CN217092943U - Regeneration system of ceramic membrane filter - Google Patents

Abstract

The utility model provides a regeneration system of ceramic membrane filter, including the ceramic membrane filter, the flushing agent jar, the cleaning agent jar, flushing agent jar and ceramic membrane filter shell side intercommunication, the liquid outlet of cleaning agent jar is linked together with the feed end of membrane pipe, the liquid return mouth of cleaning agent jar respectively with the discharge end of membrane pipe and ceramic membrane filter shell side outlet pipe intercommunication, be equipped with on the pipeline between the discharge end of membrane pipe and the liquid return mouth of cleaning agent jar and/or on the pipeline between the liquid return mouth of ceramic membrane filter shell side outlet pipe and cleaning agent jar and wash the manometer, wash the pressure valve, wash the flowmeter. Regeneration system can carry out physics through the flushing agent after the heating and wash the ceramic membrane filter, carry out chemical cleaning to the ceramic membrane filter through the cleaner after the heating, need not to take out the membrane pipe from the ceramic membrane filter, improved regeneration efficiency, avoided the membrane pipe because of blockking up too early abandonment, reduced the damage risk, prolonged life.

Description

Regeneration system of ceramic membrane filter

Technical Field

The utility model belongs to filter regeneration field especially relates to a regeneration system of ceramic membrane filter.

Background

In the process of producing cyclohexanol by a cyclohexene hydration method, a hydration catalyst used in the reaction needs to be continuously regenerated, a large amount of acidic wastewater is generated in the regeneration process, and the solid hydration catalyst is dispersed in the acidic wastewater and cannot directly return to a reactor to continuously participate in the cyclohexene hydration reaction. Because the particle size of the hydration catalyst is extremely small, the acidic wastewater needs to be gradually filtered out by using a ceramic membrane filter, and is replaced by using pure water, and the filtering-out and replacement processes are carried out synchronously. The core structure of the ceramic membrane filter is a ceramic membrane tube, the acidic wastewater and the hydration catalyst pass through the inner side of the membrane tube, and a part of the acidic wastewater passes through the ceramic membrane tube to the outer side of the membrane tube, so that the acidic wastewater is filtered out. Ceramic membrane pipe causes the inside hole to block up easily because of various reasons in the use, makes acid waste water filter out the process and is hindered, and increase acid waste water filters out consuming time of process, reduces hydration catalyst regeneration process's efficiency to reduce hydration reaction's efficiency, influence the productivity of cyclohexanol device, still can increase acid waste water's flow in addition, the increase waste water treatment degree of difficulty.

Because ceramic membrane tubes are expensive, a series of measures are required to be taken for cleaning the ceramic membrane filter to remove the blockage among the pores in the ceramic membrane tube, so that the ceramic membrane filter can be reused, and the service life is prolonged. However, the ceramic membrane tube is fragile in structure, for example, the temperature difference between washing water and acidic wastewater is too large, the ceramic membrane tube is easy to break due to temperature shock, once the ceramic membrane tube breaks, the ceramic membrane tube is scrapped, and the loss of the hydration catalyst can be caused. In addition, even if the ceramic membrane tube is physically washed regularly, the problem that the permeability of the ceramic membrane tube is reduced after long-term use still occurs, and finally, the ceramic membrane tube is abandoned due to early blockage, so that the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a regeneration system of ceramic membrane filter to realize the regeneration of ceramic membrane filter, avoid the membrane tube fracture, improve the cleaning efficiency, prevent equipment damage increase of service life.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a regeneration system of a ceramic membrane filter comprises the ceramic membrane filter, wherein the ceramic membrane filter comprises a membrane tube arranged in the ceramic membrane filter, the membrane tube divides the ceramic membrane filter into a tube pass and a shell pass, wherein wastewater passes through the tube pass, and part of the wastewater passes through the membrane tube to enter the shell pass to form filtrate which is discharged out of the system;

the flushing agent tank is communicated with a flushing agent source, a flushing agent liquid supplementing valve is arranged on a pipeline between the flushing agent tank and the flushing agent source, when the liquid level of a flushing agent in the flushing agent tank is too low, the flushing agent in the flushing agent source is injected into the flushing agent tank through the flushing agent valve, a water outlet of the flushing agent tank is communicated with a shell pass water inlet pipe of the ceramic membrane filter through a pipeline, the flushing agent in the flushing agent tank enters the shell pass and then enters the tube pass through the membrane tube, and meanwhile, solids attached to the membrane tube are flushed back into the tube pass and discharged from a discharge end of the membrane tube, so that the permeability of the membrane tube is recovered, and after each batch of wastewater is filtered, the flushing agent is used for flushing the ceramic membrane filter;

a cleaning agent tank, wherein a liquid outlet of the cleaning agent tank is communicated with a feed end of the membrane tube through a pipeline, a liquid return port of the cleaning agent tank is respectively communicated with a discharge end of the membrane tube and a shell pass water outlet pipe of the ceramic membrane filter through pipelines, cleaning agent in the cleaning agent tank enters the membrane tube from the feed end of the membrane tube, part of the cleaning agent passes through the membrane tube and enters the shell pass of the ceramic membrane filter, the rest part of the cleaning agent flows out from the discharge end of the membrane tube and respectively flows back to the cleaning agent tank together with the cleaning agent flowing out from the shell pass, the cleaning agent reacts with solid or coke-like objects attached to the membrane tube and the like to be separated from the membrane tube, so that the permeability of the membrane tube is recovered, a cleaning pressure gauge and a cleaning pressure valve are arranged on the pipeline between the discharge end of the membrane tube and the liquid return port of the cleaning agent tank, the main purpose of arranging the cleaning pressure gauge and the cleaning pressure valve is to increase the pressure in the membrane tube and further increase the flow of the cleaning agent passing through the membrane tube, thereby improving the cleaning efficiency and shortening the cleaning time, wherein a cleaning flowmeter is arranged on a pipeline between the discharge end of the membrane tube and the liquid return port of the cleaning agent tank and/or a pipeline between the shell pass water outlet pipe of the ceramic membrane filter and the liquid return port of the cleaning agent tank, the distribution ratio of the cleaning agent flowing into the shell pass through the membrane tube and the cleaning agent remained in the membrane tube changes along with the change of the permeability of the membrane tube, the permeability change of the membrane tube can be known by monitoring the opening degree of the cleaning pressure valve or the flow change of the cleaning flowmeter according to the principle, the cleaning effect and the cleaning progress are judged, and whether the cleaning is finished or not is judged, particularly, when the cleaning pressure valve, the cleaning pressure valve and the cleaning flowmeter are all arranged on the pipeline between the discharge end of the membrane tube and the liquid return port of the cleaning agent tank, the cleaning flowmeter is used for monitoring the flow of the cleaning agent flowing back to the cleaning agent tank in the tube, the cleaning pressure gauge is used for displaying the pressure of the cleaning agent in the membrane tube, the cleaning pressure valve adjusts the pressure of the cleaning agent in the membrane tube to be maintained at a fixed value by changing the opening degree, part of the cleaning agent can be forced to pass through the membrane tube to enter a shell side by adjusting the pressure, and the cleaning agent and solid particles, coke-shaped objects, polymers and the like in pores in the membrane tube are subjected to chemical reaction in the passing process to be separated from the membrane tube, the flow of the cleaning agent flowing out of the membrane tube is reduced along with the improvement of the permeability of the membrane tube, the opening degree of the cleaning pressure valve is reduced for maintaining the fixed pressure, and when the opening degree of the cleaning pressure valve is less than one third of the initial opening degree or when the flow indicated by the cleaning flow meter is reduced to be less than one third of the initial flow, the cleaning is proved to be completed; and when the cleaning flowmeter is arranged on a pipeline between the shell pass water outlet pipe of the ceramic membrane filter and the liquid return port of the cleaning agent tank, along with the improvement of the permeability of the membrane pipe, the flow of the cleaning agent flowing back to the cleaning agent tank from the shell pass of the ceramic membrane filter is increased, and when the flow indicated by the cleaning flowmeter is increased to be three times or more than the initial flow, the cleaning is finished.

Furthermore, the flushing agent tank is provided with an air inlet pipe, an air pressure gauge and an exhaust valve, the air inlet pipe is communicated with a compressed air source, the air inlet pipe is provided with an air compensating valve, the air compensating valve and the exhaust valve are electrically connected with the air pressure gauge, the compressed air source injects the compressed air into the flushing agent tank to improve the air pressure in the flushing agent tank, the flushing agent is injected into the ceramic membrane filter by utilizing the air pressure, the air pressure in the flushing agent tank can be monitored by the air pressure gauge, the air pressure in the flushing agent tank can be always kept in a proper range through the exhaust valve, the outflow rate and pressure of the flushing agent are adjusted, the air in the compressed air source can be nitrogen, compressed air and the like, the tail end of the air inlet pipe in the flushing agent tank is located below the liquid level of the flushing agent, the flowing of the flushing agent can be accelerated in a bubbling mode, and the heating efficiency is improved.

The washing heating pipe is arranged in the washing agent tank and is communicated with a heat source through a pipeline, the heat source is injected into the washing heating pipe to heat the washing agent in the washing agent tank, so that the temperature of the washing agent is close to the temperature of the wastewater in the membrane pipe of the ceramic membrane filter, when the washing agent is injected into the ceramic membrane filter, the temperature of the membrane pipe cannot change suddenly, the membrane pipe is prevented from being broken, and the temperature of the heated washing agent is 60-90 ℃.

Further, still including wasing the heating pipe, wash in the heating pipe locates the cleaning agent jar, the delivery port and the return water mouth of flushing agent jar pass through the pipeline intercommunication with the both ends of wasing the heating pipe respectively, are equipped with the flushing agent pump on the pipeline between flushing agent jar and the washing heating pipe, and the flushing agent after will heating is poured into the washing heating pipe through the flushing agent pump and is used for heating the cleaning agent in the cleaning agent jar, and later the flushing agent gets back to the flushing agent jar and is heated up again, the flushing agent pump passes through the pipeline intercommunication between the delivery port of pipeline and flushing agent jar and the ceramic membrane filter shell side inlet tube, and the flushing agent pump can also be used for pouring into the ceramic membrane filter with the flushing agent in the flushing agent jar and wash promptly.

Further, the heat source is one of steam, hot water and hot oil, a temperature sensor is arranged in the flushing agent tank, a heat source control valve is arranged on a pipeline between the flushing heating pipe and the heat source, the heat source control valve is electrically connected with the temperature sensor, the temperature sensor is used for sensing the temperature of the flushing agent in the flushing agent tank, when the temperature is low, the opening degree of the heat source control valve is increased, more heat sources enter the flushing heating pipe to perform circulating heat supply, the temperature rise of the flushing agent is accelerated, and when the temperature reaches a target temperature, the opening degree of the heat source control valve is controlled to be reduced, so that the temperature of the flushing agent is prevented from being too high.

Further, the flushing agent is one of pure water, deoxygenated water and deoxygenated pure water, and the cleaning agent is one or more of a sodium hydroxide solution, a potassium carbonate solution, hydrogen peroxide, sulfuric acid or hydrochloric acid.

Furthermore, the number of the ceramic membrane filters can be 1, or a plurality of the ceramic membrane filters can be connected in series or in parallel, the number of the cleaning agent tanks can be 1, or a plurality of the cleaning agent tanks can be connected in parallel, and the cleaning agents in the cleaning agent tanks are the same or different.

A regeneration method of a ceramic membrane filter comprises at least one of physical washing and chemical cleaning,

the physical flushing comprises the following steps:

compressed gas is injected into the flushing agent tank, and the flushing agent tank is maintained in a stable pressurized state through a gas pressure gauge, a gas supply valve and a gas exhaust valve. And introducing a heat source into the flushing heating pipe, and heating the flushing agent in the flushing agent tank through the flushing heating pipe. When the ceramic membrane filter needs to be washed, the washing valve is opened, and the washing agent is directly pressed into the ceramic membrane filter.

The chemical cleaning comprises the following steps:

the flushing agent in the flushing agent tank is heated through the flushing heating pipe, the flushing agent after being heated in the flushing agent tank is injected into the cleaning heating pipe, the cleaning agent in the cleaning agent tank is heated through the cleaning heating pipe, the cleaning agent after being heated is injected into the ceramic membrane filter to clean the membrane tube, the pressure of the cleaning agent in the membrane tube is adjusted through the cleaning pressure valve, the pressure in the membrane tube is increased, the flow of the cleaning agent passing through the membrane tube is increased, the cleaning efficiency is improved, the cleaning time is shortened, the purpose of heating the cleaning agent by using the hot flushing agent is realized, the temperature instability of the cleaning agent is prevented, the overtemperature condition is realized, equipment in a protection system, a pipeline, an instrument, valves and the like are prevented from being damaged by the overheated cleaning agent with strong corrosivity.

Further, the method for judging whether the cleaning is finished comprises the following steps: when the opening degree of the cleaning pressure valve is smaller than one third of the initial opening degree of the cleaning pressure valve, judging that cleaning is finished; or when the flow of the cleaning flow meter between the shell pass water outlet pipe of the ceramic membrane filter and the liquid return port of the cleaning agent tank is more than three times of the initial flow, judging that the cleaning is finished; and when the flow of the cleaning flow meter between the discharge end of the membrane tube and the liquid return port of the cleaning agent tank is less than one third of the initial flow, judging that the cleaning is finished.

Further, the frequency of the physical rinse is greater than the frequency of the chemical rinse.

Compared with the prior art, the regeneration system of the ceramic membrane filter has the following advantages:

(1) the regeneration system of the utility model can physically wash the ceramic membrane filter through the flushing agent, and chemically wash the ceramic membrane filter through the cleaning agent, and the membrane tube can be washed without being taken out of the ceramic membrane filter, thereby reducing the operation difficulty, avoiding the waste gas of the membrane tube due to premature blockage, prolonging the service life and reducing the operation cost;

(2) the regeneration system of the utility model combines physical washing and chemical washing, and the frequency of the physical washing and the chemical washing is set, so that the permeability of the membrane tube is always maintained at a higher level, the filtering efficiency of the waste water is improved, the total amount of the waste water is reduced, and the environment protection is facilitated;

(3) the regeneration system of the utility model heats the flushing agent and the cleaning agent to make the temperature of the flushing agent and the cleaning agent injected into the ceramic membrane filter close to the temperature of the waste water, thereby avoiding the membrane tube from breaking caused by temperature shock, and simultaneously avoiding the overheated cleaning agent from corroding equipment, pipelines, instruments and valves in the system;

(4) regeneration system when carrying out chemical cleaning, through setting up washing manometer and washing pressure valve, increase the intraductal pressure of membrane and then increase the flow that the cleaner passed through the membrane pipe to improve the cleaning efficiency, shorten the scavenging period, and can accurately judge cleaning performance, wash the progress, wash and whether accomplish.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a regeneration system according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a regeneration system according to embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of a regeneration system according to embodiment 3 of the present invention.

Description of reference numerals:

1. a ceramic membrane filter; 2. a membrane tube; 3. a rinse tank; 4. a flushing agent pump; 5. a cleaning agent tank; 6. a detergent pump; 7. a liquid level meter; 8. a fluid replenishing valve; 9. a temperature sensor; 10. a heat source control valve; 11. a barometer; 12. an air supply valve; 13. an exhaust valve; 14. a flush valve; 15. cleaning the flowmeter; 16. cleaning the pressure gauge; 17. and cleaning the pressure valve.

Detailed Description

Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which this invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Example 1

As shown in fig. 1, the regeneration system of the ceramic membrane filter 1 in the present embodiment includes a ceramic membrane filter 1, a flushing agent tank 3, and a cleaning agent tank 5, the ceramic membrane filter 1 includes a membrane tube 2 embedded in the ceramic membrane filter 1, the membrane tube 2 divides the ceramic membrane filter 1 into a tube pass and a shell pass, the flushing agent tank 3 is communicated with a flushing agent source, the flushing agent in the present embodiment is deoxygenated pure water, a liquid level meter 7 is arranged in the flushing agent tank 3 for sensing the liquid level of the flushing agent in the flushing agent tank 3, a liquid replenishing valve 8 is arranged on a pipeline between the flushing agent tank 3 and the flushing agent source, when the liquid level of the flushing agent in the flushing agent tank 3 is too low, the flushing agent in the flushing agent source is injected into the flushing agent tank 3 through the liquid replenishing valve 8, a water outlet of the flushing agent tank 3 is communicated with a shell pass water inlet pipe of the ceramic membrane filter 1 through a pipeline, a flushing valve 14 is arranged on a pipeline between the water outlet of the flushing agent tank 3 and the shell pass of the ceramic membrane filter 1, the flushing agent in the flushing agent tank 3 can be injected into the ceramic membrane filter 1 for flushing by opening the flushing valve 14, the flushing agent tank 3 is provided with an air inlet pipe, a barometer 11 and an exhaust valve 13, the air inlet pipe is communicated with a compressed air source, the air inlet pipe is provided with an air supplement valve 12, the air supplement valve 12 and the exhaust valve 13 are both electrically connected with the barometer 11, the compressed air source injects the compressed air into the flushing agent tank 3 to increase the air pressure in the flushing agent tank 3, the flushing agent is injected into the ceramic membrane filter 1 by using the air pressure, the barometer 11 can monitor the air pressure in the flushing agent tank 3, the air pressure in the flushing agent tank 3 can be kept in a proper range all the time through the exhaust valve 13, so that the outflow rate and the outflow pressure of the flushing agent are adjusted, the air pressure in the flushing agent tank 3 in the embodiment is set to be 0.5MPa, the air in the compressed air source in the embodiment is nitrogen, and the tail end of the air inlet pipe in the flushing agent tank 3 is positioned below the liquid level of the flushing agent, the flow of the flushing agent can be accelerated by bubbling, the heating efficiency is improved, the flushing device also comprises a flushing heating pipe, the flushing heating pipe is arranged in a flushing agent tank 3, the flushing heating pipe is communicated with a heat source through a pipeline, the heat source is injected into the flushing heating pipe, the flushing agent in the flushing agent tank 3 can be heated, the temperature of the flushing agent is close to the temperature of waste water, when the flushing agent is injected into a ceramic membrane filter 1, the temperature of a membrane pipe 2 cannot suddenly change, the membrane pipe 2 is prevented from cracking, the temperature of the heated flushing agent is 80 ℃, the heat source in the embodiment is steam, a temperature sensor 9 is arranged in the flushing agent tank 3, a heat source control valve 10 is arranged on the pipeline between the flushing heating pipe and the heat source, the heat source control valve 10 is electrically connected with a temperature sensor 9, the temperature sensor 9 is used for sensing the temperature of the flushing agent in the flushing agent tank 3, when the temperature is lower, the opening degree of the heat source control valve 10 is increased, more heat sources enter the flushing heating pipe for circulating heat supply, the temperature rise of the flushing agent is accelerated, and when the temperature reaches the target temperature, the opening degree of the heat source control valve 10 is controlled to be reduced, so that the over-high temperature of the flushing agent is avoided.

When the regeneration system in this embodiment is physically washed, the flushing agent in the flushing agent tank 3 is heated through the flushing heating pipe, compressed gas is injected into the flushing agent tank 3 by the compressed gas source, the flushing agent after being heated is pushed by air pressure to be injected into the ceramic membrane filter 1, the flushing agent in the flushing agent tank 3 passes through the membrane tube 2 to enter the tube side after entering the shell side, organic matter and catalyst particles attached to the membrane tube 2 are flushed back into the tube side and discharged from the discharge end of the membrane tube 2, so that the permeability of the membrane tube 2 is recovered, and after each batch of wastewater is filtered, the flushing agent is used for flushing the ceramic membrane filter 1.

The cleaning agent in the embodiment is sodium hydroxide solution, the liquid outlet of the cleaning agent tank 5 is communicated with the feed end of the membrane tube 2 through a pipeline, a cleaning agent pump 6 is arranged on the pipeline between the liquid outlet of the cleaning agent tank 5 and the feed end of the membrane tube 2, the cleaning agent pump 6 is used for pressurizing and injecting the cleaning agent in the cleaning agent tank 5 into the ceramic membrane filter 1, the liquid return port of the cleaning agent tank 5 is respectively communicated with the discharge end of the membrane tube 2 and the shell side water outlet pipe of the ceramic membrane filter 1 through a pipeline, a cleaning flow meter 15, a cleaning pressure gauge 16 and a cleaning pressure valve 17 are sequentially arranged on the pipeline between the discharge end of the membrane tube 2 and the liquid return port of the cleaning agent tank 5 along the cleaning agent return direction, the cleaning flow meter 15 is used for monitoring the flow of the cleaning agent flowing back to the cleaning agent tank 5 in the tube, the cleaning pressure gauge 16 is used for monitoring the pressure of the cleaning agent in the membrane tube 2, the cleaning pressure valve 17 adjusts the pressure of the cleaning agent in the membrane tube 2 by changing the opening degree to maintain a fixed value, part of cleaning agent can be forced to pass through the membrane tube 2 to enter a shell side by adjusting the pressure, and the cleaning agent and solid particles, coke-like objects, polymers and the like in the pores in the membrane tube 2 are subjected to chemical reaction in the passing process to be separated from the membrane tube 2, the flow of the cleaning agent flowing out of the membrane tube 2 is reduced along with the improvement of the permeability of the membrane tube 2, in order to maintain a fixed pressure and reduce the opening degree of the cleaning pressure valve 17, in the embodiment, the pressure of the cleaning agent in the membrane pipe 2 is 0.2MPa, the cleaning agent tank 5 is internally provided with a cleaning heating pipe, the water outlet and the water return port of the flushing agent tank 3 are respectively communicated with two ends of the cleaning heating pipe through pipelines, the pipeline between the flushing agent tank 3 and the cleaning heating pipe is provided with a flushing agent pump 4, the heated flushing agent is injected into the cleaning heating pipe through the flushing agent pump 4 to heat the cleaning agent in the cleaning agent tank 5, and then the flushing agent returns to the flushing agent tank 3 to be heated again to raise the temperature.

Heating the flushing agent in the flushing agent tank 3 through a flushing heating pipe, injecting the heated flushing agent in the flushing agent tank 3 into a cleaning heating pipe, heating the cleaning agent in the cleaning agent tank 5 through the cleaning heating pipe, injecting the heated cleaning agent into the ceramic membrane filter 1, enabling the cleaning agent in the cleaning agent tank 5 to enter the membrane tube 2 from the feeding end of the membrane tube 2, enabling part of the cleaning agent to pass through the membrane tube 2 to enter the shell side of the ceramic membrane filter 1, enabling the rest part of the cleaning agent to flow out from the discharging end of the membrane tube 2, respectively flowing back to the cleaning agent tank 5 together with the cleaning agent flowing out from the shell side, enabling the cleaning agent to react with a solid or a coke-like object which is attached to the membrane tube 2 and cannot be washed down through the flushing agent, enabling the cleaning agent to be separated from the membrane tube 2, and recovering the permeability of the membrane tube 2, when the flow indicated by the cleaning flow meter 15 is reduced to one third of the initial flow, or when the opening degree of the cleaning pressure valve 17 is one third of the initial opening degree, after the completion of the cleaning, the ceramic membrane filter 1 is washed once by using a washing agent, and the regeneration of the ceramic membrane filter 1 is completed.

Example 2

As shown in fig. 2, the difference from embodiment 1 is that two ceramic membrane filters 1 in embodiment 2 are arranged in parallel, each group includes two ceramic membrane filters 1 connected in series, a rinsing agent tank 3 and a cleaning agent tank 5 are respectively connected to each group of ceramic membrane filters 1, and any group can be independently rinsed or cleaned, in embodiment 2, the rinsing agent is pure water, the cleaning agent is hydrogen peroxide, the heat source is 120 ℃ hot water, the temperature of the heated rinsing agent is 70 ℃, the temperature of the heated cleaning agent is 50 ℃, the water outlet of the rinsing agent pump 4 is connected to the feed end of the membrane tube 2 and the cleaning heating tube through a pipeline, and can be used for rinsing the ceramic membrane filters 1 and heating the cleaning agent in the cleaning agent tank 5, the cleaning flow meter 15 in embodiment 2 is arranged on the pipeline between the shell pass water outlet pipe of the ceramic membrane filters 1 and the liquid return port of the cleaning agent tank, along with the improvement of the permeability of the membrane tube 2, the flow of the cleaning agent flowing back to the cleaning agent tank 5 from the shell side of the ceramic membrane filter 1 is increased, when the flow indicated by the cleaning flow meter 15 is increased to be three times of the initial flow or when the opening degree of the cleaning pressure valve 17 is one third of the initial opening degree, the cleaning is proved to be finished, and then the ceramic membrane filter 1 is washed once by the flushing agent, so that the regeneration of the ceramic membrane filter 1 is finished.

Example 3

As shown in fig. 3, the difference from embodiment 1 is that the ceramic membrane filter 1 in embodiment 3 includes two ceramic membrane filters connected in series in sequence, the cleaning agent tank 5 includes two cleaning agent tanks connected in parallel, two corresponding cleaning agent pumps 6 are also provided, the cleaning agents in the two cleaning agent tanks 5 are different, one of the cleaning agents is a sodium hydroxide solution, the other cleaning agent is sulfuric acid, the ceramic membrane filter 1 is firstly cleaned by the sodium hydroxide solution, then the ceramic membrane filter 1 is cleaned by a flushing agent, then the ceramic membrane filter 1 is cleaned by the sulfuric acid, and finally the ceramic membrane filter 1 is cleaned by the flushing agent, in this embodiment, the cleaning flow meter 15 is not installed, only the cleaning pressure gauge 16 and the cleaning pressure valve 17 are installed, as the permeability of the membrane tube 2 is increased, the flow rate of the cleaning agent flowing back to the cleaning agent tank 5 from the shell pass of the ceramic membrane filter 1 is increased, the opening degree of the purge pressure valve 17 is gradually decreased, and when the opening degree of the purge pressure valve 17 is decreased to one-third of the initial opening degree, it is confirmed that the purging is completed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A regeneration system for a ceramic membrane filter, comprising: the ceramic membrane filter comprises a membrane tube;

the flushing agent tank is filled with a flushing agent, and a water outlet of the flushing agent tank is communicated with a shell pass water inlet pipe of the ceramic membrane filter through a pipeline;

the cleaning agent jar, be equipped with the cleaning agent in the cleaning agent jar, the liquid outlet of cleaning agent jar passes through the feed end intercommunication of pipeline and membrane pipe, and the liquid return mouth of cleaning agent jar passes through the pipeline and communicates with the discharge end of membrane pipe and ceramic membrane filter shell side outlet pipe respectively, be equipped with on the pipeline between the discharge end of membrane pipe and the liquid return mouth of cleaning agent jar and wash manometer and washing pressure valve.

2. The regeneration system of claim 1, wherein: and a cleaning flow meter is arranged on a pipeline between the discharge end of the membrane tube and the liquid return port of the cleaning agent tank and/or a pipeline between the shell pass water outlet pipe of the ceramic membrane filter and the liquid return port of the cleaning agent tank.

3. The regeneration system of claim 1, wherein: the flushing agent tank is provided with an air inlet pipe, a barometer and an exhaust valve, the air inlet pipe is communicated with a compressed air source, the air inlet pipe is provided with an air compensating valve, and the air compensating valve and the exhaust valve are electrically connected with the barometer.

4. The regeneration system of claim 3, wherein: the end of the air inlet pipe in the flushing agent tank is positioned below the liquid level of the flushing agent.

5. The regeneration system of claim 1, wherein: the washing heating pipe is arranged in the washing agent tank and is communicated with the heat source through a pipeline.

6. The regeneration system of claim 5, wherein: the cleaning device is characterized by further comprising a cleaning heating pipe, wherein the cleaning heating pipe is arranged in the cleaning agent tank, a water outlet and a water return port of the flushing agent tank are respectively communicated with two ends of the cleaning heating pipe through pipelines, and a flushing agent pump is arranged on the pipeline between the flushing agent tank and the cleaning heating pipe.

7. The regeneration system of claim 6, wherein: the flushing agent pump is communicated with a pipeline between a liquid outlet of the flushing agent tank and a shell pass water inlet pipe of the ceramic membrane filter through a pipeline.

8. The regeneration system of claim 5, wherein: the heat source is one of steam, hot water and hot oil, a temperature sensor is arranged in the flushing agent tank, a heat source control valve is arranged on a pipeline between the flushing heating pipe and the heat source, and the heat source control valve is electrically connected with the temperature sensor.

9. The regeneration system of claim 1, wherein: the ceramic membrane filters are connected in series or in parallel, the cleaning agent tanks are connected in parallel, and the cleaning agents in the cleaning agent tanks are the same or different.

Images