Research Association for Residual Oil Processing

Maruzen Oil Co. Ltd.

Other

Kinya Tawara

Kazushi Usui

Shigenori Nakashizu

Tomohiro Yoshinari

Tadashi Matsumoto

Hiroki Kamiyama

Tadahiro Wakui

Kenichi Sekine

Kazuyoshi Kudoh

Kohji Matsumoto

Takashi Kaneko

Mikio Sato

Mitsugu Yumoto

Shinpachiro Iwaki

Takeshi Tomino

In a sulfur determining process, comprising a hydrocracking step of a sample in a ceramic reactor and darkness measuring step of lead acetate soaked tape by reaction of produced H.sub.2 S, an improvement is made. The improvement comprises at least one of procedure selected from the group consisting of introduction of CO.sub.2 in the ceramic reactor, using an inverted AC current from stabilized DC current as an electric supply for the darkness measuring step, covering a box containing the darkness measuring sensor and a sensor circuit with a heat insulating material, A/D converting a differential output and making moving averages for making a noiseless record, and charging the differential output to a condenser through an electric resistance for making a noiseless record. Sulfur content is measured from a record of improved output. According to the improvements, an economic conventional ceramic reactor becomes available, and limit of sulfur determination of 25 ppb is improved to 2 ppb in the best case.

Process for determination of sulfur content

A catalyst composition for the hydrogenation of heavy hydrocarbon oil, where the catalyst composition comprises at least one active ingredient for hydrogenation supported on a porous alumina carrier and has the following characteristics: (1) the total volume of the pores therein is from 0.4 to 1.0 ml/g; (2) the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 140 .ANG.; (3) the volume of pores having a pore size within .+-.25% of the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 98% of the volume of pores having a pore diameter of from 5 to 400 .ANG.; (4) the volume of pores having a pore diameter of from 400 to 5000 .ANG. is from 2 to 9% of the total volume of the entire pores; (5) the ratio (mm.sup.2 /mm.sup.3) of the outer surface area of a molded catalyst powder to the volume thereof is from 4 to 8; and (6) all points in the interior of the molded catalyst particle are positioned within 0.05 to 0.6 mm from the outer surface thereof. A process for producing the catalyst composition is also disclosed. Further, a process for hydrogenating heavy hydrocarbon oil, which comprises contacting the heavy hydrocarbon oil with the catalyst composition in the presence of hydrogen is disclosed.

Catalyst composition for hydrogenation of heavy hydrocarbon oil and

A hydrogen treating catalyst comprising alumina, 3 to 7% by weight of nickel calculating as NiO and 10 to 20% by weight of molybdenum calculating as MoO.sub.3, which has a total pore volume of 0.55 to 1.0 ml/g, an average pore diameter of 50 to 250 .ANG., and factor P of 3 to 4, wherein the volume of pores having a diameter of larger than the average pore diameter+10 .ANG. and smaller than the average pore diameter+500 .ANG. is 10 to 30% of the total pore volume in catalyst pore distribution, wherein the factor P is represented by the following formula:

Hydrogen treating catalyst for hydrodesulfurization-cracking of mineral

A hydrocarbon conversion crystalline catalyst composition is described comprising 5 to 90% by weight of a crystalline aluminosilicate zeolite, 5 to 90% by weight of a porous inorganic oxide, 1 to 20% by weight of a Group VI metal component (calculated as the corresponding oxide), 0 to 7% by weight of a Group VIII metal component (calculated as the corresponding oxide), and at least one of phosphorus and boron components. The weight ratio of the amount of the phosphorus+boron components (calculated as elemental phosphorus and elemental boron) to the Group VI metal component (calculated as the corresponding oxide) is from 0.01:1 to 0.08:1 and the weight ratio of each of phosphorus and boron to the Group VI metal component is below 0.045:1. This composition is prepared by contacting a support comprising the crystalline aluminosilicate zeolite and inorganic oxide with a solution containing a Group VI metal component and at least one phosphorus or boron component. The weight ratio of elemental phosphorus+elemental boron to the Group VI metal component (calculated as the corresponding oxide) is from 0.01:1 to 0.08:1 and the weight ratio of each of elemental phosphorus and elemental boron to the Group VI metal component (also calculated as the corresponding oxide) is below 0.045:1. The solution has a pH of from 3.3 to 6.0. The Group VI metal component and at least one of the phosphourus and boron components are deposited on the support.

Crystalline catalyst compositions for the conversion of hydrocarbons

A process is described for converting glycol dialkyl ether without substantial formation of olefin oligomers by reaction with water, comprising reacting a feed glycol di-tertiary alkyl ether represented by structural formula (A) with water using a strongly acidic cation-exchange resin as a catalyst and a reaction temperature of from 40.degree. C. to 150.degree. C. under a pressure of from 1 to 70 kg/cm.sup.2 (absolute pressure) in a molar ratio of water/feed glycol di-tertiary alkyl ether represented by the structural formula (A) of from 0.05/1 to 60/1, to convert the ether of formula (A) into at least one of (1) glycol mono-tertiary alkyl ether represented by the structural formula (B) and tertiary alcohol represented by the structural formula (C), or (2) glycol mono-tertiary alkyl ether represented by the structural formula (B) tertiary alcohol represented by the structural formula (C) and tertiary olefin represented by the structural formula (D); wherein (A), (B), (C), and (D) are as follows: ##STR1## wherein R.sub.1 represents a methyl group, an ethyl group, or a propyl group, n represents an integer of from 1 to 10, and R.sub.2 represents an alkylene group having from 2 to 14 carbon atoms, and the total number of carbon atoms in the group --(R.sub.2 --O).sub.n -- is from 2 to 30.

Process for converting glycol dialkyl ether

A process for the separation and purification of vinylphenol which comprises contacting crude vinylphenol containing vinylphenol and impurities such as phenol, alkylphenols, vinylphenol polymers and hydrocarbons countercurrently with an aqueous alkali solution together with a specific organic solvent. Vinylphenol obtained is useful as the raw material for the production of polyvinylphenol or a vinylphenol copolymer which is utilized as a thermoplastic resin, an ion exchange membrane, an adhesive, a glass fiber-reinforced composite or the like.

Process for separation and purification of vinylphenol

Growing community of inventors

Saitama, Japan

Kinya Tawara