CN202989290U - Pickling system - Google Patents
Pickling system Download PDFInfo
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- CN202989290U CN202989290U CN 201220717841 CN201220717841U CN202989290U CN 202989290 U CN202989290 U CN 202989290U CN 201220717841 CN201220717841 CN 201220717841 CN 201220717841 U CN201220717841 U CN 201220717841U CN 202989290 U CN202989290 U CN 202989290U
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Abstract
The utility model relates to a technical field of seawater desalination, and in particular relates to a pickling system for simplifying the structure of the pickling system and lowering the manufacturing cost of the pickling system. The pickling system which is disclosed by the utility model comprises an acid liquid tank, an acid supply pump, an acid supply pipe, a pickling liquid feeding device, an acid liquid preparation circulation pipe, an acid supply valve and an acid liquid preparation circulation valve, wherein the acid supply pump is connected with the acid liquid tank, one end of the acid supply pipe is communicated with the liquid outlet of the acid supply pump; the pickling liquid feeding device is communicated with the other end of the acid supply pipe so that the pickling liquid enters a low-temperature multi-effective seawater desalination system; the acid liquid preparation circulation pipe is communicated with the liquid outlet of the acid supply pump; one end of the acid liquid preparation circulation pipe stretches into the acid liquid tank; the acid supply valve is arranged on the acid supply pipe; and the acid liquid preparation circulation valve is arranged on the acid liquid preparation circulation pipe. No stirrer is arranged in the pickling system, and the structure of the pickling structure is simplified, so that the manufacturing cost of the pickling system is reduced.
Description
Technical field
The utility model 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 in the lip-deep fouling of the heat transfer tube of vaporizer.
At present, the general using pickling system is removed at the lip-deep dirt of the heat transfer tube of vaporizer to the method that each single-effect evaporator in low temperature multi-effect seawater desalting system injects pickle solution.Because the heat exchange tube material of vaporizer mostly is greatly aluminum brass or aluminium alloy, in order to alleviate pickle solution to the corrosion of the heat transfer tube of 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 the thionamic acid accelerate dissolution.Particularly, with thionamic acid with do not contain the fresh water of acid or after seawater adds the acid solution case as lysate, make the thionamic acid accelerate dissolution under the effect of stirrer, be mixed with and have certain density pickle solution, pickle solution is sent into 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.
The utility model content
The purpose of this utility model is to provide a kind of pickling system, is used for simplifying the structure of pickling system, reduces the cost of manufacture of pickling system.
To achieve these goals, the utility model provides following technical scheme:
A kind of pickling system comprises:
The acid solution case;
The acid adding pump, the fluid inlet of described acid adding pump is communicated with described acid solution case;
Add acid tube, described acid tube one end that adds is 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 be arranged on the described acid adding valve that adds on acid tube, be arranged on the acid solution preparation recycle valve on described acid solution preparation circulation tube.
Preferably, described acid solution preparation circulation tube comprises: with the first stereoplasm tube that the liquid outlet of described acid adding pump is communicated with, an end stretches into the second stereoplasm tube in described acid solution case, and the flexible pipe that is communicated with 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 pickle solution feeding device comprises:
Acid picking pump, the fluid inlet of described acid picking pump is communicated with the described acid tube that adds;
The pickling house steward, described pickling house steward's a end is communicated with the liquid outlet of described acid picking pump, and the fluid inlet of each single-effect evaporator in the other end and low temperature multi-effect seawater desalting system is communicated with;
With communicating pipe between effect that the liquid outlet of each single-effect evaporator in low temperature multi-effect seawater desalting system is communicated with, and be communicated with the fluid inlet of described acid picking pump communicating pipe between described effect;
With the acid solution delivery pipe that is communicated with communicating pipe between described effect;
And be arranged on acid solution bleed valve on the acid solution delivery pipe.
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, and the strainer adjacent with the liquid outlet of described acid picking pump.
Preferably, described strainer is basket filter.
Preferably, described pickle solution feeding device also comprises: the pickle solution recovery tube that is communicated with described pickling house steward and described acid solution case respectively, and be arranged on acid return valve on described pickle solution recovery tube.
Further, described pickle solution feeding device also comprises: be arranged in parallel on described pickling house steward and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the first pickling valves of being communicated with of the fluid inlet of each single-effect evaporator.
Further, described pickle solution feeding device also comprises: be arranged in parallel between described effect on communicating pipe and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the second pickling valves of being communicated with of the liquid outlet of each single-effect evaporator.
During the preparation pickle solution, at first add solid thionamic acid and lysate in the acid solution case, close acid adding valve, open acid solution preparation recycle valve, start the acid adding pump, the acid solution that utilization is flowed out from acid solution preparation circulation tube is stirred still undissolved solid-state thionamic acid, so circulates until solid-state thionamic acid dissolves fully.When the pickling system that adopts the utility model to provide carries 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 the pickle solution feeding device, thereby complete cleaning to each single-effect evaporator in low temperature multi-effect seawater desalting system.The pickling system that the utility model provides has reduced the stirrer that is used for accelerating solid-state thionamic acid dissolving, utilize the acid adding pump as the propulsion source of accelerate dissolution thionamic acid, the pickle solution that flows out from acid solution preparation circulation tube is impacted stir the thionamic acid solid, accelerate the thionamic acid dissolution of solid, therefore, compare with existing pickling system, simplified the structure of pickling system, reduced the cost of manufacture of pickling system.
Description of drawings
The structural representation of a kind of pickling system that Fig. 1 provides for the utility model embodiment;
The structural representation of a kind of pickling system that Fig. 2 provides for the utility model specific embodiment.
Reference numeral:
1-acid solution case, 2-acid adding pump, 3-adds acid tube, the 4-acid adding valve, 5-pickle solution feeding device,
6-acid solution preparation recycle valve, 7-the first stereoplasm tube, the 8-flexible pipe, 9-the second stereoplasm tube,
The 10-acid picking pump, the 11-strainer, 12-pickling house steward, 13-the first pickling valve,
Communicating pipe between the 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 utility model provides a kind of pickling system, reduced the stirrer that is used for accelerating solid-state thionamic acid dissolving, utilize the acid adding pump as the propulsion source of accelerate dissolution thionamic acid, the pickle solution that flows out from acid solution preparation circulation tube is impacted stir the thionamic acid solid, accelerate the thionamic acid dissolution of solid; Thereby simplified the structure of pickling system, reduced the cost of manufacture of pickling system.
In order to make those skilled in the art better understand the technical solution of the utility model, below in conjunction with Figure of description, the utility model embodiment is described in detail.
As shown in Figure 1, the utility model embodiment provides a kind of pickling system, comprising:
Add acid tube 3, add acid tube 3 one ends 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 that adds on acid tube 3, be arranged on the acid solution preparation recycle valve 6 on acid solution preparation circulation tube.
During the preparation pickle solution, at first add solid thionamic acid and lysate in acid solution case 1, close acid adding valve 4, open acid solution preparation recycle valve 6, start acid adding pump 2, the acid solution that utilization is flowed out from acid solution preparation circulation tube is stirred still undissolved solid-state thionamic acid, so circulates until solid-state thionamic acid dissolves fully.When the pickling system that adopts the utility model to provide carries 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 cleaning to each single-effect evaporator in low temperature multi-effect seawater desalting system.The pickling system that the utility model provides has reduced the stirrer that is used for accelerating solid-state thionamic acid dissolving, utilize acid adding pump 2 as the propulsion source of accelerate dissolution thionamic acid, the pickle solution that flows out from acid solution preparation circulation tube is impacted stir the thionamic acid solid, accelerate the thionamic acid dissolution of solid, therefore, compare with existing pickling system, simplified the structure of pickling system, reduced the cost of manufacture of pickling system.
Preferably, above-mentioned acid solution preparation circulation tube comprises: the first stereoplasm tube 7, one ends that are communicated with the liquid outlet of acid adding pump 2 stretch into the second stereoplasm tube 9 in acid solution case 1, and the flexible pipe 8 that is communicated with 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.When the configuration pickle solution, the acid solution that utilization is flowed out from the second stereoplasm tube 12 is impacted and is stirred the thionamic acid solid, make thionamic acid solid accelerate dissolution, adopt this mode to dissolve amino sulfonic acid solid body, avoided the dead angle that in the 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:
Pickling house steward 12, an end of pickling house steward 12 is communicated with the liquid outlet of acid picking pump 10, and the fluid inlet of each single-effect evaporator 20 in the other end and low temperature multi-effect seawater desalting system is communicated with;
With communicating pipe 14 between effect that the liquid outlet of each single-effect evaporator 20 in low temperature multi-effect seawater desalting system is communicated with, and be communicated with the fluid inlet of acid picking pump 10 communicating pipe 14 between effect;
With the acid solution delivery pipe 17 that is communicated with communicating pipe 14 between effect;
And be arranged on acid solution bleed valve 16 on acid solution delivery pipe 17.
say in further detail, in the pickling system that the present embodiment provides, 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 by the fluid inlet of each single-effect evaporator 20 in pickling house steward 12 and low temperature multi-effect seawater desalting system, 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, be provided with acid solution bleed valve 16 on acid solution delivery pipe 17, the liquid outlet of acid adding pump 2 also is communicated with acid solution preparation circulation tube, namely with the first stereoplasm tube 7, flexible pipe 8 and the second stereoplasm tube 9 are communicated with.
When each single-effect evaporator 20 in low temperature multi-effect seawater desalting system needs the pickling de-sludging, at first in the interior preparating acid washing lotion of acid solution case 1.Concrete grammar is: add a certain amount of thionamic acid solid and lysate in acid solution case 1, 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, namely utilize acid adding pump 2 as the propulsion source of 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, stir still undissolved solid thionamic acid from the acid solution that the second stereoplasm tube 9 flows out, until till the solid thionamic acid dissolves fully.Therefore, compared with prior art, the pickling system that the utility model provides has reduced stirrer, thereby has simplified the structure of pickling system, has reduced the cost of manufacture of pickling system.
when 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 each single-effect evaporator 20 in low temperature multi-effect seawater desalting system, cleaning is at the lip-deep dirt of the heat transfer tube of each single-effect evaporator 20, pickle solution is at each single-effect evaporator 20, communicating pipe 14 between effect, circulate in the loop that acid picking pump 10 and pickling house steward 12 consist of, thereby complete the cleaning to the heat transfer tube surface of 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.
Continuation is referring to Fig. 2, and preferably, for the structure of further the above-mentioned pickling system of simplification, 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 minimizing is to the infringement of 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 the recycle acid washing lotion, has avoided obstruction pickling shower nozzle, has improved pickling effect.
Continuation is 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 can not pickling removing the dirt on the heat transfer tube surface of each single-effect evaporator 20, the pickle solution that remains 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 when the pickle solution of discharging is more, also increased the expense of subsequent disposal discharge pickle solution.Preferably, above-mentioned pickle solution feeding device 5 also comprises: the pickle solution recovery tube 18 that is communicated with pickling house steward 12 and acid solution case 1 respectively is arranged on the acid return valve 19 on 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, when the concentration of pickle solution less than 2% the time, add the thionamic acid solid in acid solution case 1, open acid return valve 16, as lysate, be used for the thionamic acid solid of dissolving acid solution case 1 during a part of concentration in low temperature multi-effect seawater desalting system and pickling house steward 12 is entered acid solution case 1 less than 2% pickle solution, make the strength of solution in acid solution case 1 reach prescribed value.The method of dissolving is still by acid solution and prepare circulating line, utilizes still undissolved thionamic acid solid of circulation acid solution stirring acid solution case 1 bottom of wherein flowing out.To have certain density pickle solution reclaims, reduced the solid thionamic acid consumption, be 5%～7% pickle solution 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 reduced the pollution of environment and the expense of subsequent disposal discharge acid solution.
each single-effect evaporator 20 in existing low temperature multi-effect seawater desalting system temperature in the course of the work lowers gradually, and seawater easier fouling in high vaporizer 20 shells of temperature, that is to say, when 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 is all carried out pickling, therefore, in order to reduce the pickle solution waste, and pickle solution is to the corrosion of the heat transfer tube of each single-effect evaporator 20, above-mentioned pickle solution feeding device further comprises: be arranged in parallel on pickling house steward 12, and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the first pickling valves 13 of being communicated with of the fluid inlet of each single-effect evaporator 20, and be arranged in parallel between effect on communicating pipe 14 and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the second pickling valves 15 of being communicated with of the liquid outlet of each single-effect evaporator 20.For example, continuation is 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, the cleaning to the first single-effect evaporator 20 is completed in only pickling circulation in the first single-effect evaporator 20 of pickle solution.
In sum, the pickling system that the utility model provides when the preparation pickle solution, utilizes the acid adding pump as the propulsion source of accelerate dissolution thionamic acid, the pickle solution that flows out from acid solution preparation circulation tube is impacted stir the thionamic acid solid, accelerate the thionamic acid dissolution of solid; Therefore, compare with existing pickling system, simplified the structure of pickling system, reduced the cost of manufacture of pickling system.
In addition, in the pickling system that the utility model provides, increase the pickle solution recycling pipeline, improved the utilization ratio of pickle solution, reduced the consumption of thionamic acid solid; Be 5%～7% pickle solution for compound concentration, when the pickle solution concentration of using as lysate is 2%, can saves solid thionamic acid consumption 40%～60%, thereby save the cost of relieving haperacidity washing lotion; And reduced the pollution of environment and the expense of subsequent disposal discharge acid solution.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. a pickling system that is used for cleaning low temperature multi-effect seawater desalting system, is characterized in that, comprising:
The acid solution case;
The acid adding pump, the fluid inlet of described acid adding pump is communicated with described acid solution case;
Add acid tube, described acid tube one end that adds is 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 be arranged on the described acid adding valve that adds on acid tube, be arranged on the acid solution preparation recycle valve on described acid solution preparation circulation tube.
2. pickling system as claimed in claim 1, it is characterized in that, described acid solution preparation circulation tube comprises: with the first stereoplasm tube that the liquid outlet of described acid adding pump is communicated with, an end stretches into the second stereoplasm tube in described acid solution case, and the flexible pipe that is communicated with 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 pickle solution feeding device comprises:
Acid picking pump, the fluid inlet of described acid picking pump is communicated with the described acid tube that adds;
The pickling house steward, described pickling house steward's a end is communicated with the liquid outlet of described acid picking pump, and the fluid inlet of each single-effect evaporator in the other end and low temperature multi-effect seawater desalting system is communicated with;
With communicating pipe between effect that the liquid outlet of each single-effect evaporator in low temperature multi-effect seawater desalting system is communicated with, and be communicated with the fluid inlet of described acid picking pump communicating pipe between described effect;
With the acid solution delivery pipe that is communicated with communicating pipe between described effect;
And be arranged on acid solution bleed valve on the acid solution delivery pipe.
5. pickling system as claimed in claim 4, 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.
6. pickling system as claimed in claim 5, is characterized in that, described pickle solution feeding device also comprises: be arranged on described pickling house steward, and the strainer adjacent with the liquid outlet of described acid picking pump.
7. pickling system as claimed in claim 6, is characterized in that, described strainer is basket filter.
8. described pickling system as arbitrary in claim 4-7, is characterized in that, described pickle solution feeding device also comprises: the pickle solution recovery tube that is communicated with described pickling house steward and described acid solution case respectively, and be arranged on acid return valve on described pickle solution recovery tube.
9. pickling system as claimed in claim 8, it is characterized in that, described pickle solution feeding device also comprises: be arranged in parallel on described pickling house steward and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the first pickling valves of being communicated with of the fluid inlet of each single-effect evaporator.
10. pickling system as claimed in claim 9, it is characterized in that, described pickle solution feeding device also comprises: be arranged in parallel between described effect on communicating pipe and respectively with corresponding low temperature multi-effect seawater desalting system in a plurality of the second pickling valves of being communicated with of the liquid outlet of each single-effect evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717841 CN202989290U (en) | 2012-12-21 | 2012-12-21 | Pickling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717841 CN202989290U (en) | 2012-12-21 | 2012-12-21 | Pickling system |
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| Publication Number | Publication Date |
|---|---|
| CN202989290U true CN202989290U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220717841 Expired - Fee Related CN202989290U (en) | 2012-12-21 | 2012-12-21 | Pickling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014738A (en) * | 2012-12-21 | 2013-04-03 | 中国电子工程设计院 | Pickling system |
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2012
- 2012-12-21 CN CN 201220717841 patent/CN202989290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014738A (en) * | 2012-12-21 | 2013-04-03 | 中国电子工程设计院 | Pickling system |
| CN103014738B (en) * | 2012-12-21 | 2014-10-15 | 中国电子工程设计院 | Pickling system |
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Granted publication date: 20130612 Termination date: 20151221 |
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