CN103570045A - Method for processing mixture of sodium sulfate and ammonium sulfate by using sodium chloride - Google Patents
Method for processing mixture of sodium sulfate and ammonium sulfate by using sodium chloride Download PDFInfo
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- CN103570045A CN103570045A CN201310501300.3A CN201310501300A CN103570045A CN 103570045 A CN103570045 A CN 103570045A CN 201310501300 A CN201310501300 A CN 201310501300A CN 103570045 A CN103570045 A CN 103570045A
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- sodium
- sulfate
- ammonium
- ammonium sulfate
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Abstract
The invention provides a method for processing a mixture of sodium sulfate and ammonium sulfate by using sodium chloride. The method has the characteristics of mixing sodium chloride with mixed waste objects, then heating directly, removing ammonium ions in the mixture, and obtaining byproduct ammonium chloride. The method has the advantages of low investment, simple processes, relatively low energy consumption, high yield, and large profit margin, and is normally applicable to industrial processing of the mixture of sodium sulfate and ammonium sulfate.
Description
Technical field
The present invention relates to a kind of method of effective low-cost processes sodium sulfate and ammonium sulfate mixture.
Background technology
In industrial production, such as in petroleum refining catalytic process, produce a large amount of waste water, the sodium sulfate that waste water contains higher concentration, ammonium sulfate and on a small quantity other impurity.If this waste water does not add and processes direct discharge and can not cause serious water pollution, affect crop growth and the people's life, and the sodium sulfate in waste water and ammonium sulfate are utilizable useful resources.The method of processing at present such refuse is mainly fractional crystallisation method and adds alkali blow-off method.Fractional crystallisation method wherein, be limited to the binary phase diagram of ammonium sulfate sodium sulfate complexity cannot be thoroughly separated the two.And add sodium hydroxide and the sulfuric acid that alkali blow-off method needs people to measure, on cost, cannot pass through.Therefore, current low-cost convenient disposal sodium sulfate and ammonium sulfate mixture become a difficult problem of many enterprises.
Summary of the invention
The object of the invention is to address the above problem, a kind of method of easy low-cost processes sodium sulfate and ammonium sulfate mixture is provided.
To achieve these goals, the invention provides a kind of method of processing sodium sulfate and ammonium sulfate mixture with sodium-chlor, the method comprises:
Roasting certain hour at a certain temperature after sodium-chlor is mixed with sodium sulfate ammonium sulfate, makes ammonium sulfate react with sodium-chlor and generates ammonium chloride volatilization, and by the cooling collection of volatile matter, tail gas passes in water.
According to the present invention, with sodium-chlor, process the method for sodium sulfate ammonium sulfate mixture, can not only reduce processing cost, and can create huge profit, and not to environmental emission waste residue waste gas, be a kind for the treatment of process of green.
Embodiment
The present invention processes the method for sodium sulfate and ammonium sulfate mixture with sodium-chlor, it comprises:
Roasting certain hour at a certain temperature after sodium-chlor is mixed with sodium sulfate ammonium sulfate, makes ammonium sulfate react with sodium-chlor and generates ammonium chloride volatilization, and by the cooling collection of volatile matter, tail gas passes in water.
Below in conjunction with specific examples, the present invention is described in detail.
Example 1
Evaporate to dryness after waste liquid enriched material is mixed with appropriate sodium-chlor, and be heated to 350 ℃, be incubated 2 hours,, till the ammonium chloride that makes ammonium sulfate react generation with sodium-chlor volatilizees completely.Meanwhile, the ammonium chloride gas of volatilization is again cooled to collect and obtains high purity chlorination ammonium solid, and tail gas passes in water, is aqueous ammonium chloride solution.Volatilization is not the sodium sulfate of higher degree, and wherein N content is 0.0001%.
Example 2
Evaporate to dryness after waste liquid enriched material is mixed with appropriate sodium-chlor, and be heated to 400 ℃, be incubated 1.5 hours,, till the ammonium chloride that makes ammonium sulfate react generation with sodium-chlor volatilizees completely.Meanwhile, the ammonium chloride gas of volatilization is again cooled to collect and obtains high purity chlorination ammonium solid, and tail gas passes in water, is aqueous ammonium chloride solution.Volatilization is not the sodium sulfate of higher degree, and wherein N content is 0.0001%.
Example 3
Evaporate to dryness after waste liquid enriched material is mixed with appropriate sodium-chlor, and be heated to 500 ℃, be incubated 0.5 hour,, till the ammonium chloride that makes ammonium sulfate react generation with sodium-chlor volatilizees completely.Meanwhile, the ammonium chloride gas of volatilization is again cooled to collect and obtains high purity chlorination ammonium solid, and tail gas passes in water, is aqueous ammonium chloride solution.Volatilization is not the sodium sulfate of higher degree, and wherein N content is 0.0001%.
Example 4
Evaporate to dryness after waste liquid enriched material is mixed with appropriate sodium-chlor, and be heated to 300 ℃, be incubated 4 hours,, till the ammonium chloride that makes ammonium sulfate react generation with sodium-chlor volatilizees completely.Meanwhile, the ammonium chloride gas of volatilization is again cooled to collect and obtains high purity chlorination ammonium solid, and tail gas passes in water, is aqueous ammonium chloride solution.Volatilization is not the sodium sulfate of higher degree, and wherein N content is 0.01%.
Claims (6)
1. with sodium-chlor, process a method for sodium sulfate and ammonium sulfate mixture, the method is
Roasting certain hour at a certain temperature after sodium-chlor is mixed with sodium sulfate ammonium sulfate, makes ammonium sulfate react with sodium-chlor and generates ammonium chloride volatilization, and by the cooling collection of volatile matter, tail gas passes in water.
2. method according to claim 1, is characterized in that: first sodium-chlor is directly evenly mixed with ammonium sulfate sodium sulfate mixture, hybrid mode is that solution mixes or solids mixing.
3. the method for processing sodium sulfate according to claim 1 and ammonium sulfate mixed sludge, is characterized in that the ammonium sulfate mole mixture ratio example in chlorination and in waste residue is NaCl:(NH
1)
2sO
1=2:1.
4. method according to claim 1, is characterized in that: maturing temperature is at 100 ℃-500 ℃
5. method according to claim 1, is characterized in that roasting time is for more than at least 0.5 hour.
6. method according to claim 1, is characterized in that the volatile gases producing is ammonium chloride and is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310501300.3A CN103570045A (en) | 2013-10-23 | 2013-10-23 | Method for processing mixture of sodium sulfate and ammonium sulfate by using sodium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310501300.3A CN103570045A (en) | 2013-10-23 | 2013-10-23 | Method for processing mixture of sodium sulfate and ammonium sulfate by using sodium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103570045A true CN103570045A (en) | 2014-02-12 |
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ID=50042853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310501300.3A Pending CN103570045A (en) | 2013-10-23 | 2013-10-23 | Method for processing mixture of sodium sulfate and ammonium sulfate by using sodium chloride |
Country Status (1)
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| CN (1) | CN103570045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380306A (en) * | 2022-02-17 | 2022-04-22 | 常州大学 | Method for continuously producing sodium sulfate and ammonium chloride by using microreactor |
-
2013
- 2013-10-23 CN CN201310501300.3A patent/CN103570045A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380306A (en) * | 2022-02-17 | 2022-04-22 | 常州大学 | Method for continuously producing sodium sulfate and ammonium chloride by using microreactor |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140212 |