CN1205124C - Method for separating magma in producing soda process - Google Patents
Method for separating magma in producing soda process Download PDFInfo
- Publication number
- CN1205124C CN1205124C CN 03132033 CN03132033A CN1205124C CN 1205124 C CN1205124 C CN 1205124C CN 03132033 CN03132033 CN 03132033 CN 03132033 A CN03132033 A CN 03132033A CN 1205124 C CN1205124 C CN 1205124C
- Authority
- CN
- China
- Prior art keywords
- magma
- alkali
- soda ash
- filter
- separate
- 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.)
- Expired - Lifetime
Links
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 19
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 19
- 239000012452 mother liquor Substances 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 6
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 abstract 2
- 238000002386 leaching Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The present invention relates to a method for separating magma in the production process of calcined soda. The present invention is characterized in that sodium bicarbonate synthesized in a carbonization tower is crystallized, and magma is taken out of the carbonization tower and led into a hydraulic cyclone to be separated in a hydraulic and rotary mode. After the ratio value of solids to liquid in the magma in the hydraulic cyclone achieves 35% to 40%, the magma is led into an alkali filter to be separated, and solids obtained by separating the magma is calcined to obtain calcined soda. With the method of the present invention, the magma is separated by the hydraulic cyclone in a hydraulic and rotary mode, the ratio of solids to liquid is enhanced by 12 to 18%, and the quantity of mother liquid overflowing from the hydraulic cyclone achieves 10 to 15%, thereby reducing the production load of the alkali filter and causing the productivity of the alkali filter to be enhanced by more than 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 CN1472139A (en) | 2004-02-04 |
| CN1205124C true CN1205124C (en) | 2005-06-08 |
Family
ID=34153953
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 |
|---|---|
| CN (1) | CN1205124C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298568B (en) * | 2018-01-26 | 2020-02-18 | 安徽德邦化工有限公司 | Process for thickening heavy alkali filtrate |
| CN109045830B (en) * | 2018-08-23 | 2021-02-02 | 徐翔 | Mother liquor discharge system |
-
2003
- 2003-07-10 CN CN 03132033 patent/CN1205124C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1472139A (en) | 2004-02-04 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHAO XIANGHAI Free format text: FORMER OWNER: DEBANG CHEMICAL INDUSTRY GROUP CO. LTD., JIANGSU Effective date: 20050819 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
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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Free format text: CORRECT: ADDRESS; FROM: 222001 LIANYUNGANG, JIANGSU PROVINCE TO: 222000 LIANYUNGANG, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
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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| CX01 | Expiry of patent term |
Granted publication date: 20050608 |
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