CN107774008A - The apparatus and method that a kind of physical absorption improves UV transmittance of ethylene glycol - Google Patents
The apparatus and method that a kind of physical absorption improves UV transmittance of ethylene glycol Download PDFInfo
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- CN107774008A CN107774008A CN201610737793.4A CN201610737793A CN107774008A CN 107774008 A CN107774008 A CN 107774008A CN 201610737793 A CN201610737793 A CN 201610737793A CN 107774008 A CN107774008 A CN 107774008A
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- ethylene glycol
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
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- Organic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The present invention relates to the device that a kind of physical absorption improves UV transmittance of ethylene glycol.The device includes at least two refined adsorbent beds, is connected between the adsorbent bed by pipeline, and the pipeline is provided with the valve for being used for controlling refined absorption bed operating.The invention further relates to a kind of method that physical absorption improves UV transmittance of ethylene glycol.This method can refine the operational mode of adsorbent bed with flexible modulation, improve the utilization rate of refined adsorbent bed, the requirement to quality of ethylene glycol product can be met, and can makes full use of the adsorbent in refined adsorbent bed, extend the usage time of adsorbent, the cost of coal-ethylene glycol is reduced, is increased economic efficiency.
Description
Technical field
The invention belongs to the production technical field of ethylene glycol, and in particular to a kind of physical absorption improves the dress of UV transmittance of ethylene glycol
Put and method.
Background technology
Ethylene glycol is a kind of important Organic Chemicals, and purposes is quite varied, mainly for the production of polyester fiber, antifreeze
Agent, unsaturated polyester resin, lubricant, plasticizer and nonionic surfactant etc., it may also be used for coating, soup,
Brake-fluid and ink industry.
The production of large-scale ethylene glycol is petroleum law both at home and abroad at present, and its primary raw material is ethene and oxygen, is catalyzed with silver
As steady agent is caused, then direct oxidation of ethylene to regenerates ethylene glycol into oxirane for agent, methane or nitrogen.But with oil
The increasingly depleted of resource, the ethylene glycol of the technique productions can not meet the needs of whole world is growing to ethylene glycol completely.
In the 1970s, the research using coal as Material synthesis ethylene glycol is carried out.
Product quality as one of several big difficult points of coal-ethylene glycol technology can reach polyester requirement, product it is ultraviolet
Can light rate reach national standard, be an important topic of current each research institution.And except being removed using chemical method in product
Impurity, improve UV (Ultra-Violet Ray) value method outside, using physical absorption be at present it is more ripe, effective one
Kind means.But price is high, service life is short, adsorbent failure reproducting periods product matter there is such as adsorbing for physical adsorption process
Amount such as can not ensure at the various problems.
Therefore, the problem of presently, there are, which is that urgent need research and development are a kind of, can make full use of adsorbent, extend adsorbent
Usage time, reduce the apparatus and method that the physical absorption of coal-ethylene glycol cost improves UV transmittance of ethylene glycol.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of physical absorption improves
The apparatus and method of UV transmittance of ethylene glycol.The device includes at least two refined adsorbent beds, passes through pipe between the refined adsorbent bed
Line connects, and the pipeline is provided with the valve for being used for controlling exquisite absorption bed operating.The inventive method can the refined suction of flexible modulation
The operational mode of attached bed, on the premise of quality of ethylene glycol product is ensured, the utilization rate of refined adsorbent bed is improved, reduces coal second
The cost of glycol, increases economic efficiency.
Therefore, first aspect present invention provides the device that a kind of physical absorption improves UV transmittance of ethylene glycol, it is included at least
Two refined adsorbent beds；Connected between the refined adsorbent bed by pipeline；The pipeline, which is provided with, to be used to control refined absorption
The valve of bed operating.
According to the present invention, the operational mode between refined adsorbent bed in described device includes any one refined adsorbent bed
Isolated operation, at least two refined adsorbent beds are with from a refined adsorbent bed outlet to next refined adsorbent bed entrance
The parallel way that series system ran or entered simultaneously with ethylene glycol raw material at least two refined adsorbent bed entrances is run.
According to the present invention, cross-line short circuit pipeline is provided with described device.
According to the present invention, multiple tracks valve, blind plate are set in described device, ensure in running mode switching or series connection or
It can ensure during parallel running mutually completely isolated between material.
According to the present invention, described device also includes ethylene glycol material inlet, ethylene glycol product discharging opening and sewage draining exit.
For the present invention in the refined adsorbent bed of pretreatment, all refined adsorbent beds can share same root utility line, input and output material
Pipeline etc., such as blowdown pipeline.
According to the present invention, the ethylene glycol material inlet and the ethylene glycol product discharging opening are equipped with quality inspection analysis and taken
The sampling cabinet that sampling point, the quality of the ethylene glycol raw material and the quality of the ethylene glycol product are set by quality inspection analytical sampling point
Sampling analysis obtains.
According to the present invention, the ethylene glycol raw material is from glycol unit rectification cell output.
Second aspect of the present invention provides one kind and utilizes first aspect present invention described device to carry out physical absorption raising second
The method of glycol UV values, its ethylene glycol raw material for including from charging aperture to enter through refine adsorbent bed adsorption treatment after obtain from
The ethylene glycol product of discharging opening outflow.
According to the inventive method, the quality of the ethylene glycol product from discharging opening outflow meets high-class product second two in national standard
The UV value indexs of alcohol：220nm UV transmittance >=75%, 275nm UV transmittance >=92%, 350nm ultraviolet printing opacity
Rate >=99%.
According to the inventive method, when separate unit refines adsorbent bed volume space velocity no more than the technological requirement in technical protocol, list
Platform refines adsorbent in adsorbent bed and is not up to its design service life, and the quality of the ethylene glycol product from discharging opening outflow meets
In national standard during the UV value indexs of high-class product ethylene glycol, any one refined adsorbent bed isolated operation in the refined adsorbent bed or
Bypass of the part by connecting the inlet and outlet of separate unit or more than two refined adsorbent beds is run.Suction can either so be made full use of
Attached bed, quality of ethylene glycol product can be ensured again.
According to the inventive method, when separate unit refines adsorbent bed volume space velocity no more than the technological requirement in technical protocol, list
Platform refines adsorbent in adsorbent bed and exceedes its design service life, or the quality of the ethylene glycol product from discharging opening outflow can not expire
During foot is international during the UV value indexs of high-class product ethylene glycol, at least two refined adsorbent beds in the refined adsorbent bed are with from one
The series system of refined adsorbent bed outlet to next refined adsorbent bed entrance is run.It can either so meet to ethylene glycol
The requirement of product quality, the refined adsorbent bed of hydraulic performance decline can be made full use of again, the refined adsorbent bed newly run is also functioned to
Protective effect.
According to the inventive method, when separate unit, which refines adsorbent bed volume space velocity, exceedes the technological requirement in technical protocol, institute
Refined adsorbent bed is stated with ethylene glycol raw material while enters the parallel way operation of at least two refined adsorbent bed entrances.So both may be used
To make full use of refined adsorbent bed, the quality of ethylene glycol product can be ensured again.
According to the inventive method, when the quality of the ethylene glycol raw material of charging aperture has reached the UV of high-class product ethylene glycol in national standard
When being worth index, the ethylene glycol raw material entered from charging aperture in whole or in part without the adsorption treatment of refined adsorbent bed,
Directly flowed out by the bypass for the inlet and outlet for connecting separate unit or more than two refined adsorbent beds from ethylene glycol product discharging opening.
Term " technological requirement in technical protocol " of the present invention refers to the pass for meeting that patent business proposes for adsorbent
In operating conditions such as adsorbent bed feeding temperature, feed pressure, liquid volume air speeds.
Term " its design service life " of the present invention refers to that the most long absorption on adsorbent that manufacturer provides makes
With the life-span, adsorption capacity of the service life by adsorbent producer according to different model adsorbent, it is supplied in technical protocol
User, common adsorbent service life are generally divided into three months, six months, 1 year etc..
The apparatus and method that physical absorption provided by the invention improves UV transmittance of ethylene glycol can refine adsorbent bed with flexible modulation
Operational mode, improve the utilization rate of refined adsorbent bed, the requirement to quality of ethylene glycol product can be met, and can makes full use of
Adsorbent in refined adsorbent bed, extends the usage time of adsorbent, reduces the cost of coal-ethylene glycol, increase economic efficiency.
Brief description of the drawings
Fig. 1 shows that the physical absorption of the present invention improves a kind of structural representation of embodiment of the device of UV transmittance of ethylene glycol
Figure.In figure, HC represents that device external belongs to hot insulation, and 1-20 is valve.
Embodiment
To make the present invention easier to understand, the present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings, these
Embodiment only serves illustrative, it is not limited to application of the invention.
The physical absorption for the present invention improves a kind of structure of specific embodiment of the device of UV transmittance of ethylene glycol as shown in Figure 1
Schematic diagram.
In this embodiment, the device includes refined adsorbent bed A and refined adsorbent bed B.Connected between adsorbent bed by pipeline
Connect, pipeline is provided with the valve for being used for controlling refined absorption bed operating, and separate unit can be achieved and refine adsorbent bed individually (for example, refined
Adsorbent bed A or refined adsorbent bed B) operation, two series connection (i.e. refined adsorbent bed A outlet entering to refined adsorbent bed B
Mouthful) operation or two parallel connections (i.e. ethylene glycol raw material enters refined adsorbent bed A and refined adsorbent bed B entrance simultaneously) run, together
When refined adsorbent bed between be provided with cross-line short circuit pipeline.The device also includes ethylene glycol material inlet, ethylene glycol product discharges
Mouth and sewage draining exit.In the present embodiment, the public sewage draining exit of adsorbent bed A and refined adsorbent bed B is refined.In addition, in the dress
The ethylene glycol material inlet and ethylene glycol product discharging opening put are equipped with quality inspection analytical sampling point (not shown), pass through matter
Examine the UV values that ethylene glycol is analyzed in the sampling cabinet (not shown) sampling that analytical sampling point is set in real time.
When separate unit refines adsorbent bed volume space velocity no more than the technological requirement in technical protocol, separate unit, which is refined in adsorbent bed, to be inhaled
Attached dose of not up to its design service life, and the quality of the ethylene glycol product from discharging opening outflow meets high-class product second two in national standard
During the UV value indexs of alcohol, any one refined adsorbent bed isolated operation or part in the refined adsorbent bed are by connecting separate unit
Or the bypass operation of the inlet and outlet of more than two refined adsorbent beds.If during refined adsorbent bed A isolated operations, open valve 4, valve
Door 5, valve 6, valve 7, valve 8, remaining valve are closed；If now need part by bypass run, simultaneously open valve 1,
Valve 2, valve 10, valve 9, and according to the quality adjustment bypass amount of discharging opening ethylene glycol product.If refined adsorbent bed B is individually transported
During row, valve 1, valve 3, valve 14, valve 15, valve 18, valve 19, valve 20, valve 11, valve 9, remaining valve are opened
Close；If now needing part to be run by bypassing, valve 2, valve 10 are opened simultaneously.
When separate unit refines adsorbent bed volume space velocity no more than the technological requirement in technical protocol, separate unit, which is refined in adsorbent bed, to be inhaled
Attached dose exceedes its design service life, or the quality of the ethylene glycol product from discharging opening outflow can not meet high-class product second in the world
During the UV value indexs of glycol, at least two refined adsorbent beds in the refined adsorbent bed are connected with being exported from a refined adsorbent bed
Pass to the series system operation of next refined adsorbent bed entrance.If adsorbent uses the longevity more than its design in refined adsorbent bed A
Life, or from the quality of ethylene glycol product of discharging opening outflow can not meet the UV value indexs of high-class product ethylene glycol in the world when, need
When running refined adsorbent bed B simultaneously, valve 4, valve 5, valve 12, valve 13, valve 18, valve 19, valve need to be opened simultaneously
20th, valve 11, valve 9, remaining valve are closed；If adsorbent exceedes its design service life in refined adsorbent bed B, or from discharging
When the quality of the ethylene glycol product of mouth outflow can not meet the UV value indexs of high-class product ethylene glycol in the world, it need to run simultaneously refined
During adsorbent bed A, valve 1, valve 3, valve 14, valve 15, valve 17, valve 16, valve 6, valve 7, valve need to be opened simultaneously
8, remaining valve is closed.
When separate unit, which refines adsorbent bed volume space velocity, exceedes the technological requirement in technical protocol, the refined adsorbent bed is with second
Diol starting materials enter the parallel way operation of at least two refined adsorbent bed entrances simultaneously.If refined adsorbent bed A and refined absorption
Bed B is run simultaneously when, valve 4, valve 5, valve 6, valve 7, valve 8, valve 1, valve 3, valve 14, valve need to be opened simultaneously
15th, valve 18, valve 19, valve 20, valve 11, valve 9, remaining valve are closed.
When the quality of the ethylene glycol raw material of charging aperture has reached the UV value indexs of high-class product ethylene glycol in national standard, it is described from
The ethylene glycol raw material that charging aperture enters is in whole or in part without the adsorption treatment of refined adsorbent bed, directly by connecting separate unit
Or the bypass of the inlet and outlet of more than two refined adsorbent beds is flowed out from ethylene glycol product discharging opening.If all without refined suction
During the adsorption treatment of attached bed, valve 1, valve 2, valve 10, valve 9 need to be opened simultaneously, and remaining valve is closed.
It should be noted that embodiment described above is only used for explaining the present invention, do not form to any of the present invention
Limitation.By referring to exemplary embodiments, invention has been described, it should be appreciated that word wherein used is descriptive
With explanatory vocabulary, rather than limited vocabulary.The present invention can be made within the scope of the claims by regulation
Modification, and the present invention is revised in without departing substantially from scope and spirit of the present invention.Although the present invention described in it relates to
And specific method, material and embodiment, it is not intended that the present invention is limited to wherein disclosed particular case, on the contrary, this hair
It is bright to can be extended to other all methods and applications with identical function.
Claims (10)
1. a kind of physical absorption improves the device of UV transmittance of ethylene glycol, it is characterised in that including at least two refined adsorbent beds；It is described
Connected between refined adsorbent bed by pipeline；The pipeline is provided with the valve for being used for controlling refined absorption bed operating.
2. device according to claim 1, it is characterised in that the operational mode between refined adsorbent bed in described device
Including any one refined adsorbent bed isolated operation, at least two refined adsorbent beds with from a refined adsorbent bed outlet to
The series system of next refined adsorbent bed entrance is run or entered simultaneously at least two refined adsorbent beds with ethylene glycol raw material
The parallel way operation of mouth.
3. device according to claim 1 or 2, it is characterised in that described device also includes ethylene glycol material inlet, second
Glycol outlet for product and sewage draining exit.
4. according to the device described in any one in claim 1-3, it is characterised in that the ethylene glycol material inlet and institute
State ethylene glycol product discharging opening and be equipped with quality inspection analytical sampling point, the quality of the ethylene glycol raw material and the ethylene glycol product
The sampling cabinet sampling analysis that quality is set by quality inspection analytical sampling point obtains.
5. any one described device carries out the method that physical absorption improves UV transmittance of ethylene glycol in a kind of 1-4 using claim,
Its ethylene glycol raw material for including from charging aperture to enter after refining the adsorption treatment of adsorbent bed through obtaining the second from discharging opening outflow
Glycol product.
6. according to the method for claim 5, it is characterised in that the quality of the ethylene glycol product from discharging opening outflow expires
The UV value indexs of high-class product ethylene glycol in sufficient national standard：220nm UV transmittance >=75%, 275nm UV transmittance >=
92%th, 350nm UV transmittance >=99%.
7. the method according to claim 5 or 6, it is characterised in that be no more than skill when separate unit refines adsorbent bed volume space velocity
Technological requirement in art agreement, separate unit refines adsorbent in adsorbent bed and is not up to its design service life, and is flowed out from discharging opening
The quality of ethylene glycol product when meeting the UV value indexs of high-class product ethylene glycol in national standard, it is any one in the refined adsorbent bed
Platform refines the bypass of adsorbent bed isolated operation or part by connecting the inlet and outlet of separate unit or more than two refined adsorbent beds and transported
OK.
8. according to the method described in any one in claim 5-7, it is characterised in that when separate unit refines adsorbent bed volume space velocity
No more than the technological requirement in technical protocol, separate unit refines adsorbent in adsorbent bed and exceedes its design service life, or from discharging
When the quality of the ethylene glycol product of mouth outflow can not meet the UV value indexs of high-class product ethylene glycol in the world, the refined adsorbent bed
In at least two refined adsorbent beds with the series connection from a refined adsorbent bed outlet to next refined adsorbent bed entrance
Mode is run.
9. according to the method described in any one in claim 5-8, it is characterised in that when separate unit refines adsorbent bed volume space velocity
During more than technological requirement in technical protocol, the refined adsorbent bed enters at least two refined absorption with ethylene glycol raw material simultaneously
The parallel way operation of bed entrance.
10. according to the method described in any one in claim 5-9, it is characterised in that when the ethylene glycol raw material of charging aperture
When quality has reached the UV value indexs of high-class product ethylene glycol in national standard, it is described from charging aperture enter ethylene glycol raw material all or
Partly without the adsorption treatment of refined adsorbent bed, the directly inlet and outlet by connecting separate unit or more than two refined adsorbent beds
Bypass from ethylene glycol product discharging opening flow out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737793.4A CN107774008A (en) | 2016-08-26 | 2016-08-26 | The apparatus and method that a kind of physical absorption improves UV transmittance of ethylene glycol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737793.4A CN107774008A (en) | 2016-08-26 | 2016-08-26 | The apparatus and method that a kind of physical absorption improves UV transmittance of ethylene glycol |
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| Publication Number | Publication Date |
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| CN107774008A true CN107774008A (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610737793.4A Pending CN107774008A (en) | 2016-08-26 | 2016-08-26 | The apparatus and method that a kind of physical absorption improves UV transmittance of ethylene glycol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115337671A (en) * | 2022-07-14 | 2022-11-15 | 陕西榆能化学材料有限公司 | Method for improving quality of coal-to-ethylene glycol product |
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| CN102649704A (en) * | 2011-02-25 | 2012-08-29 | 中国石油化工股份有限公司 | Method for purifying ethylene glycol product |
| CN102649692A (en) * | 2011-02-25 | 2012-08-29 | 中国石油化工股份有限公司 | Method for increasing quality of ethylene glycol |
| CN104418704A (en) * | 2013-08-27 | 2015-03-18 | 中国石油化工股份有限公司 | Method for refining glycol |
| CN104496752A (en) * | 2014-11-24 | 2015-04-08 | 中国石油化工股份有限公司 | Technology for raising UV transmittance of glycol device's by-product inferior crude glycol |
| CN104591962A (en) * | 2015-01-13 | 2015-05-06 | 内蒙古庆华集团有限公司 | Process and device for purifying feed methanol in gasoline production process through methanol conversion |
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2016
- 2016-08-26 CN CN201610737793.4A patent/CN107774008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649704A (en) * | 2011-02-25 | 2012-08-29 | 中国石油化工股份有限公司 | Method for purifying ethylene glycol product |
| CN102649692A (en) * | 2011-02-25 | 2012-08-29 | 中国石油化工股份有限公司 | Method for increasing quality of ethylene glycol |
| CN104418704A (en) * | 2013-08-27 | 2015-03-18 | 中国石油化工股份有限公司 | Method for refining glycol |
| CN104496752A (en) * | 2014-11-24 | 2015-04-08 | 中国石油化工股份有限公司 | Technology for raising UV transmittance of glycol device's by-product inferior crude glycol |
| CN104591962A (en) * | 2015-01-13 | 2015-05-06 | 内蒙古庆华集团有限公司 | Process and device for purifying feed methanol in gasoline production process through methanol conversion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115337671A (en) * | 2022-07-14 | 2022-11-15 | 陕西榆能化学材料有限公司 | Method for improving quality of coal-to-ethylene glycol product |
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