CN107513431A - A kind of method for preparing paper packing material wax - Google Patents
A kind of method for preparing paper packing material wax Download PDFInfo
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- CN107513431A CN107513431A CN201610432967.6A CN201610432967A CN107513431A CN 107513431 A CN107513431 A CN 107513431A CN 201610432967 A CN201610432967 A CN 201610432967A CN 107513431 A CN107513431 A CN 107513431A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax
- C10G73/42—Refining of petroleum waxes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax
- C10G73/40—Physical treatment of waxes or modified waxes, e.g. granulation, dispersion, emulsion, irradiation
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Abstract
The invention discloses a kind of method for preparing paper packing material wax.This method prepares purpose product using paraffin as raw material, through sweating.On the basis of common sweating process, liquid composition is carried out to force to separate solids fraction and liquid composition by wax layer using air-flow in sweating effort, micro-bubble is formed in wax layer using gas caused by the decomposable asymmetric choice net material dissolved in the feed simultaneously, is also beneficial to the quick discharge of liquid composition.The inventive method has the advantages that equipment investment is low, preparation process is simple and operating cost is low, safety, energy-conservation and solvent-free pollution.
Description
Technical field
The invention belongs to Wax special production technical field, more particularly to a kind of method for preparing paper packing material wax.
Background technology
There is long history using wax to process paper packing material, this is to make use of the performances such as the lubrication of wax, waterproof, intensity, gloss, packaging and the packaging for foodstuff of weight article have been widely used in, and the Wax for being used for food wrapper also has the characteristics that anti-smell, fragrance protectiveness, meets FDA requirements.
It is stacked together or rolls up through the finished paper products of wax when putting storage together, because of temperature, the effect of time, pressure, occurs that nature pastes phenomenon between paper and paper, be referred to as " hardened "（It is commonly called as adhesion）.The principal element for causing wrapping paper product hardened is fusing point, chemical composition and the oil content of selected wax, and this is the major issue that great care is answered when processing paper products with wax.
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 atoleine, soap manufacturing paraffin, paraffin and microwax.Paraffin is that lube cut produces through steps such as dewaxing, de-oiling, refined and shapings in crude oil, typically contains C20~C50The component such as n-alkane, isoparaffin and a small amount of cycloalkane, usual fusing point is 50 DEG C~74 DEG C.Common paraffin wax product has wider carbon number distribution.
Dewaxing is that the process for the slack wax that oil content is 10~30% or so is prepared by raw material of lube cut.De-oiling is that the process of scale wax of the oil content below 2% is prepared using slack wax as raw material, and de-oiling technique mainly has solvent deoiling and sweating de-oiling.Scale wax is again through clay-filtered or hydrofinishing and shaping, packaging and other steps, you can obtains commodity oil wax.
Solvent fractionation method is in selective solvent according to wax with oil（Acetone, benzene and toluene mixture；Or acetone, toluene；Or MEK, toluene）What the property of middle different solubility was separated.Solvent deoiling technique have the advantages that production process is continuous, wax high income, finished product wax oil content can it is very low, production cost is relatively low, be the main flow de-oiling technique of current large-scale production petroleum paraffin product.But solvent deoiling technique productions equipment investment is big；Need largely to use solvent in production process, 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 separation method is separated using the wax property different with oily fusing point.The molecular weight of various hydro carbons and structure Bu Tong can all make its fusing point different in pertroleum wax.When being all n-alkane structure, the fusing point of the larger n-alkane of molecular weight 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 be less than n-alkane, and isomery degree more high-melting-point is lower, or even just be at normal temperatures liquid condition, i.e., usually said oil.So sweating separation method can reduce oil content, isoparaffin content and the width of carbon distribution of product simultaneously.
Compared with distillating method, because the melting temperature of various hydro carbons is far below boiling temperature, so the energy consumption of sweating separation process is far below separated；Compared with solvent fractionation method, sweating separation process is without using solvent, so sweating separation process is safe, saves and on environment without influence.
Common sweating process mainly includes the following steps that：（1）Preparation：Pad water（Sweatbox ware plate lower space is full of with water）After feed（Load sweatbox when raw material is heated to more than fusing point being in a liquid state）；（2）Crystallization：Raw material is progressively cooled to below its fusing point 10 DEG C~20 DEG C with the rate of temperature fall no more than 4 DEG C/h.In cooling procedure, various components are crystallized to form solid successively by the order of fusing point from high to low；（3）Sweating：After wax layer temperature reaches default cooling final temperature, pad water is bled off；Raw material is slowly heated to default sweating final temperature again.In sweating effort, various components are successively fused into liquid by the order of fusing point from low to high and flowed out（Under wax）, the wax layer residue that finally obtains（On wax）It is exactly high-melting-point, the wax of low oil-containing；（4）It is refined：Collect crude product（Sweating effort terminates follow-up high-temperature of continuing rising, is taken out with fusing on wax, as crude product）, through clay-filtered（Predetermined temperature is warming up to after crude product is melted, carclazyte is added and is simultaneously filtered after constant temperature was stirred to the scheduled time）Afterwards, reshaping, packaging are purpose product.
Common sweating separating technology can produce fusing point has the soap manufacturing paraffin and low melt point paraffin of thick flaky crystal structure under 40 DEG C~60 DEG C of solid-state, but for common sweating separation method, the solids fraction in the sweating effort that heats up（The wax of higher melt）And liquid composition（Oil and the wax compared with low melting point）Although being respectively at two kinds of phases of solid and liquid, it also is difficult to be kept completely separate.To make the oil content of final products meet the requirements, generally use extends sweating sessions and the method for improving sweating final temperature, but can so cause production cycle length and product yield decline.
Compared with solvent separates, sweating process is intermittently operated, and product yield is relatively low, the production cycle is longer, but sweating process have the advantages that small investment, production process are simple, operating cost is low, production process is safe, energy-conservation and it is environmentally safe, still have at present part producer using this method production soap manufacturing paraffin product.
For many years, sweating method has obtained some development, such as CN89214332 in production equipment and process aspect（Vertical 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 production equipment；CN91206202（A kind of high-efficient sweat pot for paraffin wax）Improved on sweating process, but there are still the shortcoming such as the production cycle is long, product yield is low.
Sweating process is to be currently known unique solvent-free separation method for commercial scale wax product, and in promotion green low-carbon, today of environmental protection and energy saving, the demand that paper packing material wax is prepared using sweating process is more urgent.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of method for preparing paper packing material wax.Using common paraffin as raw material, on the basis of common sweating process, the material that oil-soluble decomposable asymmetric choice net produces gas is added after raw material heating fusing；And liquid composition is carried out to force to separate solids fraction and liquid composition by wax layer using air-flow in sweating effort, enhance separating effect and accelerate separating rate；And increase the constant temperature stage of sweating effort, this solvent-free separation method of sweating is produced high-quality paper packing material wax.The inventive method has the advantages that investment of production equipment is low, production process is simple and operating cost is low, safety, energy-conservation and solvent-free pollution.
A kind of method for preparing paper packing material wax of the present invention, including herein below：
（1）Charging：Using paraffin as raw material, load sweatbox after heating fusing；
（2）Crystallization：Wax layer is cooled to 5 DEG C~30 DEG C below raw material fusing point of cooling final temperature with 1.0 DEG C/h~4.0 DEG C/h speed；
（3）Heating-constant temperature sweating：Heated up with 1.5 DEG C/h~3.5 DEG C/h speed, wax layer reaches predetermined temperature and constant temperature stops sweating afterwards for a period of time, and wax layer is forced air flow through in sweating effort；
（4）It is refined：After refined it is paper packing material wax product on wax.
In the method for the present invention, for the melting point of paraffin wax at 46 DEG C~74 DEG C, oil content is not more than 2.0 mass %.
In the method for the present invention, in step（1）After raw material heating fusing, the oil soluble material that decomposable asymmetric choice net produces gas is preferably added to.Concrete operations are first to heat sweating raw material and melt, then load sweatbox after the material of oil-soluble decomposable asymmetric choice net generation gas is dissolved in into raw material.Described oil-soluble decomposable asymmetric choice net material includes organic azo compound, sulfonyl hydrazines compound, organic nitroso compounds, organic peroxide etc., the preferably one or more in organic azo compound and organic peroxide.The addition of oil-soluble decomposable asymmetric choice net material is the 0.01%~15.00% of raw material weight, preferably 0.03%~8.00%.
Wherein, described organic azo compound is selected from ABVN（ABVN）, azodiisobutyronitrile（AIBN）, azo diisopropyl imidazoline hydrochloride（ACCN）One or more in the one group of material formed；Described sulfonyl hydrazines compound is selected from benzene sulfonyl hydrazide, unifor, 4,4 '-bis oxide（Benzene sulfonyl hydrazide）The one group of material formed；Described organic nitroso compounds are selected from dinitrosopentamethylene tetramine and/or N, N '-dimethyl N, N '-dinitroso phthalic amide；The organic peroxide is selected from dibenzoyl peroxide（BPO）, dilauroyl peroxide（LPO）, diacetyl peroxide, dicetyl peroxydicarbonate isopropyl ester（IPP）, di-cyclohexylperoxy di-carbonate（DCPO）Etc. one group of material of composition.
In the method for the present invention, described sweatbox is sweating ware, and increases in wax layer pressue device added above and/or below wax layer vacuum plant.In step（3）In sweating effort, the described wax layer that forces air flow through uses the increase air pressure above wax layer and/or air pressure is reduced below wax layer, wax layer upper and lower is formed pressure differential and realizes.Described pressure differential is generally 0.1~5.0 atmospheric pressure, preferably 0.2~2.0 atmospheric pressure, to force air flow through wax layer.
In the method for the present invention, step（2）The rate of temperature fall of the crystallization preferably 1.5 DEG C/h~3.5 DEG C/h.Described cooling final temperature is preferably 8 DEG C~15 DEG C below raw material fusing point.
In the method for the present invention, step（3）The heating rate of described sweating effort preferably 1.5 DEG C/h~3.0 DEG C/h；The predetermined temperature of the heating is purpose product fusing point -10 DEG C~purpose product fusing point；It is described be warming up to preset temperature after, the increase constant temperature stage, the time in constant temperature stage was 0~5.0 hour, preferably 0.1~5.0 hour, more preferably 1.0~5.0 hours so that solids fraction separates more fully with liquid composition.
In the method for the present invention, the programming rate and cooling rate of said wax layer, it can be controlled by air bath, water-bath, oil bath or other feasible modes, it is preferred to use water-bath or oil bath.When controlling wax layer heating rate and rate of temperature fall using water-bath or oil bath mode, chuck can be increased outside sweating ware, chuck is connected with removable coil pipe and the circulatory system, chuck, coil pipe etc. can make wax layer lifting/lowering temperature process faster, wax layer more uniform temperature；The circulatory system has program cooling/heating function, and the circulatory system adds the material such as water or conduction oil as circulatory mediator.
In the method for the present invention, step（3）The sweating effort forces air flow through wax layer and can implemented in sweating effort any stage, preferably implements initial stage in sweating.
In the method for the present invention, step（3）The wax layer that forces air flow through of the sweating effort is utilized in what increase air pressure above wax layer was realized, can such as apply 0.2~2.0 atmospheric pressure above wax layer（Gauge pressure）Pressure, and wax layer below remain normal pressure.
In the method for the present invention, step（3）The wax layer that forces air flow through of the sweating effort is utilized in what reduction air pressure below wax layer was realized, and normal pressure can be such as kept above wax layer, and -0.2~-1.0 atmospheric pressure are maintained below wax layer（Gauge pressure）Pressure.
The main function that wax is used for paper packing material is waterproof, protection against the tide, improves intensity and wet strength（Such as explosive paper roll, moistureproof carton）, while lubrication can also be played, improve the effect such as gloss.But hardened phenomenon easily occurs in the paper packing material of waxing, the outward appearance of packaging, or even damage packaging material can be influenceed when being separated again after hardened.
It is hardened with environment temperature, resting period, the external condition such as storage pressure it is relevant, environment temperature is higher, the resting period is longer, storage pressure is bigger, and hardened phenomenon is more serious.Paper packing material is to determine whether hardened internal factor with the property of wax, and the method for the high wax of generally use selection fusing point is to reduce hardened tendency.Anti-compaction can generally represent that sticky point and/or the higher expression anti-compaction of junction temperature can be better with sticky point and/or junction temperature.
Even if fusing point identical wax, sticky point and junction temperature also have obvious difference, therefore can not simply rely on fusing point selection paper packing material wax.Test result indicates that paper packing material directly affects sticky point and junction temperature with the chemical composition of wax, while it also determine its waterproof, protection against the tide, improve the performance such as intensity and wet strength.In general, the carbon distribution of paper packing material wax is wider, oil content is bigger, and sticky point and junction temperature are lower.The increase of oil content and isomery hydrocarbon content can cause the hydraulic performance declines such as waterproof, protection against the tide and intensity, but the too low toughness that can cause wax of isomery hydrocarbon content declines, and the folding line penetrability of packaging material can be made during as paper packing material wax substantially to become big.In summary, paper packing material wax should have narrow carbon distribution, low oil content, appropriate isomery hydrocarbon content it is had higher sticky point and junction temperature in chemical composition, and with preferable waterproof, protection against the tide, the combination property for improving intensity and wet strength.Common oil content in paraffin wax is higher, carbon number distribution is wider, and hardened phenomenon, and the poor-performing such as waterproof, protection against the tide are easily produced when being directly used as paper packing material with wax.
Sweating separation method is separated using the different property of various component fusing points, but solids fraction with liquid composition is difficult to be kept completely separate in sweating effort, and this is due to wax and oily two kinds of components are all nonpolar hydrocarbon molecules, and intermolecular force is larger；The wax crystallization of solid-state forms capillary pipe structure simultaneously, has stronger suction-operated to oil, and this results in only being difficult to be kept completely separate by wax in the common sweating effort of gravity natural separation and oil.The methods of generally use extension sweating sessions, raising sweating final temperature, makes the oil content of final products meet the requirements, but this can cause the production cycle to extend again, wax product yield reduces.These have impact on the extensive use of sweating separation method.
The present invention is in order to prepare paper packing material wax, pass through the further investigation to common paraffin chemical composition, for its oil content is higher, carbon number distribution it is wider be performance deficiency when causing it to be used as paper packing material wax the reason for, reduce oil content by using sweating method and reduce carbon number distribution width.By the further investigation to common sweating effort, it is difficult to liquid composition separate reason for solids fraction, using forcing air flow through wax layer in sweating effort, and increases the constant temperature stage in sweating effort；Oil-soluble decomposable asymmetric choice net material further preferably is added after raw material heating fusing simultaneously, these measures significantly reduce the oil content and carbon number distribution width of paraffin, so as to improve sticky point temperature and waterproof, humidity resistance.
The reason for being difficult to separate with liquid composition for solids fraction in sweating effort, by carrying out method pressure solids fraction and the separation of liquid composition of liquid composition by wax layer using air-flow in sweating effort, enhance separating effect and accelerate separating rate；Oil-soluble decomposable asymmetric choice net material further preferably is added after raw material heating fusing simultaneously, these material decomposable asymmetric choice nets produce gas, and have preferable dissolubility in the feed and be dispersed in wax layer.Wax layer is in softer solid state in the time that raw material terminates after being cooled to below fusing point to sweating effort, decomposable asymmetric choice net material slowly decomposes the gas discharged during this, dispersed micro-bubble can be formed in wax layer, the space that these micro-bubbles are formed is easy to form some tiny passages in wax layer in sweating effort, so as to be advantageous to the discharge of liquid composition in sweating effort.It is preferred that the oil-soluble decomposable asymmetric choice net material of the gas of the generation nontoxic no special odor such as nitrogen or carbon dioxide is decomposed, and the other materials molecular weight generated is low, and wax layer will be discharged with liquid composition in sweating effort.Being aided with the constant temperature stage of sweating effort again makes solids fraction separate the methods of more abundant with liquid composition so that sweating process prepares suitable paper packing material wax.
It is an advantage of the invention that：Enhance the separating effect of solids fraction and liquid composition by using air-flow to carry out by wax layer the method for liquid composition in sweating effort and accelerate separating rate；Dispersed micro-bubble is formed in wax layer using gas caused by oil-soluble decomposable asymmetric choice net substance decomposition simultaneously, is also beneficial to the quick discharge of liquid composition；And increase the processes such as the constant temperature stage of sweating effort, so as to prepare suitable paper packing material wax.The present invention method have the advantages that plant investment is low, production process is simple and operating cost is low, safety, energy-conservation and it is solvent-free pollution environment.
Embodiment
The present invention is using common paraffin as raw material, and on the basis of common sweating process, sweating ware top connects dismountable sealing device and is connected with pressurized buffer tank and compressor, and/or connects pressure-reducing cushioning tank and vavuum pump in sweating ware bottom；Raw material heating is melted and is preferably added to load sweating ware after oil-soluble decomposable asymmetric choice net produces the material of gas；Wax layer heating-cooling speed is controlled with water-bath；In sweating effort, start compressor with wax layer malleation formed above, and/or start vavuum pump with wax layer negative pressure formed below, to force air flow through wax layer；It is warming up to preset temperature and constant temperature stops sweating effort afterwards for a period of time；After refined, shaping, packaging it is paper packing material wax product on wax.
1-3 illustrates the method for preparing paper packing material wax of the present invention by the following examples.As without especially indicating, it is mass percent to be related to % below.
Embodiment
1
The present embodiment includes：（1）Preparation,（2）Crystallization,（3）Heating-constant temperature sweating,（4）The process such as refined.
（1）Preparation
Pad water below sweating ware ware plate.The sealing system of sweating ware and pressurized buffer tank and compressor are connected；Pressure-reducing cushioning tank is installed in sweating ware bottom and connects vavuum pump；Sweating ware chuck and removable coil pipe are connected with the circulatory system, coil pipe is fixed on sweating ware；Using water as heat-conducting medium, start the heating function of the circulatory system, recirculated water is warming up to 62 DEG C.
With 58#Semi-refined wax（Sinopec Jingmen Company produces, 58.6 DEG C of fusing point, oil content 1.62%, 34.5 DEG C of sticky point temperature）For raw material, sweating ware is added after being heated to 62 DEG C of fusings.
（2）Crystallization
Start the refrigerating function of the circulatory system, wax layer temperature is dropped to 46.0 DEG C with 2.5 DEG C/h rate of temperature fall.Close the refrigerating function of the circulatory system.
（3）Heating-constant temperature sweating
Discharge sweating ware pad water.Sweating ware outlet connection intermediate storage tank（Ⅰ）To receive under wax；The sealing system on sweating ware top is installed；Start compressor and keep pressurized buffer pressure inside the tank stable in 1.1~1.3 atmospheric pressure（Gauge pressure）, sweating ware ware plate lower section keeps normal pressure；Start circulation system function, wax layer temperature is increased to 50.0 DEG C with 1.5 DEG C/h heating rate；Stop compressor.
Start vavuum pump and keep pressure-reducing cushioning pressure inside the tank stable in -0.4~-0.6 atmospheric pressure（Gauge pressure）, wax layer top air pressure holding normal pressure；Continue to make wax layer temperature be increased to 56.0 DEG C and constant temperature 2.0 hours so that the solids fraction in wax layer is sufficiently separated with liquid composition with 1.5 DEG C/h heating rate.Stop vavuum pump, terminate sweating effort.
Sweating ware exports changing-over crude product storage tank（Ⅰ）To receive on wax；Continue the temperature of rise recirculated water to 75 DEG C, taken out with fusing on wax, as crude product（Ⅰ）.
（4）It is refined
Crude product（Ⅰ）It is paper packing material wax product after clay-filtered, shaping, packaging（Ⅰ）.
Paper packing material wax product（Ⅰ）Property：60.2 DEG C of fusing point, oil content 0.53%, 44.5 DEG C of sticky point temperature；
Paper packing material wax product（Ⅰ）Yield is 45.6%（Relative to raw material 58#Semi-refined wax）.
Embodiment
2
The present embodiment includes：（1）Preparation,（2）Crystallization,（3）Heating-constant temperature sweating,（4）The process such as refined.
（1）Preparation
Pad water below sweating ware ware plate.The sealing system of sweating ware and pressurized buffer tank and compressor are connected；Pressure-reducing cushioning tank is installed in sweating ware bottom and connects vavuum pump；Sweating ware chuck and removable coil pipe are connected with the circulatory system, coil pipe is fixed on sweating ware；Using water as heat-conducting medium, start the heating function of the circulatory system, recirculated water is warming up to 62 DEG C.
With 58#Semi-refined wax（With embodiment 1）For raw material, the dilauroyl peroxide that 62 DEG C of fusings add 0.38% is heated to, sweating ware is added after stirring.
（2）Crystallization
Start the refrigerating function of the circulatory system, wax layer temperature is dropped to 46.0 DEG C with 2.5 DEG C/h rate of temperature fall.Close the refrigerating function of the circulatory system.
（3）Heating-constant temperature sweating
Discharge sweating ware pad water.Sweating ware outlet connection intermediate storage tank（Ⅱ）To receive under wax；The sealing system on sweating ware top is installed；Start compressor and keep pressurized buffer pressure inside the tank stable in 1.1~1.3 atmospheric pressure（Gauge pressure）, sweating ware ware plate lower section keeps normal pressure；Start circulation system function, wax layer temperature is increased to 50.0 DEG C with 1.5 DEG C/h heating rate；Stop compressor.
Start vavuum pump and keep pressure-reducing cushioning pressure inside the tank stable in -0.4~-0.6 atmospheric pressure（Gauge pressure）, wax layer top air pressure holding normal pressure；Continue to make wax layer temperature be increased to 56.0 DEG C and constant temperature 2.0 hours so that the solids fraction in wax layer is sufficiently separated with liquid composition with 1.5 DEG C/h heating rate.Stop vavuum pump, terminate sweating effort.
Sweating ware exports changing-over crude product storage tank（Ⅱ）To receive on wax；Continue the temperature of rise recirculated water to 75 DEG C, taken out with fusing on wax, as crude product（Ⅱ）.
（4）It is refined
Crude product（Ⅱ）It is paper packing material wax product after clay-filtered, shaping, packaging（Ⅱ）.
Paper packing material wax product（Ⅱ）Property：59.8 DEG C of fusing point, oil content 0.36%, 48.0 DEG C of sticky point temperature；
Paper packing material wax product（Ⅱ）Yield is 50.5%（Relative to raw material 58#Semi-refined wax）.
Embodiment
3
The present embodiment includes：（1）Preparation,（2）Crystallization,（3）Heating-constant temperature sweating,（4）The process such as refined.
（1）Preparation
Pad water below sweating ware ware plate.The sealing system of sweating ware and pressurized buffer tank and compressor are connected；Pressure-reducing cushioning tank is installed in sweating ware bottom and connects vavuum pump；Sweating ware chuck and removable coil pipe are connected with the circulatory system, coil pipe is fixed on sweating ware；Using water as heat-conducting medium, start the heating function of the circulatory system, recirculated water is warming up to 62 DEG C.
With 58#Semi-refined wax（With embodiment 1）For raw material, the dicetyl peroxydicarbonate isopropyl ester that 62 DEG C of fusings add 6.2% is heated to, sweating ware is added after stirring.
Process（2）~（4）With embodiment 2.
Manufactured in the present embodiment is paper packing material wax product（Ⅲ）Property：59.9 DEG C of fusing point, oil content 0.38%, 47.6 DEG C of sticky point temperature；
Paper packing material wax product（Ⅲ）Yield is 50.2%（Relative to raw material 58#Semi-refined wax）.
Comparative example
1
With 58#Semi-refined wax（With embodiment 1）For raw material, sweating ware is added after being heated to 62 DEG C of fusings；Wax layer temperature is set to drop to 46.0 DEG C with 2.0 DEG C/h rate of temperature fall；Wax layer temperature is set to be increased to 56.0 DEG C with 1.0 DEG C/h heating rate again；Sweating ware exports changing-over crude product storage tank（Ⅳ）；Continue the temperature of rise conduction oil to 75 DEG C, taken out with fusing on wax, as crude product（Ⅳ）；Crude product（Ⅳ）It is paper packing material wax product after clay-filtered, shaping, packaging（Ⅳ）.
Paper packing material wax product（Ⅳ）Property：60.9 DEG C of fusing point, oil content 0.87%, 40.0 DEG C of sticky point temperature；Yield is 38.2%（Relative to raw material 58#Semi-refined wax）.
The method of the invention for preparing paper packing material wax can be seen that by embodiment 1-3, pass through the improvement for increasing pressurization and/or vacuum facility etc. to sweatbox；Dispersed short space is formed in wax layer using gas caused by oil-soluble decomposable asymmetric choice net material, the improvement to sweating process such as wax layer, the constant temperature stage for increasing sweating effort is forced air flow through in sweating effort；Enhance the separating effect of solids fraction and liquid composition and accelerate separating rate（Compared with comparative example 1, for embodiment 1-3 in the case of cooling, heating rate are faster, the oil content of product have dropped 0.34 percentage point, 0.51 percentage point and 0.49 percentage point respectively；Sticky point temperature has been respectively increased 4.5 DEG C, 8.0 DEG C and 7.6 DEG C；Yield has been respectively increased 7.4 percentage points, 12.3 percentage points and 12.0 percentage points）, so as to effectively eliminate non-Suitable ingredients in raw material, sticky point temperature is improved, sweating process is produced more efficiently at paper packing material wax product.
Claims (14)
1. a kind of method for preparing paper packing material wax, including herein below：
（1）Charging：With fusing point at 50 DEG C~74 DEG C, paraffin of the oil content no more than 2.0 mass % is raw material, and the material that oil-soluble decomposable asymmetric choice net produces gas is added after heating fusing, loads sweatbox；
（2）Crystallization：Wax layer is cooled to 5 DEG C~30 DEG C below raw material fusing point of cooling final temperature with 1.0 DEG C/h~4.0 DEG C/h speed；
（3）Heating-constant temperature sweating：Heated up with 1.5 DEG C/h~3.5 DEG C/h speed, wax layer reaches predetermined temperature and constant temperature stops sweating afterwards for a period of time, and wax layer is forced air flow through in sweating effort；
（4）It is refined：After refined it is paper packing material wax product on wax.
2. in accordance with the method for claim 1, it is characterised in that step（1）Described in oil-soluble decomposable asymmetric choice net produce gas material addition be raw material weight 0.01%~15.00%.
3. in accordance with the method for claim 2, it is characterised in that step（1）Described in oil-soluble decomposable asymmetric choice net produce gas material addition be raw material weight 0.03%~8.00%.
4. in accordance with the method for claim 1, it is characterised in that step（1）Described in oil-soluble decomposable asymmetric choice net produce gas material be selected from organic azo compound, sulfonyl hydrazines compound, organic nitroso compounds, organic peroxide form one group of material.
5. in accordance with the method for claim 4, it is characterised in that described organic azo compound is selected from one group of material that ABVN, azodiisobutyronitrile, azodicarbonamide and azo diisopropyl imidazoline hydrochloride are formed；Described sulfonyl hydrazines compound is selected from one group of material that benzene sulfonyl hydrazide, unifor, 4,4 '-bis oxide (benzene sulfonyl hydrazide) are formed；Described organic nitroso compounds are selected from dinitrosopentamethylene tetramine and/or N, N '-dimethyl N, N '-dinitroso phthalic amide；Described organic peroxide is selected from one group of material that dibenzoyl peroxide, dilauroyl peroxide, dicetyl peroxydicarbonate isopropyl ester and di-cyclohexylperoxy di-carbonate are formed.
6. in accordance with the method for claim 4, it is characterised in that step（1）Described in oil-soluble decomposable asymmetric choice net produce gas material be organic azo compound and/or organic peroxide.
7. in accordance with the method for claim 1, it is characterised in that step（2）Described in cooling final temperature for 8 DEG C~15 DEG C below sweating raw material melt drop temperature.
8. in accordance with the method for claim 1, it is characterised in that step（3）Described in the wax layer that forces air flow through use to increase above wax layer and air pressure and/or air pressure reduced below wax layer, wax layer upper and lower is formed pressure differential and realize that described pressure differential is 0.1~5.0 atmospheric pressure, preferably 0.2~2.0 atmospheric pressure.
9. in accordance with the method for claim 1, it is characterised in that step（3）Described in the predetermined temperature that heats up be purpose product fusing point -10 DEG C~purpose product fusing point.
10. in accordance with the method for claim 1, it is characterised in that step（3）The time of constant temperature described in sweating effort is 0.1~5.0 hour, preferably 1.0~5.0 hours.
11. in accordance with the method for claim 1, it is characterised in that step（3）Described in the wax layer that forces air flow through implement at heating initial stage.
12. in accordance with the method for claim 9, it is characterised in that the described wax layer that forces air flow through uses the increase air pressure above wax layer to realize, applies the gauge of 0.2~2.0 atmospheric pressure above wax layer, and remains normal pressure below wax layer.
13. in accordance with the method for claim 9, it is characterised in that the described wax layer that forces air flow through uses the reduction air pressure below wax layer to realize that air pressure keeps normal pressure above wax layer, and maintains the gauge of -0.2~-1.0 atmospheric pressure below wax layer.
14. in accordance with the method for claim 1, it is characterised in that described sweatbox is sweating ware.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610432967.6A CN107513431B (en) | 2016-06-17 | 2016-06-17 | A method of preparing paper packing material wax |
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| CN201610432967.6A CN107513431B (en) | 2016-06-17 | 2016-06-17 | A method of preparing paper packing material wax |
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| CN107513431B CN107513431B (en) | 2019-04-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015357A (en) * | 1988-01-04 | 1991-05-14 | Amoco Corporation | Wax sweating |
| CN1189527A (en) * | 1997-01-27 | 1998-08-05 | 王福祥 | Quick sweating wax making tech. |
-
2016
- 2016-06-17 CN CN201610432967.6A patent/CN107513431B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015357A (en) * | 1988-01-04 | 1991-05-14 | Amoco Corporation | Wax sweating |
| CN1189527A (en) * | 1997-01-27 | 1998-08-05 | 王福祥 | Quick sweating wax making tech. |
Non-Patent Citations (1)
| Title |
|---|
| 陈英等: "加氢尾油生产基础油和石蜡工艺研究", 《润滑油》 * |
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| CN107513431B (en) | 2019-04-12 |
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