CN102304379A - Method for removing ammonium salt in coal tar - Google Patents
Method for removing ammonium salt in coal tar Download PDFInfo
- Publication number
- CN102304379A CN102304379A CN201110229739A CN201110229739A CN102304379A CN 102304379 A CN102304379 A CN 102304379A CN 201110229739 A CN201110229739 A CN 201110229739A CN 201110229739 A CN201110229739 A CN 201110229739A CN 102304379 A CN102304379 A CN 102304379A
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- Prior art keywords
- coal tar
- ammonium salt
- solution
- tar
- pure
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- 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 method for removing ammonium salt in coal tar. The method comprises the following steps: adding a Ca(OH)2 solution in the coal tar; and then stirring in a stirring tank, wherein the weight ratio of coal tar to pure Ca(OH)2 solid is 1: (0.001-0.002). According to the invention, through adding the Ca(OH)2 solution which is low in price into the coal tar, on the one hand, the ammonium salt in the coal tar is removed so as to protect production equipment, and on the other hand, calcium ion dose not influence the quality of a product so that high-quality modified pitch can be produced; and simultaneously, production cost can also be reduced.
Description
Technical field
The present invention relates to remove in a kind of coal tar course of processing the method for ammonium salt in the coal tar.
Background technology
Coal tar is the complex mixture of up to ten thousand kinds of components; A lot of compounds in the coal tar are valuable raw materials of plastics, synthetic rubber, agricultural chemicals, medicine, high temperature material and national defense industry, and also some polycyclic hydrocarbon compounds is that petrochemical complex can not be produced and alternate.Contain ammonium salt in the coal tar, be generally ammonium chloride, can cause corrosion, in the process of coal tar raw material processing treatment, need earlier ammonium salt wherein to be removed, with protection equipment to equipment.
The method of existing removal ammonium salt is: before one section pump of coal tar, add soda ash (Na
2CO
3).Because the price comparison of soda ash is expensive, has caused production cost than higher.On the other hand, take after this processes in the heavy constituent sodium ions content higher, thereby cause product single; Can only produce mid-temperature pitch and oil fuel; Sodium ion index in the product innovation carbon black oil that will produce is had the phenomenon that exceeds standard, influence quality product, can not adapt to change of market.
Summary of the invention
Goal of the invention: the objective of the invention is to the deficiency to prior art, a kind of method that does not influence ammonium salt in the low removal coal tar course of processing of product quality, production cost is provided.
Technical scheme: the method for ammonium salt in the removal coal tar of the present invention adds Ca (OH) in coal tar
2Solution gets in the steel basin then and stirs; Said coal tar and pure Ca (OH)
2The solid weight ratio is 1: 0.001～0.002.
Most preferred, said coal tar and pure Ca (OH)
2The solid weight ratio is 1: 0.0017.
Said Ca (OH)
2Solution adds in the process of coal tar entering tar strainer.
Because Ca (OH)
2The add-on of solution is smaller, and the add-on control ratio is difficulty, so preferably adopt pump with said Ca (OH)
2Solution is squeezed in the coal tar, and pump outlet is provided with control Ca (OH)
2The valve of solution flow.
Beneficial effect: the present invention compared with prior art, its beneficial effect is: the present invention is through the cheap Ca (OH) of adding price comparison in the coal tar
2Solution has been removed the ammonium salt in the coal tar on the one hand, has protected production unit, and on the other hand, calcium ion can be not influential to the quality of product, can produce the fine modified pitch; Can also reduce production costs simultaneously.
Embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
The method of ammonium salt in the removal coal tar according to the invention; At two aqua calcis Preparation tanks of the other preparation of oil depot tar strainer; In the tar strainer, add aqua calcis with a hydroxide calcium pump; Calculate the add-on of calcium hydroxide with a under meter; Through pump discharge valve control aqua calcis add-on, get in the steel basin then and stir; Said coal tar and pure Ca (OH)
2The solid weight ratio is 1: 0.0017.
The Ca (OH) that adds
2Following reaction takes place with ammonium salt:
NH
4 ++OH
-＝NH3↑+H
2O
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in the form and details to it.
Claims (4)
1. a method of removing ammonium salt in the coal tar is characterized in that: in coal tar, add Ca (OH)
2Solution gets in the steel basin then and stirs; Said coal tar and pure Ca (OH)
2The solid weight ratio is 1: 0.001～0.002.
2. the method for ammonium salt in the removal coal tar according to claim 1 is characterized in that: said coal tar and pure Ca (OH)
2The solid weight ratio is 1: 0.0017.
3. the method for ammonium salt in the removal coal tar according to claim 1 is characterized in that: said Ca (OH)
2Solution adds in the process of coal tar entering tar strainer.
4. the method for ammonium salt in the removal coal tar according to claim 1 is characterized in that: said Ca (OH)
2Solution adds through pump, and pump outlet is provided with control Ca (OH)
2The valve of solution flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110229739A CN102304379A (en) | 2011-08-11 | 2011-08-11 | Method for removing ammonium salt in coal tar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110229739A CN102304379A (en) | 2011-08-11 | 2011-08-11 | Method for removing ammonium salt in coal tar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102304379A true CN102304379A (en) | 2012-01-04 |
Family
ID=45378299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110229739A Pending CN102304379A (en) | 2011-08-11 | 2011-08-11 | Method for removing ammonium salt in coal tar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102304379A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0598263A (en) * | 1991-10-09 | 1993-04-20 | Osaka Gas Co Ltd | Refining of liquid fluorinated pitch |
| CN1693427A (en) * | 2005-04-18 | 2005-11-09 | 连德宏 | Coalificat diesel oil |
| CN101037605A (en) * | 2006-03-13 | 2007-09-19 | 上海梅山钢铁股份有限公司 | Acid tar processing method |
| CN102021011A (en) * | 2010-12-29 | 2011-04-20 | 攀钢集团钢铁钒钛股份有限公司 | Method for producing asphalt from coal tar |
-
2011
- 2011-08-11 CN CN201110229739A patent/CN102304379A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0598263A (en) * | 1991-10-09 | 1993-04-20 | Osaka Gas Co Ltd | Refining of liquid fluorinated pitch |
| CN1693427A (en) * | 2005-04-18 | 2005-11-09 | 连德宏 | Coalificat diesel oil |
| CN101037605A (en) * | 2006-03-13 | 2007-09-19 | 上海梅山钢铁股份有限公司 | Acid tar processing method |
| CN102021011A (en) * | 2010-12-29 | 2011-04-20 | 攀钢集团钢铁钒钛股份有限公司 | Method for producing asphalt from coal tar |
Non-Patent Citations (1)
| Title |
|---|
| 于连海等: "润滑油精制后的废渣油调和制备燃料油的研究", 《能源工程》, no. 3, 30 June 2004 (2004-06-30), pages 8 - 11 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120104 |