CN104276600B - A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section - Google Patents
A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section Download PDFInfo
- Publication number
- CN104276600B CN104276600B CN201410471337.0A CN201410471337A CN104276600B CN 104276600 B CN104276600 B CN 104276600B CN 201410471337 A CN201410471337 A CN 201410471337A CN 104276600 B CN104276600 B CN 104276600B
- Authority
- CN
- China
- Prior art keywords
- tank
- washing
- titanium dioxide
- ion
- purge tank
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/0475—Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section, first by press filtration, make the titanium dioxide slurry after surface treatment form filter cake. Subsequently, filter cake is introduced to purge tank, pass into deionized water and stir. After purge tank, be connected film separation system, utilize film to hold back titanium dioxide slurry simultaneously, wash out soluble ion. The dope of film system returns to purge tank, and clear liquid enters ion-exchange mixed bed. The recycled water of mixed bed is back to purge tank, as washings reuse again. Online monitored conductivity instrument is installed after film separation system, and in the time that electrical conductivity in film separation system water outlet reaches regulation requirement, the work of stopper film piece-rate system, carries out secondary press filtration by titanium dioxide slurry in purge tank, and filter cake enters subsequent treatment process. This technological process is succinct, has not only realized the reuse of deionized water, has reduced the consumption of water resource, and titanium dioxide slurry quality is high.
Description
Technical field
The invention belongs to energy-conserving and environment-protective technical field, be specifically related to a kind of simple in structure, titanium dioxide after treatmentSlurry quality is high, has realized the reuse of deionized water, reduced water resource consumption be applied to chlorination legal systemThe device and method of standby titanium dioxide treatment and finishing section washing.
Background technology
Titanium white is not only the Chinese white of excellent performance, and is important industrial chemicals. It is widely used in paintingMaterial, ink, plastics, rubber, papermaking and chemical fibre industry, in addition for enamel, electrical equipment, ELECTRICAL MATERIALSEtc. aspect. The industrialized preparing process of titanium white maturation generally believes to only have sulfuric acid process and chloridising in the world at presentTwo kinds. Chloridising production technology, compared with Production By Sulfuric Acid Process, has that flow process is short, a continuous operation, single seriesThe advantages such as unit scale is large, three waste discharge is few, have huge market potential.
In the post-processed of preparing titanium white through chlorination process powder, the titanium slurries after surface treatment contain a large amount of solubilitiesSalt, traditional press filtration processing, washing operation, the production cycle is long, once the approximately 2.5～3h of time of circulation. ConsumptionThe water yield is large, approximately 20～25m3/ t. Clean result is poor, and the water capacity of filter cake is high, and product quality is general.
Summary of the invention
For the problems referred to above, it is a kind of simple in structure that main purpose of the present invention is to provide, titanium white after treatmentPowder slurry quality is high, has realized the reuse of deionized water, reduced water resource consumption be applied to chloridisingPrepare the device and method of titanium dioxide treatment and finishing section washing.
The present invention solves above-mentioned technical problem by following technical proposals: one is applied to chlorination legal systemThe device of standby titanium dioxide treatment and finishing section washing, described device comprises the first filter press, cast hopper, powerful dividingLoose device, the first agitator tank, purge tank, film separation system, ion exchange system, surge tank, second stirTank, the second filter press.
Ion exchange system comprises ion-exchange mixed bed, sour tank and alkali tank; Acid tank and alkali tank all connect by pipelineBe connected in ion-exchange mixed bed;
The first filter press that titanium dioxide slurry to be processed need is carried out to press filtration is for the first time connected and is fed intake by pipelineBucket, cast hopper connects by pipeline the powerful disperser that the filter cake after the first filter press is pressed is pulled an oar;
Powerful disperser connects by pipeline first stirring that powerful disperser is accomplished fluently to titanium dioxide slurry stirsMix tank, on powerful disperser and the first agitator tank, all have the entrance that pure water enters, the entrance that pure water enters is logicalPiping connects pure water water tank;
The first agitator tank is connected on purge tank by pipeline, on the pipeline between the first agitator tank and purge tankSlurry drawing pump and valve are installed;
Purge tank connects the film separation system of follow-up workshop section by pipeline, dope is also installed on film separation systemReturn to the pipeline of purge tank;
Film separation system connects by pipeline the ion-exchange mixed bed that clear liquid enters, and ion-exchange mixed bed is by pipeRoad is connected on surge tank;
The bottom of purge tank is connected with the second agitator tank and the second filter press by pipeline;
Recycled water in ion exchange system flow to purge tank by back of pipeline.
In preferred specific embodiment of the present invention, mechanical agitation oar is set in described purge tank,Rotating speed is 50～150r/min.
In preferred specific embodiment of the present invention, the film core in described film separation system is potteryFilm, pvdf membrane or SIC membrane module, membrane aperture is 0.01～1um.
In preferred specific embodiment of the present invention, described the first filter press and the second filter press areDiaphragm filter press.
In preferred specific embodiment of the present invention, described ion-exchange mixed bed is that filler is by H typeIon-exchange mixed bed with OH type ion exchange resin formation.
A method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section, described method comprises as followsStep:
Step (1): first the titanium dioxide slurry after surface treatment is carried out to press filtration in filter press;
Step (2): the filter cake after press filtration in step (1), through cast hopper, is added in powerful disperser,Pull an oar;
Step (3): ready-made titanium dioxide slurry in step (2) is introduced to agitator tank, stir in agitator tankDevice fully mixes with deionized water under stirring, and forms the clear titanium dioxide slurry after dilution;
Step (4): the clear titanium dioxide slurry in step (3) is introduced to purge tank by pump off and on and clean,And in purge tank, drop into deionized water;
Step (5): the slurry in step (4) is introduced to film separation system off and on by pump;
Step (6): the dope out from film separation system in step (5) is returned in purge tank, clearSend into ion-exchange mixed bed night; By [H] type [OH] type zwitterion resin, dissolubility salt is wherein taken offSalt processing, forms recycled water and introduces in surge tank; Purified liquor outlet place at film separation system arranges an electrical conductivityMonitor, through cleaning after a while, clear liquid electrical conductivity is reduced to after required index, and titanium dioxide slurry is describedMaterial cleans up; The slurry cleaning up in purge tank is introduced in the second follow-up agitator tank, and utilizedTwo filter presses, carry out press filtration operation, and filter cake up to standard after washing is sent into subsequent treatment workshop section.
In preferred specific embodiment of the present invention, described monitored conductivity instrument is electrical conductivity settingIt is the monitored conductivity instrument of 50～80us/cm.
In preferred specific embodiment of the present invention, in described step (6) through after a whileConcrete time range be 20-40 minute.
Positive progressive effect of the present invention is: the present invention processes and ion-exchange mixed bed by press filtration and filmThe combination of three kinds of techniques, improve product quality, reduce the consumption of production cycle and water for cleaning amount, logicalLater the press filtration of phase operation, makes product reach the requirement of subsequent treatment.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Fig. 1 is overall structure schematic diagram of the present invention, as shown in Figure 1: the device in the present invention comprises: theOne filter press 1, cast hopper 2, powerful disperser 3, the first agitator tank 4, purge tank 5, film separation system 6,Ion exchange system, surge tank 10, the second agitator tank 11 and the second filter press 12.
Ion exchange system comprises ion-exchange mixed bed 7, sour tank 8 and alkali tank 9; Acid tank 8 and alkali tank 9 are all logicalPiping is connected in ion-exchange mixed bed 7.
The first filter press 1 that titanium dioxide slurry to be processed need is carried out to press filtration for the first time connects throwing by pipelineHopper 2, cast hopper 2 connects by pipeline the brute force dispersion that the filter cake after the first filter press 1 is pressed is pulled an oarDevice 3.
Powerful disperser 3 by pipeline connect powerful disperser 3 is accomplished fluently to titanium dioxide slurry stirs theOne agitator tank 4, all has the entrance that pure water enters on powerful disperser 3 and the first agitator tank 4, and pure water entersEntrance connect pure water water tank by pipeline.
The first agitator tank 4 is connected on purge tank 5 by pipeline, between the first agitator tank and purge tank 5Slurry drawing pump and valve are installed on pipeline; Purge tank 5 connects the film segregative line of follow-up workshop section by pipelineSystem 6, is also provided with dope on film separation system 6 and returns the pipeline of purge tank 5; Film separation system 6 is by pipeRoad connects the ion-exchange mixed bed 7 that clear liquid enters, and ion-exchange mixed bed 7 is connected to surge tank 10 by pipelineOn; The bottom of purge tank 5 is connected with the second agitator tank 11 and the second filter press 12 by pipeline; Ion-exchangeRecycled water in system flow to purge tank 5 by back of pipeline.
In order to reach better cleaning performance, the interior mechanical agitation oar that arranges of purge tank 5, rotating speed is 50～150 r/min。
Film core in film separation system 6 is elected ceramic membrane as, pvdf membrane or SIC membrane module, and membrane aperture is 0.01～1um。
In the present invention, the first filter press 1 and the second filter press 12 are generally elected diaphragm filter press as.
The ion-exchange mixed bed that ion-exchange mixed bed 7 is made up of H type and OH type ion exchange resin for filler.
A method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section, described method comprises as followsStep:
Step (1): first the titanium dioxide slurry after surface treatment is carried out to press filtration in filter press;
Step (2): the filter cake after press filtration in step (1), through cast hopper, is added in powerful disperser,Pull an oar;
Step (3): ready-made titanium dioxide slurry in step (2) is introduced to agitator tank, stir in agitator tankDevice fully mixes with deionized water under stirring, and forms the clear titanium dioxide slurry after dilution;
Step (4): the clear titanium dioxide slurry in step (3) is introduced to purge tank by pump off and on and clean,And in purge tank, drop into deionized water;
Step (5): the slurry in step (4) is introduced to film separation system 6 off and on by pump;
Step (6): the dope out from film separation system 6 in step (5) is returned in purge tank 5,The stillness of night is sent into ion-exchange mixed bed 7; By [H] type [OH] type zwitterion resin, dissolubility salt is wherein enteredRow desalting processing, forms recycled water and introduces in surge tank 10; And according to the folding of height of liquid level control valve, will store upIn flow container, recycled water is sent in purge tank; Purified liquor outlet place at film separation system 6 arranges a monitored conductivityInstrument, through after a while, generally elect 20-40 minute as the cleaning of (according to preliminary estimation for half an hour), clear liquidElectrical conductivity is reduced to after required index, illustrates that titanium dioxide slurry cleans up that (above cleaning process is continuous behaviourMake process); The slurry cleaning up in purge tank 5 is introduced in follow-up agitator tank 11, and utilized the second pressureFilter 12 (membrane pressure filter), carries out press filtration operation, and filter cake up to standard after washing is sent into subsequent treatment workshop section.
In specific embodiment of the present invention, described monitored conductivity instrument is that electrical conductivity is set to 50～80The monitored conductivity instrument of us/cm.
Below specific embodiment:
First, titanium slurry is introduced to diaphragm filter press 1, carry out press filtration operation, charging 12min, filter is pressedFor 0.6MPa, keep 3min. The filter cake forming, through cast hopper 2, is added in powerful disperser 3,The operation of pulling an oar. Titanium dioxide slurry is introduced in agitator tank 4, and under mechanical agitator stirs, introducing is goneIonized water, further mixes, dilutes. After diluting, titanium dioxide slurry batch (-type) is introduced purge tank 5,And add a certain amount of deionized water. Slurry in purge tank is introduced to the film separation system 6 (work of ceramic membranePressure reduction is 50KPa, and filtering accuracy is 0.1um), the dope that produces returns in purge tank 5, the stillness of night send into fromSon exchange mixed bed 7, carries out desalting processing by [H] type [OH] type zwitterion resin to dissolubility salt wherein,Form recycled water and introduce in surge tank 10, and according to the folding of height of liquid level control valve, by recycled water in fluid reservoirSend in purge tank. At the purified liquor outlet place of film separation system 6, a monitored conductivity instrument is set, through one sectionThe cleaning of time (being half an hour according to preliminary estimation), clear liquid electrical conductivity is reduced to after required index, and titanium white is describedPowder slurry cleans up (above cleaning process is continued operation process). By the slurry cleaning up in purge tank 5Material is introduced in follow-up agitator tank 11, and utilizes membrane pressure filter 12, carries out press filtration operation, will after washing, reachMark filter cake is sent into subsequent treatment workshop section.
More than show and described general principle of the present invention and principal character and advantage of the present invention. The industryTechnical staff should understand, the present invention is not restricted to the described embodiments, in above-described embodiment and descriptionThat describes just illustrates principle of the present invention, without departing from the spirit and scope of the present invention, and the present inventionAlso have various changes and modifications, these changes and improvements all fall in the claimed scope of the invention, thisInventing claimed scope is defined by appending claims and equivalent thereof.
Claims (8)
1. a device that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section, is characterized in that: instituteState device and comprise that the first filter press, cast hopper, powerful disperser, the first agitator tank, purge tank, film separateSystem, ion exchange system, surge tank, the second agitator tank, the second filter press;
Ion exchange system comprises ion-exchange mixed bed, sour tank and alkali tank; Acid tank and alkali tank all connect by pipelineBe connected in ion-exchange mixed bed;
The first filter press that titanium dioxide slurry to be processed need is carried out to press filtration is for the first time connected and is fed intake by pipelineBucket, cast hopper connects by pipeline the powerful disperser that the filter cake after the first filter press is pressed is pulled an oar;
Powerful disperser connects by pipeline first stirring that powerful disperser is accomplished fluently to titanium dioxide slurry stirsMix tank, on powerful disperser and the first agitator tank, all have the entrance that pure water enters, the entrance that pure water enters is logicalPiping connects pure water water tank;
The first agitator tank is connected on purge tank by pipeline, on the pipeline between the first agitator tank and purge tankSlurry drawing pump and valve are installed;
Purge tank connects the film separation system of follow-up workshop section by pipeline, dope is also installed on film separation systemReturn to the pipeline of purge tank;
Film separation system connects by pipeline the ion-exchange mixed bed that clear liquid enters, and ion-exchange mixed bed is by pipeRoad is connected on surge tank;
The bottom of purge tank is connected with the second agitator tank and the second filter press by pipeline;
Recycled water in ion exchange system flow to purge tank by back of pipeline.
2. the device that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 1,It is characterized in that: mechanical agitation oar is set in described purge tank, and rotating speed is 50～150r/min.
3. the device that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 1,It is characterized in that: the film core in described film separation system is ceramic membrane pvdf membrane or SIC membrane module, fenestraFootpath is 0.01～1um.
4. the device that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 1,It is characterized in that: described the first filter press and the second filter press are diaphragm filter press.
5. the device that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 1,It is characterized in that: described ion-exchange mixed bed is the ion that filler is made up of H type and OH type ion exchange resinExchange mixed bed.
6. a method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section, is characterized in that: instituteThe method of stating comprises the steps:
Step (1): first the titanium dioxide slurry after surface treatment is carried out to press filtration in filter press;
Step (2): the filter cake after press filtration in step (1), through cast hopper, is added in powerful disperser,Pull an oar;
Step (3): ready-made titanium dioxide slurry in step (2) is introduced to agitator tank, stir in agitator tankDevice fully mixes with deionized water under stirring, and forms the clear titanium dioxide slurry after dilution;
Step (4): the clear titanium dioxide slurry in step (3) is introduced to purge tank by pump off and on and clean,And in purge tank, drop into deionized water;
Step (5): the slurry in step (4) is introduced to film separation system off and on by pump;
Step (6): the dope out from film separation system in step (5) is returned in purge tank, clearLiquid is sent into ion-exchange mixed bed; By [H] type [OH] type zwitterion resin, dissolubility salt is wherein taken offSalt processing, forms recycled water and introduces in surge tank; Purified liquor outlet place at film separation system arranges an electrical conductivityMonitor, through cleaning after a while, clear liquid electrical conductivity is reduced to after required index, and titanium dioxide slurry is describedMaterial cleans up; The slurry cleaning up in purge tank is introduced in the second follow-up agitator tank, and utilizedTwo filter presses, carry out press filtration operation, and filter cake up to standard after washing is sent into subsequent treatment workshop section.
7. the method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 6,It is characterized in that: described monitored conductivity instrument is the monitored conductivity instrument that electrical conductivity is set to 50～80us/cm.
8. the method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section according to claim 6,It is characterized in that: the concrete time range through after a while in described step (6) is 20-40 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471337.0A CN104276600B (en) | 2014-09-16 | 2014-09-16 | A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471337.0A CN104276600B (en) | 2014-09-16 | 2014-09-16 | A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104276600A CN104276600A (en) | 2015-01-14 |
| CN104276600B true CN104276600B (en) | 2016-05-18 |
Family
ID=52252018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410471337.0A Active CN104276600B (en) | 2014-09-16 | 2014-09-16 | A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104276600B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152207B (en) * | 2015-07-31 | 2017-07-25 | 上海安赐环保科技股份有限公司 | A kind of efficient sulfuric acid method titanium pigment water wash system and its washing process |
| CN106587121A (en) * | 2016-12-21 | 2017-04-26 | 上海安赐环保科技股份有限公司 | Water washing device and water washing method applied to washing process of aluminum hydroxide powder |
| CN111135615B (en) * | 2019-12-30 | 2022-04-26 | 宜宾天原海丰和泰有限公司 | Method for recovering post-treatment filtrate of titanium dioxide |
| CN114225545B (en) * | 2021-12-24 | 2022-07-15 | 清远市嘉禾稀有金属有限公司 | Acid-soluble slag backwashing equipment and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201578964U (en) * | 2009-10-27 | 2010-09-15 | 攀枝花东方钛业有限公司 | Venturi scrubber for scrubbing calcined tail gas of titanium white by sulfuric acid process |
| CN102424418A (en) * | 2011-09-08 | 2012-04-25 | 湘潭大学 | Method for continuous filtration washing of hydrated titanium dioxide |
| CN103043714A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Tubular membrane device applicable to titanium dioxide washing and washing method |
| CN204173931U (en) * | 2014-09-16 | 2015-02-25 | 上海安赐机械设备有限公司 | A kind of device being applied to the washing of preparing titanium white through chlorination process flour flow design workshop section |
-
2014
- 2014-09-16 CN CN201410471337.0A patent/CN104276600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201578964U (en) * | 2009-10-27 | 2010-09-15 | 攀枝花东方钛业有限公司 | Venturi scrubber for scrubbing calcined tail gas of titanium white by sulfuric acid process |
| CN102424418A (en) * | 2011-09-08 | 2012-04-25 | 湘潭大学 | Method for continuous filtration washing of hydrated titanium dioxide |
| CN103043714A (en) * | 2012-12-31 | 2013-04-17 | 上海安赐机械设备有限公司 | Tubular membrane device applicable to titanium dioxide washing and washing method |
| CN204173931U (en) * | 2014-09-16 | 2015-02-25 | 上海安赐机械设备有限公司 | A kind of device being applied to the washing of preparing titanium white through chlorination process flour flow design workshop section |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104276600A (en) | 2015-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104276600B (en) | A kind of device and method that is applied to the washing of preparing titanium white through chlorination process powder treatment and finishing section | |
| CN103030175B (en) | Device and method applied to metatitanic acid washing room | |
| WO2020082916A1 (en) | Novel sulfuric acid process titanium oxide water washing process and system | |
| CN101972584A (en) | Device and process for washing phosphoric acid tail gas and cogenerating sodium fluosilicate | |
| CN102923794A (en) | Method for continuously compounding high-purity alkali nickel carbonate | |
| CN204173931U (en) | A kind of device being applied to the washing of preparing titanium white through chlorination process flour flow design workshop section | |
| CN107572747B (en) | Red mud treatment process and treatment system in alumina production | |
| CN109179461A (en) | A kind of low sodium boehmite and preparation method thereof, device | |
| CN103848422B (en) | Activated carbon purging system and method thereof | |
| CN215975001U (en) | Water recycling system for preparing sulfuric acid method titanium dioxide calcining seed crystal | |
| CN202924745U (en) | Washing and dewatering device for white carbon black synthetic fluid | |
| CN205235874U (en) | Sesame oil filters agitating unit | |
| CN209306965U (en) | A kind of water-saving preparation system of tertiary cathode material hydroxide precursor | |
| CN201109716Y (en) | Control system for alkali liquor preparing system | |
| CN103554952B (en) | Device for recycling mixed alkali from indigo-dyed product | |
| CN207243884U (en) | Biological enzyme purification and separation device | |
| CN102910636B (en) | Cleaning and dewatering device for white carbon black synthetic fluid | |
| CN206244428U (en) | A kind of removal of impurities device for improving quality of industry by-product gypsum | |
| CN109678185A (en) | A kind of devices and methods therefor for crude liquid refining in alumina producing | |
| CN212894153U (en) | Synthetic strong brine processing system | |
| CN215842930U (en) | Alkali washing neutralization system of dimethyl concentrated acid hydrolysis system | |
| CN105483706B (en) | A kind of printed circuit board acid, alkaline copper chloride etching waste liquid recycling device and its method | |
| CN211487656U (en) | 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid apparatus for producing | |
| CN213050143U (en) | Diluting device for dissolving out ore pulp in alumina production | |
| CN203668290U (en) | Device for recycling mixed alkalis from indigo blue products |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Applicant after: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY CO., LTD. Address before: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Applicant before: Shanghai Anhorn Mechanical Equipment Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |