CN109133127A - A kind for the treatment of process of ammonia process of desulfurization waste liquid - Google Patents
A kind for the treatment of process of ammonia process of desulfurization waste liquid Download PDFInfo
- Publication number
- CN109133127A CN109133127A CN201710460038.0A CN201710460038A CN109133127A CN 109133127 A CN109133127 A CN 109133127A CN 201710460038 A CN201710460038 A CN 201710460038A CN 109133127 A CN109133127 A CN 109133127A
- Authority
- CN
- China
- Prior art keywords
- added
- specific gravity
- desulfurization waste
- magnesium sulfate
- ammonium
- 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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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
Abstract
The invention discloses a kind for the treatment of process of ammonia process of desulfurization waste liquid, including prepares Adlerika, desulfurization waste liquor processing and precipitate crystal ammonium magnesium sulfate；The present invention has the advantages that solving energy consumption problem, by the way that Adlerika is added, it is not required to be concentrated, directly precipitation ammonium magnesium sulfate crystal, has saved the energy, reduced production cost, increased economic benefit.
Description
Technical field
The present invention relates to a kind for the treatment of process of waste liquid, specifically a kind for the treatment of process of ammonia process of desulfurization waste liquid belongs to
In the treatment process field of waste liquid.
Background technique
Since flue gas ammonia method desulfurizing is high-efficient, desulfurization degree reaches 95-99%, and does not generate waste water and waste residue, coal-fired firepower
Power plant select ammonia-process desulfurization technique using in rising trend.The main liquid containing ammonium sulfate of waste liquid after desulfurization, extracts ammonium sulfate
Method is usually that crystallization, dehydration after solution evaporation and concentration are formed solid-state ammonium sulfate product.1 ton of waste liquid of every concentration need to consume steaming
0.5 ton of vapour or more, electric 5kw or more.To make desulfurization waste liquor form ammonia sulfate crystal by crystallization after being concentrated by evaporation moisture, waste
A large amount of steam and electric energy.
Summary of the invention
To solve the above-mentioned problems, the present invention devises a kind for the treatment of process of ammonia process of desulfurization waste liquid, solves energy consumption and asks
Topic is not required to be concentrated, directly precipitation ammonium magnesium sulfate crystal, has saved the energy, reduced and be produced by the way that Adlerika is added
This, increases economic benefit.
The technical solution of the present invention is as follows:
A kind for the treatment of process of ammonia process of desulfurization waste liquid, comprising the following steps:
(1) Adlerika of specific gravity >=1.20 is prepared using Waste Sulfuric Acid；
Method particularly includes: a certain amount of water is added in stainless steel cauldron, magnesia is added under stirring, then starts to add
Enter the Waste Sulfuric Acid of mass fraction 75-80%, pH=5-6 is filtered to remove impurity, be made specific gravity (reaction generate ammonium sulfate with
The specific gravity of water) >=1.20 Adlerika；
(2) desulfurization waste liquor is handled: waste liquid specific gravity is added ammonium hydroxide and sulfuric acid reaction, makes its pH=5-7, obtained sulfuric acid less than 1.25
Specific gravity >=1.25 of ammonium salt solution and water；
(3) specific gravity for obtaining the desulfurization waste liquor for specific gravity >=1.25 that step (2) obtains with step (1) >=1.20 magnesium sulfate are molten
Liquid, 1-1.5:1 is added in the rustless steel container with stirring by volume, precipitates crystal ammonium magnesium sulfate；It is carried out by centrifuge
It is separated by solid-liquid separation, then drying and processing obtains ammonium magnesium sulfate H20MgN2O14S2, ammonium sulfate eduction rate is greater than 90%.
The present invention has the advantages that
(1) desulfurization waste liquor is not required to evaporate, and directly reacts with Adlerika and crystalline solid is precipitated, saved energy consumption, at low cost；
(2) evaporation concentration equipment is not needed, equipment investment is saved；
(3) mother liquor after precipitating crystal is in magnesium sulfate production, no waste water to be generated；
(4) obtaining ammonium magnesium sulfate is the fertilizer of a kind of sulfur-bearing, magnesium, ammonium element for agricultural.
The present invention is further explained in the light of specific embodiments.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
The percentage sign " % " being related in the present invention refers to mass percent if not specified；But the percentage of solution,
Unless otherwise specified, refer to and contain several grams of solute in solution 100ml；Percentage between liquid, capacity when referring to 20 DEG C
Ratio.
Example 1
A kind for the treatment of process of ammonia process of desulfurization waste liquid, comprising the following steps:
(1) prepared by Adlerika: a certain amount of water being added in stainless steel cauldron, magnesia is added under stirring, so
It is initially added into the Waste Sulfuric Acid of 75-80% afterwards, pH=5-6 is filtered to remove impurity, and the Adlerika of specific gravity >=1.20 is made；
(2) desulfurization waste liquor is added in Adlerika, 1:1 is added by volume, stirs 0.5-1 hours；Ammonium magnesium sulfate is precipitated
Crystal；Ammonium sulfate eduction rate is greater than 90%；
(3) the ammonium magnesium sulfate crystal of precipitation is separated by solid-liquid separation by centrifuge, then dries to obtain ammonium magnesium sulfate product；The production
Product nitrogen content 8.2%, content of magnesium 5.1%, sulfur content 15.3%；
(4) mother liquor after separation is used for Adlerika preparation.
Example 2
A kind for the treatment of process of ammonia process of desulfurization waste liquid, comprising the following steps:
(1) prepared by Adlerika: mother liquor being added in stainless steel cauldron, magnesia is added under stirring, then starts
The Waste Sulfuric Acid of 75-80% is added, pH=5-6 is filtered to remove impurity, and the Adlerika of specific gravity >=1.20 is made；
(2) desulfurization waste liquor is added in Adlerika, 1:3 is added by volume, stirs 0.5-1 hours；Ammonium magnesium sulfate is precipitated
Crystal；Ammonium sulfate eduction rate is greater than 90%；
(3) the ammonium magnesium sulfate crystal of precipitation is separated by solid-liquid separation by centrifuge, then dries to obtain ammonium magnesium sulfate product；The production
Product nitrogen content 8.4%, content of magnesium 5.2%, sulfur content 15.3%；
(4) mother liquor after separation is used for Adlerika preparation.
Example 3
A kind for the treatment of process of ammonia process of desulfurization waste liquid, comprising the following steps:
(1) prepared by Adlerika: mother liquor being added in stainless steel cauldron, magnesia is added under stirring, then starts
The Waste Sulfuric Acid of 75-80% is added, pH=5-6 is filtered to remove impurity, and the Adlerika of specific gravity >=1.20 is made；
(2) desulfurization waste liquor is added in Adlerika, 1:5 is added by volume, stirs 0.5-1 hours；Ammonium magnesium sulfate is precipitated
Crystal；Ammonium sulfate eduction rate is greater than 90%；
(3) the ammonium magnesium sulfate crystal of precipitation is separated by solid-liquid separation by centrifuge, then dries to obtain ammonium magnesium sulfate product；The production
Product nitrogen content 8.4%, content of magnesium 5.3%, sulfur content 15.2%；
(4) mother liquor after separation is used for Adlerika preparation.
Raw materials used in the present invention is to commonly use raw material in the production of this field, can be obtained from market, and for production
As a result it will not have an impact；Various equipment employed in the present invention are conventional equipment used in the production technology of this field,
And operation, the parameter etc. of each equipment are carried out according to routine operation, have no special feature.
Claims (2)
1. a kind for the treatment of process of ammonia process of desulfurization waste liquid, it is characterised in that: the following steps are included:
(1) Adlerika of specific gravity >=1.20 is prepared using Waste Sulfuric Acid；
(2) desulfurization waste liquor is handled: waste liquid specific gravity is added ammonium hydroxide and sulfuric acid reaction, makes its pH=5-7, obtained sulfuric acid less than 1.25
Specific gravity >=1.25 of ammonium salt solution and water；
(3) specific gravity for obtaining the desulfurization waste liquor for specific gravity >=1.25 that step (2) obtains with step (1) >=1.20 magnesium sulfate are molten
Liquid, 1-1.5:1 is added in the rustless steel container with stirring by volume, precipitates crystal ammonium magnesium sulfate；It is carried out by centrifuge
It is separated by solid-liquid separation, then drying and processing obtains ammonium magnesium sulfate H20MgN2O14S2, ammonium sulfate eduction rate is greater than 90%.
2. a kind for the treatment of process of ammonia process of desulfurization waste liquid according to claim 1, it is characterised in that: the step (1)
Method particularly includes: a certain amount of water is added in stainless steel cauldron, magnesia is added under stirring, is then initially added into matter
The Waste Sulfuric Acid of score 75-80% is measured, pH=5-6 is filtered to remove impurity, and the Adlerika of specific gravity >=1.20 is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460038.0A CN109133127A (en) | 2017-06-17 | 2017-06-17 | A kind for the treatment of process of ammonia process of desulfurization waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460038.0A CN109133127A (en) | 2017-06-17 | 2017-06-17 | A kind for the treatment of process of ammonia process of desulfurization waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109133127A true CN109133127A (en) | 2019-01-04 |
Family
ID=64830790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710460038.0A Pending CN109133127A (en) | 2017-06-17 | 2017-06-17 | A kind for the treatment of process of ammonia process of desulfurization waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109133127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174174A (en) * | 2020-09-18 | 2021-01-05 | 东江环保股份有限公司 | Method for preparing magnesium ammonium sulfate hexahydrate by recycling copper-containing electroplating wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554595A (en) * | 2003-12-30 | 2004-12-15 | 尹德文 | Method for treating magnesium sulfate mather slution after producing boric acid by sulfuric acid method |
| CN103588229A (en) * | 2012-08-18 | 2014-02-19 | 刘念亭 | Production method for magnesium sulfate by using purple waste acid solution obtained in production of anthraquinone |
-
2017
- 2017-06-17 CN CN201710460038.0A patent/CN109133127A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554595A (en) * | 2003-12-30 | 2004-12-15 | 尹德文 | Method for treating magnesium sulfate mather slution after producing boric acid by sulfuric acid method |
| CN103588229A (en) * | 2012-08-18 | 2014-02-19 | 刘念亭 | Production method for magnesium sulfate by using purple waste acid solution obtained in production of anthraquinone |
Non-Patent Citations (1)
| Title |
|---|
| 赵毅等: "《有害气体控制工程》", 31 August 2001 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174174A (en) * | 2020-09-18 | 2021-01-05 | 东江环保股份有限公司 | Method for preparing magnesium ammonium sulfate hexahydrate by recycling copper-containing electroplating wastewater |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |