CN220364451U - Industrial strong brine and waste gas diversified treatment device - Google Patents
Industrial strong brine and waste gas diversified treatment device Download PDFInfo
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- CN220364451U CN220364451U CN202321473894.7U CN202321473894U CN220364451U CN 220364451 U CN220364451 U CN 220364451U CN 202321473894 U CN202321473894 U CN 202321473894U CN 220364451 U CN220364451 U CN 220364451U
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 111
- 239000012267 brine Substances 0.000 title claims abstract description 88
- 239000002912 waste gas Substances 0.000 title claims abstract description 35
- 238000002425 crystallisation Methods 0.000 claims abstract description 71
- 230000008025 crystallization Effects 0.000 claims abstract description 71
- 150000003839 salts Chemical class 0.000 claims abstract description 70
- 238000004064 recycling Methods 0.000 claims abstract description 29
- 239000002585 base Substances 0.000 claims description 50
- 238000001035 drying Methods 0.000 claims description 39
- 238000000926 separation method Methods 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000001704 evaporation Methods 0.000 claims description 31
- 230000008020 evaporation Effects 0.000 claims description 31
- 238000003860 storage Methods 0.000 claims description 30
- 238000000746 purification Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 230000003647 oxidation Effects 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 19
- 238000000502 dialysis Methods 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 13
- 239000004202 carbamide Substances 0.000 claims description 13
- 229920001429 chelating resin Polymers 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 230000005587 bubbling Effects 0.000 claims description 4
- 238000010612 desalination reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 39
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 28
- 150000002500 ions Chemical class 0.000 description 20
- 229910021529 ammonia Inorganic materials 0.000 description 17
- 239000001569 carbon dioxide Substances 0.000 description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- 239000007789 gas Substances 0.000 description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000003245 coal Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000000909 electrodialysis Methods 0.000 description 6
- 239000002440 industrial waste Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000001223 reverse osmosis Methods 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 4
- 235000017557 sodium bicarbonate Nutrition 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon 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
- 239000013522 chelant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses an industrial strong brine and waste gas diversified treatment device, wherein a strong brine salt separating and purifying module is connected with a salt separating and acid-base preparing module through a pipeline, and the strong brine salt separating and purifying module is also connected with a strong brine crystallization recycling module through a pipeline; the whole process flow has low energy consumption, stable process, environmental protection and economy, and has wide application prospect.
Description
Technical Field
The utility model belongs to the technical field of industrial strong brine and waste gas recycling equipment, and relates to an industrial strong brine and waste gas diversified treatment device.
Background
The salt content of the wastewater in the coal chemical industry is high, and the wastewater can be recycled after relevant treatment. At present, the treatment of strong brine generally adopts a membrane separation or thermal concentration process to enrich the salt in the wastewater. Clear water produced by the processes is reused in a circulating water system, and concentrated water is evaporated and crystallized to obtain salt. The high-salt concentrated water produced after the concentrated brine is concentrated is generally more than 10% in mass percent, enters an evaporation system (usually multi-effect evaporation or mechanical compression evaporation and the like) for further concentration until the salt content reaches 20%, and then enters a crystallizer for crystallization to separate out solid salt. The salt content in the concentrated brine is generally relatively complex, so that the salt which is crystallized is mixed salt.
Aims at solving the problems existing in the prior reverse osmosis strong brine treatment evaporation crystallization process. Chinese patent CN107398181a "an electrodialysis device for the fractional concentration of strong brine in coal chemical industry", proposes a new electrodialysis device for the fractional concentration of strong brine in coal chemical industry. The device can simultaneously realize the concentration of the strong brine and the separation of salts, and can obtain high-purity sodium chloride and sodium sulfate through subsequent treatment, thereby realizing the aims of zero emission of the coal industry strong brine and recycling water resources and salt resources. The process can realize simultaneous concentration and separation, but has the advantages of high power consumption and low nanofiltration separation efficiency, and influences the purity of salt obtained by subsequent evaporation and crystallization.
Chinese patent CN111362480A 'a method for treating reverse osmosis strong brine', a new reverse osmosis strong brine treatment method is provided, acid and alkali are prepared by bipolar membrane electrodialysis after the reverse osmosis strong brine is pretreated and then recycled for related industrial projects, and the treatment cost is reduced without adopting an evaporative crystallization process, but the method is only suitable for the condition that the proportion of sodium chloride and sodium sulfate in the reverse osmosis strong brine is more than 9 or the proportion of sodium sulfate and sodium chloride is more than 9, in the actual industrial projects, the proportion of sodium chloride and sodium sulfate in the reverse osmosis waste water is close, the generated acid and alkali amount is large, and the method cannot be fully utilized by the industrial projects.
In general, a large amount of ammonia-containing waste gas and carbon dioxide waste gas exist in coal chemical engineering projects, and the waste of resources and environmental pollution are caused. The ammonia-containing waste gas mainly comes from purge gas in the production of synthetic ammonia and high-altitude exhaust gas of a urea prilling tower, and other sources include coke oven gas, exhaust gas of an ammonia freezing tank, tail gas of a nitric acid device, running, bubbling, dripping, leaking and the like of equipment in an industrial production device, wherein more than 80% of the ammonia waste gas comes from the synthetic ammonia purge gas. With the rapid development of the ammonia synthesis industry in China, the yield of the synthetic ammonia continuously rises, and the emission amount of the ammonia-containing waste gas is further increased. Ammonia is one of the typical toxic and harmful industrial gaseous pollutants, and a large amount of ammonia-containing industrial tail gas is directly discharged into the atmosphere, so that not only is the loss of synthetic ammonia product caused, but also the living environment of people is deteriorated. Ammonia is oxidized in the atmosphere to generate NOx, acid rain is formed, nitrate is oxidized, and the NOx enters a water circulation system to pollute underground water.
Disclosure of Invention
The utility model aims to provide an industrial strong brine and waste gas diversified treatment device, which solves the problems of difficult treatment of the strong brine and waste gas discharge pollution in the prior art.
The technical scheme adopted by the utility model is that the industrial strong brine and waste gas diversified treatment device comprises a strong brine salt separating and purifying module, wherein the strong brine salt separating and purifying module is connected with a salt separating acid-base making module through a pipeline, and the strong brine salt separating and purifying module is also connected with a strong brine crystallization recycling module through a pipeline.
The utility model is also characterized in that: the strong brine salt separation purification module comprises a strong brine storage tank, an outlet of the strong brine storage tank is communicated with an inlet of a salt separation device, the outlet of the salt separation device is divided into two parts, one part of the strong brine storage tank is communicated with an inlet of a chelating resin exchanger, the other part of the strong brine storage tank is communicated with an inlet of an adsorption-advanced oxidation tower, an outlet of the adsorption-advanced oxidation tower is communicated with a salt separation acid-base preparation module, the chelating resin exchanger is communicated with an inlet of a concentration device, the inlet of the concentration device is also communicated with a salt separation acid-base preparation module, the outlet of the concentration device is divided into two parts, the other part of the strong brine storage tank is communicated with an inlet of a recycling water tank, and the other part of the strong brine storage tank is communicated with a strong brine crystallization recycling module;
the salt-separating acid-base making module comprises an acid-base making device, wherein an outlet of the acid-base making device is divided into two parts, one part is communicated with an inlet of an acid storage tank, the other part is communicated with an inlet of an alkali storage tank, the acid-base making device is further provided with a desalted liquid outlet, an inlet of the acid-base making device is communicated with an outlet of a single ion diffusion dialysis device, and an inlet of the single ion diffusion dialysis device is respectively communicated with a concentration device and an adsorption-advanced oxidation tower.
The strong brine crystallization recycling module comprises a urea device, an outlet of the urea device is communicated with an inlet of a purifying device, an outlet of the purifying device is communicated with a reaction device, the inlet of the reaction device is further divided into three strands, one strand is communicated with an outlet of a purifying and concentrating device, the other strand is communicated with an outlet of an MVR evaporation crystallization device, the other strand is communicated with an outlet of the concentrating device, the outlet of the reaction device is communicated with an inlet of a crystallization device, the outlet of one side of the crystallization device is communicated with a first drying device, the outlet of the other side of the crystallization device is communicated with an inlet of the MVR evaporation crystallization device, the outlet of the MVR evaporation crystallization device is communicated with an inlet of a second drying device, and the inlet of the purifying and concentrating device is communicated with an outlet of a torch device.
The first drying device is also provided with a desalted liquid outlet.
The second drying device is also provided with a residual salt outlet.
The first drying device and the second drying device are spray dryers.
The reaction device is any one of a kettle type reactor, a tower type reactor, a bubbling bed reactor, a spray tower reactor or a plate type tower reactor.
The beneficial effects of the utility model are as follows: 1. the utility model uses the industrial strong brine and the industrial waste gas (ammonia gas and carbon dioxide) to produce the products of sodium carbonate, acid and alkali and product water with high added value through the processes of salt separation, purification and concentration, acid and alkali preparation, chemical reaction, evaporation and crystallization and the like; the whole process flow has low energy consumption, stable process, environmental protection and economy, and has wide application prospect;
2. the utility model fully utilizes industrial high-salt water, ammonia-containing waste gas, carbon dioxide-containing waste gas and industrial waste heat, changes the three wastes of coal chemical industry and coal mine into valuable, reduces the treatment cost of industrial waste water of enterprises, can bring considerable income to enterprises, and provides references and basis for the treatment and recycling of industrial strong-salt water and waste gas, thereby having great significance;
3. the method can directly use the sodium carbonate and the acid and the alkali produced by the preparation in the water treatment process, including the processes of softening a high-density pool, removing hard silicon, adjusting pH and the like, furthest utilizes the water and the salt in the high-salt water as resources, reduces the pollution of carbon dioxide and ammonia gas discharged to the environment, simultaneously furthest utilizes the industrial waste heat, meets the low-carbon environment-friendly requirement, and has remarkable economic, social and ecological significance.
Drawings
FIG. 1 is a schematic diagram of a device for treating industrial brine and waste gas in a diversified manner;
FIG. 2 is a schematic structural view of an industrial brine and waste gas diversified treatment device according to the present utility model;
FIG. 3 is a schematic process flow diagram of the industrial brine and waste gas diversification treatment device of the utility model.
In the figure, a concentrated brine salt purification module, a salt separation acid-base preparation module and a concentrated brine crystallization recycling module are shown in the figure;
101. strong brine storage tank, 102, salt separation device, 103, chelating resin exchanger, 104, adsorption-advanced oxidation column, 105, concentration device, 106, reuse water tank, 201, single ion diffusion dialysis device, 202, acid and base making device, 203, acid storage tank, 204, base storage tank, 301, reaction device, 302, urea device, 303, purification device, 304, flare device, 305, purification concentration device, 306, crystallization device, 307, first drying device, 308, MVR evaporation crystallization device, 309, second drying device.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The industrial strong brine and waste gas diversified treatment device disclosed by the utility model is shown in figures 1 and 2, and comprises a strong brine salt separation purification module 1, wherein the strong brine salt separation purification module 1 is connected with a salt separation acid-base preparation module 2, and the strong brine salt separation purification module 1 is also connected with a strong brine crystallization recycling module 3;
the strong brine salt separating and purifying module 1 comprises a strong brine storage tank 101, an outlet of the strong brine storage tank 101 is communicated with an inlet of a salt separating device 102, an outlet of the salt separating device 102 is respectively communicated with an inlet of a chelating resin exchanger 103 and an inlet of an adsorption-advanced oxidation tower 104, an outlet of the adsorption-advanced oxidation tower 104 is communicated with a salt separating acid-base making module 2, the chelating resin exchanger 103 is communicated with an inlet of a concentrating device 105, the inlet of the concentrating device 105 is also communicated with the salt separating acid-base making module 2, an outlet of the concentrating device 105 is divided into two streams, one stream is communicated with an inlet of a recycling water tank 106, and the other stream is communicated with a strong brine crystallization recycling module 3;
the salt-separating acid-base making module 2 comprises an acid-base making device 202, wherein the outlet of the acid-base making device 202 is divided into two parts, one part is communicated with the inlet of an acid storage tank 203, the other part is communicated with the inlet of an alkali storage tank 204, the acid-base making device 202 is also provided with a desalted liquid outlet, the inlet of the acid-base making device 202 is communicated with the outlet of a single ion diffusion dialysis device 201, and the inlet of the single ion diffusion dialysis device 201 is respectively communicated with a concentration device 105 and an adsorption-advanced oxidation tower 104;
the concentrated brine crystallization recycling module 3 comprises a urea device 302, an outlet of the urea device 302 is communicated with an inlet of a purifying device 303, an outlet of the purifying device 303 is communicated with a reaction device 301, the inlet of the reaction device 301 is further divided into three parts, one part is communicated with an outlet of a purifying and concentrating device 305, an inlet of the purifying and concentrating device 305 is communicated with an outlet of a torch device 304, the other part is communicated with an outlet of an MVR evaporation and crystallization device 308, the other part is communicated with an outlet of a concentrating device 105, the outlet of the reaction device 301 is communicated with an inlet of a crystallization device 306, an outlet on one side of the crystallization device 306 is communicated with a first drying device 307, sodium bicarbonate subjected to crystallization sedimentation is sent into the first drying device 307, then industrial waste heat is introduced to dry the sodium bicarbonate, sodium carbonate crystallization salt is obtained, the first drying device 307 is further provided with a residual salt outlet, sodium carbonate crystallization salt is discharged from the first drying device 307, an outlet on the other side of the crystallization device 306 is communicated with an inlet of the MVR evaporation and crystallization device 308, the outlet of the MVR evaporation and crystallization device 308 is communicated with an inlet of a second drying device 309, the second drying device 309 is further provided with a residual salt outlet, and the first drying device 307 and the second drying device 309 are both spray dryers.
The salt separating device 102 adopts an electrodialysis device, the electrodialysis device is driven by new energy generated by photovoltaic/wind power generation, a special membrane for multivalent ion separation is arranged in the electrodialysis device, and multivalent ions in strong brine are separated, so that the purity of the prepared acid-base and sodium carbonate is ensured.
The impurities in the produced water are reduced after the impurities are removed in the adsorption-advanced oxidation tower 104, so that the stable operation of the subsequent process and the quality of the prepared chemicals are ensured.
The bubbler is arranged in the chelate resin exchanger 103, so that ions in water are fully contacted with the chelate resin, the hardness in produced water is reduced to a very low level, and the stable operation of subsequent evaporation crystallization is ensured.
The single ion diffusion dialysis device 201 adopts a diffusion dialysis device, a multivalent ion separation membrane is arranged in the diffusion dialysis device, monovalent salt solution is arranged on the permeate side, bivalent or multivalent solution is arranged on the concentrate side, the function of further separating salt from concentrated water of the salt separating device is achieved, and the quality of the prepared chemicals is effectively guaranteed.
The reaction device 301 is a kettle type reactor, a tower type reactor, a bubbling bed reactor, a spray tower reactor, a plate type tower reactor and the like, and saturated brine is fully contacted with ammonia gas and carbon dioxide in countercurrent in the reaction device, and fully reacted to produce a preset product.
The purification device 303 adopts an electric dust collector, and after dust removal and impurity removal, ammonia-containing waste gas is purified, so that impurities can be prevented from entering a subsequent evaporation crystallization process, and the quality of a crystallized salt product is influenced.
The purifying and concentrating device 305 adopts a carbon dioxide membrane separator, and can purify and concentrate carbon dioxide by separating and concentrating the carbon dioxide, so that the reaction efficiency and rate of the carbon dioxide, ammonia gas and strong brine are improved, and the quality of products of subsequent crystallized salts is improved.
The MVR evaporation crystallization device 308 realizes crystallization separation and precipitation of strong brine through an evaporation crystallization system, and then salt slurry is further dried by a dryer to generate salt cakes, and the crystallized salt is recycled. The water resource and the salt resource are maximally recycled through an evaporation crystallization process.
The first drying device and the second drying device adopt spray dryers, heat sources used by the first drying device and the second drying device are waste heat or waste heat of coal chemical industry, and related crystallization salts are crystallized through drying treatment of water-containing materials.
The utility model relates to an industrial strong brine and waste gas diversified treatment device, which has the following working principle: as shown in fig. 3, the concentrated brine is sent into a concentrated brine storage tank 101, the concentrated brine is pumped into a salt separating device 102, the concentrated brine is separated into water mainly containing monovalent ions and concentrated water mainly containing divalent ions through the salt separating device 102, the water mainly containing monovalent ions is sent into a chelating resin exchanger 103 for impurity removal, silicon removal, hardness removal, COD removal and the like are carried out according to the impurity types in the water, the water produced by the chelating resin exchanger 103 and the penetrating fluid of a single ion diffusion dialysis device 201 are sent into a concentrating device 105 for further concentration, the water produced by the concentrating device 105 is directly sent into a recycling water tank for recycling, and the saturated brine produced by the concentrating device 105 is sent into a subsequent process. The method comprises the steps that concentrated water mainly containing divalent ions generated by a salt separation device 102 is sent into an adsorption-advanced oxidation tower 104, silicon removal, hardness removal, COD removal and the like are carried out according to the impurity types in the concentrated water, water produced by the adsorption-advanced oxidation tower 104 is sent into a single ion diffusion dialysis device 201, permeate and concentrate are generated after diffusion dialysis treatment, the permeate is sent into a concentration device 105, the concentrate is sent into an acid-base making device 202, the concentrate is processed by the acid-base making device 202 to prepare corresponding acid and base, the corresponding acid and base are sent into an acid storage tank 203 and an alkali storage tank 204 respectively, desalinated liquid generated by the acid-base making device 202 is recycled or returned to the front end, saturated brine generated by the concentration device 105 is sent into a reaction device 301, ammonia-containing waste gas generated by a urea device 302 is sent into a purification device 303 to be treated, acid other cost and particulate matters in the waste gas are removed, and the ammonia-containing waste gas is sent into the reaction device 301; delivering the carbon dioxide-containing waste gas in the flare device 304 into a purifying and concentrating device 305 to remove the impurity gas cost in the waste gas, purifying and concentrating carbon dioxide, and delivering the treated carbon dioxide gas into a reaction device 301; saturated brine reacts with ammonia gas and carbon dioxide in the reaction device 301 to produce corresponding ammonium salt and sodium bicarbonate. The brine mixture produced by the reaction device 301 is sent into a crystallization device 306, sodium bicarbonate is crystallized and settled in the crystallization device 306, the crystallized and settled sodium bicarbonate is sent into a first drying device 307, and industrial waste heat is introduced into the first drying device 307 to dry the sodium bicarbonate, so that sodium carbonate crystal salt is obtained.
The mother liquor generated by the crystallization device 306 is sent into an MVR evaporation crystallization device 308, the salt slurry generated by evaporation concentration is sent into a drying device 2-19, and the carbon dioxide generated by the decomposition of the MVR evaporation crystallization device 308 is returned into a reaction device 301 for recycling. And introducing industrial waste heat into a second drying device 309 to dry the crystallized mixed salt to obtain unreacted mixed salt, and recycling condensate generated by the MVR evaporation crystallization device 308.
Example 1
As shown in fig. 1, the industrial strong brine and waste gas diversified treatment device provided by the embodiment comprises a strong brine salt purification module 1, wherein the strong brine salt purification module 1 is connected with a salt separation acid-base preparation module 2, and the strong brine salt purification module 1 is also connected with a strong brine crystallization recycling module 3.
Example 2
As shown in fig. 1 and 2, the industrial brine and waste gas diversified treatment device provided by the embodiment comprises a brine split salt purification module 1, wherein the brine split salt purification module 1 is connected with a brine split acid-base preparation module 2, and the brine split salt purification module 1 is also connected with a brine split crystallization recycling module 3;
the strong brine salt separation purification module 1 comprises a strong brine storage tank 101, an outlet of the strong brine storage tank 101 is communicated with an inlet of a salt separation device 102, an outlet of the salt separation device 102 is divided into two parts, one part is communicated with an inlet of a chelating resin exchanger 103, the other part is communicated with an inlet of an adsorption-advanced oxidation tower 104, an outlet of the adsorption-advanced oxidation tower 104 is communicated with a salt separation acid-base preparation module 2, the chelating resin exchanger 103 is communicated with an inlet of a concentration device 105, the inlet of the concentration device 105 is also communicated with the salt separation acid-base preparation module 2, an outlet of the concentration device 105 is divided into two parts, the other part is communicated with an inlet of a recycling water tank 106, and the other part is communicated with a strong brine crystallization recycling module 3;
the salt-separating acid-base making module 2 comprises an acid-base making device 202, wherein the outlet of the acid-base making device 202 is divided into two parts, one part is communicated with the inlet of an acid storage tank 203, the other part is communicated with the inlet of an alkali storage tank 204, the acid-base making device 202 is also provided with a desalted liquid outlet, the inlet of the acid-base making device 202 is communicated with the outlet of a single ion diffusion dialysis device 201, and the inlet of the single ion diffusion dialysis device 201 is respectively communicated with a concentration device 105 and an adsorption-advanced oxidation tower 104;
the strong brine crystallization recycling module 3 comprises a urea device 302, wherein the outlet of the urea device 302 is communicated with the inlet of a purifying device 303, the outlet of the purifying device 303 is communicated with a reaction device 301, the inlet of the reaction device 301 is further divided into three parts, one part is communicated with the outlet of a purifying and concentrating device 305, the other part is communicated with one outlet of an MVR evaporation and crystallization device 308, the other part is communicated with the outlet of a concentrating device 105, the outlet of the reaction device 301 is communicated with the inlet of a crystallization device 306, the outlet of one side of the crystallization device 30) is communicated with a first drying device 307, the outlet of the other side of the crystallization device 306 is communicated with the inlet of an MVR evaporation and crystallization device 308, the outlet of the MVR evaporation and crystallization device 308 is communicated with the inlet of a second drying device 309, and the inlet of the purifying and concentrating device 305 is communicated with the outlet of a torch device 304.
Example 3
As shown in fig. 1 and 2, the industrial brine and waste gas diversified treatment device provided by the embodiment comprises a brine split salt purification module 1, wherein the brine split salt purification module 1 is connected with a brine split acid-base preparation module 2, and the brine split salt purification module 1 is also connected with a brine split crystallization recycling module 3;
the strong brine salt separation purification module 1 comprises a strong brine storage tank 101, an outlet of the strong brine storage tank 101 is communicated with an inlet of a salt separation device 102, an outlet of the salt separation device 102 is divided into two parts, one part is communicated with an inlet of a chelating resin exchanger 103, the other part is communicated with an inlet of an adsorption-advanced oxidation tower 104, an outlet of the adsorption-advanced oxidation tower 104 is communicated with a salt separation acid-base preparation module 2, the chelating resin exchanger 103 is communicated with an inlet of a concentration device 105, the inlet of the concentration device 105 is also communicated with the salt separation acid-base preparation module 2, an outlet of the concentration device 105 is divided into two parts, the other part is communicated with an inlet of a recycling water tank 106, and the other part is communicated with a strong brine crystallization recycling module 3;
the salt-separating acid-base making module 2 comprises an acid-base making device 202, wherein the outlet of the acid-base making device 202 is divided into two parts, one part is communicated with the inlet of an acid storage tank 203, the other part is communicated with the inlet of an alkali storage tank 204, the acid-base making device 202 is also provided with a desalted liquid outlet, the inlet of the acid-base making device 202 is communicated with the outlet of a single ion diffusion dialysis device 201, and the inlet of the single ion diffusion dialysis device 201 is respectively communicated with a concentration device 105 and an adsorption-advanced oxidation tower 104;
the concentrated brine crystallization recycling module 3 comprises a urea device 302, wherein the outlet of the urea device 302 is communicated with the inlet of a purifying device 303, the outlet of the purifying device 303 is communicated with a reaction device 301, the inlet of the reaction device 301 is further divided into three parts, one part is communicated with the outlet of a purifying and concentrating device 305, the other part is communicated with one outlet of an MVR evaporation and crystallization device 308, the other part is communicated with the outlet of a concentrating device 105, the outlet of the reaction device 301 is communicated with the inlet of a crystallization device 306, the outlet of one side of the crystallization device 30) is communicated with a first drying device 307, the outlet of the other side of the crystallization device 306 is communicated with the inlet of an MVR evaporation and crystallization device 308, the outlet of the MVR evaporation and crystallization device 308 is communicated with the inlet of a second drying device 309, and the inlet of the purifying and concentrating device 305 is communicated with the outlet of a torch device 304;
the first drying device 307 is further provided with a desalinated liquid outlet, the second drying device 309 is further provided with a residual salt outlet, and the first drying device 307 and the second drying device 309 are spray dryers.
Claims (5)
1. The industrial strong brine and waste gas diversified treatment device is characterized by comprising a strong brine salt purification module (1), wherein the strong brine salt purification module (1) is connected with a salt separation acid-base preparation module (2) through a pipeline, and the strong brine salt purification module (1) is also connected with a strong brine crystallization recycling module (3) through a pipeline;
the concentrated brine desalination purification module (1) comprises a concentrated brine storage tank (101), wherein an outlet of the concentrated brine storage tank (101) is communicated with an inlet of a salt separation device (102), an outlet of the salt separation device (102) is divided into two parts, one part of the concentrated brine is communicated with an inlet of a chelating resin exchanger (103), the other part of the concentrated brine is communicated with an inlet of an adsorption-advanced oxidation tower (104), an outlet of the adsorption-advanced oxidation tower (104) is communicated with a salt separation acid-base making module (2), the chelating resin exchanger (103) is communicated with an inlet of a concentration device (105), the inlet of the concentration device (105) is also communicated with the salt separation acid-base making module (2), the outlet of the concentration device (105) is divided into two parts, one part of the concentrated brine is communicated with an inlet of a reuse water tank (106), and the other part of the concentrated brine is communicated with a concentrated brine crystallization recycling module (3);
the salt-separating acid-base making module (2) comprises an acid-base making device (202), wherein an outlet of the acid-base making device (202) is divided into two streams, one stream is communicated with an inlet of an acid storage tank (203), the other stream is communicated with an inlet of an alkali storage tank (204), the acid-base making device (202) is further provided with a desalted liquid outlet, an inlet of the acid-base making device (202) is communicated with an outlet of a single ion diffusion dialysis device (201), and an inlet of the single ion diffusion dialysis device (201) is respectively communicated with a concentration device (105) and an adsorption-advanced oxidation tower (104);
the strong brine crystallization recycling module (3) comprises a urea device (302), an outlet of the urea device (302) is communicated with an inlet of a purification device (303), an outlet of the purification device (303) is communicated with a reaction device (301), the inlet of the reaction device (301) is further divided into three parts, one part is communicated with an outlet of a purification concentration device (305), the other part is communicated with an outlet of an MVR evaporation crystallization device (308), the other part is communicated with an outlet of a concentration device (105), an outlet of the reaction device (301) is communicated with an inlet of a crystallization device (306), an outlet of one side of the crystallization device (306) is communicated with an inlet of the first drying device (307), an outlet of the other side of the crystallization device (306) is communicated with an inlet of the MVR evaporation crystallization device (308), an outlet of the MVR evaporation crystallization device (308) is communicated with an inlet of a second drying device (309), and an inlet of the purification concentration device (305) is communicated with an outlet of a torch device (304).
2. The industrial brine and waste gas multi-treatment device according to claim 1, wherein the first drying device (307) is further provided with a desalinated liquid outlet.
3. The industrial brine and waste gas multi-treatment device according to claim 1, wherein the second drying device (309) is further provided with a residual salt outlet.
4. The industrial brine and waste gas multi-treatment device according to claim 1, wherein the first drying device (307) and the second drying device (309) are spray dryers.
5. The industrial brine and waste gas multi-treatment device according to claim 1, wherein the reaction device (301) is any one of a tank reactor, a tower reactor, a bubbling bed reactor, a spray tower reactor, and a plate tower reactor.
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| CN202321473894.7U CN220364451U (en) | 2023-06-09 | 2023-06-09 | Industrial strong brine and waste gas diversified treatment device |
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