CN205973835U - Utilize secondary salt mud production light calcium carbonate's device - Google Patents
Utilize secondary salt mud production light calcium carbonate's device Download PDFInfo
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- CN205973835U CN205973835U CN201620811736.1U CN201620811736U CN205973835U CN 205973835 U CN205973835 U CN 205973835U CN 201620811736 U CN201620811736 U CN 201620811736U CN 205973835 U CN205973835 U CN 205973835U
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Abstract
The utility model relates to an apparatus for producing of calcium carbonate, especially an utilize secondary salt mud production light calcium carbonate's device. Include and fall the chlorine bucket, the stiff ware, the air separator, the sedimentation tank falls the secondary salt mud export of chlorine bucket and is connected with the secondary salt mud inlet of stiff ware, and the secondary salt mud stiff thick liquid export of stiff ware is connected with centrifuge's inlet, and centrifuge's the light calcium carbonate wet stock discharge port and the feed inlet of desiccator are connected, and the dry powder export of desiccator is connected with the pan feeding mouth of flour mill and/or air separator. Compared with the prior art, fall chlorine bucket, stiff ware and realize that chlorine falls in secondary salt mud, has avoided the high energy consumption centrifugation to fall the chlorine plant operation, the adoption is fallen chlorine bucket, stiff ware and is carried out the stiff processing to secondary salt mud earlier, has improved secondary salt mud dewatering equipment throughput, utilizing centrifuge to replace the pressure filter, having reduced the wet stock and connect a phenomenon, the wet stock dispersibility improves, adopt flour mill, air separator coordinated production, make product granularity and distribution controllability improve.
Description
Technical field
This utility model is related to a kind of process units of Calcium Carbonate, and particularly one kind produces lightweight carbonic acid using secondary brine sludge
The device of calcium.
Background technology
A large amount of brine sludges are produced during ammonia-soda process soda manufacture.Brine sludge is directly drained as solid waste, on the one hand causes solid
Solid accumulation at discharge for the shape thing, affects surrounding enviroment, so that mass efficient resource is wasted simultaneously, be not inconsistent joint
Source recycles this national policy.Recycle for realizing the maximum resource of brine sludge garbage, minority enterprise is to change
Salt refining technique is improved, and crude brine is carried out with demagging, deliming step-by-step processing, so that brine sludge is categorized into containing magnesium hydroxide, sulfur
Brine sludge of multiple solid content such as sour calcium, biological sludge in industrial and composition are the secondary brine sludge of Calcium Carbonate substantially entirely, and as front
Carry, produce precipitated calcium carbonate using secondary brine sludge.
Secondary brine sludge is pasty material at the beginning of being formed, and produces precipitated calcium carbonate using secondary brine sludge, secondary brine sludge need to be entered
Row dehydration, drying and processing, and form the light calcium carbonate product meeting user's request through granularity process.In ammonia-soda process soda industry
Middle using secondary brine sludge produce precipitated calcium carbonate technology applied, its production technology more adopt " brine sludge filter pressing-centrifugal rinsing-
The method of drying-pulverizing-screening-surface-active-treatment ", produces special carbonate of lime, plastic filler precipitated calcium carbonate.Although
Technological process is relatively reasonable, but in device functions of the equipments take less reasonable：Brine sludge after filter pressing becomes bulk, is unfavorable for brine sludge
Washing fall chlorine and follow-up dry, sorting, and filter pressing, centrifugal rinsing plant running cost are all higher；Using " pulverizing-screening " technique
Flow process, for processing thin material, effect is got half the result with twice the effort, and Task-size Controlling difficulty is very big；The extremely low lightweight carbon of screening granularity
The phenomenon of mesh blocking, during sour calcium powder material, easily occurs, affects screening effect.
Utility model content
The purpose of this utility model is to provide the utilization that a kind of system energy consumption is low, wet stock particle dispersion is good secondary salt
Mud produces the device of precipitated calcium carbonate.
This utility model adopts the following technical scheme that：
A kind of using secondary brine sludge produce precipitated calcium carbonate device, include drop chlorine bucket, thickener, winnower, sedimentation tank,
The secondary brine sludge outlet of fall chlorine bucket is connected with the secondary brine sludge inlet of thickener, the secondary brine sludge thick slurry outlet of thickener
It is connected with the inlet of centrifuge, the precipitated calcium carbonate wet stock outlet of centrifuge is connected with the charging aperture of drying machine, be dried
The dry powder outlet of machine is connected with the feeding mouth of flour mill and/or winnower.
This device compared with prior art, has the advantage that, 1）, adopt static device（Fall chlorine bucket, thickener）Realize
Chlorine drops in secondary brine sludge, it is to avoid the use of high energy consumption centrifugation fall chlorine equipment；2）, adopt static device（Fall chlorine bucket, thickener）First
Stiff process is carried out to secondary brine sludge, improves secondary brine sludge dehydration equipment disposal ability；3）, using centrifuge replace filter pressing
Machine, reduces wet stock and connects a phenomenon, so that wet stock dispersibility is improved；4）, adopt flour mill, winnower coordinated production, make product
Product granularity and its distribution controllability improve.
The preferred version that this device is adopted is：
The offgas outlet of drying machine is connected with the air inlet of scrubbing tower；The filtrate (liquid of centrifuge and the scrubbing tower of scrubbing tower
Inlet connects；The cleaning mixture outlet of scrubbing tower is connected with the import of sedimentation tank.
The underflow outlet of sedimentation tank is connected with the inlet of centrifuge, the purified liquor outlet of sedimentation tank respectively with washing of chlorine bucket is dropped
Wash wastewater outlet to connect with the purified liquor outlet of thickener.
It is provided with fresh water import on fall chlorine bucket, centrifuge is provided with steam inlet and condensation-water drain.
This new production method adopts the following technical scheme that：
Production method, is carried out as follows：
, by secondary brine sludge raw slurry be delivered to fall chlorine bucket in, using fresh water it is carried out drop chlorine remove impurity process, drop chlorine
Secondary salt slurry liquid after remove impurity is used as subsequent sedimentation stiff and processes raw material, and the washess that washing process is formed return and produce system
System；
, the secondary salt slurry liquid after fall chlorine remove impurity enter thickener and carry out settling stiff and process, realize secondary brine sludge fall
Enrichment, thick slurry is used as the raw material producing precipitated calcium carbonate wet stock, and clear liquid returns production system；
, the secondary salt mud after enrichment enter centrifuge and carry out solid-liquid separation, it is light that the wet stock that centrifugation is formed is used as production
The raw material of matter calcium carbonate dry powder, the filtrate of formation is used as the washings of subsequent handling scrubbing tower；
, the wet mash that formed of secondary salt mud centrifugation enters drying machine is dried, and forms dry mash；Dried
The thermal source of journey is steam, and the condensed water being formed after steam heat-exchanging returns boiler, for preparing steam again；Precipitated calcium carbonate dry powder
Material goes next procedure, and the dust that dry run is formed enters scrubbing tower, carries out cleaning dust, shape with the filtrate that centrifugation is formed to it
Through sedimentation tank precipitation process, underflow material returns in centrifuge the cleaning mixture becoming, the washess of clear liquid and fall chlorine formation, stiff
The clear liquid being formed together returns production system；
, secondary brine sludge dry mash enter winnower system, carry out cracking and sorting；Or entrance flour mill, carry out at grinding
Reason；Or the aidr bells blast system that is partially in secondary brine sludge carries out cracking and sorting, another part enters flour mill and carries out grinding process.
, the finished product after broken and after grinding is packed.
This production method, first carries out dropping chlorine remove impurity, stiff, solid-liquid separation process, after solving filter pressing in prior art
Brine sludge becomes the problems such as bulk, brine sludge filter pressing and centrifugal rinsing process operation high cost；Adopt selecting crude drugs with winnower, two kinds of technology of grinding simultaneously,
Solve that " pulverize-screening " effect is poor, the difficult control of granularity, screening installation easy network blocking the problems such as.Compared with prior art, this method
Have the advantages that system energy consumption is low, low production cost, particle size range are controlled, good product quality.
The preferred version of this novel method is：
Described stepIn, the thermal source of drying machine drying course is steam, and the condensed water being formed after steam heat-exchanging returns pot
Stove, for preparing steam again.
Finished product after broken and the finished product after grinding are packed respectively, or broken after finished product and the finished product mixing bag after grinding
Dress.
StepIn, adjust the treating capacity of separator and flour mill respectively, realize the adjustment of product granularity scope.
Brief description
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment describes this utility model in detail：
A kind of device producing precipitated calcium carbonate using secondary brine sludge, referring to accompanying drawing 1, in figure：Fall chlorine bucket 1, thickener 2,
Centrifuge 3, drying machine 4, flour mill 5, winnower 5, scrubbing tower 7, sedimentation tank 8.
2 two salt mud inlets of secondary salt slurry outlet and thickener of fall chlorine bucket 1 are corresponding to be connected；The two of thickener 2
Secondary brine sludge thick slurry outlet and centrifuge 3（Using siphon scraper type structure centrifuge）Inlet is corresponding to be connected；Centrifuge 3
The connection corresponding with the charging aperture of drying machine 4 of precipitated calcium carbonate wet stock outlet, the filtrate (liquid of centrifuge 3 and scrubbing tower 8
Cleaning mixture import is corresponding to be connected；The dry mash outlet of drying machine 4（Dry mash exports equipped with threeway valve arrangement）With flour mill 5 and/
Or the corresponding connection of feeding mouth of winnower 6, the offgas outlet of drying machine 4 is corresponding with the air inlet of scrubbing tower 7 to be connected, and drying machine is also
There are steam inlet, condensation-water drain, be respectively used to introduce heat source stream and discharge steam condensate (SC)；The cleaning mixture of scrubbing tower 7 goes out
Mouth is corresponding with the import of sedimentation tank 8 to be connected；The underflow outlet of sedimentation tank 8 is corresponding with the inlet of centrifuge 3 to be connected, sedimentation tank
8 purified liquor outlet is interconnected with the washess outlet of fall chlorine bucket 1, the purified liquor outlet of thickener 2.
Fall chlorine bucket 1 is used for secondary salt mud being carried out drop chlorine process；Thickener 2 is used for the secondary salt mud after fall chlorine is entered
Row stiff is processed, and secondary salt mud is divided into the secondary brine sludge enrichment serosity that can be used for producing precipitated calcium carbonate and is used for reclaiming
The clear liquid producing；Centrifuge 3 is used for carrying out solid-liquid separation process to secondary brine sludge enrichment serosity, is split into precipitated calcium carbonate wet
Material and the filtrate that need to reclaim for producing；Drying machine 4 is used for being dried process to precipitated calcium carbonate wet stock；Scrubbing tower 7
Using countercurrent washing method（Scrubbing tower 7 adopts bottom feed, the structure of top spray, adverse current efficiency high）To wet stock dry run
The dust-containing tail gas of middle formation carry out dust removal process；Sedimentation tank 8 is used for scrubbing-and-drying unit being that the cleaning mixture that it forms carries out solid-liquid
Separating treatment；Flour mill 5 and winnower 6, carry out granularity and its distribution for adjusting precipitated calcium carbonate dry material, are formed and meet visitor
The light calcium carbonate product of family demand.
A kind of method that utilization said apparatus system produces precipitated calcium carbonate, is carried out as follows：
Secondary brine sludge raw slurry（Flow is approximately 12m3/ h, sedimentation rate about 95%, CaCO3Mass content about 23%, NaCl contains
Amount 103tt about）Enter in fall chlorine bucket 1, using fresh water, it carries out dropping chlorine remove impurity process, the secondary salt slurry liquid after fall chlorine remove impurity
（Flow is 35m3/ h, sedimentation rate about 40% about, CaCO3Mass content 10% about, NaCl content 14.5tt）As subsequent sedimentation
Stiff processes raw material, and the washess that washing process is formed return production system.
Secondary salt slurry liquid after fall chlorine remove impurity enters thickener 2 and carries out settling stiff process, realizes secondary brine sludge fall
Enrichment, thick slurry（Flow is 12m3/ h, sedimentation rate 88%, CaCO3Mass content 26%, NaCl content 14.5tt）It is used as production
The raw material of precipitated calcium carbonate wet stock, clear liquid returns production system.
Secondary salt mud after enrichment enters siphon scraper centrifugal machine 3 and carries out solid-liquid separation, the wet stock that centrifugation is formed（Wet
Inventory is 6t/h, aqueous 15%, NaCl content 14.5tt）It is used as the raw material producing precipitated calcium carbonate dry mash, the filtrate of formation
Washings as subsequent handling scrubbing tower.
The wet mash that secondary salt mud centrifugation is formed enters drying machine 4 and is dried, and forms dry mash（Dry doses
It is 5t/h, NaCl mass content 0.3%, other impurities content 2.5%）；The thermal source of drying course is steam（Flow is 3t/h, pressure
Power is 0.65MPa, and temperature is 225 DEG C）The condensed water being formed after steam heat-exchanging（Flow is 3t/h, and pressure is 0.65MPa, temperature
For 225 DEG C）Return boiler, for preparing steam again；Precipitated calcium carbonate dry mash goes next procedure, the powder that dry run is formed
Dirt enter scrubbing tower 7, with centrifugation formed filtrate it is carried out with cleaning dust, the cleaning mixture of formation through sedimentation tank 8 precipitation process,
Underflow material returns in siphon scraper centrifugal machine 3, and the washess that clear liquid is formed with fall chlorine, the clear liquid of stiff formation together return
Production system.
According to the needs producing product, secondary brine sludge dry mash is partly into winnower system, and it is carried out with broken wind
Choosing, forms selecting crude drugs with winnower product；Another part enters flour mill system, and it is carried out with grinding process, forms mill product.Or, two
Secondary salt mud dry powder only enters aidr bells blast system, and it is carried out with broken selecting crude drugs with winnower, or, secondary salt mud dry powder only enters powder flour mill system
System, carries out grinding process.
The treating capacity of two winnower 6 and/or flour mill 5 can be adjusted according to customer demand, realize product granularity scope
Adjustment, packs to the product being formed.
Claims (4)
1. a kind of using secondary brine sludge produce precipitated calcium carbonate device, include drop chlorine bucket, thickener, winnower, sedimentation tank, its
It is characterised by：The secondary brine sludge outlet of fall chlorine bucket is connected with the secondary brine sludge inlet of thickener, and the secondary brine sludge of thickener is thick
Thick serum outlet is connected with the inlet of centrifuge, the precipitated calcium carbonate wet stock outlet of centrifuge and the charging aperture of drying machine
Connect, the dry powder outlet of drying machine is connected with the feeding mouth of flour mill and/or winnower.
2. according to claim 1 using secondary brine sludge produce precipitated calcium carbonate device it is characterised in that：Drying machine
Offgas outlet is connected with the air inlet of scrubbing tower；The filtrate (liquid of centrifuge is connected with the scrubbing tower inlet of scrubbing tower；Washing
The cleaning mixture outlet of tower is connected with the import of sedimentation tank.
3. according to claim 1 using secondary brine sludge produce precipitated calcium carbonate device it is characterised in that：Sedimentation tank
Underflow outlet is connected with the inlet of centrifuge, purified liquor outlet washess outlet and the stiff with fall chlorine bucket respectively of sedimentation tank
The purified liquor outlet connection of device.
4. according to claim 1 using secondary brine sludge produce precipitated calcium carbonate device it is characterised in that：On fall chlorine bucket
It is provided with fresh water import, centrifuge is provided with steam inlet and condensation-water drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620811736.1U CN205973835U (en) | 2016-07-29 | 2016-07-29 | Utilize secondary salt mud production light calcium carbonate's device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620811736.1U CN205973835U (en) | 2016-07-29 | 2016-07-29 | Utilize secondary salt mud production light calcium carbonate's device |
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| Publication Number | Publication Date |
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| CN205973835U true CN205973835U (en) | 2017-02-22 |
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| CN201620811736.1U Active CN205973835U (en) | 2016-07-29 | 2016-07-29 | Utilize secondary salt mud production light calcium carbonate's device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044822A (en) * | 2016-07-29 | 2016-10-26 | 唐山三友化工股份有限公司 | Device and production method for producing light calcium carbonate by using secondary salt slurry |
-
2016
- 2016-07-29 CN CN201620811736.1U patent/CN205973835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044822A (en) * | 2016-07-29 | 2016-10-26 | 唐山三友化工股份有限公司 | Device and production method for producing light calcium carbonate by using secondary salt slurry |
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| GR01 | Patent grant |