CN102500144A - Precision processing system for condensed water and chemical cleaning method for filter element of precision processing system - Google Patents
Precision processing system for condensed water and chemical cleaning method for filter element of precision processing system Download PDFInfo
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- CN102500144A CN102500144A CN2011103506990A CN201110350699A CN102500144A CN 102500144 A CN102500144 A CN 102500144A CN 2011103506990 A CN2011103506990 A CN 2011103506990A CN 201110350699 A CN201110350699 A CN 201110350699A CN 102500144 A CN102500144 A CN 102500144A
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Abstract
The invention discloses a precision processing system for condensed water and a chemical cleaning method for a filter element of the precision processing system. The system comprises powder resin filters, a membrane paving device, a compressed air input device, a backwashing water input device and an effluent collection and discharge device, wherein the membrane paving device comprises a resin mixed box and a membrane paving box; and a heating steam input pipeline I and a heating steam input pipeline II which are connected with heating steam generation equipment are arranged in the resin mixed box and the membrane paving box. The cleaning method comprises the following steps of: 1, performing alkali washing, namely breaking a filter membrane and backwashing, filling water into the filters for later use, preparing alkaline washing liquor for cleaning, cleaning the paved membrane circularly, performing oscillation cleaning and cleaning by the residual alkaline washing liquor; and 2, performing acid washing, filling the water into the filters for later use, preparing acidic washing liquor for cleaning, cleaning the paved membrane circularly, performing the oscillation cleaning and cleaning by the residual acid washing liquor. The precision processing system has a simple structure, is reasonable in design, easy and convenient to operate and control and low in investment cost; and the cleaning method is simple and has a good cleaning effect, and the color of the cleaned filter element is converted into white serving as the original color.
Description
Technical field
The invention belongs to the powdered resin precoat filter applied technical field, especially relate to the chemical cleaning method of a kind of condensed water precision processing system and filter thereof filter unit.
Background technology
In recent years, at the deficient relatively northern area of water resource, Direct Air-cooled Unit has obtained development fast owing to have good water-saving performance.To the characteristics of such condensate, domestic general employing high speed Yang Yin divides bed system and powdered resin precoat filter system two kinds of precision processing technologies.Wherein, Powdered resin precoat filter is high with its equipment powdex adaptive temperature, characteristics such as equipment is simple, handiness become the first-selected condensate precision processing mode of Direct Air-cooled Unit, in Shanxi, ground such as Hebei, the Inner Mongol, Shaanxi, Ningxia have obtained good application.
Powdered resin precoat filter is used for Air-cooled Unit more; In the actual use; Owing to can continue to have the excess load dirt powdered resin precoat filter of flowing through in the Air-cooled Unit test run process, thereby the filter unit of powdered resin precoat filter mainly works to filter foreign material in precision processing system, then behind the use certain phase; Filter unit can be polluted by the foreign material in the system; Make its dirty removal capacities reduce greatly, pressure reduction in service rises too fast, thereby has a strong impact on the economy of powdered resin precoat filter operation.In the actual use; Powdered resin precoat filter is through after moving for a long time; Often find that its filter unit darkens, part also can present black, and the filter unit surface of the power plant that has also has the material of similar grease to cover; Can cause the quick-fried film, shop film of powdered resin precoat filter, the frequency that puts into operation etc. to increase gradually like this, have a strong impact on the operation of powdered resin precoat filter and the steam quality of unit.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned deficiency of the prior art, provide a kind of simple in structure, reasonable in design, control condensed water precision processing system easy and that input cost is low, result of use is good.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of condensed water precision processing system comprises powdex and the shop film device, compressed air input unit, backwash water input unit and waste collection and the tapping equipment that join with powdex respectively; It is characterized in that: said shop film device comprises mixed with resin case and shop film case; The discharging opening of said mixed with resin case joins through the discharging opening of shop film injection pipeline with shop film case; On the film injection pipeline of shop shop film syringe pump and pipeline control valve five are housed; The discharging opening of shop film case joins through the shop film pipeline and the import of powdex, and the outlet of powdex joins through the charging aperture of circulation line with shop film case, is equipped with on the film pipeline of said shop and spreads membrane pump and pipeline control valve six; Said backwash water inlet channel feeds to mixed with resin case and shop film case through water inlet arm one and water inlet arm two respectively; Said mixed with resin case is respectively arranged with heating steam input channel one and heating steam input channel two with spreading in the film case; Heating steam input channel one all joins with heating steam generation equipment with heating steam input channel two, and heating steam input channel one is equipped with pipeline control valve nine and pipeline control valve ten respectively with heating steam input channel two; Said shop film case, shop film pipeline, shop membrane pump, powdex and circulation line are formed the shop film circulatory system, and said mixed with resin case, shop film injection pipeline and shop film syringe pump are formed notes film system from film to the said shop film circulatory system that annotate.
Above-mentioned a kind of condensed water precision processing system is characterized in that: said shop film injection delivery side of pump feeds to the mixed with resin case through circulating line, and pipeline control valve eight is housed on the circulating line.
Above-mentioned a kind of condensed water precision processing system; It is characterized in that: the flow of the heating steams of import is 20t/h ± 5t/h in said heating steam input channel one and the heating steam input channel two, and it is 0.8MPa ± 0.2MPa that the temperature of heating steam input channel one and the two interior heating steams of importing of heating steam input channel is higher than 200 ℃ and its pressure.
Above-mentioned a kind of condensed water precision processing system; It is characterized in that: the quantity of said powdex is two; The quantity of said shop film device, compressed air input unit, backwash water input unit and waste collection and tapping equipment is one, and two the shared said shop film devices of said powdex, a shared said compressed air input unit, a shared said backwash water input unit and a shared said waste collection and tapping equipments.
Simultaneously, the invention also discloses the first method of carrying out Chemical cleaning of filter filter that a kind of method step is simple, realization is convenient and cost is low, cleaning performance is good, it is characterized in that this method may further comprise the steps said condensed water precision processing system:
Step 1, alkali cleaning, its alkaline cleaning procedure is following:
101, quick-fried film backwash:, and powdex is carried out quick-fried film and backwash through said compressed air input unit and said backwash water input unit according to the quick-fried film and the back-flushing method of conventional powdex;
102, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex;
103, cleaning is made with alkali wash water: in the mixed with resin case, annotate demineralized water through said backwash water input unit; Simultaneously the alkali cleaning medicine is dropped in the mixed with resin case, and institute's adding alkali cleaning medicine and demineralized water are mixed the formation alkali wash water through set agitator in the mixed with resin case; In the said alkali wash water whipping process; Through heating steam input channel one in the mixed with resin case, feed heating steam with the temperature maintenance of said alkali wash water at 50 ℃ ± 5 ℃, in the film case of shop, feed heating steam through heating steam input channel two simultaneously and maintain 50 ℃ ± 5 ℃ will spread film case internal temperature; The conventional alkali cleaning medicine of said alkali cleaning medicine for powdex is cleaned;
104, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the alkali wash water described in the step 103 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 8 hours～10 hours; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject said alkali wash water through said notes film system;
105, vibration is cleaned, and its cleaning process is following:
1051, vibration is cleaned for the first time: open the air pressure adjustment valve of compressed air storage tank, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex,, accomplish the cleaning process of vibrating for the first time until the water level in the powdex being adjusted to sight glass one middle part;
1052, vibration is cleaned for the second time: open the air pressure adjustment valve of compressed air storage tank, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex, the water level in the powdex is adjusted to sight glass two middle parts, accomplish the cleaning process of vibrating for the second time;
1053, vibration is cleaned for the third time: open the air pressure adjustment valve of compressed air storage tank, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex, the water level in the powdex is adjusted to sight glass three middle parts, accomplish the cleaning process of vibrating for the third time;
Said sight glass one, sight glass two and sight glass three are for being laid in three sight glass on the powdex from top to bottom;
106, the however, residual base washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system;
Step 2, pickling, its acid cleaning process is following:
201, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex;
202, cleaning is made with pickle: the citric acid crystal is added in the mixed with resin case, and through set agitator in the mixed with resin case institute's adding citric acid crystal and demineralized water are mixed the formation citric acid solution; In the said citric acid solution whipping process; Through heating steam input channel one in the mixed with resin case, feed heating steam with the temperature maintenance of said citric acid solution at 75 ℃～85 ℃, in the film case of shop, feed heating steam through heating steam input channel two simultaneously and maintain 50 ℃ ± 5 ℃ will spread film case internal temperature;
203, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the citric acid solution described in the step 202 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 6 hours～8 hours; In the film cyclic process of shop; Continue in the film circulatory system of said shop, to inject said citric acid solution through said notes film system; And when injecting said citric acid solution, in said citric acid solution, add ammoniacal liquor continuously and maintain 3.5～4.0 with pH value with said citric acid solution;
204, vibration is cleaned: according to the described vibration cleaning method of step 1051 to step 1053, accomplish the vibration cleaning process three times;
205, the acid residues washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex (1) is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system.
The chemical cleaning method of above-mentioned a kind of condensed water precision processing system filter filter unit is characterized in that: described in the step 202 add the citric acid crystal in the mixed with resin case before, also need in the mixed with resin case, to add the citric acid corrosion inhibiter.
The first chemical cleaning method of above-mentioned a kind of condensed water precision processing system filter filter, it is characterized in that: said citric acid corrosion inhibiter is that mass concentration is 0.3% citric acid corrosion inhibiter.
The first chemical cleaning method of above-mentioned a kind of condensed water precision processing system filter filter, it is characterized in that: the alkali cleaning medicine described in the step 103 is NaOH powder and Na
2HPO
4Powder, wherein the mass percent of NaOH powder and said alkali wash water is 0.5%～0.8%, Na
2HPO
4The mass percent of powder and said alkali wash water is 0.2%～0.5%.
The first chemical cleaning method of above-mentioned a kind of condensed water precision processing system filter filter, it is characterized in that: the mass percent of crystal of citric acid described in the step 202 and said citric acid solution is 2%～4%.
The chemical cleaning method of above-mentioned a kind of condensed water precision processing system filter filter unit is characterized in that: all the air pressure of Compressed Gas in the compressed air storage tank is adjusted to 0.4MPa in step 1051, step 1052 and the step 1053.
The present invention compared with prior art has the following advantages:
1, existing condensed water precision processing system based on powdered resin precoat filter is adjusted seldom; Only need interim circulating line and the heating steam input channel one and heating steam input channel two installed; Install very simple and input cost lower, can effectively solve problems such as the cleaning inconvenience, length consuming time, the cleaning performance that exist when existing condensed water precision processing system cleans filter filter unit be relatively poor.
2, use easy and simple to handle and intelligent degree high, not only can clean by off-line, can also be implemented in linearize and clean.
3, input cost is low and economic cost is cheap, can effectively avoid because of frequently carrying out quick-fried film, shop a large amount of operating costs that film increased.
4, operation is simple and easy, and most cleaning processes are all moved through the internal processes of condensed water precision processing system automatically, and manpower mainly is to carry out the interpolation of medicine and the work such as judgement of clean endpoint.
5, cleaning performance is good, and the color of cleaning back filter unit is rendered as the initial white of filter unit, cleans back equipment and can continue good operation.The present invention at first utilizes alkali cleaning to remove the greasy dirt and loose deposit on filter unit surface; Second step then was to utilize pickling to remove pollutants such as corrosion product and silt; And emit, and through continuing good operation by assurance equipment after the Chemical cleaning with after the pollutant dissolving.Simultaneously, the present invention can reduce the frequency of quick-fried film, shop film, thereby reduces the operating cost of unit, is an important technique measure that realizes the fired power generating unit energy-saving and emission-reduction.
In sum, system architecture of the present invention is simple, reasonable in design, control easy and input cost is low, the cleaning method step is simple, cleaning performance good, and the color of cleaning back filter unit is rendered as the initial white of filter unit.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 by the present invention the fundamental diagram of employing condensed water precision processing system.
Method flow block diagram when Fig. 2 carries out Chemical cleaning for the present invention to the filter filter of condensed water precision processing system is first.
Description of reference numerals:
The 1-powdex; 2-condensate inlet channel; The female pipe of 3-condensate import;
4-condensate outlet conduit; The female pipe of 5-condensate outlet; The 6-bypass duct;
7-keeps the pump pipe laying; 8-keeps pump; 9-compressed air input channel;
10-pipeline control valve one; 11-backwash water inlet channel; 12-backwash water pump;
14-pipeline control valve two; 15-waste liquid recovery pond; 16-overflow pipe one;
17-overflow pipe two; The 18-collecting pit; 19-shop film case;
20-shop film injection pipeline; 21-shop film syringe pump; 22-pipeline control valve five;
23-shop film pipeline; 24-spreads membrane pump; 25-pipeline control valve six;
The 26-arm one of intaking; The 27-arm two of intaking; The 29-circulating line;
30-pipeline control valve eight; 31-heating steam input channel one;
32-heating steam input channel two; 33-pipeline control valve nine;
34-pipeline control valve ten; The 35-compressed air storage tank; 36-mixed with resin case;
The 37-circulation line.
The specific embodiment
A kind of condensed water precision processing system as shown in Figure 1 comprises powdex 1 and the shop film device, compressed air input unit, backwash water input unit and waste collection and the tapping equipment that join with powdex 1 respectively.Said shop film device comprises mixed with resin case 2 and shop film case 19; The discharging opening of said mixed with resin case 2 joins through the discharging opening of shop film injection pipeline 20 with shop film case 19; Shop film syringe pump 21 and pipeline control valve 5 22 are housed on the shop film injection pipeline 20; The discharging opening of shop film case 19 joins through the shop film pipeline 23 and the import of powdex 1; And the outlet of powdex 1 is joined through the charging aperture of circulation line 37 with shop film case 19, and shop membrane pump 24 and pipeline control valve 6 25 are housed on the said shop film pipeline 23.Said backwash water inlet channel 11 feeds to mixed with resin case 36 and shop film case 19 through water inlet arm 1 and water inlet arm 2 27 respectively; Said mixed with resin case 36 is respectively arranged with heating steam input channel 1 and heating steam input channel 2 32 with spreading in the film case 19; Heating steam input channel 1 all joins with heating steam generation equipment with heating steam input channel 2 32, and heating steam input channel 1 is equipped with pipeline control valve 9 33 and pipeline control valve 10 respectively with heating steam input channel 2 32.Said shop film case 19, shop film pipeline 23, shop membrane pump 24, powdex 1 and circulation line 37 are formed the shop film circulatory systems, the notes film system that said mixed with resin case 36, shop film injection pipeline 20 and shop film syringe pump 21 are formed to the said shop film circulatory system is spread film.Said mixed with resin case 36 is connected to the overflow pipe 1 and overflow pipe 2 17 that leads in collecting pit 18 respectively with spreading on the film case 19.
The import of said powdex 1 is joined through the female pipe 3 of condensate inlet channel 2 and condensate import; And the outlet of powdex 1 is joined through condensate outlet conduit 4 and the female pipe 5 of condensate outlet; Female pipe 3 of said condensate import and condensate export to be connected on bypass duct 6 and the bypass duct 6 between female pipe 5 bypass valve are housed, and are connected between the outlet of powdex 1 and the import to keep pump pipe laying 7 and keep being equipped with on the pump pipe laying 7 maintenance pump 8.In the present embodiment, the powdex 1 that is adopted and the structure and the operation principle of peripheral pipeline thereof are all identical with existing powdex.
Said compressed air input unit is equipped with pipeline control valve 1 for the compressed air storage tank 35 that the air inlet through compressed air input channel 9 and powdex 1 joins on the said compressed air input channel 9.Said backwash water input unit comprises backwash water inlet channel 11 and is installed in the backwash water pump 12 on the backwash water inlet channel 11, backwash water inlet channel 11 join with condensate outlet conduit 4 and backwash water inlet channel 11 on pipeline control valve 2 14 is housed.Said waste collection and tapping equipment comprise waste liquid recovery pond 15 and be connected in powdex 1 and waste liquid recovery pond 15 between the discharging of waste liquid pipeline, and on the said discharging of waste liquid pipeline blowdown control valve is housed.
In the present embodiment, the outlet of said shop film syringe pump 21 feeds to mixed with resin case 36 through circulating line 29, and on the circulating line 29 pipeline control valve 8 30 is housed.
Because used alkali cleaning medicine and the pickling medicine of the utility model all is solid medicines, only rely on the agitator in the mixed with resin case 36 to carry out even medicine, consuming time longer, can help the fixedly dissolving of medicine fast so install a circulating line 29 additional.
During actual the use; The flow of the heating steams of import is 20t/h ± 5t/h in said heating steam input channel 1 and the heating steam input channel 2 32, and it is 0.8MPa ± 0.2MPa that the temperature of heating steam input channel 1 and the 2 32 interior heating steams of importing of heating steam input channel is higher than 200 ℃ and its pressure.
During actual the use; Heating steam input channel 1 is to be laid in mixed with resin case 36 and the interim steam pipeline (trace) of spreading in the film case 19 respectively with heating steam input channel 2 32; The effect of heating steam input channel 1 and heating steam input channel 2 32 mainly is when before carrying out Chemical cleaning, setting up simulation loop, can improve the cleaning temperature of precision processing system in time, fast.Wherein, the steam parameter of heating steam input channel 1 and heating steam input channel 2 32 is controlled at: flow 20t/h,＞200 ℃, 0.8MPa.
In the actual use,, the not situation of full water of system then might occur, thereby on overflow pipe 2 17, install a pipeline control valve door (or restricting orifice) additional if overflow pipe 2 17 design heights of shop film case 19 are lower than the height of powdex 1 exhaust valve.
In the present embodiment; The quantity of said powdex 1 is two; The quantity of said shop film device, compressed air input unit, backwash water input unit and waste collection and tapping equipment is one, and two said powdex 1 shared said shop film devices, a shared said compressed air input unit, a shared said backwash water input unit and a shared said waste collection and tapping equipments.
And in the present embodiment, the structure of said compressed air input unit, backwash water input unit and waste collection and the tapping equipment that is adopted is all identical with existing condensed water precision processing system with operation principle.To sum up, what condensed water precision processing system that the present invention adopts used is medium voltage network, and condensate directly gets into powdex 1 after coagulating pump, then through the low entering oxygen-eliminating device that adds.Every unit adopts is that 2 * 100% condensate precision processing is with powdex 1; And 100% bypass duct 6 is set; Every unit is provided with a cover shop film device, two unit common compression air input units, backwash water input unit and waste collection and tapping equipments.
The filter filter unit of a kind of condensed water precision processing system as shown in Figure 2 carries out the method for Chemical cleaning, may further comprise the steps:
Step 1, alkali cleaning, its alkaline cleaning procedure is following:
101, quick-fried film backwash:, and powdex 1 is carried out quick-fried film and backwash through said compressed air input unit and said backwash water input unit according to the quick-fried film and the back-flushing method of conventional powdex.
Thereby elder generation's input is program control in the step 1 carries out quick-fried film backwash to powdex 1, removes the filtration foreign material such as resin on powdex 1 filter unit surface fully.
102, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex 1.
In the present embodiment, specifically be to utilize backwash water pump 12, powdex 1 and the pipeline of spreading in the film circulatory system are carried out full water, drop into the film circulation of program control foundation shop afterwards again.
103, cleaning is made with alkali wash water: in mixed with resin case 36, annotate demineralized water through said backwash water input unit; Simultaneously the alkali cleaning medicine is dropped in the mixed with resin case 36, and institute's adding alkali cleaning medicine and demineralized water are mixed the formation alkali wash water through set agitator in the mixed with resin case 36; In the said alkali wash water whipping process; Through heating steam input channel 1 in mixed with resin case 36, feed heating steam with the temperature maintenance of said alkali wash water at 50 ℃ ± 5 ℃, maintain 50 ℃ ± 5 ℃ through heating steam input channel 2 32 feeding heating steam in shop film case 19 will spread film case 19 internal temperatures simultaneously; The conventional alkali cleaning medicine of said alkali cleaning medicine for powdex 1 is cleaned.
In the actual mechanical process, in mixed with resin case 36, inject water earlier, add interim heating steam then, will spread the film circulatory system and be warming up to about 50 ℃, in mixed with resin case 36, add alkali cleaning medicine and synchronous turn on agitator again, stir.Because the main effect of alkali cleaning medicine is to remove iron in the condensate, greasy dirt, grain slag etc., thereby adopts NaOH and two kinds of medicaments of sodium hydrogen phosphate to carry out compound cleaning.To spread film case 19 internal temperatures, to maintain 50 ℃ ± 5 ℃ purpose be to guarantee in the film circulation of shop, with the temperature maintenance of said alkali wash water at 50 ℃ ± 5 ℃.
104, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the alkali wash water described in the step 103 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 8 hours～10 hours; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject said alkali wash water through said notes film system.
Actual when spreading the film wash cycles, begin to add alkali wash water and carry out wash cycles after starting shop film syringe pump 21 to the shop film circulatory system; At this moment; Owing to constantly the shop film circulatory system is added alkali wash water; Thereby excess liquid will flow out through the overflow pipe 2 17 of shop film case 19, all gets into the shop film circulatory system until alkali wash water and cleans, and controls the water level of the shop film circulatory system in this process well.
105, vibration is cleaned, and its cleaning process is following:
1051, vibration is cleaned for the first time: open the air pressure adjustment valve of compressed air storage tank 35, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank 35; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex 1,, accomplish the cleaning process of vibrating for the first time until the water level in the powdex 1 being adjusted to sight glass one middle part.
1052, vibration is cleaned for the second time: open the air pressure adjustment valve of compressed air storage tank 35, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank 35; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex 1, the water level in the powdex 1 is adjusted to sight glass two middle parts, accomplish the cleaning process of vibrating for the second time.
1053, vibration is cleaned for the third time: open the air pressure adjustment valve of compressed air storage tank 35, the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank 35; Simultaneously, open the air bleeding valve and the blowdown control valve of powdex 1, the water level in the powdex 1 is adjusted to sight glass three middle parts, accomplish the cleaning process of vibrating for the third time;
Said sight glass one, sight glass two and sight glass three are for being laid in three sight glass on the powdex 1 from top to bottom.
106, the however, residual base washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex 1 is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system.
Step 2, pickling, its acid cleaning process is following:
201, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex 1.
202, cleaning is made with pickle: the citric acid crystal is added in the mixed with resin case 36, and through set agitator in the mixed with resin case 36 institute's adding citric acid crystal and demineralized water are mixed the formation citric acid solution; In the said citric acid solution whipping process; Through heating steam input channel 1 in mixed with resin case 36, feed heating steam with the temperature maintenance of said citric acid solution at 75 ℃～85 ℃, maintain 50 ℃ ± 5 ℃ through heating steam input channel 2 32 feeding heating steam in shop film case 19 will spread film case 19 internal temperatures simultaneously.To spread film case 19 internal temperatures, to maintain 50 ℃ ± 5 ℃ purpose be to guarantee in the film circulation of shop, with the temperature maintenance of said citric acid solution at 50 ℃ ± 5 ℃.
The actual adding before the citric acid crystal, earlier the liquid level in the mixed with resin case 36 is reduced to low liquid level, add the citric acid crystal again.Generally speaking, the design temperature of powdex 1 is 85 ℃ ,≤75 ℃ of running temperature controls, and the cleaning temperature of citric acid generally is controlled at 90 ℃～98 ℃, thereby the citric acid cleaning temperature of powdex 1 is controlled at 75 ℃～85 ℃.
203, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the citric acid solution described in the step 202 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 6 hours～8 hours; In the film cyclic process of shop; Continue in the film circulatory system of said shop, to inject said citric acid solution through said notes film system; And when injecting said citric acid solution, in said citric acid solution, add ammoniacal liquor continuously and maintain 3.5～4.0 with pH value with said citric acid solution.
204, vibration is cleaned: according to the described vibration cleaning method of step 1051 to step 1053, accomplish the vibration cleaning process three times.
205, the acid residues washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex 1 is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system.
In the present embodiment, described in the step 202 the citric acid crystal is added in the mixed with resin case 36 before, also need adding citric acid corrosion inhibiter to mixed with resin case 36 in.And said citric acid corrosion inhibiter is that mass concentration is 0.3% citric acid corrosion inhibiter.
In the actual cleaning process; Because what the material of the filter of powdex 1 filter unit and bottom all adopted is 316 stainless steels; Line with rubber is all arranged all around; Thereby also can not add corrosion inhibiter, but safe in utilization for precision processing system still adds mass concentration and is 0.3% citric acid corrosion inhibiter and add the shop film circulatory systems through shop film syringe pump 21 in the present embodiment.
In the present embodiment, the alkali cleaning medicine described in the step 103 is NaOH powder and Na
2HPO
4Powder, wherein the mass percent of NaOH powder and said alkali wash water is 0.5%～0.8%, Na
2HPO
4The mass percent of powder and said alkali wash water is 0.2%～0.5%.
In the present embodiment, all the air pressure of Compressed Gas in the compressed air storage tank 35 is adjusted to 0.4MPa in step 1051, step 1052 and the step 1053.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (10)
1. condensed water precision processing system comprises powdex (1) and the shop film device, compressed air input unit, backwash water input unit and waste collection and the tapping equipment that join with powdex (1) respectively; It is characterized in that: said shop film device comprises mixed with resin case (36) and shop film case (19); The discharging opening of said mixed with resin case (36) joins through the discharging opening of shop film injection pipeline (20) with shop film case (19); Shop film syringe pump (21) and pipeline control valve five (22) are housed on the shop film injection pipeline (20); The discharging opening of shop film case (19) joins through the shop film pipeline (23) and the import of powdex (1); And the outlet of powdex (1) is joined through the charging aperture of circulation line (37) with shop film case (19), and shop membrane pump (24) and pipeline control valve six (25) are housed on the said shop film pipeline (23); Said backwash water inlet channel (11) feeds to mixed with resin case (36) and shop film case (19) through water inlet arm one (26) and water inlet arm two (27) respectively; Be respectively arranged with heating steam input channel one (31) and heating steam input channel two (32) in said mixed with resin case (36) and the shop film case (19); Heating steam input channel one (31) and heating steam input channel two (32) all join with heating steam generation equipment, and heating steam input channel one (31) and heating steam input channel two (32) are equipped with pipeline control valve nine (33) and pipeline control valve ten (34) respectively; Said shop film case (19), shop film pipeline (23), shop membrane pump (24), powdex (1) and circulation line (37) are formed the shop film circulatory system, and said mixed with resin case (36), shop film injection pipeline (20) and shop film syringe pump (21) are formed notes film system from film to the said shop film circulatory system that annotate.
2. according to the described a kind of condensed water precision processing system of claim 1, it is characterized in that: the outlet of said shop film syringe pump (21) feeds to mixed with resin case (36) through circulating line (29), and on the circulating line (29) pipeline control valve eight (30) is housed.
3. according to claim 1 or 2 described a kind of condensed water precision processing systems; It is characterized in that: the flow of the heating steams of importing is 20t/h ± 5t/h in said heating steam input channel one (31) and the heating steam input channel two (32), and it is 0.8MPa ± 0.2MPa that the temperature of heating steam input channel one (31) and two (32) the interior heating steams of importing of heating steam input channel is higher than 200 ℃ and its pressure.
4. according to claim 1 or 2 described a kind of condensed water precision processing systems; It is characterized in that: the quantity of said powdex (1) is two; The quantity of said shop film device, compressed air input unit, backwash water input unit and waste collection and tapping equipment is one, and the shared said shop film device of two said powdexs (1), a shared said compressed air input unit, a shared said backwash water input unit and a shared said waste collection and tapping equipment.
5. method that the filter filter unit of condensed water precision processing system is according to claim 1 carried out Chemical cleaning is characterized in that this method may further comprise the steps:
Step 1, alkali cleaning, its alkaline cleaning procedure is following:
101, quick-fried film backwash:, and powdex (1) is carried out quick-fried film and backwash through said compressed air input unit and said backwash water input unit according to the quick-fried film and the back-flushing method of conventional powdex;
102, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex (1);
103, cleaning is made with alkali wash water: in mixed with resin case (36), annotate demineralized water through said backwash water input unit; Simultaneously the alkali cleaning medicine is dropped in the mixed with resin case (36), and institute's adding alkali cleaning medicine and demineralized water are mixed the formation alkali wash water through set agitator in the mixed with resin case (36); In the said alkali wash water whipping process; Through heating steam input channel one (31) in mixed with resin case (36), feed heating steam with the temperature maintenance of said alkali wash water at 50 ℃ ± 5 ℃, maintain 50 ℃ ± 5 ℃ through heating steam input channel two (32) feeding heating steam in shop film case (19) will spread film case (19) internal temperature simultaneously; The conventional alkali cleaning medicine of said alkali cleaning medicine for powdex (1) is cleaned;
104, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the alkali wash water described in the step 103 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 8 hours～10 hours; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject said alkali wash water through said notes film system;
105, vibration is cleaned, and its cleaning process is following:
1051, vibration is cleaned for the first time: open the air pressure adjustment valve of compressed air storage tank (35), the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank (35); Simultaneously, open the air bleeding valve and the blowdown control valve of powdex (1),, accomplish the cleaning process of vibrating for the first time until the water level in the powdex (1) is adjusted to sight glass one middle part;
1052, vibration is cleaned for the second time: open the air pressure adjustment valve of compressed air storage tank (35), the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank (35); Simultaneously, open the air bleeding valve and the blowdown control valve of powdex (1), the water level in the powdex (1) is adjusted to sight glass two middle parts, accomplish the cleaning process of vibrating for the second time;
1053, vibration is cleaned for the third time: open the air pressure adjustment valve of compressed air storage tank (35), the air pressure of Compressed Gas is adjusted to 0.4MPa ± 0.05MPa in compressed air storage tank (35); Simultaneously, open the air bleeding valve and the blowdown control valve of powdex (1), the water level in the powdex (1) is adjusted to sight glass three middle parts, accomplish the cleaning process of vibrating for the third time;
Said sight glass one, sight glass two and sight glass three are for being laid in three sight glass on the powdex (1) from top to bottom;
106, the however, residual base washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex (1) is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system;
Step 2, pickling, its acid cleaning process is following:
201, the filter filling up water is subsequent use: through said backwash water input unit, subsequent use behind the filling up water in powdex (1);
202, cleaning is made with pickle: the citric acid crystal is added in the mixed with resin case (36), and through set agitator in the mixed with resin case (36) institute's adding citric acid crystal and demineralized water are mixed the formation citric acid solution; In the said citric acid solution whipping process; Through heating steam input channel two (32) in mixed with resin case (36), feed heating steam with the temperature maintenance of said citric acid solution at 75 ℃～85 ℃, maintain 50 ℃ ± 5 ℃ through heating steam input channel two (32) feeding heating steam in shop film case (19) will spread film case (19) internal temperature simultaneously;
203, shop film wash cycles: according to the shop film method of conventional powdex; Set up shop film circulation through the said shop film circulatory system; And through the citric acid solution described in the step 202 the said shop film circulatory system is carried out wash cycles in the film cyclic process of shop, the wash cycles time is 6 hours～8 hours; In the film cyclic process of shop; Continue in the film circulatory system of said shop, to inject said citric acid solution through said notes film system; And when injecting said citric acid solution, in said citric acid solution, add ammoniacal liquor continuously and maintain 3.5～4.0 with pH value with said citric acid solution;
204, vibration is cleaned: according to the described vibration cleaning method of step 1051 to step 1053, accomplish the vibration cleaning process three times;
205, the acid residues washing lotion is cleaned: put the clean said shop film circulatory system and the intrasystem all liq solution of said notes film earlier; Through said backwash water input unit powdex (1) is carried out backwash until going out clarification of water again; Set up shop film circulation through the said shop film circulatory system then, and in the film cyclic process of shop the demineralized water through said backwash water input unit input that the said shop film circulatory system is carried out wash cycles is clean until water outlet; In the film cyclic process of shop, continue in the film circulatory system of said shop, to inject demineralized water through said notes film system.
6. according to the described chemical cleaning method of claim 5, it is characterized in that: described in the step 202 the citric acid crystal is added in the mixed with resin case (36) before, also need adding citric acid corrosion inhibiter to mixed with resin case (36) in.
7. according to the described chemical cleaning method of claim 6, it is characterized in that: said citric acid corrosion inhibiter is that mass concentration is 0.3% citric acid corrosion inhibiter.
8. according to claim 5,6 or 7 described chemical cleaning methods, it is characterized in that: the alkali cleaning medicine described in the step 103 is NaOH powder and Na
2HPO
4Powder, wherein the mass percent of NaOH powder and said alkali wash water is 0.5%～0.8%, Na
2HPO
4The mass percent of powder and said alkali wash water is 0.2%～0.5%.
9. according to claim 5,6 or 7 described chemical cleaning methods, it is characterized in that: the mass percent of crystal of citric acid described in the step 202 and said citric acid solution is 2%～4%.
10. according to claim 5,6 or 7 described chemical cleaning methods, it is characterized in that: all the air pressure of the interior Compressed Gas of compressed air storage tank (35) is adjusted to 0.4MPa in step 1051, step 1052 and the step 1053.
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| CN108303050A (en) * | 2018-01-18 | 2018-07-20 | 中国电力科学研究院有限公司 | A kind of lossless extraction element of insulation resin formula current transformer core and method |
| CN110760389A (en) * | 2019-10-21 | 2020-02-07 | 河北冀研能源科学技术研究院有限公司 | Chemical cleaning agent for filter element of pre-filter of condensate polishing system and application |
| CN110980822A (en) * | 2019-11-20 | 2020-04-10 | 中国能源建设集团西北电力试验研究院有限公司 | Automatic cleaning system for powder resin covered filter and program control method |
| CN113105027A (en) * | 2021-05-10 | 2021-07-13 | 华北电力科学研究院有限责任公司 | Precision treatment device and method for ultra-supercritical direct air cooling unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113105027A (en) * | 2021-05-10 | 2021-07-13 | 华北电力科学研究院有限责任公司 | Precision treatment device and method for ultra-supercritical direct air cooling unit |
| CN113105027B (en) * | 2021-05-10 | 2022-11-04 | 华北电力科学研究院有限责任公司 | Precision processing device and method for ultra-supercritical direct air cooling unit |
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