CN207046135U - A kind of device for storing liquid for preventing chemicals volatile emission - Google Patents
A kind of device for storing liquid for preventing chemicals volatile emission Download PDFInfo
- Publication number
- CN207046135U CN207046135U CN201621268797.4U CN201621268797U CN207046135U CN 207046135 U CN207046135 U CN 207046135U CN 201621268797 U CN201621268797 U CN 201621268797U CN 207046135 U CN207046135 U CN 207046135U
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- flexible inner
- container
- liquid
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 239000000126 substance Substances 0.000 title claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 229920000344 molecularly imprinted polymer Polymers 0.000 claims 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000012855 volatile organic compound Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 2
- 239000005033 polyvinylidene chloride Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A flexible inner cylinder is set in the container content of storage liquid chemical, flexible inner cylinder bottom seal, open top, sealing is fixed on the top or top of the container at the top of flexible inner cylinder, make to form a closed liquid storage space between flexible inner cylinder and container inner wall, liquid chemical is in and out of between container inner wall and flexible inner cylinder, and flexible inner cylinder freely stretches with the change of institute's tank body volume；Diameter or girth when flexible inner cylinder is fully extended on its arbitrary cross section is not less than the internal diameter or girth at the container same location；The material for preparing flexible inner cylinder is the film of high molecular polymer.Device for storing liquid provided by the utility model can effectively prevent chemicals volatile emission, avoid pollutions of the VOCs to atmospheric environment.
Description
Technical field
A kind of device of chemical storage is the utility model is related to, particularly relating to one kind prevents chemicals from storing
The equipment volatilized in journey, belong to petrochemical industry equipment field.
Background technology
There are many big and small containers in chemical plant, for storing various chemicals.These containers are generally normal pressure
Container, during chemicals is stored, for the pressure balance in holding container, often it is designed with breather valve and connects with air
It is logical.When liquid volume changes in container, gas can be sucked or discharged by breather valve.Due to the relation of material vapour pressure,
The harmful chemicals not waited containing concentration inevitably in the gas of discharge.Thus cause seriously to pollute to atmospheric environment,
The loss of chemicals is caused simultaneously.The principal element that liquid volume changes in container is caused there are two：One is due to technique behaviour
The change for the liquid volume that the needs of work are brought, second, liquid caused by atmospheric temperature change expands with heat and contract with cold and caused change
Change.In general, the volume of container (some industries are referred to as storage tank) is bigger, chemicals saturated vapour pressure is higher, liquid level ripple
The dynamic frequency is more, and the chemical volume breathed out to air is bigger.
Because chemical kind is various, the container for storing these chemicals disperses, and the gas of exhalation is difficult to unified collection etc.
Factor, administered to air and bring very big difficulty.Although developing many targetedly technologies at present to be tackled, such as inhale
Attached method, absorption process, burning method etc., but these technologies are all post-processings, and applicable surface is narrow, investment for trnasforming urban land is big, is not easy large area and pushes away
It is wide to use.The example for comparing successful application is to use internal floating roof tank, and the discharge of chemicals, but its can be effectively controlled from source
Complicated, cost is high, the problems such as dynamic sealing leakage between inner floating roof and tank skin also be present, nor be adapted to chemicals life
The transformation of surge tank during production.
The content of the invention
The purpose of this utility model is to provide a kind of storage simple in construction, cheap, can effectively preventing chemicals volatile emission
Liquid device.
The utility model is accomplished in the following manner：
A flexible inner cylinder is set in the container content of storage liquid chemical, and flexible inner cylinder bottom seal, open top is soft
Property inner cylinder at the top of sealing be fixed on the top or top of the container, make to be formed between flexible inner cylinder and container inner wall one it is closed
Liquid storage space, liquid chemical is in and out of between container inner wall and flexible inner cylinder, flexible inner cylinder with institute's tank body volume change
Change is freely stretched；Diameter or girth when flexible inner cylinder is fully extended on its arbitrary cross section are not less than the same position of the container
Put the internal diameter or girth at place；Prepare flexible inner cylinder material be high molecular polymer film, film thickness preferably 0.01~0.3
Millimeter.
Using container of the present utility model, because flexible inner cylinder can arbitrarily stretch so that flexible inner cylinder and container inner wall
Between the volume of memory space can freely change within the specific limits.So when liquid volume changes in container, container
Atmospheric pressure state is inside in all the time, in the absence of the situation of outside discharge of noxious gases, with existing by setting breather valve to maintain storage tank
Container in atmospheric pressure state is compared, and fundamentally solves atmospheric storage tank VOCs emission problems.
Brief description of the drawings
Accompanying drawing 1 is a kind of structural representation of device for storing liquid of the present utility model.
Symbol description is as follows：
1- containers, 2- flexibility inner cylinders,
Po- atmospheric pressure；Pressure on P- liquid levels
The highest liquid level of LHH- containers, the minimum liquid level of L- containers
D- insides diameter of vessel, Do- inner diameter of steel flue
A1- liquid inlet openings, A2- liquid outlet openings, A3- exhaust outlets
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, but the utility model is not limited thereby.
Accompanying drawing 1 is the structural representation of device for storing liquid of the present utility model.The utility model, it is in storage liquid chemical
Container 1 in installing one high molecular polymer film made of flexible inner cylinder 2, flexible inner cylinder bottom seal, open top, top
Portion's sealing is fixed on the container highest liquid level LHH, and the liquid storage of a closing is formed between flexible inner cylinder and container inner wall
SPACE V L, liquid chemical are in and out of the liquid storage SPACE V L of closing, when in VL liquid level raise when, flexible inner cylinder bottom by
The impetus of liquid, freely roll into a ball contracting upwards, when liquid is reduced in VL, the effect of inner cylinder then pressure difference (Po-P), downwards and
Surrounding stretches, and is rapidly reached balance (Po-P=0).
According to the utility model, diameter or girth when flexible inner cylinder is fully extended on its arbitrary cross section are not less than institute
The internal diameter or girth at container same location are stated, i.e. Do is not less than D, and this is to form key of the present utility model.The mesh so done
Be when flexible inner cylinder is radially extending, it is ensured that inner cylinder film is affixed on the inwall of container, so as to avoid film and tank body by
The effect of inside and outside differential pressure and deform or damage.In general, it is suitable Do-D to be controlled at 0~0.5 meter.
According to the utility model, its bottommost is not higher than the minimum liquid level (L) of container when flexible inner cylinder is fully extended, excellent
Its bottommost is selected to be not higher than the discharging opening (A2) of container.It is the purpose for the arrangement is that flexible when ensureing low liquid level or even aneroid bit manipulation
Inner cylinder bottom can freely stretch, and avoid film and tank body from being damaged by the effect of inside and outside differential pressure.
According to method of the present utility model, obvious force-extension situation is not present in flexible inner cylinder in container, therefore right
The tensile strength for preparing the high molecular polymer film of flexible inner cylinder does not require that general commercially available film can expire particularly
Foot requires.This kind of high molecular polymer film species is a lot, such as by polythene PE, polypropylene PP, polyvinylchloride, polyphenyl second
Alkene OPS, nylon PA, polyethylene terephtalate, PVAC polyvinylalcohol, ethylene-vinyl alcohol copolymer EVOH, acrylonitrile
Birds of the same feather flock together compound PAN, metachloroethylene copolymer PVDC, special nylon, PEN PEN, polytetrafluoroethylene (PTFE), neoprene
Film that rubber, natural rubber, butyl, butyronitrile etc. are made etc..In addition, there are much changing based on above-mentioned polymer
Property film, as PVA coat films, PVDC coat films, metallized film, plating silicon thin film, water-fast modified PVA film, EVOH PP TYPEs
Etc..Because chemical kind is various, nature difference is very big, cylinder material in selection flexibility, following principle need to be followed, first, film
There is good barrier to stored up chemicals, that is, stored up chemicals can not pass through film；It is second, not rotten by stored chemicals
Erosion, dissolving or swelling；Third, the temperature under tolerance storage condition, fourth, easy to process.On the thickness of film, to be easy to flexible
Fold, cheap be principle, and suitable film thickness is 0.01 millimeter to 1 millimeter, preferably 0.01 to 0.5 millimeter, more preferably
0.01 to 0.3 millimeter.
According to method of the present utility model, flexible inner cylinder can be made up of plural layers, and difference can be used per layer film
Macromolecule polymer material, benefit are that barrier is higher, can also play multilayer protective effect, when certain layer because fortuitous event occurs
When damaged, other layers still can ensure that chemicals does not volatilize to air.The number of plies is more in theory, and safety coefficient is bigger, but mistake
Multilayer can occupy more liquid storage spaces, also increase cost, preferably 1 to 10 layers, more preferably 1 to 5 layers.
The container is fixed on according to the utility model, flexible inner cylinder bottom seal, open top, the sealing of inner cylinder top most
Optional position on high level LHH, it can seal and be fixed on inside container, the manhole for being fixed on container top can also be sealed
On, a dust cover is at this moment added preferably above manhole.Sealing fixed form has diversified forms, and simplest mode is to tie up, this
Utility model is not specially limited to this.
The container refers to the storage tank that liquid is stored made of metal or engineering plastics, can be spherical storage tank, vertical
Flat flat-top storage tank, vertical flat-bottom pinnacle storage tank, vertical elliptical end socket storage tank etc., liquid level gauge mouth, exhaust outlet etc. can be set on tank and is set
Apply, the utility model is not particularly limited to this.Setting on inlet and liquid outlet is quantitatively arbitrary, can be also total to
With a mouth, liquid in-out mouth is preferably provided at container bottom, and when being arranged on container top, preferably bottom insert canal presses close to the device of container
Wall cloth is put.
, it is necessary to the gas between inner cylinder and container be emptied, suitable purging method such as exhaust liquid method before liquid is stored,
Vacuum suction method etc., the utility model is not particularly limited.
According to device for storing liquid of the present utility model, saturated vapour pressure of the stored chemicals under storage temperature should be less than
100KPa。
Although the utility model is described and illustrated by reference to specific embodiment, the technology of this area
Personnel will recognize that the utility model is applied to different versions, and they need not be explained herein.Therefore, it is
Determination true scope of the present utility model, it should uniquely with reference to appended claim.
Claims (3)
1. a kind of device for storing liquid for preventing chemicals volatile emission, it is characterized in that：
A flexible inner cylinder is set in the container content of storage liquid chemical, flexible inner cylinder bottom seal, open top, in flexibility
The sealing of cylinder top is fixed on the top or top of the container, makes to form a closed storage between flexible inner cylinder and container inner wall
Liquid space, liquid chemical are in and out of between container inner wall and flexible inner cylinder, flexible inner cylinder with institute's tank body volume change from
By stretching；Diameter or girth when flexible inner cylinder is fully extended on its arbitrary cross section is not less than at the container same location
Internal diameter or girth；The material for preparing flexible inner cylinder is the film of high molecular polymer, and the thickness of film is 0.01~0.3 milli
Rice.
2. device for storing liquid according to claim 1, it is characterised in that the flexible inner cylinder is by 1~5 floor height Molecularly Imprinted Polymer
Film form.
3. device for storing liquid according to claim 1, it is characterised in that when flexible inner cylinder is fully extended, flexible inner cylinder
Bottommost be not higher than container liquid outlet opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268797.4U CN207046135U (en) | 2016-11-25 | 2016-11-25 | A kind of device for storing liquid for preventing chemicals volatile emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268797.4U CN207046135U (en) | 2016-11-25 | 2016-11-25 | A kind of device for storing liquid for preventing chemicals volatile emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207046135U true CN207046135U (en) | 2018-02-27 |
Family
ID=61488294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621268797.4U Expired - Fee Related CN207046135U (en) | 2016-11-25 | 2016-11-25 | A kind of device for storing liquid for preventing chemicals volatile emission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207046135U (en) |
-
2016
- 2016-11-25 CN CN201621268797.4U patent/CN207046135U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 |