride; the sodium bicarbonate reaction system comprises a single-pass reactor, a double-pass reactor, a reactant preparation, a high-temperature countercurrent alkali preparation tower and auxiliary facilities, wherein the double-pass reactor is a tower body for preparing sodium carbonate by decomposing sodium bicarbonate generated by the sodium bicarbonate reaction system in the high-temperature countercurrent alkali preparation tower in the process of treating solid waste sodium sulfate by adding reactant slurry into slurry prepared by mixed salt returned by the centrifugal mother liquor of the single-pass reactor and the ammonium sulfate refining system for reaction; the ammonium sulfate refining system mainly comprises an ammonium sulfate refining kettle, a centrifuge and auxiliary facilities, wherein ammonium sulfate is refined through the ammonium sulfate refining kettle, mixed salt generated in the refining process is returned to the double-pass reactor, and refined mother liquor enters an ammonium sulfate evaporation system; the ammonium sulfate system is an ammonium sulfate solution entering the system, an ammonium sulfate product is obtained through evaporative crystallization of an ammonium sulfate evaporation unit, and the product can be used as agricultural grade ammonium sulfate for sale after being dried; the cold salting-out system comprises a salting-out crystallizer, a cold salting-out crystallizer, a heat exchanger, an external cooler and auxiliary facilities, and is a system for treating solid-risk waste sodium chloride and byproduct ammonium chloride. And (3) enabling the mother solution at the bottom of the ammonia still to enter a cold-precipitation crystallizer, separating out ammonium chloride, and enabling the salting-out mother solution to enter an absorption tower.
The utility model has wide application and low cost, can refine and regenerate the solid dangerous waste sodium sulfate/sodium chloride to prepare the chemical basic raw material-sodium carbonate, and simultaneously produces agricultural grade ammonium sulfate/ammonium chloride with high added value.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present utility model;
in the figure: 1-cracking furnace, 2-dissolving tank, 3-impurity dehydrator, 4-medicament storage tank, 5-alkali making tower, 6-single pass reactor, 7-double pass reactor, 8-ammonia still, 9-absorption tower, 10-ammonium sulfate refining kettle, 11-ammonium sulfate evaporator, 12-buffer tank, 13-pulping device, 14-cold separation crystallizer, 15-salting-out crystallizer and 16-centrifuge.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The device for preparing sodium carbonate by regenerating solid waste sodium salt shown in figure 1 comprises a solid waste refining system, a baking soda reaction system, an ammonia distillation system, an ammonium chloride system, an ammonium sulfate refining kettle and a sulfuric acid evaporator;
the solid waste refining system comprises a cracking furnace 1, a dissolving tank 2 and an impurity dehydrator 3 which are sequentially connected through pipelines; the baking soda reaction system comprises a single-pass reactor 6 and a double-pass reactor 4 which are respectively connected with the alkali production tower 5, wherein the single-pass reactor 6 and the double-pass reactor 7 are connected through a pipeline; the ammonia distillation system comprises an ammonia distillation tower 8 and an absorption tower 9 which are connected through pipelines;
the dissolving tank 2 is connected with an absorption tower 9 through a pipeline, the absorption tower 9 is connected with a single-pass reactor 6, and a double-pass reactor 7 is connected with an ammonia distillation tower 8; the ammonium chloride system is respectively connected with an ammonia still 8 and an absorption tower 9 through pipelines, and the ammonia still 8 is sequentially connected with an ammonium sulfate refining kettle 10 and an ammonium sulfate evaporator 11 through pipelines.
Wherein the solid waste refining system further comprises a medicament storage tank 4, the medicament storage tank 4 is connected with the impurity dehydrator 3, and the dissolving tank is further connected with a buffer tank 12; the baking soda reaction system also comprises a pulping device 13, and the pulping device 13 is respectively connected with the single-pass reactor 6 and the double-pass reactor 7 through pipelines; the ammonium chloride system comprises a cold-precipitation crystallizer 14 and a salting-out crystallizer 15 which are communicated through a pipeline, wherein the cold-precipitation crystallizer 14 is respectively connected with an ammonia distillation tower 8 and a centrifuge 16, and the salting-out crystallizer 15 is connected with an absorption tower 9.
During operation, the solid waste sodium salt is used for cracking, dissolving and precipitating organic matters through the fuel gas of the cracking furnace, medicaments are added into the precipitate to remove insoluble impurities, and sludge is recovered after dehydration; the saturated liquid is fed into an absorption tower to absorb tail gas evaporated by an ammonia distillation tower to synthesize carbonated liquid of sodium sulfate/sodium chloride, reactants are added into a single-pass reactor and a double-pass reactor to form sodium bicarbonate, and sodium carbonate is prepared by a high-temperature countercurrent alkali preparation tower; the mother solution at the bottom of the ammonia still sequentially enters a cold precipitation crystallizer and a salting-out crystallizer to separate out ammonium chloride; the solution produced by the ammonia still enters an ammonium sulfate refining kettle, mixed salt is separated, the mixed salt easily enters an ammonium sulfate evaporator or returns to a double-pass reactor, and the ammonium sulfate is obtained after centrifugal drying by the ammonium sulfate evaporator.
And all that is not described in detail in this specification is well known to those skilled in the art.
Claims (4)
1. The device for preparing the sodium carbonate by regenerating the sodium salt of the solid waste is characterized by comprising a solid waste refining system, a baking soda reaction system, an ammonia distillation system, an ammonium chloride system, an ammonium sulfate refining kettle and a sulfuric acid evaporator;
the solid waste refining system comprises a cracking furnace, a dissolving tank and an impurity dehydrator which are sequentially connected through pipelines; the baking soda reaction system comprises a single-pass reactor and a double-pass reactor which are respectively connected with the alkali production tower, and the single-pass reactor and the double-pass reactor are connected through a pipeline; the ammonia distillation system comprises an ammonia distillation tower and an absorption tower which are connected through a pipeline;
the dissolving tank is connected with the absorption tower through a pipeline, the absorption tower is connected with the one-way reactor, and the two-way reactor is connected with the ammonia distillation tower; the ammonium chloride system is respectively connected with the ammonia still and the absorption tower through pipelines, and the ammonia still is sequentially connected with the ammonium sulfate refining kettle and the ammonium sulfate evaporator through pipelines.
2. The device for preparing sodium carbonate by regenerating solid waste sodium salt according to claim 1, wherein the solid waste refining system further comprises a medicament storage tank, and the medicament storage tank is connected with an impurity dehydrator.
3. The device for preparing sodium carbonate by regenerating solid waste sodium salt according to claim 1, wherein the baking soda reaction system further comprises a pulping device which is respectively connected with the single-pass reactor and the double-pass reactor through pipelines.
4. The device for preparing sodium carbonate by regenerating solid waste sodium salt according to claim 1, wherein the ammonium chloride comprises a cold-precipitation crystallizer and a salting-out crystallizer which are communicated through a pipeline, the cold-precipitation crystallizer is respectively connected with an ammonia distillation tower and a centrifuge, and the salting-out crystallizer is connected with an absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320785777.8U CN219860602U (en) | 2023-04-11 | 2023-04-11 | Regeneration sodium carbonate preparing device for solid waste sodium salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320785777.8U CN219860602U (en) | 2023-04-11 | 2023-04-11 | Regeneration sodium carbonate preparing device for solid waste sodium salt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219860602U true CN219860602U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320785777.8U Active CN219860602U (en) | 2023-04-11 | 2023-04-11 | Regeneration sodium carbonate preparing device for solid waste sodium salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219860602U (en) |
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2023
- 2023-04-11 CN CN202320785777.8U patent/CN219860602U/en active Active
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