CN203079706U - Device applied to metatitanic acid washing working section - Google Patents
Device applied to metatitanic acid washing working section Download PDFInfo
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- CN203079706U CN203079706U CN 201220748647 CN201220748647U CN203079706U CN 203079706 U CN203079706 U CN 203079706U CN 201220748647 CN201220748647 CN 201220748647 CN 201220748647 U CN201220748647 U CN 201220748647U CN 203079706 U CN203079706 U CN 203079706U
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- metatitanic acid
- acid
- storage tank
- washing
- membrane separation
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Abstract
The utility model relates to a device applied to a metatitanic acid washing working section. The device comprises a filtering machine, a pulping pool, a metatitanic acid washing membrane separation system and a waste acid recovery membrane separation system. Metatitanic acid slurry after hydrolysis is filtered by the filtering machine, then a filter cake is unloaded and enters a stirring kettle, water is added for stirring and pulping, and filtrate after filtration enters a membrane separation and recovery system for recovering metatitanic acid granules in waste acid. Metatitanic acid after pumping enters a material storage tank and is conveyed to a metatitanic acid membrane separation system via a pump for performing concentration, the water is added into a liquid storage tank after concentration for washing, the concentration is performed again, and the two steps are repeated for performing water washing process till the content of metal ions separated from clear liquid meets the requirements. The device disclosed by the utility model adopts a way of combining filtration with membrane separation, can effectively reduce the impurity content in the metatitanic acid granules and improve the quality of a titanium dioxide product, and has the advantages of high retention rate of solid granules, low cost and simplicity in operation.
Description
Technical field
The utility model relates to a kind of device, a kind of washing process that provides a kind of filtration to combine with membrane sepn at the defective that has the existence of titanium dioxide washing room device and technology now is provided, by the pressure filter press filtration, remove the denseer spent acid of 22%-25% that wherein contains, the slurry that obtains adds water and enters into the device that is applied to the metatitanic acid washing room that membrane separation unit is washed washing.
Background technology
Titanium dioxide is as a kind of white inorganic pigment, has nontoxicly, and best whiteness and luminance brightness are the best a kind of white pigments of performance in the world at present, are widely used in industries such as coating, plastics, papermaking, printing-ink, chemical fibre, rubber and makeup.The Production By Sulfuric Acid Process Technology adopts the ilmenite of the vitriol oil decomposition of heat through selected pulverizing, is the vitriol mixing solutions that reductive agent makes titanium, ferrous iron and other metal with the iron powder, is commonly called as titanium liquid.At the titanic acid colloids is under the inducing of nucleus, and dense titanium liquid minute-pressure hydrolysis is generated hydrated titanium dioxide, is commonly called as metatitanic acid.Metatitanic acid after salt is handled is through filtering, and calcining makes coarse particles titanium dioxide, promptly gets titanium dioxide through pulverizing, packing.
Industrial employing filter cake washing method is removed various soluble impurities in the metatitanic acid, along with the rising of water washing process pH.Iron is adsorbed in the metatitanic acid with the form of ferric hydroxide precipitate and is difficult to remove.During high-temperature calcination, ironic hydroxide is transformed into the red iron oxide that has with the identical microlitic structure of rutile titanium dioxide type, when the content of iron is higher than 30 * 10
-31 o'clock, rutile titanium dioxide presented yellow, and iron level is higher than 90 * 10
-3, can influence the whiteness of anatase titanium dioxide at 1 o'clock.The iron of trace can form active target spot, influences the performance of titanium dioxide as pigment.In order to remove Fe
2+, also need the metatitanic acid filter cake making beating back adding vitriol oil and reductive agent are carried out secondary or repeatedly washing.
Industrial general employing leaf-type vacuum filter filters, and material forms filter cake on leaf filter, the into water washing trough of slinging washing.Shortcoming is that filter cake thickness needs control, approaches precipitation by metallic ion acceleration when causing production efficiency reduction and washing excessively; The too thick filter cake crack performance that then causes, effect is familiar with in influence, if adjacent filter cake links together, then can't washes clean.And because of the filter cloth precision is lower, also have the metatitanic acid particle in the filtrate after filtering and washing, it is heavier to cause reclaiming load.
Industrial also have the tubular filter of employing to filter, same, filter in the initial stage filtrate and contain the metatitanic acid particle, and the shortcoming of tubular filter is to be difficult to maintenance when filter cloth breaks.
The industrial method of whizzer that adopts is in addition washed, whizzer comes out at every turn be contain 40%-50% contain the stereoplasm material, because wherein wrap up by sulfate ion, therefore need be through making beating washing repeatedly, operation labour intensity is big, and solid content reaches 4%-5% in the washings, bigger to the production cost influence, and water loss is big, and the later stage also needs the plain boiled water of a large amount of generations is recycled, and investment is big.
It is agglomerating that this filter type of formation filter cake makes that also the metatitanic acid ionic is cross-linked with each other, a spot of Fe (OH)
3With a spot of Fe (OH)
2Easily form ol bridge on the metatitanic acid particle, separation efficiency is lower than the crossflow membrane filtration system.
Industrial employing CN strainer concentrates the plain boiled water of washing generation and the spent acid of press filtration generation, and existence is taken up an area of big, the facility investment height, and the problem of metatitanic acid particle loss, and need not timing replacing filler.
When using membrane separation unit to carry out washing and filtering separately, separating effect is better, but initial sulfuric acid concentration is higher, causes the subsequent wash water yield bigger, and is not easy to the vitriolic recovery.
Utilize filtration washing to combine, reach titanium dioxide particulate circulation washing with " screening " mechanism of film.Use membrane separation technique to carry out the washing of titanium dioxide particulate, concentrate following advantage is arranged: impurity ion content is few in the titanium dioxide particle, improves product quality; No plain boiled water produces, and shortens recovery process; Solid particulate rejection height reduces cost; Simple to operate, labour intensity is low; Water consumption is few, and processing power is big, less investment.
The utility model content
At the problems referred to above, main purpose of the present utility model is to provide a kind of and provides a kind of washing process that combines with membrane sepn that filters at the defective that has the existence of titanium dioxide washing room device and technology now, by the pressure filter press filtration, remove the denseer spent acid of 22%-25% that wherein contains, the slurry that obtains adds water and enters into the device that is applied to the metatitanic acid washing room that membrane separation unit is washed washing.
A kind of device that is applied to metatitanic acid washing workshop section, adopt plural number level cover to wash mode, back level clear liquid is served as the prime bath water, described device comprises spent acid reclamation film separation system and metatitanic acid washing film separating system, and wherein spent acid reclamation film separation system comprises spent acid storage tank, spent acid reclamation film tripping device, spent acid recycle pump; Metatitanic acid washing film separating system comprises material storage tank, agitator, metatitanic acid water lotion recycle pump and metatitanic acid washing membrane separation unit; The described device that is applied to metatitanic acid washing workshop section also comprises filter and troughing, by pipe connection the spent acid storage tank is arranged on the described filter, described troughing is by the end of pipe connection at metatitanic acid slurry transferpump, the circulating water pipeline that recirculated water enters also is installed on the described troughing, also pass through pipe connection one spent acid reclamation film tripping device on the described spent acid storage tank, described spent acid reclamation film tripping device also is equipped with the pipeline of sulfuric acid subsequent disposal, the bottom of described spent acid storage tank is also by pipe connection one spent acid inlet of circulating pump end, spent acid outlet of circulating pump end also is connected with spent acid reclamation film tripping device by pipeline, the other end of described metatitanic acid slurry transferpump is connected with a storage tank, one agitator is installed in the described storage tank, the bottom of described storage tank is by pipe connection metatitanic acid water lotion inlet of circulating pump end, metatitanic acid water lotion outlet of circulating pump end is by pipe connection metatitanic acid washing membrane separation unit, described metatitanic acid washing membrane separation unit by pipe connection on storage tank, the pipeline that is connected to the washing back follow-up dry workshop section of metatitanic acid slurries also is installed on the described storage tank, on the described metatitanic acid washing membrane separation unit circulating water pipeline that recirculated water enters is installed also, also be connected with sulfuric acid subsequent disposal pipeline and wastewater treatment pipeline on the described metatitanic acid washing membrane separation unit, the pipeline of reductive agent input also is installed on the described storage tank, and the metatitanic acid dope that reclaims in the described spent acid storage tank enters described filter once more through piping.
In specific embodiment of the utility model, filter is pressure filter, pressure leaf filter or leaf-type vacuum filter.
Positive progressive effect of the present utility model is: the utility model compares with the existing similar device that is applied to the metatitanic acid washing room, and the utility model film separating system is closed, can not introduce other impurity; Tubular membrane clear liquid lateral flux format high throughput is big, and titanium dioxide and water lotion separating effect are stable, and titanium dioxide particle rejection can reach more than 99%; The tubular membrane filtering system is simple to operate, and technical process is short, the level of automation height, and labor savings, investment reduces cost; Cleaning interval is long, cleans back tubular membrane flux recovery rate height, cleans simply, and the recovery rate of flux can reach more than 90%.
The utility model adopts and filters and membrane sepn bonded mode, can effectively reduce foreign matter content in the metatitanic acid particle, improves the titanium dioxide product quality; Solid particulate rejection height reduces cost; Operation can be controlled automatically, and is simple to operate, and labour intensity is low; By the water jacket mode, reduce water consumption, processing power is big, less investment; Recovering waste acid can improve the reclaim(ed) sulfuric acid quality, improves titanium dioxide output.
Description of drawings
Fig. 1 is the structure of the utility model device and the synoptic diagram of technical process.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Fig. 1 is the structure of the utility model device and the synoptic diagram of technical process, as shown in Figure 1: the utility model comprises spent acid reclamation film separation system and metatitanic acid washing film separating system (as two frame of broken lines among Fig. 1), and wherein spent acid reclamation film separation system comprises spent acid storage tank 2, spent acid reclamation film tripping device 3, spent acid recycle pump 4; Metatitanic acid washing film separating system comprises material storage tank 7, agitator 8, metatitanic acid water lotion recycle pump 9 and metatitanic acid washing membrane separation unit 10; The described device that is applied to metatitanic acid washing workshop section also comprises filter 1, by pipe connection spent acid storage tank 2 is arranged on the filter 1, troughing 5 is by the end of pipe connection at metatitanic acid slurry transferpump 6, the circulating water pipeline that recirculated water enters also is installed on the troughing 5, also pass through pipe connection one spent acid reclamation film tripping device 3 on the spent acid storage tank 2, spent acid reclamation film tripping device 3 also is equipped with the pipeline of sulfuric acid subsequent disposal, the entrance end of pipe connection one spent acid recycle pump 4 is also passed through in the bottom of spent acid storage tank 2, the exit end of spent acid recycle pump 4 also is connected with spent acid reclamation film tripping device 3 by pipeline, the other end of metatitanic acid slurry transferpump 6 is connected with a material storage tank 7, one agitator 8 is installed in the material storage tank 7, the bottom of material storage tank 7 is by an end of pipe connection metatitanic acid water lotion recycle pump 9, the other end of metatitanic acid water lotion recycle pump 9 is by pipe connection metatitanic acid washing membrane separation unit 10, metatitanic acid washing membrane separation unit 10 by pipe connection on material storage tank 7, the pipeline that connects the washing back follow-up dry workshop section of metatitanic acid slurries also is installed on the material storage tank 7, also be connected with sulfuric acid subsequent disposal pipeline on the metatitanic acid washing membrane separation unit 10, wastewater treatment pipeline and circulating water pipeline, circulating water pipeline divides two branches, a branch links to each other with troughing 5, another branch is connected with recirculated water storage tank 11, recirculated water storage tank 11 bottoms are connected with impeller pump 12, clear liquid is delivered in the material storage tank 7 for the metatitanic acid washing, the pipeline of sulfuric acid input also is installed on the material storage tank 7, and the metatitanic acid that reclaims in the spent acid storage tank 2 enters filter 1 once more through piping.
In concrete enforcement, filter 1 can be filter plants such as pressure filter, pressure leaf filter or leaf-type vacuum filter.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. one kind is applied to the device that metatitanic acid is washed workshop section, it is characterized in that: adopt plural number level cover to wash mode, back level clear liquid is served as the prime bath water, described device comprises spent acid reclamation film separation system and metatitanic acid washing film separating system, and wherein spent acid reclamation film separation system comprises spent acid storage tank, spent acid reclamation film tripping device, spent acid recycle pump; Metatitanic acid washing film separating system comprises material storage tank, agitator, metatitanic acid water lotion recycle pump and metatitanic acid washing membrane separation unit; The described device that is applied to metatitanic acid washing workshop section also comprises filter and troughing, by pipe connection the spent acid storage tank is arranged on the described filter, described troughing is by the end of pipe connection at metatitanic acid slurry transferpump, the circulating water pipeline that recirculated water enters also is installed on the described troughing, also pass through pipe connection one spent acid reclamation film tripping device on the described spent acid storage tank, described spent acid reclamation film tripping device also is equipped with the pipeline of sulfuric acid subsequent disposal, the bottom of described spent acid storage tank is also by pipe connection one spent acid inlet of circulating pump end, spent acid outlet of circulating pump end also is connected with spent acid reclamation film tripping device by pipeline, the other end of described metatitanic acid slurry transferpump is connected with a storage tank, one agitator is installed in the described storage tank, the bottom of described storage tank is by pipe connection metatitanic acid water lotion inlet of circulating pump end, metatitanic acid water lotion outlet of circulating pump end is by pipe connection metatitanic acid washing membrane separation unit, described metatitanic acid washing membrane separation unit by pipe connection on storage tank, the pipeline that is connected to the washing back follow-up dry workshop section of metatitanic acid slurries also is installed on the described storage tank, on the described metatitanic acid washing membrane separation unit circulating water pipeline that recirculated water enters is installed also, also be connected with sulfuric acid subsequent disposal pipeline and wastewater treatment pipeline on the described metatitanic acid washing membrane separation unit, the pipeline of reductive agent input also is installed on the described storage tank, and the metatitanic acid dope that reclaims in the described spent acid storage tank enters described filter once more through piping.
2. the device that is applied to metatitanic acid washing workshop section according to claim 1, it is characterized in that: filter is pressure filter, pressure leaf filter or leaf-type vacuum filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748647 CN203079706U (en) | 2012-12-29 | 2012-12-29 | Device applied to metatitanic acid washing working section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748647 CN203079706U (en) | 2012-12-29 | 2012-12-29 | Device applied to metatitanic acid washing working section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203079706U true CN203079706U (en) | 2013-07-24 |
Family
ID=48825564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220748647 Withdrawn - After Issue CN203079706U (en) | 2012-12-29 | 2012-12-29 | Device applied to metatitanic acid washing working section |
Country Status (1)
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|---|---|
| CN (1) | CN203079706U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030175A (en) * | 2012-12-29 | 2013-04-10 | 上海安赐机械设备有限公司 | Device and method applied to metatitanic acid washing room |
| 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 |
| CN109467121A (en) * | 2018-12-26 | 2019-03-15 | 江苏中研创星材料科技有限公司 | The method of the removal of impurities of metatitanic acid |
-
2012
- 2012-12-29 CN CN 201220748647 patent/CN203079706U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030175A (en) * | 2012-12-29 | 2013-04-10 | 上海安赐机械设备有限公司 | Device and method applied to metatitanic acid washing room |
| CN103030175B (en) * | 2012-12-29 | 2014-12-31 | 上海安赐机械设备有限公司 | Device and method applied to metatitanic acid washing room |
| 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 |
| CN109467121A (en) * | 2018-12-26 | 2019-03-15 | 江苏中研创星材料科技有限公司 | The method of the removal of impurities of metatitanic acid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130724 Effective date of abandoning: 20141231 |
|
| RGAV | Abandon patent right to avoid regrant |