CN110980822A - Automatic cleaning system for powder resin covered filter and program control method - Google Patents
Automatic cleaning system for powder resin covered filter and program control method Download PDFInfo
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- CN110980822A CN110980822A CN201911141229.6A CN201911141229A CN110980822A CN 110980822 A CN110980822 A CN 110980822A CN 201911141229 A CN201911141229 A CN 201911141229A CN 110980822 A CN110980822 A CN 110980822A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 132
- 239000011347 resin Substances 0.000 title claims abstract description 57
- 229920005989 resin Polymers 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 44
- 239000007788 liquid Substances 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000011001 backwashing Methods 0.000 claims description 60
- 239000003814 drug Substances 0.000 claims description 53
- 239000012528 membrane Substances 0.000 claims description 42
- 238000002360 preparation method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 31
- 239000012459 cleaning agent Substances 0.000 claims description 22
- 230000009191 jumping Effects 0.000 claims description 17
- 230000005587 bubbling Effects 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 229940079593 drug Drugs 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims description 3
- 229940126589 solid medicine Drugs 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
- B01D35/1435—Filter condition indicators with alarm means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
An inlet end of the film laying box is connected with a water replenishing door, an outlet end of the film laying box is respectively connected with a backflow end of the film laying box and an outlet door of an injection pump through the injection pump, an outlet door of the injection pump is connected with an outlet end of a film laying auxiliary box to form a whole, the whole is connected with a film laying liquid inlet door through the film laying pump, the film laying liquid inlet door is connected with an inlet end of a powder resin covering filter, an outlet end of the powder resin covering filter is connected with a film laying liquid return door, the film laying liquid return door is connected with a backflow end of the film laying auxiliary box, and cleaning liquid in the film laying box is pumped into a circulating system established by the film laying auxiliary box and the filter through the injection pump to be circularly cleaned by using the film laying pump and a maintaining pump as circulating power. The invention has the characteristics of high working efficiency, low cost, easy operation and the like.
Description
Technical Field
The invention relates to the technical field of condensate fine treatment, in particular to an automatic cleaning system of a powder resin covered filter and a program control method.
Background
The powder resin covered filter is widely applied to a condensate fine treatment system of an air cooling unit in northern areas of China. Generally, after a filter is failed, the filter is backwashed through water vapor, namely, membranes are paved and put into operation again after the membranes are cleaned, but if the filter element is seriously polluted and blocked, the backwashing effect of the water vapor is generally not ideal, and the membranes are not completely blasted, so that the membrane paving process of the filter is seriously influenced, and further, the treatment effect and the operation economy of the filter are influenced.
The filter element of the powder resin covered filter is polluted and blocked, the main solution at present is to replace a new filter element or carry out chemical cleaning, the cost for replacing the new filter element is expensive, and the operation of the chemical cleaning method is complex, and a professional cleaning company is generally needed.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an automatic cleaning system for a powdered resin covered filter and a program control method thereof, which have the characteristics of high working efficiency, low cost, easy operation, etc.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a powder resin covers filter self-cleaning system, includes shop membrane case 1, shop membrane case 1's entrance point and moisturizing door 8 are connected, shop membrane case 1 exit end is connected with the return end of shop membrane case 1 and syringe pump outlet door 10 respectively through syringe pump 2, and the combination becomes one way after syringe pump outlet door 10 is connected with shop membrane auxiliary tank 3 exit end, is connected with shop membrane liquid inlet door 11 through shop membrane pump 4, shop membrane liquid inlet door 11 and powder resin cover filter 5 entrance point connection, and powder resin cover filter 5 exit end is connected with shop membrane liquid return door 12, shop membrane liquid return door 12 and shop membrane auxiliary tank 3 return end are connected, shop membrane case 1 in washing liquid squeeze into the circulation system that shop membrane auxiliary tank 3 and filter 5 built through syringe pump 2, use shop membrane pump 4 and keep pump 6 as circulation power, carry out the circulation and wash.
The powder resin covered filter 5 includes a condensate water inlet/return pipe, and the condensate water enters the powder resin covered filter 5 through the water inlet valve 20 or the pressure rising valve 21 and returns through the water outlet valve 14.
The powder resin covered filter 5 comprises a compressed air inlet and outlet pipeline, and compressed air enters the powder resin covered filter 5 through an inlet valve 17 or an inlet bypass valve 18 and is discharged through an exhaust valve 15 or an exhaust bypass valve 16 to carry out bubbling cleaning.
Liquid level switches are arranged behind the exhaust valve 15 and the exhaust bypass valve 16.
The powder resin covered filter 5 comprises a backwashing water inlet and outlet pipeline, demineralized water is connected with a backwashing water inlet valve 13 through a backwashing water pump 7, enters the powder resin covered filter 5 through the backwashing water inlet valve 13 and is discharged through a backwashing water outlet valve 19.
The powder resin covered filter 5 includes a holding pump 6, an inlet of the holding pump 6 is connected to an outlet of the powder resin covered filter 5, and an outlet of the holding pump 6 is connected to an inlet of the powder resin covered filter 5.
The powder resin-coated filter 5 was equipped with an on-line pH meter and a conductivity meter.
The auxiliary film paving box 3 is provided with an electric heating constant temperature device 22 and a liquid level meter, and the electric heating constant temperature device has automatic temperature control and liquid level protection functions.
The film laying box 1 is provided with an electric stirrer 9 and a liquid level switch.
The invention also provides a program control method utilizing the process, wherein the program control method is based on a DCS control system, and the equipment runs according to the set CIP cleaning program by carrying out configuration and programming on an operation station and an engineer station, and monitors the running state in real time to realize the automatic cleaning function of the filter;
the DCS control system comprises a field control unit and an operation station and engineer station, wherein the field control unit has the functions of acquiring field data and controlling equipment to run, and the operation station and engineer station has the functions of displaying, alarming, operating, report printing, configuring, programming and the like.
The operation station monitoring picture can display the cleaning process flow, the opening and closing states of valves, the starting and stopping conditions of pumps, mixers and thermostatic devices, the operation parameters such as liquid level, temperature, pH, conductivity and the like, the change trend of the operation parameters along with time, and alarm information;
the cleaning process flow comprises a cleaning menu and an operation submenu, so that cleaning conditions can be conveniently selected, cleaning working conditions can be displayed, and the cleaning process can be controlled;
the CIP cleaning program comprises 9 steps of backwashing, water draining, air exhausting, circulating cleaning, bubbling cleaning, liquid draining, flushing, water filling and backwashing.
The CIP cleaning program does not limit the type of the cleaning agent, 1-3 cleaning agents can be selected according to the single cleaning purpose, the program can be called for many times to realize different cleaning purposes, and the solid liquid cleaning agent can be used;
the CIP cleaning program is not limited to a single filter process, and in a process of a plurality of filters, a filter to be cleaned may be selected from a menu.
The monitoring picture of the operation station and engineer station reflects the opening and closing state of a valve and the starting and stopping state of a pump through color change, red represents the opening state or the running state, and green represents the closing state and the stopping state; directly displaying parameters such as temperature, pH, conductivity and the like in the cleaning process through numerical values;
the cleaning process flow diagram is provided with a CIP cleaning menu, and the CIP cleaning menu comprises a current step sequence, a set time module and an operating time module and is respectively used for displaying the name of the current operating step sequence, the set operating time of the current step sequence and the operated time; the method comprises the following steps that a menu area is clicked to display a CIP cleaning operation submenu, the CIP cleaning operation submenu comprises a program setting area, a function selection area, a state display area and an operation control area from top to bottom, and the program setting area is used for setting the running time and the cycle number of each cleaning step; the function selection area is used for selecting the number and the type of cleaning medicines, 1-3 cleaning agents can be selected according to requirements, and solid or liquid is selected in the category check column, which means that the cleaning agents are solid or liquid, and if a plurality of devices to be cleaned need to be selected for cleaning; the state display area is used for displaying the time parameter of the current step sequence; the operation control area realizes the functions of starting and stopping a program and jumping and delaying a cleaning step sequence through four buttons of starting, stopping, stepping and stepping, and is convenient to control the cleaning process;
the CIP cleaning program comprises a Step1 backwashing process: running a backwashing Step sequence, setting the number of times, and ending and jumping to Step 2; step2 draining water: opening the exhaust valve 15 and the backwashing drainage valve 19, setting time, and jumping to the next step after finishing; step3 exhaust: opening the pressure rising door 21 and the exhaust bypass door 16, using the condensed water to fully exhaust the water of the filter, and triggering the liquid level switch to enter the next step; step4 circulation washing: opening a film paving liquid inlet door 11 and a film paving liquid return door 12, starting a film paving pump 4 and a holding pump 6, setting the cycle time, simultaneously putting a film paving auxiliary box thermostat 22, controlling the cleaning temperature within a set range, wherein Step4 comprises three medicine preparation and adding sub-steps, namely medicine preparation, medicine adding, medicine preparation and medicine adding, automatically operating the medicine preparation after the cycle is established, preselecting liquid or solid medicine, selecting solid to open a film paving box 1 water replenishing door 18 and a stirrer 9, triggering a liquid level switch if the liquid level is not low, starting an injection pump 2, establishing self-circulation of cleaning liquid, triggering a water replenishing switch if the liquid level is higher than a middle liquid level, closing the film paving box 1 door, selecting liquid not to open the film paving box 1 water replenishing door 18 and the stirrer 9, the other steps are the same, starting the medicine adding Step1 Step to be manually confirmed, clicking a confirmation button, the cleaning agent is prepared completely, the cleaning preparation is ready, the step is started, namely, an outlet door 10 of an injection pump is opened to inject the cleaning agent into a circulating system, when the liquid level of a membrane paving box is reduced to a low liquid level, a liquid level switch is triggered, a stirrer and the injection pump are stopped, the outlet door of the injection pump is closed, then medicine preparation, medicine adding, medicine preparation and medicine adding are sequentially carried out, the steps of 1-3, medicine preparation and adding can be selectively executed in a preselection frame, not all the steps are required to be executed, a constant temperature device is withdrawn after the circulation cleaning is completed, and the step sequence jumps to the next step; step5 bubbling cleaning: stopping the film laying pump 4 and the maintaining pump 6, closing the film laying liquid inlet door 11 and the film laying liquid return door 12, opening the exhaust valve 15 and the air inlet bypass door 18, introducing compressed air for bubbling cleaning, continuously blowing a large amount of small bubbles to clean the surface of the filter element, wherein the nominal diameter of the air inlet bypass door is DN25, the air source pressure is 0.35MPa, and ending the process of jumping to the next step; step6 liquid drainage: closing the air inlet bypass valve 18, opening the backwashing drainage valve 19, draining the cleaning liquid, setting the time, and jumping to the next step after finishing; step7 flushing: closing the backwashing drainage door 19 and the exhaust valve 15, repeating the Step3-Step6 once, injecting desalted water to wash the membrane laying box without adding a cleaning agent, and jumping to Step8 after finishing; step8 full water: closing the backwashing drainage door 19, opening the backwashing water inlet door 13, starting the backwashing water pump 7, filling the filter 5 with water, and triggering the liquid level switch to enter the next step after the water is full; step9 backwash: and (5) running a backwashing step sequence, setting the number of times, and stopping the program after the end.
The invention has the beneficial effects that:
the invention collects the data from the remote transmission instrument through the DCS control system, realizes the online monitoring of the cleaning process, controls the remote transmission pneumatic and electric actuating mechanisms to act according to the set sequence, and realizes the automatic control of the cleaning process, thereby greatly improving the working efficiency, reducing the labor intensity and saving the operating cost.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Fig. 2 is a DCS control schematic.
Fig. 3 is a schematic view of an operation menu.
Description of reference numerals:
1, a film laying box; 2, a syringe pump; 3, paving a film auxiliary box; 4, a membrane laying pump; 5 covering the filter with powder resin; 6 holding the pump; 7, backwashing a pump; 8, a water replenishing door; 9, an electric stirrer; 10 syringe pump outlet door; 11, paving a film liquid inlet door; 12, paving a film and returning to a liquid door; 13 backwashing the water inlet door; 14 water outlet door; 15 exhaust valve; 16 an exhaust bypass door; 17 an intake valve; 18 an intake bypass valve; 19 backwashing a drain door; 20 water inlet door; a 21 liter pressure gate; 22 an electrically heated thermostat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1: the utility model provides a powder resin covers filter self-cleaning system, includes shop membrane case 1, shop membrane case 1's entrance point and moisturizing door 8 are connected, shop membrane case 1 exit end is connected with the return end of shop membrane case 1 and syringe pump outlet door 10 respectively through syringe pump 2, and the combination becomes one way after syringe pump outlet door 10 is connected with shop membrane auxiliary tank 3 exit end, is connected with shop membrane liquid inlet door 11 through shop membrane pump 4, shop membrane liquid inlet door 11 and powder resin cover filter 5 entrance point connection, and powder resin cover filter 5 exit end is connected with shop membrane liquid return door 12, shop membrane liquid return door 12 and shop membrane auxiliary tank 3 return end are connected, shop membrane case 1 in washing liquid squeeze into the circulation system that shop membrane auxiliary tank 3 and filter 5 built through syringe pump 2, use shop membrane pump 4 and keep pump 6 as circulation power, carry out the circulation and wash.
The powder resin covered filter 5 includes a condensate water inlet/return pipe, and the condensate water enters the powder resin covered filter 5 through the water inlet valve 20 or the pressure rising valve 21 and returns through the water outlet valve 14.
The powder resin covered filter 5 comprises a compressed air inlet and outlet pipeline, and compressed air enters the powder resin covered filter 5 through an inlet valve 17 or an inlet bypass valve 18 and is discharged through an exhaust valve 15 or an exhaust bypass valve 16 to carry out bubbling cleaning.
Liquid level switches are arranged behind the exhaust valve 15 and the exhaust bypass valve 16.
The powder resin covered filter 5 comprises a backwashing water inlet and outlet pipeline, demineralized water is connected with a backwashing water inlet valve 13 through a backwashing water pump 7, enters the powder resin covered filter 5 through the backwashing water inlet valve 13 and is discharged through a backwashing water outlet valve 19.
The powder resin covered filter 5 includes a holding pump 6, an inlet of the holding pump 6 is connected to an outlet of the powder resin covered filter 5, and an outlet of the holding pump 6 is connected to an inlet of the powder resin covered filter 5.
The powder resin-coated filter 5 was equipped with an on-line pH meter and a conductivity meter.
The auxiliary film paving box 3 is provided with an electric heating constant temperature device 22 and a liquid level meter.
The electric heating constant temperature device 22 comprises an electric heater, a temperature measuring element and a liquid level switch, and the DCS control system automatically judges whether to put the heater in or cut off according to the difference between the set temperature and the measured temperature, so that the temperature of the cleaning system can be automatically controlled; and has the low liquid level power-off protection function.
The film laying box 1 is provided with an electric stirrer 9 and a liquid level switch.
The valve is a pneumatic switch valve, and the air source adopts clean, dry and oil-less compressed air for instruments, and the pressure range is 0.4-0.8 MPa; the pump and the stirrer are provided with a motor, and the power supply adopts 380/220V, AC, three-phase four-wire and 50 HZ.
As shown in fig. 2: the DCS control system comprises a field control unit and an operation station and engineer station, wherein the field control unit acquires data through field detection equipment, such as an online instrument and the like, and transmits the data to the operation station and engineer station to realize online monitoring of a cleaning process; meanwhile, receiving an instruction signal of an operation station and an engineer station, and executing an operation instruction through field electrical control equipment, such as low-voltage switch cabinets and other control equipment; the operation station and engineer station carries out configuration and programming through an industrial computer, and then sends an operation instruction to the field control unit, so that the equipment can operate according to a set program; the operation station and the engineer station can simultaneously realize output functions of displaying, alarming, report printing and the like.
The monitoring picture of the operation station and engineer station can display a cleaning process flow chart, and reflects the opening and closing state of a valve and the starting and stopping state of a pump through color change, for example, red represents the opening state or the running state, and green represents the closing state and the stopping state; directly displaying parameters such as temperature, pH, conductivity and the like in the cleaning process through numerical values, and if the parameters exceed a set value, giving out a photon alarm; the trend situation of parameter change in a period of time can be conveniently reflected through the trend graph.
The cleaning process flow chart is provided with a CIP cleaning menu, and the cleaning process flow chart is as shown in the left picture of FIG. 3: the CIP cleaning menu comprises a current step sequence module, a setting time module and an operating time module, and is used for displaying the name of the current operating step sequence module, the setting operating time module and the operating time module of the current step sequence module respectively; clicking on the menu area may display the CIP cleaning operation submenu, as shown in fig. 3, right panel: the CIP cleaning operation submenu comprises a program setting area, a function selection area, a state display area and an operation control area from top to bottom. The program setting area is used for setting the running time, the cycle number and the like of each cleaning step; the function selection area is used for selecting the number and the type of cleaning medicines, 1-3 cleaning agents can be selected according to requirements, and solid or liquid is selected in the category check column, which means that the cleaning agents are solid or liquid, and if a plurality of devices to be cleaned need to be selected for cleaning; the state display area is used for displaying the time parameter of the current step sequence; the operation control area realizes the functions of starting and stopping a program and jumping and delaying a cleaning step sequence through four buttons of starting, stopping, stepping and stepping, and is convenient to control the cleaning process.
The CIP cleaning program comprises 9 steps of backwashing, water drainage, air exhaust, circular cleaning, bubbling cleaning, liquid drainage, flushing, water filling and backwashing, wherein the circular cleaning comprises three steps of medicine preparation and adding. Step1 backwash: running a backwashing Step sequence, setting the number of times, and ending and jumping to Step 2; step2 draining water: opening the exhaust valve 15 and the backwashing drainage valve 19, setting time, and jumping to the next step after finishing; step3 exhaust: opening the pressure rising door 21 and the exhaust bypass door 16, using the condensed water to fully exhaust the water of the filter, and triggering the liquid level switch to enter the next step; step4 circulation washing: opening a film-paving liquid inlet door 11 and a film-paving liquid return door 12, starting a film-paving pump 4 and a holding pump 6, setting the cycle time, simultaneously putting into a film-paving auxiliary box thermostat 22, controlling the cleaning temperature within a set range, wherein Step4 comprises three medicine preparation and adding sub-steps, namely medicine preparation 1, medicine adding 1, medicine preparation 2, medicine adding 2, medicine preparation 3 and medicine adding 3, automatically operating the medicine preparation 1 after the cycle is established, preselecting liquid or solid medicine, selecting the solid to open a film-paving box water-replenishing door 18 and a stirrer 9, triggering a liquid level switch when the liquid level is not low, starting an injection pump 2, establishing self-circulation of cleaning liquid, triggering the liquid level switch when the liquid level is higher than the middle liquid level, closing the film-paving box water-replenishing door, selecting the liquid not to open the film-paving box water-replenishing door 18 and the stirrer 9, the other steps are the same, starting the Step of adding 1, needing manual confirmation, clicking a confirmation, the cleaning agent preparation is finished, the cleaning preparation is ready, the step is started, namely, an outlet door 10 of an injection pump is opened to inject the cleaning agent into a circulating system, when the liquid level of a membrane paving box is reduced to a low liquid level, a liquid level switch is triggered, a stirrer and the injection pump are stopped, the outlet door of the injection pump is closed, then medicine preparation 2, medicine adding 2, medicine preparation 3, medicine adding 3 and medicine preparation and adding 1-3 steps can be selected and executed in a preselection frame, not all the steps are required to be executed, a constant temperature device is withdrawn after the circulation cleaning is finished, and the step sequence is jumped to the next step; step5 bubbling cleaning: stopping the film laying pump 4 and the maintaining pump 6, closing the film laying liquid inlet door 11 and the film laying liquid return door 12, opening the exhaust valve 15 and the air inlet bypass door 18, introducing compressed air for bubbling cleaning, continuously blowing a large amount of small bubbles to clean the surface of the filter element, wherein the nominal diameter of the air inlet bypass door is DN25, the air source pressure is 0.35MPa, and ending the process of jumping to the next step; step6 liquid drainage: closing the air inlet bypass valve 18, opening the backwashing drainage valve 19, draining the cleaning liquid, setting the time, and jumping to the next step after finishing; step7 flushing: closing the backwashing drainage door 19 and the exhaust valve 15, repeating the Step3-Step6 once, injecting desalted water to wash the membrane laying box without adding a cleaning agent, and jumping to Step8 after finishing; step8 full water: closing the backwashing drainage door 19, opening the backwashing water inlet door 13, starting the backwashing water pump 7, filling the filter 5 with water, and triggering the liquid level switch to enter the next step after the water is full; step9 backwash: and (5) running a backwashing step sequence, setting the number of times, and stopping the program after the end.
Example 1 disodium hydrogen phosphate + sodium hydroxide Wash
Clicking a CIP cleaning menu area, setting backwashing times for 3 times, circulating cleaning time 18000s, bubbling cleaning time 2700s, cleaning temperature 60 ℃, selecting medicine preparation 1 and medicine adding 1 in a popup submenu, and selecting solid according to types. Clicking a starting button, starting a cleaning program, after 3 times of back washing is carried out at Step1, entering Step2 to drain residual water in a system, timing to finish entering Step3, injecting condensed water into the system until liquid level switch signals are sent after an exhaust valve and an exhaust bypass valve indicate that the water is fully injected into Step4, establishing a cleaning cycle, automatically putting a constant temperature device, starting heating and warming, opening a water replenishing door of a film paving box, putting a stirrer until the liquid level of the film paving box is not low, starting self-circulation of cleaning liquid of an injection pump until the liquid level signal in the film paving box is sent, closing the water replenishing door of the film paving box, adding sodium hydroxide with the volume of 0.5-0.8% of system water and disodium hydrogen phosphate with the volume of 0.2-0.5% of system water into the film paving box, clicking a medicine adding 1 button after the completion, opening an outlet door of the injection pump, injecting the cleaning liquid into a circulating system until the low liquid level signal of the film, stopping the stirrer and the injection pump, closing an outlet door of the injection pump, starting timing when the temperature of the system is higher than 60 ℃, keeping the temperature of the system at 60 +/-5 ℃ during the timing, continuously monitoring the pH value of the system, entering a Step5 membrane-paving pump 4 and a holding pump 6 after the timing is finished, closing a membrane-paving liquid inlet door 11 and a membrane-paving liquid return door 12, opening an exhaust valve 15 and an air inlet bypass door 18, introducing clean compressed air for bubbling cleaning, wherein the air source pressure is 0.35MPa, timing, entering a Step6 for discharging cleaning liquid, entering a Step7 cleaning device after the cleaning liquid is completely discharged, repeatedly executing a Step3-Step6 Step sequence once, injecting a cleaning agent into a desalted water flushing device without the cleaning agent, injecting desalted water into the system after the Step8 is finished, finishing the program after the exhaust valve and the exhaust bypass door are started until liquid level switch signals are sent out to enter the Step9 for carrying out 3 times of backwashing, observing the reading of an online pH meter which is less than 9.0 before the last backwashing is finished, otherwise the number of cycles should be increased.
Example 2 citric acid cleaning
Setting the backwashing times of Step1 to be 1, the backwashing times of Step9 to be 4, the circulating cleaning time to be 18000s, the bubbling cleaning time to be 2700s, the cleaning temperature to be 80 ℃, selecting the medicine preparation 1 and the medicine adding 1, selecting the type selection liquid, selecting the medicine preparation 2 and the medicine adding 2, selecting the type selection solid, selecting the medicine preparation 3 and the medicine adding 3, and selecting the type selection liquid. The method comprises the steps of clicking a start button, starting a cleaning program, entering Step2 to drain residual water in a system after Step1 carries out backwashing for 1 time, timing to finish entering Step3, injecting condensed water into the system until liquid level switch signals are sent after an exhaust valve and an exhaust bypass valve, indicating that the water is filled into Step4, establishing a cleaning cycle, automatically putting a constant temperature device, starting heating and warming, firstly adding a citric acid corrosion inhibitor with the volume of 0.3% of the water in the system into a film paving box, and clicking a medicine adding 1 button to inject the mixture into a circulating system after finishing the adding; then adding citric acid with the volume of 2-3% of the system water into the film laying box, and clicking a 2-button medicine adding device to inject the medicine into a circulating system; finally, 100L of ammonia water with the concentration of 25% -28% is added into the film spreading box, after the ammonia water is added, a 3-button medicine adding button is clicked to inject the ammonia water into a circulating system, and the pH value of the system is adjusted to be 3.5-4; beginning timing when the temperature of the system is higher than 80 ℃, maintaining the temperature of the system at 80 +/-5 ℃ during the timing, keeping the pH value of the system at 3.5-4, after the conductivity of the system is basically constant, entering a Step5 to stop a membrane paving pump 4 and a holding pump 6, closing a membrane paving liquid inlet door 11 and a membrane paving liquid return door 12, opening an exhaust valve 15 and an air inlet bypass door 18, introducing clean compressed air to carry out bubbling cleaning, keeping the air source pressure at 0.35MPa, timing to enter a Step6 to discharge cleaning liquid, draining the cleaning liquid, entering a Step7 cleaning device, repeatedly executing a Step3-Step6 Step sequence once, injecting no cleaning liquid into a desalted water flushing device, injecting desalted water into the system after the Step8 is finished, ending the program after the exhaust valve and the air outlet bypass door are started after liquid level switch signals are sent out, entering a Step9 to execute 4 times of backwashing, observing that the online pH meter reading is larger than 6.0 before the last backwashing is finished, and the online pH meter reading is smaller than 50 mu, otherwise the number of cycles should be increased.
Claims (10)
1. An automatic cleaning system of a powder resin covered filter is characterized by comprising a film laying box (1), wherein the inlet end of the film laying box (1) is connected with a water replenishing door (8), the outlet end of the film laying box (1) is respectively connected with the return end of the film laying box (1) and an outlet door (10) of an injection pump through the injection pump (2), the outlet door (10) of the injection pump is connected with the outlet end of an auxiliary film laying box (3) into one path and is connected with a liquid inlet door (11) of a film laying pump (4), the liquid inlet door (11) of the film laying is connected with the inlet end of the powder resin covered filter (5), the outlet end of the powder resin covered filter (5) is connected with a liquid return door (12) of the film laying pump, the liquid return door (12) of the film laying auxiliary box (3) is connected with the return end of the film laying box (3), and cleaning liquid in the film laying box (1) is pumped into a circulating system established by the auxiliary film laying box (3) and the filter (5) through the, the membrane laying pump (4) and the maintaining pump (6) are used as circulating power to carry out circulating cleaning.
2. The automatic powder resin covered filter cleaning system according to claim 1, wherein said powder resin covered filter (5) comprises a condensate water inlet/return pipe, and the condensate water enters the powder resin covered filter (5) through the water inlet valve (20) or the pressure-increasing valve (21) and returns through the water outlet valve (14).
3. The automatic cleaning system for powder resin covered filter according to claim 1, wherein said powder resin covered filter (5) comprises a compressed air intake and exhaust duct, and compressed air enters the powder resin covered filter (5) through an intake valve (17) or an intake bypass valve (18) and is exhausted through an exhaust valve (15) or an exhaust bypass valve (16) for bubbling cleaning.
4. The automatic cleaning system for powder resin covered filter as claimed in claim 3, wherein a liquid level switch is provided after said exhaust valve (15) and said exhaust bypass valve (16).
5. The automatic cleaning system for the powder resin covered filter as claimed in claim 1, wherein the powder resin covered filter (5) comprises a backwashing water inlet and outlet pipe, the demineralized water is connected with a backwashing water inlet valve (13) through a backwashing water pump (7), enters the powder resin covered filter (5) through the backwashing water inlet valve (13), and is discharged through a backwashing water outlet valve (19).
6. The automatic powder resin covered filter cleaning system according to claim 1, wherein said powder resin covered filter (5) comprises a holding pump (6), an inlet of the holding pump (6) is connected to an outlet of the powder resin covered filter (5), and an outlet of the holding pump (6) is connected to an inlet of the powder resin covered filter (5).
7. An automatic cleaning system for powder resin covered filter according to claim 1, characterized in that said powder resin covered filter (5) is equipped with an on-line pH meter and a conductance meter.
8. The automatic cleaning system for the powder resin covered filter as claimed in claim 1, wherein the auxiliary film-laying box (3) is provided with an electrothermal constant temperature device (22) and a liquid level meter, and the electrothermal constant temperature device has automatic temperature control and liquid level protection functions;
an electric stirrer (9) and a liquid level switch are arranged on the film spreading box (1).
9. A program control method of an automatic cleaning system for a powder resin covered filter includes the steps of; the program control method is based on a DCS control system, and the equipment runs according to a set CIP cleaning program by carrying out configuration and programming in an operation station and an engineer station, and monitors the running state in real time to realize the automatic cleaning function of the filter;
the DCS control system comprises a field control unit and an operation station and engineer station, wherein the field control unit has the functions of acquiring field data and controlling equipment to run, and the operation station and engineer station has the functions of displaying, alarming, operating, report printing, configuring, programming and the like;
the operation station monitoring picture can display the cleaning process flow, the opening and closing states of valves, the starting and stopping conditions of pumps, mixers and thermostatic devices, the operation parameters such as liquid level, temperature, pH, conductivity and the like, the change trend of the operation parameters along with time, and alarm information;
the cleaning process flow comprises a cleaning menu and an operation submenu, so that cleaning conditions can be conveniently selected, cleaning working conditions can be displayed, and the cleaning process can be controlled;
the CIP cleaning program comprises 9 steps of backwashing, draining, exhausting, circulating cleaning, bubbling cleaning, draining, flushing, filling water and backwashing;
the CIP cleaning program is not limited to a single filter process, and in a process of a plurality of filters, a filter to be cleaned may be selected from a menu.
10. The program control method of an automatic cleaning system for powder resin covered filters according to claim 9, wherein the CIP cleaning program does not limit the type of cleaning agent, 1-3 cleaning agents can be selected according to a single cleaning purpose, and a solid liquid cleaning agent can be used by calling the program for multiple times for different cleaning purposes;
the monitoring picture of the operation station and engineer station reflects the opening and closing state of a valve and the starting and stopping state of a pump through color change, red represents the opening state or the running state, and green represents the closing state and the stopping state; directly displaying parameters such as temperature, pH, conductivity and the like in the cleaning process through numerical values;
the cleaning process flow diagram is provided with a CIP cleaning menu, and the CIP cleaning menu comprises a current step sequence, a set time module and an operating time module and is respectively used for displaying the name of the current operating step sequence, the set operating time of the current step sequence and the operated time; the method comprises the following steps that a menu area is clicked to display a CIP cleaning operation submenu, the CIP cleaning operation submenu comprises a program setting area, a function selection area, a state display area and an operation control area from top to bottom, and the program setting area is used for setting the running time and the cycle number of each cleaning step; the function selection area is used for selecting the number and the type of cleaning medicines, 1-3 cleaning agents can be selected according to requirements, and solid or liquid is selected in the category check column, which means that the cleaning agents are solid or liquid, and if a plurality of devices to be cleaned need to be selected for cleaning; the state display area is used for displaying the time parameter of the current step sequence; the operation control area realizes the functions of starting and stopping a program and jumping and delaying a cleaning step sequence through four buttons of starting, stopping, stepping and stepping, and is convenient to control the cleaning process;
the CIP cleaning program comprises a Step1 backwashing process: running a backwashing Step sequence, setting the number of times, and ending and jumping to Step 2; step2 draining water: opening an exhaust valve (15) and a backwashing drainage valve (19), setting time, and jumping to the next step after finishing; step3 exhaust: opening a boosting door (21) and an exhaust bypass door (16), using condensed water to fully exhaust the filter, and triggering a liquid level switch to enter the next step; step4 circulation washing: opening a film paving liquid inlet door (11) and a film paving liquid return door (12), starting a film paving pump (4) and a holding pump (6), setting the cycle time, simultaneously putting a film paving auxiliary box thermostat (22), controlling the cleaning temperature within a set range, wherein Step4 comprises three medicine preparation and adding sub-steps, namely medicine preparation, medicine adding, medicine preparation and medicine adding, automatically operating the medicine preparation after the cycle is established, pre-selecting liquid or solid medicine, selecting the solid to open a film paving box (1) water replenishing door (18) and a stirrer (9), triggering a liquid level switch when the liquid level is not low, starting an injection pump (2), establishing self-circulation of cleaning liquid, triggering the liquid level switch when the liquid level is higher than the middle liquid level, closing a water replenishing door of the film paving box (1), selecting the liquid not to open the film paving box (1) water replenishing door (18) and the stirrer (9), and the other steps are the same, the step of adding the medicines is started to need manual confirmation, a confirmation button is clicked to indicate that the preparation of the cleaning agent is finished, the cleaning preparation is ready, the step is started, namely, an outlet door (10) of an injection pump is opened to inject the cleaning liquid into a circulating system, when the liquid level of a film paving box is reduced to a low liquid level, a liquid level switch is triggered, a stirrer and the injection pump are stopped, the outlet door of the injection pump is closed, then the steps of medicine preparation, medicine adding, medicine preparation, medicine adding and adding are sequentially operated, all steps can be selected to be executed in a pre-selection frame, not all steps are required to be executed, a constant temperature device is withdrawn after the circulation cleaning is finished, and the step; step5 bubbling cleaning: stopping the film laying pump (4) and the retaining pump (6), closing the film laying liquid inlet door (11) and the film laying liquid return door (12), opening the exhaust valve (15) and the air inlet bypass door (18), introducing compressed air for bubbling and cleaning, wherein the nominal diameter of the air inlet bypass door is DN25, a large number of small bubbles can be continuously blown in to clean the surface of the filter element, the air source pressure is 0.35MPa, and the next step is finished and skipped; step6 liquid drainage: closing the air inlet bypass valve (18), opening the backwashing drainage valve (19), draining the cleaning liquid, setting the time, and jumping to the next step after finishing; step7 flushing: closing the backwashing drainage door (19) and the exhaust valve (15), repeating the Step sequence of Step3-Step6 once, not adding a cleaning agent, injecting demineralized water to wash the membrane laying box, and ending and jumping to Step 8; step8 full water: closing the backwashing drainage door (19), opening the backwashing water inlet door (13), starting the backwashing water pump (7), filling the filter (5) with water, and triggering the liquid level switch to enter the next step after the water is full; step9 backwash: and (5) running a backwashing step sequence, setting the number of times, and stopping the program after the end.
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| CN201911141229.6A CN110980822A (en) | 2019-11-20 | 2019-11-20 | Automatic cleaning system for powder resin covered filter and program control method |
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| CN201911141229.6A CN110980822A (en) | 2019-11-20 | 2019-11-20 | Automatic cleaning system for powder resin covered filter and program control method |
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Application publication date: 20200410 |