CN1063664A - A kind of method of washing heavy sodium hydrate filter cake - Google Patents
A kind of method of washing heavy sodium hydrate filter cake Download PDFInfo
- Publication number
- CN1063664A CN1063664A CN 91106382 CN91106382A CN1063664A CN 1063664 A CN1063664 A CN 1063664A CN 91106382 CN91106382 CN 91106382 CN 91106382 A CN91106382 A CN 91106382A CN 1063664 A CN1063664 A CN 1063664A
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- China
- Prior art keywords
- filter cake
- washing
- sodium hydrate
- heavy
- water content
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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 belongs to the soda ash production technology and improve the field.For reducing heavy alkali water content, in filtered wash solution, add Voranol EP 2001, or its derivative, or its compound, in order to washing heavy sodium hydrate filter cake, reach and save the washings consumption, cut down the consumption of energy, improve process operations and the purpose that improves the calcining furnace ability down, and help low saline and alkaline production.
Description
The invention belongs to the soda ash production technology and improve the field.
During soda ash is produced,, use the washing of fresh water or light liquid to be attracted to the lip-deep heavy sodium hydrate filter cake layer of filter filter drum usually for reducing heavy alkali salt part.Its saltiness of heavy alkali and water content after washing reach requirement substantially.Heavy alkali water content is to process operations, consumption and calcining ability etc. have crucial influence down.How further to reduce heavy alkali water content, be still the important topic that current soda ash is produced.
Task of the present invention is to add a kind of tensio-active agent in fresh water or light liquid, improves washing liquid infiltration, penetrating quality, reduces the tension force on washings surface, reaches the purpose that reduces heavy alkali water content in order to washing heavy sodium hydrate filter cake.
The present invention adds Voranol EP 2001 in fresh water or light liquid, or its derivative, or its compound, with washing heavy sodium hydrate filter cake.The chemical general formula of this Voranol EP 2001 or its derivative is RO(CH
2CH
2O) nXmM.R is straight-chain paraffin or side chain alkane, C=5-18 wherein, and n=1-15, X are acid group, M is univalent cation or hydrogen, m=0-1.R also can be a straight chain aromatic hydrocarbons
, R ' is straight-chain paraffin, wherein C=8-18.Main component content is not less than 80% in its compound.After washing, heavy alkali water content obviously descends.
The Voranol EP 2001 that the present invention uses, or its derivative, or the concentration that its compound adds is in 1.0g/l, concentration increases again, and its heavy alkali water content can not obviously reduce.
The method of washing heavy sodium hydrate filter cake of the present invention is under same working condition, with the washings of equivalent, the water content of heavy alkali can reduce 2-5%, reduces the calcination process energy consumption, improves the calcining furnace operation, improve calcining furnace throughput, also corresponding simultaneously reduction soda ash saltiness helps low saline and alkaline production.When guaranteeing the certain standard of soda ash saltiness, this method can be saved the washings consumption, improves mother liquid concentration, and then reduces the distillation process energy consumption.
Be illustrated below in conjunction with specific examples:
Example 1 is added Voranol EP 2001 in fresh water or light liquid washings, concentration is 0.5g/l, and the washings consumption is 0.6m
3/ t soda ash, heavy after tested alkali water content is 16.49% after the washing, the soda ash saltiness is 0.52%.During with the former washings of equivalent, heavy alkali water content is 21.15%, and the soda ash saltiness is 0.66%, add this agent and can make heavy alkali water content reduce by 4.66%, and corresponding reduction soda ash saltiness.
Example 2 in fresh water or light liquid washings, is added Voranol EP 2001 sodium sulfate, and concentration is 1.0g/l, and the washings consumption is 0.81m
3/ t soda ash, heavy after tested alkali water content is 19.74% after the washing, heavy alkali saltiness is 0.219%, during with the former washings of equivalent, heavy alkali water content is 24.13%, and heavy alkali saltiness is 0.246%, add this agent and can make heavy alkali water content reduce by 4.39%, and corresponding reduction soda ash saltiness.
Example 3 in fresh water or light liquid washings, is added polyoxyethylene octylphenol ether, and concentration is 0.5g/l, and adding after scouring liquid consumption is 0.7m
3/ t soda ash, heavy after tested alkali water content 17.11% after the washing, soda ash saltiness 0.21%, during with the former washings of equivalent, its heavy alkali water content 20.70%, soda ash saltiness 0.26% is added this agent and can be made heavy alkali water content reduce by 3.59%, and corresponding reduction soda ash saltiness.
Claims (2)
1, a kind of method of washing heavy sodium hydrate filter cake is used the washing of fresh water or light liquid washings, it is characterized in that in this washings, adding Voranol EP 2001, or its derivative, or its compound.
2, method according to claim 1 is characterized in that adding the concentration of this additive in 1.0g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106382 CN1063664A (en) | 1991-04-11 | 1991-04-11 | A kind of method of washing heavy sodium hydrate filter cake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106382 CN1063664A (en) | 1991-04-11 | 1991-04-11 | A kind of method of washing heavy sodium hydrate filter cake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1063664A true CN1063664A (en) | 1992-08-19 |
Family
ID=4907804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106382 Pending CN1063664A (en) | 1991-04-11 | 1991-04-11 | A kind of method of washing heavy sodium hydrate filter cake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143116A (en) * | 2013-04-25 | 2015-12-09 | 栗田工业株式会社 | Aid for dewatering lime mud and method for dewatering lime mud using said aid |
| CN109516478A (en) * | 2018-12-04 | 2019-03-26 | 唐山三友化工股份有限公司 | Low ammonia weight in wet base alkali production technology |
-
1991
- 1991-04-11 CN CN 91106382 patent/CN1063664A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143116A (en) * | 2013-04-25 | 2015-12-09 | 栗田工业株式会社 | Aid for dewatering lime mud and method for dewatering lime mud using said aid |
| CN105143116B (en) * | 2013-04-25 | 2016-08-31 | 栗田工业株式会社 | The chemical conditioner of lime mud and use its dewatering of lime mud |
| CN109516478A (en) * | 2018-12-04 | 2019-03-26 | 唐山三友化工股份有限公司 | Low ammonia weight in wet base alkali production technology |
| CN109516478B (en) * | 2018-12-04 | 2020-12-01 | 唐山三友化工股份有限公司 | Production process of low-ammonia wet heavy alkali |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |