CN102601083A - Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer - Google Patents
Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer Download PDFInfo
- Publication number
- CN102601083A CN102601083A CN2012100730170A CN201210073017A CN102601083A CN 102601083 A CN102601083 A CN 102601083A CN 2012100730170 A CN2012100730170 A CN 2012100730170A CN 201210073017 A CN201210073017 A CN 201210073017A CN 102601083 A CN102601083 A CN 102601083A
- Authority
- CN
- China
- Prior art keywords
- soup
- wash engine
- cleaning
- wash
- surface scale
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a washing device of scaling substances on the surface of a pulp washer and a washing method of the scaling substances on the surface of the pulp washer. The washing device comprises a pulp washer (2), a liquor circulation tank (3) connected with a filtrate pipe of the pulp washer (2), and a liquor circulation pump (4) connected with the lower part of the liquor circulation tank (3) through a pipeline. The outlet of the liquor circulation pump (4) is connected with a top spraying tube (1) or/and a bottom washing pipe through the pipeline. The washing method comprises the steps of: adding a washing liquor to the liquor circulation tank (3); starting the liquor circulation pump (4) and pumping the washing liquor to the top spraying tube (1) or/and the bottom washing pipe to wash the pulp washer (2) circularly, and stopping the liquor circulation pump (4) after washing, and blowing and cleaning the pulp washer.
Description
Technical field
The present invention relates to pulping and paper-making field production equipment surface scale thing cleaning device, especially relate to a kind of wash engine surface scale thing cleaning device; The invention still further relates to the cleaning method of wash engine surface scale thing.
Background technology
Locate often to have foulant to produce its fouling reason more complicated at the slurry tower of pulping bleaching workshop section, wash engine, conveying worm etc.Its reason, existing alkalization disposed slurry pH value raises, and also has due to a large amount of strippings of alkalization lignin; On the other hand, no matter wood pulp or straw pulp, sulphate cook all can produce hexenuronic acid (HexA), and this material can be transformed into oxalic acid etc. after floating through peroxide.Oxalic acid is easy to combine with calcium, magnesium ion form calcium oxalate, magnesium oxalate sediment, when the pH of system value>will separate out 3 the time, and fouling on equipment.Calcium oxalate, magnesium oxalate are the minimum calcium salts of solubility in a kind of indissoluble and the water.After the fouling of wash engine filter plate, filtrate flows property is poor, has not only reduced production capacity; Increased energy consumption, also caused filter plate pressurized and damaged prematurely repeatedly, thereby need frequent change wash engine filter plate; Both have influence on the efficient of equipment operation, also increased the cost of changing filter plate greatly.The foulant that at present calcium oxalate, magnesium oxalate is formed adopts common alkali cleaning, water under high pressure cleaning, artificial cleaning etc., and effect is all undesirable, is difficult to fundamentally remove its fouling.
Summary of the invention
In order to overcome the defective of prior art, one of technical problem to be solved by this invention provides a kind of cleaning device of wash engine surface scale thing.This cleaning device can effectively be removed the foulant on wash engine surface through the circulation of cleaning fluid.
In order to solve the problems of the technologies described above, on the one hand, the present invention provides a kind of wash engine surface scale thing cleaning device, and its basic technical scheme is: comprise wash engine; The soup circulating slot that is connected with the filtrate pipe of said wash engine; The soup circulating pump that is connected through pipeline with said soup circulating slot bottom; Said soup outlet of circulating pump through pipeline and said wash engine the top spray pipe or/and the scavenge pipe of bottom be connected.
Further, the soup circulating slot of wash engine surface scale thing cleaning device also has steam-heating pipe.
Further, the bottom of the soup circulating slot of wash engine surface scale thing cleaning device also has blow-off pipe.
Further, the soup circulating slot of wash engine surface scale thing cleaning device also has screen pack, and the cleaning fluid that gets into said soup circulating pump is filtered.
Further, wash engine surface scale thing cleaning device also is connected with Compressed Gas or steam pipe with the soup circulation pipe that said wash engine bottom scavenge pipe is connected.
On the other hand, the present invention also provides a kind of method of utilizing aforementioned cleaning device to clean wash engine surface scale thing, and its basic technical scheme may further comprise the steps:
S1: in said soup circulating slot, add and clean soup;
S2: start the soup circulating pump, said cleaning soup is pumped into the top spray pipe of wash engine or/and the scavenge pipe of bottom carries out wash cycles to said wash engine;
S3: cleaning finishes, and the soup circulating pump of stopping using purges and cleans up wash engine.
Further, clean the method for wash engine surface scale thing, said cleaning soup is the solution that can dissolve said wash engine surface scale thing.Like alkali, nitric acid, nitrate, sulfuric acid or aqueous solution of hydrochloric acid etc.
Further; Clean the method for wash engine surface scale thing; To the surface scale thing of the wash engine of bleaching chlorine dioxide stage, said cleaning soup is an aluminum nitrate aqueous solution, and it is 10wt%～30 wt% that said aluminum nitrate aqueous solution contains aluminum nitrate; Containing methenamine is 1 wt%～2 wt%, 40～50 ℃ of cleaning temperatures.
Further; Clean the method for wash engine surface scale thing; Surface scale thing to the wash engine of bleaching chlorine dioxide stage; The Busperse 2043 cleaning agent aqueous solution that said cleaning soup is a Bark Man, Busperse 2043 cleaning agent content are 7wt%～15wt%, cleaning temperature is 60 ~ 80 ℃.
Further, clean the method for wash engine surface scale thing, purge to the soup heating or to the wash engine filter plate with steam, thus the temperature that guarantees to clean soup.
Under the situation of not conflicting, above improvement project can be implemented alone or in combination.
The beneficial effect that the present invention brings: through timely removing to the wash engine surface scale; Can improve the flowability of filtrating, improve the production capacity and the equipment operating efficiency of wash engine, avoid causing filter plate pressurized and breakage repeatedly; Reduce time and the cost of changing the wash engine filter plate, cut down the consumption of energy; Can also avoid floating coming off of back foulant, reduce the content of inorganic dust in the pulping, can effectively change the quality of bleaching disposed slurry.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment content of the present invention is done further explain:
Fig. 1 is an embodiment of the invention wash engine surface scale thing cleaning device structural representation.
The specific embodiment
Wash engine surface scale thing cleaning device as shown in Figure 1: have wash engine 2, soup circulating slot 3 is connected with the filtrate pipe of wash engine 2, and soup circulating slot 3 bottoms are connected with soup circulating pump 4 through pipeline; The outlet conduit of soup circulating pump 4 is divided into two-way; One the tunnel is connected with the top spray pipe 1 of wash engine 2; Another road is connected with the scavenge pipe of the bottom of wash engine 2; Soup circulating slot 3 also is provided with steam-heating pipe, also has blow-off pipe in its bottom, and soup circulating pump 4 also is connected with Compressed Gas or steam pipe with the pipeline that the bottom scavenge pipe of wash engine 2 is connected.
Embodiment 1: when using above-mentioned cleaning device to clean the surface scale thing of the DD wash engine of bleaching chlorine dioxide stage; Earlier paper pulp in DD wash engine and the pipeline and foreign material are cleaned up with clear water; With Compressed Gas or steam DD wash engine and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the Busperse 2043 cleaning agent aqueous solution of Bark Man, its concentration is 7wt%, and temperature is 80 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of DD wash engine 2 and the scavenge pipe of bottom DD wash engine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of DD wash engine 2 or the scavenge pipe of bottom; After the wash cycles 8～12 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water wash engine.In cleaning process, purge to the soup heating or to the wash engine filter plate with steam, thus the temperature of assurance cleaning fluid, and through replenishing stoste assurance liquor strength more than 7wt%.Production process shows that wash cycles is after 4 hours, and the fouling of DD wash engine 2 has 87.37% dissolved being removed, and after 8 hours, the dirty thing more than 95% is also all dissolved to be removed.
Embodiment 2: when using above-mentioned cleaning device to clean the surface scale thing of the DD wash engine of bleaching chlorine dioxide stage; Earlier paper pulp in DD wash engine and the pipeline and foreign material are cleaned up with clear water; With Compressed Gas or steam DD wash engine and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the Busperse 2043 cleaning agent aqueous solution of Bark Man, its initial concentration is 12wt%, and temperature is 70 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of DD wash engine 2 and the scavenge pipe of bottom DD wash engine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of DD wash engine 2 or the scavenge pipe of bottom; After the wash cycles 8～12 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water wash engine.In cleaning process, purge to the soup heating or to the wash engine filter plate with steam, thus the temperature of assurance cleaning fluid, and through replenishing stoste assurance liquor strength more than 7wt%.Production process shows that wash cycles is after 4 hours, and the fouling of DD wash engine 2 has 86.31% dissolved being removed, and after 8 hours, the dirty thing more than 95% is also all dissolved to be removed.
Embodiment 3: when using above-mentioned cleaning device to clean the surface scale thing of the DD wash engine of bleaching chlorine dioxide stage; Earlier paper pulp in DD wash engine and the pipeline and foreign material are cleaned up with clear water; With Compressed Gas or steam DD wash engine and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the Busperse 2043 cleaning agent aqueous solution of Bark Man, its initial concentration is 15wt%, and temperature is 60 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of DD wash engine 2 and the scavenge pipe of bottom DD wash engine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of DD wash engine 2 or the scavenge pipe of bottom; After the wash cycles 8～12 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water wash engine.In cleaning process, purge to the soup heating or to the wash engine filter plate with steam, thus the temperature of assurance cleaning fluid, and through replenishing stoste assurance liquor strength more than 7wt%.Production process shows that wash cycles is after 4 hours, and the fouling of DD wash engine 2 has 84% dissolved being removed, and after 8 hours, the dirty thing more than 95% is also all dissolved to be removed.
Embodiment 4: when using above-mentioned cleaning device to clean the surface scale thing of the vacuum pulp washing machine 2 of bleaching section; Earlier paper pulp and foreign material in vacuum pulp washing machine 2 and the pipeline are cleaned up with clear water; With Compressed Gas or steam vacuum pulp washing machine and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the aluminum nitrate and the methenamine aqueous solution, temperature is 40 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of vacuum pulp washing machine 2 and the scavenge pipe of bottom vacuum pulp washing machine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of vacuum pulp washing machine 2 or the scavenge pipe of bottom; After the wash cycles 4～8 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water vacuum pulp washing machine.In cleaning process, purge to soup heating or to the vacuum pulp washing machine filter plate with steam, thereby guarantee the temperature of cleaning fluid, and the concentration through replenishing the aluminum nitrate that stoste guarantees cleaning fluid is at 30wt%, containing methenamine is 1 wt%～2 wt%.Production process shows that wash cycles is after 4 hours, and the fouling of wash engine 2 has 87.8% dissolved being removed, and after 8 hours, the dirty thing more than 96% is also all dissolved to be removed.
Embodiment 5: when using above-mentioned cleaning device to clean the surface scale thing of the vacuum pulp washing machine 2 of bleaching section; Earlier paper pulp and foreign material in vacuum pulp washing machine 2 and the pipeline are cleaned up with clear water; With Compressed Gas or steam vacuum pulp washing machine 2 and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the aluminum nitrate and the methenamine aqueous solution, temperature is 45 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of vacuum pulp washing machine 2 and the scavenge pipe of bottom vacuum pulp washing machine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of vacuum pulp washing machine 2 or the scavenge pipe of bottom; After the wash cycles 4～8 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water vacuum pulp washing machine.In cleaning process, purge to soup heating or to the vacuum pulp washing machine filter plate with steam, thereby guarantee the temperature of cleaning fluid, and the concentration through replenishing the aluminum nitrate that stoste guarantees cleaning fluid is at 20wt%, containing methenamine is 1 wt%～2 wt%.Production process shows that wash cycles is after 4 hours, and the fouling of wash engine 2 has 90.3% dissolved being removed, and after 8 hours, the dirty thing more than 96% is also all dissolved to be removed.
Embodiment 4: when using above-mentioned cleaning device to clean the surface scale thing of the vacuum pulp washing machine 2 of bleaching section; Earlier paper pulp and foreign material in vacuum pulp washing machine 2 and the pipeline are cleaned up with clear water; With Compressed Gas or steam vacuum pulp washing machine 2 and corresponding pipeline are carried out purge, to reduce the consumption of cleaning soup in the cleaning process; In soup circulating slot 3, add the aluminum nitrate and the methenamine aqueous solution, temperature is 50 ℃; Start soup circulating pump 4; Said cleaning soup is pumped into the top spray pipe 1 of vacuum pulp washing machine 2 and the scavenge pipe of bottom vacuum pulp washing machine 2 is carried out wash cycles, in cleaning process, clean soup and also can only pump into the top spray pipe 1 of vacuum pulp washing machine 2 or the scavenge pipe of bottom; After the wash cycles 4～8 hours, the soup circulating pump 4 of stopping using purges and cleans up with clear water vacuum pulp washing machine.In cleaning process, purge to soup heating or to the vacuum pulp washing machine filter plate with steam, thereby guarantee the temperature of cleaning fluid, and the concentration through replenishing the aluminum nitrate that stoste guarantees cleaning fluid is at 10wt%, containing methenamine is 1 wt%～2 wt%.Production process shows that wash cycles is after 4 hours, and the fouling of wash engine 2 has 91.8% dissolved being removed, and after 8 hours, the dirty thing more than 96% is also all dissolved to be removed.
Corrosion test: the Busperse 2043 of Bark Man is mixed with the concentration of aqueous solution of 10wt%, at 80 ℃; It is 20wt% that aluminum nitrate is mixed with concentration, and containing methenamine is the 1.5 wt% aqueous solution, and temperature is 50 ℃, carries out corrosion test respectively, and the test material is the SS304 stainless steel, and soak time is 12 hours, detects its loss in weight situation, and the result is following:
| Project | Aluminum nitrate | Busperse 2043 |
| The heavy g of test product before the experiment | 31.667 | 30.1082 |
| The heavy g of experiment back test product | 31.6668 | 30.1082 |
| Loss in weight g | 0.0002 | 0 |
The result shows: aluminum nitrate is lower to the stainless corrosivity of SS304, and 2043 pairs of stainless corrosivity of SS304 of the Busperse of Bark Man are littler.
The above is merely the preferred embodiments of the present invention, and does not limit the present invention in any way, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a wash engine surface scale thing cleaning device is characterized in that: comprise wash engine (2); The soup circulating slot (3) that is connected with the filtrate pipe of said wash engine (2); The soup circulating pump (4) that is connected through pipeline with said soup circulating slot (3) bottom; The outlet of said soup circulating pump (4) through pipeline and said wash engine (2) top spray pipe (1) or/and the scavenge pipe of bottom be connected.
2. wash engine surface scale thing cleaning device according to claim 1, it is characterized in that: said soup circulating slot (3) also has steam-heating pipe.
3. wash engine surface scale thing cleaning device according to claim 1, it is characterized in that: the bottom of said soup circulating slot (3) also has blow-off pipe.
4. wash engine surface scale thing cleaning device according to claim 1, it is characterized in that: said soup circulating slot (3) also has screen pack, and the cleaning fluid that gets into said soup circulating pump (4) is filtered.
5. wash engine surface scale thing cleaning device according to claim 1 is characterized in that: the soup circulation pipe that is connected with said wash engine (2) bottom scavenge pipe also is connected with Compressed Gas or steam pipe.
6. a method of utilizing the said cleaning device of claim 1 to clean wash engine surface scale thing is characterized in that, may further comprise the steps:
S1: in said soup circulating slot (3), add and clean soup;
S2: start soup circulating pump (4), said cleaning soup is pumped into the top spray pipe (1) of wash engine (2) or/and the bottom scavenge pipe carries out wash cycles to said wash engine (2);
S3: cleaning finishes, and the soup circulating pump (4) of stopping using purges and cleans up wash engine.
7. the method for cleaning wash engine surface scale thing according to claim 6 is characterized in that: said cleaning soup is for dissolving the solution of said wash engine surface scale thing.
8. the method for cleaning wash engine surface scale thing according to claim 6; It is characterized in that: said wash engine is the wash engine of bleaching chlorine dioxide stage; Said cleaning soup is an aluminum nitrate aqueous solution; It is 10wt%～30 wt% that said aluminum nitrate aqueous solution contains aluminum nitrate, and containing methenamine is 1 wt%～2 wt%, and cleaning temperature is 40～50 ℃.
9. the method for cleaning wash engine surface scale thing according to claim 6; It is characterized in that: said wash engine is the wash engine of bleaching chlorine dioxide stage; The Busperse 2043 cleaning agent aqueous solution that said cleaning soup is a Bark Man; Busperse 2043 cleaning agent content are 7wt%～15wt%, and cleaning temperature is 60 ~ 80 ℃.
10. the method for cleaning wash engine surface scale thing according to claim 6 is characterized in that: purges to the soup heating or to the wash engine filter plate with steam, thus the temperature that guarantees to clean soup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073017.0A CN102601083B (en) | 2012-03-20 | 2012-03-20 | Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073017.0A CN102601083B (en) | 2012-03-20 | 2012-03-20 | Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102601083A true CN102601083A (en) | 2012-07-25 |
| CN102601083B CN102601083B (en) | 2014-09-10 |
Family
ID=46519067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210073017.0A Active CN102601083B (en) | 2012-03-20 | 2012-03-20 | Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102601083B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316863A (en) * | 2013-07-10 | 2013-09-25 | 瓮福（集团）有限责任公司 | Filter deposit cleaning method |
| CN103721970A (en) * | 2013-12-19 | 2014-04-16 | 攀钢集团工程技术有限公司 | Cleaning device and method for cleaning cooler of desulfurization system |
| CN106245398A (en) * | 2016-08-31 | 2016-12-21 | 玖龙纸业（太仓）有限公司 | The de-sludging device of a kind of deinking line polydisc and de-sludging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565061A (en) * | 1994-06-14 | 1996-10-15 | Salminen; Reijo | Method and apparatus for removing scales deposited on the strainer of a pulp digester |
| JPH10168775A (en) * | 1996-11-29 | 1998-06-23 | Oji Paper Co Ltd | Washing of screen part of diffuser washer |
| JPH1161672A (en) * | 1997-08-07 | 1999-03-05 | Nippon Paper Ind Co Ltd | Cleaning of diffusion cleaning screen |
| CN1531615A (en) * | 2001-04-16 | 2004-09-22 | 巴科曼实验室国际公司 | Process and apparatus for removal of scale build-up |
-
2012
- 2012-03-20 CN CN201210073017.0A patent/CN102601083B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565061A (en) * | 1994-06-14 | 1996-10-15 | Salminen; Reijo | Method and apparatus for removing scales deposited on the strainer of a pulp digester |
| JPH10168775A (en) * | 1996-11-29 | 1998-06-23 | Oji Paper Co Ltd | Washing of screen part of diffuser washer |
| JPH1161672A (en) * | 1997-08-07 | 1999-03-05 | Nippon Paper Ind Co Ltd | Cleaning of diffusion cleaning screen |
| CN1531615A (en) * | 2001-04-16 | 2004-09-22 | 巴科曼实验室国际公司 | Process and apparatus for removal of scale build-up |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316863A (en) * | 2013-07-10 | 2013-09-25 | 瓮福（集团）有限责任公司 | Filter deposit cleaning method |
| CN103721970A (en) * | 2013-12-19 | 2014-04-16 | 攀钢集团工程技术有限公司 | Cleaning device and method for cleaning cooler of desulfurization system |
| CN103721970B (en) * | 2013-12-19 | 2015-09-02 | 攀钢集团工程技术有限公司 | For cleaning cleaning device and the method for the cooler of desulphurization system |
| CN106245398A (en) * | 2016-08-31 | 2016-12-21 | 玖龙纸业（太仓）有限公司 | The de-sludging device of a kind of deinking line polydisc and de-sludging method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102601083B (en) | 2014-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102601083B (en) | Washing device of scaling substances on surface of pulp washer and washing method of scaling substances on surface of pulp washer | |
| CN103665191A (en) | Preparation method of chitosan and immersion device for preparing chitosan | |
| CN110736385B (en) | Descaling process for cubic filler of cooling tower in power plant | |
| CN104358176B (en) | A kind of mthod of white water from paper making recovery system | |
| CN103191594B (en) | Acid scale removing device of filter press and acid scale removing process of filter press | |
| CN202490504U (en) | Purification recovery device of mercerizing waste alkali liquor | |
| CN216677249U (en) | Candle type filter cloth regenerating device | |
| CN202732318U (en) | Liquid ring pump capable of preventing excessive crystal accumulation | |
| CN106315709B (en) | Purification method and application of white liquor recovered from pulping alkali | |
| JP5246908B2 (en) | Deposit cleaning method | |
| CN113751441B (en) | Method for cleaning scale on inner wall of evaporator in nickel sulfate production process | |
| CN100528383C (en) | Plate-type down-film evaporator descaling method | |
| CN213287252U (en) | Sea sand clarification plant | |
| CN106390606A (en) | Cleansing method of sintered metal felt strainer | |
| CN102631906A (en) | Regeneration method of active carbon for phosphoric acid bleaching tower | |
| CN102329015A (en) | High-efficiency scale inhibitor | |
| CN100497809C (en) | Process for pulping by biochemical solvent | |
| CN202010512U (en) | Flue gas desulfuration device of non-ferrous metal processing waste liquid management coal-water slurry boiler | |
| CN206886717U (en) | Reverse-flow string cleaning device inside a kind of MVR evaporators plate | |
| EP2905360A1 (en) | Continuous electrolysis method by means of electrolytic bath for polysulfide manufacturing, and electrolysis device for implementing same | |
| KR101078108B1 (en) | Lime scale killer cleaning loop system | |
| CN205851503U (en) | A kind of on-line cleaning device of calandria plasma discharge tube | |
| CN215480323U (en) | Nitric acid recycling system | |
| CN108002603A (en) | Paper-making drying cylinder and boiler water cycle processing system and processing method | |
| CN214780915U (en) | Safe and efficient inner-cooling water resin regeneration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 418005 Huaihua Industrial Park, Hunan, Huaihua Patentee after: Hunan Jun Thai New Materials Technology Co. Ltd. Address before: 418005 Huaihua Industrial Park, Hunan, Huaihua Patentee before: Hu'nan Juntai Pulp Paper Co., Ltd. |