CN1472139A - Method for separating magma in producing soda process - Google Patents
Method for separating magma in producing soda process Download PDFInfo
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- CN1472139A CN1472139A CNA031320333A CN03132033A CN1472139A CN 1472139 A CN1472139 A CN 1472139A CN A031320333 A CNA031320333 A CN A031320333A CN 03132033 A CN03132033 A CN 03132033A CN 1472139 A CN1472139 A CN 1472139A
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- magma
- alkali
- soda ash
- separate
- filter
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Abstract
A process for separating crystal slurry in the production of sodium carbonate includes such steps as synthesizing sodium bicarbonate crystal in carbonizing tower, discharging the crystal slurry, hydraulic cyclone separating, alkali filtering to obtain solid and calcining. Its advantage is low load of alkali filter to increase its productivity by 20%.
Description
Technical field
The present invention relates to a kind of preparation method of alkaline carbonate, the isolating method of magma in particularly a kind of soda ash production process.
Background technology
In the prior art, use solvay soda process, join alkaline process production Soda Ash Danse, after its traditional technology was separated for the magma that is taken out by carbonating tower directly enters Alkali-filter, process was calcined and finished product.Its defective is: one, the crystal grain in the magma that obtains of building-up reactions is less, and when entering Alkali-filter and carrying out filtering separation, crystal grain that part is tiny and the heavy alkali that is partly dissolved in the mother liquor can not be isolated, and with the mother liquor outflow, cause yield lower; Two, it is lower to enter the solid-to-liquid ratio of the magma before the Alkali-filter, is generally 22-23%, thereby causes the production efficiency of Alkali-filter lower, has strengthened the load of Alkali-filter, and its throughput is reduced; Three, the leaching requirement of Alkali-filter is big, and generally at 700-720 kilogram/ton soda ash, under the constant situation of Alkali-filter leaching requirement, the salinity of the prepared heavy alkali that comes out is higher.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, has proposed the isolating method of magma in a kind of soda ash production process, and it can improve the throughput of Alkali-filter, under the constant situation of Alkali-filter leaching requirement, the salinity of heavy alkali is reduced.
The technical problem to be solved in the present invention is achieved through the following technical solutions.The present invention is the isolating method of magma in a kind of soda ash production process, be characterized in, in carbonating tower synthetic obtain the sodium bicarbonate crystallization after, magma is taken out from carbonating tower, and carry out spinning liquid in the importing wet cyclone and separate, after the solid-to-liquid ratio of magma in the wet cyclone reaches 35%～40%, again magma is imported Alkali-filter and separate, to separate back gained solid and calcine, get soda ash.
Technical problem to be solved by this invention can also further realize by following technical scheme.The isolating method of magma is characterized in the above-described soda ash production process, will import system alkali system from the overflow mother liquor that the wet cyclone overflow port is derived and carry out recirculation.Like this, can, both can prevent the pollution of the environment, can make full use of starting material again, save cost.
Compared with prior art, the present invention has following advantage:
1, magma carries out the spinning liquid separation through wet cyclone, its solid-to-liquid ratio has improved 12-18%, and reached 10-15% from the mother liquor amount that wet cyclone overflows, thereby greatly reduced the production load of Alkali-filter, the throughput of Alkali-filter has been improved more than 20%.
2, after Alkali-filter filtered, filter cake needed to wash with the light liquid of system, and with the wherein residual mother liquor of displacement, its leaching requirement is 550-580 kilogram/ton, has reduced 120-170 kilogram/ton soda ash than prior art, has saved cost greatly; Under the situation of same leaching requirement, the salt content that separates the soda ash of preparing with technology of the present invention is about 0.3-0.4%, has reduced 0.1-0.3%.
3, the soda ash made from the isolated heavy alkali of the inventive method, its premium grads is more than 95%, to have improved more than 10% than prior art.
4, the inventive method is simple to operation, and the maintenance rate of equipment used is low, and equipment is simple, and floor space is little.
Embodiment
Below embodiment be in order to make those skilled in the art understand the present invention better, but do not limit the present invention in any way.
Embodiment 1.The isolating method of magma in a kind of soda ash production process, in carbonating tower synthetic obtain the sodium bicarbonate crystallization after, magma is taken out from carbonating tower, and carry out spinning liquid in the importing wet cyclone and separate, after the solid-to-liquid ratio of magma in the wet cyclone reaches 35%, again magma is imported Alkali-filter and separate, will separate back gained solid and calcine, get soda ash.
Embodiment 2.The isolating method of magma in a kind of soda ash production process, in carbonating tower synthetic obtain the sodium bicarbonate crystallization after, magma is taken out from carbonating tower, and carry out spinning liquid in the importing wet cyclone and separate, after the solid-to-liquid ratio of magma in the wet cyclone reaches 40%, again magma is imported Alkali-filter and separate, the overflow mother liquor of deriving from the wet cyclone overflow port enters system alkali system and carries out recirculation, to separate back gained solid and calcine, get soda ash.
Embodiment 3.The isolating method of magma in a kind of soda ash production process, in carbonating tower synthetic obtain the sodium bicarbonate crystallization after, magma is taken out from carbonating tower, and carry out spinning liquid in the importing wet cyclone and separate, after the solid-to-liquid ratio of magma in the wet cyclone reaches 38%, again magma is imported Alkali-filter and separate, will separate back gained solid and calcine, get soda ash.
Claims (2)
1, the isolating method of magma in a kind of soda ash production process, it is characterized in that, in carbonating tower synthetic obtain the sodium bicarbonate crystallization after, magma is taken out from carbonating tower, and carry out spinning liquid in the importing wet cyclone and separate, after the solid-to-liquid ratio of magma in the wet cyclone reaches 35%～40%, again magma is imported Alkali-filter and separate, to separate back gained solid and calcine, get soda ash.
2, the isolating method of magma in the soda ash production process according to claim 1 is characterized in that, will import system alkali system from the overflow mother liquor that the wet cyclone overflow port is derived and carry out recirculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132033 CN1205124C (en) | 2003-07-10 | 2003-07-10 | Method for separating magma in producing soda process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132033 CN1205124C (en) | 2003-07-10 | 2003-07-10 | Method for separating magma in producing soda process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1472139A true CN1472139A (en) | 2004-02-04 |
| CN1205124C CN1205124C (en) | 2005-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03132033 Expired - Lifetime CN1205124C (en) | 2003-07-10 | 2003-07-10 | Method for separating magma in producing soda process |
Country Status (1)
| Country | Link |
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| CN (1) | CN1205124C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298568A (en) * | 2018-01-26 | 2018-07-20 | 安徽德邦化工有限公司 | A kind of heavy alkali filtrate stiff technique |
| CN109045830A (en) * | 2018-08-23 | 2018-12-21 | 徐翔 | Mother liquor discharge system |
-
2003
- 2003-07-10 CN CN 03132033 patent/CN1205124C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298568A (en) * | 2018-01-26 | 2018-07-20 | 安徽德邦化工有限公司 | A kind of heavy alkali filtrate stiff technique |
| CN109045830A (en) * | 2018-08-23 | 2018-12-21 | 徐翔 | Mother liquor discharge system |
| CN109045830B (en) * | 2018-08-23 | 2021-02-02 | 徐翔 | Mother liquor discharge system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1205124C (en) | 2005-06-08 |
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Owner name: ZHAO XIANGHAI Free format text: FORMER OWNER: DEBANG CHEMICAL INDUSTRY GROUP CO. LTD., JIANGSU Effective date: 20050819 |
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Effective date of registration: 20050819 Address after: Room 2, unit 21, building 6, 401, neat Road, Sinpo District, Jiangsu, Lianyungang, 222001 Patentee after: Zhao Xianghai Address before: 222004 Jiangsu city of Lianyungang province Haizhou Jiang Hua Lu No. 51 Patentee before: JIANGSU DEBANG CHEMICAL INDUSTRY GROUP CO.,LTD. |
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Owner name: DEBANG CHEMICAL INDUSTRY GROUP CO. LTD., JIANGSU Free format text: FORMER OWNER: ZHAO XIANGHAI Effective date: 20140523 |
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Effective date of registration: 20140523 Address after: 222000 No. 51, South South Road, Haizhou District, Jiangsu, Lianyungang Patentee after: JIANGSU DEBANG CHEMICAL INDUSTRY GROUP CO.,LTD. Address before: Room 2, unit 21, building 6, 401, neat Road, Sinpo District, Jiangsu, Lianyungang, 222001 Patentee before: Zhao Xianghai |
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