CN112295611A - Mixed bed regeneration improvement process, system and application - Google Patents
Mixed bed regeneration improvement process, system and application Download PDFInfo
- Publication number
- CN112295611A CN112295611A CN202011232803.1A CN202011232803A CN112295611A CN 112295611 A CN112295611 A CN 112295611A CN 202011232803 A CN202011232803 A CN 202011232803A CN 112295611 A CN112295611 A CN 112295611A
- Authority
- CN
- China
- Prior art keywords
- regeneration
- valve
- water
- alkali
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/60—Cleaning or rinsing ion-exchange beds
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention belongs to the field of water production, and relates to a mixed bed regeneration improvement process, a system and application, wherein the mixed bed regeneration improvement process comprises the following steps: air scrubbing, backwashing pre-layering, primary drainage, alkali failure, backwashing layering, standing, secondary drainage, pre-injection, acid and alkali feeding, replacement, drainage after replacement, regeneration mixing, regeneration irrigation, regeneration forward washing and operation. The compressed air is used for scrubbing to enhance the backwashing effect, so that the resin is fully loosened. Facilitating subsequent backwashing. Meanwhile, in the alkali inlet failure step, the alkali inlet mode is adjusted, the positive discharge valve is opened, the middle discharge valve is opened, the alkali can be fully exchanged with the upper layer negative resin, a small amount of upper layer positive resin is failed, the alkali inlet time is shortened, the alkali consumption is reduced, and the regeneration effect is improved.
Description
Technical Field
The invention belongs to the field of water production, and particularly relates to a mixed bed regeneration improvement process.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
The desalting water section adopts: the pretreatment, reverse osmosis and mixed bed process are adopted to prepare high-purity desalted water for water supplement of a high-pressure boiler.
(1) Introduction of mixed bed parameters:
the model is as follows: YT-LMX-2500
Diameter: phi 2500mm
Designing output force: 200m3/h
Working pressure: not more than 0.6 Mpa
Working temperature: 5-45 DEG C
And (3) water preparation period: 168h
The running flow rate: 30-60m/h
Regeneration and filtration speed: 4-6m/h
Backwash flow rate: 8-12m/h
Regeneration of the medium: 2-4% NaOH solution and 3-5% HCL solution
Regeneration temperature: 5-35 deg.C
Filler height cationic 001X7 MB/anionic 201X7 MB: 500/1000
Equipment material: q235
Internal corrosion prevention: lining with natural rubber, and steam vulcanizing.
External corrosion prevention: antirust priming paint and finishing paint
The operation mode is as follows: manually and automatically
Quantity: 4 sets of
(2) Introduction of technical principle of mixed bed fine desalted water:
mixed beds, mixed bed ion exchangers, mixed beds for short. According to the principle of ion exchange, anion and cation exchange resins are uniformly mixed according to the volume ratio of 2:1, placed in the same exchange container, and then water is passed through the same exchange container to simultaneously implement anion and cation exchange reactions, so that the salt content in the water can be removed, and the high-purity water can be obtained. The mixed bed is connected in series behind the reverse osmosis or primary double-bed desalting system and is used for preparing pure water or high-purity water. The mixed bed will lose its effectiveness for a period of time, and in order to restore its exchange capacity, the two resins should be separated first, and then regenerated and flushed.
(3) A mixed bed regeneration step:
a. backwashing and pre-layering: closing the water inlet valve and the water production valve; closing the manual water production valve and a drain valve of the resin catcher; and opening a backwashing water inlet valve and a backwashing water discharge valve, starting an intermediate water pump to enable the resin to be in a sufficient flowing state, and backwashing the broken resin. And controlling a manual backwashing valve to control backwashing flow, wherein the backwashing end point is about 600s until the female resin and the male resin are basically layered on the basis that normal granular resin is not flushed out by water flow.
b. Draining water for the first time: and opening the exhaust valve and the positive exhaust valve to drain water to a position of 10cm above the resin layer for 60s, and closing all the valves.
c. Alkali feeding failure: opening an alkali inlet valve, a positive discharge valve and an exhaust valve of the mixed bed; and opening an alkali valve of an alkali metering box, regenerating an alkali water valve by using a mixed bed, starting a regeneration pump to ensure that the negative resin is completely ineffective, increasing the specific gravity difference of the negative resin and the positive resin, and completely layering the negative resin and the positive resin for 600 s.
d. Backwashing and layering: the method is characterized in that the cation resin and the anion resin are thoroughly separated, an alkali water valve is closed, a mixed bed alkali inlet valve and a middle drain valve are opened, a backwashing water inlet valve, a backwashing water drain valve and an intermediate pump (old drainage is a regeneration pump) are opened, backwashing layering is carried out at a proper flow rate until the backwashing end point is thoroughly layered at the junction of the cation resin and the anion resin, and a manual backwashing valve is slowly closed when backwashing is finished, so that resin particles are gradually settled, and the optimal layering effect is achieved. Time 1800 s.
e. Standing: and (4) closing all the valves (opening the exhaust valve or exhausting air from the reverse exhaust valve), observing the upper and lower sight glasses of the tank body, and waiting for the complete layering of the anion resin and the cation resin for 180 s.
f. Secondary drainage: and opening an exhaust valve and a forward washing discharge valve to discharge water to the position 100mm above the resin layer, wherein the time is determined by actual conditions. Then all valves are closed.
g. Pre-spray (freshly desalted water): closing a backwashing manual valve, opening a middle discharge valve, and feeding acid and alkali into the mixed bed; regenerating the valves of acid water and alkaline water by a mixed bed, starting a regeneration pump, and feeding water for about 180s
h. Acid and alkali feeding: the acid and alkali injection valves of an acid and alkali metering box are opened by adopting a synchronous regeneration method, and the regeneration time is 1800s
i. And (3) replacement: and closing the acid and alkali injection valves of the metering box, and performing replacement cleaning for about 1800 s.
j. Draining after replacement: and closing the valve and the water pump in the previous step, opening the reverse discharge valve and the forward discharge valve, and confirming that the water level in the container is discharged to the position of 200mm above the resin layer.
k. Regeneration and mixing: closing the positive exhaust valve, opening the exhaust valve and the intake valve; the inlet pressure was controlled at 0.15MPa and the mixing time was 1200s (confirming that the two resins were well mixed in the vessel). And stopping air, and closing the air inlet valve, the reverse exhaust valve and the exhaust valve. Immediately and rapidly draining water, and forcing the whole resin layer to rapidly fall.
l, regeneration irrigation: and opening a water inlet valve and an exhaust valve, and starting an intermediate water pump to fill with water.
m. regeneration forward washing: and opening a positive discharge valve, closing an exhaust valve, starting an intermediate water pump, positively flushing the mixed bed, and positively washing the mixed bed by using water at the flow rate of 120m/h until the conductivity of the effluent and the content of silicic acid are qualified.
n is operated: and opening a water inlet valve and an exhaust valve of the mixed bed, opening a lower discharge valve when the equipment is filled with water, closing the exhaust valve, controlling the forward washing flow rate and the working flow rate until the water outlet conductance reaches a set value, and switching to water production. And opening the water production valve of the mixed bed, closing the lower discharge valve, adjusting to the normal water production flow, and ending the water production period when the water production reaches a specified set value or the conductance exceeds the set value.
Problems are exposed in actual operation: 1. the backwashing effect of the mixed bed is poor, resin hardening and agglomeration easily occur, the backwashing resin is not loosened, if the backwashing flow is increased, the resin at the bottom layer is not moved, the resin at the upper layer is lost, and the regeneration effect of the regeneration liquid is influenced by layer deviation after backwashing. 2. The chemical system can continuously produce for 24 hours, and the system can be stopped and overhauled when running for a certain period, so that the equipment can be maintained, and the safety and reliability of the device can be ensured. During the system parking period, the air separation system is parked, the external compressed air is stopped, the compressed air for regenerating the desalted water mixed bed comes from the compressed air pipe network, once the medium is stopped, the desalted water mixed bed does not have regeneration conditions after being out of service, the desalted water production is influenced, and the system operation is restricted.
Disclosure of Invention
In order to overcome the above problems, the present invention provides an improved process for mixed bed regeneration. The backwashing effect of the mixed bed is improved, and the water consumption for backwashing the mixed bed is reduced. The mixed bed is normally regenerated after the supply of compressed air is stopped, the operation of desalted water is not restricted by the problem of mixed grease, and the stable water supply of the system is ensured.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect of the invention, there is provided a mixed bed regeneration improvement process comprising: air scrubbing, backwashing and pre-layering, primary drainage, alkali failure, backwashing and layering, standing, secondary drainage, pre-injection, acid and alkali inlet, replacement, drainage after replacement, regeneration mixing, regeneration irrigation, regeneration forward washing and operation.
The invention adds an air scrubbing step before backwashing pre-stratification in the first step of the mixed bed regeneration step. The compressed air scrubbing is utilized to enhance the backwashing effect, so that the resin is fully loosened. Facilitating subsequent backwashing. Meanwhile, in the step of alkali entering and losing effect, the alkali entering mode is adjusted, the positive discharge valve is opened, the middle discharge valve is opened, the alkali can be fully exchanged with the upper layer negative resin, a small amount of upper layer positive resin is lost, the alkali entering time is shortened, the alkali consumption is reduced, and the regeneration effect is improved.
In a second aspect of the invention, there is provided a mixed bed regeneration improvement system comprising: a mixing bed, an acid-base metering box, a water tank and a fan; the liquid inlet of the mixing bed is respectively connected with the acid and alkali metering tanks and the water tank, and the air inlet of the mixing bed is connected with the fan.
The existing desalted water station is provided with two Roots blowers for supplying air to the filter, and the invention adds a DN100 bypass at the outlet of the blower and is connected with the compressed air inlet main pipe of the demixing bed, thereby realizing double-path air supply and ensuring air supply. When the compressed air is stopped, the regenerated air source is switched to the Roots blower to ensure the normal regeneration of the mixed bed.
In a third aspect of the present invention, there is provided a high pressure boiler system comprising: the mixed bed regeneration improves the system.
The quality of the water supplied by the desalted water system directly affects the normal production of the high-pressure boiler and the steam turbine, so the regeneration improving system can effectively ensure the quality of the water supplied and the stable operation of the desalted water system.
The invention has the beneficial effects that:
(1) the backwashing effect of the mixed bed is improved, and the water consumption for backwashing the mixed bed is reduced. The mixed bed regeneration uses desalted water for backwashing once for 15 to 20 minutes, the water consumption is 12.5 to 17t, and each regeneration can backwash for 2 to 3 times or more, so that the backwashing can be thorough. The resin at the bottom is hardened, and the water consumption for backwashing is larger. After the adjustment measures are optimized, a compressed air fat mixing operation is added for 3-5 minutes before backwashing to loosen the resin, so that backwashing is easy, and backwashing can be thorough at most 1-2 times. The mixed bed can save 12.5t of backwash water for each regeneration, which is about 62.5 yuan. 4 mixed beds and the regeneration frequency is about 20 times per month, which can save 1250 yuan per month. The desalted water can be saved by 15000 yuan each year.
(2) The mixed bed is normally regenerated after the supply of compressed air is stopped, the operation of desalted water is not restricted by the problem of mixed grease, and the stable water supply of the system is ensured.
(3) The method is simple, convenient to operate, high in practicability and easy to popularize.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a diagram I of a mixed bed configuration in example 1 of the present invention;
FIG. 2 is a view II of a mixed bed configuration in example 1 of the present invention; wherein, 1, lifting lugs, 2 manholes, 3 water inlet devices, 4 manhole reinforcing rings, 5 alkali liquor inlet devices, 6 water distribution caps, 7 plugged manholes, 8 middle drainage devices, 9 connecting pipes and 10 water distribution plates.
FIG. 3 is a diagram of a mixed bed entity according to example 1 of the present invention;
fig. 4 is a real object diagram of the compressed air communicating pipe in embodiment 2 of the present invention;
FIG. 5 is a piping diagram of compressed air communication in example 2 of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
Interpretation of terms:
mixing a bed: mixed ion exchange regenerator
Regeneration: after the ion exchange resin is invalid, acid and alkali are used for regeneration, and the exchange performance is recovered.
The invention adds an air scrubbing step before backwashing pre-stratification in the first step of the mixed bed regeneration step. The compressed air scrubbing is utilized to enhance the backwashing effect, so that the resin is fully loosened. Facilitating subsequent backwashing. Meanwhile, in the step of alkali entering and losing effect, the alkali entering mode is adjusted, the positive discharge valve is opened, the middle discharge valve is opened, the alkali can be fully exchanged with the upper layer negative resin, a small amount of upper layer positive resin is lost, the alkali entering time is shortened, the alkali consumption is reduced, and the regeneration effect is improved.
The resin can be broken when the air scrubbing pressure is too large and the mixing intensity is increased, and the resin mixing effect is poor when the pressure is too small and the resin cannot be well loosened. Too high a liquid level index will increase the resistance and affect the resin loosening effect. The liquid level index is too low, and the resin is easy to break when being subjected to water shortage and dry wiping. Thus, in some embodiments, the specific steps of the air scrubbing are: draining water to a position 50-55 cm higher than the resin layer, closing all valves, and opening an air inlet valve, an exhaust valve and a reverse drain valve; controlling the air inlet pressure to be 0.05-0.1Mpa, and mixing for 300-320 s; stopping air, and closing the air inlet valve, the reverse exhaust valve and the exhaust valve; immediately and rapidly draining water to force the whole resin layer to fall rapidly so as to obtain the optimal scrubbing effect.
In some embodiments, the specific steps of the alkali-entering deactivation are: opening an alkali inlet valve, a middle exhaust valve and an exhaust valve of the mixed bed; and opening an alkali valve of an alkali metering box, regenerating an alkali water valve by using a mixed bed, and starting a regeneration pump to completely lose the male resin, increase the specific gravity difference of the female resin and the male resin, and completely stratify the female resin and the male resin for 300-320 s. In the alkali inlet failure step, the alkali inlet mode is adjusted, the positive exhaust valve is opened, the middle exhaust valve is opened, the alkali can be fully exchanged with the upper layer of the negative resin, a small amount of the upper layer of the positive resin is completely failed, the specific gravity difference of the negative resin and the positive resin is increased, the negative resin and the positive resin are completely layered, the alkali inlet time is shortened from 600s to 300s, the alkali consumption can be reduced, and the regeneration effect is improved.
In some embodiments, the mixed bed compressed air inlet pipe is connected with a Roots blower. Effectively solves the problem that the compressed air source is not supplied to the pipe network, and ensures that the source of the mixed bed regenerated air source is stable and sustainable.
In some embodiments, the Roots blower is also coupled to a filter. The desalted water station is provided with two Roots blowers for supplying air to the filter, so that an air source is guaranteed through the transformation of the original equipment, and the transformation cost is low.
In some embodiments, the Roots air volume is 22-25 m3And the air pressure P is 68.6-70 KPa, so that a better scrubbing effect is obtained.
In some embodiments, the backwash pre-stratification comprises the following specific steps: closing the water inlet valve and the water production valve; closing the manual water production valve and a drain valve of the resin catcher; opening a backwashing water inlet valve and a backwashing water discharge valve, starting an intermediate water pump to enable the resin to be in a sufficient flowing state, and backwashing the broken resin;
in some embodiments, the first draining comprises the following specific steps: and opening the exhaust valve and the positive exhaust valve to drain water to the position 10-12 cm above the resin layer for 60-65 s, and closing all the valves to obtain a better drainage effect.
In some embodiments, the time of backwashing layering is 1800-1850 s, so that the anion resin and the cation resin are thoroughly separated;
in some embodiments, the standing time is 180-200 s;
in some embodiments, the acid base: a synchronous regeneration method is adopted to obtain a better regeneration effect;
in some embodiments, the inlet pressure of the regenerative mixing is controlled to be 0.15-0.18 MPa for 1200-1250 s to ensure that the two resins are fully mixed in the container.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1:
a mixed bed regeneration step:
a. air scrubbing: draining water to the position 50cm high of the resin layer, closing all valves, and opening an air inlet valve, an air exhaust valve and a back exhaust valve; the inlet pressure is controlled at 0.08MPa, and the flow rate is 2.5m3/m2 .S, mixing time 300S (confirmation of resin loosening). And stopping air, and closing the air inlet valve, the reverse exhaust valve and the exhaust valve. Immediately and rapidly draining water to force the whole resin layer to rapidly fall.
b. Backwashing and pre-layering: closing the water inlet valve and the water production valve; closing the manual water production valve and a sewage discharge valve of the resin catcher; and opening a backwashing water inlet valve and a backwashing water discharge valve, starting an intermediate water pump to enable the resin to be in a sufficient flowing state, and backwashing the broken resin. And controlling a manual backwashing valve to control backwashing flow, wherein the backwashing end point is until the female resin and the male resin are basically layered on the basis that normal granular resin is not flushed out by water flow, the flow rate is 10m/h, and the time is about 600 s.
c. Draining water for the first time: and opening the exhaust valve and the positive exhaust valve to drain water to a position of 10cm above the resin layer for 60s, and closing all the valves.
d. Alkali feeding failure: opening an alkali inlet valve (NaOH, concentration is 4%, flow rate is 5m/h), a middle exhaust valve and an exhaust valve of the mixed bed; opening an alkali valve of an alkali metering box, regenerating an alkali water valve by a mixed bed, starting a regeneration pump to ensure that the cation resin is completely ineffective, increasing the specific gravity difference of the cation resin and the anion resin, completely layering the cation resin and the anion resin, and ensuring that the flow rate is 20m3H, time 300 s.
e. Backwashing and layering: the method aims to thoroughly separate the positive resin and the negative resin, close an alkali water valve, feed the alkali valve and a middle drain valve of a mixed bed, open a backwashing water inlet valve, a backwashing water drain valve and a middle pump (old drainage is a regeneration pump), carry out backwashing layering at the flow rate of 10m/h until the backwashing end point is thoroughly layered at the junction of the positive resin and the negative resin, and slowly close a manual backwashing valve when backwashing is finished to gradually settle resin particles so as to achieve the optimal layering effect. Time 900 s.
f. Standing: and (4) closing all the valves (opening the exhaust valve or exhausting air from the reverse exhaust valve), observing the upper and lower sight glasses of the tank body, and waiting for the complete layering of the anion resin and the cation resin for 180 s.
g. Secondary drainage: and opening an exhaust valve and a forward washing discharge valve to discharge water to the position 100mm above the resin layer, wherein the time is determined by actual conditions. Then all valves are closed.
h. Pre-spray (freshly desalted water): closing a backwashing manual valve, opening a middle discharge valve, and feeding acid and alkali into the mixed bed; the mixed bed regenerates an acid water valve and an alkaline water valve, and a regeneration pump is started to feed water for about 180s at the flow speed of 10 m/h.
i. Acid and alkali feeding: and opening acid and alkali injection valves of an acid and alkali metering box by adopting a synchronous regeneration method, wherein the regeneration time is 1800s, and the acid and alkali concentration is 3% (HCl/NaOH, the flow rate is 5 m/h).
j. And (3) replacement: and closing the acid and alkali injection valves of the metering box, and performing displacement cleaning at the flow rate of 10m/h for about 1800 s.
k. Draining after replacement: and closing the valve and the water pump in the previous step, opening the reverse discharge valve and the forward discharge valve, and confirming that the water level in the container is discharged to the position of 200mm above the resin layer.
Regenerative mixing: closing the positive exhaust valve, opening the exhaust valve and the intake valve; the inlet pressure is controlled at 0.10-0.15Mpa, and the flow rate is 3m3/m2.S, mixing time 1200S (confirming that the two resins in the vessel have been thoroughly mixed). And stopping air, and closing the air inlet valve, the reverse exhaust valve and the exhaust valve. Immediately and rapidly draining water, and forcing the whole resin layer to rapidly fall.
m. regeneration irrigation: and opening a water inlet valve and an exhaust valve, and starting an intermediate water pump to fill with water.
n. regeneration forward washing: opening the positive exhaust valve, closing the exhaust valve, starting the intermediate water pump, and carrying out operation on the mixed bedPositively flushed with water of 120m3The flow rate of the water is normal washed at a flow rate of/h, and the water is put into operation until the conductivity of the effluent is less than or equal to 0.2us/cm and the content of the silicic acid is qualified and less than or equal to 20 ug/l.
o. run: and opening a water inlet valve and an exhaust valve of the mixed bed, opening a lower discharge valve when the equipment is filled with water, closing the exhaust valve, controlling the forward washing flow rate to be 30m/h as the working flow rate, and transferring water into the mixed bed until the water outlet conductance reaches a set value of less than or equal to 0.2 us/cm. The water production valve of the mixed bed is opened, the lower discharge valve is closed, and the normal water production flow is adjusted to 200m3H, when the water yield reaches the set value of 33600m3Or conductance exceeding a set value>And (5) 0.2us/cm, namely finishing the water preparation period.
TABLE 1
Example 2
The desalination water station has two roots's fans for the filter air feed, increases a DN100 bypass and goes to mix the compressed air of bed and admit air the main pipe and be connected in fan export, realizes that the double-circuit air supply guarantees the air feed. When the compressed air is stopped, the regeneration gas source is switched to the Roots blower, so that the normal regeneration of the mixed bed is ensured.
Roots blower: model L52LD air volume 22m3The/min wind pressure P is 68.6 KPa. The air supply requirement is met.
Effectively solves the problem that the compressed air source is not supplied to the pipe network, and ensures that the source of the mixed bed regenerated air source is stable and sustainable.
Example 3:
the difference from the embodiment 1 is that the air inlet pressure of the air scrubbing is controlled at 0.08Mpa, and the flow rate is 2m3/m2.S。
Example 4:
the difference from example 1 is that the intake pressure of the air-fat mixture was controlled to 0.10 MPa.
Example 5:
the difference from example 1 is that in the e-backwash stratification, time 1200 s.
Example 6:
the difference from example 1 is that the acid-base concentration is 3%.
Comparative example 1
Example 1 in patent 201810040581. X.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or some of them can be substituted. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention. Although the present invention has been described with reference to the specific embodiments, it should be understood that the scope of the present invention is not limited thereto, and those skilled in the art will appreciate that various modifications and variations can be made without inventive changes by those skilled in the art based on the technical solutions of the present invention.
Claims (10)
1. A mixed bed regeneration improvement process, comprising: air scrubbing, backwashing pre-layering, primary drainage, alkali failure, backwashing layering, standing, secondary drainage, pre-injection, acid and alkali feeding, replacement, drainage after replacement, regeneration mixing, regeneration irrigation, regeneration forward washing and operation.
2. The mixed bed regeneration improvement process of claim 1, wherein the air scrubbing comprises the specific steps of: draining water to a position 50-55 cm higher than the resin layer, closing all valves, and opening an air inlet valve, an exhaust valve and a reverse drain valve; controlling the air inlet pressure to be 0.05-0.1Mpa, and mixing for 300-320 s; stopping air, and closing the air inlet valve, the reverse exhaust valve and the exhaust valve; immediately and rapidly draining water, and forcing the whole resin layer to rapidly fall.
3. The mixed-bed regeneration improvement process as claimed in claim 1, wherein said alkali-feeding failure comprises the following specific steps: opening an alkali inlet valve, a middle exhaust valve and an exhaust valve of the mixed bed; and opening an alkali valve of an alkali metering box, regenerating an alkali water valve by using a mixed bed, and starting a regeneration pump to completely lose the male resin, increase the specific gravity difference of the female resin and the male resin, and completely stratify the female resin and the male resin for 300-320 s.
4. The improved process for mixed bed regeneration as set forth in claim 1, wherein said mixed bed compressed air inlet pipe is connected to a roots blower.
5. The improved mixed bed regeneration process as set forth in claim 4, wherein said roots blower is further connected to a filter.
6. The improved mixed bed regeneration process as claimed in claim 4, wherein the Roots air volume is 22-25 m3And/min, wherein the wind pressure P is 68.6-70 KPa.
7. The improved mixed bed regeneration process of claim 1, wherein the backwashing pre-stratification comprises the following steps: closing the water inlet valve and the water production valve; closing the manual water production valve and a drain valve of the resin catcher; opening a backwashing water inlet valve and a backwashing water discharge valve, starting an intermediate water pump to enable the resin to be in a sufficient flowing state, and backwashing the broken resin;
the specific steps of the primary drainage are as follows: and opening the exhaust valve and the positive exhaust valve to drain water to the position 10-12 cm above the resin layer for 60-65 s, and closing all the valves.
8. The improved mixed bed regeneration process as claimed in claim 1, wherein the time of backwashing layering is 1800-1850 s;
or the standing time is 180-200 s;
or the acid-base: a synchronous regeneration method is adopted;
the pressure of the regenerative mixed air inlet is controlled to be 0.15-0.18 Mpa, and the mixing time is 1200-1250 s.
9. A mixed bed regeneration improvement system, comprising: a mixing bed, an acid-base metering box, a water tank and a fan; the liquid inlet of the mixing bed is respectively connected with the acid and alkali metering tanks and the water tank, and the air inlet of the mixing bed is connected with the fan.
10. A high pressure boiler system, comprising: the mixed bed regeneration enhancement system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232803.1A CN112295611B (en) | 2020-11-06 | 2020-11-06 | Mixed bed regeneration improvement process, system and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232803.1A CN112295611B (en) | 2020-11-06 | 2020-11-06 | Mixed bed regeneration improvement process, system and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112295611A true CN112295611A (en) | 2021-02-02 |
| CN112295611B CN112295611B (en) | 2022-12-16 |
Family
ID=74326520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232803.1A Active CN112295611B (en) | 2020-11-06 | 2020-11-06 | Mixed bed regeneration improvement process, system and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112295611B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058662A (en) * | 2021-03-22 | 2021-07-02 | 江西蓝星星火有机硅有限公司 | Resin regeneration method and mixed bed regeneration system used by same |
| CN113697900A (en) * | 2021-03-04 | 2021-11-26 | 国能蚌埠发电有限公司 | Novel full-automatic regeneration system of smart processing |
| CN114798005A (en) * | 2022-04-12 | 2022-07-29 | 中国大唐集团科学技术研究总院有限公司华东电力试验研究院 | Intelligent regeneration control method and system for ion exchange system based on image recognition |
| CN115364907A (en) * | 2022-02-17 | 2022-11-22 | 无锡市新永大环保设备有限公司 | Mixed bed cation-anion resin backwashing layering method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11226432A (en) * | 1998-02-19 | 1999-08-24 | Kurita Water Ind Ltd | Regenerating method of mixed bed desalting device |
| CN104226382A (en) * | 2013-06-14 | 2014-12-24 | 国家电网公司 | Power station boiler make-up water system mixed bed regeneration method |
| CN105618163A (en) * | 2016-01-22 | 2016-06-01 | 江阴市尚时环境工程有限公司 | Resin regeneration method of condensate polishing high tower separation method regeneration system |
| CN207153718U (en) * | 2017-07-05 | 2018-03-30 | 鄂尔多斯市君正能源化工有限公司 | A kind of strong acid, strong base ion exchange bed program control automatic regenerating unit |
| CN108178240A (en) * | 2018-01-16 | 2018-06-19 | 中国神华能源股份有限公司 | Desalination mixed bed regeneration method |
-
2020
- 2020-11-06 CN CN202011232803.1A patent/CN112295611B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11226432A (en) * | 1998-02-19 | 1999-08-24 | Kurita Water Ind Ltd | Regenerating method of mixed bed desalting device |
| CN104226382A (en) * | 2013-06-14 | 2014-12-24 | 国家电网公司 | Power station boiler make-up water system mixed bed regeneration method |
| CN105618163A (en) * | 2016-01-22 | 2016-06-01 | 江阴市尚时环境工程有限公司 | Resin regeneration method of condensate polishing high tower separation method regeneration system |
| CN207153718U (en) * | 2017-07-05 | 2018-03-30 | 鄂尔多斯市君正能源化工有限公司 | A kind of strong acid, strong base ion exchange bed program control automatic regenerating unit |
| CN108178240A (en) * | 2018-01-16 | 2018-06-19 | 中国神华能源股份有限公司 | Desalination mixed bed regeneration method |
Non-Patent Citations (1)
| Title |
|---|
| 王发现等: "《电站锅炉安全技术》", 31 August 2010, 黄河水利出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697900A (en) * | 2021-03-04 | 2021-11-26 | 国能蚌埠发电有限公司 | Novel full-automatic regeneration system of smart processing |
| CN113058662A (en) * | 2021-03-22 | 2021-07-02 | 江西蓝星星火有机硅有限公司 | Resin regeneration method and mixed bed regeneration system used by same |
| CN115364907A (en) * | 2022-02-17 | 2022-11-22 | 无锡市新永大环保设备有限公司 | Mixed bed cation-anion resin backwashing layering method |
| CN114798005A (en) * | 2022-04-12 | 2022-07-29 | 中国大唐集团科学技术研究总院有限公司华东电力试验研究院 | Intelligent regeneration control method and system for ion exchange system based on image recognition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112295611B (en) | 2022-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112295611B (en) | Mixed bed regeneration improvement process, system and application | |
| CN106587426B (en) | Steam boiler feedwater system debugging method | |
| CN112387315A (en) | Efficient mixed bed regeneration method | |
| CN105540742B (en) | A kind of mixed bed device that can be automatically drawn into acid solution, lye | |
| CN110776165A (en) | Method and system for water replenishing treatment of heat supply network | |
| CN202983322U (en) | Scrubbing device for desalted water production | |
| CN202030566U (en) | Mixed bed ion exchanger | |
| CN200962553Y (en) | Cold water efficient flexible adjusting device inside the generator | |
| CN110180604A (en) | Mixed bed regeneration method | |
| CN208980473U (en) | Boiler platoon water heats feed water by reverse osmosis device | |
| CN212644573U (en) | Indirect cooling water bypass automatic purification system of thermal power factory | |
| CN1962468A (en) | Double-tower type two-stage desalting device | |
| CN201002988Y (en) | Double-tower type two-stage demineralizing equipment | |
| CN211141667U (en) | Optimized softened resin filtering and purifying device | |
| CN101337708A (en) | Water purifier controlled by electrovalve | |
| CN206108984U (en) | Waste water categorised collection and reuse system are handled to boiler feedwater desalination | |
| CN209259848U (en) | A kind of large-sized boiler environment protection chemical water treatment facilities | |
| CN207204121U (en) | A kind of mixed ion exchanger | |
| CN214570914U (en) | Full-automatic water softening device | |
| CN216106140U (en) | Water softening device | |
| CN218131942U (en) | Softening and regenerating equipment meeting GMP (good manufacturing practice) requirements | |
| CN110436570A (en) | Refined brine chelating resin regenerative wastewater recyclable device and its use technique | |
| CN218910050U (en) | Water storage and softening device | |
| CN201258274Y (en) | Water purification equipment controlled by electromagnetic valve | |
| CN212408830U (en) | Reclaimed water withdrawing and returning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |