CN106281525A - A kind of desulfurizer of liquefied petroleum gas - Google Patents
A kind of desulfurizer of liquefied petroleum gas Download PDFInfo
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- CN106281525A CN106281525A CN201510296930.0A CN201510296930A CN106281525A CN 106281525 A CN106281525 A CN 106281525A CN 201510296930 A CN201510296930 A CN 201510296930A CN 106281525 A CN106281525 A CN 106281525A
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- petroleum gas
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- cartridge filter
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Abstract
The invention discloses the desulfurizer of a kind of liquefied petroleum gas, including desulfurization cylinder, desulfurization cylinder is provided with cartridge filter, and cartridge filter stretches in desulfurization cylinder, being provided with annular first filter membrane in cartridge filter, the central axis of annular first filter membrane is arranged with the central axis coaxial of cartridge filter；The cartridge filter being positioned at desulfurization cylinder is provided with the second filter membrane；Cartridge filter is positioned at that desulfurization cylinder is outside upper is provided with liquefied petroleum gas air inlet pipe, liquefied petroleum gas water inlet pipe is provided with valve body, liquefied petroleum gas water inlet pipe stretches in annular first filter membrane, and cartridge filter is positioned at desulfurization cylinder and is provided with liquefied petroleum gas escape pipe, and liquefied petroleum gas escape pipe stretches out outside desulfurization cylinder.Environmental protection of the present invention, removal of mercaptans produces alkaline residue and secondary pollution completely and not, and production cost is low, can obtain few sulfur or the liquefied petroleum gas without sulfur.
Description
Technical field
The present invention relates to Removal of sulfur compounds from LPG field, the desulfurization dress of a kind of liquefied petroleum gas
Put.
Background technology
Adjust it is known that MTBE (methyl tertiary butyl ether(MTBE)) is non-hydrocarbons high-octane rating maximum in China's gasoline
Charge-coupled point, it is possible to significantly improve quality of gasoline.But, under existing working condition, the MTBE of output
In substantially containing sulfide, generally sulfur content reaches 60～300mg/kg, part manufacturer production
Sulfur content in MTBE is the most more up to 2000mg/kg.
Finding in research, in the building-up process of MTBE, the partial vulcanization thing in liquefied petroleum gas is converted into
Sulfide in MTBE, but owing to the requirement of liquefied petroleum gas sulfur content is basically unchanged, cause in factory
The change of the sulfur removal technology of middle liquefied petroleum gas, operating condition is little so that the sulfur of the liquefied petroleum gas of production
Content is qualified, but is generally sulfur content in liquefied petroleum gas by the sulfur content of this liquefied petroleum gas production MTBE
2～3 times, such as sulfur content 200mg/m3The liquefied petroleum gas of (being approximately corresponding to 80mg/kg) after edema caused by disorder of QI,
Sulfur content in C4 is about 400mg/m3(being approximately corresponding to 180mg/kg), the sulfur content in the MTBE of production is about
For 400mg/kg.
Liquefied petroleum gas is after hydramine eluting is except most hydrogen sulfide at present, then removes liquefied petroleum gas
In inorganic sulfur and organic sulfur, or by organic sulfur conversion.Common feature is both for liquefied petroleum gas
Itself uses conventional desulfuration processing method, all mercaptan has been carried out simple oxidation process.But actually exist
It is hidden that liquefied petroleum gas factory uses peroxide to have the biggest safety as the source of oxidant or oxygen
Suffer from, and be distillate liquefied oil gas again after disulphide by the mercaptan oxidation in liquefied petroleum gas, need
Liquefied petroleum gas is gasified the most again, it is ensured that being completely separated of the disulphide at the bottom of tower, operation
Energy consumption is the highest, but also is again introduced into the liquid steamed after there is disulphide or polysulfide decomposed
Problem in liquefied oil gas.
Existing LPG Desulfurization technique has encountered bottleneck: be reduced to a certain degree in sulfur content
After, no matter using great cost, sulfur content no longer reduces or improvement amplitude is the least, consumes the most in vain
Resource at double: many feeder apparatus, many used additives, consume a large amount of alkali liquor and amine liquid, significantly increases simultaneously
The environmental protection treatment pressure of alkaline sewage.
Finding under study for action, liquefied petroleum gas is from the beginning of contact hydramine, and just having part mercaptan oxidation is curing
Thing and polysulfide, oxidant therein is to come from the dissolved oxygen in hydramine and the micro-oxidation in hydramine
Property material.The disulphide or the polysulfide that generate can not be removed by follow-up (alkali liquor), and liquefy stone
These disulphide in oil gas or polysulfide are by " permanent resident " wherein；When these are dissolved in
When sulfide in liquefied petroleum gas runs into strongly acidic cation-exchange, part meeting and isobutene reaction
Producing high boiling thioether, the thioether of generation residues in MTBE as high boiling polysulfide, almost
Become whole contributors of MTBE sulfur content.
Summary of the invention
It is an object of the invention to provide the desulfurizer of a kind of liquefied petroleum gas, to solve above-mentioned background skill
The problem proposed in art.
For achieving the above object, the present invention provides following technical scheme:
The desulfurizer of a kind of liquefied petroleum gas, including desulfurization cylinder, desulfurization cylinder is provided with cartridge filter, cartridge filter
Stretch in desulfurization cylinder, in cartridge filter, be provided with annular first filter membrane, the central shaft of annular first filter membrane
Line is arranged with the central axis coaxial of cartridge filter；The cartridge filter being positioned at desulfurization cylinder is provided with the second filtration
Film；Cartridge filter is positioned at the outside upper liquefied petroleum gas air inlet pipe that is provided with of desulfurization cylinder, and liquefied petroleum gas water inlet pipe sets
Having valve body, liquefied petroleum gas water inlet pipe to stretch in annular first filter membrane, cartridge filter is positioned on desulfurization cylinder
Being provided with liquefied petroleum gas escape pipe, liquefied petroleum gas escape pipe stretches out outside desulfurization cylinder；
It is provided with 75 DEG C, first water-bath of-0.05MPa to-0.03MPa in cartridge filter, enters the liquid in cartridge filter
Liquefied oil gas adsorbs inorganic sulfur under the effect of the first filter membrane, and the first filter membrane is molecular sieve inoranic membrane；
It is provided with 75 DEG C, second water-bath of-0.09MPa to-0.08MPa in desulfurization cylinder, filters through annular first
Adsorbing organic sulfur under the second filter membrane effect on cartridge filter of the liquefied petroleum gas of film, the second filter membrane is
Ultrafilter membrane；
Its raw material of ultrafilter membrane includes following components by weight: polrvinyl chloride 40-60 part, polyvinyl alcohol contract
Butyraldehyde 20-35 part, Kynoar 10-25 part, Polyethylene Glycol 2-8 part, nano titanium oxide 1-5
Part, nano silicon 0.3-1 part, graphene oxide 2-5 part, N, N '-dimethyl acetylamide 20-35
Part, DAA 3-10 part, alkylolamides polyethylene oxide ether 3-6 part, n-butyl acetate 5-10
Part, trimethyl phosphate 5-12 part, Ketohexamethylene 12-20 part, glycol ether ester 2-4 part, glycol ether
2-5 part.
As the present invention further technical scheme, in the middle part of annular first filter membrane, it is provided with filter element, filter element
Material is identical with the first filter membrane material.
As the present invention further technical scheme, its raw material of ultrafilter membrane includes following components by weight:
Polrvinyl chloride 43-56 part, polyvinyl butyral resin 23-30 part, Kynoar 16-22 part, poly-second
Glycol 4-8 part, nano titanium oxide 3-5 part, nano silicon 0.5-0.8 part, graphene oxide
3-4.5 part, N, N '-dimethyl acetylamide 26-33 part, DAA 6-9 part, alkylolamides polyoxy
Ethane ether 4-5.6 part, n-butyl acetate 7-9 part, trimethyl phosphate 7-10 part, Ketohexamethylene 15-20
Part, glycol ether ester 3-3.4 part, glycol ether 3-3.8 part.
As the present invention further technical scheme, its raw material of ultrafilter membrane includes following components by weight:
Polrvinyl chloride 50 parts, polyvinyl butyral resin 27 parts, Kynoar 18 parts, Polyethylene Glycol 5 parts, nanometer
Titanium dioxide 4.3 parts, nano silicon 0.7 part, graphene oxide 4 parts, N, N '-dimethyl acetylamide
32 parts, DAA 8 parts, 5 parts of alkylolamides polyethylene oxide ether, n-butyl acetate 7.6 parts, front three
Base phosphate ester 8.3 parts, Ketohexamethylene 16 parts, glycol ether ester 3.2 parts, glycol ether 3.5 parts.
The desulfurizer of a kind of liquefied petroleum gas that the present invention provides, is provided with 75 DEG C ,-0.05MPa in cartridge filter
To first water-bath of-0.03MPa, enter the liquefied petroleum gas in cartridge filter under the effect of the first filter membrane
Absorption inorganic sulfur, the first filter membrane is molecular sieve inoranic membrane；In order to strengthen nothing in liquefied petroleum gas further
Machine removal of sulphur degree, is provided with filter element, filter element material and the first filter membrane material in the middle part of annular first filter membrane
Matter is identical.75 DEG C ,-0.09MPa to second water-bath of-0.08MPa it is provided with, through annular the in desulfurization cylinder
Organic sulfur, the second mistake is adsorbed under the second filter membrane effect on cartridge filter of the liquefied petroleum gas of one filter membrane
Filter membrane is ultrafilter membrane.In its ultrafilter membrane, have selected polrvinyl chloride, polyvinyl butyral resin, polyvinylidene fluoride
Alkene, Polyethylene Glycol cooperate as film forming matter, and have adjusted the ratio of four, make the property of each raw material
Collaborative can promote, improve surface hydrophilicity and the internal structure of ultrafilter membrane, the film improving ultrafilter membrane leads to
Amount, porosity, current-carrying capacity, improve resistance to water and the stain resistance of ultrafilter membrane；Nano titanium oxide,
The cooperation of nano silicon, graphene oxide joins in system, the good dispersion in system, a side
Face improves ultrafiltration film strength and hardness, on the one hand, nano material can enter in organic seam,
Improving the resistance to water of ultrafilter membrane, the most each filler cooperates, and improves the resistance to ultraviolet of ultrafilter membrane
Linearly energy, improves the durability of ultrafilter membrane；Add N, N '-dimethyl acetylamide, DAA,
Alkylolamides polyethylene oxide ether, n-butyl acetate, trimethyl phosphate, Ketohexamethylene, glycol ether
Ester, glycol ether cooperate, and control its content, improve the compatibility of each material, simultaneously its
Evaporation rate is moderate, and the ultrafilter membrane film forming speed obtained is fast, Stability Analysis of Structures, is difficult to during using
Deformation, good combination property.Environmental protection of the present invention, removal of mercaptans produces alkaline residue and secondary pollution completely and not,
Production cost is low, can obtain few sulfur or the liquefied petroleum gas without sulfur.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the desulfurizer of a kind of liquefied petroleum gas that the present invention proposes.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Refer to Fig. 1, the desulfurizer of a kind of liquefied petroleum gas, including desulfurization cylinder 1, desulfurization cylinder 1 sets
There are cartridge filter 2, cartridge filter 2 to stretch in desulfurization cylinder 1, in cartridge filter 2, are provided with annular first filter membrane
21, the central axis of annular first filter membrane 20 is arranged with the central axis coaxial of cartridge filter 2；It is being positioned at
Cartridge filter 2 in desulfurization cylinder 1 is provided with the second filter membrane 22；Cartridge filter 2 is positioned at that desulfurization cylinder 1 is outside upper to be set
Having liquefied petroleum gas air inlet pipe 31, liquefied petroleum gas water inlet pipe 31 to be provided with valve body, liquefied petroleum gas is intake
Pipe 31 stretches in annular first filter membrane 21, and cartridge filter 2 is positioned at desulfurization cylinder 1 and is provided with liquefied petroleum
Gas escape pipe 32, liquefied petroleum gas escape pipe 32 stretches out outside desulfurization cylinder 1.
It is provided with 75 DEG C, first water-bath of-0.05MPa to-0.03MPa in cartridge filter 2, enters in cartridge filter 2
Liquefied petroleum gas adsorbs inorganic sulfur under the effect of the first filter membrane 21, the first filter membrane 21 be molecular sieve without
Machine film；Degree is removed, in annular first filter membrane in order to strengthen inorganic sulfur in liquefied petroleum gas further
Portion is provided with filter element, and filter element material is identical with the first filter membrane material.
75 DEG C, second water-bath of-0.09MPa to-0.08MPa it is provided with, through annular first mistake in desulfurization cylinder 1
The liquefied petroleum gas of filter membrane 21 adsorbs organic sulfur, the second mistake under the second filter membrane 22 effect on cartridge filter 2
Filter membrane 22 is ultrafilter membrane.
Embodiment 1
Its raw material of ultrafilter membrane includes following components by weight: polrvinyl chloride 40 parts, polyvinyl butyral resin
20 parts, Kynoar 10 parts, Polyethylene Glycol 2 parts, nano titanium oxide 1 part, nano silicon
0.3 part, graphene oxide 2 parts, N, N '-dimethyl acetylamide 20 parts, DAA 3 parts, alkyl
3 parts of alkylolamides polyethylene oxide ether, n-butyl acetate 5 parts, trimethyl phosphate 5 parts, Ketohexamethylene 12
Part, glycol ether ester 2 parts, glycol ether 2 parts.
Embodiment 2
Its raw material of ultrafilter membrane includes following components by weight: polrvinyl chloride 60 parts, polyvinyl butyral resin
35 parts, Kynoar 25 parts, Polyethylene Glycol 8 parts, nano titanium oxide 5 parts, nano silicon
1 part, graphene oxide 5 parts, N, N '-dimethyl acetylamide 35 parts, DAA 10 parts, alkylol
6 parts of amide polyethylene oxide ether, n-butyl acetate 10 parts, trimethyl phosphate 12 parts, Ketohexamethylene 20
Part, glycol ether ester 4 parts, glycol ether 5 parts.
Embodiment 3
Its raw material of ultrafilter membrane includes following components by weight: polrvinyl chloride 50 parts, polyvinyl butyral resin
27 parts, Kynoar 18 parts, Polyethylene Glycol 5 parts, nano titanium oxide 4.3 parts, nanometer titanium dioxide
Silicon 0.7 part, graphene oxide 4 parts, N, N '-dimethyl acetylamide 32 parts, DAA 8 parts, alkane
5 parts of base alkylolamides polyethylene oxide ether, n-butyl acetate 7.6 parts, trimethyl phosphate 8.3 parts, ring
Hexanone 16 parts, glycol ether ester 3.2 parts, glycol ether 3.5 parts.
The desulfurizer of a kind of liquefied petroleum gas that the present invention provides, is provided with 75 DEG C ,-0.05MPa in cartridge filter
To first water-bath of-0.03MPa, enter the liquefied petroleum gas in cartridge filter under the effect of the first filter membrane
Absorption inorganic sulfur, the first filter membrane is molecular sieve inoranic membrane；In order to strengthen nothing in liquefied petroleum gas further
Machine removal of sulphur degree, is provided with filter element, filter element material and the first filter membrane material in the middle part of annular first filter membrane
Matter is identical.75 DEG C ,-0.09MPa to second water-bath of-0.08MPa it is provided with, through annular the in desulfurization cylinder
Organic sulfur, the second mistake is adsorbed under the second filter membrane effect on cartridge filter of the liquefied petroleum gas of one filter membrane
Filter membrane is ultrafilter membrane.Environmental protection of the present invention, removal of mercaptans produces alkaline residue and secondary pollution completely and not, raw
Produce low cost, few sulfur or the liquefied petroleum gas without sulfur can be obtained.
Claims (4)
1. the desulfurizer of a liquefied petroleum gas, it is characterised in that include desulfurization cylinder (1), desulfurization
Cylinder (1) is provided with cartridge filter (2), and cartridge filter (2) stretches in desulfurization cylinder (1), in cartridge filter (2)
Inside it is provided with annular first filter membrane (21), the central axis of annular first filter membrane (20) and cartridge filter
(2) central axis coaxial is arranged；The cartridge filter (2) be positioned at desulfurization cylinder (1) is provided with second
Filter membrane (22)；Cartridge filter (2) is positioned at that desulfurization cylinder (1) is outside upper is provided with liquefied petroleum gas air inlet pipe (31),
Liquefied petroleum gas water inlet pipe (31) is provided with valve body, and liquefied petroleum gas water inlet pipe (31) stretches into annular the
In one filter membrane (21), cartridge filter (2) is positioned at desulfurization cylinder (1) and is provided with liquefied petroleum gas and gives vent to anger
Pipe (32), liquefied petroleum gas escape pipe (32) stretches out desulfurization cylinder (1) outward；
It is provided with 75 DEG C, first water-bath of-0.05MPa to-0.03MPa in cartridge filter (2), enters cartridge filter
(2) liquefied petroleum gas in adsorbs inorganic sulfur under the effect of the first filter membrane (21), the first filter membrane
(21) it is molecular sieve inoranic membrane；
75 DEG C ,-0.09MPa to second water-bath of-0.08MPa it is provided with, through annular the in desulfurization cylinder (1)
The liquefied petroleum gas of one filter membrane (21) is inhaled under the second filter membrane (22) effect on cartridge filter (2)
Attached organic sulfur, the second filter membrane (22) is ultrafilter membrane；
Its raw material of ultrafilter membrane includes following components by weight: polrvinyl chloride 40-60 part, polyvinyl alcohol contract
Butyraldehyde 20-35 part, Kynoar 10-25 part, Polyethylene Glycol 2-8 part, nano titanium oxide 1-5
Part, nano silicon 0.3-1 part, graphene oxide 2-5 part, N, N '-dimethyl acetylamide 20-35
Part, DAA 3-10 part, alkylolamides polyethylene oxide ether 3-6 part, n-butyl acetate 5-10
Part, trimethyl phosphate 5-12 part, Ketohexamethylene 12-20 part, glycol ether ester 2-4 part, glycol ether
2-5 part.
The desulfurizer of liquefied petroleum gas the most according to claim 1, it is characterised in that in annular the
One filter membrane (21) middle part is provided with filter element (23), filter element (22) material and the first filter membrane (21)
Material is identical.
The desulfurizer of liquefied petroleum gas the most according to claim 1, it is characterised in that ultrafilter membrane
Its raw material includes following components by weight: polrvinyl chloride 43-56 part, polyvinyl butyral resin 23-30
Part, Kynoar 16-22 part, Polyethylene Glycol 4-8 part, nano titanium oxide 3-5 part, nanometer two
Silicon oxide 0.5-0.8 part, graphene oxide 3-4.5 part, N, N '-dimethyl acetylamide 26-33 part,
DAA 6-9 part, alkylolamides polyethylene oxide ether 4-5.6 part, n-butyl acetate 7-9 part,
Trimethyl phosphate 7-10 part, Ketohexamethylene 15-20 part, glycol ether ester 3-3.4 part, glycol ether 3-3.8
Part.
The desulfurizer of liquefied petroleum gas the most according to claim 3, it is characterised in that ultrafilter membrane
Its raw material includes following components by weight: polrvinyl chloride 50 parts, polyvinyl butyral resin 27 parts, poly-
Vinylidene 18 parts, Polyethylene Glycol 5 parts, nano titanium oxide 4.3 parts, nano silicon 0.7 part,
Graphene oxide 4 parts, N, N '-dimethyl acetylamide 32 parts, DAA 8 parts, alkylolamides are poly-
5 parts of oxidative ethane ether, n-butyl acetate 7.6 parts, trimethyl phosphate 8.3 parts, Ketohexamethylene 16 parts,
Glycol ether ester 3.2 parts, glycol ether 3.5 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296930.0A CN106281525A (en) | 2015-05-28 | 2015-05-28 | A kind of desulfurizer of liquefied petroleum gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296930.0A CN106281525A (en) | 2015-05-28 | 2015-05-28 | A kind of desulfurizer of liquefied petroleum gas |
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| Publication Number | Publication Date |
|---|---|
| CN106281525A true CN106281525A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510296930.0A Pending CN106281525A (en) | 2015-05-28 | 2015-05-28 | A kind of desulfurizer of liquefied petroleum gas |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202638215U (en) * | 2012-06-15 | 2013-01-02 | 无锡翱翔环保机械有限公司 | Compartment type desulfurizing structure |
| CN204017643U (en) * | 2014-08-16 | 2014-12-17 | 杭州蓝星环保设备有限公司 | A kind of flue gas desulfurization water storing tank |
| CN104371786A (en) * | 2013-08-14 | 2015-02-25 | 中国石油化工股份有限公司 | Alkali lye desulfurization method and device of liquefied petroleum gas |
-
2015
- 2015-05-28 CN CN201510296930.0A patent/CN106281525A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202638215U (en) * | 2012-06-15 | 2013-01-02 | 无锡翱翔环保机械有限公司 | Compartment type desulfurizing structure |
| CN104371786A (en) * | 2013-08-14 | 2015-02-25 | 中国石油化工股份有限公司 | Alkali lye desulfurization method and device of liquefied petroleum gas |
| CN204017643U (en) * | 2014-08-16 | 2014-12-17 | 杭州蓝星环保设备有限公司 | A kind of flue gas desulfurization water storing tank |
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