CN109607570A - A kind of recycling treatment process of ammonium chloride abraum salt - Google Patents
A kind of recycling treatment process of ammonium chloride abraum salt Download PDFInfo
- Publication number
- CN109607570A CN109607570A CN201811648248.3A CN201811648248A CN109607570A CN 109607570 A CN109607570 A CN 109607570A CN 201811648248 A CN201811648248 A CN 201811648248A CN 109607570 A CN109607570 A CN 109607570A
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- ammonium chloride
- abraum salt
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- salt
- treatment process
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/022—Preparation of aqueous ammonia solutions, i.e. ammonia water
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to a kind of recycling treatment process of ammonium chloride abraum salt, the specific steps are as follows: ammonium chloride abraum salt is configured to 200-450g/L ammonium chloride solution；Excessive sodium hydroxide is added, reaction is sufficiently stirred, evaporation mentions ammonia, and control pH value of solution is 12.5 or more during mentioning ammonia；It hydrochloric acid is added in the mother liquor after ammonia is neutralized to mentioning；Solution is continued into evaporative crystallization, obtains sodium chloride abraum salt；Obtained sodium chloride abraum salt is refined, purification sodium chloride salt can be obtained, the present invention realizes the disposal of resources of ammonium chloride abraum salt, solves the disposal difficulties of ammonium chloride abraum salt, realizes recycling for resource.
Description
Technical field
The present invention relates to a kind of recycling treatment process of ammonium chloride abraum salt, belong to recycling treatment process field.
Background technique
Salt dangerous waste is to be put into a kind of hazardous waste, and such hazardous waste derives from chemical industry, medicine, pesticide, print extensively
The fields such as dye, yield is big, and cost of disposal is high, it has also become and the bottleneck of enterprise development, ammonium chloride abraum salt are one of dangerous waste salt,
Main component is chlorination ammonium salt and other organic matters.Ammonium chloride itself easily decomposes, therefore ammonium chloride abraum salt cannot directly carry out high temperature
How cracking, effectively handle such hazardous waste, have become very urgent.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of recycling treatment process of ammonium chloride abraum salt,
To solve problems of the prior art.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of recycling treatment process of ammonium chloride abraum salt, the specific steps are as follows:
(1) ammonium chloride abraum salt is configured to 200-450g/L ammonium chloride solution；
(2) excessive sodium hydroxide is added in step (1) solution, reaction is sufficiently stirred；
(3) solution evaporation mentions ammonia, controls pH value of solution 12.5 or more；
(4) it hydrochloric acid row is added in the mother liquor after ammonia neutralizes to mentioning；
(5) solution is continued into evaporative crystallization, obtains sodium chloride abraum salt；
(6) obtained sodium chloride abraum salt is refined, purification sodium chloride salt can be obtained.
As an improvement of the present invention, in the step (1), when raw material is ammonium chloride abraum salt solid, in ammonium chloride
When solution is configured, steps are as follows: ammonium chloride abraum salt solid is directly dissolved in water.
As an improvement of the present invention, the reaction temperature of the dissolution is 20-50 DEG C.
As an improvement of the present invention, in the step (1), when raw material is the highly concentrated organic liquid waste of containing ammonium chloride,
The configuration step of ammonium chloride solution is as follows: the highly concentrated organic liquid waste of containing ammonium chloride is evaporated concentration, evaporates a part of water,
The ammonium chloride solution of respective concentration can be obtained.
As an improvement of the present invention, the reaction temperature of the evaporation and concentration is 60-90 DEG C.
As an improvement of the present invention, the gas after evaporation in step (3) is condensed, concentrated ammonia liquor can be obtained.
As an improvement of the present invention, in the step (4), the pH of solution is 6.5-7 after neutralization.
As an improvement of the present invention, the step of sodium chloride abraum salt refines in the step (6) is as follows:
1) sodium chloride abraum salt Pintsch process: is subjected to Pintsch process at 200-550 DEG C；
2) dissolution filter: being dissolved in water for cracking salt, is configured to the solution of 200-300g/L, filtering removal insoluble matter；
3) catalysis oxidation cleans: oxidant being added into filtrate and is aoxidized, removes remaining organic matter in solution, obtains inorganic
Salting liquid；
4) secondary crystallization: inorganic salt solution is evaporated crystallization, obtains crystal；
5) thermal desorption: by obtained crystal in 160-200 DEG C of progress thermal desorption, further removal may adhere to plane of crystal
Organic matter obtains purification sodium chloride abraum salt.
As an improvement of the present invention, evaporative crystallization temperature is 60-120 DEG C in step 4).
As an improvement of the present invention, oxidant is hydrogen peroxide or ozone in the step 3).
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows:
(1) it the invention discloses a kind of recycling treatment process of ammonium chloride abraum salt, is replaced by using sodium hydroxide,
Concentrated ammonia liquor is recycled, ammonium chloride is converted to sodium chloride, carries out the purification of sodium chloride；The present invention converts labile chlorination ammonium salt
Dystectic sodium chloride salt is decomposed at hardly possible, the purification of salt is realized by cracking technology: ammonium chloride itself easily decomposes, can not be by splitting
The purification that technique realizes chlorination ammonium salt is solved, chlorination ammonium salt is converted to sodium chloride salt, it, can be with regard to can solve this problem
Quickly and effectively to the recycling treatment process of ammonium chloride abraum salt；
(2) present invention recycles concentrated ammonia liquor using highly basic displacement weak base: sodium hydroxide is added in solution, by stripping, just obtains dense ammonia
Water has certain economic value, reduces cost of disposal；
(3) present invention realizes the disposal of resources of ammonium chloride abraum salt, solves the disposal difficulties of ammonium chloride abraum salt, realizes money
Source recycles.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1:
Ammonium chloride abraum salt in this embodiment comes from certain insecticide factory, is faint yellow solid, and wherein ammonium chloride content is 92%,
Remaining is organic matter and moisture.
1 embodiment of table, 1 step and experiment effect detail
Ammonium chloride abraum salt content of organics is higher it can be seen from the data in table 1, obtains 26% after replacing by sodium hydroxide
Concentrated ammonia liquor, ammonium chloride is converted to sodium chloride, by being refined after a series of purified salt techniques such as sodium chloride salt Pintsch process
Salt, from experimental data, it can be seen that gained purified salt meets chlor-alkali industry salt standard.It is truly realized the resource of ammonium chloride abraum salt
Change and utilizes.
Embodiment 2:
Ammonium chloride exhausted liquid in this embodiment comes from certain insecticide factory, is weak yellow liquid, and wherein ammonium chloride content is 12%,
Remaining is organic matter and moisture.
2 embodiment of table, 2 step and experiment effect detail
Ammonium chloride exhausted liquid content of organics is higher it can be seen from the data in table 2, and ammonium chloride concentration 12% is dense through pervaporation
After contracting, ammonium chloride concentration is promoted, and reaches sub-saturated state, obtains 26% concentrated ammonia liquor, ammonium chloride conversion after sodium hydroxide displacement is added
At sodium chloride, by obtaining purified salt after a series of purified salt techniques such as sodium chloride salt Pintsch process, from experimental data, it can be seen that
Gained purified salt meets chlor-alkali industry salt standard.It is truly realized the resource utilization of ammonium chloride abraum salt.
Embodiment 3:
Ammonium chloride abraum salt in this embodiment comes from certain insecticide factory, is yellow-brown solid, and wherein ammonium chloride content is 85%,
Remaining is organic matter and moisture.
3 embodiment of table, 3 step and experiment effect detail
Ammonium chloride abraum salt content of organics is higher it can be seen from the data in table 3, obtains 26% after replacing by sodium hydroxide
Concentrated ammonia liquor, ammonium chloride is converted to sodium chloride, by being refined after a series of purified salt techniques such as sodium chloride salt Pintsch process
Salt, from experimental data, it can be seen that gained purified salt meets chlor-alkali industry salt standard.It is truly realized the resource of ammonium chloride abraum salt
Change and utilizes.
Above-described embodiment is only the preferred technical solution of the present invention, and is not construed as limitation of the invention, the present invention
Protection scope should with claim record technical solution, including claim record technical solution in technical characteristic etc.
It is protection scope with alternative, i.e., equivalent replacement within this range is improved, also within protection scope of the present invention.
Claims (10)
1. a kind of recycling treatment process of ammonium chloride abraum salt, which is characterized in that specific step is as follows:
(1) ammonium chloride abraum salt is configured to 200-450g/L ammonium chloride solution；
(2) excessive sodium hydroxide is added in step (1) solution, reaction is sufficiently stirred；
(3) solution evaporation mentions ammonia, controls pH value of solution 12.5 or more；
(4) it hydrochloric acid is added in the mother liquor after ammonia is neutralized to mentioning；
(5) solution is continued into evaporative crystallization, obtains sodium chloride abraum salt；
(6) obtained sodium chloride abraum salt is refined, purification sodium chloride salt can be obtained.
2. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 1, it is characterised in that: the step
(1) configuration step of ammonium chloride solution is as follows in: ammonium chloride abraum salt solid is directly dissolved in water.
3. according to a kind of recycling treatment process for ammonium chloride abraum salt that claim 2 is stated, it is characterised in that: the dissolution it is anti-
Answering temperature is 20-50 DEG C.
4. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 1, it is characterised in that: the step
(1) configuration step of ammonium chloride solution is as follows in: the highly concentrated organic liquid waste of containing ammonium chloride being evaporated concentration, phase can be obtained
Answer the ammonium chloride solution of concentration.
5. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 4, it is characterised in that: the evaporation is dense
The reaction temperature of contracting is 60-90 DEG C.
6. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 1, it is characterised in that: by step (3)
Gas after middle evaporation is condensed, and concentrated ammonia liquor can be obtained.
7. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 1, it is characterised in that: the step
(4) in, the pH of solution is 6.5-7 after neutralization.
8. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 1, it is characterised in that: the step
(6) the step of sodium chloride abraum salt refines in is as follows:
1) sodium chloride abraum salt Pintsch process: is subjected to Pintsch process at 200-550 DEG C；
2) dissolution filter: cracking salt is dissolved in water, the solution of 200-300g/L is configured to, filters；
3) catalysis oxidation cleans: oxidant being added into filtrate and is aoxidized and is cleaned, inorganic salt solution is obtained；
4) secondary crystallization: inorganic salt solution is evaporated crystallization, obtains crystal；
5) thermal desorption: by obtained crystal in 160-200 DEG C of progress thermal desorption, purification sodium chloride abraum salt is obtained.
9. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 8, it is characterised in that: steamed in step 4)
Sending out crystallization temperature is 60-120 DEG C.
10. a kind of recycling treatment process of ammonium chloride abraum salt according to claim 8, it is characterised in that: the step
3) oxidant is hydrogen peroxide or ozone in.
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| CN201811648248.3A CN109607570A (en) | 2018-12-30 | 2018-12-30 | A kind of recycling treatment process of ammonium chloride abraum salt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479734A (en) * | 2019-07-31 | 2019-11-22 | 同济大学 | A kind of method and device thereof using alkaline melt harmless treatment industrial waste salt |
| CN110627093A (en) * | 2019-09-02 | 2019-12-31 | 南京格洛特环境工程股份有限公司 | Recycling treatment process of sodium acetate waste salt in glufosinate-ammonium production |
| CN112723381A (en) * | 2019-10-14 | 2021-04-30 | 山东潍坊润丰化工股份有限公司 | Recycling method of ammonium chloride and sodium chloride mixed salt |
| CN114195668A (en) * | 2021-12-09 | 2022-03-18 | 宁夏彩妍科技有限公司 | Production method of p-aminobenzamide |
| CN114276265A (en) * | 2021-12-09 | 2022-04-05 | 宁夏彩妍科技有限公司 | Production method and production system of paranitrobenzamide |
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| SU1096908A1 (en) * | 1982-08-20 | 1989-05-15 | Предприятие П/Я А-1297 | Method of producing artificial carnallite |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479734A (en) * | 2019-07-31 | 2019-11-22 | 同济大学 | A kind of method and device thereof using alkaline melt harmless treatment industrial waste salt |
| CN110627093A (en) * | 2019-09-02 | 2019-12-31 | 南京格洛特环境工程股份有限公司 | Recycling treatment process of sodium acetate waste salt in glufosinate-ammonium production |
| CN112723381A (en) * | 2019-10-14 | 2021-04-30 | 山东潍坊润丰化工股份有限公司 | Recycling method of ammonium chloride and sodium chloride mixed salt |
| CN114195668A (en) * | 2021-12-09 | 2022-03-18 | 宁夏彩妍科技有限公司 | Production method of p-aminobenzamide |
| CN114276265A (en) * | 2021-12-09 | 2022-04-05 | 宁夏彩妍科技有限公司 | Production method and production system of paranitrobenzamide |
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