CN206886716U - A kind of MVR evaporators plate steam channel downflow type string cleaning device - Google Patents
A kind of MVR evaporators plate steam channel downflow type string cleaning device Download PDFInfo
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- CN206886716U CN206886716U CN201720783208.4U CN201720783208U CN206886716U CN 206886716 U CN206886716 U CN 206886716U CN 201720783208 U CN201720783208 U CN 201720783208U CN 206886716 U CN206886716 U CN 206886716U
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- mvr evaporators
- pass line
- tank
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Abstract
The utility model discloses a kind of MVR evaporators plate steam channel downflow type string cleaning device, the device increases a by-pass line between MVR evaporators and pump discharge of removing contamination, while the lautertuns and sewage disposal pump preceding pipeline of the dirty pot bottom of weight are connected with pipeline；Cleaning fluid adds tank of removing contamination, and is pumped into MVR evaporator plate steam channels through by-pass line by sewage disposal pump, cleans plate from the bottom to top, and eluate flows into the dirty tank of weight, is pumped into MVR evaporators by removing contamination again after filtering, moves in circles, realize that downflow type string is washed.The utility model, which only increases some pipelines, thoroughly to be cleaned to MVR evaporator plate steam sides, and small investment is simple, convenient.
Description
Technical field
It the utility model is related to reducing rules waste water evaporation process field, and in particular to a kind of MVR evaporators plate steam leads to
Road downflow type string cleaning device.
Background technology
Reducing rules waste water is compared with utilizing black pulp liquor, and the composition of its solid content is similar, but solid concentration is low.For ring
Protect, realize utilization of wastewater resource, have started to give up to handle reducing rules using utilizing black pulp liquor alkali recovery technology at present both at home and abroad
Water, but the key for restricting this treatment technology economy is exactly the evaporation efficiency and operating cost of low density wastewater.It was verified that machine
Tool vapor recompression（MVR）Evaporator is a kind of evaporation equipment of the low dense reducing rules waste water of economical and efficient, it is only necessary to when starting shooting
Steam is passed through, just utilizes indirect steam caused by its own afterwards, is used through compressor compression Posterior circle, the thermal efficiency is very high.
But because reducing rules waste water is in addition to containing inorganic matters such as carbohydrate, lignin, extract and alkali, also containing fine suspension,
Calcium and magnesium, silicon etc. are easily inevitably brought into a small amount of into dirty component into dirty component, therefore in caused indirect steam, and its is continuous
Accumulation may result in evaporator plate internal incrustation, cause evaporation efficiency drastically to decline, and operating cost rise, cause to give birth to when serious
Production can not be carried out.
At present, the processing of evaporator plate fouling is concentrated on in waste water into the control of dirty component, and to evaporator
Steam side panels internal incrustation does not have correlation process method then.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides one kind and MVR evaporator plates steam side can be carried out
The downflow type wash mill thoroughly cleaned, carry out increasing some pipelines, it is simple, convenient.
The utility model is achieved through the following technical solutions.
The device that a kind of MVR evaporators plate steam channel downflow type string is washed, the device include MVR evaporators 1, the dirty tank of weight
2nd, remove contamination tank 4, weight dirt pump 5, sewage disposal pump 6, the first valve 7, the 3rd valve 9, the 4th valve 10, the 5th valve 11, the 6th valve
12 and pressure sensor 14, in addition to by-pass line A and by-pass line B, it is provided with the purge outlet end of MVR evaporators 1
By-pass line A, the by-pass line A one end are connected on the pipeline between the valve 7 of sewage disposal pump 6 and first by pipeline, separately
One end is connected on the pipeline between the purge outlet of MVR evaporators 1 and the 3rd valve 9 by pipeline, is set on the by-pass line A
There is the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the arrival end of the by-pass line B is connected to by pipeline
The bottom of weight dirt tank 2, on the pipeline that the port of export is connected to sewage disposal pump 6 between tank 4 of removing contamination by pipeline, the by-pass line B
Lautertuns 3, the 7th valve 13 are disposed with from arrival end to the port of export.
Preferably, screen pack is carried on the lautertuns.
It is further preferred that the screen pack is one kind in stainless (steel) wire and acid and alkali-resistance filter cloth.
Preferably, the gas outlet of the MVR evaporators 1 is connected with non-condensable gas pipeline, and along fixed gas export direction, is not coagulated
Pressure sensor 14, the 4th valve 10 are disposed with feed channel；The purge outlet of MVR evaporators 1 and the pipeline company that removes contamination
Connect, the pipeline of removing contamination is disposed with the 3rd valve 9, tank 4 of removing contamination, sewage disposal pump 6, the first valve 7 along clean and dirt water export direction；
It is connected above the side of MVR evaporators 1 with the dirty pipeline of weight, the heavy dirty pipeline is disposed with the 5th along weight outlet of sewer direction
Valve 11, weight dirt tank 2, weight dirt pump 5, the 6th valve 12.
A kind of method for realizing that MVR evaporator plate steam channel downflow type strings wash using devices discussed above, including
Following steps：
（1）Increase a by-pass line A at the purge outlet end of MVR evaporators 1, one end of the by-pass line A passes through pipe
Road is connected on the pipeline between the valve 7 of sewage disposal pump 6 and first, and the other end is connected to MVR evaporator purge outlets by pipeline
On pipeline between the 3rd valve 9, the by-pass line A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with bypass
Pipeline B, the arrival end of the by-pass line B are connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to clearly by pipeline
Removing contamination on pipeline between dirty pump 6 and tank 4 of removing contamination, the by-pass line B are disposed with lautertuns from arrival end to the port of export
3rd, the 7th valve 13；
（2）Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12
With the 7th valve 13, the 3rd valve 9 and the 5th valve 11 are opened；Cleaning fluid is pumped into tank 4 of removing contamination, cleaning fluid is evaporated from MVR
Device bottom enters, and overflows to weight dirt tank 2 and arrives lautertuns 3 again, stops addition cleaning fluid when cleaning fluid is full of lautertuns 3；
（3）The 3rd valve 9 is closed, starts sewage disposal pump 6, slowly opens the 7th valve 13 and the second valve 8, evaporate MVR
Device plate cleaning liquid inside flows from bottom to up, carries out downflow type string and washes.
Preferably, step（2）Described cleaning fluid is one kind or more in alkaline solution, acid solution and contaminant removing cleaning agent
Kind.
Preferably, step（3）During described downflow type string is washed, the temperature of cleaning fluid remains 70-90 DEG C.
Preferably, step（3）During described downflow type string is washed, MVR evaporators top pressure is controlled in below 0.8bar.
Compared with prior art, the utility model has the following advantages that and beneficial effect：
（1）The utility model utilizes existing MVR evaporator pipelines, only increases a bypass line, and by lautertuns and clearly
The connection of dirty pump preceding pipeline, when evaporation efficiency is decreased obviously, it can shut down to carry out shutting down string and wash, remove the dirt inside plate in time
Layer, plate cleaning is kept, recovers MVR evaporation efficiencies.
（2）Lautertuns of the present utility model is provided with filter, contains inside plate after string is washed, in eluate and flushes out
The impurity such as scum silica frost dirt, after filtered processing, the dirt that can prevent from washing out is entered back into inside evaporator plate, improves cleaning efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model MVR evaporator plate steam channel downflow type string cleaning devices.
Embodiment
To further understand the utility model, the specific implementation to utility model with reference to the accompanying drawings and examples is made detailed
Illustrate, but the scope of the requires of the utility model protection is not limited to the scope of embodiment statement.
The structural representation such as Fig. 1 for the MVR evaporator plate steam channel downflow type string cleaning devices that following examples use
It is shown.The device include MVR evaporators 1, weight dirt tank 2, lautertuns 3, tank 4 of removing contamination, weight dirt pump 5, sewage disposal pump 6, the first valve 7,
Second valve 8, the 3rd valve 9, the 4th valve 10, the 5th valve 11, the 6th valve 12, the 7th valve 13 and pressure sensor
14；The gas outlet of the MVR evaporators 1 is connected with non-condensable gas pipeline, and along fixed gas export direction, on non-condensable gas pipeline successively
It is provided with pressure sensor 14, the 4th valve 10；The purge outlet of MVR evaporators 1 is connected with pipeline of removing contamination, the decontamination orifice
Road is disposed with the 3rd valve 9, tank 4 of removing contamination, sewage disposal pump 6, the first valve 7 along clean and dirt water export direction；In MVR evaporators 1
One end that purge outlet end is provided with by-pass line A, the by-pass line A is connected to the valve 7 of sewage disposal pump 6 and first by pipeline
Between pipeline on, the other end is connected on the pipeline between the purge outlet of MVR evaporators 1 and the 3rd valve 9 by pipeline, institute
State by-pass line A and be provided with the second valve 8；It is connected above the side of MVR evaporators 1 with the dirty pipeline of weight, the heavy dirty pipeline edge
Weight outlet of sewer direction is disposed with the 5th valve 11, weight dirt tank 2, weight dirt pump 5, the 6th valve 12；Set in the bottom of weight dirt tank 2
By-pass line B is equipped with, the arrival end of the by-pass line B is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export passes through pipeline
The removing contamination on pipeline between tank 4 of removing contamination that be connected to sewage disposal pump 6, the by-pass line B are set gradually from arrival end to the port of export
There are lautertuns 3, the 7th valve 13.
Embodiment 1
Increase a by-pass line A between MVR evaporators 1 and sewage disposal pump 6 export, its one end is connected to clearly by pipeline
On pipeline between the dirty valve 7 of pump 6 and first, the other end is connected to MVR evaporators purge outlet and the 3rd valve 9 by pipeline
Between pipeline on, bypass duct A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the side simultaneously
Road pipeline B arrival end is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to sewage disposal pump 6 by pipeline and removed contamination
Removing contamination on pipeline between tank 4, the by-pass line B are disposed with lautertuns 3, the 7th valve from arrival end to the port of export
13.Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12 and the 7th valve
Door 13, open the 3rd valve 9 and the 5th valve 11；Alkali collection white liquor is pumped into tank 4 of removing contamination, it is entered from MVR base of evaporators
Enter, overflow enters weight dirt tank 2, and flows into the lautertuns 3 equipped with stainless steel filter screen, when alkali collection white liquor is full of lautertuns 3
Stop liquid feeding.The 3rd valve 9 is closed, starts sewage disposal pump 6, slowly opens the 7th valve 13 and the second valve 8, makes to clean in plate
Liquid flows from bottom to up, carries out downflow type string and washes；String washes temperature and remains 90 DEG C, and top pressure is controlled in 0-0.2bar.Using
After this method processing, evaporator liquid inlet volume returns to previous level, cycle of operation increase by more than 50%.
Embodiment 2
Increase a by-pass line A between MVR evaporators 1 and sewage disposal pump 6 export, its one end is connected to clearly by pipeline
On pipeline between the dirty valve 7 of pump 6 and first, the other end is connected to MVR evaporators purge outlet and the 3rd valve 9 by pipeline
Between pipeline on, bypass duct A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the side simultaneously
Road pipeline B arrival end is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to sewage disposal pump 6 by pipeline and removed contamination
Removing contamination on pipeline between tank 4, the by-pass line B are disposed with lautertuns 3, the 7th valve from arrival end to the port of export
13.Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12 and with the 7th
Valve 13, open the 3rd valve 9 and the 5th valve 11；Watery hydrochloric acid is pumped into tank 4 of removing contamination, it is entered from MVR base of evaporators,
Overflow enters weight dirt tank 2, and flows into the lautertuns 3 equipped with acid and alkali-resistance filter cloth, stops liquid feeding when watery hydrochloric acid is full of lautertuns 3.
Close the 3rd valve 9, start sewage disposal pump 6, slowly open the 7th valve 13 and the second valve 8, make plate cleaning liquid inside from it is lower to
Upper flowing, carry out downflow type string and wash；String washes temperature and remains 70 DEG C, and top pressure is controlled in 0.4-0.6bar.Using this method
After processing, evaporator liquid inlet volume returns to previous level, cycle of operation increase by more than 50%.
Embodiment 3
Increase a by-pass line A between MVR evaporators 1 and sewage disposal pump 6 export, its one end is connected to clearly by pipeline
On pipeline between the dirty valve 7 of pump 6 and first, the other end is connected to MVR evaporators purge outlet and the 3rd valve 9 by pipeline
Between pipeline on, bypass duct A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the side simultaneously
Road pipeline B arrival end is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to sewage disposal pump 6 by pipeline and removed contamination
Removing contamination on pipeline between tank 4, the by-pass line B are disposed with lautertuns 3, the 7th valve from arrival end to the port of export
13.Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12 and with the 7th
Valve 13, open the 3rd valve 9 and the 5th valve 11；Contaminant removing cleaning agent is pumped into tank 4 of removing contamination, makes it from MVR base of evaporators
Into overflow enters weight dirt tank 2, and flows into the lautertuns 3 equipped with stainless steel filter screen, when contaminant removing cleaning agent is full of lautertuns 3
When stop liquid feeding.The 3rd valve 9 is closed, starts sewage disposal pump 6, slowly opens the 7th valve 13 and the second valve 8, is made clear in plate
Washing lotion flows from bottom to up, carries out downflow type string and washes；String washes temperature and remains 80 DEG C, and top pressure is controlled in 0.6-0.8bar.
After being handled using this method, evaporator liquid inlet volume returns to previous level, cycle of operation increase by more than 50%.
Embodiment 4
Increase a by-pass line A between MVR evaporators 1 and sewage disposal pump 6 export, its one end is connected to clearly by pipeline
On pipeline between the dirty valve 7 of pump 6 and first, the other end is connected to MVR evaporators purge outlet and the 3rd valve 9 by pipeline
Between pipeline on, bypass duct A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the side simultaneously
Road pipeline B arrival end is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to sewage disposal pump 6 by pipeline and removed contamination
Removing contamination on pipeline between tank 4, the by-pass line B are disposed with lautertuns 3, the 7th valve from arrival end to the port of export
13.Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12 and with the 7th
Valve 13, open the 3rd valve 9 and the 5th valve 11；Caustic lye of soda and descaling cleaning agent are pumped into tank 4 of removing contamination to be mixed, mixed
Liquid enters from MVR base of evaporators, and overflow enters weight dirt tank 2, and flows into the lautertuns 3 equipped with stainless steel filter screen, works as mixing
Liquid stops liquid feeding when being full of lautertuns 3.The 3rd valve 9 is closed, starts sewage disposal pump 6, slowly opens the 7th valve 13 and the second valve
Door 8, makes plate cleaning liquid inside flow from bottom to up, carries out downflow type string and washes；String washes temperature and remains 85 DEG C, top pressure control
In 0.4-0.6bar.After being handled using this method, evaporator liquid inlet volume returns to previous level, cycle of operation increase by more than 50%.
Embodiment 5
Increase a by-pass line A between MVR evaporators 1 and sewage disposal pump 6 export, its one end is connected to clearly by pipeline
On pipeline between the dirty valve 7 of pump 6 and first, the other end is connected to MVR evaporators purge outlet and the 3rd valve 9 by pipeline
Between pipeline on, bypass duct A is provided with the second valve 8；The bottom of weight dirt tank 2 is provided with by-pass line B, the side simultaneously
Road pipeline B arrival end is connected to the bottom of weight dirt tank 2 by pipeline, and the port of export is connected to sewage disposal pump 6 by pipeline and removed contamination
Removing contamination on pipeline between tank 4, the by-pass line B are disposed with lautertuns 3, the 7th valve from arrival end to the port of export
13.Sewage disposal pump 6 and weight dirt pump 5 are closed, closes the first valve 7, the second valve 8, the 4th valve 10, the 6th valve 12 and with the 7th
Valve 13, open the 3rd valve 9 and the 5th valve 11；Burning hydrochloric acid and descaling cleaning agent are pumped into tank 4 of removing contamination to be mixed, mixed
Liquid enters from MVR base of evaporators, and overflow enters weight dirt tank 2, and flows into the lautertuns 3 equipped with stainless steel filter screen, works as mixing
Liquid stops liquid feeding when being full of lautertuns 3.The 3rd valve 9 is closed, starts sewage disposal pump 6, slowly opens the 7th valve 13 and the second valve
Door 8, makes plate cleaning liquid inside flow from bottom to up, carries out downflow type string and washes；String washes temperature and remains 75 DEG C, top pressure control
In 0.2-0.4bar.After being handled using this method, evaporator liquid inlet volume returns to previous level, cycle of operation increase by more than 50%.
Claims (6)
1. a kind of MVR evaporators plate steam channel downflow type string cleaning device, the device include MVR evaporators（1）, the dirty tank of weight
（2）, tank of removing contamination（4）, the dirty pump of weight（5）, sewage disposal pump（6）, the first valve（7）, the 3rd valve（9）, the 4th valve（10）, the 5th valve
Door（11）, the 6th valve（12）And pressure sensor（14）, it is characterised in that also including by-pass line A and by-pass line B,
The MVR evaporators（1）Purge outlet end is provided with by-pass line A, and one end of the by-pass line A is connected to clearly by pipeline
Dirty pump（6）With the first valve（7）Between pipeline on, the other end is connected to MVR evaporators by pipeline（1）Purge outlet and
Three valves（9）Between pipeline on, the by-pass line A is provided with the second valve（8）；In the heavy dirty tank（2）Bottom is set
The arrival end for having by-pass line B, the by-pass line B is connected to the dirty tank of weight by pipeline（2）Bottom, the port of export passes through pipeline
It is connected to sewage disposal pump（6）With tank of removing contamination（4）Between pipeline on, the by-pass line B is set gradually from arrival end to the port of export
There is lautertuns（3）, the 7th valve（13）.
A kind of 2. MVR evaporators plate steam channel downflow type string cleaning device according to claim 1, it is characterised in that
Screen pack is carried on the lautertuns.
A kind of 3. MVR evaporators plate steam channel downflow type string cleaning device according to claim 2, it is characterised in that
The screen pack is one kind in stainless (steel) wire and acid and alkali-resistance filter cloth.
A kind of 4. MVR evaporators plate steam channel downflow type string cleaning device according to claim 1, it is characterised in that
The MVR evaporators（1）Gas outlet be connected with non-condensable gas pipeline, and along fixed gas export direction, on non-condensable gas pipeline successively
It is provided with pressure sensor（14）, the 4th valve（10）.
A kind of 5. MVR evaporators plate steam channel downflow type string cleaning device according to claim 1, it is characterised in that
The MVR evaporators（1）Purge outlet is connected with pipeline of removing contamination, and the pipeline of removing contamination is disposed with along clean and dirt water export direction
3rd valve（9）, tank of removing contamination（4）, sewage disposal pump（6）, the first valve（7）.
A kind of 6. MVR evaporators plate steam channel downflow type string cleaning device according to claim 1, it is characterised in that
The MVR evaporators（1）It is connected with weighing dirty pipeline above side, the heavy dirty pipeline is disposed with the along weight outlet of sewer direction
Five valves（11）, the dirty tank of weight（2）, the dirty pump of weight（5）, the 6th valve（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783208.4U CN206886716U (en) | 2017-06-30 | 2017-06-30 | A kind of MVR evaporators plate steam channel downflow type string cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783208.4U CN206886716U (en) | 2017-06-30 | 2017-06-30 | A kind of MVR evaporators plate steam channel downflow type string cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206886716U true CN206886716U (en) | 2018-01-16 |
Family
ID=61299028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720783208.4U Expired - Fee Related CN206886716U (en) | 2017-06-30 | 2017-06-30 | A kind of MVR evaporators plate steam channel downflow type string cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206886716U (en) |
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2017
- 2017-06-30 CN CN201720783208.4U patent/CN206886716U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20210630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |