Nippon Oil Company

King Fahd University of Petroleum and Minerals

Nippon Petroleum Refining Company, Limited

Nippon Co., Ltd.

Japan Cooperation Center, Petroleum (jccp)

Minoru Hatayama

Masaru Ushio

Masaru Sato

Syed Ahmed Ali

Mohammad Ashraf Ali

Takashi Ino

Tomoyuki Inui

Muhammad A Al-Saleh

Toshiyuki Enomoto

Katuhiko Ishikawa

Katsuhiko Ishikawa

Yasuo Nakatsuka

Tsutomo Okamoto

Masayuki Inui, Legal Representative

Khalid Al-Nawad

Tamio Nakano

The multiple zeolite catalyst is a catalytic composition used to convert Calkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540&#xb0; C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.

Multiple zeolite catalyst

There is provided a catalyst that is highly resistant to sulfur and nitrogen compounds and active for hydrogenation and shows a low hydrocracking rate and a long service life as well as a method of converting aromatic hydrocarbons in hydrocarbon oil containing sulfur and nitrogen compounds into saturated hydrocarbons by using such a catalyst. A method of hydrogenating aromatic hydrocarbons in hydrocarbon oil containing 80 wt % or more of a fraction having a boiling point of 170 to 390&deg; C. and said aromatic hydrocarbons is characterized in that the hydrocarbon oil is brought into contact with hydrogen in the presence of a catalyst containing clay minerals having principal ingredients of Si and Mg as carrier and at least one of the VIII-group metals of periodic table as active metal.

Method of hydrogenating aromatic hydrocarbons in hydrocarbon oil

A process for producing a fuel oil base material having a lower sulfur content than that of stock oil and a dry sludge content of 0.05 mass % or less, which involves hydrotreating the stock oil having a dry sludge content of 0 to 5.0 mass % and a sulfur content of 1.0 to 10 mass % in two stages is provided, wherein the temperature of first-stage hydrotreatment is 340.degree. to 450.degree. C. and the temperature of second-stage hydrotreatment is 200.degree. to 440.degree. C. and maintained at a temperature lower than the temperature of the first-stage hydrotreatment.

Process for producing a fuel oil base material

A process for the production of a low-sulfur diesel gas oil having a sulfur content of 0.05% by weight or lower and having a Saybolt color number of -10 or higher, from a petroleum distillate having a sulfur content of 0.1 to 2.0% by weight and having an inferior color and inferior oxidation stability comprises contacting the petroleum distillate with hydrogen in the presence of a hydro-treating catalyst which has at least one metal supported on said porous carrier, at a temperature of 350.degree. to 450.degree. C., and a pressure of 45 to 100 kg/cm.sup.2 in the first step to thereby produce materials having a sulfur content of 0.05% by weight or lower, and contacting further the materials issued from the first step with hydrogen in the presence of a hydro-treating catalyst which has at least one metal supported on said porous carrier, at a temperature of 200.degree. to 300.degree. C., and a pressure of 45 to 100 kg/cm.sup.2 in the second step to thereby produce the finished low-sulfur diesel gas oil.

Process for the production of low-sulfur diesel gas oil

Growing community of inventors

Yokohama, Japan

Minoru Hatayama