CN1221706A - 避免碳酸钠结晶在蒸发器中析出的新工艺 - Google Patents
避免碳酸钠结晶在蒸发器中析出的新工艺 Download PDFInfo
- Publication number
- CN1221706A CN1221706A CN 98112244 CN98112244A CN1221706A CN 1221706 A CN1221706 A CN 1221706A CN 98112244 CN98112244 CN 98112244 CN 98112244 A CN98112244 A CN 98112244A CN 1221706 A CN1221706 A CN 1221706A
- Authority
- CN
- China
- Prior art keywords
- sodium carbonate
- imitated
- crystal
- imitate
- enters
- 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.)
- Granted
Links
- 235000017550 sodium carbonate Nutrition 0.000 title description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 30
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 8
- 239000012452 mother liquor Substances 0.000 claims description 5
- 239000006200 vaporizer Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- GWBWGPRZOYDADH-UHFFFAOYSA-N [C].[Na] Chemical compound [C].[Na] GWBWGPRZOYDADH-UHFFFAOYSA-N 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Alcoholic Beverages (AREA)
- Saccharide Compounds (AREA)
Abstract
本发明公开了一种避免碳酸钠结晶在蒸发器中析出的新工艺,它是将氧化铝生产循环母液按常规工艺进入Ⅳ效、Ⅲ效、Ⅱ效处理后再进入Ⅰ效,此时用泵将沉降槽中的溢流泵入Ⅰ效中与Ⅰ效中的溶液混合后,其混合液再经自蒸发器降温后到沉降槽析出碳酸钠结晶。本发明具有工艺简单、实用的优点,能有效阻止碳酸钠在Ⅰ效结晶析出,克服了原来碳酸钠结晶粘附在蒸发器加热管壁上所带来的诸多弊端,从而大大提高了生产效率,经济效益显著。
Description
本发明属于一种氧化铝生产蒸发工艺。
目前氧化铝厂循环母液蒸发都是采用种分母液进蒸发器，经自蒸发器进入碳酸钠分离沉降槽，溢流作配料用母液。种分母液中碳酸钠由于循环积累，通常含有10～30g/l碳酸钠，蒸发过程中随着溶液中总碱浓度的提高，碳酸钠溶解度急剧下降，超过其平衡浓度从溶液中结晶析出，粘附在加热管壁上，导致传热系数大大降低，热耗增加，由于清理麻烦，劳动强度大，固对生产影响很大。
本发明的目的是：提供一种避免碳酸钠结晶在蒸发器中析出的新工艺，将沉降溢流加入Ⅰ效，使Ⅰ效溶液中碳酸钠未饱和度增大，使其结晶不至于析出。
本发明是这样实现的：它是将氧化铝生产循环母液按常规工艺进入Ⅳ效、Ⅲ效、Ⅱ效处理后再进入Ⅰ效，此时用泵将沉降槽中的溢流泵入Ⅰ效中与Ⅰ效中的溶液混合后，其混合液再经自蒸发器降温后到沉降槽析出碳酸钠结晶。
本发明与现有技术相比，具有工艺简单、实用的优点，能有效阻止碳酸钠在Ⅰ效结晶析出，克服了原来碳酸钠结晶粘附在蒸发器加热管壁上所带来的诸多弊端，从而大大提高了生产效率，经济效益显著。
附图1为本发明的工艺流程简图。
本发明的实施例：将含NT154.8g/l、NK130g/l、NC24.8g/l、A62.gg/l的循环母液350M3/h，进入Ⅵ效，其出料为321M3/h，进入Ⅴ效，Ⅴ效出料为296M3/h，再进入Ⅳ效、Ⅲ效、Ⅱ效，其Ⅱ效出料为236M3/h，再进入Ⅰ效，此时用泵将沉降槽中的溢流按47M3/h泵入Ⅰ效中与Ⅰ效中的溶液混合后，Ⅰ效的出料为257M3/h，将其出料经自蒸发器降温后到沉降槽析出碳酸钠结晶即成。
Claims (1)
1、一种避免碳酸钠结晶在蒸发器中析出的新工艺，它是将氧化铝生产循环母液按常规工艺进入Ⅳ效、Ⅲ效、Ⅱ效处理后再进入Ⅰ效，其特征在于：此时用泵将沉降槽中的溢流泵入Ⅰ效中与Ⅰ效中的溶液混合后，其混合液再经自蒸发器降温后到沉降槽析出碳酸钠结晶。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112244A CN1096419C (zh) | 1998-09-09 | 1998-09-09 | 避免碳酸钠结晶在蒸发器中析出的新工艺 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112244A CN1096419C (zh) | 1998-09-09 | 1998-09-09 | 避免碳酸钠结晶在蒸发器中析出的新工艺 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1221706A true CN1221706A (zh) | 1999-07-07 |
| CN1096419C CN1096419C (zh) | 2002-12-18 |
Family
ID=5222114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98112244A Expired - Lifetime CN1096419C (zh) | 1998-09-09 | 1998-09-09 | 避免碳酸钠结晶在蒸发器中析出的新工艺 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1096419C (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130256A (zh) * | 2011-12-05 | 2013-06-05 | 贵阳铝镁设计研究院有限公司 | 溶出自蒸发工艺 |
| CN105236449A (zh) * | 2008-01-08 | 2016-01-13 | 索尔维公司 | 用于生产碳酸钠的方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103681A (zh) * | 1985-05-06 | 1986-11-12 | 贵阳铝镁设计研究院 | 氧化铝生产中预防蒸发器加热管结垢的方法 |
-
1998
- 1998-09-09 CN CN98112244A patent/CN1096419C/zh not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236449A (zh) * | 2008-01-08 | 2016-01-13 | 索尔维公司 | 用于生产碳酸钠的方法 |
| CN103130256A (zh) * | 2011-12-05 | 2013-06-05 | 贵阳铝镁设计研究院有限公司 | 溶出自蒸发工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1096419C (zh) | 2002-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5281279A (en) | Process for producing refined sugar from raw juices | |
| CN103159194A (zh) | 磷酸二氢钾连续结晶工艺 | |
| US4426322A (en) | Method and apparatus for the desalination of crude tall oil | |
| CN111252790B (zh) | 一种拜耳法高碳碱溶液蒸发和析盐工艺改进的方法 | |
| CN204057987U (zh) | 芒硝连续生产冷冻结晶器 | |
| CN1221706A (zh) | 避免碳酸钠结晶在蒸发器中析出的新工艺 | |
| CN203196371U (zh) | 磷酸二氢钾连续结晶装置 | |
| EP0937702A4 (en) | BENZOIC ACID REFINING PROCESS | |
| CN210065199U (zh) | 一种高纯元明粉的蒸发结晶装置 | |
| CN109045745B (zh) | 一种带提升导流的连续真空冷却结晶装置 | |
| US4036694A (en) | Process for beet sugar production | |
| CN103382035B (zh) | 全连续法生产七水硫酸镁的工艺 | |
| CN102553291A (zh) | 一种降温结晶的方法 | |
| CN213221031U (zh) | 氨基酸的结晶系统 | |
| US5209856A (en) | Process and device for continuous crystallization of a massecuite | |
| CN114892255A (zh) | 一种电镀液循环利用系统及其控制方法 | |
| ITMI950777A1 (it) | Processo per la pruduzione di zucchero da sugo greggio di bietola | |
| CN211005435U (zh) | 制糖结晶罐 | |
| CN1043313A (zh) | 柠檬酸连续结晶的方法和装置 | |
| CN85103681A (zh) | 氧化铝生产中预防蒸发器加热管结垢的方法 | |
| CN108147383B (zh) | 湿法磷酸的脱氟方法 | |
| CN214861311U (zh) | 一种虫螨腈结晶的连续装置 | |
| CN218653067U (zh) | 一种高盐废水无蒸发降盐装置 | |
| US1844020A (en) | Refining sugar | |
| US2563705A (en) | Method of processing citrus juices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINESE ALUMINIUM CO., LTD. Free format text: FORMER OWNER: GUIZHOU ALUMINUM FACTORY Effective date: 20030214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20030214 Address after: No. 12, Fuxing Road, Beijing, No. 10 Patentee after: Aluminum Corporation of China Limited Address before: Guizhou aluminium factory, Baiyun District, Guiyang, Guizhou Patentee before: Guizhou Aluminium Plant |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20021218 |