CN105316042A - New petroleum wax production method - Google Patents
New petroleum wax production method Download PDFInfo
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- CN105316042A CN105316042A CN201410361768.1A CN201410361768A CN105316042A CN 105316042 A CN105316042 A CN 105316042A CN 201410361768 A CN201410361768 A CN 201410361768A CN 105316042 A CN105316042 A CN 105316042A
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Abstract
The present invention discloses a new petroleum wax production method, which is characterized in that a deoiling raw material contacts a petroleum wax hydrorefining catalyst, a refining reaction is performed under a hydrorefining condition, and the hydrorefined deoiling raw material is subjected to solvent deoiling to produce the deoiled wax. According to the present invention, the disadvantage of the existing solvent deoiling production technology is overcome, the method for producing the high melting point petroleum wax by using the heavy dewaxed wax paste as the raw material is provided, the filtration speed can be improved, the clogging of the filtration cloth can be reduced, the product yield can be improved, and the deoiled wax can be obtained.
Description
Technical field
The present invention relates to a kind of novel method of producing petroleum wax.
Background technology
The production of petroleum wax mainly contains sweating de-oiling and solvent deoiling two kinds of methods, and de-oiling raw material comprises the petroleum fractions of cold press dewaxing slack wax, solvent dewaxing slack wax or other high-content wax amount.Sweating de-oiling is only applicable to the lighter raw material of cut, and can not realize continuous seepage, and current industrial less Bian uses.Solvent deoiling method is applicable to transformer oil plant, and the raw material of the various cut such as lube stock and bright stock, can realize serialization, long-cycle production, is the main production process of commodity oil wax.
Conventional solvent deoiling method Bian solvent dewaxing de-oiling joint process, the dewaxing slack wax containing solvent that dewaxing obtains adds solvent cut pulp, intensification de-oiling, filtering separation.This is one section of de-oiling.In most cases, the wax filter cake of one section of de-oiling adds solvent cut pulp, filtering separation again.This is two sections of de-oilings, and the wax filter cake of two sections of de-oilings obtains the dewaxed oil of low oil content after steaming and desolventizing.
Summary of the invention
For solving above-mentioned existing shortcoming, main purpose of the present invention is the novel method of the production petroleum wax providing a kind of practicality, de-oiling raw material first with petroleum waxes hydrofining catalytic catalyst exposure, under Hydrofinishing conditions, carry out refining reaction, the de-oiling raw material after hydrofining produces dewaxed oil through solvent deoiling.
For reaching above-described object, a kind of novel method of producing petroleum wax of the present invention adopts following technical scheme:
De-oiling raw material first with petroleum waxes hydrofining catalytic catalyst exposure, refining reaction is carried out under Hydrofinishing conditions, de-oiling raw material after hydrofining produces dewaxed oil through solvent deoiling, Hydrobon catalyst with aluminum oxide or aluminum oxide silicon monoxide for carrier component, with group VIB in the periodic table of elements and VIII race's metal for active ingredient, active ingredient is tungsten and nickel.
In catalyzer, active component content is from W0
325 35W%, Ni02 8W%, specific surface area>=160 ㎡/ɡ, pore volume>=0.3 ㏕/ɡ; In catalyzer, the content of active ingredient is W0
329.5 31.5W%, Ni04 5W%, specific surface area 200 240 ㎡/ɡ, pore volume 0.4 0.6 ㏕/ɡ;
;hydrorefined operational condition is: hydrogen dividing potential drop 2.0 20.0Mpa, volume space velocity 0.2 2.011/h, temperature of reaction 230 350 DEG C, hydrogen to oil volume ratio 100 1000.
Hydrorefined operational condition is: hydrogen dividing potential drop 2.0 20.0Mpa, volume space velocity 0.2 2.011/h, temperature of reaction 230 350 DEG C, hydrogen to oil volume ratio 100 1000; Hydrorefined operational condition, hydrorefined operational condition is: hydrogen dividing potential drop 4.0 8.0Map, volume space velocity 1.0 1.511/h, temperature of reaction 260 3001 DEG C, hydrogen to oil volume ratio 300 500.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
Overcome the shortcoming of existing solvent deoiling production technology, propose a kind of method being raw material production high-smelting point petroleum wax with heavier dewaxing slack wax, can filtration velocity be improved, alleviate the blocking of filter cloth, improve product yield, obtain dewaxed oil.
Embodiment
In order to further illustrate the present invention, further illustrate the present invention below in conjunction with embodiment.
The raw material of the embodiment of the present invention and comparative example Bian is that No. 650 neutral oil plants dewaxing slack wax (A) and bright stock dewax slack wax (B) its character in table 1.
Embodiment of the present invention hydrofining adopts fixed bed one stage hydrofining technique, and catalyst for refining is W-Ni/AL
20
3type catalyst for hydrorefining pertroleum wax.Catalyst activity component concentration is: WO
330.5W%, NiO4.5W%, specific surface area 220m
2/ g, pore volume 0.45ml/g, hydrogenation process conditions and the results are shown in Table 2.In embodiment, the fusing point of hydrogenation products and oleaginousness remain unchanged, and show substantially to occur without scission reaction, ensure that the characteristic index of petroleum wax is not destroyed.
The embodiment of the present invention and comparative example Bian one section of solvent deoiling technique, solvent for use is Jia Yi Tong Qe toluene Mixed Solvent, and content of methyl ethyl ketone is 65W%, its processing condition and the results are shown in Table 3.In table 3, paraffin and Microcrystalline Wax compare with the comparative example of respective the same terms respectively.Embodiment shows, the de-oiling raw material producing high-smelting point petroleum wax can make the filtration velocity of solvent deoiling improve 20 30% after hydrofining, and dewaxed oil yield improves 1 3%.
Namely de-oiling raw material can be No. 650 neutral oil plants, also can be the dewaxing slack wax of No. 500 neutral oil plants or No. 750 neutral oil plants or bright stock.
In solvent deoiling process, solvent for use is C
3~ C
6aliphatic ketone or its mixture, ketone C
6~ C
8aromatic hydrocarbons mixture, solvent is methylethylketone, methyl iso-butyl ketone (MIBK), methylethylketone/methyl iso-butyl ketone (MIBK) or methylethylketone/toluene, weight of solvent used in solvent deoiling process and the ratio of raw material weight are de-oiling one section of 4 12:1, each section of 2.0 6.0:1 after one section, the de-oiling temperature in solvent deoiling process is 5 40 DEG C.
Table 1 feedstock property
| Project | A | B |
| Fusing point DEG C | 61.5 | |
| Melt drop temperature DEG C | 65.0 | |
| Oleaginousness W%, | 23.16 | 9.45 |
| Kinematic viscosity (100 DEG C), mm 2/s | 9.510 | 23.15 |
| Molecular weight | 550 | 680 |
| Density (20 DEG C), kg/m 3 | 859 | 904 |
Table 2 hydrofining technology condition and result
Table 3 solvent deoiling processing condition and result
| Project | Relatively | Implement | Relatively | Implement | Relatively | Implement | Relatively | Implement |
| Example 1 | Example 5 | Example 2 | Example 6 | Example 3 | Example 7 | Example 4 | Example 8 | |
| De-oiling raw material | A | A1 | A2 | B | B1 | B | B2 | |
| Processing condition | ||||||||
| Solvent ratio (weight) | 4 | 4 | 6 | 6 | 8 | 8 | 12 | 12 |
| De-oiling temperature | 10 | 10 | 20 | 20 | 40 | 40 | 30 | 30 |
| ℃ | ||||||||
| Comparatively filtering rate, | 100,0 | 129.4 | 100.0 | 125.0 | 100.0 | 121.2 | 100.0 | 127.0 |
| kg/ m 2.h) | ||||||||
| Dewaxed oil | ||||||||
| Fusing point, DEG C | 67.8 | 67.2 | 70.0 | 69.4 | ||||
| Melt drop temperature DEG C | 80.9 | 80.6 | 77,9 | 77.0 | ||||
| Yield, W% | 45,1 | 47.9 | 42.8 | 44．4 | 30.0 | 31.2 | 36.1 | 34.3 |
Claims (3)
1. produce the novel method of petroleum wax for one kind, it is characterized in that, de-oiling raw material first with petroleum waxes hydrofining catalytic catalyst exposure, refining reaction is carried out under Hydrofinishing conditions, de-oiling raw material after hydrofining produces dewaxed oil through solvent deoiling, Hydrobon catalyst is with aluminum oxide or aluminum oxide silicon monoxide for carrier component, and with group VIB in the periodic table of elements and VIII race's metal for active ingredient, active ingredient is tungsten and nickel.
2. a kind of novel method of producing petroleum wax according to claim 1, is characterized in that, in described catalyzer, active component content is from W0
325 35W%, Ni02 8W%, specific surface area>=160 ㎡/ɡ, pore volume>=0.3 ㏕/ɡ; In described catalyzer, the content of active ingredient is W0
329.5 31.5W%, Ni04 5W%, specific surface area 200 240 ㎡/ɡ, pore volume 0.4 0.6 ㏕/ɡ;
;described hydrorefined operational condition is: hydrogen dividing potential drop 2.0 20.0Mpa, volume space velocity 0.2 2.011/h, temperature of reaction 230 350 DEG C, hydrogen to oil volume ratio 100 1000.
3. a kind of novel method of producing petroleum wax according to claim 2; it is characterized in that, described hydrorefined operational condition is: hydrogen dividing potential drop 2.0 20.0Mpa, volume space velocity 0.2 2.011/h, temperature of reaction 230 350 DEG C, hydrogen to oil volume ratio 100 1000; Hydrorefined operational condition; Said hydrorefined operational condition is: hydrogen dividing potential drop 4.0 8.0Map, volume space velocity 1.0 1.511/h, temperature of reaction 260 3001 DEG C, hydrogen to oil volume ratio 300 500.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361768.1A CN105316042A (en) | 2014-07-28 | 2014-07-28 | New petroleum wax production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361768.1A CN105316042A (en) | 2014-07-28 | 2014-07-28 | New petroleum wax production method |
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| Publication Number | Publication Date |
|---|---|
| CN105316042A true CN105316042A (en) | 2016-02-10 |
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ID=55244375
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| CN201410361768.1A Withdrawn CN105316042A (en) | 2014-07-28 | 2014-07-28 | New petroleum wax production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107523261A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of method for preparing PUR |
-
2014
- 2014-07-28 CN CN201410361768.1A patent/CN105316042A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107523261A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of method for preparing PUR |
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Application publication date: 20160210 |