CN1270923A - Non-stop cylinder washing technology for producing sodium carbonate evaportating and crystallizing natural soda - Google Patents
Non-stop cylinder washing technology for producing sodium carbonate evaportating and crystallizing natural soda Download PDFInfo
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- CN1270923A CN1270923A CN 99105321 CN99105321A CN1270923A CN 1270923 A CN1270923 A CN 1270923A CN 99105321 CN99105321 CN 99105321 CN 99105321 A CN99105321 A CN 99105321A CN 1270923 A CN1270923 A CN 1270923A
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- stop cylinder
- sodium carbonate
- evaporating
- washing technology
- cylinder washing
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to the field of chemical technology. A non-intermittent pot scrubbing technology for making sodium carbonate from trona includes three points of solving the problem in crystallization, the first is to raise the smoothness of evaporating pot and heat-exchanging inner wall; the second is to control the one-effect evaporation temperature at 114-124 deg.C and the two-effect evaporation temperature at 91-101 deg.C to ensure no crystallization of bittern; and the third is to use two evaporating pots alternately during the three-effect evaporation. The technology makes it possible to prolong greatly the scrubbing period of the two-effect evaporating pot.
Description
The present invention is a kind of urao evaporative crystallization system soda ash non-stop cylinder washing technology, belongs to chemical field.
In the process of urao evaporative crystallization system soda ash, generally will pass through triple effect evaporation at present, the effect of preceding two-effect evaporation is to concentrate saltwater brine, and triple effect evaporation is to separate out crystal.But a problem that often runs into is in preceding two-effect evaporation process, and evaporating pot and heat transfer tube inwall just begin fouling, when fouling to a certain degree will influencing normal production, thereby have to stop production and remove to clean evaporating pot.So both influenced production, pretty troublesome again, also caused certain waste simultaneously.
In order to solve in the process of urao evaporative crystallization system soda ash, the problem of evaporating pot crystallization fouling, spy of the present invention has proposed a kind of urao evaporative crystallization system soda ash non-stop cylinder washing technology.
Urao evaporative crystallization system soda ash non-stop cylinder washing technology of the present invention, mainly start with and solve the crystallization scale problems from three aspects, first aspect improves the smooth finish of evaporating pot and heat transfer tube inwall, for spraying in the evaporating pot, or make composition board, as titanium steel, stainless steel etc., heat transfer tube also adopts ganoid material, makes as 316L, 314,304 steel; Second aspect is imitated vaporization temperature with one and is controlled between 114～124 ℃, and two temperature of imitating evaporation are controlled between 91～101 ℃, and is non-crystallizable to guarantee saltwater brine; The 3rd is when triple effect evaporation, adopts two evaporating pots, uses by turns.
Evaporating pot in the past adopts carbon steel material more, and its surface is comparatively coarse, form fouling easily, and present technique adopts ganoid material just to overcome this problem; Temperature plays a part very crucial for the crystallization of soda ash, temperature is too high to produce crystallize sodium carbonate easily in advance, and temperature is crossed the low sesquialter alkali crystallization that is easy to generate; One imitates vaporization temperature is controlled between 114～124 ℃, and two temperature of imitating evaporation are controlled between 91～101 ℃, and after tested, in the said temperature section, saltwater brine crystallization fouling probability is minimum; The purpose of triple effect evaporator produces crystallization exactly, and cleaning is inevitably, thereby adopts two evaporating pots to clean by turns and work, can guarantee to produce and normally carry out.Adopt present technique can prolong the cleaning interval that the first two imitates evaporating pot widely.
Embodiment:
Urao evaporative crystallization system soda ash non-stop cylinder washing technology of the present invention, the evaporating pot inwall is made composition board, and outer wall is a plain carbon stool, and inwall is that titanium steel or stainless steel are made, and heat transfer tube adopts the 316L steel to make; One imitates vaporization temperature is controlled between 119 ± 2 ℃, and two temperature of imitating evaporation are controlled between 96 ± 2 ℃; Adopt two triple effect evaporators, use by turns.
Claims (1)
1. urao evaporative crystallization system soda ash non-stop cylinder washing technology is characterized in that:
A. improve the smooth finish of evaporating pot and heat transfer tube inwall, for spraying in the evaporating pot, or make composition board, as titanium steel, stainless steel etc., heat transfer tube also adopts ganoid material, makes as 316L, 314,304 steel;
B. imitate vaporization temperature with one and be controlled between 114～124 ℃, two temperature of imitating evaporation are controlled between 91～101 ℃;
C. when triple effect evaporation, adopt two evaporating pots, use by turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105321 CN1270923A (en) | 1999-04-19 | 1999-04-19 | Non-stop cylinder washing technology for producing sodium carbonate evaportating and crystallizing natural soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105321 CN1270923A (en) | 1999-04-19 | 1999-04-19 | Non-stop cylinder washing technology for producing sodium carbonate evaportating and crystallizing natural soda |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1270923A true CN1270923A (en) | 2000-10-25 |
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ID=5271956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99105321 Pending CN1270923A (en) | 1999-04-19 | 1999-04-19 | Non-stop cylinder washing technology for producing sodium carbonate evaportating and crystallizing natural soda |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105732411A (en) * | 2016-03-04 | 2016-07-06 | 广东立国制药有限公司 | System and process for recovering dimethylacetamide from cefuroxime axetil production waste liquor |
| CN109084602A (en) * | 2018-06-28 | 2018-12-25 | 新疆华泰重化工有限责任公司 | A method of improving the tubular heat exchanger cycle of operation |
-
1999
- 1999-04-19 CN CN 99105321 patent/CN1270923A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105732411A (en) * | 2016-03-04 | 2016-07-06 | 广东立国制药有限公司 | System and process for recovering dimethylacetamide from cefuroxime axetil production waste liquor |
| CN109084602A (en) * | 2018-06-28 | 2018-12-25 | 新疆华泰重化工有限责任公司 | A method of improving the tubular heat exchanger cycle of operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |