CN110586615A - Continuous preparation process of saturated brine - Google Patents
Continuous preparation process of saturated brine Download PDFInfo
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- CN110586615A CN110586615A CN201910822280.7A CN201910822280A CN110586615A CN 110586615 A CN110586615 A CN 110586615A CN 201910822280 A CN201910822280 A CN 201910822280A CN 110586615 A CN110586615 A CN 110586615A
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- washing
- salt
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- brine
- saturated
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 42
- 238000005406 washing Methods 0.000 claims abstract description 99
- 150000003839 salts Chemical class 0.000 claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000012267 brine Substances 0.000 claims abstract description 25
- 239000012452 mother liquor Substances 0.000 claims abstract description 24
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000003599 detergent Substances 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 14
- 231100000719 pollutant Toxicity 0.000 claims abstract description 14
- 238000003795 desorption Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000002920 hazardous waste Substances 0.000 claims abstract description 10
- 238000002425 crystallisation Methods 0.000 claims abstract description 8
- 230000008025 crystallization Effects 0.000 claims abstract description 8
- VLCKYVBNCHSKIQ-UHFFFAOYSA-M azanium sodium dichloride hydrate Chemical class [NH4+].O.[Na+].[Cl-].[Cl-] VLCKYVBNCHSKIQ-UHFFFAOYSA-M 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims description 27
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical group N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 238000005119 centrifugation Methods 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 235000019270 ammonium chloride Nutrition 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000010413 mother solution Substances 0.000 description 5
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- ZBMRKNMTMPPMMK-UHFFFAOYSA-N 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid;azane Chemical compound [NH4+].CP(O)(=O)CCC(N)C([O-])=O ZBMRKNMTMPPMMK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a continuous preparation process of saturated brine, belonging to the field of hazardous waste treatment, wherein saturated brine of hazardous waste salt is used as a washing liquid, the washing liquid enters a third-stage washing kettle for third-stage washing, third-stage centrifugal mother liquor is obtained through centrifugation, the washing liquid enters a second-stage washing kettle for second-stage washing, second-stage centrifugal mother liquor is obtained through centrifugation, the washing liquid enters a first-stage washing kettle for first-stage washing, first-stage centrifugal mother liquor is obtained through centrifugation, the first-stage centrifugal mother liquor passes through an oxidation evaporation crystallization device, condensed water enters a pure brine preparation device, the mother liquor enters a subsequent device, salt is produced through a thermal desorption drying machine, the salt enters the pure brine preparation device, and the salt is mixed with the condensed water to prepare saturated ammonium chloride brine with the; the saturated saline water prepared in the invention is used as a detergent in the system, and is continuously circulated and regenerated, the washed pollutants are accumulated in the evaporation mother liquor, and the pollutants are removed by the two-in-one washing and filtering device, so that secondary pollution is avoided.
Description
Technical Field
The invention belongs to the field of hazardous waste treatment, relates to a preparation process of saturated brine in a hazardous waste salt refining process, and particularly relates to a continuous preparation process of saturated brine.
Background
The problem of byproduct salt has raised high government and social concerns. The waste salt as a byproduct of the pesticide is the largest solid waste in the pesticide industry, contains various toxic and harmful substances and has complex components. Meanwhile, the water content is high, the caking is easy, and the effective treatment and utilization are difficult to obtain. In the prior art, in the aspect of byproduct salt treatment, a common technology is an incineration technology, namely, under a high-temperature condition, organic matters in byproduct salt are decomposed, gasified and oxidized, and finally serious toxic and harmful substances are removed under the high-temperature condition. The method is an effective and feasible technology for treating byproduct salt, and the existing treatment method in the market adopts high-temperature treatment technologies such as an incinerator, a rotary kiln and the like. The goal of recycling is not achieved.
The salt is an important chemical raw material and is an extremely precious national strategic resource, and the recycling of the waste salt as the industrial raw material can not only eliminate the pollution to the environment, but also make full use of the precious salt resource to recycle the byproduct and realize the circular economy.
Saturated saline water is used as a common medicament in industrial production, and the conventional preparation method basically comprises the steps of adding excessive salt into pure water and stirring the solution to obtain clear liquid, namely the saturated saline water. This formulation method is intermittent and the amount of salt added is not well defined, resulting in waste and failing to meet the requirements of a continuously operated apparatus. In addition, in the existing hazardous waste treatment field, a method which can continuously recycle the used detergent and can continuously prepare the detergent is not available.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses that saturated brine used in the process of a hazardous waste salt refining process can be continuously circulated and regenerated when the process is used as a detergent, and the preparation flow of the saturated brine is continuous, so that the continuous operation of the whole flow can be ensured while the waste of excessive salt is not caused, and the invention has strong practical value.
The invention is realized by the following steps:
a continuous preparation process of saturated brine is characterized by comprising the following steps:
step one, preparing saturated brine in a pure brine preparation device, wherein the saturated brine is saturated brine for correspondingly treating dangerous waste salt and is used as a detergent;
step two, taking the saturated salt water in the step one as a washing liquid of the dangerous waste salt, feeding the washing liquid into a third-stage washing kettle for third-stage washing, centrifuging to obtain third-stage centrifugal mother liquid, and recycling the third-stage centrifugal mother liquid into a second-stage washing kettle for second-stage washing; centrifuging to obtain a secondary centrifugal mother liquor, then feeding the secondary centrifugal mother liquor into a primary washing kettle to carry out primary washing, centrifuging to obtain a primary centrifugal mother liquor, carrying out oxidation, evaporation and crystallization on the primary centrifugal mother liquor, separating salt water through an evaporation function, feeding condensed water into a pure salt water preparation device in the step one, and feeding the mother liquor into a subsequent device such as a thickener separator; the adding proportion range of the saturated saline as the washing liquid is as follows: the amount of the saturated salt water added into 1 ton of dangerous waste salt is 0-3 m3；
And step three, after the saturated brine is used as a washing solution and subjected to three-stage washing in the step two, the washed salt enters a thermal desorption dryer, 10% -90% of salt produced by the thermal desorption dryer is separated and circularly enters the purified brine preparation device in the step one, the salt is mixed with condensed water, and then water is added into the purified brine preparation device to 100%, so that the same amount of saturated brine can be prepared. The washing mode disclosed by the invention is countercurrent washing, namely, the washing mode comprises the steps of preparing purified brine, carrying out tertiary washing, carrying out secondary washing, carrying out primary washing and carrying out regeneration and recycling, so that the continuous operation of the whole process can be realized, and the waste of salt is not caused. The proportion of salt discharged from the thermal desorption dryer and entering the circulation is the same as the proportion of saturated brine prepared at the first time, namely the saturated solubility of the salt under the working condition.
Further, preferably, the amount of the saturated saline water added into 1 ton of dangerous waste salt is 1m3。
Further, according to actual requirements, circularly repeating the steps of three-stage washing until the pollutant concentration of the original salt is reached and the standard limit is reached; the saturated brine is circulated as a detergent in a three-stage washing system.
Further, the saturated brine is regenerated by a thermal desorption dryer after being used as a detergent in a three-stage washing system.
Furthermore, a two-in-one washing and filtering device is arranged in front of the three-level washing system; the saturated saline water is used as a washing agent in the three-stage washing system, circulation and regeneration are carried out, the washed pollutants are accumulated in the evaporation mother liquor, and the pollutants are removed by refluxing to the two-in-one washing and filtering device.
Further, the treated hazardous waste salt is ammonium chloride salt, and the corresponding detergent is saturated ammonium chloride brine; the dangerous waste salt of processing be ammonium sulfate salt, corresponding the detergent be saturated ammonium sulfate salt solution. The continuous preparation process of the invention aims at the dangerous waste salt which is not limited to ammonium chloride salt and ammonium sulfate salt, and is also applicable to other similar dangerous waste salts.
Compared with the prior art, the invention has the beneficial effects that:
1) the preparation process of the saturated brine is continuous, so that the continuous operation of the whole process can be ensured while the waste of excessive salt is not caused;
2) saturated brine is used as a detergent in the process, takes away pollutants in waste salt, accumulates the pollutants in evaporation mother liquor through oxidation, evaporation and crystallization, and is removed through a two-in-one washing and filtering device. The saturated brine can be continuously circulated and regenerated, and ideally, no loss is caused;
3) the saturated saline water does not produce secondary pollution in the circulating and regenerating processes, and is a green and environment-friendly medicament;
4) the preparation process of the saturated brine has strong practicability and innovativeness, solves the practical problems in production and operation, and has wide application prospect.
Drawings
FIG. 1 is a flow diagram of a continuous saturated brine production process of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Taking ammonium chloride as an example, the preparation method comprises the following steps:
(1) the preparation of saturated ammonium chloride brine was carried out in a clean brine preparation apparatus at 0.33m3Saturated saline water is taken as an example, the first preparation is carried out, and 0.33m is added into the device3100kg of ammonium chloride salt was added to the purified water, and the mixture was stirred and dissolved to obtain saturated brine. If the salt is other salt, the preparation is carried out according to the solubility at normal temperature, and the principle is the same as that of ammonium chloride brine.
(2) As shown in fig. 1, saturated brine is used as a washing solution, enters a third-stage washing kettle for third-stage washing, is centrifuged to obtain a third-stage centrifugal mother solution, then enters a second-stage washing kettle for second-stage washing, is centrifuged to obtain a second-stage centrifugal mother solution, then enters a first-stage washing kettle for first-stage washing, is centrifuged to obtain a first-stage centrifugal mother solution, the first-stage centrifugal mother solution passes through an oxidation evaporation crystallization device, condensed water enters a pure brine preparation device, and the mother solution enters a subsequent device.
(3) 1 ton of ammonium chloride salt produced by the thermal desorption dryer is separated out, 100kg of ammonium chloride salt enters a pure brine configuration device and is mixed with condensed water, wherein the lost water is mainly a small amount of water taken away by mother liquor, and the same amount of saturated ammonium chloride brine can be prepared by adding the lost water into the pure brine configuration device. The product salt is prepared until the purified salt accounts for about 10 percent
(4) And (4) taking the saturated saline water prepared in the step (3) as a detergent in the system, continuously circulating and regenerating, accumulating the washed pollutants in the evaporation mother liquor, and removing the pollutants through a two-in-one washing and filtering device without generating secondary pollution.
Example 2
Taking ammonium chloride waste salt containing glufosinate-ammonium of a certain chemical plant as an example, a continuous preparation process of saturated brine is applied to an intelligent cleaning system, and the specific treatment steps are as follows:
the ammonium chloride dangerous waste salt firstly enters a self-built two-in-one washing and filtering device in a workshop, and the filtered ammonium chloride flows into a first-stage multifunctional washing kettle after being dried by a vacuum rake dryer. Wherein the hazardous waste salt comprises low boiling point salts such as ammonium chloride and ammonium sulfate containing organic pollutants; the washing solution comprises common organic solvents such as methanol, ethanol and the like. The washed methanol or ethanol and other common organic solvents are sent to a workshop for rectification and then recycled;
the material after two-in-one washing enters a first-stage multifunctional washing kettle, and simultaneously, a second-stage centrifugal liquid is added for washing, the washed material flows into a first-stage centrifugal machine for solid-liquid separation, the solid flows into a second-stage washing kettle, and the liquid flows into a first-stage mother liquid evaporation storage tank. The mother liquor collected by the mother liquor tank is pumped to MVR evaporative crystallization for evaporative crystallization, and the generated solid salt and the centrifugate enter a two-in-one washing and filtering device for internal circulation;
the solid of the first-stage centrifugation flows into a second-stage washing kettle, and meanwhile, a third-stage centrifugate is added for washing, after washing, the solid is lifted to a second-stage centrifuge by a pump for solid-liquid separation, the solid flows into the third-stage washing kettle, and the liquid flows into the first-stage washing kettle;
the solid of the second-stage centrifugation flows into a third-stage washing kettle, and simultaneously saturated brine in a pure brine configuration device is addedAnd (4) washing, lifting the washed liquid to a three-stage centrifuge through a pump for solid-liquid separation, enabling the solid to flow into a thermal desorption dryer and enabling the liquid to flow into a second-stage washing kettle. And drying the solid to obtain a product, and packaging the product with salt for sale. The saturated saline water is determined according to the treated dangerous waste salt, and saturated ammonium chloride salt is prepared by treating the ammonium chloride waste salt in the embodiment. The adding proportion range of saturated brine is as follows: the amount of saturated salt water required to be added into 1 ton of waste salt is 0-3 m3Preferably, the amount of saturated brine added per ton of salt is 1m3。
And the condensed water generated by evaporation flows into a condensed water collecting tank and is lifted to a pure brine configuration device by a pump, and the pure brine configuration device is configured with part of dried product salt. And pumping the mixture to a three-stage washing kettle after configuration. Wherein 1m of saturated saline water is added into each ton of salt3The product salt is prepared to the pure water salt accounting for about 30 percent, namely, one ton of waste salt is treated to obtain 700kg of product salt.
The washing principle is as follows: the method mainly aims at the low-boiling-point waste salt which does not contain heavy metal and mainly contains organic pollutants and characteristic pollution factors. In the embodiment, most organic pollutants in the waste salt are removed by the organic solvent, and when 1 ton of salt is added into 1m of saturated saline water3After the primary washing centrifugation, the water content of the waste salt is about 5%, the content of organic pollutants is reduced to 1/100-1/20 of the original salt, and after the secondary washing centrifugation, the content of the organic pollutants is reduced to 1/10000-1/400 of the original salt, and the secondary washing can be carried out according to specific actual requirements; and by analogy, the washing times can be determined according to the adding amount of the saturated saline water when the pollutant concentration of the raw salt and the standard reaching limit value are known.
Example 3
The preparation of saturated ammonium sulfate brine was carried out in a clean brine preparation apparatus at 1m3Saturated saline water is taken as an example, the first preparation is carried out, and 1m of saturated saline water is added into the device3750kg of ammonium sulfate salt was added to the purified water, and the mixture was stirred and dissolved to obtain saturated brine.
Taking ammonium sulfate as an example, the preparation method comprises the following steps:
(1) the saturated ammonium sulfate brine was prepared in a clean brine preparation apparatus at 1.2m3Saturated saline water is taken as an example and prepared for the first timeAdding 1.2m to the device3900kg of ammonium sulfate salt was added to the purified water, and the mixture was stirred and dissolved to obtain saturated brine.
(2) Saturated saline water is used as washing liquid, the washing liquid enters a third-level washing kettle to be subjected to third-level washing, third-level centrifugal mother liquid is obtained through centrifugation, the washing liquid enters a second-level washing kettle to be subjected to second-level washing, second-level centrifugal mother liquid is obtained through centrifugation, the washing liquid enters a first-level washing kettle to be subjected to first-level washing, first-level centrifugal mother liquid is obtained through centrifugation, the first-level centrifugal mother liquid passes through an oxidation evaporation crystallization device, condensed water enters a pure saline water preparation device, and the mother.
(3) 1 ton of ammonium chloride salt produced by the thermal desorption dryer is separated out, 900kg of ammonium chloride salt enters a pure brine preparation device and is mixed with condensed water, wherein the lost water is mainly a small amount of water taken away by mother liquor, and the same amount of saturated ammonium sulfate brine can be prepared by adding the lost water into the pure brine preparation device. The product salt is prepared to about 90 percent of the pure salt.
(4) And (4) taking the saturated saline water prepared in the step (3) as a detergent in the system, continuously circulating and regenerating, accumulating the washed pollutants in the evaporation mother liquor, and removing the pollutants through a two-in-one washing and filtering device without generating secondary pollution.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. A continuous preparation process of saturated brine is characterized by comprising the following steps:
step one, preparing saturated brine in a pure brine preparation device, wherein the saturated brine is saturated brine for correspondingly treating dangerous waste salt and is used as a detergent;
step two, taking the saturated salt water in the step one as a washing liquid of the dangerous waste salt, feeding the washing liquid into a third-stage washing kettle for third-stage washing, centrifuging to obtain third-stage centrifugal mother liquid, and recycling the third-stage centrifugal mother liquid into a second-stage washing kettle for second-stage washing; centrifuging to obtain second-stage centrifugal mother liquor, and feeding into first-stageCarrying out primary washing in a washing kettle, centrifuging to obtain primary centrifugal mother liquor, carrying out oxidation, evaporation and crystallization on the primary centrifugal mother liquor, feeding condensed water into a pure brine preparation device in the step I, and feeding the mother liquor into a thickener separator; the adding proportion range of the saturated saline as the washing liquid is as follows: the amount of the saturated salt water added into 1 ton of dangerous waste salt is 0-3 m3；
And step three, taking saturated brine as a washing solution, washing by the third stage of the step two, feeding the washing solution into a thermal desorption dryer, feeding the washed salt into the thermal desorption dryer, separating 10-90% of the salt produced by the thermal desorption dryer, circularly feeding the salt into the pure brine preparation device in the step one, mixing the salt with condensed water, and adding water into the pure brine preparation device to 100% to prepare the saturated brine with the same amount.
2. The continuous saturated brine preparation process according to claim 1, wherein the amount of saturated brine added to 1 ton of dangerous waste salt is 1m3。
3. The continuous saturated brine preparation process as claimed in claim 1, wherein the three washing steps are cyclically repeated according to actual needs until the contaminant concentration of the original salt and the standard limit are reached; the saturated brine is circulated as a detergent in a three-stage washing system.
4. A process according to claim 3, characterized in that said saturated brine is regenerated by means of a thermal desorption dryer after being used as a washing agent in a three-stage washing system.
5. The continuous saturated brine preparation process according to claim 4, wherein a two-in-one washing and filtering device is arranged in front of the three-stage washing system; the saturated saline water is used as a washing agent in the three-stage washing system, circulation and regeneration are carried out, the washed pollutants are accumulated in the evaporation mother liquor, and the pollutants are removed by refluxing to the two-in-one washing and filtering device.
6. The continuous preparation process of saturated brine according to any one of claims 1 to 5, wherein the treated hazardous waste salt is ammonium chloride salt, and the corresponding detergent is saturated ammonium chloride brine.
7. The continuous preparation process of saturated brine according to any one of claims 1 to 5, wherein the treated hazardous waste salt is ammonium sulfate salt, and the corresponding detergent is saturated ammonium sulfate brine.
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| CN201910822280.7A CN110586615A (en) | 2019-09-02 | 2019-09-02 | Continuous preparation process of saturated brine |
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| CN201910822280.7A CN110586615A (en) | 2019-09-02 | 2019-09-02 | Continuous preparation process of saturated brine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190697A (en) * | 2014-09-19 | 2014-12-10 | 山东腾跃化学危险废物研究处理有限公司 | Resourceful treatment method for hazardous wastes containing water soluble salts and organic matters |
| CN107803395A (en) * | 2017-12-11 | 2018-03-16 | 广州叶林环保科技有限公司 | A kind of organic abraum salt low-temperature carbonization handling process |
| CN109570194A (en) * | 2018-11-23 | 2019-04-05 | 华南理工大学 | A kind of full recycling processing method of sodium sulfate salt slag |
| CN109911918A (en) * | 2019-05-07 | 2019-06-21 | 江苏迈克化工机械有限公司 | The resource utilization method of industrial mixed salt containing organic solvent |
-
2019
- 2019-09-02 CN CN201910822280.7A patent/CN110586615A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190697A (en) * | 2014-09-19 | 2014-12-10 | 山东腾跃化学危险废物研究处理有限公司 | Resourceful treatment method for hazardous wastes containing water soluble salts and organic matters |
| CN107803395A (en) * | 2017-12-11 | 2018-03-16 | 广州叶林环保科技有限公司 | A kind of organic abraum salt low-temperature carbonization handling process |
| CN109570194A (en) * | 2018-11-23 | 2019-04-05 | 华南理工大学 | A kind of full recycling processing method of sodium sulfate salt slag |
| CN109911918A (en) * | 2019-05-07 | 2019-06-21 | 江苏迈克化工机械有限公司 | The resource utilization method of industrial mixed salt containing organic solvent |
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Application publication date: 20191220 Assignee: Yancheng Guotou Environmental Technology Co.,Ltd. Assignor: NANJING GREEN-WATER ENVIRONMENT ENGINEERING LIMITED BY SHARE Ltd. Contract record no.: X2021980001429 Denomination of invention: A continuous preparation process of saturated brine License type: Exclusive License Record date: 20210304 |
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