CN106824936A - A kind of Distallation systm on-line cleaning device and method - Google Patents
A kind of Distallation systm on-line cleaning device and method Download PDFInfo
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- CN106824936A CN106824936A CN201710001989.1A CN201710001989A CN106824936A CN 106824936 A CN106824936 A CN 106824936A CN 201710001989 A CN201710001989 A CN 201710001989A CN 106824936 A CN106824936 A CN 106824936A
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- destilling tower
- cleaning fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
The invention belongs to coal gas fermentation legal system ethanol distillation technical field, a kind of Distallation systm on-line cleaning device and method are disclosed, device includes：Distilled water pump, destilling tower tower bottoms circulating pump, reboiler, the second cleaning fluid pipeline more than destilling tower, input of column pump, feed pipe, the first cleaning fluid pipeline, on-line cleaning pipeline, destilling tower；Method includes：Not parking in Distallation systm, destilling tower heating system and cooling system stop input of column at full capacity or in the case of operation at part load；Cleaning fluid is communicated to input of column pump intake and destilling tower tower bottoms pump entry, on-line cleaning destilling tower and reboiler.The present invention solves the problems, such as that Distallation systm scavenging period is long in the prior art.Reached carries out on-line cleaning in the case of Distallation systm is not parking to destilling tower and reboiler, shortens scavenging period, improves the technique effect of cleaning efficiency.
Description
Technical field
The present invention relates to coal gas fermentation legal system ethanol distillation technical field, more particularly to a kind of Distallation systm on-line cleaning dress
Put and method.
Background technology
Coal gas ferment ethanol processed be with carbon monoxide as carbon source through bacterial fermentation production ethanol new technology, fermentation liquid into
Solid is mainly thalline in point, and the main component of thalline is protein, protein under the conditions of temperature is more than 50 DEG C, mutability.
Found in actual Distallation systm operation, Distallation systm distillation tower tray floor and reboiler are blocked and be particularly acute.As cleaned stifled not in time
Plug, can significantly influence Distallation systm mass-and heat-transfer.
Dipping by lye mode after Conventional espresso system destilling tower and the main parking using total system of reboiler cleaning, system is stopped
Car, cleaning and driving time used are more than 12 hours.
The content of the invention
The embodiment of the present application is solved and steamed in the prior art by providing a kind of Distallation systm on-line cleaning device and method
Evaporate the problem of cleaning systems overlong time.
The embodiment of the present application provides a kind of Distallation systm on-line cleaning device, including：
Destilling tower；
Input of column pump, the port of export of the input of column pump is connected with the destilling tower；
Feed pipe, the feed pipe is connected with the arrival end of the input of column pump；
First cleaning fluid pipeline, the first cleaning fluid pipeline is connected with the arrival end of the input of column pump；
On-line cleaning pipeline；
Distilled water pump more than destilling tower, the arrival end of distilled water pump is connected with the destilling tower more than the destilling tower, the destilling tower
The port of export of remaining distilled water pump is connected by the on-line cleaning pipeline with the port of export of the input of column pump；
Destilling tower tower bottoms circulating pump, the arrival end of the destilling tower tower bottoms circulating pump is connected with the destilling tower；
Reboiler, one end of the reboiler connects with the port of export of the destilling tower tower bottoms circulating pump, described to boil again
The other end of device is connected with the destilling tower；
Second cleaning fluid pipeline, the second cleaning fluid pipeline connects with the arrival end of the destilling tower tower bottoms circulating pump
It is logical.
Preferably, described device also includes：Concentration of lotion detection means, the concentration of lotion detection means is steamed
Evaporate more than tower at distilled water cleaning fluid and enter the concentration difference at destilling tower between cleaning fluid.
On the other hand, the embodiment of the present application provides a kind of on-line cleaning method of utilization Distallation systm on-line cleaning device,
Including：
It is not parking in Distallation systm, destilling tower heating system and cooling system oepration at full load or operation at part load
In the case of, stop input of column；
Cleaning fluid is communicated to the input of column pump intake, destilling tower described in online wash cycles；
Cleaning fluid is communicated to the destilling tower tower bottoms pump entry, reboiler described in online wash cycles.
Preferably, the operation at part load is 80% load operation.
Preferably, it is described on-line cleaning is carried out to the destilling tower to include：
Stop by the feed pipe to the input of column；
The cleaning fluid is by the first cleaning fluid pipeline communication to the input of column pump, the input of column
Pump is connected with the destilling tower so that the cleaning fluid enters the destilling tower；
Obtain more than destilling tower at distilled water cleaning fluid and enter at destilling tower by the concentration of lotion detection means and clean
Concentration difference between liquid, when the concentration difference is less than or equal to the first concentration difference, stops passing through the first cleaning fluid pipeline
The cleaning fluid is imported, the input of column pump is closed down；
Open the on-line cleaning pipeline, destilling tower described in online wash cycles.
Preferably, it is described on-line cleaning is carried out to the reboiler to include：
Stop by the feed pipe to the input of column；
The cleaning fluid is by the second cleaning fluid pipeline communication to the destilling tower tower bottoms circulating pump, the distillation
Tower tower bottoms circulating pump is connected with the destilling tower so that the cleaning fluid enters the destilling tower；
Obtain more than destilling tower at distilled water cleaning fluid and enter at destilling tower by the concentration of lotion detection means and clean
Concentration difference between liquid, when the concentration difference is more than or equal to the first concentration difference, stops passing through the second cleaning fluid pipeline
Import the cleaning fluid；
By reboiler described in the online wash cycles of destilling tower tower reactor circulating pump.
Preferably, the cleaning fluid is：Temperature is 70-80 DEG C, and concentration is the sig water of 2%-3%.
Preferably, the cleaning fluid is：Temperature is 60-80 DEG C, and concentration is the oxalic acid solution of 10%-15%.
Preferably, the first concentration difference is 10%-20%.
Preferably, the first concentration difference is 15%.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
In the embodiment of the present application, there is provided a kind of Distallation systm on-line cleaning device, it is communicated to steaming by making cleaning fluid
Tower charging pump intake is evaporated, so that cleaning fluid enters in destilling tower, online wash cycles destilling tower is realized；Connected by making cleaning fluid
Destilling tower tower bottoms pump entry is led to, so that cleaning fluid enters destilling tower tower reactor, on-line cleaning Distallation systm is realized again
Boiling device.Distallation systm on-line cleaning device structure design is simple, and it is convenient to realize.Can be issued to clearly in the not parking situation of Distallation systm
The purpose washed, reduces the parking of distillation total system, drives the time, improves cleaning efficiency.On the other hand, there is provided a kind of Distallation systm
On-line cleaning method, input of column pump intake and destilling tower tower bottoms pump entry are respectively communicated with by by cleaning fluid,
Can be not parking in Distallation systm, destilling tower heating system and cooling system are realized at full capacity or under part load operating conditions
On-line cleaning is carried out to destilling tower and reboiler, and expected cleaning performance can be reached at 3-4 hours, improve cleaning efficiency.
Further, in the embodiment of the present application, obtain clear at distilled water more than destilling tower by concentration of lotion detection means
Concentration difference at washing lotion and entrance destilling tower between cleaning fluid, judges whether to stop entering for the cleaning fluid according to the concentration difference
Material, efficiently realizes the on-line cleaning of Distallation systm.
Further, in the embodiment of the present application, compared with Conventional espresso system destilling tower and reboiler cleaning method, have
Effect ground shortens scavenging period, it is to avoid the long fermenting-ripening wine with dregs loss for causing of scavenging period.
Further, in the embodiment of the present application, the diluted alkaline liquid energy in cleaning fluid effectively cleans denatured protein blocking, grass
Acid solution can effectively clean the blocking of salt high temperature crystallization.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the present embodiment, embodiment will be described below needed for be used
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are one embodiment of the present of invention, for this area
For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of Distallation systm on-line cleaning device provided in an embodiment of the present invention.
Wherein, distilled water pump, 4- destilling tower tower bottoms circulating pump, 5- more than 1- destilling towers, 2- input of columns pump, 3- destilling towers
Reboiler, 6- feed pipes, the first cleaning fluids of 7- pipeline, the second cleaning fluids of 8- pipeline, 9- on-line cleanings pipeline, 10- are normally transported
Row pipeline.
Specific embodiment
The embodiment of the present application is solved and steamed in the prior art by providing a kind of Distallation systm on-line cleaning device and method
Evaporate the problem of cleaning systems overlong time.
The technical scheme of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows：
A kind of Distallation systm on-line cleaning device and method are provided, distillation system is realized using Distallation systm on-line cleaning device
The on-line cleaning of system.
Distallation systm on-line cleaning includes：The on-line cleaning of Distallation systm destilling tower and Distallation systm reboiler it is online clear
Wash.
Not parking in Distallation systm, destilling tower heating system and cooling system be at full capacity or under part load operating conditions,
After stopping Distallation systm input of column, cleaning fluid is communicated to input of column pump intake, into destilling tower, online circulation cleaning
Wash destilling tower；Cleaning fluid is communicated to destilling tower tower bottoms pump entry, into destilling tower tower reactor, online wash cycles distillation system
System reboiler.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
Embodiment 1：
A kind of Distallation systm on-line cleaning device is present embodiments provided, as shown in figure 1, including：Destilling tower 1, destilling tower
Distilled water pump 3, destilling tower tower bottoms circulating pump 4, reboiler 5, feed pipe 6, the first cleaning fluid pipeline more than feed pump 2, destilling tower
7th, the second cleaning fluid pipeline 8, on-line cleaning pipeline 9, normal in-service pipeline 10.
The port of export of the input of column pump 2 is connected with the destilling tower 1.
The feed pipe 6 is connected with the arrival end of the input of column pump 2.
The first cleaning fluid pipeline 7 is connected with the arrival end of the input of column pump 2.
The arrival end of distilled water pump 3 is connected with the destilling tower 1 more than the destilling tower, and distilled water pump 3 goes out more than the destilling tower
Mouth end is connected by the on-line cleaning pipeline 9 with the port of export of the input of column pump 2.
The arrival end of the destilling tower tower bottoms circulating pump 4 is connected with the destilling tower 1.
One end of the reboiler 5 connects with the port of export of the destilling tower tower bottoms circulating pump 4, the reboiler 5
The other end is connected with the destilling tower 1.
The second cleaning fluid pipeline 8 is connected with the arrival end of the destilling tower tower bottoms circulating pump 4.
The port of export of distilled water pump 3 is connected more than the normal in-service pipeline 10 and the destilling tower.
The Distallation systm on-line cleaning device that embodiment 1 is provided, input of column pump intake is communicated to by making cleaning fluid,
So that cleaning fluid enters in destilling tower, online wash cycles destilling tower is realized；Destilling tower tower reactor is communicated to by making cleaning fluid
Liquid pump entry, so that cleaning fluid enters destilling tower tower reactor, realizes on-line cleaning Distallation systm reboiler.Distallation systm exists
Line cleaning device structure design is simple, and it is convenient to realize.The purpose of cleaning can be issued in the not parking situation of Distallation systm, be reduced and is steamed
Total system parking, driving time are evaporated, cleaning efficiency is improved.
Embodiment 2：
A kind of Distallation systm on-line cleaning device is present embodiments provided, as shown in figure 1, including：Destilling tower 1, destilling tower
Distilled water pump 3, destilling tower tower bottoms circulating pump 4, reboiler 5, feed pipe 6, the first cleaning fluid pipeline more than feed pump 2, destilling tower
7th, the second cleaning fluid pipeline 8, on-line cleaning pipeline 9, normal in-service pipeline 10.
The port of export of the input of column pump 2 is connected with the destilling tower 1.
The feed pipe 6 is connected with the arrival end of the input of column pump 2.
The first cleaning fluid pipeline 7 is connected with the arrival end of the input of column pump 2.
The arrival end of distilled water pump 3 is connected with the destilling tower 1 more than the destilling tower, and distilled water pump 3 goes out more than the destilling tower
Mouth end is connected by the on-line cleaning pipeline 9 with the port of export of the input of column pump 2.
The arrival end of the destilling tower tower bottoms circulating pump 4 is connected with the destilling tower 1.
One end of the reboiler 5 connects with the port of export of the destilling tower tower bottoms circulating pump 4, the reboiler 5
The other end is connected with the destilling tower 1.
The second cleaning fluid pipeline 8 is connected with the arrival end of the destilling tower tower bottoms circulating pump 4.
The port of export of distilled water pump 3 is connected more than the normal in-service pipeline 10 and the destilling tower.
Distallation systm on-line cleaning device also includes：Concentration of lotion detection means.The concentration of lotion detection means
Obtain more than destilling tower at distilled water cleaning fluid and enter the concentration difference at destilling tower between cleaning fluid.
The Distallation systm on-line cleaning device that embodiment 2 is provided, input of column pump intake is communicated to by making cleaning fluid,
So that cleaning fluid enters in destilling tower, online wash cycles destilling tower is realized；Destilling tower tower reactor is communicated to by making cleaning fluid
Liquid pump entry, so that cleaning fluid enters destilling tower tower reactor, realizes on-line cleaning Distallation systm reboiler.Distallation systm exists
Line cleaning device structure design is simple, and it is convenient to realize.The purpose of cleaning can be issued in the not parking situation of Distallation systm, be reduced and is steamed
Total system parking, driving time are evaporated, cleaning efficiency is improved.Additionally, by concentration of lotion detection means obtain destilling tower more than evaporate
Cleaning fluid and enter the concentration difference at destilling tower between cleaning fluid at water, judged whether to stop the cleaning according to the concentration difference
The charging of liquid, efficiently realizes the on-line cleaning of Distallation systm.
On the other hand, the present embodiment provides a kind of Distallation systm on-line cleaning method.
Embodiment 3：
Using the Distallation systm on-line cleaning device in embodiment 2, Distallation systm on-line cleaning is realized, Distallation systm is online
Cleaning method includes：
It is not parking in Distallation systm, destilling tower heating system and cooling system oepration at full load or operation at part load
In the case of, stop input of column；
Cleaning fluid is communicated to the input of column pump intake, destilling tower described in online wash cycles；
Cleaning fluid is communicated to the destilling tower tower bottoms pump entry, reboiler described in online wash cycles.
The Distallation systm on-line cleaning method that embodiment 3 is provided, input of column pump is respectively communicated with by by cleaning fluid
Entrance and destilling tower tower bottoms pump entry, can be not parking in Distallation systm, and destilling tower heating system and cooling system are full
Under load or part load operating conditions, realization carries out on-line cleaning to destilling tower and reboiler, and can be reached at 3-4 hours
Expected cleaning performance, improves cleaning efficiency.
Embodiment 4：
Using the Distallation systm on-line cleaning device in embodiment 2, Distallation systm on-line cleaning is realized, Distallation systm is online
Cleaning method includes：
It is not parking in Distallation systm, destilling tower heating system and cooling system oepration at full load or 80% load operation
In the case of, on-line cleaning is carried out to the destilling tower and the reboiler by the cleaning fluid.
Wherein, it is described on-line cleaning is carried out to the destilling tower to include：
Stopping is fed by 6 pairs of destilling towers 1 of the feed pipe；
The cleaning fluid is communicated to the input of column pump 2 by the first cleaning fluid pipeline 7, and the destilling tower enters
Material pump 2 is connected with the destilling tower 1 so that the cleaning fluid enters the destilling tower 1；
Obtain more than destilling tower at distilled water cleaning fluid and enter at destilling tower by the concentration of lotion detection means and clean
Concentration difference between liquid, when the concentration difference is less than or equal to the first concentration difference, stops passing through the first cleaning fluid pipeline 7
The cleaning fluid is imported, the input of column pump 2 is closed down；
The on-line cleaning pipeline 9 is opened, destilling tower 1 described in online wash cycles.
Wherein, it is described on-line cleaning is carried out to the reboiler to include：
Stopping is fed by 6 pairs of destilling towers 1 of the feed pipe；
The cleaning fluid is communicated to the destilling tower tower bottoms circulating pump 4, the steaming by the second cleaning fluid pipeline 8
Evaporate tower tower bottoms circulating pump 4 to be connected with the destilling tower 1 so that the cleaning fluid enters the destilling tower 1；
Obtain more than destilling tower at distilled water cleaning fluid and enter at destilling tower by the concentration of lotion detection means and clean
Concentration difference between liquid, when the concentration difference is more than or equal to the first concentration difference, stops passing through the second cleaning fluid pipeline 8
Import the cleaning fluid；
By reboiler 5 described in the online wash cycles of the destilling tower tower reactor circulating pump 4.
The first concentration difference is 10%-20%, preferably 15%.
The cleaning fluid is：Temperature is 70-80 DEG C, and concentration is the sig water of 2%-3%；Or the cleaning fluid is：Temperature
It is 60-80 DEG C to spend, and concentration is the oxalic acid solution of 10%-15%.
Embodiment 4 provides a kind of Distallation systm on-line cleaning method.
Specifically, destilling tower on-line cleaning step is：Destilling tower heating system and condenser system keep at full capacity or 80%
Load operation, stops the input of column, and the cleaning fluid is entered by being communicated to the inlet duct of input of column pump 2
The destilling tower 1, distilled water concentration of lotion and enters destilling tower concentration of lotion and is more or less the same when 15% more than detection destilling tower, stops
Only destilling tower cleaning fluid charging, closes down the input of column pump 2, opens the on-line cleaning pipeline 9, online wash cycles institute
State destilling tower 1.After cleaning 3-4 hours, start the input of column pump 2, be the destilling tower 1 by the feed pipe 6
Charging, closes the on-line cleaning pipeline 9, opens normal in-service pipeline 10, and the on-line cleaning of the destilling tower 1 is finished.
Specifically, reboiler on-line cleaning step is：Destilling tower heating system and condenser system keep at full capacity or 80%
Load operation, stops input of column, and cleaning fluid enters described by being communicated to the preceding pipeline of destilling tower tower bottoms circulating pump 4
Destilling tower 1, distilled water concentration of lotion and enters Distallation systm destilling tower concentration of lotion difference not less than 15% more than detection destilling tower
When, stop the charging of destilling tower cleaning fluid, by reboiler 5 described in the wash cycles of destilling tower tower reactor circulating pump 4, clean 3-4
After hour, start the input of column pump 2, fed by the feed pipe 6, the on-line cleaning of the reboiler 5 is finished.
The Distallation systm on-line cleaning method that embodiment 4 is provided, input of column pump is respectively communicated with by by cleaning fluid
Entrance and destilling tower tower bottoms pump entry, can be not parking in Distallation systm, and destilling tower heating system and cooling system are full
Under load or part load operating conditions, realization carries out on-line cleaning to destilling tower and reboiler, and can be reached at 3-4 hours
Expected cleaning performance, improves cleaning efficiency.Compared with Conventional espresso system destilling tower and reboiler cleaning method, effectively contract
Short scavenging period, it is to avoid the scavenging period long fermenting-ripening wine with dregs for causing loses.Diluted alkaline liquid energy in cleaning fluid is effectively clear
Denatured protein blocking is washed, oxalic acid solution can effectively clean the blocking of salt high temperature crystallization.
A kind of Distallation systm on-line cleaning device provided in an embodiment of the present invention and method at least include following technique effect：
1. in the embodiment of the present application, there is provided a kind of Distallation systm on-line cleaning device, it is communicated to by making cleaning fluid
Input of column pump intake, so that cleaning fluid enters in destilling tower, realizes online wash cycles destilling tower；By making cleaning fluid
Destilling tower tower bottoms pump entry is communicated to, so that cleaning fluid enters destilling tower tower reactor, on-line cleaning Distallation systm is realized
Reboiler.Distallation systm on-line cleaning device structure design is simple, and it is convenient to realize.Can be issued in the not parking situation of Distallation systm
The purpose of cleaning, reduces the parking of distillation total system, drives the time, improves cleaning efficiency.On the other hand, there is provided one kind distillation system
System on-line cleaning method, is circulated by the way that cleaning fluid is respectively communicated with into input of column pump intake and destilling tower tower bottoms and pumped into
Mouthful, can be not parking in Distallation systm, destilling tower heating system and cooling system are real at full capacity or under part load operating conditions
On-line cleaning is now carried out to destilling tower and reboiler, and expected cleaning performance can be reached at 3-4 hours, improve cleaning effect
Rate.
2. cleaning fluid in the embodiment of the present application, is obtained more than destilling tower at distilled water by concentration of lotion detection means and is entered
Enter the concentration difference between cleaning fluid at destilling tower, judged whether to stop the charging of the cleaning fluid according to the concentration difference, efficiently
Realize the on-line cleaning of Distallation systm.
3. in the embodiment of the present application, compared with Conventional espresso system destilling tower and reboiler cleaning method, effectively contract
Short scavenging period, it is to avoid the scavenging period long fermenting-ripening wine with dregs for causing loses.
4. in the embodiment of the present application, the diluted alkaline liquid energy in cleaning fluid effectively cleans denatured protein blocking, oxalic acid solution
The blocking of salt high temperature crystallization can effectively be cleaned.
It should be noted last that, above specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should cover
In the middle of scope of the presently claimed invention.
Claims (10)
1. a kind of Distallation systm on-line cleaning device, it is characterised in that described device includes：
Destilling tower；
Input of column pump, the port of export of the input of column pump is connected with the destilling tower；
Feed pipe, the feed pipe is connected with the arrival end of the input of column pump；
First cleaning fluid pipeline, the first cleaning fluid pipeline is connected with the arrival end of the input of column pump；
On-line cleaning pipeline；
Distilled water pump more than destilling tower, the arrival end of distilled water pump is connected with the destilling tower more than the destilling tower, is evaporated more than the destilling tower
The port of export of water pump is connected by the on-line cleaning pipeline with the port of export of the input of column pump；
Destilling tower tower bottoms circulating pump, the arrival end of the destilling tower tower bottoms circulating pump is connected with the destilling tower；
Reboiler, one end of the reboiler connects with the port of export of the destilling tower tower bottoms circulating pump, the reboiler
The other end is connected with the destilling tower；
Second cleaning fluid pipeline, the second cleaning fluid pipeline is connected with the arrival end of the destilling tower tower bottoms circulating pump.
2. Distallation systm on-line cleaning device according to claim 1, it is characterised in that described device also includes：
Concentration of lotion detection means, the concentration of lotion detection means obtains more than destilling tower at distilled water cleaning fluid and enters steams
Evaporate the concentration difference between cleaning fluid at tower.
3. using the on-line cleaning method of the Distallation systm on-line cleaning device described in claim 2, it is characterised in that the side
Method includes：
It is not parking in Distallation systm, the situation of destilling tower heating system and cooling system oepration at full load or operation at part load
Under, stop input of column；
Cleaning fluid is communicated to the input of column pump intake, destilling tower described in online wash cycles；
Cleaning fluid is communicated to the destilling tower tower bottoms pump entry, reboiler described in online wash cycles.
4. Distallation systm on-line cleaning method according to claim 3, it is characterised in that the operation at part load is
80% load operation.
5. Distallation systm on-line cleaning method according to claim 3, it is characterised in that described to be carried out to the destilling tower
On-line cleaning includes：
Stop by the feed pipe to the input of column；
The cleaning fluid by the first cleaning fluid pipeline communication to the input of column pump, the input of column pump with
The destilling tower connection so that the cleaning fluid enters the destilling tower；
Cleaning fluid is obtained more than destilling tower at distilled water by the concentration of lotion detection means and enter at destilling tower cleaning fluid it
Between concentration difference, when the concentration difference be less than or equal to the first concentration difference when, stop by the first cleaning fluid pipeline importing
The cleaning fluid, closes down the input of column pump；
Open the on-line cleaning pipeline, destilling tower described in online wash cycles.
6. Distallation systm on-line cleaning method according to claim 3, it is characterised in that described to be carried out to the reboiler
On-line cleaning includes：
Stop by the feed pipe to the input of column；
The cleaning fluid is by the second cleaning fluid pipeline communication to the destilling tower tower bottoms circulating pump, the destilling tower tower
Kettle liquid circulating pump is connected with the destilling tower so that the cleaning fluid enters the destilling tower；
Cleaning fluid is obtained more than destilling tower at distilled water by the concentration of lotion detection means and enter at destilling tower cleaning fluid it
Between concentration difference, when the concentration difference be more than or equal to the first concentration difference when, stop by the second cleaning fluid pipeline importing
The cleaning fluid；
By reboiler described in the online wash cycles of destilling tower tower reactor circulating pump.
7. Distallation systm on-line cleaning method according to claim 3, it is characterised in that the cleaning fluid is：Temperature is
70-80 DEG C, concentration is the sig water of 2%-3%.
8. Distallation systm on-line cleaning method according to claim 3, it is characterised in that the cleaning fluid is：Temperature is
60-80 DEG C, concentration is the oxalic acid solution of 10%-15%.
9. the Distallation systm on-line cleaning method according to claim 5 or claim 6, it is characterised in that described first
Concentration difference is 10%-20%.
10. the Distallation systm on-line cleaning method according to claim 5 or claim 6, it is characterised in that described first
Concentration difference is 15%.
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| CN201710001989.1A CN106824936B (en) | 2017-01-03 | 2017-01-03 | Online cleaning device and method for distillation system |
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| CN201710001989.1A CN106824936B (en) | 2017-01-03 | 2017-01-03 | Online cleaning device and method for distillation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802091A (en) * | 2019-11-13 | 2020-02-18 | 山东成武易信环保科技有限公司 | Method for cleaning distiller for DOTP production |
| CN113582837A (en) * | 2021-08-17 | 2021-11-02 | 安徽金禾实业股份有限公司 | Method and device for online switching and cleaning of diketene acetic acid recovery system |
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| CN113582837A (en) * | 2021-08-17 | 2021-11-02 | 安徽金禾实业股份有限公司 | Method and device for online switching and cleaning of diketene acetic acid recovery system |
| CN113582837B (en) * | 2021-08-17 | 2023-10-20 | 安徽金禾实业股份有限公司 | Online switching cleaning method and device for diketene acetic acid recovery system |
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