CN103014738B - Pickling system - Google Patents
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- CN103014738B CN103014738B CN201210564706.1A CN201210564706A CN103014738B CN 103014738 B CN103014738 B CN 103014738B CN 201210564706 A CN201210564706 A CN 201210564706A CN 103014738 B CN103014738 B CN 103014738B
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Abstract
The invention relates to the technical field of sea water desalinization, and in particular to a pickling system. The pickling system is used for simplifying the structure thereof and reducing the manufacture cost thereof. The invention discloses the pickling system, which comprises a pickling liquor box, an acid adding pump communicated with the pickling liquor box, an acid adding pipe with one end communicated with a liquid outlet of the acid adding pump, a pickling liquid feeding device communicated with the other end of the acid adding pipe and enabling the pickling liquid to enter a low-temperature multiple-effect sea water desalinization system, a pickling liquor preparation circulation pipe communicated with the liquid outlet of the acid adding pump, wherein one end of the pickling liquor preparation circulation pipe stretches into the pickling liquor box, an acid adding valve arranged on the acid adding pipe, and a pickling liquor preparation circulating valve arranged on the pickling liquor preparation circulating pipe. According to the invention, a stirrer is omitted; and the structure of the pickling system is simplified, so that the manufacture cost of the pickling system is reduced.
Description
Technical field
The present invention relates to field of sea water desalting technology, particularly a kind of pickling system.
Background technology
Low temperature multi-effect seawater desalting system is in operational process, and seawater is concentrated in the heat transfer tube surface evaporation of each single-effect evaporator, easily produces scale formation, thereby reduces the heat exchange efficiency between seawater and steam; Therefore, need to remove the lip-deep fouling of heat transfer tube at vaporizer.
At present, the method that general using pickling system injects pickle solution to the each single-effect evaporator in low temperature multi-effect seawater desalting system is removed the lip-deep dirt of heat transfer tube at vaporizer.Because the heat exchange tube material of vaporizer is mostly aluminum brass or aluminium alloy, in order to alleviate the corrosion of the heat transfer tube of pickle solution to vaporizer, the main component of pickle solution is thionamic acid, thionamic acid is a kind of solid acid, dissolution rate under normal temperature in water is slower, therefore needs stirrer to stir and makes thionamic acid accelerate dissolution.Particularly, using thionamic acid and containing sour fresh water or seawater after lysate adds acid solution case, under the effect of stirrer, make thionamic acid accelerate dissolution, be mixed with and there is certain density pickle solution, pickle solution is sent into the each single-effect evaporator in low temperature multi-effect seawater desalting system, clean the heat transfer tube surface of each single-effect evaporator, remove fouling.
But, in above-mentioned pickling system, utilize the solid-state thionamic acid of stirrer accelerate dissolution, increased the complicacy of pickling system, and, the cost of manufacture of pickling system also increased.
Summary of the invention
The object of the present invention is to provide a kind of pickling system, for simplifying the structure of pickling system, reduce the cost of manufacture of pickling system.
To achieve these goals, the invention provides following technical scheme:
A kind of pickling system, comprising:
Acid solution case;
Acid adding pump, the fluid inlet of described acid adding pump is communicated with described acid solution case;
Add acid tube, described in add acid tube one end and be communicated with the liquid outlet of described acid adding pump;
Be communicated with the described acid tube the other end that adds, make pickle solution enter the pickle solution feeding device of low temperature multi-effect seawater desalting system;
Acid solution preparation circulation tube, described acid solution preparation circulation tube one end is communicated with the liquid outlet of described acid adding pump, and the described acid solution preparation circulation tube the other end stretches in described acid solution case;
And described in being arranged on, add the acid adding valve on acid tube, be arranged on the acid solution preparation recycle valve on described acid solution preparation circulation tube;
Wherein, described pickle solution feeding device comprises:
Acid picking pump, the fluid inlet of described acid picking pump with described in add acid tube and be communicated with;
Pickling house steward, one end of described pickling house steward is communicated with the liquid outlet of described acid picking pump, and the other end is communicated with the fluid inlet of the each single-effect evaporator in low temperature multi-effect seawater desalting system;
Communicating pipe between the effect being communicated with the liquid outlet of the each single-effect evaporator in low temperature multi-effect seawater desalting system, and be communicated with the fluid inlet of described acid picking pump communicating pipe between described effect;
With the acid solution delivery pipe being communicated with communicating pipe between described effect, and be arranged on the acid solution bleed valve on acid solution delivery pipe;
The pickle solution recovery tube being communicated with described pickling house steward and described acid solution case respectively, and be arranged on the acid return valve in described pickle solution recovery tube.
Preferably, described acid solution preparation circulation tube comprises: the first stereoplasm tube being communicated with the liquid outlet of described acid adding pump, the second stereoplasm tube in described acid solution case is stretched in one end, and is communicated with the flexible pipe of described the first stereoplasm tube and described the second stereoplasm tube.
Preferably, described acid solution preparation recycle valve is arranged on described the first stereoplasm tube.
Preferably, described acid picking pump is brine discharge pump or the seawater fresh feed pump in low temperature multi-effect seawater desalting system.
Further, described pickle solution feeding device also comprises: be arranged on described pickling house steward upper, and the strainer adjacent with the liquid outlet of described acid picking pump.
Preferably, described strainer is basket filter.
Further, described pickle solution feeding device also comprises: multiple the first pickling valves that are arranged in parallel on described pickling house steward and are communicated with the fluid inlet of the each single-effect evaporator in corresponding low temperature multi-effect seawater desalting system respectively.
Further, described pickle solution feeding device also comprises: multiple the second pickling valves that are arranged in parallel between described effect on communicating pipe and are communicated with the liquid outlet of the each single-effect evaporator in corresponding low temperature multi-effect seawater desalting system respectively.
While preparing pickle solution, first in acid solution case, add solid thionamic acid and lysate, close acid adding valve, open acid solution preparation recycle valve, start acid adding pump, utilize the acid solution flowing out from acid solution preparation circulation tube to stir still undissolved solid-state thionamic acid, so circulate until solid-state thionamic acid dissolves completely.While adopting pickling system provided by the invention to carry out pickling to low temperature multi-effect seawater desalting system, close acid solution preparation recycle valve, open acid adding valve, under the effect of acid adding pump, pickle solution is flowed in pickle solution feeding device, thereby complete the cleaning to the each single-effect evaporator in low temperature multi-effect seawater desalting system.Pickling system provided by the invention has reduced the stirrer dissolving for accelerating solid-state thionamic acid, utilize the propulsion source of acid adding pump as accelerate dissolution thionamic acid, make the pickle solution flowing out from acid solution preparation circulation tube impact stirring thionamic acid solid, accelerate thionamic acid dissolution of solid, therefore, compared with existing pickling system, simplify the structure of pickling system, reduce the cost of manufacture of pickling system.
Brief description of the drawings
The structural representation of a kind of pickling system that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of pickling system that Fig. 2 provides for the specific embodiment of the invention.
Reference numeral:
1-acid solution case, 2-acid adding pump, 3-adds acid tube, 4-acid adding valve, 5-pickle solution feeding device,
6-acid solution preparation recycle valve, 7-the first stereoplasm tube, 8-flexible pipe, 9-the second stereoplasm tube,
10-acid picking pump, 11-strainer, 12-pickling house steward, 13-the first pickling valve,
Communicating pipe between 14-effect, 15-the second pickling valve, 16-acid solution delivery pipe, 17-acid solution bleed valve,
18-pickle solution recovery tube, 19-acid return valve, 20-vaporizer.
Embodiment
In existing pickling system, utilize the solid-state thionamic acid of stirrer accelerate dissolution, increased the complicacy of pickling system, and, the cost of manufacture of pickling system also increased.
In view of this, the invention provides a kind of pickling system, reduce the stirrer dissolving for accelerating solid-state thionamic acid, utilize the propulsion source of acid adding pump as accelerate dissolution thionamic acid, make the pickle solution flowing out from acid solution preparation circulation tube impact stirring thionamic acid solid, accelerate thionamic acid dissolution of solid; Thereby simplify the structure of pickling system, reduced the cost of manufacture of pickling system.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As shown in Figure 1, the embodiment of the present invention provides a kind of pickling system, comprising:
Acid solution case 1;
Acid adding pump 2, the fluid inlet of acid adding pump 2 is communicated with acid solution case 1;
Add acid tube 3, add acid tube 3 one end and be communicated with the liquid outlet of acid adding pump 2;
With add acid tube 3 the other ends and be communicated with, make pickle solution enter the pickle solution feeding device 5 of low temperature multi-effect seawater desalting system;
Acid solution preparation circulation tube, acid solution preparation circulation tube one end is communicated with the liquid outlet of acid adding pump 2, and the acid solution preparation circulation tube the other end stretches in acid solution case 1;
And be arranged on the acid adding valve 4 adding on acid tube 3, be arranged on the acid solution preparation recycle valve 6 on acid solution preparation circulation tube.
While preparing pickle solution, first in acid solution case 1, add solid thionamic acid and lysate, close acid adding valve 4, open acid solution preparation recycle valve 6, start acid adding pump 2, utilize the acid solution flowing out from acid solution preparation circulation tube to stir still undissolved solid-state thionamic acid, so circulate until solid-state thionamic acid dissolves completely.While adopting pickling system provided by the invention to carry out pickling to low temperature multi-effect seawater desalting system, close acid solution preparation recycle valve 6, open acid adding valve 4, under the effect of acid adding pump, pickle solution is flowed in pickle solution feeding device 5, thereby complete the cleaning to the each single-effect evaporator in low temperature multi-effect seawater desalting system.Pickling system provided by the invention has reduced the stirrer dissolving for accelerating solid-state thionamic acid, utilize the propulsion source of acid adding pump 2 as accelerate dissolution thionamic acid, make the pickle solution flowing out from acid solution preparation circulation tube impact stirring thionamic acid solid, accelerate thionamic acid dissolution of solid, therefore, compared with existing pickling system, simplify the structure of pickling system, reduce the cost of manufacture of pickling system.
Preferably, above-mentioned acid solution preparation circulation tube comprises: the first stereoplasm tube 7 being communicated with the liquid outlet of acid adding pump 2, and the second stereoplasm tube 9 in acid solution case 1 is stretched in one end, and is communicated with the flexible pipe 8 of the first stereoplasm tube 7 and the second stereoplasm tube 9; In the specific implementation, the first stereoplasm tube 7 and the second stereoplasm tube 9 can be metal tube or Glass Steel Tube.In the time of configuration pickle solution, utilize the acid solution flowing out from the second stereoplasm tube 12 to impact and stir thionamic acid solid, make thionamic acid solid accelerate dissolution, adopt and dissolve in this way amino sulfonic acid solid body, avoid the dead angle that in dissolution process, acid solution case 1 exists, make dissolving more abundant, accelerated dissolution rate.
Preferably, above-mentioned acid solution preparation recycle valve 6 is arranged on the first stereoplasm tube 7.
As shown in Figure 2, preferably, above-mentioned pickle solution feeding device 5 comprises:
Acid picking pump 10, the fluid inlet of acid picking pump 10 with add acid tube 3 and be communicated with;
Pickling house steward 12, one end of pickling house steward 12 is communicated with the liquid outlet of acid picking pump 10, and the other end is communicated with the fluid inlet of the each single-effect evaporator 20 in low temperature multi-effect seawater desalting system;
Communicating pipe 14 between the effect being communicated with the liquid outlet of the each single-effect evaporator 20 in low temperature multi-effect seawater desalting system, and be communicated with the fluid inlet of acid picking pump 10 communicating pipe 14 between effect;
With the acid solution delivery pipe 17 being communicated with communicating pipe 14 between effect;
And be arranged on the acid solution bleed valve 16 on acid solution delivery pipe 17.
Say in further detail, in the pickling system providing at the present embodiment, acid solution case 1 is communicated with the fluid inlet of acid adding pump 2 by adding acid tube 3, the liquid outlet of acid adding pump 2 is communicated with acid adding valve 4 by adding acid tube 3, acid adding valve 4 is communicated with the fluid inlet of acid picking pump 10, the liquid outlet of acid picking pump 10 is communicated with the fluid inlet of the each single-effect evaporator 20 in low temperature multi-effect seawater desalting system by pickling house steward 12, the liquid outlet of each single-effect evaporator 20 is communicated with communicating pipe 14 respectively with between effect, between effect, communicating pipe 14 is communicated with acid solution delivery pipe 17, on acid solution delivery pipe 17, be provided with acid solution bleed valve 16, the liquid outlet of acid adding pump 2 is also communicated with acid solution preparation circulation tube, with the first stereoplasm tube 7, flexible pipe 8 and the second stereoplasm tube 9 are communicated with.
In the time that the each single-effect evaporator 20 in low temperature multi-effect seawater desalting system needs pickling de-sludging, first in the interior preparating acid washing lotion of acid solution case 1.Concrete grammar is: in acid solution case 1, add a certain amount of thionamic acid solid and lysate, close acid adding valve 4, open acid solution preparation recycle valve 6, start acid adding pump 2, acid solution is circulated between acid solution preparation circulation tube and acid solution case 1, utilize the propulsion source of acid adding pump 2 as accelerate dissolution thionamic acid, acid solution is circulated between the first stereoplasm tube 7, flexible pipe 8, the second stereoplasm tube 9 and acid solution case 1, the acid solution flowing out from the second stereoplasm tube 9 is stirred still undissolved solid thionamic acid, until solid thionamic acid dissolves completely.Therefore, compared with prior art, pickling system provided by the invention has reduced stirrer, thereby has simplified the structure of pickling system, has reduced the cost of manufacture of pickling system.
While utilizing above-mentioned pickling system to carry out pickling to low temperature multi-effect seawater desalting system, close acid solution preparation recycle valve 6, open acid adding valve 4, start acid adding pump 2 and acid picking pump 10, pickle solution enters in the shell of the each single-effect evaporator 20 in low temperature multi-effect seawater desalting system, clean the lip-deep dirt of heat transfer tube at each single-effect evaporator 20, pickle solution is at each single-effect evaporator 20, communicating pipe 14 between effect, in the loop that acid picking pump 10 and pickling house steward 12 form, circulate, thereby complete the cleaning on the heat transfer tube surface to each single-effect evaporator 20, acid solution after pickling in low temperature multi-effect seawater desalting system is discharged by acid solution delivery pipe 17.
Continue referring to Fig. 2, preferably, for the structure of the above-mentioned pickling system of simplification further, preferably, acid picking pump 10 is brine discharge pump or the seawater fresh feed pump in low temperature multi-effect seawater desalting system.Utilize in the present embodiment brine discharge pump in low temperature multi-effect seawater desalting system as acid picking pump 10.
For the impurity circulation in communicating pipe 14 between acid picking pump 10, pickling house steward 12, each single-effect evaporator 20 and effect that prevents that pickling from getting off, and the infringement of minimizing to above-mentioned parts, further, above-mentioned pickle solution feeding device 5 also comprises: is arranged on pickling house steward 12, and the strainer 11 adjacent with acid picking pump 10 liquid outlets; For fear of frequent replacing or cleaning and filtering 11, preferably, above-mentioned strainer 11 is basket filter.So arrange, strainer 11 filters out the impurity in recycle acid washing lotion, has avoided obstruction pickling shower nozzle, has improved pickling effect.
Continue referring to Fig. 2, pickle solution is circulation in communicating pipe 14 between acid picking pump 10, pickling house steward 12, each single-effect evaporator 20 and effect, after pickling for some time, the concentration of pickle solution can reduce, cause pickling removing the dirt on the heat transfer tube surface of each single-effect evaporator 20, the pickle solution remaining in after these pickling in low temperature multi-effect seawater desalting system and pickling house steward 12 is discharged by acid solution delivery pipe 18, pollute the environment, and in the time that the pickle solution of discharging is more, also increase the expense of subsequent disposal discharge pickle solution.Preferably, above-mentioned pickle solution feeding device 5 also comprises: the pickle solution recovery tube 18 being communicated with pickling house steward 12 and acid solution case 1 respectively, is arranged on the acid return valve 19 in pickle solution recovery tube 18.In to multiple-effect evaporator 20 cycle picklings, the concentration of timing sampling analysis pickle solution on pickling house steward 12, in the time that the concentration of pickle solution is less than 2%, in acid solution case 1, add thionamic acid solid, open acid return valve 16, using a part of concentration in low temperature multi-effect seawater desalting system and pickling house steward 12 be less than 2% pickle solution enter acid solution case 1 in as lysate, for dissolving the thionamic acid solid of acid solution case 1, make the strength of solution in acid solution case 1 reach prescribed value.The method of dissolving is still by acid solution prepares circulating line, utilizes the circulation acid solution wherein flowing out to stir still undissolved thionamic acid solid of acid solution case 1 bottom.To have certain density pickle solution reclaims, reduced solid thionamic acid consumption, the pickle solution that is 5%～7% for compound concentration, when the pickle solution concentration of using as lysate is 2%, can save solid thionamic acid consumption 40%～60%, thereby save the cost of relieving haperacidity washing lotion; And pollution to environment and subsequent disposal are reduced and have discharged the expense of acid solution.
Each single-effect evaporator 20 in existing low temperature multi-effect seawater desalting system in the course of the work temperature lowers gradually, and seawater easier fouling in high vaporizer 20 shells of temperature, that is to say, while utilizing pickling system to each single-effect evaporator 20 pickling in low temperature multi-effect seawater desalting system, sometimes only need to clean wherein a certain effect or a few single-effect evaporator 20, do not need all evaporators in low temperature multi-effect seawater desalting system all to carry out pickling, therefore, in order to reduce pickle solution waste, and the corrosion of the heat transfer tube of pickle solution to each single-effect evaporator 20, above-mentioned pickle solution feeding device further comprises: be arranged in parallel on pickling house steward 12, and multiple the first pickling valves 13 that are communicated with the fluid inlet of the each single-effect evaporator 20 in corresponding low temperature multi-effect seawater desalting system respectively, and multiple the second pickling valves 15 that are arranged in parallel between effect on communicating pipe 14 and are communicated with the liquid outlet of the each single-effect evaporator 20 in corresponding low temperature multi-effect seawater desalting system respectively.For example, continue referring to Fig. 2, low temperature multi-effect seawater desalting system comprises sextuple-effect evaporator 20, when need to be to the highest the first single-effect evaporator 20 pickling of temperature, close the first pickling valve 13 and the second pickling valve 15 of other quintuple effect evaporator 20 correspondences, only pickling circulation in the first single-effect evaporator 20 of pickle solution, completes the cleaning to the first single-effect evaporator 20.
In sum, pickling system provided by the invention, in the time preparing pickle solution, utilizes the propulsion source of acid adding pump as accelerate dissolution thionamic acid, makes the pickle solution flowing out from acid solution preparation circulation tube impact stirring thionamic acid solid, accelerates thionamic acid dissolution of solid; Therefore, compared with existing pickling system, simplify the structure of pickling system, reduced the cost of manufacture of pickling system.
In addition, in pickling system provided by the invention, increase pickle solution recycling pipeline, improved the utilization ratio of pickle solution, reduced the consumption of thionamic acid solid; The pickle solution that is 5%～7% for compound concentration, when the pickle solution concentration of using is 2%, can save solid thionamic acid consumption 40%～60% as lysate, thereby has saved the cost of relieving haperacidity washing lotion; And pollution to environment and subsequent disposal are reduced and have discharged the expense of acid solution.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. for cleaning a pickling system for low temperature multi-effect seawater desalting system, it is characterized in that, comprising:
Acid solution case;
Acid adding pump, the fluid inlet of described acid adding pump is communicated with described acid solution case;
Add acid tube, described in add acid tube one end and be communicated with the liquid outlet of described acid adding pump;
Be communicated with the described acid tube the other end that adds, make pickle solution enter the pickle solution feeding device of low temperature multi-effect seawater desalting system;
Acid solution preparation circulation tube, described acid solution preparation circulation tube one end is communicated with the liquid outlet of described acid adding pump, and the described acid solution preparation circulation tube the other end stretches in described acid solution case;
And described in being arranged on, add the acid adding valve on acid tube, be arranged on the acid solution preparation recycle valve on described acid solution preparation circulation tube;
Wherein, described pickle solution feeding device comprises:
Acid picking pump, the fluid inlet of described acid picking pump with described in add acid tube and be communicated with;
Pickling house steward, one end of described pickling house steward is communicated with the liquid outlet of described acid picking pump, and the other end is communicated with the fluid inlet of the each single-effect evaporator in low temperature multi-effect seawater desalting system;
Communicating pipe between the effect being communicated with the liquid outlet of the each single-effect evaporator in low temperature multi-effect seawater desalting system, and be communicated with the fluid inlet of described acid picking pump communicating pipe between described effect;
With the acid solution delivery pipe being communicated with communicating pipe between described effect, and be arranged on the acid solution bleed valve on acid solution delivery pipe;
The pickle solution recovery tube being communicated with described pickling house steward and described acid solution case respectively, and be arranged on the acid return valve in described pickle solution recovery tube.
2. pickling system as claimed in claim 1, it is characterized in that, described acid solution preparation circulation tube comprises: the first stereoplasm tube being communicated with the liquid outlet of described acid adding pump, the second stereoplasm tube in described acid solution case is stretched in one end, and is communicated with the flexible pipe of described the first stereoplasm tube and described the second stereoplasm tube.
3. pickling system as claimed in claim 2, is characterized in that, described acid solution preparation recycle valve is arranged on described the first stereoplasm tube.
4. pickling system as claimed in claim 1, is characterized in that, described acid picking pump is brine discharge pump or the seawater fresh feed pump in low temperature multi-effect seawater desalting system.
5. pickling system as claimed in claim 4, is characterized in that, described pickle solution feeding device also comprises: be arranged on described pickling house steward upper, and the strainer adjacent with the liquid outlet of described acid picking pump.
6. pickling system as claimed in claim 5, is characterized in that, described strainer is basket filter.
7. the pickling system as described in claim 1～6 any one, it is characterized in that, described pickle solution feeding device also comprises: multiple the first pickling valves that are arranged in parallel on described pickling house steward and are communicated with the fluid inlet of the each single-effect evaporator in corresponding low temperature multi-effect seawater desalting system respectively.
8. pickling system as claimed in claim 7, it is characterized in that, described pickle solution feeding device also comprises: multiple the second pickling valves that are arranged in parallel between described effect on communicating pipe and are communicated with the liquid outlet of the each single-effect evaporator in corresponding low temperature multi-effect seawater desalting system respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210564706.1A CN103014738B (en) | 2012-12-21 | 2012-12-21 | Pickling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564706.1A CN103014738B (en) | 2012-12-21 | 2012-12-21 | Pickling system |
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| CN103014738A CN103014738A (en) | 2013-04-03 |
| CN103014738B true CN103014738B (en) | 2014-10-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108330497B (en) * | 2018-04-02 | 2023-09-26 | 天津国投津能发电有限公司 | Chemical cleaning device and cleaning method for low-temperature multi-effect seawater desalination device |
| CN109019780A (en) * | 2018-07-27 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | In a kind of pickling and cleaning device |
| CN111155116A (en) * | 2018-11-08 | 2020-05-15 | 福建省青山纸业股份有限公司 | Novel process operation method for recovering green liquor pipe by using amino xanthic acid cleaning alkali |
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| CN2151986Y (en) * | 1993-03-26 | 1994-01-05 | 员云星 | Closed acid cleaning device |
| CN201506835U (en) * | 2009-08-19 | 2010-06-16 | 山西太钢不锈钢股份有限公司 | Device capable of preventing ferruginous sludge in acid tank from precipitating |
| CN102094211A (en) * | 2009-12-14 | 2011-06-15 | 中国神华能源股份有限公司 | Acid washing system of low-temperature multi-effect seawater desalting equipment |
| CN202989290U (en) * | 2012-12-21 | 2013-06-12 | 中国电子工程设计院 | Pickling system |
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2012
- 2012-12-21 CN CN201210564706.1A patent/CN103014738B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151986Y (en) * | 1993-03-26 | 1994-01-05 | 员云星 | Closed acid cleaning device |
| CN201506835U (en) * | 2009-08-19 | 2010-06-16 | 山西太钢不锈钢股份有限公司 | Device capable of preventing ferruginous sludge in acid tank from precipitating |
| CN102094211A (en) * | 2009-12-14 | 2011-06-15 | 中国神华能源股份有限公司 | Acid washing system of low-temperature multi-effect seawater desalting equipment |
| CN202989290U (en) * | 2012-12-21 | 2013-06-12 | 中国电子工程设计院 | Pickling system |
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Effective date of registration: 20170627 Address after: 100034 Beijing, Fuchengmen, North Street, No. 6 -6 international investment building, block A, Co-patentee after: Chinese Electronic Engineering Design Institute Patentee after: STATE DEVELOPMENT & INVESTMENT CORPORATION (SDIC) Address before: 100840 Haidian District, Wanshou Road, No. 27, Patentee before: Chinese Electronic Engineering Design Institute |
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