CN103508468A - Preparation method for ammonium sulfate - Google Patents
Preparation method for ammonium sulfate Download PDFInfo
- Publication number
- CN103508468A CN103508468A CN201210206811.8A CN201210206811A CN103508468A CN 103508468 A CN103508468 A CN 103508468A CN 201210206811 A CN201210206811 A CN 201210206811A CN 103508468 A CN103508468 A CN 103508468A
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- CN
- China
- Prior art keywords
- ammonium sulfate
- preparation
- hydrochloric acid
- acid pickling
- ferrous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a preparation method for ammonium sulfate. The method comprises the following steps: extracting ferrous ions in waste hydrochloric acid pickling liquid to prepare ferrous sulphate; then adding ammonia water into ferrous sulphate and carrying out oxidation and neutralization reactions; subjecting obtained ammonium sulfate including a small amount of ammonium chloride to crystallization; and carrying out drying to remove ammonium chloride so as to obtain ammonium sulfate. The method provided by the invention has the following advantages: comprehensive utilization of the waste hydrochloric acid pickling liquid is carried out to prepare ammonium sulfate, and the utilization rate of the waste hydrochloric acid pickling liquid is increased.
Description
Technical field
The present invention relates to a kind of preparation method of ammonium sulfate.
Background technology
The processing of hydrochloric acid pickling waste liquor, a lot of enterprises consider treatment cost of waste liquor and technical problem, therefore take direct discharge, and environment is caused to very large pollution.And in fact, the many compositions in hydrochloric acid pickling waste liquor can be reused.
Summary of the invention
Goal of the invention: for the problems referred to above, the object of this invention is to provide a kind of preparation method of ammonium sulfate, utilize hydrochloric acid pickling waste liquor for raw material, improve the utilization ratio of hydrochloric acid pickling waste liquor.
Technical scheme: a kind of preparation method of ammonium sulfate, the ferrous ion extracting in hydrochloric acid pickling waste liquor is prepared ferrous sulfate, in ferrous sulfate, add ammoniacal liquor to be oxidized and neutralization reaction again, by the ammonium sulfate crystallization that contains a small amount of ammonium chloride obtaining, drying is removed ammonium chloride and is obtained ammonium sulfate.
The mol ratio that ferrous ion reacts with ammoniacal liquor is 1: 5.
Drying temperature is 90 ℃.
Beneficial effect: compared with prior art, advantage of the present invention is that hydrochloric acid pickling waste liquor is fully utilized, and prepares ammonium sulfate, the utilization ratio of raising hydrochloric acid pickling waste liquor.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
A kind of preparation method of ammonium sulfate, the ferrous ion extracting in hydrochloric acid pickling waste liquor is prepared ferrous sulfate, in ferrous sulfate, add ammoniacal liquor to be oxidized and neutralization reaction again, by the ammonium sulfate crystallization that contains a small amount of ammonium chloride obtaining, drying is removed ammonium chloride and is obtained ammonium sulfate.
The mol ratio that ferrous ion reacts with ammoniacal liquor is 1: 5.
Drying temperature is 90 ℃.
Claims (3)
1. the preparation method of an ammonium sulfate, it is characterized in that: the ferrous ion extracting in hydrochloric acid pickling waste liquor is prepared ferrous sulfate, in ferrous sulfate, add ammoniacal liquor to be oxidized and neutralization reaction again, by the ammonium sulfate crystallization that contains a small amount of ammonium chloride obtaining, drying is removed ammonium chloride and is obtained ammonium sulfate.
2. the preparation method of a kind of ammonium sulfate according to claim 1, is characterized in that: the mol ratio that ferrous ion reacts with ammoniacal liquor is 1: 5.
3. the preparation method of a kind of ammonium sulfate according to claim 1, is characterized in that: drying temperature is 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206811.8A CN103508468A (en) | 2012-06-21 | 2012-06-21 | Preparation method for ammonium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206811.8A CN103508468A (en) | 2012-06-21 | 2012-06-21 | Preparation method for ammonium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103508468A true CN103508468A (en) | 2014-01-15 |
Family
ID=49891965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210206811.8A Withdrawn CN103508468A (en) | 2012-06-21 | 2012-06-21 | Preparation method for ammonium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103508468A (en) |
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2012
- 2012-06-21 CN CN201210206811.8A patent/CN103508468A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140115 |