SU925990A1 - Process for producing medicinal petrolatum - Google Patents

Description

one

The invention relates to the refining and petrochemical industries, in particular to the production of medical vaseline.

It is known that medical petrolatum is produced by fusing ceresin, paraffin, purified petrolatum, or their mixtures with purified petroleum oil

However, upon receipt of medical petroleum jelly, it is necessary to thoroughly clean the constituent components of petroleum jelly or himself, as well as the use of highly deficient paraffins and oils.

There is also known a method for producing petrolatum-based medical petrolatum. The raffinate of furfural oil purification is used as the oil component. First, petrolatum is fused with raffinate, then treated with solvents commonly used for dewaxing, and ceresin and crude petroleum jelly are obtained.

The latter is subjected to sulfuric acid treatment. The purification process consists of a series of stages: the treatment of vaseline with a mixture of technical sulfuric acid and oleum; sludge acid tar and phase separation; neutralization with ammonia mixed with 50% ethanol; sludge neutralization products and phase separation; contact cleaning with bleaching earth 2.

to

The disadvantage of this method is the complexity of petroleum jelly cleaning technology. In addition, the yield of the purified product with sulfuric acid

15 . cleaning is in the order of 50. This leads to the formation of large amounts of acidic tar, which, due to the difficulty of its disposal, is capable of "contaminating the environment

20 environment waste production. Another disadvantage of the method is the limited resources of the mineral oil.

The aim of the invention is to simplify the technology of producing medical vaseline, as well as expand the raw material base for their production.

This goal is achieved in that according to the method of obtaining medical petroleum jelly, which includes cleaning and fusing petrolatum with an oil component, use slop-10 wax to de-oil paraffin fractions as an oil component and clean up petrolatum and slokowk with a complex containing aluminum chloride , paraffin carbon, hydrogens and dialkyldithiophosphate zinc, followed by fusing them. It is desirable to carry out cleaning with a complex of the following composition, May. %: Aluminum chloride 6p-80 Dialkyl dithiophosphate zinc-B Paraffin hydrocarbonsUp to 100 The used slop-vox can be either purified by the complex itself or obtained from the raw material purified by this complex. Fusion of petrolatum with slopvox is carried out at 70 ° C with a ratio of components, wt .: Slop-vox 60-80 Petrolatum. The complex is produced by mixing three components: aluminum chloride, dialkyl dithiophosphate of zinc and paraffin hydrocarbon (gasoline Halosha, hexane, heptane, liquid or solid paraffins) at 80 ° C until the aluminum chloride is completely in the liquid phase. The slop-vox filtrate, when de-oiling the cicadas is a side product that is used unqualified. It basically ends in vacuum gas oil and is processed in catalytic cracking units. Slop-voxes contain up to 50 paraffin hydrocarbons, which can be involved in valuable compounds for various purposes. You can get an excellent substitute for petroleum in medical petrolatum from a slop-wax, if it is cleaned in advance with a complex of new aluminum chloride. But the most suitable option is to clean the complex with not the slop-waxes themselves.

and the raw material of the raw material, which, when deoiled, also produces a colorless slop-vox, free from resinous and sulfur compounds.

Replacing sulfuric acid purification in the production of petroleum jelly with an oxychloride complex — aluminum chloride — paraffinic hydrocarbons — zinc dialkyldithiophosphate (DF-P) makes it possible to greatly simplify the technology of medical vazelis production and makes it possible to use a slop wax byproduct of paraffin production and thereby expand the raw materials for medical vaseline. The method is carried out as follows. The original syr, rye-gach, is subjected to purification with an aluminum chloride complex — paraffinic hydrocarbon (gasoline Galosh, hexane, paraffin, etc.) DF-11, which includes the following stages; mixing the complex with the feedstock; sludge waste complex and phase separation. Purified gum is sent to the de-lubrication step with selective solvents. At this stage, the oil-free paraffin and slop-wax are obtained, which, after contact purification with bleaching clay from acidic compounds, are fused with petrolatum at 70 ° C with stirring until a homogeneous mass is obtained. Another option for obtaining purified slop-wok: raw material raw material is sent to the deoiling stage, deoiled paraffin and slop wax are obtained, which is then purified by the specified complex, aftertreatment with bleaching clay and fusing with petrolatum. Petrolatum is also purified by a complex based on aluminum chloride before fusion with slopowax. EXAMPLE 1 A brand T brand gauge was taken as the feedstock: melting point, ° C53.5 Drop point, ° C52.5 Viscosity is kinematic at 100 ° C. CSt 5i7 Oil content, wt. .% 28, kO Sulfur content, wt.% 0.09 Color visually Brown Gach. treated with the complex, taken in an amount of raw material, at. Stirring is carried out for 30 minutes, settling - 60 minutes. Purified gach is obtained, which is subject to deoiling according to the plant technology regulations. The solvent used is a mixed solvent: 70% methyl ethyl ketone, 30% toluene. The volume ratio of solvent to raw material k :. The final cooling temperature at the 1st and 2nd separation steps is 8 ° C. Flour pellet solvent in the ratio of 1: 1 on raw materials. Receive paraffin and slop-vox (sample 1). This same gach is first subjected to deoiling under the described conditions with the formation of paraffin and spleen having the following characteristics: Melting point, C 36 Kinematic viscosity at iOO ° C, cSt6.37 Oil content, wt.%, 5 Sulfur content,% 0.135 The obtained slop-wox is treated with the specified complex and purified slop-vox is obtained (sample 2 Then the slop-vox (samples 1 and 2) is subjected to additional treatment with bleaching clay for 30 min. To remove acidic impurities. Characteristics of the purified slopes of samples 1 and 2 before and after In parallel, the purified petrolatum is obtained in parallel to Table 1. For this purpose, the initial Petrum 0 Latum is treated with 150% of the indicated complex at BO ° C, and then subjected to contact purification with bleaching clay at 80 ° C for 30 minutes to remove acidic impurities. The characteristics of the starting and purified petrolatum are given in Table 2. The resulting slop-vox (sample 1) is fused with petrolatum at a ratio of components: 80% slop-vox and 20% petrolatum, to obtain petrolatum (sample 1). The slop-vox (sample 2) is also fused with petrolatum at a ratio of 75% slop-vox and 25% petrolatum; petrolatum is obtained (sample 2). The analysis of the compositions obtained is carried out according to GOST 3582-52 for medical petrolatum. The characteristics of the obtained samples of vaseline in comparison with the standards are given in table. 3., From the table it follows that the ace of the obtained samples of medical vaseline based on purified from the op-wax (both by direct cleaning and indirectly through cleaning with gachei) meets the required standards. Thus, the method allows to simplify the production technology of medical vaseline; reduce the consumption of mineral oils; competently use the by-product of paraffin production of slop-vox; to eliminate the production of hardly recyclable waste and thereby reduce the pollution of the environment.

Melting point, ° C

kinematic viscosity at, cSt

Content of asla,

May L

Sulfur content, wt. |

Color (visually)

32.5 36.5 36.5

6.98 6.17 6.08 6.9 1.8 41.82

Absence Colorless

Melting point, C 58

Drop point, ° С

Kinematic viscosity at, cSt

Oil content, mas

Sulfur content, May. /

Color (visually)

table 2

58.5

58.5

58.0

58.0

12.85 12.32

12.2

30.7

31.1 0.001

The absence of

Dark yellow Slab GOST 3582-52 Indicators Appearance Homogeneous and short, short yarn. When smearing on a glass plate, it gives a smooth, non-crushing and non-cracking film. When melted, it produces a homogeneous, transparent, odorless, fluorescent liquid. Odor (organoleptically) None. White or yellow.

Temperature dripnafleHMHj C

Viscosity at least

a) kinematic, cSt

b) - correspondingly conditional in degrees, not lower

Acid number in mg KOH per 1 g of petroleum jelly, not higher

Ash content,% not more

Water content and foreign substances None

Fat and tar content

Sulfur content

Test for the presence of alkalis and acids (the limit of acidity and alkalinity)

Test for the presence of organic impurities

"0.5

AZ

20.83

23.60

2.86

2.83

0.02

Missing

Missing

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P

Braves Braves

Claims (2)

.11IT a 6 l and c a 3 Sample I G Sample 2 Compliant Compliant Compliant Compliant Compliant. Compliant None. Slightly Yellow-Slightly Yellowish Tint 925990 Claim 1. The method of producing medical vaseline, including cleaning and melting petrolatum - with an oil component, characterized in that, in order to simplify the method and the expansion of the raw material base, as an oil The use of a lipoprotein to de-oil paraffin fractions and purify petrolatum and slop wax with a complex containing aluminum chloride, paraffin hydrocarbons and zinc dialkyldithiophosphate and then fusing them. you pl 5 10 pr op 12, 2. The method according to claim 1, wherein What is the use of the comix of the following composition, wt.%: Aluminum chloride 60-80 Zinc dialkyldithiophosphate3-5 Paraffin hydrocarbonsUp to 100 Sources of information that are considered in the examination 1.GOST 3582-52. 2. Patent of CPP No. 60213, cl. 23c, 2/01, ublik. 1976 (prototype).