CN106745064A - A kind of method that ammonium thiocyanate is removed in the crude salt from ammonium sulfate - Google Patents
A kind of method that ammonium thiocyanate is removed in the crude salt from ammonium sulfate Download PDFInfo
- Publication number
- CN106745064A CN106745064A CN201611046411.XA CN201611046411A CN106745064A CN 106745064 A CN106745064 A CN 106745064A CN 201611046411 A CN201611046411 A CN 201611046411A CN 106745064 A CN106745064 A CN 106745064A
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- China
- Prior art keywords
- ammonium
- ammonium sulfate
- crude salt
- liquid
- thiocyanate
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/20—Thiocyanic acid; Salts thereof
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A kind of method the invention discloses ammonium thiocyanate is removed in crude salt from ammonium sulfate, belongs to technical field of fine.The method dissolves the ammonium thiocyanate in ammonium sulfate crude salt with ammonium sulfate saturated solution, after centrifuge separates solid and liquid, solid is the ammonium sulfate for removing ammonium thiocyanate, agricultural fertilizer can be directly used as, liquid adds moderate amount of sulfuric acid copper and ammoniacal liquor, generate the cuprous sulfocyanide precipitation of white, after centrifuge separates solid and liquid, liquid continuously adds ammonium sulfate crude salt, the ammonium thiocyanate in dissolving crude salt, such circulate operation.The present invention possesses low production cost, without waste water and dregs waste gas, without heating, and simple and reliable process, the characteristics of remarkable in economical benefits.
Description
Technical field
The invention belongs to technical field of fine, and in particular to remove the side of ammonium thiocyanate in a kind of crude salt from ammonium sulfate
Method.
Background technology
Domestic many coke-oven plants use HPF sulfur removal technologies desulfuration and decyanation from coal gas, daily must outer a part of desulfurization of row
Waste liquid simultaneously keeps the skin wet to keep desulfuration efficiency higher.Desulfurization waste liquor can extract after being processed through Steppecd crystallization and isolate sulphur
Ammonium cyanate, three kinds of salt of ATS (Ammonium thiosulphate) and ammonium sulfate, but the general all ammonium thiocyanates containing 1-20% of the ammonium sulfate isolated
And the ATS (Ammonium thiosulphate) of 1-16%, referred to as ammonium sulfate crude salt.Because ammonium thiocyanate has larger harmfulness to plant, this
A little ammonium sulfate crude salts could be used after must removing ammonium thiocyanate as agricultural fertilizer.
The content of the invention
To overcome the shortcomings of the existing technology, the invention provides the side that ammonium thiocyanate is eliminated from a kind of crude salt from ammonium sulfate
Method, to simple and easy to apply, cost of investment is relatively low, the characteristic of three-waste free pollution.
The present invention realizes that the technical scheme of above-mentioned technical purpose is as follows：
The ammonium thiocyanate and ATS (Ammonium thiosulphate) in 2-5 tons of ammonium sulfate crude salt are dissolved with 1 cubic metre of ammonium sulfate saturated solution, from
After scheming separates solid and liquid, solid is the ammonium sulfate for removing ammonium thiocyanate, can be directly used as agricultural fertilizer.Added in liquid suitable
The amount of the material that amount copper sulphate and ammoniacal liquor, copper sulphate and ammoniacal liquor are added is respectively 95% He of the amount of ammonium thiocyanate material in filtrate
150%, react for：
(NH4)2S2O3+4CuSO4·5H2O+4NH4SCN+6NH3·H2O→4CuSCN↓+2(NH4)2SO3+4(NH4)2SO4+
23H2O
The cuprous sulfocyanide precipitation of white is generated, after centrifuge separates solid and liquid, every cubic metre of filtrate continuously adds
2-5 tons of ammonium sulfate crude salt, the ammonium thiocyanate in dissolving crude salt, such circulate operation.
The innovation of the art of this patent be with ammonium sulfate saturated solution dissolve ammonium sulfate crude salt in ammonium thiocyanate without
Dissolving ammonium sulfate, after centrifuge separates solid and liquid, liquid adds copper sulphate and ammoniacal liquor that ammonium thiocyanate is changed into thiocyanic acid
Cuprous precipitation, so as to rhodanate be separated from filtrate, filtrate continues to dissolve the ammonium thiocyanate in ammonium sulfate crude salt.This
Patented technology coke-oven plant is processed the ammonium sulfate crude salt produced during desulfurization waste liquor using method simple and easy to apply and removes sulphur
Ammonium cyanate, possesses low production cost, without waste water and dregs waste gas, without heating, simple and reliable process, remarkable in economical benefits
The characteristics of.
Specific embodiment
Below in conjunction with specific embodiment in detail the present invention is described in detail, but the present invention is not limited to following embodiments.
Embodiment 1
The ammonium sulfate crude salt of certain coke-oven plant offer is provided, is that ammonium thiocyanate content is 18.7wt%, thio sulphur through analysis ingredient
Sour ammonium content is 13.5wt%, and ammonium sulphate content is 67.1wt%.10 liters of saturated ammonium sulfate solution when taking room temperature, add the sulfuric acid
20 kilograms of ammonium crude salt, stirring isolates undissolved solid after 30 minutes through centrifuge, is agricultural ammonium sulfate product, through analyzing sulphur
Ammonium cyanate content is less than 0.7wt%.The liquid that centrifuge is isolated adds 11.7 kilograms of Salzburg vitriol, 25% industrial ammonia
5.6 liters of (13.33 mol/L), stirring isolates white solid after 30 minutes through centrifuge, is cuprous sulfocyanide product.Centrifugation
The liquid that machine is isolated continues to add 20 kilograms of ammonium sulfate crude salt, and stirring is isolated undissolved solid through centrifuge after 30 minutes
Body, is agricultural ammonium sulfate product.The liquid that centrifuge is isolated adds 11.7 kilograms of Salzburg vitriol, 25% industrial ammonia
5.6 liters of (13.33 mol/L), stirring isolates white solid after 30 minutes through centrifuge, is cuprous sulfocyanide product.It is above-mentioned
Such circulate operation.
Embodiment 2
The ammonium sulfate crude salt of certain coke-oven plant offer is provided, is that ammonium thiocyanate content is 1.8wt%, thiosulfuric acid through analysis ingredient
Ammonium content is 3.6wt%, and ammonium sulphate content is 94.0wt%.10 liters of saturated ammonium sulfate solution when taking room temperature, add the ammonium sulfate
50 kilograms of crude salt, stirring isolates undissolved solid after 30 minutes through centrifuge, is agricultural ammonium sulfate product, through analyzing sulphur cyanogen
Sour ammonium content is less than 0.5wt%.The liquid that centrifuge is isolated adds 2.8 kilograms of Salzburg vitriol, 25% industrial ammonia
0.15 liter of (13.33 mol/L), stirring isolates white solid after 30 minutes through centrifuge, is cuprous sulfocyanide product.Centrifugation
The liquid that machine is isolated continues to add 20 kilograms of ammonium sulfate crude salt, and stirring is isolated undissolved solid through centrifuge after 30 minutes
Body, is agricultural ammonium sulfate product.The liquid that centrifuge is isolated adds 2.8 kilograms of Salzburg vitriol, 25% industrial ammonia
0.15 liter of (13.33 mol/L), stirring isolates white solid after 30 minutes through centrifuge, is cuprous sulfocyanide product.It is above-mentioned
Such circulate operation.
Claims (1)
1. a kind of method that ammonium thiocyanate is removed in crude salt from ammonium sulfate, it is characterised in that comprise the following steps：
(1) ammonium thiocyanate and ATS (Ammonium thiosulphate) in 2~5 tons of ammonium sulfate crude salts are dissolved with 1 cubic metre of ammonium sulfate saturated solution, from
After the heart is separated, solid is the ammonium sulfate for removing ammonium thiocyanate, can be directly used as agricultural fertilizer；
(2) moderate amount of sulfuric acid copper and ammoniacal liquor are added in the liquid that step (1) centrifugation goes out, the cuprous sulfocyanide for generating white sinks
Form sediment；
The amount of the material that the copper sulphate and ammoniacal liquor are added is respectively the 95% and 150% of the amount of ammonium thiocyanate material in liquid；
(3) 2~5 tons of ammonium sulfate crude salt, such circulate operation are continuously added in the liquid after step (2) centrifugation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046411.XA CN106745064A (en) | 2016-11-23 | 2016-11-23 | A kind of method that ammonium thiocyanate is removed in the crude salt from ammonium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046411.XA CN106745064A (en) | 2016-11-23 | 2016-11-23 | A kind of method that ammonium thiocyanate is removed in the crude salt from ammonium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106745064A true CN106745064A (en) | 2017-05-31 |
Family
ID=58974326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046411.XA Pending CN106745064A (en) | 2016-11-23 | 2016-11-23 | A kind of method that ammonium thiocyanate is removed in the crude salt from ammonium sulfate |
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| Country | Link |
|---|---|
| CN (1) | CN106745064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408943A (en) * | 2021-11-26 | 2022-04-29 | 安徽英瑞骐生物科技有限公司 | Method for preparing cuprous thiocyanate nanoparticles through solid-phase synthesis |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985359A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院过程工程研究所 | Method for preparing thiocyanate and sulfate by utilizing desulfuration waste liquor in coking plant |
| CN102259894A (en) * | 2011-05-27 | 2011-11-30 | 山东美科动力有限公司 | Comprehensive recovery process of secondary salts from coking plant desulfurization waste liquid |
| CN102874845A (en) * | 2012-10-15 | 2013-01-16 | 安徽工业大学 | Extraction of ammonium thiocyanate from coking and desulfurization waste liquid |
-
2016
- 2016-11-23 CN CN201611046411.XA patent/CN106745064A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985359A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院过程工程研究所 | Method for preparing thiocyanate and sulfate by utilizing desulfuration waste liquor in coking plant |
| CN102259894A (en) * | 2011-05-27 | 2011-11-30 | 山东美科动力有限公司 | Comprehensive recovery process of secondary salts from coking plant desulfurization waste liquid |
| CN102874845A (en) * | 2012-10-15 | 2013-01-16 | 安徽工业大学 | Extraction of ammonium thiocyanate from coking and desulfurization waste liquid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408943A (en) * | 2021-11-26 | 2022-04-29 | 安徽英瑞骐生物科技有限公司 | Method for preparing cuprous thiocyanate nanoparticles through solid-phase synthesis |
| CN114408943B (en) * | 2021-11-26 | 2023-03-10 | 安徽英瑞骐生物科技有限公司 | Method for preparing cuprous thiocyanate nanoparticles through solid-phase synthesis |
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| PB01 | Publication | ||
| 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: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |