CN105779000B - A kind of preparation method of soap wax - Google Patents
A kind of preparation method of soap wax Download PDFInfo
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- CN105779000B CN105779000B CN201410786236.2A CN201410786236A CN105779000B CN 105779000 B CN105779000 B CN 105779000B CN 201410786236 A CN201410786236 A CN 201410786236A CN 105779000 B CN105779000 B CN 105779000B
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Abstract
The invention discloses a kind of preparation method of soap wax.This method is uniformly paved with solid particle before the sweating effort that heats up on wax layer surface, and forces air flow through wax layer in the sweating effort that heats up, and carries out the oil in liquid, accelerates the separating rate of wax and oil, and enhances the separating effect of wax and oil.For the present invention on the basis of common sweating de-oiling method, the process of wax and oil separation is forced in increase, so as to improve purpose product yield, and can shorten the production cycle.The inventive method has the advantages that investment of production equipment is low, production process is simple and operating cost is low, solvent-free pollution.
Description
Technical field
The invention belongs to pertroleum wax production technical field, more particularly to a kind of preparation method of soap wax.
Background technology
The general name of the pertroleum wax obtained all kinds of wax products that are crude oil after refining is processed from wax-containing distillate, including liquid
Body paraffin, soap wax, paraffin and microwax.Soap wax is that lube cut is given birth to through steps such as dewaxing, de-oiling, refined and shapings in crude oil
Production, the components such as n-alkane, a small amount of isoparaffin and cycloalkane are typically contained, fusing point is 40 DEG C~52 DEG C.
Dewaxing is that the process for the slack wax that oil content is 10~30% or so, dewaxing technique are prepared by raw material of lube cut
Mainly there are squeezing dewaxing and solvent dewaxing.De-oiling is that the process of waxy stone of the oil content below 2%, de-oiling are prepared using slack wax as raw material
Technique mainly has sweating de-oiling and solvent deoiling.Waxy stone through clay-filtered or hydrofinishing and shaping, packaging and other steps, both may be used again
Obtain commodity oil wax.
Solvent deoiling method is in selective solvent（Acetone, benzene and toluene mixture；Or acetone, toluene；Or MEK,
Toluene）Solution in freeze, wax is separated with oily according to the property of wax and oil different solubility in selective solvent.
Solvent deoiling technique have production process is continuous, wax high income, finished product wax oil content can it is very low, production cost is more low excellent
Point, it is the main flow de-oiling technique of current large-scale production petroleum paraffin product.But solvent deoiling technique productions equipment investment is big；Production
During need largely to use solvent（Every part of waxy stone uses 3~10 parts of solvent）, recycling design needs to consume substantial amounts of energy；
Contain benzene homologues in solvent, environment can be impacted；Solvent is inflammable, easily causes production accident.
Sweating de-oiling method is separated using the wax property different with oily fusing point.Point of various components in pertroleum wax
Son amount Bu Tong can all make its fusing point different with structure.When being all n-alkane structure, the larger n-alkane of molecular weight melts
Point is higher, and the fusing point of the less n-alkane of molecular weight is relatively low；When molecular weight is identical, the fusing point of isoparaffin and cycloalkane will
Less than n-alkane, and isomery degree more high-melting-point is lower, or even is just at normal temperatures liquid condition, i.e., usually said
Oil.Sweating de-oiling method only needed in process of production without using solvent, and in production process by raw material be heated to fusing point with
On temperature.
Common sweating degreasing process mainly includes the following steps that：（1）Preparation：Water is padded, is full of sweatbox with water
Ware plate lower space；（2）Charging：Load sweatbox when raw material is heated to more than fusing point being in a liquid state；（3）Decrease temperature crystalline：By original
Material progressively cools to below its fusing point 10~20 DEG C with the rate of temperature fall no more than 4 DEG C/h.In cooling procedure, fusing point highest
Component first is come out with thick fibrous crystal morphological crystal, as wax layer temperature continues to reduce, other components by fusing point by height to
Low order crystallizes to form solid successively；（4）Heat up sweating：After wax layer temperature reaches default cooling final temperature, put
Fall to pad water；Raw material is slowly heated to default sweating final temperature again.In the sweating effort that heats up, various components press fusing point
Order from low to high is successively fused into liquid and flowed out（Under wax）, the wax layer residue that finally obtains（On wax）It is exactly Gao Rong
The wax of point, low oil-containing；（5）Crude product is collected：Heating sweating effort terminates follow-up high-temperature of continuing rising, is taken out with fusing on wax, i.e.,
For crude product；（6）Product purification, shaping, packaging：Subtractive process generally use is clay-filtered：It is warming up to after crude product is melted
Predetermined temperature, add carclazyte and simultaneously filtered after constant temperature was stirred to the scheduled time；It is again purpose product through being molded, packing.
To common sweating de-oiling method, in the sweating effort that heats up although wax and oily two class components are respectively at solid and liquid
Body state, but also be difficult to be kept completely separate.To make the oil content of final products meet the requirements, generally use extends sweating sessions simultaneously
The method for improving sweating final temperature.Extending sweating sessions can cause the production cycle to be grown；Part can be made by improving sweating final temperature
Wax removes with oil, causes product yield to decline.
Common sweating de-oiling method can produce soap wax and low melt point paraffin of the fusing point at 40 DEG C~60 DEG C.Taken off with solvent
Oily method is compared, and sweating de-oiling is intermittently operated, and product yield is relatively low, the production cycle is longer, but sweating de-oiling method has
Have the advantages such as small investment, production process are simple, operating cost is low, still have at present part producer using this method production soap wax and
Low melt point paraffin product.
For many years, sweating de-oiling method has obtained some development, such as CN89214332 in production equipment and process aspect（It is vertical
Formula square multipul sections spacer diaphoresis tank）、CN94223980.6（Ware type sudorific device）、CN98233254.8（Paraffin sweating pot）、
CN200920033500.X（Novel paraffin sweating tank）、CN201210508905.0（A kind of Efficient paraffin sweatbox）、
CN201320127680.4（Tubular type paraffin deoiler）Deng being improved in sweating de-oiling production equipment；CN91206202
（A kind of high-efficient sweat pot for paraffin wax）Improved in sweating de-oiling technique.But these methods there are still product yield it is relatively low,
The shortcomings of production cycle is longer.
Sweating de-oiling method is currently known for the unique without molten of commercial scale soap wax and low melt point paraffin product
Agent de-oiling method, advocating green, low-carbon energy-saving the concern for being increasingly subject to people today.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of preparation method of soap wax.Specifically in common sweating
On the basis of de-oiling method, solid particle is uniformly paved with wax layer surface before the sweating effort that heats up, and in heating sweating effort
In force air flow through wax layer, carry out the oil in liquid, accelerate wax and oil separating rate, and enhance wax and oil
Separating effect, so as to be effectively improved the yield of purpose product and shorten the production cycle.The inventive method has device throwing
Provide the advantages that low, production process is simple and operating cost is low, solvent-free pollution.
A kind of preparation method of soap wax of the present invention includes herein below：
（1）Water is padded in sweatbox；
（2）Using slack wax of the oil content less than 30% as raw material, load sweatbox after heating fusing；
（3）8 DEG C~20 DEG C are cooled to below slack wax fusing point with 1.0 DEG C/h~4.0 DEG C/h speed；
（4）The pad water in sweatbox is discharged, is then heated up with 0.5 DEG C/h~3.0 DEG C/h speed；In temperature-rise period
Force air flow through wax layer；Wax layer stops sweating after reaching predetermined temperature；
（5）Collect on wax；
（6）After refined, shaping it is purpose product on wax.
In the waxed Preparation Method of soap of the present invention, the oil content of described slack wax（In mass）Less than 30%, its melting range one
As be 25 DEG C~45 DEG C.Slack wax raw material can be the slack wax that atmosphere 3rd side cut or normal four lines distillate obtain through dewaxing.
In the waxed Preparation Method of soap of the present invention, preferably in step（3）After middle raw material slack wax decrease temperature crystalline and in step（4）
Before middle heating sweating effort, the solid particle of 10~100 mesh, preferably 20~50 mesh is uniformly paved with the surface of wax layer.Solid
The density of grain typically requires to be more than 4 g/cm3, can be the materials such as nonmetallic, metal and alloy, preferred density is 6~12 g/
cm3Metal and alloying pellet, such as zinc, iron, copper, lead and its more stable low price metal material of alloy chemical property.Can
To select the solid particle of two or more unlike material density, various solid particles can ratio similar in parts by weight
Example mixing.The density contrast of two kinds of adjacent solid particle materials of density is 1~5 g/cm3.Density described herein refers to form
The density of the material of solid particle, rather than the heap density of solid particle.Sweating effort can reclaim solid particle and clear after terminating
Wash to reuse.
In the waxed Preparation Method of soap of the present invention, described sweatbox is generally sweating ware, and wax layer it is added above plus
Pressure device and/or increase vacuum extractor below wax layer.It is described force air flow through wax layer and be utilized in more than wax layer increase
Big pressure（Air pressure）And/or pressure is reduced below wax layer（Air pressure）, wax layer is formed what pressure differential was realized up and down.Described pressure
Power difference is generally 0.1~5.0 atmospheric pressure, preferably 0.2~2.0 atmospheric pressure, to force air flow through wax layer.
In the waxed Preparation Method of soap of the present invention, described rate of temperature fall preferably 2.0 DEG C/h~3.0 DEG C/h.
In the waxed Preparation Method of soap of the present invention, step（3）The final temperature of middle cooling is preferably lower than slack wax fusing point 10 DEG C~
15℃。
In the waxed Preparation Method of soap of the present invention, preferably 1.0 DEG C~2.0 DEG C/h of described heating rate.Temperature-rise period it is pre-
It is 2 DEG C~10 DEG C of the fusing point less than purpose product to determine final temperature.
In the method for the present invention, the programming rate and cooling rate of said wax layer, air bath, water-bath, oil bath can be passed through
Or other feasible modes are controlled.
In the waxed Preparation Method of soap of the present invention, the described wax layer that forces air flow through can be in heating sweating effort arbitrary order
Section is implemented, and preferably implements initial stage in heating sweating.
In the waxed Preparation Method of soap of the present invention, the described wax layer that forces air flow through is by increasing pressure above wax layer
（Air pressure）Realize, the pressure preferably applied above wax layer is 0.2~2.0 atmospheric pressure（Gauge pressure）, and kept below wax layer
For normal pressure.
In the waxed Preparation Method of soap of the present invention, the described wax layer that forces air flow through is by reducing pressure below wax layer
（Air pressure）Realize, preferably the top of wax layer keeps normal pressure, and the pressure below wax layer is maintained -0.2~-1.0 atmospheric pressure
（Gauge pressure）.
Sweating de-oiling is to carry out separation production soap wax product using the wax property different with oily fusing point, but is sent out in heating
During sweat, the wax of solid-state and the oil of liquid are difficult to be kept completely separate in wax layer, and this is due to that two kinds of components of wax and oil are all non-pole
The hydrocarbon molecules of property, intermolecular force are larger；Capillary pipe structure is formed during the wax crystallization of solid-state simultaneously, has stronger bag to oil
Effect is covered, this results in only being difficult to be kept completely separate by wax in the common sweating effort of gravity natural separation and oil.In the prior art
The methods of generally use extension sweating sessions, raising sweating final temperature, makes the oil content of final products meet the requirements, but this
A little methods can cause production cycle length, wax product yield low again, influence the extensive use of sweating de-oiling technique.
The present invention is difficult to be kept completely separate reason by the further investigation to common sweating effort for wax and oil, by
Using air-flow to carry out the method for fluid oil by wax layer in heating sweating effort forces wax and oil to separate, and enhances wax and oil
Separating effect.And, it is also preferred that uniformly it is paved with the solid particle of 10~100 mesh on wax layer surface before the sweating effort that heats up.Rise
In warm sweating effort, as temperature raises, wax layer soften, because the density of solid particle is larger, its under gravity with compared with
Slow velocity sedimentation, so as to form the tiny duct run through up and down in wax layer, and be advantageous to the quick discharge of oil.Different densities
It is different with the sinking speed of the solid particle of particle diameter, it can such as ensure the overall process in sweating de-oiling using the solid particle of mixing
In in the different height of wax layer have the passage of more discharge fluid oil, be more beneficial for the quick discharge of oil.
It is an advantage of the invention that：By carrying out fluid oil using forcing air flow through wax layer in the sweating effort that heats up
Method, enhance the separating effect of wax and oil；The upper and lower Small Holes through wax layer formed simultaneously during solid particles sediment
Road, also promote the quick discharge of oil.So as to reach raising wax product yield and shorten the purpose of production cycle.Present invention side
The plant investment of method is low, production process is simple and operating cost is low, solvent-free pollution environment, makes this solvent-free life of sweating de-oiling
Produce the method more highly effective of soap wax.
Embodiment
Sweating ware top connects dismountable sealing device and is connected with surge tank and compressor, and/or under sweating ware
Portion connects surge tank and vavuum pump；With water-bath or air bath control wax layer heating, cooling speed；, can before the sweating effort that heats up
Solid particle is uniformly paved with wax layer surface；Used in the sweating effort that heats up and malleation is formed above wax layer and/or in wax layer
Negative pressure formed below carries out the oil in liquid to force air flow through wax layer, enhances the separating effect of wax and oil.Pass through
These means, purpose product yield can be made to improve 5~10 percentage points, the time in heating sweating stage reduces 30%~50%.
1-3 by the following examples, illustrate the preparation method of soap wax of the present invention.
Embodiment 1
The present embodiment includes：（1）Preparation,（2）Charging,（3）Decrease temperature crystalline,（4）Heating sweating,（5）Crude product is received
Collection,（6）The processes such as product purification.
（1）Preparation
The sealing system on sweating ware top is connected with surge tank and compressor.
Pad water in sweating ware ware plate bottom.
Sweating ware chuck and removable coil pipe are connected with the circulatory system, using water as medium；Start the heating of the circulatory system
Function, recirculated water is set to be warming up to 45 DEG C.
（2）Charging
With normal four lines slack wax（41.5 DEG C of fusing point, oil content 13.2%）For raw material, sweating ware is added after heating fusing；By disk
Pipe is immersed in raw material wax layer and fixed.
（3）Decrease temperature crystalline
Start the circulatory system refrigerating function, control wax layer temperature with 2.0 DEG C/h rate of temperature fall drop to 30.0 DEG C with
Wax layer is set to crystallize to form solid.Close the refrigerating function of the circulatory system.
（4）Heat up sweating
Discharge sweating ware pad water；
The outlet of sweating ware connects intermediate storage tank to receive under wax；Start the heating function of the circulatory system, with 1.5 DEG C/h liter
Warm speed makes wax layer temperature be increased to 35.0 DEG C；Connect sweating ware sealing device for upper portion of annular；Start compressor and keep in surge tank
Pressure stability is in 1.2~1.4 atmospheric pressure（Gauge pressure）, sweating ware ware plate lower section keeps normal pressure；Continue the heating speed with 1.5 DEG C/h
Rate makes wax layer temperature be increased to 42.0 DEG C of progress sweating de-oilings.
Stop compressor, terminate sweating degreasing process（Total heating-up time is 8 hours）.
（5）Crude product is collected
The outlet of sweating ware is changed to connect crude product storage tank；The circulatory system continues to be heated to 60 DEG C with fusing taking-up wax
On, as crude product.
（6）Product purification
Crude product is purpose product after clay-filtered, shaping, packaging.
Product property：47.1 DEG C of fusing point, oil content 1.52%, meet the associated specifications of commodity soap wax top grade product.
Soap wax product yield is 40.6%（Relative raw material slack wax）.
Embodiment 2
The present embodiment includes：（1）Preparation,（2）Charging,（3）Decrease temperature crystalline,（4）Heating sweating,（5）Crude product is received
Collection and metallic particles recovery,（6）The processes such as product purification.
（1）Preparation
The sealing system on sweating ware top is connected with surge tank and compressor.
Pad water in sweating ware ware plate bottom；In sweating ware ware plate upper berth bilayer Medium speed filter paper.
Sweating ware chuck and removable coil pipe are connected with the circulatory system, using water as medium；Start the heating of the circulatory system
Function, recirculated water is set to be warming up to 45 DEG C.
The copper particle and iron particle of the mesh of 30 mesh~50 are screened out, is by ratio of weight and the number of copies 1：1 is well mixed.
（2）Charging
With normal four lines slack wax（Property is the same as embodiment 1）For raw material, the sweating ware for completing filter paper is added after heating fusing；By disk
Pipe is immersed in raw material wax layer and fixed.
（3）Decrease temperature crystalline
Start the circulatory system refrigerating function, control wax layer temperature with 2.0 DEG C/h rate of temperature fall drop to 30.0 DEG C with
Wax layer is set to crystallize to form solid.Close the refrigerating function of the circulatory system.
Foregoing copper, iron hybrid particles are paved with wax layer surface.
（4）Heat up sweating
Discharge sweating ware pad water；
The outlet of sweating ware connects intermediate storage tank to receive under wax；Start the heating function of the circulatory system, with 1.5 DEG C/h liter
Warm speed makes wax layer temperature be increased to 35.0 DEG C；Connect sweating ware sealing device for upper portion of annular；Start compressor and keep in surge tank
Pressure stability is in 1.2~1.4 atmospheric pressure（Gauge pressure）, sweating ware ware plate lower section keeps normal pressure；Continue the heating speed with 1.5 DEG C/h
Rate makes wax layer temperature be increased to 42.0 DEG C of progress sweating de-oilings.
Stop compressor, terminate sweating degreasing process（Total heating-up time is 8 hours）.
（5）Crude product is collected and metallic particles recovery
The outlet of sweating ware is changed to connect crude product storage tank；The circulatory system continues to be heated to 60 DEG C with fusing taking-up wax
On, as crude product.
The mixed metal particles on filter paper are collected, cleaning, are dried in case reusing.
（6）Product purification
Crude product is purpose product after clay-filtered, shaping, packaging.
Product property：47.3 DEG C of fusing point, oil content 1.45%, meet the associated specifications of commodity soap wax top grade product.
Soap wax product yield is 43.7%（Relative raw material slack wax）.
Embodiment 3
The present embodiment includes：（1）Preparation,（2）Charging,（3）Decrease temperature crystalline,（4）Heating sweating,（5）Crude product is received
Collection and metallic particles recovery,（6）The processes such as product purification.
（1）Preparation
Surge tank is installed in sweating ware bottom and connects vavuum pump.
Pad water in sweating ware ware plate bottom；In sweating ware ware plate upper berth bilayer Medium speed filter paper.
The lead particle and zinc particle of the mesh of 20 mesh~40 are screened out, is by ratio of weight and the number of copies 1：1 is well mixed.
（2）Charging
With normal four lines slack wax（Property is the same as embodiment 1）For raw material, the sweating ware for completing filter paper is added after heating fusing.
（3）Decrease temperature crystalline
30.0 DEG C are dropped to so that wax layer, which crystallizes, to form solid with 3.0 DEG C/h rate of temperature fall with air bath control wax layer.
Foregoing lead, zinc hybrid particles are paved with wax layer surface.
（4）Heat up sweating
Discharge sweating ware pad water.
The outlet of sweating ware connects intermediate storage tank to receive under wax；Start vavuum pump and keeping buffer pressure inside the tank it is stable-
0.5~-0.7 atmospheric pressure（Gauge pressure）, wax layer top keeps normal pressure；Wax layer is controlled with 2.0 DEG C/h heating rate with air bath
Wax layer temperature is set to be increased to 42.0 DEG C of progress sweating de-oilings.
Stop vavuum pump, terminate sweating degreasing process（Total heating-up time is 6 hours）.
（5）Crude product is collected and metallic particles recovery
The outlet of sweating ware is changed to connect crude product storage tank；60 DEG C are warming up to air bath control wax layer, and wax is taken out with fusing
On, as crude product.
The mixed metal particles on filter paper are collected, cleaning, are dried in case reusing.
（6）Product purification
Crude product is purpose product after clay-filtered, shaping, packaging.
Product property：46.9 DEG C of fusing point, oil content 1.37%, meet the associated specifications of commodity soap wax top grade product.
Soap wax product yield is 42.3%（Relative raw material slack wax）.
Comparative example 1
With normal four lines slack wax（Property is the same as embodiment 1）For raw material, common sweat tank is added after heating fusing.With 2.0 DEG C/h
Rate of temperature fall wax layer temperature is dropped to 30.0 DEG C；Make wax layer temperature be increased to 42.0 DEG C with 1.0 DEG C/h heating rate to enter
Row sweating de-oiling（Total heating-up time is 12 hours）.Sweating is taken out on wax after terminating, and is produced for the purpose of being after clay-filtered, shaping
Product.
Product property：47.3 DEG C of fusing point, oil content 1.71%, meet the technical requirements of commodity soap wax.
Soap wax product yield is 34.1%.
Comparing embodiment 1-3 and comparative example 1 can be seen that the preparation method of soap wax of the present invention, by being spread on wax layer surface
Metallic particles forces air flow through wax to form the tiny duct run through up and down in sweating effort in the sweating effort that heats up
The method of layer, accelerates the rate of departure of wax and oil, and enhances the separating effect of wax and oil, so as to improve purpose wax product
Yield（Embodiment 1-3 adds 6.5,9.6 and 8.2 percentage points than comparative example 1 respectively）And shorten the production cycle（Heating hair
The time in sweat stage, embodiment 1-3 reduce 33%, 33% and 50% than comparative example 1 respectively）.
Claims (19)
1. a kind of preparation method of soap wax, including herein below：
（1）Water is padded in sweatbox；
（2）Using the slack wax that oil content is less than 30%, fusing point is 25 DEG C~45 DEG C as raw material, load sweatbox after heating fusing；
（3）8 DEG C~20 DEG C are cooled to below slack wax fusing point with 1.0 DEG C~4.0 DEG C/h speed；
（4）The pad water in sweatbox is discharged, is then heated up with 0.5 DEG C~3.0 DEG C/h speed；Gas is forced in temperature-rise period
Stream passes through wax layer；Wax layer stops sweating after reaching predetermined temperature；
（5）Collect on wax；
（6）After refined, shaping, packaging it is purpose product on wax；
Wherein, in step（3）After middle raw material slack wax decrease temperature crystalline and in step（4）Before middle heating sweating effort, in wax layer table
Face is uniformly paved with the solid particle of 10~100 mesh.
2. in accordance with the method for claim 1, it is characterised in that it is described force air flow through wax layer be utilized in wax layer with
It is upper to increase air pressure and/or air pressure is reduced below wax layer, wax layer is formed what pressure differential was realized up and down, described pressure differential is
0.1~5.0 atmospheric pressure.
3. in accordance with the method for claim 2, it is characterised in that described pressure differential is 0.2~2.0 atmospheric pressure.
4. in accordance with the method for claim 1, it is characterised in that the mesh number of the solid particle is 20~50 mesh.
5. in accordance with the method for claim 1, it is characterised in that the density of the solid particle is more than 4g/cm3。
6. in accordance with the method for claim 1, it is characterised in that methods described also includes herein below：Sweating effort terminates
Solid particle is reclaimed afterwards and is cleaned to reuse.
7. in accordance with the method for claim 5, it is characterised in that the material of the solid particle be zinc, iron, copper, lead and its
One or more in alloy.
8. in accordance with the method for claim 7, it is characterised in that described solid particle selects two or more unlike materials
The solid particle of density, the ratio mixing similar in parts by weight of two or more solid particles.
9. in accordance with the method for claim 8, it is characterised in that two kinds of adjacent solids of two or more solid particle Midst densities
The density contrast of particle material is 1~5 g/cm3。
10. in accordance with the method for claim 1, it is characterised in that described sweatbox is sweating ware.
11. in accordance with the method for claim 1, it is characterised in that step（3）In be cooled to 10 DEG C~15 below slack wax fusing point
℃。
12. in accordance with the method for claim 1, it is characterised in that described forces air flow through wax layer in heating sweating
Journey any stage is implemented.
13. in accordance with the method for claim 1, it is characterised in that step（3）Described in rate of temperature fall for 2.0 DEG C/h~
3.0℃/h。
14. in accordance with the method for claim 1, it is characterised in that step（4）Described in heating rate for 1.0 DEG C/h~
2.0℃/h。
15. in accordance with the method for claim 1, it is characterised in that step（4）The predetermined temperature of middle heating is to be produced less than purpose
2 DEG C~10 DEG C of the fusing point of product.
16. in accordance with the method for claim 2, it is characterised in that the described wax layer that forces air flow through is utilized in wax layer
Top increase air pressure realizes that the gauge applied above wax layer is 0.2~2.0 atmospheric pressure, and is remained below wax layer
Normal pressure.
17. in accordance with the method for claim 2, it is characterised in that the described wax layer that forces air flow through is utilized in wax layer
Lower section reduces what air pressure was realized, and normal pressure is kept above wax layer, and the gauge below wax layer is maintained -0.2~-0.8
Atmospheric pressure.
18. in accordance with the method for claim 5, it is characterised in that the density of the solid particle is 6~12g/cm3。
19. in accordance with the method for claim 12, it is characterised in that described forces air flow through wax layer in heating reality at initial stage
Apply.
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|---|---|---|---|---|
| GB687235A (en) * | 1950-03-24 | 1953-02-11 | Bataafsche Petroleum | Improvements in and relating to the treatment of paraffin wax |
| CN2055501U (en) * | 1989-07-27 | 1990-04-04 | 中国石油化工总公司抚顺石油化工研究院 | Vertical square multipul sections spacer diaphoresis tank |
| CN103789040A (en) * | 2012-11-05 | 2014-05-14 | 中国石油化工股份有限公司 | Method for production of high-melting-point petroleum wax |
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2014
- 2014-12-18 CN CN201410786236.2A patent/CN105779000B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB687235A (en) * | 1950-03-24 | 1953-02-11 | Bataafsche Petroleum | Improvements in and relating to the treatment of paraffin wax |
| CN2055501U (en) * | 1989-07-27 | 1990-04-04 | 中国石油化工总公司抚顺石油化工研究院 | Vertical square multipul sections spacer diaphoresis tank |
| CN103789040A (en) * | 2012-11-05 | 2014-05-14 | 中国石油化工股份有限公司 | Method for production of high-melting-point petroleum wax |
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| CN105779000A (en) | 2016-07-20 |
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