CN103613081A - Nitric acid recycling system - Google Patents
Nitric acid recycling system Download PDFInfo
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- CN103613081A CN103613081A CN201310685694.2A CN201310685694A CN103613081A CN 103613081 A CN103613081 A CN 103613081A CN 201310685694 A CN201310685694 A CN 201310685694A CN 103613081 A CN103613081 A CN 103613081A
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- stainless steel
- nitric acid
- ball valve
- steel ball
- pipeline
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 61
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 135
- 239000010935 stainless steel Substances 0.000 claims abstract description 135
- 239000002253 acid Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 230000008021 deposition Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 abstract description 19
- 238000004140 cleaning Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 3
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The invention relates to the recycling of acidic liquid and particularly relates to a nitric acid recycling system. At present, a waste acid solution passing through nitric acid cleaning and ceramic filtering equipment still has certain acidity and is needed to be neutralized by adding an alkaline solution, and then, the waste liquid is discharged. The process has the defects that the resource is wasted, the cost is increased, the process is complex and not easy to control, and the discharged waste liquid can not be up to the standard frequently and pollutes the environment. The system is composed of a dilute nitric acid recovering, depositing and storing tank, a stainless steel magnetic pump device, a stainless steel delivery and recovery pipeline device, a stainless steel filter device, an automatic concentrated nitric acid liquid replenishing device and an automatic electrical control device; the waste acid solution is mixed with 50% nitric acid output by the automatic concentrated nitric acid liquid replenishing device to be up to the concentration of 3-5% after being deposited and filtered, and then, the waste acid solution is utilized.
Description
Technical field
The present invention relates to the recycling of acidic liquid, specifically a kind of nitric acid recycling system.
Background technology
Enterprise aborning, must carry out, after rare nitric acid acid solution cleaning, could again coming into operation after certain filter plant moves for some time.Spent acid solution after cleaning, still has certain acidity, need to add alkali lye to neutralize, and the waste liquid after neutralization discharges again.There is following problem in this kind of technique:
1, the spent acid solution after cleaning also has certain acidity and cleanup action, does not reclaim and not only wastes sour resource, has also increased in alkali lye and cost;
2, in alkali lye and complex process be not easy to control and put in place, the waste liquid of discharge is usually not up to standard, contaminate environment.
Summary of the invention
The object of this invention is to provide a kind of nitric acid recycling system, to overcome the deficiencies in the prior art.
Technical scheme of the present invention is that nitric acid recycling system is comprised of rare nitric acid recovery deposition bin, stainless steel magnetic drive pump, conveying and recovery stainless steel pipeline, Stainless Steel Filter device, concentrated nitric acid automatic liquid supply device, electrical automatic control equipment;
Described rare nitric acid reclaims deposition bin, by stainless-steel sheet, is welded, and is provided with back acid mouth, acid mouth, acid mouth; In rare nitric acid recovery deposition bin, be provided with four partition districts of turning back, and the bottom that cuts off district at each is respectively equipped with Stainless Steel Ball Valve a, Stainless Steel Ball Valve b, Stainless Steel Ball Valve c, Stainless Steel Ball Valve d;
Described stainless steel magnetic drive pump, be that two stainless steel magnetic drive pumps are connected respectively with acid mouth, acid mouth that rare nitric acid reclaims deposition bin, Stainless Steel Ball Valve e, Stainless Steel Ball Valve f, Stainless Steel Ball Valve g, Stainless Steel Ball Valve h are equipped with respectively in the import of two stainless steel magnetic drive pumps and outlet;
Described conveying and recovery stainless steel pipeline, be respectively that one end connection is cleaned ceramic filter equipment leakage fluid dram, and the other end reclaims sour mouthful of pipeline being connected of returning of deposition bin with rare nitric acid and is provided with discharge opeing pneumavalve, Stainless Steel Ball Valve k;
One end connection is cleaned ceramic filter equipment overflow port, and the other end is provided with overflow pneumavalve with one section of pipeline that the pipeline that leads to Stainless Steel Ball Valve k is connected;
One end is connected with Stainless Steel Ball Valve f, Stainless Steel Ball Valve h connecting leg road, and the pipeline that the other end connects the water supply pneumavalve a on electrical automatic control equipment is provided with stainless steel check valve, stainless steel surplus valve;
One end connects Stainless Steel Filter, and the pipeline that the other end connection is cleaned ceramic filter equipment is provided with the rear tensimeter of filter, and Stainless Steel Ball Valve j, for sour tensimeter, rinses interface;
Described be equipped with that manometric Stainless Steel Filter before filter is connected in water supply pneumavalve a, water supply pneumavalve b and the pipeline that connects on; Water supply pneumavalve one end is connected with tap water pipe line; Strainer tapping valve is connected on the pipeline between discharge opeing pneumavalve, Stainless Steel Ball Valve k;
Described concentrated nitric acid automatic liquid supply device is comprised of stainless steel concentrated nitric acid storage tank and a METERING DIAPHRAGM PUMPS, stainless steel concentrated nitric acid storage tank, METERING DIAPHRAGM PUMPS, Stainless Steel Ball Valve l connect successively, and Stainless Steel Ball Valve l is connected with the pipeline between sour tensimeter and Stainless Steel Ball Valve j.
Further, described electrical automatic control equipment adopts the on-off action of each pneumavalve of PLC programming Control, pump.
Further, described rare nitric acid reclaims the position of deposition bin lower than the position of the ceramic filter equipment being cleaned.
Beneficial effect of the present invention is that acid solution is recycled fully, technique is simple, save production cost, cost of investment is low, to producing strong adaptability and reducing environmental pollution.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of nitric acid recycling system of the present invention.
In figure:
1. rare nitric acid reclaims deposition bin, 101. times acid mouthful, 102. acid mouths, 103. Stainless Steel Ball Valve a, 104. Stainless Steel Ball Valve b, 105. Stainless Steel Ball Valve c, 106. Stainless Steel Ball Valve d;
2. stainless steel magnetic drive pump, 201. Stainless Steel Ball Valve e, 202. Stainless Steel Ball Valve f, 201 ". Stainless Steel Ball Valve g, 202 ". Stainless Steel Ball Valve h;
3. carry and reclaim stainless steel pipeline device, 301. stainless steel check valves, 302. stainless steel surplus valves, 303. Stainless Steel Ball Valve j, 304. for sour tensimeter, and 305. rinse interface, 306. overflow ports, 307. leakage fluid drams, 308. Stainless Steel Ball Valve k;
4. Stainless Steel Filter device, 401. strainer tapping valves, tensimeter before 402 filters, tensimeter after 403. filters;
5. concentrated nitric acid automatic liquid supply device, 501. concentrated nitric acid storage tanks, 50.2 METERING DIAPHRAGM PUMPS, 503. Stainless Steel Ball Valve l;
6. electrical automatic control equipment, 601. for sour pneumavalve, 602. water supply pneumavalves, 603. overflow pneumavalves, 604. discharge opeing pneumavalves;
7. the ceramic filter equipment being cleaned.
Embodiment
As shown in Figure 1, by rare nitric acid, reclaiming deposition bin 1, stainless steel magnetic drive pump 2, conveying and recovery stainless steel pipeline 3, Stainless Steel Filter device 4, concentrated nitric acid automatic liquid supply device 5, electrical automatic control equipment 6 forms;
Described rare nitric acid reclaims deposition bin 1, by stainless-steel sheet, is welded, and is provided with back acid mouth 101, acid mouth 102, acid mouth 102 "; In rare nitric acid recovery deposition bin 1, be provided with four partition districts of turning back, and the bottom that cuts off district at each is respectively equipped with Stainless Steel Ball Valve a 103, Stainless Steel Ball Valve b 104, Stainless Steel Ball Valve c 105, Stainless Steel Ball Valve d 106;
Described stainless steel magnetic drive pump 2, acid mouth 102, the acid mouth 102 that two stainless steel magnetic drive pumps 2 and rare nitric acid reclaim deposition bin " is connected respectively, the import of two stainless steel magnetic drive pumps 2 and export Stainless Steel Ball Valve e 201, Stainless Steel Ball Valve f 202, Stainless Steel Ball Valve g 201 are housed respectively ", Stainless Steel Ball Valve h 202 ";
Described conveying and recovery stainless steel pipeline 3, be respectively that one end connection is cleaned ceramic filter equipment leakage fluid dram 307, and the other end is provided with discharge opeing pneumavalve 604, Stainless Steel Ball Valve k 308 with sour mouth 101 pipelines that are connected that return that rare nitric acid reclaims deposition bin 1;
One end connection is cleaned ceramic filter equipment overflow port 306, and the other end is provided with overflow pneumavalve 603 with one section of pipeline that the pipeline that leads to Stainless Steel Ball Valve k 308 is connected;
One end and Stainless Steel Ball Valve f 202, Stainless Steel Ball Valve h 202 " and connecting leg road be connected, the pipeline that the other end connects the water supply pneumavalve a 601 on electrical automatic control equipment 6 is provided with stainless steel check valve 301, stainless steel surplus valve 302;
One end connects Stainless Steel Filter 4, and the pipeline that the other end connection is cleaned ceramic filter equipment is provided with the rear tensimeter 403 of filter, and Stainless Steel Ball Valve j 303, for sour tensimeter 304, rinses interface 305;
Described be equipped with that the Stainless Steel Filter 4 of tensimeter 402 before filter is connected in water supply pneumavalve a 601, water supply pneumavalve b 602 and the pipeline that connects on; Water supply pneumavalve 602 one end are connected with tap water pipe line; Strainer tapping valve 401 is connected on the pipeline between discharge opeing pneumavalve 604, Stainless Steel Ball Valve k 308;
Described concentrated nitric acid automatic liquid supply device 5 is comprised of stainless steel concentrated nitric acid storage tank 501 and a METERING DIAPHRAGM PUMPS 502; Stainless steel concentrated nitric acid storage tank 501, METERING DIAPHRAGM PUMPS 502, tensimeter, Stainless Steel Ball Valve l(503) connect successively, Stainless Steel Ball Valve l 503 is connected with the pipeline between sour tensimeter 304 and Stainless Steel Ball Valve j 303;
During work, after the ceramic filter equipment carwash work being cleaned completes, spent acid solution is entered and is carried and reclaim stainless steel pipeline 3 by 307 leakage fluid drams, through Stainless Steel Ball Valve k 308 and time acid mouth 101, enter rare nitric acid recovery deposition bin 1, order is turned back and is cut off district through four, extend solid particulate depositing time in spent acid solution, to the 4th, cut off district, spent acid solution is basic become very limpid just, during due to carwash, rare nitric acid and filtrate react, and now spent acid solution concentration ratio standard carwash concentration 3 ~ 5% is low.
Spent acid solution after clarification is by acid mouth 102 or acid mouth 102 ", Stainless Steel Ball Valve e 201 or Stainless Steel Ball Valve g 201 " enter after 2 pressurizations of stainless steel magnetic drive pump, through Stainless Steel Ball Valve f 202 or Stainless Steel Ball Valve h 202 " after supply with to carry stainless steel pipeline 3, in system, adopt two stainless steel magnetic drive pumps 2 configuration arranged side by side safeguards system to move continuously and easy access.
Carry in stainless steel pipeline 3 acid solution after clarification through stainless steel check valve 301, if when pressure surpasses the set(ting)value that system needs, stainless steel surplus valve 302 is opened, and part acid solution is overflowed back to rare nitric acid and reclaim deposition bin 1.
When opening for sour pneumavalve 601, water supply pneumavalve 602 cuts out, overflow pneumavalve 603 is opened, when discharge opeing pneumavalve 604 cuts out, acid solution after clarification is through supplying sour pneumavalve 601, enter Stainless Steel Filter 4 and filter still the spent acid solution with fine solid particle, after Stainless Steel Ball Valve j303, by flushing interface 305, enter filter plant again and carry out carwash, when acid solution is too much, by overflow port 306 and overflow pneumavalve 603, enters and reclaim stainless steel pipeline 3, by acid solution pressure before the 402 observation filters of tensimeter before filter, by acid solution pressure after the 403 observation filters of tensimeter after filter, when pressure reduction is excessive, should change Stainless Steel Filter 4 filter cores, for sour tensimeter 304 recording geometrys, supply acid fracturing power.
Because the spent acid solution concentration ratio standard carwash concentration 3 ~ 5% after precipitation, filtration in system is low, need to supplement 50% concentrated nitric acid by concentrated nitric acid automatic liquid supply device 5, according to rare nitric acid, reclaim the acid strength of obtaining in deposition bin 1, by electric control system, automatically calculate the 50% supplementary concentrated nitric acid amount that needs, open the concentrated nitric acid that METERING DIAPHRAGM PUMPS 502 extracts in concentrated nitric acid storage tank 501, after Stainless Steel Ball Valve l 503, supplement to enter in system and mix with diluted acid and reach 3 ~ 5% concentration.
By the acid solution that reaches 3 ~ 5% concentration through supplementing after 50% concentrated nitric acid mixes, carry out clean-out operation, after operation completes, stainless steel magnetic drive pump 2 is closed, for sour pneumavalve 601, close, water supply pneumavalve 602 cuts out, and overflow pneumavalve 603 is opened, discharge opeing pneumavalve 604 is opened, spent acid solution after cleaning is entered to recovery stainless steel pipeline 3 by leakage fluid dram 307, through Stainless Steel Ball Valve k 308 and time acid mouth 101, enter rare nitric acid recovery deposition bin 1, carry out next round cycling and reutilization.
Finally for sour pneumavalve 601, close, water supply pneumavalve 602 is opened, overflow pneumavalve 603 is opened, discharge opeing pneumavalve 604 is opened, tap water after Stainless Steel Filter 4 filters again through Stainless Steel Ball Valve 303, by rinsing interface 305, enter the cleaning that ceramic filter equipment carries out remaining acid solution, the liquid after cleaning enters rare nitric acid through discharge opeing pneumavalve 604, Stainless Steel Ball Valve k 308 and reclaims deposition bin 1, is used for diluting concentrated nitric acid.After all completing, close water supply pneumavalve 602, overflow pneumavalve 603 and discharge opeing pneumavalve 604, through the ceramic filter equipment cleaning, carry out formal filtration operation.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give all embodiments exhaustive.Every still row in protection scope of the present invention of apparent variation that technical scheme of the present invention extends out or change that belong to.
Claims (3)
1. a nitric acid recycling system; It is characterized in that by rare nitric acid, reclaiming deposition bin (1), stainless steel magnetic drive pump (2), conveying and recovery stainless steel pipeline (3), Stainless Steel Filter device (4), concentrated nitric acid automatic liquid supply device (5), electrical automatic control equipment (6) forms;
Described rare nitric acid reclaims deposition bin (1), by stainless-steel sheet, is welded, and is provided with back acid mouth (101), acid mouth (102), acid mouth (102 "); Rare nitric acid reclaims and in deposition bin (1), is provided with four and turns back and cut off districts, and the bottom that cuts off district at each is respectively equipped with Stainless Steel Ball Valve a(103), Stainless Steel Ball Valve b(104), Stainless Steel Ball Valve c(105), Stainless Steel Ball Valve d(106);
Described stainless steel magnetic drive pump (2), acid mouth (102), acid mouth (102 ") that to be two stainless steel magnetic drive pumps (2) reclaim deposition bin with rare nitric acid are connected respectively, the import of two stainless steel magnetic drive pumps (2) and export Stainless Steel Ball Valve e(201 is housed respectively), Stainless Steel Ball Valve f (202), Stainless Steel Ball Valve g (201 "), Stainless Steel Ball Valve h (202 ");
Described conveying and recovery stainless steel pipeline (3), be respectively that one end connects and to be cleaned ceramic filter equipment leakage fluid dram (307), the pipeline that acid mouth (101) is connected that returns that the other end and rare nitric acid reclaim deposition bin (1) is provided with discharge opeing pneumavalve (604), Stainless Steel Ball Valve k(308);
One end connects and to be cleaned ceramic filter equipment overflow port (306), the other end with towards Stainless Steel Ball Valve k(308) one section of pipeline being connected of pipeline be provided with overflow pneumavalve (603);
One end and Stainless Steel Ball Valve f (202), Stainless Steel Ball Valve h (202 ") connecting leg road are connected; the other end connects the water supply pneumavalve a(601 on electrical automatic control equipment (6)) pipeline be provided with stainless steel check valve (301), stainless steel surplus valve (302);
One end connects Stainless Steel Filter (4), and the pipeline that the other end connection is cleaned ceramic filter equipment is provided with the rear tensimeter (403) of filter, Stainless Steel Ball Valve j(303), for sour tensimeter (304), rinse interface (305);
Described the Stainless Steel Filter (4) of tensimeter (402) before filter be housed be connected in water supply pneumavalve a(601), water supply pneumavalve b(602) and the pipeline that connects on; Water supply pneumavalve (602) one end is connected with tap water pipe line; Strainer tapping valve (401) is connected in discharge opeing pneumavalve (604), Stainless Steel Ball Valve k(308) between pipeline on;
Described concentrated nitric acid automatic liquid supply device (5) is comprised of stainless steel concentrated nitric acid storage tank (501) and a METERING DIAPHRAGM PUMPS (502); Stainless steel concentrated nitric acid storage tank (501), METERING DIAPHRAGM PUMPS (502), Stainless Steel Ball Valve l(503) connect successively; Stainless Steel Ball Valve l(503) with for sour tensimeter (304) and Stainless Steel Ball Valve j(303) between pipeline be connected.
2. a kind of nitric acid recycling system as claimed in claim 1; It is characterized in that described electrical automatic control equipment adopts PLC programming automatically to control the on-off action of each pneumavalve, pump.
3. a kind of nitric acid recycling system as claimed in claim 1; It is characterized in that described rare nitric acid reclaims the position of deposition bin lower than the position of the ceramic filter equipment (7) being cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685694.2A CN103613081A (en) | 2013-12-16 | 2013-12-16 | Nitric acid recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685694.2A CN103613081A (en) | 2013-12-16 | 2013-12-16 | Nitric acid recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103613081A true CN103613081A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685694.2A Pending CN103613081A (en) | 2013-12-16 | 2013-12-16 | Nitric acid recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103613081A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548723A (en) * | 2015-01-13 | 2015-04-29 | 云南大红山管道有限公司 | Nitric acid discharge system |
| CN105854387A (en) * | 2016-05-19 | 2016-08-17 | 湖北六国化工股份有限公司 | Device and process for improving regeneration efficiency of ceramic filtering plate for phosphate tailing |
| CN109319721A (en) * | 2018-11-02 | 2019-02-12 | 江苏新美星包装机械股份有限公司 | The cleaning solution supplying mechanism of beverage filling production lines cleaning |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001089989A1 (en) * | 2000-05-22 | 2001-11-29 | Qvf Engineering Gmbh | Method for producing concentrated nitric acid and installation for carrying out a method of this type |
| JP2012125723A (en) * | 2010-12-16 | 2012-07-05 | Kurita Water Ind Ltd | Apparatus for refining waste liquid of nitrohydrofluoric acid and method therefor |
-
2013
- 2013-12-16 CN CN201310685694.2A patent/CN103613081A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001089989A1 (en) * | 2000-05-22 | 2001-11-29 | Qvf Engineering Gmbh | Method for producing concentrated nitric acid and installation for carrying out a method of this type |
| JP2012125723A (en) * | 2010-12-16 | 2012-07-05 | Kurita Water Ind Ltd | Apparatus for refining waste liquid of nitrohydrofluoric acid and method therefor |
Non-Patent Citations (1)
| Title |
|---|
| 闫库等: "矾山磷矿磷精矿脱水系统改造", 《金属矿山》, no. 6, 30 June 2012 (2012-06-30) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548723A (en) * | 2015-01-13 | 2015-04-29 | 云南大红山管道有限公司 | Nitric acid discharge system |
| CN105854387A (en) * | 2016-05-19 | 2016-08-17 | 湖北六国化工股份有限公司 | Device and process for improving regeneration efficiency of ceramic filtering plate for phosphate tailing |
| CN109319721A (en) * | 2018-11-02 | 2019-02-12 | 江苏新美星包装机械股份有限公司 | The cleaning solution supplying mechanism of beverage filling production lines cleaning |
| CN109319721B (en) * | 2018-11-02 | 2023-10-13 | 江苏新美星包装机械股份有限公司 | Cleaning liquid supply mechanism for cleaning beverage filling production line |
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Application publication date: 20140305 |