CN103232147A - Method for improving primary salty mud washing ability - Google Patents
Method for improving primary salty mud washing ability Download PDFInfo
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- CN103232147A CN103232147A CN2013101894971A CN201310189497A CN103232147A CN 103232147 A CN103232147 A CN 103232147A CN 2013101894971 A CN2013101894971 A CN 2013101894971A CN 201310189497 A CN201310189497 A CN 201310189497A CN 103232147 A CN103232147 A CN 103232147A
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- salt slurry
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Abstract
The invention relates to a salty mud washing process, and in particular relates to a method for improving the primary salty mud washing ability. The method comprises the following steps of adding settling agent dry powder and water into a settling agent preparation tank according to a mass ratio (0.025%-0.05%):1, and stirring the settling agent dry powder to be uniformly dissolved in the settling agent preparation tank; adding the well-dissolved settling agent and the primary salty mud into an assistant pump according to the volume ratio of 1: 10 to 20, conveying the mixture into a mud washing barrel pipeline through the assistant pump, and realizing the uniform mixing of the settling agent and the salty mud by utilizing the turbulence characteristic of the liquid inside the conveying pipeline; placing the mixture of settling agent and the salty mud into a mud washing barrel; continuing to mix the salty mud and the settling agent in the mud washing barrel, washing the mixture through the washing water, driving the magnesium hydrate (Mg(OH)2) and calcium sulfate (CaSO4) in the salty mud to be settled through the organic large molecules in the settling agent composition in the washing process, thereby realizing the settlement of the salty mud within a half hour.
Description
Technical field
The present invention relates to a kind of salt slurry washing process, particularly the method for a salt slurry washability of a kind of raising.
Background technology
Need in the soda ash production process crude salt is formed saturated brine after water dissolution, contain a large amount of calcium magnesium additions in crude salt and the salt solution, needing that saturated brine is carried out refining and edulcoration handles, in the two-step approach process for refining, at first utilize milk of lime that magnesium, sulfate radical in the crude brine are removed, form the salt solution that does not contain magnesium, sulfate radical, produce a certain amount of main component Mg (OH) simultaneously
2
, CaSO
4
A salt slurry mud.After one time salt slurry mud entered the mud cleaning bucket cylindrical central sleeve, salt slurry density was low because of one time, and the salt slurry particle is little, and the liquid body disturbance is serious, and sinking velocity is slow in mud cleaning bucket, had seriously restricted the processing power of washing mud equipment and had washed the mud effect; Slow because of a salt slurry lowering speed, each mud cleaning bucket advances mud, the water inlet total amount is restricted, and is maximum as far as possible for making the device processes ability, and guarantees that the upper strata goes out clarification of water, must control the add-on of washing muddy water as far as possible, and the muddy water ratio need be controlled about 1:0.4; But along with the minimizing of washing the muddy water add-on, the washing effect variation; Wash back salt slurry institute salt concentration height, the useless mud salt monthly average of mud cleaning bucket is finished 51.51tt under this situation, and useless mud rate of descent on average finishes 88.6%.Salt surpasses 60 tt sometimes during unusual fluctuations, and each layer of mud cleaning bucket water outlet muddiness, upper strata do not have supernatant liquid, and confessionization salt is wasted seriously with poor water mass, crude salt, slow because of the salt slurry sinking velocity simultaneously, the salt mud stirs the scraping commentaries on classics and is obstructed in bucket, electric current raises, and step-down gear automatic stop phenomenon happens occasionally.With regard to existing installation, strengthen the add-on of washing muddy water, washing effect can make moderate progress, but the processing power of mud cleaning bucket can significantly reduce.
Summary of the invention
The objective of the invention is to solve and existing wash that a salt slurry mud cleaning bucket processing power that exists in the mud technology is low, the problem of washing effect difference, and a kind of method that can make the salt slurry washability of a kind of raising that salt slurry rate of descent significantly promotes is provided.
The present invention adopts following technical scheme:
The method of a salt slurry washability of a kind of raising, carry out as follows:
With settling agent dry powder and water in mass ratio 0.25 ‰～0.5 ‰: 1 ratio adds the auxiliary agent preparation vessel, and settling agent dry powder is by the stirring in the auxiliary agent preparation vessel, uniform dissolution;
The settling agent that dissolving is good and salt slurry add the auxiliary agent pump with the volume ratio of 1:10～20, and the auxiliary agent pump delivery is utilized liquid turbulence characteristic in the transport pipe to the mud cleaning bucket pipeline, and the realization settling agent mixes with the even of salt slurry; The mixture of settling agent and salt slurry joins in the mud cleaning bucket;
Salt slurry, settling agent continue to mix in mud cleaning bucket, and through the washing water washing, in washing process, the organic macromolecule chain in the settling agent composition drives the Mg (OH) in the salt slurry
2
, CaSO
4
Sink, in half an hour, just can realize the sedimentation of salt slurry.
The present invention compared with prior art utilizes organic macromolecule chain in the settling agent composition can effectively drive Mg (OH) in the salt slurry
2
, CaSO
4
The characteristic of sinking increases substantially the salt slurry sinking velocity one time, has avoided a salt slurry low because of density, and sinking velocity is slowly to the influence of device processes ability in each layer of mud cleaning bucket washing process; Utilize macromolecular chain in the settling agent composition to the agglomeration of a salt slurry particle, improve the rate of descent of a salt slurry, make and deposit the mud height and descend, avoided a salt slurry alluvial in bucket, cause the generation of each water outlet turbid phenomenon; Under the effect of settling agent, the salt slurry lowering speed is fast, and washing beck can be discharged salt slurry smoothly, and salt slurry is handled obviously and strengthened, and has improved the flooding quantity of mud cleaning bucket, has reduced the useless mud salt of mud cleaning bucket; Simultaneously because salt slurry sinking velocity increase in mud cleaning bucket makes each mud cleaning bucket go out clarification of water, after having avoided muddy delivering to of mud cleaning bucket water outlet salt operation, enter the salt refining system again and the salt slurry influence that vicious cycle causes the salt refining effect in production system that causes.
Preferred version of the present invention is:
Settling agent is polyacrylamide flocculant.
Settling agent dry powder and water add in the settling agent preparation vessel in mass ratio 0.25 ‰: 1 ratio.
Settling agent dry powder and water are in mass ratio 0.5 ‰: 1 ratio adds in the settling agent preparation vessel.
The volume ratio of settling agent and a salt slurry is 1:12～15.
The volume ratio of settling agent and a salt slurry is 1:12.
The volume ratio of settling agent and a salt slurry is 1:15.
Washing water enter mud cleaning bucket from the bottom, and are successively up, and the washing water salinity increases gradually; Salt slurry enters mud cleaning bucket from the upper strata, and successively descending, salinity reduces gradually in the salt slurry.
The highest muddy water of washing of washing back saliferous is sent by mud cleaning bucket top water outlet pipeline, and the back salt slurry of washing that washing back saliferous is minimum is sent by mud cleaning bucket bottom mud delivery pipeline.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail:
Embodiment 1:
The method of a salt slurry washability of a kind of raising is carried out: (referring to Fig. 1, among the figure: salt slurry storage tank 1, salt slurry transferpump 2, mud cleaning bucket 3, auxiliary agent pump 4, settling agent dry powder feeding device 5, settling agent preparation vessel 6) as follows
The settling agent preparation vessel 6 that mounting strap stirs is installed adding settling agent dry powder feeding device 5 and back with water inlet line at settling agent preparation vessel 6.According to actual production situation, adjust the dry powder of preparation settling agent and the ratio of water, in the production in settling agent dry powder and water with 0.5 ‰: (mass ratio) ratio of 1 adds settling agent dry powder and water in settling agent preparation vessel 6, and the stirring by stirring in the settling agent preparation vessel 6, with dry powder settling agent uniform dissolution.
Used settling agent is polyacrylamide flocculant (PAM) in the present embodiment, polyacrylamide flocculant is the organic high molecular polymer that is polymerized by acrylamide monomer, its molecular structure is (CH2-CH (CONH2)-) n, and polyacrylamide come to divide by its ionic cationic, anionic and non-ionic type.The polyacrylamide that this production is used is ionic.Flocculation agent mechanism: polyacrylamide has the polarity amide group, and amide group is easy to borrow hydrogen bond action in the sand grain surface adsorption.Polyacrylamide has very long molecular chain in addition, and its length has 100A, but the chain width has only 1A, the long-chain of a large number of level has huge adsorption surface area in water, its throwing out is good, also can utilize long-chain to build bridge between the flocculation particle, forms the macrobead flocculation agent and accelerates sedimentation.
After the dry powder settling agent fully dissolves in settling agent preparation vessel 6, be delivered to the import of salt slurry transferpump 2 by auxiliary agent pump 4, be delivered in the pipeline of mud cleaning bucket 3 through salt slurry transferpump 2 with a salt slurry from salt slurry storage tank 1, utilize liquid turbulence characteristic in the transport pipe, realize that settling agent mixes with the even of salt slurry; The mixture of settling agent and salt slurry joins in the cylindrical central sleeve of mud cleaning bucket 3.The settling agent that enters mud cleaning bucket 3 is 1:15 with the salt slurry volume ratio that enters mud cleaning bucket 3; Wash muddy water and enter mud cleaning bucket 3 from the bottom, salt slurry, settling agent continue to mix in mud cleaning bucket, and be successively up, and through the washing water washing, the washing water salinity increases gradually.
Salt slurry enters from mud cleaning bucket 3 upper stratas, and successively descending, salinity reduces gradually in the salt slurry, and final formation with the less muddy water of washing of saliferous washed the lower salt slurry of saliferous, with the countercurrent washing flow process of the higher salt slurry of the higher washing saliferous of saliferous.The higher muddy water water outlet of washing of washing back saliferous is sent by mud cleaning bucket 3 top water outlet pipelines;
When salt slurry successively washed in mud cleaning bucket 3, because the adding of settling agent, settling agent drove salt slurry acceleration decline in the salt mud, has improved the detersive efficiency of mud cleaning bucket 3, and the washability of mud cleaning bucket 3 is significantly improved.
In the present embodiment, the muddy water ratio that enters mud cleaning bucket 3 is 1:1.3, has improved the flooding quantity of mud cleaning bucket 3 greatly, has reduced mud cleaning bucket 3 spoil disposal salts.
In washing process, Mg (OH) 2, CaSO4 that the organic macromolecule chain in the settling agent composition drives in the salt slurry sink, and just can take effect in half an hour, realize the sedimentation of salt slurry.
Present embodiment has improved the washability of mud cleaning bucket 3, has reduced mud cleaning bucket 3 useless mud salts, has improved useless mud sediment, effectively reduces and produces the salt consumption.
Claims (9)
1. method that improves a salt slurry washability, carry out as follows:
With settling agent dry powder and water in mass ratio 0.25 ‰～0.5 ‰: 1 ratio adds the auxiliary agent preparation vessel, and settling agent dry powder is by the stirring in the auxiliary agent preparation vessel, uniform dissolution;
The settling agent that dissolving is good and salt slurry add the auxiliary agent pump with the volume ratio of 1:10～20, and the auxiliary agent pump delivery is utilized liquid turbulence characteristic in the transport pipe to the mud cleaning bucket pipeline, and the realization settling agent mixes with the even of salt slurry; The mixture of settling agent and salt slurry joins in the mud cleaning bucket;
Salt slurry, settling agent continue to mix in mud cleaning bucket, and through the washing water washing, in washing process, the organic macromolecule chain in the settling agent composition drives the Mg (OH) in the salt slurry
2, CaSO
4Sink, in half an hour, just can realize the sedimentation of salt slurry.
2. the method for a salt slurry washability of raising according to claim 1, it is characterized in that: settling agent is polyacrylamide flocculant.
3. the method for a salt slurry washability of raising according to claim 1 is characterized in that: settling agent dry powder and water add in the settling agent preparation vessel in mass ratio 0.25 ‰: 1 ratio.
4. the method for a salt slurry washability of raising according to claim 1 is characterized in that: settling agent dry powder and water are in mass ratio 0.5 ‰: 1 ratio adds in the settling agent preparation vessel.
5. the method for a salt slurry washability of raising according to claim 1, it is characterized in that: the volume ratio of settling agent and a salt slurry is 1:12～15.
6. the method for a salt slurry washability of raising according to claim 1, it is characterized in that: the volume ratio of settling agent and a salt slurry is 1:12.
7. the method for a salt slurry washability of raising according to claim 1, it is characterized in that: the volume ratio of settling agent and a salt slurry is 1:15.
8. the method for a salt slurry washability of raising according to claim 1, it is characterized in that: washing water enter mud cleaning bucket from the bottom, and are successively up, and the washing water salinity increases gradually; Salt slurry enters mud cleaning bucket from the upper strata, and successively descending, salinity reduces gradually in the salt slurry.
9. the method for a salt slurry washability of raising according to claim 1 is characterized in that: wash the highest muddy water of washing of back saliferous and sent by mud cleaning bucket top water outlet pipeline, wash the minimum back salt slurry mud delivery pipeline bottom mud cleaning bucket of washing of back saliferous and send.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101894971A CN103232147A (en) | 2013-05-21 | 2013-05-21 | Method for improving primary salty mud washing ability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101894971A CN103232147A (en) | 2013-05-21 | 2013-05-21 | Method for improving primary salty mud washing ability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648892A (en) * | 2017-11-10 | 2018-02-02 | 云南省核工业二0九地质大队 | A kind of technique for improving subparticle effect of settling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033782A (en) * | 1987-12-30 | 1989-07-12 | 中南工业大学 | A kind of method that purifies sodium sulphate type bittern |
| CN1053045A (en) * | 1989-12-30 | 1991-07-17 | 中南工业大学 | The method of removing magnesium from sodium chloride solution |
| CN1107121A (en) * | 1993-12-08 | 1995-08-23 | 山东潍坊纯碱厂 | Method of preparing refined brine by using bittern |
| CN1370637A (en) * | 2002-04-08 | 2002-09-25 | 黄大军 | Harmless treating and resource utilizing method for waste salt-containing drilling slurry in oil field |
| CN1597519A (en) * | 2004-09-17 | 2005-03-23 | 覃德光 | Method of refining salt solution |
-
2013
- 2013-05-21 CN CN2013101894971A patent/CN103232147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033782A (en) * | 1987-12-30 | 1989-07-12 | 中南工业大学 | A kind of method that purifies sodium sulphate type bittern |
| CN1053045A (en) * | 1989-12-30 | 1991-07-17 | 中南工业大学 | The method of removing magnesium from sodium chloride solution |
| CN1107121A (en) * | 1993-12-08 | 1995-08-23 | 山东潍坊纯碱厂 | Method of preparing refined brine by using bittern |
| CN1370637A (en) * | 2002-04-08 | 2002-09-25 | 黄大军 | Harmless treating and resource utilizing method for waste salt-containing drilling slurry in oil field |
| CN1597519A (en) * | 2004-09-17 | 2005-03-23 | 覃德光 | Method of refining salt solution |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648892A (en) * | 2017-11-10 | 2018-02-02 | 云南省核工业二0九地质大队 | A kind of technique for improving subparticle effect of settling |
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Application publication date: 20130807 |