RU2015102594A

RU2015102594A - METHOD FOR PRODUCING MEDIUM DISTILLATES AND BASIC OILS

Info

Publication number: RU2015102594A
Application number: RU2015102594A
Authority: RU
Inventors: Эдуард Филип КИФФЕР; Марчелло Стефано РИГУТТО; Елле Рудолф Анна СИТСМА
Original assignee: Шелл Интернэшнл Рисерч Маатсхаппий Б.В.
Priority date: 2012-06-28
Filing date: 2013-06-28
Publication date: 2016-08-20
Also published as: EP2867342A1; CA2877044A1; WO2014001552A1; US20150184089A1

Abstract

1. Способ получения первой фракции средних дистиллятов, второй фракции средних дистиллятов, дистиллятного базового масла и остаточного базового масла, включающий в себя по меньшей мере стадии:(a) подачи потока продукта Фишера-Тропша;(b) разделения потока продукта Фишера-Тропша стадии (а) с получением по меньшей мере низкокипящей фракции, кипящей ниже температуры в диапазоне 300-450°С, и высококипящей фракции, кипящей выше температуры в диапазоне 300-450°С;(c) направления высококипящей фракции стадии (b) на стадию гидрокрекинга/гидроизомеризации для получения по меньшей мере частично изомеризованного потока продукта;(d) разделения потока продукта стадии (с) с получением первой фракции средних дистиллятов, фракции тяжелых дистиллятов и остаточной фракции, причем остаточная фракция имеет температуру перегонки Т5 мас.% от 400 до 650°С;(e) депарафинизации низкокипящей фракции стадии (b) с получением второй фракции средних дистиллятов;f) депарафинизации фракции тяжелых дистиллятов стадии (d) с получением дистиллятного базового масла; иg) депарафинизации остаточной фракции стадии (d) с получением остаточного базового масла.2. Способ по п. 1, в котором первая фракция средних дистиллятов стадии (d) имеет температуру перегонки Т10 мас.% от 150 до 250°С и температуру перегонки Т90 мас.% от 300 до 400°С.3. Способ по п. 1 или 2, в котором стадию депарафинизации осуществляют с помощью процесса каталитической депарафинизации в присутствии катализатора, содержащего молекулярное сито и металл группы VIII.4. Способ по п. 3, в котором молекулярное сито выбирают из группы, состоящей из молекулярных сит типа MTW, МТТ, TON, ZSM-48 и EU-2.5. Способ по п. 3, в котором металлом группы VIII является платина или палладий.6. Способ по п. 3, в котором катализатор1. A method for producing a first fraction of middle distillates, a second fraction of middle distillates, a distillate base oil and a residual base oil, comprising at least the steps of: (a) supplying a Fischer-Tropsch product stream; (b) separating a Fischer-Tropsch product stream; (a) obtaining at least a low boiling fraction boiling below a temperature in the range of 300-450 ° C and a high boiling fraction boiling above a temperature in the range of 300-450 ° C; (c) directing the high boiling fraction of stage (b) to the hydrocracking step / hydroisomerization for obtaining at least partially isomerized product stream; (d) separating the product stream of step (c) to obtain a first middle distillate fraction, a heavy distillate fraction and a residual fraction, the residual fraction having a distillation temperature T5 wt.% from 400 to 650 ° C; (e) dewaxing the low boiling fraction of step (b) to obtain a second middle distillate fraction; f) dewaxing the heavy distillate fraction of step (d) to obtain a distillate base oil; and g) dewaxing the residual fraction of step (d) to obtain a residual base oil. 2. The method according to claim 1, wherein the first fraction of the middle distillates of step (d) has a distillation temperature T10 wt.% From 150 to 250 ° C. and a distillation temperature T90 wt.% From 300 to 400 ° C. 3. The method according to claim 1 or 2, wherein the dewaxing step is carried out using a catalytic dewaxing process in the presence of a catalyst containing a molecular sieve and a metal of group VIII.4. The method of claim 3, wherein the molecular sieve is selected from the group consisting of molecular sieves such as MTW, MTT, TON, ZSM-48, and EU-2.5. The method of claim 3, wherein the Group VIII metal is platinum or palladium. The method of claim 3, wherein the catalyst

Claims

1. A method of obtaining a first fraction of middle distillates, a second fraction of middle distillates, distillate base oil and residual base oil, comprising at least the steps of:

(a) supplying a Fischer-Tropsch product stream;

(b) separating the Fischer-Tropsch product stream of step (a) to obtain at least a low boiling fraction boiling below a temperature in the range of 300-450 ° C and a high boiling fraction boiling above a temperature in the range of 300-450 ° C;

(c) directing the high boiling fraction of step (b) to the hydrocracking / hydroisomerization step to obtain an at least partially isomerized product stream;

(d) separating the product stream of step (c) to obtain a first middle distillate fraction, a heavy distillate fraction and a residual fraction, the residual fraction having a distillation temperature T5 wt.% from 400 to 650 ° C .;

(e) dewaxing the low boiling fraction of step (b) to obtain a second middle distillate fraction;

f) dewaxing the heavy distillate fraction of step (d) to obtain a distillate base oil; and

g) dewaxing the residual fraction of step (d) to obtain a residual base oil.

2. The method according to p. 1, in which the first fraction of the middle distillates of stage (d) has a distillation temperature T10 wt.% From 150 to 250 ° C. And a distillation temperature T90 wt.% From 300 to 400 ° C.

3. The method according to p. 1 or 2, in which the stage of dewaxing is carried out using a catalytic dewaxing process in the presence of a catalyst containing a molecular sieve and a metal of group VIII.

4. The method according to p. 3, in which the molecular sieve is selected from the group consisting of molecular sieves such as MTW, MTT, TON, ZSM-48 and EU-2.

5. The method according to p. 3, in which the metal of group VIII is platinum or palladium.

6. The method according to p. 3, in which the catalyst contains a binder of silicon dioxide or titanium dioxide.

7. The method according to p. 1 or 2, in which the second fraction of the middle distillates of stage (e) has a distillation temperature T10 wt.% From 150 to 250 ° C. And a distillation temperature T90 wt.% From 300 to 400 ° C.

8. The method according to p. 1 or 2, comprising an additional step (h), in which, before carrying out step (e), the first fraction of middle distillates from step (d) or a part thereof is combined with the low boiling fraction of step (b) to obtain a mixture , and on which this mixture is subjected to dewaxing to obtain a third fraction of middle distillates.

9. The method according to p. 8, including an additional stage (i), in which the first fraction of middle distillates of stage (d) or part thereof is combined with the second fraction of middle distillates of stage (e) to obtain a combined product of middle distillates.

10. The method according to claim 9, comprising the additional step (j) of combining at least a portion of the residual fraction obtained in step (d) with the high boiling fraction obtained in step (b) before step (c).